Added Speex for narrowband, wideband, and ultra-wideband!!

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@278 74dad513-b988-da41-8d7b-12977e46ad98

113 files changed, 26524 insertions, 73 deletions

diff --git a/pjmedia/README.txt b/pjmedia/README.txt
new file mode 100644
index 00000000..d9644e22
--- /dev/null
+++ b/pjmedia/README.txt
@@ -0,0 +1,19 @@
+[Last Update: 2006/03/04]
+
+This directory contains two static libraries:
+ - pjmedia
+   The multimedia framework.
+
+ - pjmedia-codec
+   Codec collections.
+
+pjmedia has G711 codecs (Alaw and ULaw).
+
+pjmedia-codec has:
+ - GSM-FR implementation
+   Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
+   Universitaet Berlin
+
+ - Speex 1.1.12
+   http://www.speex.org
+
diff --git a/pjmedia/build/pjmedia.dsp b/pjmedia/build/pjmedia.dsp
index f7bf4024..f754702a 100644
--- a/pjmedia/build/pjmedia.dsp
+++ b/pjmedia/build/pjmedia.dsp
@@ -205,6 +205,10 @@ SOURCE=..\include\pjmedia\file_port.h
 # End Source File

 # Begin Source File

 

+SOURCE=..\include\pjmedia\g711.h

+# End Source File

+# Begin Source File

+

 SOURCE=..\include\pjmedia\jbuf.h

 # End Source File

 # Begin Source File

diff --git a/pjmedia/build/pjmedia_codec.dsp b/pjmedia/build/pjmedia_codec.dsp
index 8f67c4f6..0b650510 100644
--- a/pjmedia/build/pjmedia_codec.dsp
+++ b/pjmedia/build/pjmedia_codec.dsp
@@ -41,7 +41,8 @@ RSC=rc.exe
 # PROP Intermediate_Dir ".\output\pjmedia-codec-i386-win32-vc6-release"
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
-# ADD CPP /nologo /MD /W4 /GX /O2 /I "../include" /I "../../pjlib/include" /D "NDEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D PJ_WIN32=1 /D PJ_M_I386=1 /YX /FD /c
+# ADD CPP /nologo /MD /W4 /GX- /O2 /I "../include" /I "../../pjlib/include" /I "../src/pjmedia-codec" /D "NDEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D PJ_WIN32=1 /D PJ_M_I386=1 /D "HAVE_CONFIG_H" /FD /c
+# SUBTRACT CPP /YX
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
 # ADD RSC /l 0x409 /d "NDEBUG"
 BSC32=bscmake.exe
@@ -64,7 +65,8 @@ LIB32=link.exe -lib
 # PROP Intermediate_Dir ".\output\pjmedia-codec-i386-win32-vc6-debug"
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
-# ADD CPP /nologo /MTd /W4 /Gm /GX /ZI /Od /I "../include" /I "../../pjlib/include" /D "_DEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D PJ_WIN32=1 /D PJ_M_I386=1 /FR /YX /FD /GZ /c
+# ADD CPP /nologo /MTd /W4 /Gm /GX- /ZI /Od /I "../include" /I "../../pjlib/include" /I "../src/pjmedia-codec" /D "_DEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D PJ_WIN32=1 /D PJ_M_I386=1 /D "HAVE_CONFIG_H" /FR /FD /GZ /c
+# SUBTRACT CPP /YX
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
 # ADD RSC /l 0x409 /d "_DEBUG"
 BSC32=bscmake.exe
@@ -91,6 +93,10 @@ SOURCE="..\src\pjmedia-codec\gsm.c"
 
 SOURCE="..\src\pjmedia-codec\pjmedia-codec-lib.c"
 # End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex_codec.c"
+# End Source File
 # End Group
 # Begin Group "Header Files"
 
@@ -109,6 +115,10 @@ SOURCE="..\include\pjmedia-codec.h"
 # End Source File
 # Begin Source File
 
+SOURCE="..\include\pjmedia-codec\speex.h"
+# End Source File
+# Begin Source File
+
 SOURCE="..\include\pjmedia-codec\types.h"
 # End Source File
 # End Group
@@ -204,5 +214,329 @@ SOURCE="..\src\pjmedia-codec\gsm\toast.h"
 SOURCE="..\src\pjmedia-codec\gsm\unproto.h"
 # End Source File
 # End Group
+# Begin Group "Speex Codec"
+
+# PROP Default_Filter ""
+# Begin Group "Speex Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\arch.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\cb_search.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\cb_search_arm4.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\cb_search_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\cb_search_sse.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\config.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\filters.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\filters_arm4.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\filters_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\filters_sse.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\fixed_arm4.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\fixed_arm5e.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\fixed_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\fixed_debug.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\fixed_generic.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lpc.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lpc_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lsp.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\ltp.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\ltp_arm4.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\ltp_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\ltp_sse.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\math_approx.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\misc.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\misc_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\modes.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\nb_celp.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\pseudofloat.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\quant_lsp.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\sb_celp.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\smallft.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_bits.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_callbacks.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_echo.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_header.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_jitter.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_preprocess.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_stereo.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_types.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\stack_alloc.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vbr.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vq.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vq_arm4.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vq_bfin.h"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vq_sse.h"
+# End Source File
+# End Group
+# Begin Group "Speex Source Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\bits.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\cb_search.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_10_16_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_10_32_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_20_32_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_5_256_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_5_64_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\exc_8_128_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\filters.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\gain_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\gain_table_lbr.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\hexc_10_32_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\hexc_table.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\high_lsp_tables.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lpc_spx.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lsp.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\lsp_tables_nb.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\ltp.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\math_approx.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\misc.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\modes.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\nb_celp.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\preprocess_spx.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\quant_lsp.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\sb_celp.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\smallft.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_callbacks.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\speex_header.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\stereo.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vbr.c"
+# End Source File
+# Begin Source File
+
+SOURCE="..\src\pjmedia-codec\speex\vq.c"
+# End Source File
+# End Group
+# End Group
 # End Target
 # End Project
diff --git a/pjmedia/include/pjmedia-codec.h b/pjmedia/include/pjmedia-codec.h
index f39048c7..c37fc5ca 100644
--- a/pjmedia/include/pjmedia-codec.h
+++ b/pjmedia/include/pjmedia-codec.h
@@ -19,14 +19,18 @@
 #ifndef __PJMEDIA_CODEC1_H__
 #define __PJMEDIA_CODEC1_H__
 
-#include <pjmedia-codec/types.h>
+#include <pjmedia-codec/gsm.h>
+#include <pjmedia-codec/speex.h>
+
 
 PJ_BEGIN_DECL
 
 
 /**
  * Initialize pjmedia-codec library, and register all codec factories
- * in this library.
+ * in this library. If application wants to controll the order of
+ * the codec, it MUST NOT call this function, but instead register
+ * each codec individually.
  *
  * @param endpt	    The pjmedia endpoint.
  *
diff --git a/pjmedia/include/pjmedia-codec/config.h b/pjmedia/include/pjmedia-codec/config.h
index 4c2bce2d..9b93c5a1 100644
--- a/pjmedia/include/pjmedia-codec/config.h
+++ b/pjmedia/include/pjmedia-codec/config.h
@@ -30,5 +30,13 @@
 #endif
 
 
+/*
+ * Include Speex codec?
+ */
+#ifndef PJMEDIA_CODEC_HAS_SPEEX
+#   define PJMEDIA_CODEC_HAS_SPEEX    1
+#endif
+
+
 
 #endif	/* __PJMEDIA_CODEC_CONFIG_H__ */
diff --git a/pjmedia/include/pjmedia-codec/speex.h b/pjmedia/include/pjmedia-codec/speex.h
new file mode 100644
index 00000000..a6e76808
--- /dev/null
+++ b/pjmedia/include/pjmedia-codec/speex.h
@@ -0,0 +1,87 @@
+/* $Id$ */
+/* 
+ * Copyright (C)2003-2006 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJMEDIA_CODEC_SPEEX_H__
+#define __PJMEDIA_CODEC_SPEEX_H__
+
+#include <pjmedia-codec/types.h>
+
+
+PJ_BEGIN_DECL
+
+
+/**
+ * Bitmask options to be passed during Speex codec factory initialization.
+ */
+enum pjmedia_speex_options
+{
+    PJMEDIA_SPEEX_NO_NB	    = 1,    /**< Disable narrowband mode.	*/
+    PJMEDIA_SPEEX_NO_WB	    = 2,    /**< Disable wideband mode.		*/
+    PJMEDIA_SPEEX_NO_UWB    = 4,    /**< Disable ultra-wideband mode.	*/
+};
+
+
+/**
+ * Initialize and register Speex codec factory to pjmedia endpoint.
+ *
+ * @param endpt		The pjmedia endpoint.
+ * @param options	Bitmask of pjmedia_speex_options (default=0).
+ * @param quality	Specify encoding quality, or use -1 for default 
+ *			(default=8).
+ * @param complexity	Specify encoding complexity , or use -1 for default 
+ *			(default=8).
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_speex_init( pjmedia_endpt *endpt,
+					       unsigned options,
+					       int quality,
+					       int complexity );
+
+
+/**
+ * Initialize Speex codec factory using default settings and register to 
+ * pjmedia endpoint.
+ *
+ * @param endpt		The pjmedia endpoint.
+ * @param options	Bitmask of pjmedia_speex_options (default=0).
+ * @param quality	Specify encoding quality, or use -1 for default 
+ *			(default=8).
+ * @param complexity	Specify encoding complexity , or use -1 for default 
+ *			(default=8).
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_speex_init_default(pjmedia_endpt *endpt);
+
+
+
+/**
+ * Unregister Speex codec factory from pjmedia endpoint and deinitialize
+ * the Speex codec library.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_speex_deinit(void);
+
+
+PJ_END_DECL
+
+
+#endif	/* __PJMEDIA_CODEC_SPEEX_H__ */
+
diff --git a/pjmedia/include/pjmedia.h b/pjmedia/include/pjmedia.h
index b59ca2ab..29e9503e 100644
--- a/pjmedia/include/pjmedia.h
+++ b/pjmedia/include/pjmedia.h
@@ -30,6 +30,7 @@
 #include <pjmedia/endpoint.h>
 #include <pjmedia/errno.h>
 #include <pjmedia/file_port.h>
+#include <pjmedia/g711.h>
 #include <pjmedia/jbuf.h>
 #include <pjmedia/port.h>
 #include <pjmedia/rtcp.h>
diff --git a/pjmedia/include/pjmedia/g711.h b/pjmedia/include/pjmedia/g711.h
new file mode 100644
index 00000000..f3a3d0c7
--- /dev/null
+++ b/pjmedia/include/pjmedia/g711.h
@@ -0,0 +1,52 @@
+/* $Id$ */
+/* 
+ * Copyright (C)2003-2006 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJMEDIA_G711_H__
+#define __PJMEDIA_G711_H__
+
+#include <pjmedia-codec/types.h>
+
+
+PJ_BEGIN_DECL
+
+
+/**
+ * Initialize and register G711 codec factory to pjmedia endpoint.
+ * This will register PCMU and PCMA codec, in that order.
+ *
+ * @param endpt		The pjmedia endpoint.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_g711_init(pjmedia_endpt *endpt);
+
+
+
+/**
+ * Unregister G711 codec factory from pjmedia endpoint.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_g711_deinit(void);
+
+
+PJ_END_DECL
+
+
+#endif	/* __PJMEDIA_G711_H__ */
+
diff --git a/pjmedia/src/pjmedia-codec/pjmedia-codec-lib.c b/pjmedia/src/pjmedia-codec/pjmedia-codec-lib.c
index 25a3028d..8a201031 100644
--- a/pjmedia/src/pjmedia-codec/pjmedia-codec-lib.c
+++ b/pjmedia/src/pjmedia-codec/pjmedia-codec-lib.c
@@ -21,6 +21,7 @@
 /* Include factories: */
 #include <pjmedia-codec/config.h>
 #include <pjmedia-codec/gsm.h>
+#include <pjmedia-codec/speex.h>
 
 
 static pjmedia_endpt *the_endpt;
@@ -35,6 +36,10 @@ static struct codec_list
     { &pjmedia_codec_gsm_init, &pjmedia_codec_gsm_deinit},
 #endif
 
+#if PJMEDIA_CODEC_HAS_SPEEX
+    { &pjmedia_codec_speex_init_default, &pjmedia_codec_speex_deinit},
+#endif
+
     { NULL, NULL }
 };
 
diff --git a/pjmedia/src/pjmedia-codec/speex/arch.h b/pjmedia/src/pjmedia-codec/speex/arch.h
new file mode 100644
index 00000000..52066196
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/arch.h
@@ -0,0 +1,192 @@
+/* Copyright (C) 2003 Jean-Marc Valin */
+/**
+   @file arch.h
+   @brief Various architecture definitions Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef ARCH_H
+#define ARCH_H
+
+#include "speex/speex_types.h"
+
+#define ABS(x) ((x) < 0 ? (-(x)) : (x))      /**< Absolute integer value. */
+#define ABS16(x) ((x) < 0 ? (-(x)) : (x))    /**< Absolute 16-bit value.  */
+#define MAX16(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum 16-bit value.   */
+#define ABS32(x) ((x) < 0 ? (-(x)) : (x))    /**< Absolute 32-bit value.  */
+
+#ifdef FIXED_POINT
+
+typedef spx_int16_t spx_word16_t;
+typedef spx_int32_t   spx_word32_t;
+#ifdef _MSC_VER
+typedef __int64      spx_word64_t;
+#elif defined NO_LONGLONG
+typedef double    spx_word64_t;
+#else
+typedef long long    spx_word64_t;
+#endif
+typedef spx_word32_t spx_mem_t;
+typedef spx_word16_t spx_coef_t;
+typedef spx_word16_t spx_lsp_t;
+typedef spx_word32_t spx_sig_t;
+
+#define Q15ONE 32767
+
+#define LPC_SCALING  8192
+#define SIG_SCALING  16384
+#define LSP_SCALING  8192.
+#define GAMMA_SCALING 32768.
+#define GAIN_SCALING 64
+#define GAIN_SCALING_1 0.015625
+
+#define LPC_SHIFT    13
+#define LSP_SHIFT    13
+#define SIG_SHIFT    14
+
+#define VERY_SMALL 0
+#define VERY_LARGE32 ((spx_word32_t)2147483647)
+#define VERY_LARGE16 ((spx_word16_t)32767)
+
+
+#ifdef FIXED_DEBUG
+#include "fixed_debug.h"
+#else
+
+#include "fixed_generic.h"
+
+#ifdef ARM5E_ASM
+#include "fixed_arm5e.h"
+#elif defined (ARM4_ASM)
+#include "fixed_arm4.h"
+#elif defined (ARM5E_ASM)
+#include "fixed_arm5e.h"
+#elif defined (BFIN_ASM)
+#include "fixed_bfin.h"
+#endif
+
+#endif
+
+
+#else
+
+typedef float spx_mem_t;
+typedef float spx_coef_t;
+typedef float spx_lsp_t;
+typedef float spx_sig_t;
+typedef float spx_word16_t;
+typedef float spx_word32_t;
+typedef float spx_word64_t;
+
+#define Q15ONE 1.0f
+#define LPC_SCALING  1.f
+#define SIG_SCALING  1.f
+#define LSP_SCALING  1.f
+#define GAMMA_SCALING 1.f
+#define GAIN_SCALING 1.f
+#define GAIN_SCALING_1 1.f
+
+#define LPC_SHIFT    0
+#define LSP_SHIFT    0
+#define SIG_SHIFT    0
+
+#define VERY_SMALL 1e-15f
+#define VERY_LARGE32 1e15f
+#define VERY_LARGE16 1e15f
+
+#define QCONST16(x,bits) (x)
+#define QCONST32(x,bits) (x)
+
+#define NEG16(x) (-(x))
+#define NEG32(x) (-(x))
+#define EXTRACT16(x) (x)
+#define EXTEND32(x) (x)
+#define SHR16(a,shift) (a)
+#define SHL16(a,shift) (a)
+#define SHR32(a,shift) (a)
+#define SHL32(a,shift) (a)
+#define PSHR16(a,shift) (a)
+#define PSHR32(a,shift) (a)
+#define SATURATE16(x,a) (x)
+#define SATURATE32(x,a) (x)
+
+#define PSHR(a,shift)       (a)
+#define SHR(a,shift)       (a)
+#define SHL(a,shift)       (a)
+#define SATURATE(x,a) (x)
+
+#define ADD16(a,b) ((a)+(b))
+#define SUB16(a,b) ((a)-(b))
+#define ADD32(a,b) ((a)+(b))
+#define SUB32(a,b) ((a)-(b))
+#define ADD64(a,b) ((a)+(b))
+#define MULT16_16_16(a,b)     ((a)*(b))
+#define MULT16_16(a,b)     ((spx_word32_t)(a)*(spx_word32_t)(b))
+#define MAC16_16(c,a,b)     ((c)+(spx_word32_t)(a)*(spx_word32_t)(b))
+
+#define MULT16_32_Q11(a,b)     ((a)*(b))
+#define MULT16_32_Q13(a,b)     ((a)*(b))
+#define MULT16_32_Q14(a,b)     ((a)*(b))
+#define MULT16_32_Q15(a,b)     ((a)*(b))
+
+#define MAC16_32_Q11(c,a,b)     ((c)+(a)*(b))
+#define MAC16_32_Q15(c,a,b)     ((c)+(a)*(b))
+
+#define MAC16_16_Q11(c,a,b)     ((c)+(a)*(b))
+#define MAC16_16_Q13(c,a,b)     ((c)+(a)*(b))
+#define MULT16_16_Q11_32(a,b)     ((a)*(b))
+#define MULT16_16_Q13(a,b)     ((a)*(b))
+#define MULT16_16_Q14(a,b)     ((a)*(b))
+#define MULT16_16_Q15(a,b)     ((a)*(b))
+#define MULT16_16_P15(a,b)     ((a)*(b))
+
+#define DIV32_16(a,b)     ((a)/(b))
+#define DIV32(a,b)     ((a)/(b))
+
+
+#endif
+
+
+#ifdef CONFIG_TI_C55X
+
+/* 2 on TI C5x DSP */
+#define BYTES_PER_CHAR 2 
+#define BITS_PER_CHAR 16
+#define LOG2_BITS_PER_CHAR 4
+
+#else 
+
+#define BYTES_PER_CHAR 1
+#define BITS_PER_CHAR 8
+#define LOG2_BITS_PER_CHAR 3
+
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/bits.c b/pjmedia/src/pjmedia-codec/speex/bits.c
new file mode 100644
index 00000000..fae7a9e0
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/bits.c
@@ -0,0 +1,359 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: speex_bits.c
+
+   Handles bit packing/unpacking
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex_bits.h>
+#include "misc.h"
+
+/* Maximum size of the bit-stream (for fixed-size allocation) */
+#ifndef MAX_CHARS_PER_FRAME
+#define MAX_CHARS_PER_FRAME (2000/BYTES_PER_CHAR)
+#endif
+
+void speex_bits_init(SpeexBits *bits)
+{
+   bits->chars = (char*)speex_alloc(MAX_CHARS_PER_FRAME);
+   if (!bits->chars)
+      return;
+
+   bits->buf_size = MAX_CHARS_PER_FRAME;
+
+   bits->owner=1;
+
+   speex_bits_reset(bits);
+}
+
+void speex_bits_init_buffer(SpeexBits *bits, void *buff, int buf_size)
+{
+   bits->chars = (char*)buff;
+   bits->buf_size = buf_size;
+
+   bits->owner=0;
+
+   speex_bits_reset(bits);
+}
+
+void speex_bits_destroy(SpeexBits *bits)
+{
+   if (bits->owner)
+      speex_free(bits->chars);
+   /* Will do something once the allocation is dynamic */
+}
+
+void speex_bits_reset(SpeexBits *bits)
+{
+   bits->chars[0]=0;
+   bits->nbBits=0;
+   bits->charPtr=0;
+   bits->bitPtr=0;
+   bits->overflow=0;
+}
+
+void speex_bits_rewind(SpeexBits *bits)
+{
+   bits->charPtr=0;
+   bits->bitPtr=0;
+   bits->overflow=0;
+}
+
+void speex_bits_read_from(SpeexBits *bits, char *chars, int len)
+{
+   int i;
+   if (len > bits->buf_size)
+   {
+      speex_warning_int("Packet is larger than allocated buffer: ", len);
+      if (bits->owner)
+      {
+         char *tmp = (char*)speex_realloc(bits->chars, len);
+         if (tmp)
+         {
+            bits->buf_size=len;
+            bits->chars=tmp;
+         } else {
+            len=bits->buf_size;
+            speex_warning("Could not resize input buffer: truncating input");
+         }
+      } else {
+         speex_warning("Do not own input buffer: truncating input");
+         len=bits->buf_size;
+      }
+   }
+   for (i=0;i<len;i++)
+      bits->chars[i]=chars[i];
+   bits->nbBits=len<<3;
+   bits->charPtr=0;
+   bits->bitPtr=0;
+   bits->overflow=0;
+}
+
+static void speex_bits_flush(SpeexBits *bits)
+{
+   int i;
+   int nchars = ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
+   if (bits->charPtr>0)
+   {
+     for (i=bits->charPtr;i<nchars; i++) 
+       bits->chars[i-bits->charPtr]=bits->chars[i];
+   }
+   bits->nbBits -= bits->charPtr<<LOG2_BITS_PER_CHAR;
+   bits->charPtr=0;
+}
+
+void speex_bits_read_whole_bytes(SpeexBits *bits, char *chars, int nbytes)
+{
+   int i,pos;
+   int nchars = nbytes/BYTES_PER_CHAR;
+
+   if (((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR)+nchars > bits->buf_size)
+   {
+      /* Packet is larger than allocated buffer */
+      if (bits->owner)
+      {
+         char *tmp = (char*)speex_realloc(bits->chars, (bits->nbBits>>LOG2_BITS_PER_CHAR)+nchars+1);
+         if (tmp)
+         {
+            bits->buf_size=(bits->nbBits>>LOG2_BITS_PER_CHAR)+nchars+1;
+            bits->chars=tmp;
+         } else {
+            nchars=bits->buf_size-(bits->nbBits>>LOG2_BITS_PER_CHAR)-1;
+            speex_warning("Could not resize input buffer: truncating input");
+         }
+      } else {
+         speex_warning("Do not own input buffer: truncating input");
+         nchars=bits->buf_size;
+      }
+   }
+
+   speex_bits_flush(bits);
+   pos=bits->nbBits>>LOG2_BITS_PER_CHAR;
+   for (i=0;i<nchars;i++)
+      bits->chars[pos+i]=chars[i];
+   bits->nbBits+=nchars<<LOG2_BITS_PER_CHAR;
+}
+
+int speex_bits_write(SpeexBits *bits, char *chars, int max_nbytes)
+{
+   int i;
+   int max_nchars = max_nbytes/BYTES_PER_CHAR;
+   int charPtr, bitPtr, nbBits;
+
+   /* Insert terminator, but save the data so we can put it back after */
+   bitPtr=bits->bitPtr;
+   charPtr=bits->charPtr;
+   nbBits=bits->nbBits;
+   speex_bits_insert_terminator(bits);
+   bits->bitPtr=bitPtr;
+   bits->charPtr=charPtr;
+   bits->nbBits=nbBits;
+
+   if (max_nchars > ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR))
+      max_nchars = ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
+#if BYTES_PER_CHAR==1
+#define HTOLS(A) (A)
+#else
+#define HTOLS(A) ((((A) >> 8)&0xff)|(((A) & 0xff)<<8))
+#endif
+   for (i=0;i<max_nchars;i++)
+      chars[i]=HTOLS(bits->chars[i]);
+   return max_nchars*BYTES_PER_CHAR;
+}
+
+int speex_bits_write_whole_bytes(SpeexBits *bits, char *chars, int max_nbytes)
+{
+   int max_nchars = max_nbytes/BYTES_PER_CHAR;
+   int i;
+   if (max_nchars > ((bits->nbBits)>>LOG2_BITS_PER_CHAR))
+      max_nchars = ((bits->nbBits)>>LOG2_BITS_PER_CHAR);
+   for (i=0;i<max_nchars;i++)
+      chars[i]=bits->chars[i];
+   
+   if (bits->bitPtr>0)
+      bits->chars[0]=bits->chars[max_nchars];
+   else
+      bits->chars[0]=0;
+   for (i=1;i<((bits->nbBits)>>LOG2_BITS_PER_CHAR)+1;i++)
+      bits->chars[i]=0;
+   bits->charPtr=0;
+   bits->nbBits &= (BITS_PER_CHAR-1);
+   return max_nchars*BYTES_PER_CHAR;
+}
+
+void speex_bits_pack(SpeexBits *bits, int data, int nbBits)
+{
+   unsigned int d=data;
+
+   if (bits->charPtr+((nbBits+bits->bitPtr)>>LOG2_BITS_PER_CHAR) >= bits->buf_size)
+   {
+      speex_warning("Buffer too small to pack bits");
+      if (bits->owner)
+      {
+	int new_nchars = ((bits->buf_size+5)*3)>>1;
+         char *tmp = (char*)speex_realloc(bits->chars, new_nchars);
+         if (tmp)
+         {
+	    speex_memset_bytes(tmp, 0, new_nchars);
+            bits->buf_size=new_nchars;
+            bits->chars=tmp;
+         } else {
+            speex_warning("Could not resize input buffer: not packing");
+            return;
+         }
+      } else {
+         speex_warning("Do not own input buffer: not packing");
+         return;
+      }
+   }
+
+   while(nbBits)
+   {
+      int bit;
+      bit = (d>>(nbBits-1))&1;
+      bits->chars[bits->charPtr] |= bit<<(BITS_PER_CHAR-1-bits->bitPtr);
+      bits->bitPtr++;
+
+      if (bits->bitPtr==BITS_PER_CHAR)
+      {
+         bits->bitPtr=0;
+         bits->charPtr++;
+         bits->chars[bits->charPtr] = 0;
+      }
+      bits->nbBits++;
+      nbBits--;
+   }
+}
+
+int speex_bits_unpack_signed(SpeexBits *bits, int nbBits)
+{
+   unsigned int d=speex_bits_unpack_unsigned(bits,nbBits);
+   /* If number is negative */
+   if (d>>(nbBits-1))
+   {
+      d |= (-1)<<nbBits;
+   }
+   return d;
+}
+
+unsigned int speex_bits_unpack_unsigned(SpeexBits *bits, int nbBits)
+{
+   unsigned int d=0;
+   if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+nbBits>bits->nbBits)
+      bits->overflow=1;
+   if (bits->overflow)
+      return 0;
+   while(nbBits)
+   {
+      d<<=1;
+      d |= (bits->chars[bits->charPtr]>>(BITS_PER_CHAR-1 - bits->bitPtr))&1;
+      bits->bitPtr++;
+      if (bits->bitPtr==BITS_PER_CHAR)
+      {
+         bits->bitPtr=0;
+         bits->charPtr++;
+      }
+      nbBits--;
+   }
+   return d;
+}
+
+unsigned int speex_bits_peek_unsigned(SpeexBits *bits, int nbBits)
+{
+   unsigned int d=0;
+   int bitPtr, charPtr;
+   char *chars;
+
+   if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+nbBits>bits->nbBits)
+     bits->overflow=1;
+   if (bits->overflow)
+      return 0;
+
+   bitPtr=bits->bitPtr;
+   charPtr=bits->charPtr;
+   chars = bits->chars;
+   while(nbBits)
+   {
+      d<<=1;
+      d |= (chars[charPtr]>>(BITS_PER_CHAR-1 - bitPtr))&1;
+      bitPtr++;
+      if (bitPtr==BITS_PER_CHAR)
+      {
+         bitPtr=0;
+         charPtr++;
+      }
+      nbBits--;
+   }
+   return d;
+}
+
+int speex_bits_peek(SpeexBits *bits)
+{
+   if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+1>bits->nbBits)
+      bits->overflow=1;
+   if (bits->overflow)
+      return 0;
+   return (bits->chars[bits->charPtr]>>(BITS_PER_CHAR-1 - bits->bitPtr))&1;
+}
+
+void speex_bits_advance(SpeexBits *bits, int n)
+{
+    if (((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+n>bits->nbBits) || bits->overflow){
+      bits->overflow=1;
+      return;
+    }
+   bits->charPtr += (bits->bitPtr+n) >> LOG2_BITS_PER_CHAR; /* divide by BITS_PER_CHAR */
+   bits->bitPtr = (bits->bitPtr+n) & (BITS_PER_CHAR-1);       /* modulo by BITS_PER_CHAR */
+}
+
+int speex_bits_remaining(SpeexBits *bits)
+{
+   if (bits->overflow)
+      return -1;
+   else
+      return bits->nbBits-((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr);
+}
+
+int speex_bits_nbytes(SpeexBits *bits)
+{
+   return ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
+}
+
+void speex_bits_insert_terminator(SpeexBits *bits)
+{
+   if (bits->bitPtr)
+      speex_bits_pack(bits, 0, 1);
+   while (bits->bitPtr)
+      speex_bits_pack(bits, 1, 1);
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/cb_search.c b/pjmedia/src/pjmedia-codec/speex/cb_search.c
new file mode 100644
index 00000000..234dc2ee
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/cb_search.c
@@ -0,0 +1,617 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: cb_search.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cb_search.h"
+#include "filters.h"
+#include "stack_alloc.h"
+#include "vq.h"
+#include "misc.h"
+
+#ifdef _USE_SSE
+#include "cb_search_sse.h"
+#elif defined(ARM4_ASM) || defined(ARM5E_ASM)
+#include "cb_search_arm4.h"
+#elif defined(BFIN_ASM)
+#include "cb_search_bfin.h"
+#endif
+
+#ifndef OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
+static void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
+{
+   int i, j, k;
+   VARDECL(spx_word16_t *shape);
+   ALLOC(shape, subvect_size, spx_word16_t);
+   for (i=0;i<shape_cb_size;i++)
+   {
+      spx_word16_t *res;
+      
+      res = resp+i*subvect_size;
+      for (k=0;k<subvect_size;k++)
+         shape[k] = (spx_word16_t)shape_cb[i*subvect_size+k];
+      E[i]=0;
+
+      /* Compute codeword response using convolution with impulse response */
+      for(j=0;j<subvect_size;j++)
+      {
+         spx_word32_t resj=0;
+         spx_word16_t res16;
+         for (k=0;k<=j;k++)
+            resj = MAC16_16(resj,shape[k],r[j-k]);
+#ifdef FIXED_POINT
+         res16 = EXTRACT16(SHR32(resj, 11));
+#else
+         res16 = 0.03125f*resj;
+#endif
+         /* Compute codeword energy */
+         E[i]=MAC16_16(E[i],res16,res16);
+         res[j] = res16;
+         /*printf ("%d\n", (int)res[j]);*/
+      }
+   }
+
+}
+#endif
+
+#ifndef OVERRIDE_TARGET_UPDATE
+static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
+{
+   int n;
+   int q=0;
+   for (n=0;n<len;n++,q++)
+      t[n] = SUB32(t[n],MULT16_16_Q11_32(g,r[q]));
+}
+#endif
+
+
+
+static void split_cb_search_shape_sign_N1(
+spx_sig_t target[],			/* target vector */
+spx_coef_t ak[],			/* LPCs for this subframe */
+spx_coef_t awk1[],			/* Weighted LPCs for this subframe */
+spx_coef_t awk2[],			/* Weighted LPCs for this subframe */
+const void *par,                      /* Codebook/search parameters*/
+int   p,                        /* number of LPC coeffs */
+int   nsf,                      /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int   complexity,
+int   update_target
+)
+{
+   int i,j,m,q;
+#ifndef FIXED_POINT
+   int n;
+#endif
+   VARDECL(spx_word16_t *resp);
+#ifdef _USE_SSE
+   VARDECL(__m128 *resp2);
+   VARDECL(__m128 *E);
+#else
+   spx_word16_t *resp2;
+   VARDECL(spx_word32_t *E);
+#endif
+   VARDECL(spx_word16_t *t);
+   VARDECL(spx_sig_t *e);
+   const signed char *shape_cb;
+   int shape_cb_size, subvect_size, nb_subvect;
+   const split_cb_params *params;
+   int N=2;
+   int best_index;
+   spx_word32_t best_dist;
+   int have_sign;
+   N=complexity;
+   if (N>10)
+      N=10;
+   if (N<1)
+      N=1;
+   
+   params = (const split_cb_params *) par;
+   subvect_size = params->subvect_size;
+   nb_subvect = params->nb_subvect;
+   shape_cb_size = 1<<params->shape_bits;
+   shape_cb = params->shape_cb;
+   have_sign = params->have_sign;
+   ALLOC(resp, shape_cb_size*subvect_size, spx_word16_t);
+#ifdef _USE_SSE
+   ALLOC(resp2, (shape_cb_size*subvect_size)>>2, __m128);
+   ALLOC(E, shape_cb_size>>2, __m128);
+#else
+   resp2 = resp;
+   ALLOC(E, shape_cb_size, spx_word32_t);
+#endif
+   ALLOC(t, nsf, spx_word16_t);
+   ALLOC(e, nsf, spx_sig_t);
+   
+   /* FIXME: make that adaptive? */
+   for (i=0;i<nsf;i++)
+      t[i]=EXTRACT16(PSHR32(target[i],6));
+
+   compute_weighted_codebook(shape_cb, r, resp, resp2, E, shape_cb_size, subvect_size, stack);
+
+   for (i=0;i<nb_subvect;i++)
+   {
+      spx_word16_t *x=t+subvect_size*i;
+      /*Find new n-best based on previous n-best j*/
+      if (have_sign)
+         vq_nbest_sign(x, resp2, subvect_size, shape_cb_size, E, 1, &best_index, &best_dist, stack);
+      else
+         vq_nbest(x, resp2, subvect_size, shape_cb_size, E, 1, &best_index, &best_dist, stack);
+      
+      speex_bits_pack(bits,best_index,params->shape_bits+have_sign);
+      
+      {
+         int rind;
+         spx_word16_t *res;
+         spx_word16_t sign=1;
+         rind = best_index;
+         if (rind>=shape_cb_size)
+         {
+            sign=-1;
+            rind-=shape_cb_size;
+         }
+         res = resp+rind*subvect_size;
+         if (sign>0)
+            for (m=0;m<subvect_size;m++)
+               t[subvect_size*i+m] = SUB16(t[subvect_size*i+m], res[m]);
+         else
+            for (m=0;m<subvect_size;m++)
+               t[subvect_size*i+m] = ADD16(t[subvect_size*i+m], res[m]);
+
+#ifdef FIXED_POINT
+         if (sign)
+         {
+            for (j=0;j<subvect_size;j++)
+               e[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5);
+         } else {
+            for (j=0;j<subvect_size;j++)
+               e[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5));
+         }
+#else
+         for (j=0;j<subvect_size;j++)
+            e[subvect_size*i+j]=sign*0.03125*shape_cb[rind*subvect_size+j];
+#endif
+      
+      }
+            
+      for (m=0;m<subvect_size;m++)
+      {
+         spx_word16_t g;
+         int rind;
+         spx_word16_t sign=1;
+         rind = best_index;
+         if (rind>=shape_cb_size)
+         {
+            sign=-1;
+            rind-=shape_cb_size;
+         }
+         
+         q=subvect_size-m;
+#ifdef FIXED_POINT
+         g=sign*shape_cb[rind*subvect_size+m];
+         target_update(t+subvect_size*(i+1), g, r+q, nsf-subvect_size*(i+1));
+#else
+         g=sign*0.03125*shape_cb[rind*subvect_size+m];
+         /*FIXME: I think that one too can be replaced by target_update */
+         for (n=subvect_size*(i+1);n<nsf;n++,q++)
+            t[n] = SUB32(t[n],g*r[q]);
+#endif
+      }
+   }
+
+   /* Update excitation */
+   /* FIXME: We could update the excitation directly above */
+   for (j=0;j<nsf;j++)
+      exc[j]=ADD32(exc[j],e[j]);
+   
+   /* Update target: only update target if necessary */
+   if (update_target)
+   {
+      VARDECL(spx_sig_t *r2);
+      ALLOC(r2, nsf, spx_sig_t);
+      syn_percep_zero(e, ak, awk1, awk2, r2, nsf,p, stack);
+      for (j=0;j<nsf;j++)
+         target[j]=SUB32(target[j],r2[j]);
+   }
+}
+
+
+
+void split_cb_search_shape_sign(
+spx_sig_t target[],			/* target vector */
+spx_coef_t ak[],			/* LPCs for this subframe */
+spx_coef_t awk1[],			/* Weighted LPCs for this subframe */
+spx_coef_t awk2[],			/* Weighted LPCs for this subframe */
+const void *par,                      /* Codebook/search parameters*/
+int   p,                        /* number of LPC coeffs */
+int   nsf,                      /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int   complexity,
+int   update_target
+)
+{
+   int i,j,k,m,n,q;
+   VARDECL(spx_word16_t *resp);
+#ifdef _USE_SSE
+   VARDECL(__m128 *resp2);
+   VARDECL(__m128 *E);
+#else
+   spx_word16_t *resp2;
+   VARDECL(spx_word32_t *E);
+#endif
+   VARDECL(spx_word16_t *t);
+   VARDECL(spx_sig_t *e);
+   VARDECL(spx_sig_t *r2);
+   VARDECL(spx_word16_t *tmp);
+   VARDECL(spx_word32_t *ndist);
+   VARDECL(spx_word32_t *odist);
+   VARDECL(int *itmp);
+   VARDECL(spx_word16_t **ot2);
+   VARDECL(spx_word16_t **nt2);
+   spx_word16_t **ot, **nt;
+   VARDECL(int **nind);
+   VARDECL(int **oind);
+   VARDECL(int *ind);
+   const signed char *shape_cb;
+   int shape_cb_size, subvect_size, nb_subvect;
+   const split_cb_params *params;
+   int N=2;
+   VARDECL(int *best_index);
+   VARDECL(spx_word32_t *best_dist);
+   VARDECL(int *best_nind);
+   VARDECL(int *best_ntarget);
+   int have_sign;
+   N=complexity;
+   if (N>10)
+      N=10;
+   if (N<1)
+      N=1;
+   
+   if (N==1)
+   {
+      split_cb_search_shape_sign_N1(target,ak,awk1,awk2,par,p,nsf,exc,r,bits,stack,complexity,update_target);
+      return;
+   }
+   ALLOC(ot2, N, spx_word16_t*);
+   ALLOC(nt2, N, spx_word16_t*);
+   ALLOC(oind, N, int*);
+   ALLOC(nind, N, int*);
+
+   params = (const split_cb_params *) par;
+   subvect_size = params->subvect_size;
+   nb_subvect = params->nb_subvect;
+   shape_cb_size = 1<<params->shape_bits;
+   shape_cb = params->shape_cb;
+   have_sign = params->have_sign;
+   ALLOC(resp, shape_cb_size*subvect_size, spx_word16_t);
+#ifdef _USE_SSE
+   ALLOC(resp2, (shape_cb_size*subvect_size)>>2, __m128);
+   ALLOC(E, shape_cb_size>>2, __m128);
+#else
+   resp2 = resp;
+   ALLOC(E, shape_cb_size, spx_word32_t);
+#endif
+   ALLOC(t, nsf, spx_word16_t);
+   ALLOC(e, nsf, spx_sig_t);
+   ALLOC(r2, nsf, spx_sig_t);
+   ALLOC(ind, nb_subvect, int);
+
+   ALLOC(tmp, 2*N*nsf, spx_word16_t);
+   for (i=0;i<N;i++)
+   {
+      ot2[i]=tmp+2*i*nsf;
+      nt2[i]=tmp+(2*i+1)*nsf;
+   }
+   ot=ot2;
+   nt=nt2;
+   ALLOC(best_index, N, int);
+   ALLOC(best_dist, N, spx_word32_t);
+   ALLOC(best_nind, N, int);
+   ALLOC(best_ntarget, N, int);
+   ALLOC(ndist, N, spx_word32_t);
+   ALLOC(odist, N, spx_word32_t);
+   
+   ALLOC(itmp, 2*N*nb_subvect, int);
+   for (i=0;i<N;i++)
+   {
+      nind[i]=itmp+2*i*nb_subvect;
+      oind[i]=itmp+(2*i+1)*nb_subvect;
+   }
+   
+   /* FIXME: make that adaptive? */
+   for (i=0;i<nsf;i++)
+      t[i]=EXTRACT16(PSHR32(target[i],6));
+
+   for (j=0;j<N;j++)
+      speex_move(&ot[j][0], t, nsf*sizeof(spx_word16_t));
+
+   /* Pre-compute codewords response and energy */
+   compute_weighted_codebook(shape_cb, r, resp, resp2, E, shape_cb_size, subvect_size, stack);
+
+   for (j=0;j<N;j++)
+      odist[j]=0;
+   
+   /*For all subvectors*/
+   for (i=0;i<nb_subvect;i++)
+   {
+      /*"erase" nbest list*/
+      for (j=0;j<N;j++)
+         ndist[j]=VERY_LARGE32;
+
+      /*For all n-bests of previous subvector*/
+      for (j=0;j<N;j++)
+      {
+         spx_word16_t *x=ot[j]+subvect_size*i;
+         spx_word32_t tener = 0;
+         for (m=0;m<subvect_size;m++)
+            tener = MAC16_16(tener, x[m],x[m]);
+#ifdef FIXED_POINT
+         tener = SHR32(tener,1);
+#else
+         tener *= .5;
+#endif
+         /*Find new n-best based on previous n-best j*/
+         if (have_sign)
+            vq_nbest_sign(x, resp2, subvect_size, shape_cb_size, E, N, best_index, best_dist, stack);
+         else
+            vq_nbest(x, resp2, subvect_size, shape_cb_size, E, N, best_index, best_dist, stack);
+
+         /*For all new n-bests*/
+         for (k=0;k<N;k++)
+         {
+            /* Compute total distance (including previous sub-vectors */
+            spx_word32_t err = ADD32(ADD32(odist[j],best_dist[k]),tener);
+            
+            /*update n-best list*/
+            if (err<ndist[N-1])
+            {
+               for (m=0;m<N;m++)
+               {
+                  if (err < ndist[m])
+                  {
+                     for (n=N-1;n>m;n--)
+                     {
+                        ndist[n] = ndist[n-1];
+                        best_nind[n] = best_nind[n-1];
+                        best_ntarget[n] = best_ntarget[n-1];
+                     }
+                     ndist[m] = err;
+                     best_nind[n] = best_index[k];
+                     best_ntarget[n] = j;
+                     break;
+                  }
+               }
+            }
+         }
+         if (i==0)
+            break;
+      }
+      for (j=0;j<N;j++)
+      {
+         /*previous target (we don't care what happened before*/
+         for (m=(i+1)*subvect_size;m<nsf;m++)
+            nt[j][m]=ot[best_ntarget[j]][m];
+         
+         /* New code: update the rest of the target only if it's worth it */
+         for (m=0;m<subvect_size;m++)
+         {
+            spx_word16_t g;
+            int rind;
+            spx_word16_t sign=1;
+            rind = best_nind[j];
+            if (rind>=shape_cb_size)
+            {
+               sign=-1;
+               rind-=shape_cb_size;
+            }
+
+            q=subvect_size-m;
+#ifdef FIXED_POINT
+            g=sign*shape_cb[rind*subvect_size+m];
+            target_update(nt[j]+subvect_size*(i+1), g, r+q, nsf-subvect_size*(i+1));
+#else
+            g=sign*0.03125*shape_cb[rind*subvect_size+m];
+            /*FIXME: I think that one too can be replaced by target_update */
+            for (n=subvect_size*(i+1);n<nsf;n++,q++)
+               nt[j][n] = SUB32(nt[j][n],g*r[q]);
+#endif
+         }
+
+         for (q=0;q<nb_subvect;q++)
+            nind[j][q]=oind[best_ntarget[j]][q];
+         nind[j][i]=best_nind[j];
+      }
+
+      /*update old-new data*/
+      /* just swap pointers instead of a long copy */
+      {
+         spx_word16_t **tmp2;
+         tmp2=ot;
+         ot=nt;
+         nt=tmp2;
+      }
+      for (j=0;j<N;j++)
+         for (m=0;m<nb_subvect;m++)
+            oind[j][m]=nind[j][m];
+      for (j=0;j<N;j++)
+         odist[j]=ndist[j];
+   }
+
+   /*save indices*/
+   for (i=0;i<nb_subvect;i++)
+   {
+      ind[i]=nind[0][i];
+      speex_bits_pack(bits,ind[i],params->shape_bits+have_sign);
+   }
+   
+   /* Put everything back together */
+   for (i=0;i<nb_subvect;i++)
+   {
+      int rind;
+      spx_word16_t sign=1;
+      rind = ind[i];
+      if (rind>=shape_cb_size)
+      {
+         sign=-1;
+         rind-=shape_cb_size;
+      }
+#ifdef FIXED_POINT
+      if (sign==1)
+      {
+         for (j=0;j<subvect_size;j++)
+            e[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5);
+      } else {
+         for (j=0;j<subvect_size;j++)
+            e[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5));
+      }
+#else
+      for (j=0;j<subvect_size;j++)
+         e[subvect_size*i+j]=sign*0.03125*shape_cb[rind*subvect_size+j];
+#endif
+   }   
+   /* Update excitation */
+   for (j=0;j<nsf;j++)
+      exc[j]=ADD32(exc[j],e[j]);
+   
+   /* Update target: only update target if necessary */
+   if (update_target)
+   {
+      syn_percep_zero(e, ak, awk1, awk2, r2, nsf,p, stack);
+      for (j=0;j<nsf;j++)
+         target[j]=SUB32(target[j],r2[j]);
+   }
+}
+
+
+void split_cb_shape_sign_unquant(
+spx_sig_t *exc,
+const void *par,                      /* non-overlapping codebook */
+int   nsf,                      /* number of samples in subframe */
+SpeexBits *bits,
+char *stack
+)
+{
+   int i,j;
+   VARDECL(int *ind);
+   VARDECL(int *signs);
+   const signed char *shape_cb;
+   int shape_cb_size, subvect_size, nb_subvect;
+   const split_cb_params *params;
+   int have_sign;
+
+   params = (const split_cb_params *) par;
+   subvect_size = params->subvect_size;
+   nb_subvect = params->nb_subvect;
+   shape_cb_size = 1<<params->shape_bits;
+   shape_cb = params->shape_cb;
+   have_sign = params->have_sign;
+
+   ALLOC(ind, nb_subvect, int);
+   ALLOC(signs, nb_subvect, int);
+
+   /* Decode codewords and gains */
+   for (i=0;i<nb_subvect;i++)
+   {
+      if (have_sign)
+         signs[i] = speex_bits_unpack_unsigned(bits, 1);
+      else
+         signs[i] = 0;
+      ind[i] = speex_bits_unpack_unsigned(bits, params->shape_bits);
+   }
+   /* Compute decoded excitation */
+   for (i=0;i<nb_subvect;i++)
+   {
+      spx_word16_t s=1;
+      if (signs[i])
+         s=-1;
+#ifdef FIXED_POINT
+      if (s==1)
+      {
+         for (j=0;j<subvect_size;j++)
+            exc[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[ind[i]*subvect_size+j]),SIG_SHIFT-5);
+      } else {
+         for (j=0;j<subvect_size;j++)
+            exc[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[ind[i]*subvect_size+j]),SIG_SHIFT-5));
+      }
+#else
+      for (j=0;j<subvect_size;j++)
+         exc[subvect_size*i+j]+=s*0.03125*shape_cb[ind[i]*subvect_size+j];      
+#endif
+   }
+}
+
+void noise_codebook_quant(
+spx_sig_t target[],			/* target vector */
+spx_coef_t ak[],			/* LPCs for this subframe */
+spx_coef_t awk1[],			/* Weighted LPCs for this subframe */
+spx_coef_t awk2[],			/* Weighted LPCs for this subframe */
+const void *par,                      /* Codebook/search parameters*/
+int   p,                        /* number of LPC coeffs */
+int   nsf,                      /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int   complexity,
+int   update_target
+)
+{
+   int i;
+   VARDECL(spx_sig_t *tmp);
+   ALLOC(tmp, nsf, spx_sig_t);
+   residue_percep_zero(target, ak, awk1, awk2, tmp, nsf, p, stack);
+
+   for (i=0;i<nsf;i++)
+      exc[i]+=tmp[i];
+   for (i=0;i<nsf;i++)
+      target[i]=0;
+
+}
+
+
+void noise_codebook_unquant(
+spx_sig_t *exc,
+const void *par,                      /* non-overlapping codebook */
+int   nsf,                      /* number of samples in subframe */
+SpeexBits *bits,
+char *stack
+)
+{
+   speex_rand_vec(1, exc, nsf);
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/cb_search.h b/pjmedia/src/pjmedia-codec/speex/cb_search.h
new file mode 100644
index 00000000..38ac077a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/cb_search.h
@@ -0,0 +1,101 @@
+/* Copyright (C) 2002 Jean-Marc Valin & David Rowe */
+/**
+   @file cb_search.h
+   @brief Overlapped codebook search
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CB_SEARCH_H
+#define CB_SEARCH_H
+
+#include <speex/speex_bits.h>
+#include "misc.h"
+
+/** Split codebook parameters. */
+typedef struct split_cb_params {
+   int     subvect_size;
+   int     nb_subvect;
+   const signed char  *shape_cb;
+   int     shape_bits;
+   int     have_sign;
+} split_cb_params;
+
+
+void split_cb_search_shape_sign(
+spx_sig_t target[],             /* target vector */
+spx_coef_t ak[],                /* LPCs for this subframe */
+spx_coef_t awk1[],              /* Weighted LPCs for this subframe */
+spx_coef_t awk2[],              /* Weighted LPCs for this subframe */
+const void *par,                /* Codebook/search parameters */
+int   p,                        /* number of LPC coeffs */
+int   nsf,                      /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int   complexity,
+int   update_target
+);
+
+void split_cb_shape_sign_unquant(
+spx_sig_t *exc,
+const void *par,                /* non-overlapping codebook */
+int   nsf,                      /* number of samples in subframe */
+SpeexBits *bits,
+char *stack
+);
+
+
+void noise_codebook_quant(
+spx_sig_t target[],             /* target vector */
+spx_coef_t ak[],                /* LPCs for this subframe */
+spx_coef_t awk1[],              /* Weighted LPCs for this subframe */
+spx_coef_t awk2[],              /* Weighted LPCs for this subframe */
+const void *par,                /* Codebook/search parameters */
+int   p,                        /* number of LPC coeffs */
+int   nsf,                      /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int   complexity,
+int   update_target
+);
+
+
+void noise_codebook_unquant(
+spx_sig_t *exc,
+const void *par,                /* non-overlapping codebook */
+int   nsf,                      /* number of samples in subframe */
+SpeexBits *bits,
+char *stack
+);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/cb_search_arm4.h b/pjmedia/src/pjmedia-codec/speex/cb_search_arm4.h
new file mode 100644
index 00000000..19b752a4
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/cb_search_arm4.h
@@ -0,0 +1,137 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file cb_search_arm4.h
+   @brief Fixed codebook functions (ARM4 version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* This optimization is temporaly disabled until it is fixed to account for the fact 
+   that "r" is now a 16-bit array */
+#if 0
+#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
+static void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
+{
+   int i, j, k;
+  //const signed char *shape;
+   for (i=0;i<shape_cb_size;i+=4)
+   {
+
+      //shape = shape_cb;
+      E[0]=0;
+      E[1]=0;
+      E[2]=0;
+      E[3]=0;
+
+      /* Compute codeword response using convolution with impulse response */
+      for(j=0;j<subvect_size;j++)
+      {
+#if 1
+          spx_word16_t *res;
+          res = resp+j;
+          spx_word32_t resj0,resj1,resj2,resj3;
+          spx_word32_t dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8;
+          __asm__ __volatile__ (
+                "mov %0, #0 \n\t"
+                "mov %1, #0 \n\t"
+                "mov %2, #0 \n\t"
+                "mov %3, #0 \n\t"
+                ".weighted%=: \n\t"
+                "ldrsb %8, [%6] \n\t"
+                "ldr %10, [%5], #-4 \n\t"
+                "mov %9, %6 \n\t"
+                "ldrsb %11, [%9, %7]! \n\t"
+                "mla %0, %10, %8, %0 \n\t"
+                "ldrsb %8, [%9, %7]! \n\t"
+                "mla %1, %10, %11, %1 \n\t"
+                "ldrsb %11, [%9, %7]! \n\t"
+                "mla %2, %10, %8, %2 \n\t"
+                "subs %4, %4, #1 \n\t"
+                "mla %3, %10, %11, %3 \n\t"
+                "add %6, %6, #1 \n\t"
+                "bne .weighted%= \n\t"
+            : "=r" (resj0), "=r" (resj1), "=r" (resj2), "=r" (resj3),
+          "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
+          "=r" (dead5), "=r" (dead6), "=r" (dead7), "=r" (dead8)
+            : "4" (j+1), "5" (r+j), "6" (shape_cb), "7" (subvect_size)
+            : "cc", "memory");
+#else
+          spx_word16_t *res;
+          res = resp+j;
+          spx_word32_t resj0=0;
+          spx_word32_t resj1=0;
+          spx_word32_t resj2=0;
+          spx_word32_t resj3=0;
+          for (k=0;k<=j;k++)
+          {
+             const signed char *shape=shape_cb+k;
+             resj0 = MAC16_16(resj0,*shape,r[j-k]);
+             shape += subvect_size;
+             resj1 = MAC16_16(resj1,*shape,r[j-k]);
+             shape += subvect_size;
+             resj2 = MAC16_16(resj2,*shape,r[j-k]);
+             shape += subvect_size;
+             resj3 = MAC16_16(resj3,*shape,r[j-k]);
+             shape += subvect_size;
+          }
+#endif
+
+#ifdef FIXED_POINT
+          resj0 = SHR(resj0, 11);
+          resj1 = SHR(resj1, 11);
+          resj2 = SHR(resj2, 11);
+          resj3 = SHR(resj3, 11);
+#else
+          resj0 *= 0.03125;
+          resj1 *= 0.03125;
+          resj2 *= 0.03125;
+          resj3 *= 0.03125;
+#endif
+
+          /* Compute codeword energy */
+          E[0]=ADD32(E[0],MULT16_16(resj0,resj0));
+          E[1]=ADD32(E[1],MULT16_16(resj1,resj1));
+          E[2]=ADD32(E[2],MULT16_16(resj2,resj2));
+          E[3]=ADD32(E[3],MULT16_16(resj3,resj3));
+          *res = resj0;
+          res += subvect_size;
+          *res = resj1;
+          res += subvect_size;
+          *res = resj2;
+          res += subvect_size;
+          *res = resj3;
+          res += subvect_size;
+      }
+      resp += subvect_size<<2;
+      shape_cb += subvect_size<<2;
+      E+=4;
+   }
+
+}
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/cb_search_bfin.h b/pjmedia/src/pjmedia-codec/speex/cb_search_bfin.h
new file mode 100644
index 00000000..7d476a36
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/cb_search_bfin.h
@@ -0,0 +1,105 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @author Jean-Marc Valin 
+   @file cb_search_bfin.h
+   @brief Fixed codebook functions (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK 
+void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
+{
+   int i;
+   for (i=0;i<shape_cb_size;i++)
+   {
+      __asm__ __volatile__ (
+         "P0 = %0;\n\t"
+         "LC0 = P0;\n\t"
+         "P1 = %1;\n\t"
+         "P2 = %2;\n\t"
+         "P3 = %3;\n\t"
+         "P0 = 1;\n\t"
+         "L0 = 0;\n\t"
+         "L1 = 0;\n\t"
+         "R2 = 0;\n\t"
+         "A1 = 0;\n\t"
+         "LOOP outter%= LC0;\n\t"
+         "LOOP_BEGIN outter%=;\n\t"
+            "A0 = 0;\n\t"
+            "P4 = P1;\n\t"
+            "I1 = P2;\n\t"
+            "R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
+            "LOOP inner%= LC1 = P0;\n\t"
+            "LOOP_BEGIN inner%=;\n\t"
+               "A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
+            "LOOP_END inner%=;\n\t"
+            "R0 = A0;\n\t"
+            "R0 >>>= 11;\n\t"
+            "A1 += R0.L*R0.L (IS);\n\t"
+            "W[P3++] = R0;\n\t"
+            "P0 += 1;\n\t"
+            "P2 += 2;\n\t"
+         "LOOP_END outter%=;\n\t"
+         "P4 = %4;\n\t"
+         "R1 = A1;\n\t"
+         "[P4] = R1;\n\t"
+         :
+      : "m" (subvect_size), "m" (shape_cb), "m" (r), "m" (resp), "m" (E)
+      : "A0", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "I0", "I1", "L0", "L1", "A0", "A1", "memory"
+      );
+      shape_cb += subvect_size;
+      resp += subvect_size;
+      E++;
+   }
+}
+
+#define OVERRIDE_TARGET_UPDATE
+static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
+{
+   __asm__ __volatile__
+         (
+         "I0 = %0;\n\t"
+         "I1 = %1;\n\t"
+         "L0 = 0;\n\t"
+         "L1 = 0;\n\t"
+         "LOOP tupdate%= LC0 = %3;\n\t"
+         "LOOP_BEGIN tupdate%=;\n\t"
+            "R0.L = W[I0] || R1.L = W[I1++];\n\t"
+            "R1 = (A1 = R1.L*%2.L) (IS);\n\t"
+            "R1 >>>= 11;\n\t"
+            "R0.L = R0.L - R1.L;\n\t"
+            "W[I0++] = R0.L;\n\t"
+         "LOOP_END tupdate%=;\n\t"
+   :
+   : "a" (t), "a" (r), "d" (g), "a" (len)
+   : "R0", "R1", "A1", "I0", "I1", "L0", "L1"
+         );
+}
+
diff --git a/pjmedia/src/pjmedia-codec/speex/cb_search_sse.h b/pjmedia/src/pjmedia-codec/speex/cb_search_sse.h
new file mode 100644
index 00000000..8b039686
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/cb_search_sse.h
@@ -0,0 +1,84 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file cb_search_sse.h
+   @brief Fixed codebook functions (SSE version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <xmmintrin.h>
+
+static inline void _spx_mm_getr_ps (__m128 U, float *__Z, float *__Y, float *__X, float *__W)
+{
+  union {
+    float __a[4];
+    __m128 __v;
+  } __u;
+  
+  __u.__v = U;
+
+  *__Z = __u.__a[0];
+  *__Y = __u.__a[1];
+  *__X = __u.__a[2];
+  *__W = __u.__a[3];
+
+}
+
+#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
+static void compute_weighted_codebook(const signed char *shape_cb, const spx_sig_t *_r, float *resp, __m128 *resp2, __m128 *E, int shape_cb_size, int subvect_size, char *stack)
+{
+   int i, j, k;
+   __m128 resj, EE;
+   VARDECL(__m128 *r);
+   VARDECL(__m128 *shape);
+   ALLOC(r, subvect_size, __m128);
+   ALLOC(shape, subvect_size, __m128);
+   for(j=0;j<subvect_size;j++)
+      r[j] = _mm_load_ps1(_r+j);
+   for (i=0;i<shape_cb_size;i+=4)
+   {
+      float *_res = resp+i*subvect_size;
+      const signed char *_shape = shape_cb+i*subvect_size;
+      EE = _mm_setzero_ps();
+      for(j=0;j<subvect_size;j++)
+      {
+         shape[j] = _mm_setr_ps(0.03125*_shape[j], 0.03125*_shape[subvect_size+j], 0.03125*_shape[2*subvect_size+j], 0.03125*_shape[3*subvect_size+j]);
+      }
+      for(j=0;j<subvect_size;j++)
+      {
+         resj = _mm_setzero_ps();
+         for (k=0;k<=j;k++)
+            resj = _mm_add_ps(resj, _mm_mul_ps(shape[k],r[j-k]));
+         _spx_mm_getr_ps(resj, _res+j, _res+subvect_size+j, _res+2*subvect_size+j, _res+3*subvect_size+j);
+         *resp2++ = resj;
+         EE = _mm_add_ps(EE, _mm_mul_ps(resj, resj));
+      }
+      E[i>>2] = EE;
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/config.h b/pjmedia/src/pjmedia-codec/speex/config.h
new file mode 100644
index 00000000..0bb4998a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/config.h
@@ -0,0 +1,7 @@
+
+#include <pj/config.h>
+
+#define inline __inline
+#define restrict
+
+#include "misc.h"
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_10_16_table.c b/pjmedia/src/pjmedia-codec/speex/exc_10_16_table.c
new file mode 100644
index 00000000..98ae357d
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_10_16_table.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_10_16_table.c
+   Codebook for excitation in narrowband CELP mode (3200 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_10_16_table[160] = {
+22,39,14,44,11,35,-2,23,-4,6,
+46,-28,13,-27,-23,12,4,20,-5,9,
+37,-18,-23,23,0,9,-6,-20,4,-1,
+-17,-5,-4,17,0,1,9,-2,1,2,
+2,-12,8,-25,39,15,9,16,-55,-11,
+9,11,5,10,-2,-60,8,13,-6,11,
+-16,27,-47,-12,11,1,16,-7,9,-3,
+-29,9,-14,25,-19,34,36,12,40,-10,
+-3,-24,-14,-37,-21,-35,-2,-36,3,-6,
+67,28,6,-17,-3,-12,-16,-15,-17,-7,
+-59,-36,-13,1,7,1,2,10,2,11,
+13,10,8,-2,7,3,5,4,2,2,
+-3,-8,4,-5,6,7,-42,15,35,-2,
+-46,38,28,-20,-9,1,7,-3,0,-2,
+0,0,0,0,0,0,0,0,0,0,
+-15,-28,52,32,5,-5,-17,-20,-10,-1};
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_10_32_table.c b/pjmedia/src/pjmedia-codec/speex/exc_10_32_table.c
new file mode 100644
index 00000000..1ee56a25
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_10_32_table.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_10_32_table.c
+   Codebook for excitation in narrowband CELP mode (4000 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_10_32_table[320] = {
+7,17,17,27,25,22,12,4,-3,0,
+28,-36,39,-24,-15,3,-9,15,-5,10,
+31,-28,11,31,-21,9,-11,-11,-2,-7,
+-25,14,-22,31,4,-14,19,-12,14,-5,
+4,-7,4,-5,9,0,-2,42,-47,-16,
+1,8,0,9,23,-57,0,28,-11,6,
+-31,55,-45,3,-5,4,2,-2,4,-7,
+-3,6,-2,7,-3,12,5,8,54,-10,
+8,-7,-8,-24,-25,-27,-14,-5,8,5,
+44,23,5,-9,-11,-11,-13,-9,-12,-8,
+-29,-8,-22,6,-15,3,-12,-1,-5,-3,
+34,-1,29,-16,17,-4,12,2,1,4,
+-2,-4,2,-1,11,-3,-52,28,30,-9,
+-32,25,44,-20,-24,4,6,-1,0,0,
+0,0,0,0,0,0,0,0,0,0,
+-25,-10,22,29,13,-13,-22,-13,-4,0,
+-4,-16,10,15,-36,-24,28,25,-1,-3,
+66,-33,-11,-15,6,0,3,4,-2,5,
+24,-20,-47,29,19,-2,-4,-1,0,-1,
+-2,3,1,8,-11,5,5,-57,28,28,
+0,-16,4,-4,12,-6,-1,2,-20,61,
+-9,24,-22,-42,29,6,17,8,4,2,
+-65,15,8,10,5,6,5,3,2,-2,
+-3,5,-9,4,-5,23,13,23,-3,-63,
+3,-5,-4,-6,0,-3,23,-36,-46,9,
+5,5,8,4,9,-5,1,-3,10,1,
+-6,10,-11,24,-47,31,22,-12,14,-10,
+6,11,-7,-7,7,-31,51,-12,-6,7,
+6,-17,9,-11,-20,52,-19,3,-6,-6,
+-8,-5,23,-41,37,1,-21,10,-14,8,
+7,5,-15,-15,23,39,-26,-33,7,2,
+-32,-30,-21,-8,4,12,17,15,14,11};
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_20_32_table.c b/pjmedia/src/pjmedia-codec/speex/exc_20_32_table.c
new file mode 100644
index 00000000..e4098b8d
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_20_32_table.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_20_32_table.c
+   Codebook for excitation in narrowband CELP mode (2000 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_20_32_table[640] = {
+12,32,25,46,36,33,9,14,-3,6,1,-8,0,-10,-5,-7,-7,-7,-5,-5,
+31,-27,24,-32,-4,10,-11,21,-3,19,23,-9,22,24,-10,-1,-10,-13,-7,-11,
+42,-33,31,19,-8,0,-10,-16,1,-21,-17,10,-8,14,8,4,11,-2,5,-2,
+-33,11,-16,33,11,-4,9,-4,11,2,6,-5,8,-5,11,-4,-6,26,-36,-16,
+0,4,-2,-8,12,6,-1,34,-46,-22,9,9,21,9,5,-66,-5,26,2,10,
+13,2,19,9,12,-81,3,13,13,0,-14,22,-35,6,-7,-4,6,-6,10,-6,
+-31,38,-33,0,-10,-11,5,-12,12,-17,5,0,-6,13,-9,10,8,25,33,2,
+-12,8,-6,10,-2,21,7,17,43,5,11,-7,-9,-20,-36,-20,-23,-4,-4,-3,
+27,-9,-9,-49,-39,-38,-11,-9,6,5,23,25,5,3,3,4,1,2,-3,-1,
+87,39,17,-21,-9,-19,-9,-15,-13,-14,-17,-11,-10,-11,-8,-6,-1,-3,-3,-1,
+-54,-34,-27,-8,-11,-4,-5,0,0,4,8,6,9,7,9,7,6,5,5,5,
+48,10,19,-10,12,-1,9,-3,2,5,-3,2,-2,-2,0,-2,-26,6,9,-7,
+-16,-9,2,7,7,-5,-43,11,22,-11,-9,34,37,-15,-13,-6,1,-1,1,1,
+-64,56,52,-11,-27,5,4,3,1,2,1,3,-1,-4,-4,-10,-7,-4,-4,2,
+-1,-7,-7,-12,-10,-15,-9,-5,-5,-11,-16,-13,6,16,4,-13,-16,-10,-4,2,
+-47,-13,25,47,19,-14,-20,-8,-17,0,-3,-13,1,6,-17,-14,15,1,10,6,
+-24,0,-10,19,-69,-8,14,49,17,-5,33,-29,3,-4,0,2,-8,5,-6,2,
+120,-56,-12,-47,23,-9,6,-5,1,2,-5,1,-10,4,-1,-1,4,-1,0,-3,
+30,-52,-67,30,22,11,-1,-4,3,0,7,2,0,1,-10,-4,-8,-13,5,1,
+1,-1,5,13,-9,-3,-10,-62,22,48,-4,-6,2,3,5,1,1,4,1,13,
+3,-20,10,-9,13,-2,-4,9,-20,44,-1,20,-32,-67,19,0,28,11,8,2,
+-11,15,-19,-53,31,2,34,10,6,-4,-58,8,10,13,14,1,12,2,0,0,
+-128,37,-8,44,-9,26,-3,18,2,6,11,-1,9,1,5,3,0,1,1,2,
+12,3,-2,-3,7,25,9,18,-6,-37,3,-8,-16,3,-10,-7,17,-34,-44,11,
+17,-15,-3,-16,-1,-13,11,-46,-65,-2,8,13,2,4,4,5,15,5,9,6,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+-9,19,-12,12,-28,38,29,-1,12,2,5,23,-10,3,4,-15,21,-4,3,3,
+6,17,-9,-4,-8,-20,26,5,-10,6,1,-19,18,-15,-12,47,-6,-2,-7,-9,
+-1,-17,-2,-2,-14,30,-14,2,-7,-4,-1,-12,11,-25,16,-3,-12,11,-7,7,
+-17,1,19,-28,31,-7,-10,7,-10,3,12,5,-16,6,24,41,-29,-54,0,1,
+7,-1,5,-6,13,10,-4,-8,8,-9,-27,-53,-38,-1,10,19,17,16,12,12,
+0,3,-7,-4,13,12,-31,-14,6,-5,3,5,17,43,50,25,10,1,-6,-2};
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_5_256_table.c b/pjmedia/src/pjmedia-codec/speex/exc_5_256_table.c
new file mode 100644
index 00000000..4137996d
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_5_256_table.c
@@ -0,0 +1,290 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_5_256_table.c
+   Codebook for excitation in narrowband CELP mode (12800 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_5_256_table[1280] = {
+-8,-37,5,-43,5,
+73,61,39,12,-3,
+-61,-32,2,42,30,
+-3,17,-27,9,34,
+20,-1,-5,2,23,
+-7,-46,26,53,-47,
+20,-2,-33,-89,-51,
+-64,27,11,15,-34,
+-5,-56,25,-9,-1,
+-29,1,40,67,-23,
+-16,16,33,19,7,
+14,85,22,-10,-10,
+-12,-7,-1,52,89,
+29,11,-20,-37,-46,
+-15,17,-24,-28,24,
+2,1,0,23,-101,
+23,14,-1,-23,-18,
+9,5,-13,38,1,
+-28,-28,4,27,51,
+-26,34,-40,35,47,
+54,38,-54,-26,-6,
+42,-25,13,-30,-36,
+18,41,-4,-33,23,
+-32,-7,-4,51,-3,
+17,-52,56,-47,36,
+-2,-21,36,10,8,
+-33,31,19,9,-5,
+-40,10,-9,-21,19,
+18,-78,-18,-5,0,
+-26,-36,-47,-51,-44,
+18,40,27,-2,29,
+49,-26,2,32,-54,
+30,-73,54,3,-5,
+36,22,53,10,-1,
+-84,-53,-29,-5,3,
+-44,53,-51,4,22,
+71,-35,-1,33,-5,
+-27,-7,36,17,-23,
+-39,16,-9,-55,-15,
+-20,39,-35,6,-39,
+-14,18,48,-64,-17,
+-15,9,39,81,37,
+-68,37,47,-21,-6,
+-104,13,6,9,-2,
+35,8,-23,18,42,
+45,21,33,-5,-49,
+9,-6,-43,-56,39,
+2,-16,-25,87,1,
+-3,-9,17,-25,-11,
+-9,-1,10,2,-14,
+-14,4,-1,-10,28,
+-23,40,-32,26,-9,
+26,4,-27,-23,3,
+42,-60,1,49,-3,
+27,10,-52,-40,-2,
+18,45,-23,17,-44,
+3,-3,17,-46,52,
+-40,-47,25,75,31,
+-49,53,30,-30,-32,
+-36,38,-6,-15,-16,
+54,-27,-48,3,38,
+-29,-32,-22,-14,-4,
+-23,-13,32,-39,9,
+8,-45,-13,34,-16,
+49,40,32,31,28,
+23,23,32,47,59,
+-68,8,62,44,25,
+-14,-24,-65,-16,36,
+67,-25,-38,-21,4,
+-33,-2,42,5,-63,
+40,11,26,-42,-23,
+-61,79,-31,23,-20,
+10,-32,53,-25,-36,
+10,-26,-5,3,0,
+-71,5,-10,-37,1,
+-24,21,-54,-17,1,
+-29,-25,-15,-27,32,
+68,45,-16,-37,-18,
+-5,1,0,-77,71,
+-6,3,-20,71,-67,
+29,-35,10,-30,19,
+4,16,17,5,0,
+-14,19,2,28,26,
+59,3,2,24,39,
+55,-50,-45,-18,-17,
+33,-35,14,-1,1,
+8,87,-35,-29,0,
+-27,13,-7,23,-13,
+37,-40,50,-35,14,
+19,-7,-14,49,54,
+-5,22,-2,-29,-8,
+-27,38,13,27,48,
+12,-41,-21,-15,28,
+7,-16,-24,-19,-20,
+11,-20,9,2,13,
+23,-20,11,27,-27,
+71,-69,8,2,-6,
+22,12,16,16,9,
+-16,-8,-17,1,25,
+1,40,-37,-33,66,
+94,53,4,-22,-25,
+-41,-42,25,35,-16,
+-15,57,31,-29,-32,
+21,16,-60,45,15,
+-1,7,57,-26,-47,
+-29,11,8,15,19,
+-105,-8,54,27,10,
+-17,6,-12,-1,-10,
+4,0,23,-10,31,
+13,11,10,12,-64,
+23,-3,-8,-19,16,
+52,24,-40,16,10,
+40,5,9,0,-13,
+-7,-21,-8,-6,-7,
+-21,59,16,-53,18,
+-60,11,-47,14,-18,
+25,-13,-24,4,-39,
+16,-28,54,26,-67,
+30,27,-20,-52,20,
+-12,55,12,18,-16,
+39,-14,-6,-26,56,
+-88,-55,12,25,26,
+-37,6,75,0,-34,
+-81,54,-30,1,-7,
+49,-23,-14,21,10,
+-62,-58,-57,-47,-34,
+15,-4,34,-78,31,
+25,-11,7,50,-10,
+42,-63,14,-36,-4,
+57,55,57,53,42,
+-42,-1,15,40,37,
+15,25,-11,6,1,
+31,-2,-6,-1,-7,
+-64,34,28,30,-1,
+3,21,0,-88,-12,
+-56,25,-28,40,8,
+-28,-14,9,12,2,
+-6,-17,22,49,-6,
+-26,14,28,-20,4,
+-12,50,35,40,13,
+-38,-58,-29,17,30,
+22,60,26,-54,-39,
+-12,58,-28,-63,10,
+-21,-8,-12,26,-62,
+6,-10,-11,-22,-6,
+-7,4,1,18,2,
+-70,11,14,4,13,
+19,-24,-34,24,67,
+17,51,-21,13,23,
+54,-30,48,1,-13,
+80,26,-16,-2,13,
+-4,6,-30,29,-24,
+73,-58,30,-27,20,
+-2,-21,41,45,30,
+-27,-3,-5,-18,-20,
+-49,-3,-35,10,42,
+-19,-67,-53,-11,9,
+13,-15,-33,-51,-30,
+15,7,25,-30,4,
+28,-22,-34,54,-29,
+39,-46,20,16,34,
+-4,47,75,1,-44,
+-55,-24,7,-1,9,
+-42,50,-8,-36,41,
+68,0,-4,-10,-23,
+-15,-50,64,36,-9,
+-27,12,25,-38,-47,
+-37,32,-49,51,-36,
+2,-4,69,-26,19,
+7,45,67,46,13,
+-63,46,15,-47,4,
+-41,13,-6,5,-21,
+37,26,-55,-7,33,
+-1,-28,10,-17,-64,
+-14,0,-36,-17,93,
+-3,-9,-66,44,-21,
+3,-12,38,-6,-13,
+-12,19,13,43,-43,
+-10,-12,6,-5,9,
+-49,32,-5,2,4,
+5,15,-16,10,-21,
+8,-62,-8,64,8,
+79,-1,-66,-49,-18,
+5,40,-5,-30,-45,
+1,-6,21,-32,93,
+-18,-30,-21,32,21,
+-18,22,8,5,-41,
+-54,80,22,-10,-7,
+-8,-23,-64,66,56,
+-14,-30,-41,-46,-14,
+-29,-37,27,-14,42,
+-2,-9,-29,34,14,
+33,-14,22,4,10,
+26,26,28,32,23,
+-72,-32,3,0,-14,
+35,-42,-78,-32,6,
+29,-18,-45,-5,7,
+-33,-45,-3,-22,-34,
+8,-8,4,-51,-25,
+-9,59,-78,21,-5,
+-25,-48,66,-15,-17,
+-24,-49,-13,25,-23,
+-64,-6,40,-24,-19,
+-11,57,-33,-8,1,
+10,-52,-54,28,39,
+49,34,-11,-61,-41,
+-43,10,15,-15,51,
+30,15,-51,32,-34,
+-2,-34,14,18,16,
+1,1,-3,-3,1,
+1,-18,6,16,48,
+12,-5,-42,7,36,
+48,7,-20,-10,7,
+12,2,54,39,-38,
+37,54,4,-11,-8,
+-46,-10,5,-10,-34,
+46,-12,29,-37,39,
+36,-11,24,56,17,
+14,20,25,0,-25,
+-28,55,-7,-5,27,
+3,9,-26,-8,6,
+-24,-10,-30,-31,-34,
+18,4,22,21,40,
+-1,-29,-37,-8,-21,
+92,-29,11,-3,11,
+73,23,22,7,4,
+-44,-9,-11,21,-13,
+11,9,-78,-1,47,
+114,-12,-37,-19,-5,
+-11,-22,19,12,-30,
+7,38,45,-21,-8,
+-9,55,-45,56,-21,
+7,17,46,-57,-87,
+-6,27,31,31,7,
+-56,-12,46,21,-5,
+-12,36,3,3,-21,
+43,19,12,-7,9,
+-14,0,-9,-33,-91,
+7,26,3,-11,64,
+83,-31,-46,25,2,
+9,5,2,2,-1,
+20,-17,10,-5,-27,
+-8,20,8,-19,16,
+-21,-13,-31,5,5,
+42,24,9,34,-20,
+28,-61,22,11,-39,
+64,-20,-1,-30,-9,
+-20,24,-25,-24,-29,
+22,-60,6,-5,41,
+-9,-87,14,34,15,
+-57,52,69,15,-3,
+-102,58,16,3,6,
+60,-75,-32,26,7,
+-57,-27,-32,-24,-21,
+-29,-16,62,-46,31,
+30,-27,-15,7,15};
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_5_64_table.c b/pjmedia/src/pjmedia-codec/speex/exc_5_64_table.c
new file mode 100644
index 00000000..2c66d518
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_5_64_table.c
@@ -0,0 +1,98 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_5_64_table.c
+   Codebook for excitation in narrowband CELP mode (9600 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_5_64_table[320]={
+1,5,-15,49,-66,
+-48,-4,50,-44,7,
+37,16,-18,25,-26,
+-26,-15,19,19,-27,
+-47,28,57,5,-17,
+-32,-41,68,21,-2,
+64,56,8,-16,-13,
+-26,-9,-16,11,6,
+-39,25,-19,22,-31,
+20,-45,55,-43,10,
+-16,47,-40,40,-20,
+-51,3,-17,-14,-15,
+-24,53,-20,-46,46,
+27,-68,32,3,-18,
+-5,9,-31,16,-9,
+-10,-1,-23,48,95,
+47,25,-41,-32,-3,
+15,-25,-55,36,41,
+-27,20,5,13,14,
+-22,5,2,-23,18,
+46,-15,17,-18,-34,
+-5,-8,27,-55,73,
+16,2,-1,-17,40,
+-78,33,0,2,19,
+4,53,-16,-15,-16,
+-28,-3,-13,49,8,
+-7,-29,27,-13,32,
+20,32,-61,16,14,
+41,44,40,24,20,
+7,4,48,-60,-77,
+17,-6,-48,65,-15,
+32,-30,-71,-10,-3,
+-6,10,-2,-7,-29,
+-56,67,-30,7,-5,
+86,-6,-10,0,5,
+-31,60,34,-38,-3,
+24,10,-2,30,23,
+24,-41,12,70,-43,
+15,-17,6,13,16,
+-13,8,30,-15,-8,
+5,23,-34,-98,-4,
+-13,13,-48,-31,70,
+12,31,25,24,-24,
+26,-7,33,-16,8,
+5,-11,-14,-8,-65,
+13,10,-2,-9,0,
+-3,-68,5,35,7,
+0,-31,-1,-17,-9,
+-9,16,-37,-18,-1,
+69,-48,-28,22,-21,
+-11,5,49,55,23,
+-86,-36,16,2,13,
+63,-51,30,-11,13,
+24,-18,-6,14,-19,
+1,41,9,-5,27,
+-36,-44,-34,-37,-21,
+-26,31,-39,15,43,
+5,-8,29,20,-8,
+-20,-52,-28,-1,13,
+26,-34,-10,-9,27,
+-8,8,27,-66,4,
+12,-22,49,10,-77,
+32,-18,3,-38,12,
+-3,-1,2,2,0};
diff --git a/pjmedia/src/pjmedia-codec/speex/exc_8_128_table.c b/pjmedia/src/pjmedia-codec/speex/exc_8_128_table.c
new file mode 100644
index 00000000..17ee64b9
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/exc_8_128_table.c
@@ -0,0 +1,162 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: exc_8_128_table.c
+   Codebook for excitation in narrowband CELP mode (7000 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+const signed char exc_8_128_table[1024] = {
+-14,9,13,-32,2,-10,31,-10,
+-8,-8,6,-4,-1,10,-64,23,
+6,20,13,6,8,-22,16,34,
+7,42,-49,-28,5,26,4,-15,
+41,34,41,32,33,24,23,14,
+8,40,34,4,-24,-41,-19,-15,
+13,-13,33,-54,24,27,-44,33,
+27,-15,-15,24,-19,14,-36,14,
+-9,24,-12,-4,37,-5,16,-34,
+5,10,33,-15,-54,-16,12,25,
+12,1,2,0,3,-1,-4,-4,
+11,2,-56,54,27,-20,13,-6,
+-46,-41,-33,-11,-5,7,12,14,
+-14,-5,8,20,6,3,4,-8,
+-5,-42,11,8,-14,25,-2,2,
+13,11,-22,39,-9,9,5,-45,
+-9,7,-9,12,-7,34,-17,-102,
+7,2,-42,18,35,-9,-34,11,
+-5,-2,3,22,46,-52,-25,-9,
+-94,8,11,-5,-5,-5,4,-7,
+-35,-7,54,5,-32,3,24,-9,
+-22,8,65,37,-1,-12,-23,-6,
+-9,-28,55,-33,14,-3,2,18,
+-60,41,-17,8,-16,17,-11,0,
+-11,29,-28,37,9,-53,33,-14,
+-9,7,-25,-7,-11,26,-32,-8,
+24,-21,22,-19,19,-10,29,-14,
+0,0,0,0,0,0,0,0,
+-5,-52,10,41,6,-30,-4,16,
+32,22,-27,-22,32,-3,-28,-3,
+3,-35,6,17,23,21,8,2,
+4,-45,-17,14,23,-4,-31,-11,
+-3,14,1,19,-11,2,61,-8,
+9,-12,7,-10,12,-3,-24,99,
+-48,23,50,-37,-5,-23,0,8,
+-14,35,-64,-5,46,-25,13,-1,
+-49,-19,-15,9,34,50,25,11,
+-6,-9,-16,-20,-32,-33,-32,-27,
+10,-8,12,-15,56,-14,-32,33,
+3,-9,1,65,-9,-9,-10,-2,
+-6,-23,9,17,3,-28,13,-32,
+4,-2,-10,4,-16,76,12,-52,
+6,13,33,-6,4,-14,-9,-3,
+1,-15,-16,28,1,-15,11,16,
+9,4,-21,-37,-40,-6,22,12,
+-15,-23,-14,-17,-16,-9,-10,-9,
+13,-39,41,5,-9,16,-38,25,
+46,-47,4,49,-14,17,-2,6,
+18,5,-6,-33,-22,44,50,-2,
+1,3,-6,7,7,-3,-21,38,
+-18,34,-14,-41,60,-13,6,16,
+-24,35,19,-13,-36,24,3,-17,
+-14,-10,36,44,-44,-29,-3,3,
+-54,-8,12,55,26,4,-2,-5,
+2,-11,22,-23,2,22,1,-25,
+-39,66,-49,21,-8,-2,10,-14,
+-60,25,6,10,27,-25,16,5,
+-2,-9,26,-13,-20,58,-2,7,
+52,-9,2,5,-4,-15,23,-1,
+-38,23,8,27,-6,0,-27,-7,
+39,-10,-14,26,11,-45,-12,9,
+-5,34,4,-35,10,43,-22,-11,
+56,-7,20,1,10,1,-26,9,
+94,11,-27,-14,-13,1,-11,0,
+14,-5,-6,-10,-4,-15,-8,-41,
+21,-5,1,-28,-8,22,-9,33,
+-23,-4,-4,-12,39,4,-7,3,
+-60,80,8,-17,2,-6,12,-5,
+1,9,15,27,31,30,27,23,
+61,47,26,10,-5,-8,-12,-13,
+5,-18,25,-15,-4,-15,-11,12,
+-2,-2,-16,-2,-6,24,12,11,
+-4,9,1,-9,14,-45,57,12,
+20,-35,26,11,-64,32,-10,-10,
+42,-4,-9,-16,32,24,7,10,
+52,-11,-57,29,0,8,0,-6,
+17,-17,-56,-40,7,20,18,12,
+-6,16,5,7,-1,9,1,10,
+29,12,16,13,-2,23,7,9,
+-3,-4,-5,18,-64,13,55,-25,
+9,-9,24,14,-25,15,-11,-40,
+-30,37,1,-19,22,-5,-31,13,
+-2,0,7,-4,16,-67,12,66,
+-36,24,-8,18,-15,-23,19,0,
+-45,-7,4,3,-13,13,35,5,
+13,33,10,27,23,0,-7,-11,
+43,-74,36,-12,2,5,-8,6,
+-33,11,-16,-14,-5,-7,-3,17,
+-34,27,-16,11,-9,15,33,-31,
+8,-16,7,-6,-7,63,-55,-17,
+11,-1,20,-46,34,-30,6,9,
+19,28,-9,5,-24,-8,-23,-2,
+31,-19,-16,-5,-15,-18,0,26,
+18,37,-5,-15,-2,17,5,-27,
+21,-33,44,12,-27,-9,17,11,
+25,-21,-31,-7,13,33,-8,-25,
+-7,7,-10,4,-6,-9,48,-82,
+-23,-8,6,11,-23,3,-3,49,
+-29,25,31,4,14,16,9,-4,
+-18,10,-26,3,5,-44,-9,9,
+-47,-55,15,9,28,1,4,-3,
+46,6,-6,-38,-29,-31,-15,-6,
+3,0,14,-6,8,-54,-50,33,
+-5,1,-14,33,-48,26,-4,-5,
+-3,-5,-3,-5,-28,-22,77,55,
+-1,2,10,10,-9,-14,-66,-49,
+11,-36,-6,-20,10,-10,16,12,
+4,-1,-16,45,-44,-50,31,-2,
+25,42,23,-32,-22,0,11,20,
+-40,-35,-40,-36,-32,-26,-21,-13,
+52,-22,6,-24,-20,17,-5,-8,
+36,-25,-11,21,-26,6,34,-8,
+7,20,-3,5,-25,-8,18,-5,
+-9,-4,1,-9,20,20,39,48,
+-24,9,5,-65,22,29,4,3,
+-43,-11,32,-6,9,19,-27,-10,
+-47,-14,24,10,-7,-36,-7,-1,
+-4,-5,-5,16,53,25,-26,-29,
+-4,-12,45,-58,-34,33,-5,2,
+-1,27,-48,31,-15,22,-5,4,
+7,7,-25,-3,11,-22,16,-12,
+8,-3,7,-11,45,14,-73,-19,
+56,-46,24,-20,28,-12,-2,-1,
+-36,-3,-33,19,-6,7,2,-15,
+5,-31,-45,8,35,13,20,0,
+-9,48,-13,-43,-3,-13,2,-5,
+72,-68,-27,2,1,-2,-7,5,
+36,33,-40,-12,-4,-5,23,19};
diff --git a/pjmedia/src/pjmedia-codec/speex/filters.c b/pjmedia/src/pjmedia-codec/speex/filters.c
new file mode 100644
index 00000000..abc8d9cf
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/filters.c
@@ -0,0 +1,605 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: filters.c
+   Various analysis/synthesis filters
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "filters.h"
+#include "stack_alloc.h"
+#include "misc.h"
+#include "math_approx.h"
+#include "ltp.h"
+#include <math.h>
+
+#ifdef _USE_SSE
+#include "filters_sse.h"
+#elif defined (ARM4_ASM) || defined(ARM5E_ASM)
+#include "filters_arm4.h"
+#elif defined (BFIN_ASM)
+#include "filters_bfin.h"
+#endif
+
+
+
+void bw_lpc(spx_word16_t gamma, const spx_coef_t *lpc_in, spx_coef_t *lpc_out, int order)
+{
+   int i;
+   spx_word16_t tmp=gamma;
+   for (i=0;i<order;i++)
+   {
+      lpc_out[i] = MULT16_16_P15(tmp,lpc_in[i]);
+      tmp = MULT16_16_P15(tmp, gamma);
+   }
+}
+
+
+#ifdef FIXED_POINT
+
+/* FIXME: These functions are ugly and probably introduce too much error */
+void signal_mul(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+   {
+      y[i] = SHL32(MULT16_32_Q14(EXTRACT16(SHR32(x[i],7)),scale),7);
+   }
+}
+
+void signal_div(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
+{
+   int i;
+   if (scale > SHL32(EXTEND32(SIG_SCALING), 8))
+   {
+      spx_word16_t scale_1;
+      scale = PSHR32(scale, SIG_SHIFT);
+      scale_1 = EXTRACT16(DIV32_16(SHL32(EXTEND32(SIG_SCALING),7),scale));
+      for (i=0;i<len;i++)
+      {
+         y[i] = SHR32(MULT16_16(scale_1, EXTRACT16(SHR32(x[i],SIG_SHIFT))),7);
+      }
+   } else {
+      spx_word16_t scale_1;
+      scale = PSHR32(scale, SIG_SHIFT-5);
+      scale_1 = DIV32_16(SHL32(EXTEND32(SIG_SCALING),3),scale);
+      for (i=0;i<len;i++)
+      {
+         y[i] = MULT16_16(scale_1, EXTRACT16(SHR32(x[i],SIG_SHIFT-2)));
+      }
+   }
+}
+
+#else
+
+void signal_mul(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+      y[i] = scale*x[i];
+}
+
+void signal_div(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
+{
+   int i;
+   float scale_1 = 1/scale;
+   for (i=0;i<len;i++)
+      y[i] = scale_1*x[i];
+}
+#endif
+
+
+
+#ifdef FIXED_POINT
+
+
+
+spx_word16_t compute_rms(const spx_sig_t *x, int len)
+{
+   int i;
+   spx_word32_t sum=0;
+   spx_sig_t max_val=1;
+   int sig_shift;
+
+   for (i=0;i<len;i++)
+   {
+      spx_sig_t tmp = x[i];
+      if (tmp<0)
+         tmp = -tmp;
+      if (tmp > max_val)
+         max_val = tmp;
+   }
+
+   sig_shift=0;
+   while (max_val>16383)
+   {
+      sig_shift++;
+      max_val >>= 1;
+   }
+
+   for (i=0;i<len;i+=4)
+   {
+      spx_word32_t sum2=0;
+      spx_word16_t tmp;
+      tmp = EXTRACT16(SHR32(x[i],sig_shift));
+      sum2 = MAC16_16(sum2,tmp,tmp);
+      tmp = EXTRACT16(SHR32(x[i+1],sig_shift));
+      sum2 = MAC16_16(sum2,tmp,tmp);
+      tmp = EXTRACT16(SHR32(x[i+2],sig_shift));
+      sum2 = MAC16_16(sum2,tmp,tmp);
+      tmp = EXTRACT16(SHR32(x[i+3],sig_shift));
+      sum2 = MAC16_16(sum2,tmp,tmp);
+      sum = ADD32(sum,SHR32(sum2,6));
+   }
+   
+   return EXTRACT16(SHR32(SHL32(EXTEND32(spx_sqrt(1+DIV32(sum,len))),(sig_shift+3)),SIG_SHIFT));
+}
+
+
+#ifndef OVERRIDE_NORMALIZE16
+int normalize16(const spx_sig_t *x, spx_word16_t *y, spx_sig_t max_scale, int len)
+{
+   int i;
+   spx_sig_t max_val=1;
+   int sig_shift;
+   
+   for (i=0;i<len;i++)
+   {
+      spx_sig_t tmp = x[i];
+      if (tmp<0)
+         tmp = NEG32(tmp);
+      if (tmp >= max_val)
+         max_val = tmp;
+   }
+
+   sig_shift=0;
+   while (max_val>max_scale)
+   {
+      sig_shift++;
+      max_val >>= 1;
+   }
+
+   for (i=0;i<len;i++)
+      y[i] = EXTRACT16(SHR32(x[i], sig_shift));
+   
+   return sig_shift;
+}
+#endif
+
+#else
+
+spx_word16_t compute_rms(const spx_sig_t *x, int len)
+{
+   int i;
+   float sum=0;
+   for (i=0;i<len;i++)
+   {
+      sum += x[i]*x[i];
+   }
+   return sqrt(.1+sum/len);
+}
+#endif
+
+
+
+#ifndef OVERRIDE_FILTER_MEM2
+#ifdef PRECISION16
+void filter_mem2(const spx_sig_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word16_t xi,yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      xi= EXTRACT16(PSHR32(SATURATE(x[i],536870911),SIG_SHIFT));
+      yi = EXTRACT16(PSHR32(SATURATE(ADD32(x[i], SHL32(mem[0],1)),536870911),SIG_SHIFT));
+      nyi = NEG16(yi);
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_16(MAC16_16(mem[j+1], num[j],xi), den[j],nyi);
+      }
+      mem[ord-1] = ADD32(MULT16_16(num[ord-1],xi), MULT16_16(den[ord-1],nyi));
+      y[i] = SHL32(EXTEND32(yi),SIG_SHIFT);
+   }
+}
+#else
+void filter_mem2(const spx_sig_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_sig_t xi,yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      xi=SATURATE(x[i],805306368);
+      yi = SATURATE(ADD32(xi, SHL32(mem[0],2)),805306368);
+      nyi = NEG32(yi);
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_32_Q15(MAC16_32_Q15(mem[j+1], num[j],xi), den[j],nyi);
+      }
+      mem[ord-1] = SUB32(MULT16_32_Q15(num[ord-1],xi), MULT16_32_Q15(den[ord-1],yi));
+      y[i] = yi;
+   }
+}
+#endif
+#endif
+
+#ifndef OVERRIDE_IIR_MEM2
+#ifdef PRECISION16
+void iir_mem2(const spx_sig_t *x, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word16_t yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      yi = EXTRACT16(PSHR32(SATURATE(x[i] + SHL32(mem[0],1),536870911),SIG_SHIFT));
+      nyi = NEG16(yi);
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_16(mem[j+1],den[j],nyi);
+      }
+      mem[ord-1] = MULT16_16(den[ord-1],nyi);
+      y[i] = SHL32(EXTEND32(yi),SIG_SHIFT);
+   }
+}
+#else
+void iir_mem2(const spx_sig_t *x, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word32_t xi,yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      xi=SATURATE(x[i],805306368);
+      yi = SATURATE(xi + SHL32(mem[0],2),805306368);
+      nyi = NEG32(yi);
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_32_Q15(mem[j+1],den[j],nyi);
+      }
+      mem[ord-1] = MULT16_32_Q15(den[ord-1],nyi);
+      y[i] = yi;
+   }
+}
+#endif
+#endif
+
+#ifndef OVERRIDE_FIR_MEM2
+#ifdef PRECISION16
+void fir_mem2(const spx_sig_t *x, const spx_coef_t *num, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word16_t xi,yi;
+
+   for (i=0;i<N;i++)
+   {
+      xi= EXTRACT16(PSHR32(SATURATE(x[i],536870911),SIG_SHIFT));
+      yi = EXTRACT16(PSHR32(SATURATE(x[i] + SHL32(mem[0],1),536870911),SIG_SHIFT));
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_16(mem[j+1], num[j],xi);
+      }
+      mem[ord-1] = MULT16_16(num[ord-1],xi);
+      y[i] = SHL32(EXTEND32(yi),SIG_SHIFT);
+   }
+}
+#else
+void fir_mem2(const spx_sig_t *x, const spx_coef_t *num, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word32_t xi,yi;
+
+   for (i=0;i<N;i++)
+   {
+      xi=SATURATE(x[i],805306368);
+      yi = xi + SHL32(mem[0],2);
+      for (j=0;j<ord-1;j++)
+      {
+         mem[j] = MAC16_32_Q15(mem[j+1], num[j],xi);
+      }
+      mem[ord-1] = MULT16_32_Q15(num[ord-1],xi);
+      y[i] = SATURATE(yi,805306368);
+   }
+}
+#endif
+#endif
+
+
+
+
+
+
+
+
+void syn_percep_zero(const spx_sig_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack)
+{
+   int i;
+   VARDECL(spx_mem_t *mem);
+   ALLOC(mem, ord, spx_mem_t);
+   for (i=0;i<ord;i++)
+     mem[i]=0;
+   iir_mem2(xx, ak, y, N, ord, mem);
+   for (i=0;i<ord;i++)
+      mem[i]=0;
+   filter_mem2(y, awk1, awk2, y, N, ord, mem);
+}
+
+void residue_percep_zero(const spx_sig_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack)
+{
+   int i;
+   VARDECL(spx_mem_t *mem);
+   ALLOC(mem, ord, spx_mem_t);
+   for (i=0;i<ord;i++)
+      mem[i]=0;
+   filter_mem2(xx, ak, awk1, y, N, ord, mem);
+   for (i=0;i<ord;i++)
+     mem[i]=0;
+   fir_mem2(y, awk2, y, N, ord, mem);
+}
+
+#ifndef OVERRIDE_COMPUTE_IMPULSE_RESPONSE
+void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack)
+{
+   int i,j;
+   spx_word16_t y1, ny1i, ny2i;
+   VARDECL(spx_mem_t *mem1);
+   VARDECL(spx_mem_t *mem2);
+   ALLOC(mem1, ord, spx_mem_t);
+   ALLOC(mem2, ord, spx_mem_t);
+   
+   y[0] = LPC_SCALING;
+   for (i=0;i<ord;i++)
+      y[i+1] = awk1[i];
+   i++;
+   for (;i<N;i++)
+      y[i] = VERY_SMALL;
+   
+   for (i=0;i<ord;i++)
+      mem1[i] = mem2[i] = 0;
+   for (i=0;i<N;i++)
+   {
+      y1 = ADD16(y[i], EXTRACT16(PSHR32(mem1[0],LPC_SHIFT)));
+      ny1i = NEG16(y1);
+      y[i] = ADD16(SHL16(y1,1), EXTRACT16(PSHR32(mem2[0],LPC_SHIFT)));
+      ny2i = NEG16(y[i]);
+      for (j=0;j<ord-1;j++)
+      {
+         mem1[j] = MAC16_16(mem1[j+1], awk2[j],ny1i);
+         mem2[j] = MAC16_16(mem2[j+1], ak[j],ny2i);
+      }
+      mem1[ord-1] = MULT16_16(awk2[ord-1],ny1i);
+      mem2[ord-1] = MULT16_16(ak[ord-1],ny2i);
+   }
+}
+#endif
+
+void qmf_decomp(const spx_word16_t *xx, const spx_word16_t *aa, spx_sig_t *y1, spx_sig_t *y2, int N, int M, spx_word16_t *mem, char *stack)
+{
+   int i,j,k,M2;
+   VARDECL(spx_word16_t *a);
+   VARDECL(spx_word16_t *x);
+   spx_word16_t *x2;
+   
+   ALLOC(a, M, spx_word16_t);
+   ALLOC(x, N+M-1, spx_word16_t);
+   x2=x+M-1;
+   M2=M>>1;
+   for (i=0;i<M;i++)
+      a[M-i-1]= aa[i];
+
+   for (i=0;i<M-1;i++)
+      x[i]=mem[M-i-2];
+   for (i=0;i<N;i++)
+      x[i+M-1]=SATURATE(PSHR(xx[i],1),16383);
+   for (i=0,k=0;i<N;i+=2,k++)
+   {
+      y1[k]=0;
+      y2[k]=0;
+      for (j=0;j<M2;j++)
+      {
+         y1[k]=ADD32(y1[k],SHR(MULT16_16(a[j],ADD16(x[i+j],x2[i-j])),1));
+         y2[k]=SUB32(y2[k],SHR(MULT16_16(a[j],SUB16(x[i+j],x2[i-j])),1));
+         j++;
+         y1[k]=ADD32(y1[k],SHR(MULT16_16(a[j],ADD16(x[i+j],x2[i-j])),1));
+         y2[k]=ADD32(y2[k],SHR(MULT16_16(a[j],SUB16(x[i+j],x2[i-j])),1));
+      }
+   }
+   for (i=0;i<M-1;i++)
+     mem[i]=SATURATE(PSHR(xx[N-i-1],1),16383);
+}
+
+
+/* By segher */
+void fir_mem_up(const spx_sig_t *x, const spx_word16_t *a, spx_sig_t *y, int N, int M, spx_word32_t *mem, char *stack)
+   /* assumptions:
+      all odd x[i] are zero -- well, actually they are left out of the array now
+      N and M are multiples of 4 */
+{
+   int i, j;
+   VARDECL(spx_word16_t *xx);
+   
+   ALLOC(xx, M+N-1, spx_word16_t);
+
+   for (i = 0; i < N/2; i++)
+      xx[2*i] = SHR(x[N/2-1-i],SIG_SHIFT+1);
+   for (i = 0; i < M - 1; i += 2)
+      xx[N+i] = mem[i+1];
+
+   for (i = 0; i < N; i += 4) {
+      spx_sig_t y0, y1, y2, y3;
+      spx_word16_t x0;
+
+      y0 = y1 = y2 = y3 = 0;
+      x0 = xx[N-4-i];
+
+      for (j = 0; j < M; j += 4) {
+         spx_word16_t x1;
+         spx_word16_t a0, a1;
+
+         a0 = a[j];
+         a1 = a[j+1];
+         x1 = xx[N-2+j-i];
+
+         y0 = ADD32(y0,SHR(MULT16_16(a0, x1),1));
+         y1 = ADD32(y1,SHR(MULT16_16(a1, x1),1));
+         y2 = ADD32(y2,SHR(MULT16_16(a0, x0),1));
+         y3 = ADD32(y3,SHR(MULT16_16(a1, x0),1));
+
+         a0 = a[j+2];
+         a1 = a[j+3];
+         x0 = xx[N+j-i];
+
+         y0 = ADD32(y0,SHR(MULT16_16(a0, x0),1));
+         y1 = ADD32(y1,SHR(MULT16_16(a1, x0),1));
+         y2 = ADD32(y2,SHR(MULT16_16(a0, x1),1));
+         y3 = ADD32(y3,SHR(MULT16_16(a1, x1),1));
+      }
+      y[i] = y0;
+      y[i+1] = y1;
+      y[i+2] = y2;
+      y[i+3] = y3;
+   }
+
+   for (i = 0; i < M - 1; i += 2)
+      mem[i+1] = xx[i];
+}
+
+void comb_filter_mem_init (CombFilterMem *mem)
+{
+   mem->last_pitch=0;
+   mem->last_pitch_gain[0]=mem->last_pitch_gain[1]=mem->last_pitch_gain[2]=0;
+   mem->smooth_gain=1;
+}
+
+#ifdef FIXED_POINT
+#define COMB_STEP 32767
+#else
+#define COMB_STEP 1.0
+#endif
+
+void comb_filter(
+spx_sig_t *exc,          /*decoded excitation*/
+spx_sig_t *new_exc,      /*enhanced excitation*/
+spx_coef_t *ak,           /*LPC filter coefs*/
+int p,               /*LPC order*/
+int nsf,             /*sub-frame size*/
+int pitch,           /*pitch period*/
+spx_word16_t *pitch_gain,   /*pitch gain (3-tap)*/
+spx_word16_t  comb_gain,    /*gain of comb filter*/
+CombFilterMem *mem
+)
+{
+   int i;
+   spx_word16_t exc_energy=0, new_exc_energy=0;
+   spx_word16_t gain;
+   spx_word16_t step;
+   spx_word16_t fact;
+
+   /*Compute excitation amplitude prior to enhancement*/
+   exc_energy = compute_rms(exc, nsf);
+   /*for (i=0;i<nsf;i++)
+     exc_energy+=((float)exc[i])*exc[i];*/
+
+   /*Some gain adjustment if pitch is too high or if unvoiced*/
+#ifdef FIXED_POINT
+   {
+      spx_word16_t g = gain_3tap_to_1tap(pitch_gain)+gain_3tap_to_1tap(mem->last_pitch_gain);
+      if (g > 166)
+         comb_gain = MULT16_16_Q15(DIV32_16(SHL32(EXTEND32(165),15),g), comb_gain);
+      if (g < 64)
+         comb_gain = MULT16_16_Q15(SHL16(g, 9), comb_gain);
+   }
+#else
+   {
+      float g=0;
+      g = GAIN_SCALING_1*.5*(gain_3tap_to_1tap(pitch_gain)+gain_3tap_to_1tap(mem->last_pitch_gain));
+      if (g>1.3)
+         comb_gain*=1.3/g;
+      if (g<.5)
+         comb_gain*=2.*g;
+   }
+#endif
+   step = DIV32(COMB_STEP, nsf);
+   fact=0;
+
+   /*Apply pitch comb-filter (filter out noise between pitch harmonics)*/
+   for (i=0;i<nsf;i++)
+   {
+      spx_word32_t exc1, exc2;
+
+      fact = ADD16(fact,step);
+      
+      exc1 = SHL32(MULT16_32_Q15(SHL16(pitch_gain[0],7),exc[i-pitch+1]) +
+                 MULT16_32_Q15(SHL16(pitch_gain[1],7),exc[i-pitch]) +
+                 MULT16_32_Q15(SHL16(pitch_gain[2],7),exc[i-pitch-1]) , 2);
+      exc2 = SHL32(MULT16_32_Q15(SHL16(mem->last_pitch_gain[0],7),exc[i-mem->last_pitch+1]) +
+                 MULT16_32_Q15(SHL16(mem->last_pitch_gain[1],7),exc[i-mem->last_pitch]) +
+                 MULT16_32_Q15(SHL16(mem->last_pitch_gain[2],7),exc[i-mem->last_pitch-1]),2);
+
+      new_exc[i] = exc[i] + MULT16_32_Q15(comb_gain, ADD32(MULT16_32_Q15(fact,exc1), MULT16_32_Q15(SUB16(COMB_STEP,fact), exc2)));
+   }
+
+   mem->last_pitch_gain[0] = pitch_gain[0];
+   mem->last_pitch_gain[1] = pitch_gain[1];
+   mem->last_pitch_gain[2] = pitch_gain[2];
+   mem->last_pitch = pitch;
+
+   /*Amplitude after enhancement*/
+   new_exc_energy = compute_rms(new_exc, nsf);
+
+   if (exc_energy > new_exc_energy)
+      exc_energy = new_exc_energy;
+   
+   gain = DIV32_16(SHL32(EXTEND32(exc_energy),15),ADD16(1,new_exc_energy));
+
+#ifdef FIXED_POINT
+   if (gain < 16384)
+      gain = 16384;
+#else
+   if (gain < .5)
+      gain=.5;
+#endif
+
+#ifdef FIXED_POINT
+   for (i=0;i<nsf;i++)
+   {
+      mem->smooth_gain = ADD16(MULT16_16_Q15(31457,mem->smooth_gain), MULT16_16_Q15(1311,gain));
+      new_exc[i] = MULT16_32_Q15(mem->smooth_gain, new_exc[i]);
+   }
+#else
+   for (i=0;i<nsf;i++)
+   {
+      mem->smooth_gain = .96*mem->smooth_gain + .04*gain;
+      new_exc[i] *= mem->smooth_gain;
+   }
+#endif
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/filters.h b/pjmedia/src/pjmedia-codec/speex/filters.h
new file mode 100644
index 00000000..c86d189c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/filters.h
@@ -0,0 +1,92 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file filters.h
+   @brief Various analysis/synthesis filters
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FILTERS_H
+#define FILTERS_H
+
+#include "misc.h"
+
+spx_word16_t compute_rms(const spx_sig_t *x, int len);
+void signal_mul(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len);
+void signal_div(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len);
+
+#ifdef FIXED_POINT
+
+int normalize16(const spx_sig_t *x, spx_word16_t *y, spx_sig_t max_scale, int len);
+
+#endif
+
+/** Combined filter memory. */
+typedef struct {
+   int   last_pitch;
+   spx_word16_t last_pitch_gain[3];
+   spx_word16_t smooth_gain;
+} CombFilterMem;
+
+
+void qmf_decomp(const spx_word16_t *xx, const spx_word16_t *aa, spx_sig_t *, spx_sig_t *y2, int N, int M, spx_word16_t *mem, char *stack);
+void fir_mem_up(const spx_sig_t *x, const spx_word16_t *a, spx_sig_t *y, int N, int M, spx_word32_t *mem, char *stack);
+
+
+void filter_mem2(const spx_sig_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem);
+void fir_mem2(const spx_sig_t *x, const spx_coef_t *num, spx_sig_t *y, int N, int ord, spx_mem_t *mem);
+void iir_mem2(const spx_sig_t *x, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem);
+
+/* Apply bandwidth expansion on LPC coef */
+void bw_lpc(spx_word16_t , const spx_coef_t *lpc_in, spx_coef_t *lpc_out, int order);
+
+
+
+void syn_percep_zero(const spx_sig_t *x, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack);
+
+void residue_percep_zero(const spx_sig_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack);
+
+void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack);
+
+void comb_filter_mem_init (CombFilterMem *mem);
+
+void comb_filter(
+spx_sig_t *exc,          /*decoded excitation*/
+spx_sig_t *new_exc,      /*enhanced excitation*/
+spx_coef_t *ak,           /*LPC filter coefs*/
+int p,               /*LPC order*/
+int nsf,             /*sub-frame size*/
+int pitch,           /*pitch period*/
+spx_word16_t *pitch_gain,   /*pitch gain (3-tap)*/
+spx_word16_t  comb_gain,    /*gain of comb filter*/
+CombFilterMem *mem
+);
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/filters_arm4.h b/pjmedia/src/pjmedia-codec/speex/filters_arm4.h
new file mode 100644
index 00000000..b2503649
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/filters_arm4.h
@@ -0,0 +1,379 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file filters_arm4.h
+   @brief Various analysis/synthesis filters (ARM4 version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_NORMALIZE16
+int normalize16(const spx_sig_t *x, spx_word16_t *y, int max_scale, int len)
+{
+   int i;
+   spx_sig_t max_val=1;
+   int sig_shift;
+   int dead1, dead2, dead3, dead4, dead5, dead6;
+
+   __asm__ __volatile__ (
+         "\tmov %1, #1 \n"
+         "\tmov %3, #0 \n"
+
+         ".normalize16loop1%=: \n"
+
+         "\tldr %4, [%0], #4 \n"
+         "\tcmps %4, %1 \n"
+         "\tmovgt %1, %4 \n"
+         "\tcmps %4, %3 \n"
+         "\tmovlt %3, %4 \n"
+
+         "\tsubs %2, %2, #1 \n"
+         "\tbne .normalize16loop1%=\n"
+
+         "\trsb %3, %3, #0 \n"
+         "\tcmp %1, %3 \n"
+         "\tmovlt %1, %3 \n"
+   : "=r" (dead1), "=r" (max_val), "=r" (dead3), "=r" (dead4),
+   "=r" (dead5), "=r" (dead6)
+   : "0" (x), "2" (len)
+   : "cc");
+
+   sig_shift=0;
+   while (max_val>max_scale)
+   {
+      sig_shift++;
+      max_val >>= 1;
+   }
+   
+   __asm__ __volatile__ (
+         ".normalize16loop%=: \n"
+
+         "\tldr %4, [%0], #4 \n"
+         "\tldr %5, [%0], #4 \n"
+         "\tmov %4, %4, asr %3 \n"
+         "\tstrh %4, [%1], #2 \n"
+         "\tldr %4, [%0], #4 \n"
+         "\tmov %5, %5, asr %3 \n"
+         "\tstrh %5, [%1], #2 \n"
+         "\tldr %5, [%0], #4 \n"
+         "\tmov %4, %4, asr %3 \n"
+         "\tstrh %4, [%1], #2 \n"
+         "\tsubs %2, %2, #1 \n"
+         "\tmov %5, %5, asr %3 \n"
+         "\tstrh %5, [%1], #2 \n"
+
+         "\tbge .normalize16loop%=\n"
+   : "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
+   "=r" (dead5), "=r" (dead6)
+   : "0" (x), "1" (y), "2" (len>>2), "3" (sig_shift)
+   : "cc", "memory");
+   return sig_shift;
+}
+
+#define OVERRIDE_FILTER_MEM2
+void filter_mem2(const spx_sig_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_sig_t xi,yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      int deadm, deadn, deadd, deadidx, x1, y1, dead1, dead2, dead3, dead4, dead5, dead6;
+      xi=SATURATE(x[i],805306368);
+      yi = SATURATE(ADD32(xi, SHL(mem[0],2)),805306368);
+      nyi = -yi;
+      y[i] = yi;
+      __asm__ __volatile__ (
+            "\tldrsh %6, [%1], #2\n"
+            "\tsmull %8, %9, %4, %6\n"
+#ifdef SHORTCUTS
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+
+#else
+            ".filterloop%=: \n"
+            "\tldrsh %6, [%2], #2\n"
+            "\tldr %10, [%0, #4]\n"
+            "\tmov %8, %8, lsr #15\n"
+            "\tsmull %7, %11, %5, %6\n"
+            "\tadd %8, %8, %9, lsl #17\n"
+            "\tldrsh %6, [%1], #2\n"
+            "\tadd %10, %10, %8\n"
+            "\tsmull %8, %9, %4, %6\n"
+            "\tadd %10, %10, %7, lsr #15\n"
+            "\tsubs %3, %3, #1\n"
+            "\tadd %10, %10, %11, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+            "\t bne .filterloop%=\n"
+#endif
+            "\tmov %8, %8, lsr #15\n"
+            "\tadd %10, %8, %9, lsl #17\n"
+            "\tldrsh %6, [%2], #2\n"
+            "\tsmull %8, %9, %5, %6\n"
+            "\tadd %10, %10, %8, lsr #15\n"
+            "\tadd %10, %10, %9, lsl #17\n"
+            "\tstr %10, [%0], #4 \n"
+
+         : "=r" (deadm), "=r" (deadn), "=r" (deadd), "=r" (deadidx),
+      "=r" (xi), "=r" (nyi), "=r" (dead1), "=r" (dead2),
+      "=r" (dead3), "=r" (dead4), "=r" (dead5), "=r" (dead6)
+         : "0" (mem), "1" (num), "2" (den), "3" (ord-1), "4" (xi), "5" (nyi)
+         : "cc", "memory");
+   
+   }
+}
+
+#define OVERRIDE_IIR_MEM2
+void iir_mem2(const spx_sig_t *x, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_sig_t xi,yi,nyi;
+
+   for (i=0;i<N;i++)
+   {
+      int deadm, deadd, deadidx, dead1, dead2, dead3, dead4, dead5, dead6;
+      xi=SATURATE(x[i],805306368);
+      yi = SATURATE(ADD32(xi, SHL(mem[0],2)),805306368);
+      nyi = -yi;
+      y[i] = yi;
+      __asm__ __volatile__ (
+            "\tldrsh %4, [%1], #2\n"
+            "\tsmull %5, %6, %3, %4\n"
+
+#ifdef SHORTCUTS
+                        
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %7, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+
+                 
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %9, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %9, %9, %8\n"
+            "\tstr %9, [%0], #4 \n"
+
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %7, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+
+            
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %9, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %9, %9, %8\n"
+            "\tstr %9, [%0], #4 \n"
+
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %7, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+
+            
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %9, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %9, %9, %8\n"
+            "\tstr %9, [%0], #4 \n"
+
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %7, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+
+            
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %9, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %9, %9, %8\n"
+            "\tstr %9, [%0], #4 \n"
+
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tldr %7, [%0, #4]\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+
+            
+            
+#else
+            ".iirloop%=: \n"
+            "\tldr %7, [%0, #4]\n"
+
+            "\tldrsh %4, [%1], #2\n"
+            "\tmov %5, %5, lsr #15\n"
+            "\tadd %8, %5, %6, lsl #17\n"
+            "\tsmull %5, %6, %3, %4\n"
+            "\tadd %7, %7, %8\n"
+            "\tstr %7, [%0], #4 \n"
+            "\tsubs %2, %2, #1\n"
+            "\t bne .iirloop%=\n"
+            
+#endif
+            "\tmov %5, %5, lsr #15\n"
+            "\tadd %7, %5, %6, lsl #17\n"
+            "\tstr %7, [%0], #4 \n"
+
+         : "=r" (deadm), "=r" (deadd), "=r" (deadidx), "=r" (nyi),
+      "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
+      "=r" (dead5), "=r" (dead6)
+         : "0" (mem), "1" (den), "2" (ord-1), "3" (nyi)
+         : "cc", "memory");
+   
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/filters_bfin.h b/pjmedia/src/pjmedia-codec/speex/filters_bfin.h
new file mode 100644
index 00000000..9f7ea6a9
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/filters_bfin.h
@@ -0,0 +1,510 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file filters_bfin.h
+   @brief Various analysis/synthesis filters (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+
+#define OVERRIDE_NORMALIZE16
+int normalize16(const spx_sig_t *x, spx_word16_t *y, spx_sig_t max_scale, int len)
+{
+   spx_sig_t max_val=1;
+   int sig_shift;
+
+   __asm__ 
+   (
+   "%0 = 0;\n\t"
+   "I0 = %1;\n\t"
+   "L0 = 0;\n\t"
+   "R1 = [I0++];\n\t"
+   "LOOP norm_max%= LC0 = %2;\n\t"
+   "LOOP_BEGIN norm_max%=;\n\t"
+      "R2 = ABS R1 || R1 = [I0++];\n\t"
+      "%0 = MAX(%0, R2);\n\t"
+   "LOOP_END norm_max%=;\n\t"
+   : "=&d" (max_val)
+   : "a" (x), "a" (len)
+   : "R1", "R2"
+   );
+
+   sig_shift=0;
+   while (max_val>max_scale)
+   {
+      sig_shift++;
+      max_val >>= 1;
+   }
+
+   __asm__ __volatile__ 
+   (
+   "I0 = %0;\n\t"
+   "L0 = 0;\n\t"
+   "I1 = %1;\n\t"
+   "L1 = 0;\n\t"
+   "R0 = [I0++];\n\t"
+   "LOOP norm_shift%= LC0 = %3 >> 1;\n\t"
+   "LOOP_BEGIN norm_shift%=;\n\t"
+      "R1 = ASHIFT R0 by %2.L || R2 = [I0++];\n\t"
+      "R3 = ASHIFT R2 by %2.L || R0 = [I0++];\n\t"
+      "R3 = PACK(R3.L, R1.L);\n\t"
+      "[I1++] = R3;\n\t"
+   "LOOP_END norm_shift%=;\n\t"
+   : : "a" (x), "a" (y), "d" (-sig_shift), "a" (len)
+   : "I0", "L0", "I1", "L1", "R0", "R1", "R2", "R3", "memory"
+   );
+   return sig_shift;
+}
+
+#define OVERRIDE_FILTER_MEM2
+void filter_mem2(const spx_sig_t *_x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *_y, int N, int ord, spx_mem_t *mem)
+{
+   spx_word32_t xy2[N+1];
+   spx_word32_t *xy = xy2+1;
+   spx_word32_t numden_a[2*ord+2];
+   spx_word16_t *numden = (spx_word16_t*) numden_a;
+   int i;
+   for (i=0;i<ord;i++)
+   {
+      numden[2*i] = num[i];
+      numden[2*i+1] = den[i];
+   }
+   __asm__ __volatile__
+   (
+   /* Register setup */
+   "R0 = %5;\n\t"      /*ord */
+   
+   "P0 = %3;\n\t"
+   "I0 = P0;\n\t"
+   "B0 = P0;\n\t"
+   "L0 = 0;\n\t"
+      
+   "P2 = %0;\n\t"
+   "I2 = P2;\n\t"
+   "L2 = 0;\n\t"
+   
+   "P4 = %6;\n\t"
+   "P0 = %1;\n\t"
+   "P1 = %2;\n\t"
+   
+   /* First sample */
+   "R1 = [P4++];\n\t"
+   "R1 <<= 1;\n\t"
+   "R2 = [P0++];\n\t"
+   "R1 = R1 + R2;\n\t"
+   "[P1++] = R1;\n\t"
+   "R1 <<= 2;\n\t"
+   "R2 <<= 2;\n\t"
+   "R2 = PACK(R1.H, R2.H);\n\t"
+   "[P2] = R2;\n\t"
+               
+   /* Samples 1 to ord-1 (using memory) */
+   "R0 += -1;\n\t"
+   "R3 = 0;\n\t"
+   "LC0 = R0;\n\t"
+   "LOOP filter_start%= LC0;\n\t"
+   "LOOP_BEGIN filter_start%=;\n\t"
+      "R3 += 1;\n\t"
+      "LC1 = R3;\n\t"
+      
+      "R1 = [P4++];\n\t"
+      "A1 = R1;\n\t"
+      "A0 = 0;\n\t"
+      "I0 = B0;\n\t"
+      "I2 = P2;\n\t"
+      "P2 += 4;\n\t"
+      "R4 = [I0++] || R5 = [I2--];\n\t"
+      "LOOP filter_start_inner%= LC1;\n\t"
+      "LOOP_BEGIN filter_start_inner%=;\n\t"
+         "A1 -= R4.H*R5.H, A0 += R4.L*R5.L (IS) || R4 = [I0++] || R5 = [I2--];\n\t"
+      "LOOP_END filter_start_inner%=;\n\t"
+      "A0 += A1;\n\t"
+      "R4 = A0;\n\t"
+      "R4 <<= 1;\n\t"
+      "R2 = [P0++];\n\t"
+      "R4 = R4 + R2;\n\t"
+      "[P1++] = R4;\n\t"
+      "R4 <<= 2;\n\t"
+      "R2 <<= 2;\n\t"
+      "R2 = PACK(R4.H, R2.H);\n\t"
+      "[P2] = R2;\n\t"
+
+   "LOOP_END filter_start%=;\n\t"
+
+   /* Samples ord to N*/   
+   "R0 = %5;\n\t"
+   "R0 <<= 1;\n\t"
+   "I0 = B0;\n\t"
+   "R0 <<= 1;\n\t"   
+   "L0 = R0;\n\t"
+   
+   "R0 = %5;\n\t"
+   "R2 = %4;\n\t"
+   "R2 = R2 - R0;\n\t"
+   "R4 = [I0++];\n\t"
+   "LC0 = R2;\n\t"
+   "P3 = R0;\n\t"
+   "R0 <<= 2;\n\t"
+   "R0 += 8;\n\t"
+   "I2 = P2;\n\t"
+   "M0 = R0;\n\t"
+   "A1 = A0 = 0;\n\t"
+   "R5 = [I2--];\n\t"
+   "LOOP filter_mid%= LC0;\n\t"
+   "LOOP_BEGIN filter_mid%=;\n\t"
+      "LOOP filter_mid_inner%= LC1=P3;\n\t"
+      "LOOP_BEGIN filter_mid_inner%=;\n\t"
+         "A1 -= R4.H*R5.H, A0 += R4.L*R5.L (IS) || R4 = [I0++] || R5 = [I2--];\n\t"
+      "LOOP_END filter_mid_inner%=;\n\t"
+      "R0 = (A0 += A1) || I2 += M0;\n\t"
+      "R0 = R0 << 1 || R5 = [P0++];\n\t"
+      "R0 = R0 + R5;\n\t"
+      "R0 = R0 << 2 || [P1++] = R0;\n\t"
+      "R5 = R5 << 2;\n\t"
+      "R5 = PACK(R0.H, R5.H);\n\t"
+      "A1 = A0 = 0 || [I2--] = R5\n\t"
+      "LOOP_END filter_mid%=;\n\t"
+   "I2 += 4;\n\t"
+   "P2 = I2;\n\t"
+   /* Update memory */
+   "P4 = %6;\n\t"
+   "R0 = %5;\n\t"
+   "LC0 = R0;\n\t"
+   "P0 = B0;\n\t"
+   "A1 = A0 = 0;\n\t"
+   "LOOP mem_update%= LC0;\n\t"
+   "LOOP_BEGIN mem_update%=;\n\t"
+      "I2 = P2;\n\t"
+      "I0 = P0;\n\t"
+      "P0 += 4;\n\t"
+      "R0 = LC0;\n\t"
+      "LC1 = R0;\n\t"
+      "R5 = [I2--] || R4 = [I0++];\n\t"
+      "LOOP mem_accum%= LC1;\n\t"
+      "LOOP_BEGIN mem_accum%=;\n\t"
+         "A1 -= R4.H*R5.H, A0 += R4.L*R5.L (IS) || R4 = [I0++] || R5 = [I2--];\n\t"
+      "LOOP_END mem_accum%=;\n\t"
+      "R0 = (A0 += A1);\n\t"
+      "A1 = A0 = 0 || [P4++] = R0;\n\t"
+   "LOOP_END mem_update%=;\n\t"
+   "L0 = 0;\n\t"
+   : : "m" (xy), "m" (_x), "m" (_y), "m" (numden), "m" (N), "m" (ord), "m" (mem)
+   : "A0", "A1", "R0", "R1", "R2", "R3", "R4", "R5", "P0", "P1", "P2", "P3", "P4", "B0", "I0", "I2", "L0", "L2", "M0", "memory"
+   );
+
+}
+
+
+
+
+#define OVERRIDE_IIR_MEM2
+void iir_mem2(const spx_sig_t *_x, const spx_coef_t *den, spx_sig_t *_y, int N, int ord, spx_mem_t *mem)
+{
+   spx_word16_t y[N+2];
+   spx_word16_t *yy;
+   yy = y+2;
+   __asm__ __volatile__
+   (
+   /* Register setup */
+   "R0 = %5;\n\t"      /*ord */
+   
+   "P1 = %3;\n\t"
+   "I1 = P1;\n\t"
+   "B1 = P1;\n\t"
+   "L1 = 0;\n\t"
+   
+   "P3 = %0;\n\t"
+   "I3 = P3;\n\t"
+   "L3 = 0;\n\t"
+   
+   "P4 = %6;\n\t"
+   "P0 = %1;\n\t"
+   "P1 = %2;\n\t"
+   
+   /* First sample */
+   "R1 = [P4++];\n\t"
+   "R1 <<= 1;\n\t"
+   "R2 = [P0++];\n\t"
+   "R1 = R1 + R2;\n\t"
+   "[P1++] = R1;\n\t"
+   "R1 <<= 2;\n\t"
+   "W[P3] = R1.H;\n\t"
+   "R2 <<= 2;\n\t"
+
+   /* Samples 1 to ord-1 (using memory) */
+   "R0 += -1;\n\t"
+   "R3 = 0;\n\t"
+   "LC0 = R0;\n\t"
+   "LOOP filter_start%= LC0;\n\t"
+   "LOOP_BEGIN filter_start%=;\n\t"
+      "R3 += 1;\n\t"
+      "LC1 = R3;\n\t"
+      
+      "R1 = [P4++];\n\t"
+      "A1 = R1;\n\t"
+      "I1 = B1;\n\t"
+      "I3 = P3;\n\t"
+      "P3 += 2;\n\t"
+      "LOOP filter_start_inner%= LC1;\n\t"
+      "LOOP_BEGIN filter_start_inner%=;\n\t"
+         "R4.L = W[I1++];\n\t"
+         "R5.L = W[I3--];\n\t"
+         "A1 -= R4.L*R5.L (IS);\n\t"
+      "LOOP_END filter_start_inner%=;\n\t"
+   
+      "R1 = A1;\n\t"
+      "R1 <<= 1;\n\t"
+      "R2 = [P0++];\n\t"
+      "R1 = R1 + R2;\n\t"
+      "[P1++] = R1;\n\t"
+      "R1 <<= 2;\n\t"
+      "W[P3] = R1.H;\n\t"
+      "R2 <<= 2;\n\t"
+   "LOOP_END filter_start%=;\n\t"
+
+   /* Samples ord to N*/   
+   "R0 = %5;\n\t"
+   "R0 <<= 1;\n\t"
+   "I1 = B1;\n\t"
+   "L1 = R0;\n\t"
+   
+   "R0 = %5;\n\t"
+   "R2 = %4;\n\t"
+   "R2 = R2 - R0;\n\t"
+   "R4.L = W[I1++];\n\t"
+   "LC0 = R2;\n\t"
+   "LOOP filter_mid%= LC0;\n\t"
+   "LOOP_BEGIN filter_mid%=;\n\t"
+      "LC1 = R0;\n\t"
+      "A1 = 0;\n\t"
+      "I3 = P3;\n\t"
+      "P3 += 2;\n\t"
+      "R5.L = W[I3--];\n\t"
+      "LOOP filter_mid_inner%= LC1;\n\t"
+      "LOOP_BEGIN filter_mid_inner%=;\n\t"
+         "A1 -= R4.L*R5.L (IS) || R4.L = W[I1++] || R5.L = W[I3--];\n\t"
+      "LOOP_END filter_mid_inner%=;\n\t"
+      "R1 = A1;\n\t"
+      "R1 = R1 << 1 || R2 = [P0++];\n\t"
+      "R1 = R1 + R2;\n\t"
+      "R1 = R1 << 2 || [P1++] = R1;\n\t"
+      "W[P3] = R1.H;\n\t"
+   "LOOP_END filter_mid%=;\n\t"
+     
+   /* Update memory */
+   "P4 = %6;\n\t"
+   "R0 = %5;\n\t"
+   "LC0 = R0;\n\t"
+   "P1 = B1;\n\t"
+   "LOOP mem_update%= LC0;\n\t"
+   "LOOP_BEGIN mem_update%=;\n\t"
+      "A0 = 0;\n\t"
+      "I3 = P3;\n\t"
+      "I1 = P1;\n\t"
+      "P1 += 2;\n\t"
+      "R0 = LC0;\n\t"
+      "LC1=R0;\n\t"
+      "R5.L = W[I3--] || R4.L = W[I1++];\n\t"
+      "LOOP mem_accum%= LC1;\n\t"
+      "LOOP_BEGIN mem_accum%=;\n\t"
+         "A0 -= R4.L*R5.L (IS) || R4.L = W[I1++] || R5.L = W[I3--];\n\t"
+      "LOOP_END mem_accum%=;\n\t"
+      "R0 = A0;\n\t"
+      "[P4++] = R0;\n\t"
+   "LOOP_END mem_update%=;\n\t"
+   "L1 = 0;\n\t"
+   : : "m" (yy), "m" (_x), "m" (_y), "m" (den), "m" (N), "m" (ord), "m" (mem)
+   : "A0", "A1", "R0", "R1", "R2", "R3", "R4", "R5", "P0", "P1", "P2", "P3", "P4", "B1", "I1", "I3", "L1", "L3", "memory"
+   );
+
+}
+
+#define OVERRIDE_FIR_MEM2
+void fir_mem2(const spx_sig_t *x, const spx_coef_t *num, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
+{
+   int i;
+   spx_coef_t den2[12];
+   spx_coef_t *den;
+   den = (spx_coef_t*)((((int)den2)+4)&0xfffffffc);
+   for (i=0;i<10;i++)
+      den[i] = 0;
+   filter_mem2(x, num, den, y, N, ord, mem);
+}
+
+
+#define OVERRIDE_COMPUTE_IMPULSE_RESPONSE
+void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack)
+{
+   int i;
+   VARDECL(spx_word16_t *ytmp);
+   ALLOC(ytmp, N, spx_word16_t);
+   spx_word16_t *ytmp2 = ytmp;
+   y[0] = LPC_SCALING;
+   for (i=0;i<ord;i++)
+      y[i+1] = awk1[i];
+   i++;
+   for (;i<N;i++)
+      y[i] = 0;
+
+   N-=1;
+   __asm__ __volatile__
+   (
+         "I0 = %0;\n\t"
+         "I1 = %1;\n\t"
+         "L0 = 0;\n\t"
+         "L1 = 0;\n\t"
+         "L2 = 0;\n\t"
+         "L3 = 0;\n\t"
+         "R0 = 1;\n\t"
+         "R0 <<= 13;\n\t"
+         "W[I0] = R0.L;\n\t"
+         "R0 <<= 1;\n\t"
+         "W[I1] = R0.L;\n\t"
+         "R0 = %5;\n\t"
+         "LC0 = R0;\n\t"
+         "R2 = 0;\n\t"
+         "LOOP samples%= LC0;\n\t"
+         "LOOP_BEGIN samples%=;\n\t"
+            "R2 += 1;\n\t"
+            "R2 = MIN(R2, %4);\n\t"
+            "I0 = %0;\n\t"
+            "I1 = %1;\n\t"
+            "I2 = %2;\n\t"
+            "I3 = %3;\n\t"
+            "%0 += 2;\n\t"
+            "%1 += 2;\n\t"
+            "A1 = A0 = 0;\n\t"
+            "R0.L = W[I0--] || R1.L = W[I2++];\n\t"
+            "LC1 = R2;\n\t"
+            "LOOP filter%= LC1;\n\t"
+            "LOOP_BEGIN filter%=;\n\t"
+               "A0 -= R0.L*R1.L (IS) || R0.L = W[I1--] || R1.L = W[I3++];\n\t"
+               "A1 -= R0.L*R1.L (IS) || R0.L = W[I0--] || R1.L = W[I2++];\n\t"
+            "LOOP_END filter%=;\n\t"
+            "R0 = A0, R1 = A1;\n\t"
+            "R3 = W[%1] (X);\n\t"
+            "R3 <<= 13;\n\t"
+            "R0 = R0 + R3;\n\t"
+            "R3 = R0 >>> 13;\n\t"
+            "W[%0] = R3.L;\n\t"
+            "R0 <<= 1;\n\t"
+            "R1 = R1 + R0;\n\t"
+            "R1 >>>= 13;\n\t"
+            "W[%1] = R1.L;\n\t"
+         "LOOP_END samples%=;\n\t"
+   : "=a" (ytmp2), "=a" (y)
+   : "a" (awk2), "a" (ak), "d" (ord), "m" (N), "0" (ytmp2), "1" (y)
+   : "A0", "A1", "R0", "R1", "R2", "R3", "I0", "I1", "I2", "I3", "L0", "L1", "L2", "L3", "A0", "A1"
+   );
+}
+
+
+
+#if 0 /* Equivalent C function for filter_mem2 and compute_impulse_response */
+#define min(a,b) ((a)<(b) ? (a):(b))
+
+void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack)
+{
+   int i,j;
+   VARDECL(spx_word16_t *ytmp);
+   ALLOC(ytmp, N, spx_word16_t);
+   
+   y[0] = LPC_SCALING;
+   for (i=0;i<ord;i++)
+      y[i+1] = awk1[i];
+   i++;
+   for (;i<N;i++)
+      y[i] = 0;
+
+   for (i=0;i<N;i++)
+   {
+      spx_word32_t yi = SHL32(EXTEND32(y[i]),LPC_SHIFT);
+      spx_word32_t yi2 = 0;
+      for (j=0;j<min(i,ord);j++)
+      {
+         yi = MAC16_16(yi, awk2[j], -ytmp[i-j-1]);
+         yi2 = MAC16_16(yi2, ak[j], -y[i-j-1]);
+      }
+      ytmp[i] = EXTRACT16(SHR32(yi,LPC_SHIFT));
+      yi2 = ADD32(yi2,SHL32(yi,1));
+      y[i] = EXTRACT16(SHR32(yi2,LPC_SHIFT));
+   }
+
+}
+
+
+void filter_mem2(const spx_sig_t *_x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *_y, int N, int ord, spx_mem_t *mem)
+{
+   int i,j;
+   spx_word16_t xi,yi,nyi;
+   spx_word16_t x[N],y[N];
+   spx_word16_t *xx, *yy;
+   xx = x;
+   yy = y;
+   for (i=0;i<N;i++)
+   {
+      x[i] = EXTRACT16(SHR32(_x[i],SIG_SHIFT));
+   }
+   
+   for (i=0;i<ord;i++)
+   {
+      spx_word32_t yi = mem[i];
+      for (j=0;j<i;j++)
+      {
+         yi = MAC16_16(yi, num[j], x[i-j-1]);
+         yi = MAC16_16(yi, den[j], -y[i-j-1]);
+      }
+      _y[i] = ADD32(_x[i],SHL32(yi,1));
+      y[i] = EXTRACT16(SHR32(_y[i],SIG_SHIFT));
+   }
+   for (i=ord;i<N;i++)
+   {
+      spx_word32_t yi = 0;
+      for (j=0;j<ord;j++)
+      {
+         yi = MAC16_16(yi, num[j], x[i-j-1]);
+         yi = MAC16_16(yi, den[j], -y[i-j-1]);
+      }
+      _y[i] = ADD32(_x[i],SHL32(yi,1));
+      y[i] = EXTRACT16(SHR32(_y[i],SIG_SHIFT));
+   }
+
+   for (i=0;i<ord;i++)
+   {
+      spx_mem_t m = 0;
+      for (j=0;j<ord-i;j++)
+      {
+         m = MAC16_16(m, x[N-1-j], num[j+i]);
+         m = MAC16_16(m, -y[N-1-j], den[j+i]);
+      }
+      mem[i] = m;
+   }
+}
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/filters_sse.h b/pjmedia/src/pjmedia-codec/speex/filters_sse.h
new file mode 100644
index 00000000..2f037476
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/filters_sse.h
@@ -0,0 +1,336 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file filters_sse.h
+   @brief Various analysis/synthesis filters (SSE version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <xmmintrin.h>
+
+void filter_mem2_10(const float *x, const float *_num, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   __m128 num[3], den[3], mem[3];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      num[i] = _mm_loadu_ps(_num+4*i);
+      den[i] = _mm_loadu_ps(_den+4*i);
+   }
+   mem[2] = _mm_setr_ps(_mem[8], _mem[9], 0, 0);
+   num[2] = _mm_setr_ps(_num[8], _num[9], 0, 0);
+   den[2] = _mm_setr_ps(_den[8], _den[9], 0, 0);
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_add_ps(mem[0], _mm_mul_ps(xx, num[0]));
+      mem[0] = _mm_sub_ps(mem[0], _mm_mul_ps(yy, den[0]));
+
+      mem[1] = _mm_move_ss(mem[1], mem[2]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_add_ps(mem[1], _mm_mul_ps(xx, num[1]));
+      mem[1] = _mm_sub_ps(mem[1], _mm_mul_ps(yy, den[1]));
+
+      mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0xfd);
+
+      mem[2] = _mm_add_ps(mem[2], _mm_mul_ps(xx, num[2]));
+      mem[2] = _mm_sub_ps(mem[2], _mm_mul_ps(yy, den[2]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+   _mm_store_ss(_mem+8, mem[2]);
+   mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0x55);
+   _mm_store_ss(_mem+9, mem[2]);
+}
+
+void filter_mem2_8(const float *x, const float *_num, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   __m128 num[2], den[2], mem[2];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      num[i] = _mm_loadu_ps(_num+4*i);
+      den[i] = _mm_loadu_ps(_den+4*i);
+   }
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_add_ps(mem[0], _mm_mul_ps(xx, num[0]));
+      mem[0] = _mm_sub_ps(mem[0], _mm_mul_ps(yy, den[0]));
+
+      mem[1] = _mm_sub_ss(mem[1], mem[1]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_add_ps(mem[1], _mm_mul_ps(xx, num[1]));
+      mem[1] = _mm_sub_ps(mem[1], _mm_mul_ps(yy, den[1]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+}
+
+
+#define OVERRIDE_FILTER_MEM2
+void filter_mem2(const float *x, const float *_num, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   if(ord==10)
+      filter_mem2_10(x, _num, _den, y, N, ord, _mem);
+   else if (ord==8)
+      filter_mem2_8(x, _num, _den, y, N, ord, _mem);
+}
+
+
+
+void iir_mem2_10(const float *x, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   __m128 den[3], mem[3];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      den[i] = _mm_loadu_ps(_den+4*i);
+   }
+   mem[2] = _mm_setr_ps(_mem[8], _mem[9], 0, 0);
+   den[2] = _mm_setr_ps(_den[8], _den[9], 0, 0);
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_sub_ps(mem[0], _mm_mul_ps(yy, den[0]));
+
+      mem[1] = _mm_move_ss(mem[1], mem[2]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_sub_ps(mem[1], _mm_mul_ps(yy, den[1]));
+
+      mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0xfd);
+
+      mem[2] = _mm_sub_ps(mem[2], _mm_mul_ps(yy, den[2]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+   _mm_store_ss(_mem+8, mem[2]);
+   mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0x55);
+   _mm_store_ss(_mem+9, mem[2]);
+}
+
+
+void iir_mem2_8(const float *x, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   __m128 den[2], mem[2];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      den[i] = _mm_loadu_ps(_den+4*i);
+   }
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_sub_ps(mem[0], _mm_mul_ps(yy, den[0]));
+
+      mem[1] = _mm_sub_ss(mem[1], mem[1]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_sub_ps(mem[1], _mm_mul_ps(yy, den[1]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+}
+
+#define OVERRIDE_IIR_MEM2
+void iir_mem2(const float *x, const float *_den, float *y, int N, int ord, float *_mem)
+{
+   if(ord==10)
+      iir_mem2_10(x, _den, y, N, ord, _mem);
+   else if (ord==8)
+      iir_mem2_8(x, _den, y, N, ord, _mem);
+}
+
+
+void fir_mem2_10(const float *x, const float *_num, float *y, int N, int ord, float *_mem)
+{
+   __m128 num[3], mem[3];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      num[i] = _mm_loadu_ps(_num+4*i);
+   }
+   mem[2] = _mm_setr_ps(_mem[8], _mem[9], 0, 0);
+   num[2] = _mm_setr_ps(_num[8], _num[9], 0, 0);
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_add_ps(mem[0], _mm_mul_ps(xx, num[0]));
+
+      mem[1] = _mm_move_ss(mem[1], mem[2]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_add_ps(mem[1], _mm_mul_ps(xx, num[1]));
+
+      mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0xfd);
+
+      mem[2] = _mm_add_ps(mem[2], _mm_mul_ps(xx, num[2]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+   _mm_store_ss(_mem+8, mem[2]);
+   mem[2] = _mm_shuffle_ps(mem[2], mem[2], 0x55);
+   _mm_store_ss(_mem+9, mem[2]);
+}
+
+void fir_mem2_8(const float *x, const float *_num, float *y, int N, int ord, float *_mem)
+{
+   __m128 num[2], mem[2];
+
+   int i;
+
+   /* Copy numerator, denominator and memory to aligned xmm */
+   for (i=0;i<2;i++)
+   {
+      mem[i] = _mm_loadu_ps(_mem+4*i);
+      num[i] = _mm_loadu_ps(_num+4*i);
+   }
+   
+   for (i=0;i<N;i++)
+   {
+      __m128 xx;
+      __m128 yy;
+      /* Compute next filter result */
+      xx = _mm_load_ps1(x+i);
+      yy = _mm_add_ss(xx, mem[0]);
+      _mm_store_ss(y+i, yy);
+      yy = _mm_shuffle_ps(yy, yy, 0);
+      
+      /* Update memory */
+      mem[0] = _mm_move_ss(mem[0], mem[1]);
+      mem[0] = _mm_shuffle_ps(mem[0], mem[0], 0x39);
+
+      mem[0] = _mm_add_ps(mem[0], _mm_mul_ps(xx, num[0]));
+
+      mem[1] = _mm_sub_ss(mem[1], mem[1]);
+      mem[1] = _mm_shuffle_ps(mem[1], mem[1], 0x39);
+
+      mem[1] = _mm_add_ps(mem[1], _mm_mul_ps(xx, num[1]));
+   }
+   /* Put memory back in its place */
+   _mm_storeu_ps(_mem, mem[0]);
+   _mm_storeu_ps(_mem+4, mem[1]);
+}
+
+#define OVERRIDE_FIR_MEM2
+void fir_mem2(const float *x, const float *_num, float *y, int N, int ord, float *_mem)
+{
+   if(ord==10)
+      fir_mem2_10(x, _num, y, N, ord, _mem);
+   else if (ord==8)
+      fir_mem2_8(x, _num, y, N, ord, _mem);
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/fixed_arm4.h b/pjmedia/src/pjmedia-codec/speex/fixed_arm4.h
new file mode 100644
index 00000000..b6981cae
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/fixed_arm4.h
@@ -0,0 +1,148 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file fixed_arm4.h
+   @brief ARM4 fixed-point operations
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARM4_H
+#define FIXED_ARM4_H
+
+#undef MULT16_32_Q14
+static inline spx_word32_t MULT16_32_Q14(spx_word16_t x, spx_word32_t y) {
+  int res;
+  int dummy;
+  asm (
+        "smull  %0,%1,%2,%3 \n\t"
+        "mov %0, %0, lsr #14 \n\t"
+        "add %0, %0, %1, lsl #18 \n\t"
+   : "=&r"(res), "=&r" (dummy)
+   : "r"(y),"r"((int)x));
+  return(res);
+}
+
+#undef MULT16_32_Q15
+static inline spx_word32_t MULT16_32_Q15(spx_word16_t x, spx_word32_t y) {
+  int res;
+  int dummy;
+  asm (
+        "smull  %0,%1,%2,%3 \n\t"
+        "mov %0, %0, lsr #15 \n\t"
+        "add %0, %0, %1, lsl #17 \n\t"
+   : "=&r"(res), "=&r" (dummy)
+   : "r"(y),"r"((int)x));
+  return(res);
+}
+
+#undef DIV32_16
+static inline short DIV32_16(int a, int b)
+{
+   int res=0;
+   int dead1, dead2, dead3, dead4, dead5;
+   __asm__ __volatile__ (
+         "\teor %5, %0, %1\n"
+         "\tmovs %4, %0\n"
+         "\trsbmi %0, %0, #0 \n"
+         "\tmovs %4, %1\n"
+         "\trsbmi %1, %1, #0 \n"
+         "\tmov %4, #1\n"
+
+         "\tsubs %3, %0, %1, asl #14 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #14 \n"
+
+         "\tsubs %3, %0, %1, asl #13 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #13 \n"
+
+         "\tsubs %3, %0, %1, asl #12 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #12 \n"
+
+         "\tsubs %3, %0, %1, asl #11 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #11 \n"
+
+         "\tsubs %3, %0, %1, asl #10 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #10 \n"
+
+         "\tsubs %3, %0, %1, asl #9 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #9 \n"
+
+         "\tsubs %3, %0, %1, asl #8 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #8 \n"
+
+         "\tsubs %3, %0, %1, asl #7 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #7 \n"
+
+         "\tsubs %3, %0, %1, asl #6 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #6 \n"
+         
+         "\tsubs %3, %0, %1, asl #5 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #5 \n"
+
+         "\tsubs %3, %0, %1, asl #4 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #4 \n"
+
+         "\tsubs %3, %0, %1, asl #3 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #3 \n"
+
+         "\tsubs %3, %0, %1, asl #2 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #2 \n"
+
+         "\tsubs %3, %0, %1, asl #1 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4, asl #1 \n"
+
+         "\tsubs %3, %0, %1 \n"
+         "\tmovpl %0, %3 \n"
+         "\torrpl %2, %2, %4 \n"
+
+         "\tmovs %5, %5, lsr #31 \n"
+         "\trsbne %2, %2, #0 \n"
+   : "=r" (dead1), "=r" (dead2), "=r" (res),
+   "=r" (dead3), "=r" (dead4), "=r" (dead5)
+   : "0" (a), "1" (b), "2" (res)
+   : "cc"
+                        );
+   return res;
+}
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/fixed_arm5e.h b/pjmedia/src/pjmedia-codec/speex/fixed_arm5e.h
new file mode 100644
index 00000000..9b4861c9
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/fixed_arm5e.h
@@ -0,0 +1,178 @@
+/* Copyright (C) 2003 Jean-Marc Valin */
+/**
+   @file fixed_arm5e.h
+   @brief ARM-tuned fixed-point operations
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARM5E_H
+#define FIXED_ARM5E_H
+
+#undef MULT16_16
+static inline spx_word32_t MULT16_16(spx_word16_t x, spx_word16_t y) {
+  int res;
+  asm ("smulbb  %0,%1,%2;\n"
+              : "=&r"(res)
+              : "%r"(x),"r"(y));
+  return(res);
+}
+
+#undef MAC16_16
+static inline spx_word32_t MAC16_16(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+  int res;
+  asm ("smlabb  %0,%1,%2,%3;\n"
+              : "=&r"(res)
+               : "%r"(x),"r"(y),"r"(a));
+  return(res);
+}
+
+#undef MULT16_32_Q15
+static inline spx_word32_t MULT16_32_Q15(spx_word16_t x, spx_word32_t y) {
+  int res;
+  asm ("smulwb  %0,%1,%2;\n"
+              : "=&r"(res)
+               : "%r"(y<<1),"r"(x));
+  return(res);
+}
+
+#undef MAC16_32_Q15
+static inline spx_word32_t MAC16_32_Q15(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+  int res;
+  asm ("smlawb  %0,%1,%2,%3;\n"
+              : "=&r"(res)
+               : "%r"(y<<1),"r"(x),"r"(a));
+  return(res);
+}
+
+#undef MULT16_32_Q11
+static inline spx_word32_t MULT16_32_Q11(spx_word16_t x, spx_word32_t y) {
+  int res;
+  asm ("smulwb  %0,%1,%2;\n"
+              : "=&r"(res)
+               : "%r"(y<<5),"r"(x));
+  return(res);
+}
+
+#undef MAC16_32_Q11
+static inline spx_word32_t MAC16_32_Q11(spx_word32_t a, spx_word16_t x, spx_word32_t y) {
+  int res;
+  asm ("smlawb  %0,%1,%2,%3;\n"
+              : "=&r"(res)
+               : "%r"(y<<5),"r"(x),"r"(a));
+  return(res);
+}
+
+#undef DIV32_16
+static inline short DIV32_16(int a, int b)
+{
+   int res=0;
+   int dead1, dead2, dead3, dead4, dead5;
+   __asm__ __volatile__ (
+         "\teor %5, %0, %1\n"
+         "\tmovs %4, %0\n"
+         "\trsbmi %0, %0, #0 \n"
+         "\tmovs %4, %1\n"
+         "\trsbmi %1, %1, #0 \n"
+         "\tmov %4, #1\n"
+
+         "\tsubs %3, %0, %1, asl #14 \n"
+         "\torrpl %2, %2, %4, asl #14 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #13 \n"
+         "\torrpl %2, %2, %4, asl #13 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #12 \n"
+         "\torrpl %2, %2, %4, asl #12 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #11 \n"
+         "\torrpl %2, %2, %4, asl #11 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #10 \n"
+         "\torrpl %2, %2, %4, asl #10 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #9 \n"
+         "\torrpl %2, %2, %4, asl #9 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #8 \n"
+         "\torrpl %2, %2, %4, asl #8 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #7 \n"
+         "\torrpl %2, %2, %4, asl #7 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #6 \n"
+         "\torrpl %2, %2, %4, asl #6 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #5 \n"
+         "\torrpl %2, %2, %4, asl #5 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #4 \n"
+         "\torrpl %2, %2, %4, asl #4 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #3 \n"
+         "\torrpl %2, %2, %4, asl #3 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #2 \n"
+         "\torrpl %2, %2, %4, asl #2 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1, asl #1 \n"
+         "\torrpl %2, %2, %4, asl #1 \n"
+         "\tmovpl %0, %3 \n"
+
+         "\tsubs %3, %0, %1 \n"
+         "\torrpl %2, %2, %4 \n"
+         "\tmovpl %0, %3 \n"
+         
+         "\tmovs %5, %5, lsr #31 \n"
+         "\trsbne %2, %2, #0 \n"
+   : "=r" (dead1), "=r" (dead2), "=r" (res),
+   "=r" (dead3), "=r" (dead4), "=r" (dead5)
+   : "0" (a), "1" (b), "2" (res)
+   : "memory", "cc"
+                        );
+   return res;
+}
+
+
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/fixed_bfin.h b/pjmedia/src/pjmedia-codec/speex/fixed_bfin.h
new file mode 100644
index 00000000..adee43cb
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/fixed_bfin.h
@@ -0,0 +1,148 @@
+/* Copyright (C) 2005 Analog Devices
+   Author: Jean-Marc Valin */
+/**
+   @file fixed_bfin.h
+   @brief Blackfin fixed-point operations
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_BFIN_H
+#define FIXED_BFIN_H
+
+#undef DIV32_16
+static inline spx_word16_t DIV32_16(spx_word32_t a, spx_word16_t b)
+{
+   spx_word32_t res, bb;
+   bb = b;
+   __asm__  (
+         "P0 = 15;\n\t"
+         "R0 = %1;\n\t"
+         "R1 = %2;\n\t"
+         "R0 <<= 1;\n\t"
+         "DIVS (R0, R1);\n\t"
+         "LOOP divide%= LC0 = P0;\n\t"
+         "LOOP_BEGIN divide%=;\n\t"
+            "DIVQ (R0, R1);\n\t"
+         "LOOP_END divide%=;\n\t"
+         "R0 = R0.L;\n\t"
+         "%0 = R0;\n\t"
+   : "=m" (res)
+   : "m" (a), "m" (bb)
+   : "P0", "R0", "R1", "cc");
+   return res;
+}
+
+#undef MAX16
+static inline spx_word16_t MAX16(spx_word16_t a, spx_word16_t b)
+{
+   spx_word32_t res;
+   __asm__  (
+         "%1 = %1.L (X);\n\t"
+         "%2 = %2.L (X);\n\t"
+         "%0 = MAX(%1,%2);"
+   : "=d" (res)
+   : "%d" (a), "d" (b)
+   );
+   return res;
+}
+
+#undef MULT16_32_Q15
+static inline spx_word32_t MULT16_32_Q15(spx_word16_t a, spx_word32_t b)
+{
+   spx_word32_t res;
+   __asm__
+   (
+         "%1 <<= 1;\n\t"
+         "A1 = %2.L*%1.L (M,IS);\n\t"
+         "A1 = A1 >>> 16;\n\t"
+         "R1 = (A1 += %2.L*%1.H) (IS);\n\t"
+         "%0 = R1;\n\t"
+   : "=&d" (res), "=&d" (b)
+   : "d" (a), "1" (b)
+   : "A1", "R1"
+   );
+   return res;
+}
+
+#undef MAC16_32_Q15
+static inline spx_word32_t MAC16_32_Q15(spx_word32_t c, spx_word16_t a, spx_word32_t b)
+{
+   spx_word32_t res;
+   __asm__
+         (
+         "%1 <<= 1;\n\t"
+         "A1 = %2.L*%1.L (M,IS);\n\t"
+         "A1 = A1 >>> 16;\n\t"
+         "R1 = (A1 += %2.L*%1.H) (IS);\n\t"
+         "%0 = R1 + %4;\n\t"
+   : "=&d" (res), "=&d" (b)
+   : "d" (a), "1" (b), "d" (c)
+   : "A1", "R1"
+         );
+   return res;
+}
+
+#undef MULT16_32_Q14
+static inline spx_word32_t MULT16_32_Q14(spx_word16_t a, spx_word32_t b)
+{
+   spx_word32_t res;
+   __asm__
+         (
+         "%2 <<= 2;\n\t"
+         "A1 = %1.L*%2.L (M,IS);\n\t"
+         "A1 = A1 >>> 16;\n\t"
+         "R1 = (A1 += %1.L*%2.H) (IS);\n\t"
+         "%0 = R1;\n\t"
+   : "=d" (res), "=d" (a), "=d" (b)
+   : "1" (a), "2" (b)
+   : "A1", "R1"
+         );
+   return res;
+}
+
+#undef MAC16_32_Q14
+static inline spx_word32_t MAC16_32_Q14(spx_word32_t c, spx_word16_t a, spx_word32_t b)
+{
+   spx_word32_t res;
+   __asm__
+         (
+         "%1 <<= 2;\n\t"
+         "A1 = %2.L*%1.L (M,IS);\n\t"
+         "A1 = A1 >>> 16;\n\t"
+         "R1 = (A1 += %2.L*%1.H) (IS);\n\t"
+         "%0 = R1 + %4;\n\t"
+   : "=&d" (res), "=&d" (b)
+   : "d" (a), "1" (b), "d" (c)
+   : "A1", "R1"
+         );
+   return res;
+}
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/fixed_debug.h b/pjmedia/src/pjmedia-codec/speex/fixed_debug.h
new file mode 100644
index 00000000..7403a18e
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/fixed_debug.h
@@ -0,0 +1,443 @@
+/* Copyright (C) 2003 Jean-Marc Valin */
+/**
+   @file fixed_debug.h
+   @brief Fixed-point operations with debugging
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_DEBUG_H
+#define FIXED_DEBUG_H
+
+#include <stdio.h>
+
+extern long long spx_mips;
+#define MIPS_INC spx_mips++,
+
+#define QCONST16(x,bits) ((spx_word16_t)((x)*(1<<(bits))+(1<<((bits)-1))))
+#define QCONST32(x,bits) ((spx_word32_t)((x)*(1<<(bits))+(1<<((bits)-1))))
+
+#define VERIFY_SHORT(x) ((x)<=32767&&(x)>=-32768)
+#define VERIFY_INT(x) ((x)<=2147483647LL&&(x)>=-2147483648LL)
+
+static inline short NEG16(int x)
+{
+   int res;
+   if (!VERIFY_SHORT(x))
+   {
+      fprintf (stderr, "NEG16: input is not short: %d\n", (int)x);
+   }
+   res = -x;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "NEG16: output is not short: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+static inline int NEG32(long long x)
+{
+   long long res;
+   if (!VERIFY_INT(x))
+   {
+      fprintf (stderr, "NEG16: input is not int: %d\n", (int)x);
+   }
+   res = -x;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "NEG16: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+
+static inline short EXTRACT16(int x)
+{
+   int res;
+   if (!VERIFY_SHORT(x))
+   {
+      fprintf (stderr, "EXTRACT16: input is not short: %d\n", x);
+   }
+   res = x;
+   spx_mips++;
+   return res;
+}
+
+static inline int EXTEND32(int x)
+{
+   int res;
+   if (!VERIFY_SHORT(x))
+   {
+      fprintf (stderr, "EXTRACT16: input is not short: %d\n", x);
+   }
+   res = x;
+   spx_mips++;
+   return res;
+}
+
+static inline short SHR16(int a, int shift) 
+{
+   int res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(shift))
+   {
+      fprintf (stderr, "SHR16: inputs are not short: %d %d\n", a, shift);
+   }
+   res = a>>shift;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "SHR16: output is not short: %d\n", res);
+   spx_mips++;
+   return res;
+}
+static inline short SHL16(int a, int shift) 
+{
+   int res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(shift))
+   {
+      fprintf (stderr, "SHR16: inputs are not short: %d %d\n", a, shift);
+   }
+   res = a<<shift;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "SHR16: output is not short: %d\n", res);
+   spx_mips++;
+   return res;
+}
+
+static inline int SHR32(long long a, int shift) 
+{
+   long long  res;
+   if (!VERIFY_INT(a) || !VERIFY_SHORT(shift))
+   {
+      fprintf (stderr, "SHR32: inputs are not int: %d %d\n", (int)a, shift);
+   }
+   res = a>>shift;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "SHR32: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+static inline int SHL32(long long a, int shift) 
+{
+   long long  res;
+   if (!VERIFY_INT(a) || !VERIFY_SHORT(shift))
+   {
+      fprintf (stderr, "SHR32: inputs are not int: %d %d\n", (int)a, shift);
+   }
+   res = a<<shift;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "SHR32: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+
+
+#define PSHR16(a,shift) (SHR16(ADD16(a,(1<<((shift)-1))),shift))
+#define PSHR32(a,shift) (SHR32(ADD32(a,(1<<((shift)-1))),shift))
+#define SATURATE16(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
+#define SATURATE32(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
+
+#define SHR(a,shift) ((a) >> (shift))
+#define SHL(a,shift) ((a) << (shift))
+
+static inline short ADD16(int a, int b) 
+{
+   int res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "ADD16: inputs are not short: %d %d\n", a, b);
+   }
+   res = a+b;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "ADD16: output is not short: %d\n", res);
+   spx_mips++;
+   return res;
+}
+static inline short SUB16(int a, int b) 
+{
+   int res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "SUB16: inputs are not short: %d %d\n", a, b);
+   }
+   res = a-b;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "SUB16: output is not short: %d\n", res);
+   spx_mips++;
+   return res;
+}
+
+static inline int ADD32(long long a, long long b) 
+{
+   long long res;
+   if (!VERIFY_INT(a) || !VERIFY_INT(b))
+   {
+      fprintf (stderr, "ADD32: inputs are not int: %d %d\n", (int)a, (int)b);
+   }
+   res = a+b;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "ADD32: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+
+static inline int SUB32(long long a, long long b) 
+{
+   long long res;
+   if (!VERIFY_INT(a) || !VERIFY_INT(b))
+   {
+      fprintf (stderr, "SUB32: inputs are not int: %d %d\n", (int)a, (int)b);
+   }
+   res = a-b;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "SUB32: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+
+#define ADD64(a,b) (MIPS_INC(a)+(b))
+
+#define PSHR(a,shift) (SHR((a)+(1<<((shift)-1)),shift))
+
+/* result fits in 16 bits */
+static inline short MULT16_16_16(int a, int b) 
+{
+   int res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_16: inputs are not short: %d %d\n", a, b);
+   }
+   res = a*b;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_16: output is not short: %d\n", res);
+   spx_mips++;
+   return res;
+}
+
+static inline int MULT16_16(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_16: output is not int: %d\n", (int)res);
+   spx_mips++;
+   return res;
+}
+
+#define MAC16_16(c,a,b)     (spx_mips--,ADD32((c),MULT16_16((a),(b))))
+#define MAC16_16_Q11(c,a,b)     (ADD16((c),EXTRACT16(SHR32(MULT16_16((a),(b)),11))))
+#define MAC16_16_Q13(c,a,b)     (ADD16((c),EXTRACT16(SHR32(MULT16_16((a),(b)),13))))
+
+static inline int MULT16_32_QX(int a, long long b, int Q)
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_INT(b))
+   {
+      fprintf (stderr, "MULT16_32_Q%d: inputs are not short+int: %d %d\n", Q, (int)a, (int)b);
+   }
+   res = (((long long)a)*(long long)b) >> Q;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_32_Q%d: output is not int: %d*%d=%d\n", Q, (int)a, (int)b,(int)res);
+   spx_mips+=5;
+   return res;
+}
+
+
+#define MULT16_32_Q11(a,b) MULT16_32_QX(a,b,11)
+#define MAC16_32_Q11(c,a,b) ADD32((c),MULT16_32_Q11((a),(b)))
+#define MULT16_32_Q12(a,b) MULT16_32_QX(a,b,12)
+#define MULT16_32_Q13(a,b) MULT16_32_QX(a,b,13)
+#define MULT16_32_Q14(a,b) MULT16_32_QX(a,b,14)
+#define MULT16_32_Q15(a,b) MULT16_32_QX(a,b,15)
+#define MAC16_32_Q15(c,a,b) ADD32((c),MULT16_32_Q15((a),(b)))
+
+static inline int SATURATE(int a, int b)
+{
+   if (a>b)
+      a=b;
+   if (a<-b)
+      a = -b;
+   return a;
+}
+
+static inline int MULT16_16_Q11_32(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_Q11: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res >>= 11;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_16_Q11: output is not short: %d*%d=%d\n", (int)a, (int)b, (int)res);
+   spx_mips+=3;
+   return res;
+}
+static inline short MULT16_16_Q13(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_Q13: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res >>= 13;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_Q13: output is not short: %d*%d=%d\n", a, b, (int)res);
+   spx_mips+=3;
+   return res;
+}
+static inline short MULT16_16_Q14(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_Q14: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res >>= 14;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_Q14: output is not short: %d\n", (int)res);
+   spx_mips+=3;
+   return res;
+}
+static inline short MULT16_16_Q15(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_Q15: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res >>= 15;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_Q15: output is not short: %d\n", (int)res);
+   spx_mips+=3;
+   return res;
+}
+
+static inline short MULT16_16_P13(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_P13: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res += 4096;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_16_P13: overflow: %d*%d=%d\n", a, b, (int)res);
+   res >>= 13;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_P13: output is not short: %d*%d=%d\n", a, b, (int)res);
+   spx_mips+=4;
+   return res;
+}
+static inline short MULT16_16_P14(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_P14: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res += 8192;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_16_P14: overflow: %d*%d=%d\n", a, b, (int)res);
+   res >>= 14;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_P14: output is not short: %d*%d=%d\n", a, b, (int)res);
+   spx_mips+=4;
+   return res;
+}
+static inline short MULT16_16_P15(int a, int b) 
+{
+   long long res;
+   if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "MULT16_16_P15: inputs are not short: %d %d\n", a, b);
+   }
+   res = ((long long)a)*b;
+   res += 16384;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "MULT16_16_P15: overflow: %d*%d=%d\n", a, b, (int)res);
+   res >>= 15;
+   if (!VERIFY_SHORT(res))
+      fprintf (stderr, "MULT16_16_P15: output is not short: %d*%d=%d\n", a, b, (int)res);
+   spx_mips+=4;
+   return res;
+}
+
+
+static inline int DIV32_16(long long a, long long b) 
+{
+   long long res;
+   if (b==0)
+   {
+      fprintf(stderr, "DIV32_16: divide by zero: %d/%d\n", (int)a, (int)b);
+      return 0;
+   }
+   if (!VERIFY_INT(a) || !VERIFY_SHORT(b))
+   {
+      fprintf (stderr, "DIV32_16: inputs are not int/short: %d %d\n", (int)a, (int)b);
+   }
+   res = a/b;
+   if (!VERIFY_SHORT(res))
+   {
+      fprintf (stderr, "DIV32_16: output is not short: %d / %d = %d\n", (int)a,(int)b,(int)res);
+      if (res>32767)
+         res = 32767;
+      if (res<-32768)
+         res = -32768;
+   }
+   spx_mips+=20;
+   return res;
+}
+static inline int DIV32(long long a, long long b) 
+{
+   long long res;
+   if (b==0)
+   {
+      fprintf(stderr, "DIV32: divide by zero: %d/%d\n", (int)a, (int)b);
+      return 0;
+   }
+
+   if (!VERIFY_INT(a) || !VERIFY_INT(b))
+   {
+      fprintf (stderr, "DIV32: inputs are not int/short: %d %d\n", (int)a, (int)b);
+   }
+   res = a/b;
+   if (!VERIFY_INT(res))
+      fprintf (stderr, "DIV32: output is not int: %d\n", (int)res);
+   spx_mips+=36;
+   return res;
+}
+
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/fixed_generic.h b/pjmedia/src/pjmedia-codec/speex/fixed_generic.h
new file mode 100644
index 00000000..d4bdc159
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/fixed_generic.h
@@ -0,0 +1,102 @@
+/* Copyright (C) 2003 Jean-Marc Valin */
+/**
+   @file fixed_generic.h
+   @brief Generic fixed-point operations
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_GENERIC_H
+#define FIXED_GENERIC_H
+
+#define QCONST16(x,bits) ((spx_word16_t)(.5+(x)*(1<<(bits))))
+#define QCONST32(x,bits) ((spx_word32_t)(.5+(x)*(1<<(bits))))
+
+#define NEG16(x) (-(x))
+#define NEG32(x) (-(x))
+#define EXTRACT16(x) ((spx_word16_t)x)
+#define EXTEND32(x) ((spx_word32_t)x)
+#define SHR16(a,shift) ((a) >> (shift))
+#define SHL16(a,shift) ((a) << (shift))
+#define SHR32(a,shift) ((a) >> (shift))
+#define SHL32(a,shift) ((a) << (shift))
+#define PSHR16(a,shift) (SHR16((a)+(1<<((shift)-1)),shift))
+#define PSHR32(a,shift) (SHR32((a)+(1<<((shift)-1)),shift))
+#define SATURATE16(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
+#define SATURATE32(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
+
+#define SHR(a,shift) ((a) >> (shift))
+#define SHL(a,shift) ((spx_word32_t)(a) << (shift))
+#define PSHR(a,shift) (SHR((a)+(1<<((shift)-1)),shift))
+#define SATURATE(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
+
+
+#define ADD16(a,b) ((spx_word16_t)((spx_word16_t)(a)+(spx_word16_t)(b)))
+#define SUB16(a,b) ((spx_word16_t)(a)-(spx_word16_t)(b))
+#define ADD32(a,b) ((spx_word32_t)(a)+(spx_word32_t)(b))
+#define SUB32(a,b) ((spx_word32_t)(a)-(spx_word32_t)(b))
+#define ADD64(a,b) ((spx_word64_t)(a)+(spx_word64_t)(b))
+
+
+/* result fits in 16 bits */
+#define MULT16_16_16(a,b)     ((((spx_word16_t)(a))*((spx_word16_t)(b))))
+
+/* (spx_word32_t)(spx_word16_t) gives TI compiler a hint that it's 16x16->32 multiply */
+#define MULT16_16(a,b)     (((spx_word32_t)(spx_word16_t)(a))*((spx_word32_t)(spx_word16_t)(b)))
+
+#define MAC16_16(c,a,b) (ADD32((c),MULT16_16((a),(b))))
+#define MULT16_32_Q12(a,b) ADD32(MULT16_16((a),SHR((b),12)), SHR(MULT16_16((a),((b)&0x00000fff)),12))
+#define MULT16_32_Q13(a,b) ADD32(MULT16_16((a),SHR((b),13)), SHR(MULT16_16((a),((b)&0x00001fff)),13))
+#define MULT16_32_Q14(a,b) ADD32(MULT16_16((a),SHR((b),14)), SHR(MULT16_16((a),((b)&0x00003fff)),14))
+
+#define MULT16_32_Q11(a,b) ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11))
+#define MAC16_32_Q11(c,a,b) ADD32(c,ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11)))
+
+#define MULT16_32_Q15(a,b) ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15))
+#define MAC16_32_Q15(c,a,b) ADD32(c,ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15)))
+
+
+#define MAC16_16_Q11(c,a,b)     (ADD32((c),SHR(MULT16_16((a),(b)),11)))
+#define MAC16_16_Q13(c,a,b)     (ADD32((c),SHR(MULT16_16((a),(b)),13)))
+
+#define MULT16_16_Q11_32(a,b) (SHR(MULT16_16((a),(b)),11))
+#define MULT16_16_Q13(a,b) (SHR(MULT16_16((a),(b)),13))
+#define MULT16_16_Q14(a,b) (SHR(MULT16_16((a),(b)),14))
+#define MULT16_16_Q15(a,b) (SHR(MULT16_16((a),(b)),15))
+
+#define MULT16_16_P13(a,b) (SHR(ADD32(4096,MULT16_16((a),(b))),13))
+#define MULT16_16_P14(a,b) (SHR(ADD32(8192,MULT16_16((a),(b))),14))
+#define MULT16_16_P15(a,b) (SHR(ADD32(16384,MULT16_16((a),(b))),15))
+
+#define MUL_16_32_R15(a,bh,bl) ADD32(MULT16_16((a),(bh)), SHR(MULT16_16((a),(bl)),15))
+
+#define DIV32_16(a,b) ((spx_word16_t)(((spx_word32_t)(a))/((spx_word16_t)(b))))
+#define DIV32(a,b) (((spx_word32_t)(a))/((spx_word32_t)(b)))
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/gain_table.c b/pjmedia/src/pjmedia-codec/speex/gain_table.c
new file mode 100644
index 00000000..54a54070
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/gain_table.c
@@ -0,0 +1,160 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: gain_table.c
+   Codebook for 3-tap pitch prediction gain (128 entries)
+  
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.  
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+const signed char gain_cdbk_nb[384] = {
+-32,-32,-32,
+-28,-67,-5,
+-42,-6,-32,
+-57,-10,-54,
+-16,27,-41,
+19,-19,-40,
+-45,24,-21,
+-8,-14,-18,
+1,14,-58,
+-18,-88,-39,
+-38,21,-18,
+-19,20,-43,
+10,17,-48,
+-52,-58,-13,
+-44,-1,-11,
+-12,-11,-34,
+14,0,-46,
+-37,-35,-34,
+-25,44,-30,
+6,-4,-63,
+-31,43,-41,
+-23,30,-43,
+-43,26,-14,
+-33,1,-13,
+-13,18,-37,
+-46,-73,-45,
+-36,24,-25,
+-36,-11,-20,
+-25,12,-18,
+-36,-69,-59,
+-45,6,8,
+-22,-14,-24,
+-1,13,-44,
+-39,-48,-26,
+-32,31,-37,
+-33,15,-46,
+-24,30,-36,
+-41,31,-23,
+-50,22,-4,
+-22,2,-21,
+-17,30,-34,
+-7,-60,-28,
+-38,42,-28,
+-44,-11,21,
+-16,8,-44,
+-39,-55,-43,
+-11,-35,26,
+-9,0,-34,
+-8,121,-81,
+7,-16,-22,
+-37,33,-31,
+-27,-7,-36,
+-34,70,-57,
+-37,-11,-48,
+-40,17,-1,
+-33,6,-6,
+-9,0,-20,
+-21,69,-33,
+-29,33,-31,
+-55,12,-1,
+-33,27,-22,
+-50,-33,-47,
+-50,54,51,
+-1,-5,-44,
+-4,22,-40,
+-39,-66,-25,
+-33,1,-26,
+-24,-23,-25,
+-11,21,-45,
+-25,-45,-19,
+-43,105,-16,
+5,-21,1,
+-16,11,-33,
+-13,-99,-4,
+-37,33,-15,
+-25,37,-63,
+-36,24,-31,
+-53,-56,-38,
+-41,-4,4,
+-33,13,-30,
+49,52,-94,
+-5,-30,-15,
+1,38,-40,
+-23,12,-36,
+-17,40,-47,
+-37,-41,-39,
+-49,34,0,
+-18,-7,-4,
+-16,17,-27,
+30,5,-62,
+4,48,-68,
+-43,11,-11,
+-18,19,-15,
+-23,-62,-39,
+-42,10,-2,
+-21,-13,-13,
+-9,13,-47,
+-23,-62,-24,
+-44,60,-21,
+-18,-3,-52,
+-22,22,-36,
+-75,57,16,
+-19,3,10,
+-29,23,-38,
+-5,-62,-51,
+-51,40,-18,
+-42,13,-24,
+-34,14,-20,
+-56,-75,-26,
+-26,32,15,
+-26,17,-29,
+-7,28,-52,
+-12,-30,5,
+-5,-48,-5,
+2,2,-43,
+21,16,16,
+-25,-45,-32,
+-43,18,-10,
+9,0,-1,
+-1,7,-30,
+19,-48,-4,
+-28,25,-29,
+-22,0,-31,
+-32,17,-10,
+-64,-41,-62,
+-52,15,16,
+-30,-22,-32,
+-7,9,-38};
diff --git a/pjmedia/src/pjmedia-codec/speex/gain_table_lbr.c b/pjmedia/src/pjmedia-codec/speex/gain_table_lbr.c
new file mode 100644
index 00000000..24357f03
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/gain_table_lbr.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: gain_table_lbr.c
+   Codebook for 3-tap pitch prediction gain (32 entries)
+  
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.  
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+const signed char gain_cdbk_lbr[96] = {
+-32,-32,-32,
+-31,-58,-16,
+-41,-24,-43,
+-56,-22,-55,
+-13,33,-41,
+-4,-39,-9,
+-41,15,-12,
+-8,-15,-12,
+1,2,-44,
+-22,-66,-42,
+-38,28,-23,
+-21,14,-37,
+0,21,-50,
+-53,-71,-27,
+-37,-1,-19,
+-19,-5,-28,
+6,65,-44,
+-33,-48,-33,
+-40,57,-14,
+-17,4,-45,
+-31,38,-33,
+-23,28,-40,
+-43,29,-12,
+-34,13,-23,
+-16,15,-27,
+-14,-82,-15,
+-31,25,-32,
+-21,5,-5,
+-47,-63,-51,
+-46,12,3,
+-28,-17,-29,
+-10,14,-40};
diff --git a/pjmedia/src/pjmedia-codec/speex/hexc_10_32_table.c b/pjmedia/src/pjmedia-codec/speex/hexc_10_32_table.c
new file mode 100644
index 00000000..8dd408f2
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/hexc_10_32_table.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: hexc_10_32_table.c
+   Codebook for high-band excitation in SB-CELP mode (4000 bps)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+const signed char hexc_10_32_table[320] = {
+-3, -2, -1, 0, -4, 5, 35, -40, -9, 13, 
+-44, 5, -27, -1, -7, 6, -11, 7, -8, 7, 
+19, -14, 15, -4, 9, -10, 10, -8, 10, -9, 
+-1, 1, 0, 0, 2, 5, -18, 22, -53, 50, 
+1, -23, 50, -36, 15, 3, -13, 14, -10, 6, 
+1, 5, -3, 4, -2, 5, -32, 25, 5, -2, 
+-1, -4, 1, 11, -29, 26, -6, -15, 30, -18, 
+0, 15, -17, 40, -41, 3, 9, -2, -2, 3, 
+-3, -1, -5, 2, 21, -6, -16, -21, 23, 2, 
+60, 15, 16, -16, -9, 14, 9, -1, 7, -9, 
+0, 1, 1, 0, -1, -6, 17, -28, 54, -45, 
+-1, 1, -1, -6, -6, 2, 11, 26, -29, -2, 
+46, -21, 34, 12, -23, 32, -23, 16, -10, 3, 
+66, 19, -20, 24, 7, 11, -3, 0, -3, -1, 
+-50, -46, 2, -18, -3, 4, -1, -2, 3, -3, 
+-19, 41, -36, 9, 11, -24, 21, -16, 9, -3, 
+-25, -3, 10, 18, -9, -2, -5, -1, -5, 6, 
+-4, -3, 2, -26, 21, -19, 35, -15, 7, -13, 
+17, -19, 39, -43, 48, -31, 16, -9, 7, -2, 
+-5, 3, -4, 9, -19, 27, -55, 63, -35, 10, 
+26, -44, -2, 9, 4, 1, -6, 8, -9, 5, 
+-8, -1, -3, -16, 45, -42, 5, 15, -16, 10, 
+0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+-16, 24, -55, 47, -38, 27, -19, 7, -3, 1, 
+16, 27, 20, -19, 18, 5, -7, 1, -5, 2, 
+-6, 8, -22, 0, -3, -3, 8, -1, 7, -8, 
+1, -3, 5, 0, 17, -48, 58, -52, 29, -7, 
+-2, 3, -10, 6, -26, 58, -31, 1, -6, 3, 
+93, -29, 39, 3, 17, 5, 6, -1, -1, -1, 
+27, 13, 10, 19, -7, -34, 12, 10, -4, 9, 
+-76, 9, 8, -28, -2, -11, 2, -1, 3, 1, 
+-83, 38, -39, 4, -16, -6, -2, -5, 5, -2, 
+};
diff --git a/pjmedia/src/pjmedia-codec/speex/hexc_table.c b/pjmedia/src/pjmedia-codec/speex/hexc_table.c
new file mode 100644
index 00000000..268408a8
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/hexc_table.c
@@ -0,0 +1,162 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: hexc_table.c
+   Codebook for high-band excitation in SB-CELP mode (8000 bps with sign)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+const signed char hexc_table[1024] = {
+-24, 21, -20, 5, -5, -7, 14, -10, 
+2, -27, 16, -20, 0, -32, 26, 19, 
+8, -11, -41, 31, 28, -27, -32, 34, 
+42, 34, -17, 22, -10, 13, -29, 18, 
+-12, -26, -24, 11, 22, 5, -5, -5, 
+54, -68, -43, 57, -25, 24, 4, 4, 
+26, -8, -12, -17, 54, 30, -45, 1, 
+10, -15, 18, -41, 11, 68, -67, 37, 
+-16, -24, -16, 38, -22, 6, -29, 30, 
+66, -27, 5, 7, -16, 13, 2, -12, 
+-7, -3, -20, 36, 4, -28, 9, 3, 
+32, 48, 26, 39, 3, 0, 7, -21, 
+-13, 5, -82, -7, 73, -20, 34, -9, 
+-5, 1, -1, 10, -5, -10, -1, 9, 
+1, -9, 10, 0, -14, 11, -1, -2, 
+-1, 11, 20, 96, -81, -22, -12, -9, 
+-58, 9, 24, -30, 26, -35, 27, -12, 
+13, -18, 56, -59, 15, -7, 23, -15, 
+-1, 6, -25, 14, -22, -20, 47, -11, 
+16, 2, 38, -23, -19, -30, -9, 40, 
+-11, 5, 4, -6, 8, 26, -21, -11, 
+127, 4, 1, 6, -9, 2, -7, -2, 
+-3, 7, -5, 10, -19, 7, -106, 91, 
+-3, 9, -4, 21, -8, 26, -80, 8, 
+1, -2, -10, -17, -17, -27, 32, 71, 
+6, -29, 11, -23, 54, -38, 29, -22, 
+39, 87, -31, -12, -20, 3, -2, -2, 
+2, 20, 0, -1, -35, 27, 9, -6, 
+-12, 3, -12, -6, 13, 1, 14, -22, 
+-59, -15, -17, -25, 13, -7, 7, 3, 
+0, 1, -7, 6, -3, 61, -37, -23, 
+-23, -29, 38, -31, 27, 1, -8, 2, 
+-27, 23, -26, 36, -34, 5, 24, -24, 
+-6, 7, 3, -59, 78, -62, 44, -16, 
+1, 6, 0, 17, 8, 45, 0, -110, 
+6, 14, -2, 32, -77, -56, 62, -3, 
+3, -13, 4, -16, 102, -15, -36, -1, 
+9, -113, 6, 23, 0, 9, 9, 5, 
+-8, -1, -14, 5, -12, 121, -53, -27, 
+-8, -9, 22, -13, 3, 2, -3, 1, 
+-2, -71, 95, 38, -19, 15, -16, -5, 
+71, 10, 2, -32, -13, -5, 15, -1, 
+-2, -14, -85, 30, 29, 6, 3, 2, 
+0, 0, 0, 0, 0, 0, 0, 0, 
+2, -65, -56, -9, 18, 18, 23, -14, 
+-2, 0, 12, -29, 26, -12, 1, 2, 
+-12, -64, 90, -6, 4, 1, 5, -5, 
+-110, -3, -31, 22, -29, 9, 0, 8, 
+-40, -5, 21, -5, -5, 13, 10, -18, 
+40, 1, 35, -20, 30, -28, 11, -6, 
+19, 7, 14, 18, -64, 9, -6, 16, 
+51, 68, 8, 16, 12, -8, 0, -9, 
+20, -22, 25, 7, -4, -13, 41, -35, 
+93, -18, -54, 11, -1, 1, -9, 4, 
+-66, 66, -31, 20, -22, 25, -23, 11, 
+10, 9, 19, 15, 11, -5, -31, -10, 
+-23, -28, -6, -6, -3, -4, 5, 3, 
+-28, 22, -11, -42, 25, -25, -16, 41, 
+34, 47, -6, 2, 42, -19, -22, 5, 
+-39, 32, 6, -35, 22, 17, -30, 8, 
+-26, -11, -11, 3, -12, 33, 33, -37, 
+21, -1, 6, -4, 3, 0, -5, 5, 
+12, -12, 57, 27, -61, -3, 20, -17, 
+2, 0, 4, 0, -2, -33, -58, 81, 
+-23, 39, -10, -5, 2, 6, -7, 5, 
+4, -3, -2, -13, -23, -72, 107, 15, 
+-5, 0, -7, -3, -6, 5, -4, 15, 
+47, 12, -31, 25, -16, 8, 22, -25, 
+-62, -56, -18, 14, 28, 12, 2, -11, 
+74, -66, 41, -20, -7, 16, -20, 16, 
+-8, 0, -16, 4, -19, 92, 12, -59, 
+-14, -39, 49, -25, -16, 23, -27, 19, 
+-3, -33, 19, 85, -29, 6, -7, -10, 
+16, -7, -12, 1, -6, 2, 4, -2, 
+64, 10, -25, 41, -2, -31, 15, 0, 
+110, 50, 69, 35, 28, 19, -10, 2, 
+-43, -49, -56, -15, -16, 10, 3, 12, 
+-1, -8, 1, 26, -12, -1, 7, -11, 
+-27, 41, 25, 1, -11, -18, 22, -7, 
+-1, -47, -8, 23, -3, -17, -7, 18, 
+-125, 59, -5, 3, 18, 1, 2, 3, 
+27, -35, 65, -53, 50, -46, 37, -21, 
+-28, 7, 14, -37, -5, -5, 12, 5, 
+-8, 78, -19, 21, -6, -16, 8, -7, 
+5, 2, 7, 2, 10, -6, 12, -60, 
+44, 11, -36, -32, 31, 0, 2, -2, 
+2, 1, -3, 7, -10, 17, -21, 10, 
+6, -2, 19, -2, 59, -38, -86, 38, 
+8, -41, -30, -45, -33, 7, 15, 28, 
+29, -7, 24, -40, 7, 7, 5, -2, 
+9, 24, -23, -18, 6, -29, 30, 2, 
+28, 49, -11, -46, 10, 43, -13, -9, 
+-1, -3, -7, -7, -17, -6, 97, -33, 
+-21, 3, 5, 1, 12, -43, -8, 28, 
+7, -43, -7, 17, -20, 19, -1, 2, 
+-13, 9, 54, 34, 9, -28, -11, -9, 
+-17, 110, -59, 44, -26, 0, 3, -12, 
+-47, 73, -34, -43, 38, -33, 16, -5, 
+-46, -4, -6, -2, -25, 19, -29, 28, 
+-13, 5, 14, 27, -40, -43, 4, 32, 
+-13, -2, -35, -4, 112, -42, 9, -12, 
+37, -28, 17, 14, -19, 35, -39, 23, 
+3, -14, -1, -57, -5, 94, -9, 3, 
+-39, 5, 30, -10, -32, 42, -13, -14, 
+-97, -63, 30, -9, 1, -7, 12, 5, 
+20, 17, -9, -36, -30, 25, 47, -9, 
+-15, 12, -22, 98, -8, -50, 15, -27, 
+21, -16, -11, 2, 12, -10, 10, -3, 
+33, 36, -96, 0, -17, 31, -9, 9, 
+3, -20, 13, -11, 8, -4, 10, -10, 
+9, 1, 112, -70, -27, 5, -21, 2, 
+-57, -3, -29, 10, 19, -21, 21, -10, 
+-66, -3, 91, -35, 30, -12, 0, -7, 
+59, -28, 26, 2, 14, -18, 1, 1, 
+11, 17, 20, -54, -59, 27, 4, 29, 
+32, 5, 19, 12, -4, 1, 7, -10, 
+5, -2, 10, 0, 23, -5, 28, -104, 
+46, 11, 16, 3, 29, 1, -8, -14, 
+1, 7, -50, 88, -62, 26, 8, -17, 
+-14, 50, 0, 32, -12, -3, -27, 18, 
+-8, -5, 8, 3, -20, -11, 37, -12, 
+9, 33, 46, -101, -1, -4, 1, 6, 
+-1, 28, -42, -15, 16, 5, -1, -2, 
+-55, 85, 38, -9, -4, 11, -2, -9, 
+-6, 3, -20, -10, -77, 89, 24, -3, 
+-104, -57, -26, -31, -20, -6, -9, 14, 
+20, -23, 46, -15, -31, 28, 1, -15, 
+-2, 6, -2, 31, 45, -76, 23, -25, 
+};
diff --git a/pjmedia/src/pjmedia-codec/speex/high_lsp_tables.c b/pjmedia/src/pjmedia-codec/speex/high_lsp_tables.c
new file mode 100644
index 00000000..e82e8755
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/high_lsp_tables.c
@@ -0,0 +1,163 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: high_lsp_tables.c
+   Codebooks for high-band LSPs in SB-CELP mode
+  
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.  
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+ 
+const signed char high_lsp_cdbk[512]={
+39,12,-14,-20,-29,-61,-67,-76,
+-32,-71,-67,68,77,46,34,5,
+-13,-48,-46,-72,-81,-84,-60,-58,
+-40,-28,82,93,68,45,29,3,
+-19,-47,-28,-43,-35,-30,-8,-13,
+-39,-91,-91,-123,-96,10,10,-6,
+-18,-55,-60,-91,-56,-36,-27,-16,
+-48,-75,40,28,-10,-28,35,9,
+37,19,1,-20,-31,-41,-18,-25,
+-35,-68,-80,45,27,-1,47,13,
+0,-29,-35,-57,-50,-79,-73,-38,
+-19,5,35,14,-10,-23,16,-8,
+5,-24,-40,-62,-23,-27,-22,-16,
+-18,-46,-72,-77,43,21,33,1,
+-80,-70,-70,-64,-56,-52,-39,-33,
+-31,-38,-19,-19,-15,32,33,-2,
+7,-15,-15,-24,-23,-33,-41,-56,
+-24,-57,5,89,64,41,27,5,
+-9,-47,-60,-97,-97,-124,-20,-9,
+-44,-73,31,29,-4,64,48,7,
+-35,-57,0,-3,-26,-47,-3,-6,
+-40,-76,-79,-48,12,81,55,10,
+9,-24,-43,-73,-57,-69,16,5,
+-28,-53,18,29,20,0,-4,-11,
+6,-13,23,7,-17,-35,-37,-37,
+-30,-68,-63,6,24,-9,-14,3,
+21,-13,-27,-57,-49,-80,-24,-41,
+-5,-16,-5,1,45,25,12,-7,
+3,-15,-6,-16,-15,-8,6,-13,
+-42,-81,-80,-87,14,1,-10,-3,
+-43,-69,-46,-24,-28,-29,36,6,
+-43,-56,-12,12,54,79,43,9,
+54,22,2,8,-12,-43,-46,-52,
+-38,-69,-89,-5,75,38,33,5,
+-13,-53,-62,-87,-89,-113,-99,-55,
+-34,-37,62,55,33,16,21,-2,
+-17,-46,-29,-38,-38,-48,-39,-42,
+-36,-75,-72,-88,-48,-30,21,2,
+-15,-57,-64,-98,-84,-76,25,1,
+-46,-80,-12,18,-7,3,34,6,
+38,31,23,4,-1,20,14,-15,
+-43,-78,-91,-24,14,-3,54,16,
+0,-27,-28,-44,-56,-83,-92,-89,
+-3,34,56,41,36,22,20,-8,
+-7,-35,-42,-62,-49,3,12,-10,
+-50,-87,-96,-66,92,70,38,9,
+-70,-71,-62,-42,-39,-43,-11,-7,
+-50,-79,-58,-50,-31,32,31,-6,
+-4,-25,7,-17,-38,-70,-58,-27,
+-43,-83,-28,59,36,20,31,2,
+-27,-71,-80,-109,-98,-75,-33,-32,
+-31,-2,33,15,-6,43,33,-5,
+0,-22,-10,-27,-34,-49,-11,-20,
+-41,-91,-100,-121,-39,57,41,10,
+-19,-50,-38,-59,-60,-70,-18,-20,
+-8,-31,-8,-15,1,-14,-26,-25,
+33,21,32,17,1,-19,-19,-26,
+-58,-81,-35,-22,45,30,11,-11,
+3,-26,-48,-87,-67,-83,-58,3,
+-1,-26,-20,44,10,25,39,5,
+-9,-35,-27,-38,7,10,4,-9,
+-42,-85,-102,-127,52,44,28,10,
+-47,-61,-40,-39,-17,-1,-10,-33,
+-42,-74,-48,21,-4,70,52,10};
+
+
+const signed char high_lsp_cdbk2[512]={
+-36,-62,6,-9,-10,-14,-56,23,
+1,-26,23,-48,-17,12,8,-7,
+23,29,-36,-28,-6,-29,-17,-5,
+40,23,10,10,-46,-13,36,6,
+4,-30,-29,62,32,-32,-1,22,
+-14,1,-4,-22,-45,2,54,4,
+-30,-57,-59,-12,27,-3,-31,8,
+-9,5,10,-14,32,66,19,9,
+2,-25,-37,23,-15,18,-38,-31,
+5,-9,-21,15,0,22,62,30,
+15,-12,-14,-46,77,21,33,3,
+34,29,-19,50,2,11,9,-38,
+-12,-37,62,1,-15,54,32,6,
+2,-24,20,35,-21,2,19,24,
+-13,55,4,9,39,-19,30,-1,
+-21,73,54,33,8,18,3,15,
+6,-19,-47,6,-3,-48,-50,1,
+26,20,8,-23,-50,65,-14,-55,
+-17,-31,-37,-28,53,-1,-17,-53,
+1,57,11,-8,-25,-30,-37,64,
+5,-52,-45,15,23,31,15,14,
+-25,24,33,-2,-44,-56,-18,6,
+-21,-43,4,-12,17,-37,20,-10,
+34,15,2,15,55,21,-11,-31,
+-6,46,25,16,-9,-25,-8,-62,
+28,17,20,-32,-29,26,30,25,
+-19,2,-16,-17,26,-51,2,50,
+42,19,-66,23,29,-2,3,19,
+-19,-37,32,15,6,30,-34,13,
+11,-5,40,31,10,-42,4,-9,
+26,-9,-70,17,-2,-23,20,-22,
+-55,51,-24,-31,22,-22,15,-13,
+3,-10,-28,-16,56,4,-63,11,
+-18,-15,-18,-38,-35,16,-7,34,
+-1,-21,-49,-47,9,-37,7,8,
+69,55,20,6,-33,-45,-10,-9,
+6,-9,12,71,15,-3,-42,-7,
+-24,32,-35,-2,-42,-17,-5,0,
+-2,-33,-54,13,-12,-34,47,23,
+19,55,7,-8,74,31,14,16,
+-23,-26,19,12,-18,-49,-28,-31,
+-20,2,-14,-20,-47,78,40,13,
+-23,-11,21,-6,18,1,47,5,
+38,35,32,46,22,8,13,16,
+-14,18,51,19,40,39,11,-26,
+-1,-17,47,2,-53,-15,31,-22,
+38,21,-15,-16,5,-33,53,15,
+-38,86,11,-3,-24,49,13,-4,
+-11,-18,28,20,-12,-27,-26,35,
+-25,-35,-3,-20,-61,30,10,-55,
+-12,-22,-52,-54,-14,19,-32,-12,
+45,15,-8,-48,-9,11,-32,8,
+-16,-34,-13,51,18,38,-2,-32,
+-17,22,-2,-18,-28,-70,59,27,
+-28,-19,-10,-20,-9,-9,-8,-21,
+21,-8,35,-2,45,-3,-9,12,
+0,30,7,-39,43,27,-38,-91,
+30,26,19,-55,-4,63,14,-17,
+13,9,13,2,7,4,6,61,
+72,-1,-17,29,-1,-22,-17,8,
+-28,-37,63,44,41,3,2,14,
+9,-6,75,-8,-7,-12,-15,-12,
+13,9,-4,30,-22,-65,15,0,
+-45,4,-4,1,5,22,11,23};
diff --git a/pjmedia/src/pjmedia-codec/speex/lpc.h b/pjmedia/src/pjmedia-codec/speex/lpc.h
new file mode 100644
index 00000000..d64df967
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lpc.h
@@ -0,0 +1,53 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file lpc.h
+   @brief Functions for LPC (Linear Prediction Coefficients) analysis
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef LPC_H
+#define LPC_H
+
+#include "misc.h"
+
+void _spx_autocorr(
+              const spx_word16_t * x,   /*  in: [0...n-1] samples x   */
+              spx_word16_t *ac,   /* out: [0...lag-1] ac values */
+              int lag, int   n);
+
+spx_word32_t                      /* returns minimum mean square error    */
+_spx_lpc(
+    spx_coef_t       * lpc, /*      [0...p-1] LPC coefficients      */
+    const spx_word16_t * ac,  /*  in: [0...p] autocorrelation values  */
+    int p
+    );
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/lpc_bfin.h b/pjmedia/src/pjmedia-codec/speex/lpc_bfin.h
new file mode 100644
index 00000000..7310ffba
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lpc_bfin.h
@@ -0,0 +1,131 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file lpc_bfin.h
+   @author Jean-Marc Valin 
+   @brief Functions for LPC (Linear Prediction Coefficients) analysis (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_SPEEX_AUTOCORR
+void _spx_autocorr(
+const spx_word16_t *x,   /*  in: [0...n-1] samples x   */
+spx_word16_t       *ac,  /* out: [0...lag-1] ac values */
+int          lag, 
+int          n
+                  )
+{
+   spx_word32_t d;
+   const spx_word16_t *xs;
+   int i, j;
+   spx_word32_t ac0=1;
+   spx_word32_t ac32[11], *ac32top;
+   int shift, ac_shift;
+   ac32top = ac32+lag-1;
+   int lag_1, N_lag;
+   int nshift;
+   lag_1 = lag-1;
+   N_lag = n-lag_1;
+   for (j=0;j<n;j++)
+      ac0 = ADD32(ac0,SHR32(MULT16_16(x[j],x[j]),8));
+   ac0 = ADD32(ac0,n);
+   shift = 8;
+   while (shift && ac0<0x40000000)
+   {
+      shift--;
+      ac0 <<= 1;
+   }
+   ac_shift = 18;
+   while (ac_shift && ac0<0x40000000)
+   {
+      ac_shift--;
+      ac0 <<= 1;
+   }
+   
+   xs = x+lag-1;
+   nshift = -shift;
+   __asm__ __volatile__ 
+   (
+         "P2 = %0;\n\t"
+         "I0 = P2;\n\t" /* x in I0 */
+         "B0 = P2;\n\t" /* x in B0 */
+         "R0 = %3;\n\t" /* len in R0 */
+         "P3 = %3;\n\t" /* len in R0 */
+         "P4 = %4;\n\t" /* nb_pitch in R0 */
+         "R1 = R0 << 1;\n\t" /* number of bytes in x */
+         "L0 = R1;\n\t"
+         "P0 = %1;\n\t"
+         "P1 = %2;\n\t"
+         "B1 = P1;\n\t"
+         "R4 = %5;\n\t"
+         "L1 = 0;\n\t" /*Disable looping on I1*/
+
+         "r0 = [I0++];\n\t"
+         "R2 = 0;R3=0;"
+         "LOOP pitch%= LC0 = P4 >> 1;\n\t"
+         "LOOP_BEGIN pitch%=;\n\t"
+            "I1 = P0;\n\t"
+            "A1 = A0 = 0;\n\t"
+            "R1 = [I1++];\n\t"
+            "LOOP inner_prod%= LC1 = P3 >> 1;\n\t"
+            "LOOP_BEGIN inner_prod%=;\n\t"
+               "A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t"
+               "A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R1.H = W[I1++] || R0 = [I0++];\n\t"
+            "LOOP_END inner_prod%=;\n\t"
+            "A0 = ASHIFT A0 by R4.L;\n\t"
+            "A1 = ASHIFT A1 by R4.L;\n\t"
+   
+            "R2 = A0, R3 = A1;\n\t"
+            "[P1--] = R2;\n\t"
+            "[P1--] = R3;\n\t"
+            "P0 += 4;\n\t"
+         "LOOP_END pitch%=;\n\t"
+   : : "m" (xs), "m" (x), "m" (ac32top), "m" (N_lag), "m" (lag_1), "m" (nshift)
+   : "A0", "A1", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "R3", "R4", "I0", "I1", "L0", "L1", "B0", "B1", "memory"
+   );
+   d=0;
+   for (j=0;j<n;j++)
+   {
+      d = ADD32(d,SHR32(MULT16_16(x[j],x[j]), shift));
+   }
+   ac32[0] = d;
+   
+   for (i=0;i<lag;i++)
+   {
+      d=0;
+      for (j=i;j<lag_1;j++)
+      {
+         d = ADD32(d,SHR32(MULT16_16(x[j],x[j-i]), shift));
+      }
+      if (i)
+         ac32[i] += d;
+      ac[i] = SHR32(ac32[i], ac_shift);
+   }
+}
+
diff --git a/pjmedia/src/pjmedia-codec/speex/lpc_spx.c b/pjmedia/src/pjmedia-codec/speex/lpc_spx.c
new file mode 100644
index 00000000..c465faea
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lpc_spx.c
@@ -0,0 +1,201 @@
+/*
+  Copyright 1992, 1993, 1994 by Jutta Degener and Carsten Bormann,
+  Technische Universitaet Berlin
+
+  Any use of this software is permitted provided that this notice is not
+  removed and that neither the authors nor the Technische Universitaet Berlin
+  are deemed to have made any representations as to the suitability of this
+  software for any purpose nor are held responsible for any defects of
+  this software.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
+
+  As a matter of courtesy, the authors request to be informed about uses
+  this software has found, about bugs in this software, and about any
+  improvements that may be of general interest.
+
+  Berlin, 28.11.1994
+  Jutta Degener
+  Carsten Bormann
+
+
+   Code modified by Jean-Marc Valin
+
+   Speex License:
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "lpc.h"
+
+#ifdef BFIN_ASM
+#include "lpc_bfin.h"
+#endif
+
+/* LPC analysis
+ *
+ * The next two functions calculate linear prediction coefficients
+ * and/or the related reflection coefficients from the first P_MAX+1
+ * values of the autocorrelation function.
+ */
+
+/* Invented by N. Levinson in 1947, modified by J. Durbin in 1959.
+ */
+
+/* returns minimum mean square error    */
+spx_word32_t _spx_lpc(
+spx_coef_t       *lpc, /* out: [0...p-1] LPC coefficients      */
+const spx_word16_t *ac,  /* in:  [0...p] autocorrelation values  */
+int          p
+)
+{
+   int i, j;  
+   spx_word16_t r;
+   spx_word16_t error = ac[0];
+
+   if (ac[0] == 0)
+   {
+      for (i = 0; i < p; i++)
+         lpc[i] = 0;
+      return 0;
+   }
+
+   for (i = 0; i < p; i++) {
+
+      /* Sum up this iteration's reflection coefficient */
+      spx_word32_t rr = NEG32(SHL32(EXTEND32(ac[i + 1]),13));
+      for (j = 0; j < i; j++) 
+         rr = SUB32(rr,MULT16_16(lpc[j],ac[i - j]));
+#ifdef FIXED_POINT
+      r = DIV32_16(rr,ADD16(error,16));
+#else
+      r = rr/(error+.003*ac[0]);
+#endif
+      /*  Update LPC coefficients and total error */
+      lpc[i] = r;
+      for (j = 0; j < i>>1; j++) 
+      {
+         spx_word16_t tmp  = lpc[j];
+         lpc[j]     = MAC16_16_Q13(lpc[j],r,lpc[i-1-j]);
+         lpc[i-1-j] = MAC16_16_Q13(lpc[i-1-j],r,tmp);
+      }
+      if (i & 1) 
+         lpc[j] = MAC16_16_Q13(lpc[j],lpc[j],r);
+
+      error = SUB16(error,MULT16_16_Q13(r,MULT16_16_Q13(error,r)));
+   }
+   return error;
+}
+
+
+#ifdef FIXED_POINT
+
+/* Compute the autocorrelation
+ *                      ,--,
+ *              ac(i) = >  x(n) * x(n-i)  for all n
+ *                      `--'
+ * for lags between 0 and lag-1, and x == 0 outside 0...n-1
+ */
+
+#ifndef OVERRIDE_SPEEX_AUTOCORR
+void _spx_autocorr(
+const spx_word16_t *x,   /*  in: [0...n-1] samples x   */
+spx_word16_t       *ac,  /* out: [0...lag-1] ac values */
+int          lag, 
+int          n
+)
+{
+   spx_word32_t d;
+   int i, j;
+   spx_word32_t ac0=1;
+   int shift, ac_shift;
+   
+   for (j=0;j<n;j++)
+      ac0 = ADD32(ac0,SHR32(MULT16_16(x[j],x[j]),8));
+   ac0 = ADD32(ac0,n);
+   shift = 8;
+   while (shift && ac0<0x40000000)
+   {
+      shift--;
+      ac0 <<= 1;
+   }
+   ac_shift = 18;
+   while (ac_shift && ac0<0x40000000)
+   {
+      ac_shift--;
+      ac0 <<= 1;
+   }
+   
+   
+   for (i=0;i<lag;i++)
+   {
+      d=0;
+      for (j=i;j<n;j++)
+      {
+         d = ADD32(d,SHR32(MULT16_16(x[j],x[j-i]), shift));
+      }
+      
+      ac[i] = SHR32(d, ac_shift);
+   }
+}
+#endif
+
+
+#else
+
+
+
+/* Compute the autocorrelation
+ *                      ,--,
+ *              ac(i) = >  x(n) * x(n-i)  for all n
+ *                      `--'
+ * for lags between 0 and lag-1, and x == 0 outside 0...n-1
+ */
+void _spx_autocorr(
+const spx_word16_t *x,   /*  in: [0...n-1] samples x   */
+float       *ac,  /* out: [0...lag-1] ac values */
+int          lag, 
+int          n
+)
+{
+   float d;
+   int i;
+   while (lag--) 
+   {
+      for (i = lag, d = 0; i < n; i++) 
+         d += x[i] * x[i-lag];
+      ac[lag] = d;
+   }
+   ac[0] += 10;
+}
+
+#endif
+
+
diff --git a/pjmedia/src/pjmedia-codec/speex/lsp.c b/pjmedia/src/pjmedia-codec/speex/lsp.c
new file mode 100644
index 00000000..f4350aee
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lsp.c
@@ -0,0 +1,583 @@
+/*---------------------------------------------------------------------------*\
+Original copyright
+	FILE........: AKSLSPD.C
+	TYPE........: Turbo C
+	COMPANY.....: Voicetronix
+	AUTHOR......: David Rowe
+	DATE CREATED: 24/2/93
+
+Heavily modified by Jean-Marc Valin (fixed-point, optimizations, 
+                                     additional functions, ...)
+
+   This file contains functions for converting Linear Prediction
+   Coefficients (LPC) to Line Spectral Pair (LSP) and back. Note that the
+   LSP coefficients are not in radians format but in the x domain of the
+   unit circle.
+
+   Speex License:
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "lsp.h"
+#include "stack_alloc.h"
+#include "math_approx.h"
+
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifdef FIXED_POINT
+
+
+
+#define FREQ_SCALE 16384
+
+/*#define ANGLE2X(a) (32768*cos(((a)/8192.)))*/
+#define ANGLE2X(a) (SHL16(spx_cos(a),2))
+
+/*#define X2ANGLE(x) (acos(.00006103515625*(x))*LSP_SCALING)*/
+#define X2ANGLE(x) (spx_acos(x))
+
+#else
+
+/*#define C1 0.99940307
+#define C2 -0.49558072
+#define C3 0.03679168*/
+
+#define FREQ_SCALE 1.
+#define ANGLE2X(a) (spx_cos(a))
+#define X2ANGLE(x) (acos(x))
+
+#endif
+
+
+/*---------------------------------------------------------------------------*\
+
+	FUNCTION....: cheb_poly_eva()
+
+	AUTHOR......: David Rowe
+	DATE CREATED: 24/2/93
+
+    This function evaluates a series of Chebyshev polynomials
+
+\*---------------------------------------------------------------------------*/
+
+#ifdef FIXED_POINT
+
+static inline spx_word32_t cheb_poly_eva(spx_word32_t *coef,spx_word16_t x,int m,char *stack)
+/*  float coef[]  	coefficients of the polynomial to be evaluated 	*/
+/*  float x   		the point where polynomial is to be evaluated 	*/
+/*  int m 		order of the polynomial 			*/
+{
+    int i;
+    VARDECL(spx_word16_t *T);
+    spx_word32_t sum;
+    int m2=m>>1;
+    VARDECL(spx_word16_t *coefn);
+
+    /*Prevents overflows*/
+    if (x>16383)
+       x = 16383;
+    if (x<-16383)
+       x = -16383;
+
+    /* Allocate memory for Chebyshev series formulation */
+    ALLOC(T, m2+1, spx_word16_t);
+    ALLOC(coefn, m2+1, spx_word16_t);
+
+    for (i=0;i<m2+1;i++)
+    {
+       coefn[i] = coef[i];
+       /*printf ("%f ", coef[i]);*/
+    }
+    /*printf ("\n");*/
+
+    /* Initialise values */
+    T[0]=16384;
+    T[1]=x;
+
+    /* Evaluate Chebyshev series formulation using iterative approach  */
+    /* Evaluate polynomial and return value also free memory space */
+    sum = ADD32(EXTEND32(coefn[m2]), EXTEND32(MULT16_16_P14(coefn[m2-1],x)));
+    /*x *= 2;*/
+    for(i=2;i<=m2;i++)
+    {
+       T[i] = SUB16(MULT16_16_Q13(x,T[i-1]), T[i-2]);
+       sum = ADD32(sum, EXTEND32(MULT16_16_P14(coefn[m2-i],T[i])));
+       /*printf ("%f ", sum);*/
+    }
+    
+    /*printf ("\n");*/
+    return sum;
+}
+#else
+static float cheb_poly_eva(spx_word32_t *coef,float x,int m,char *stack)
+/*  float coef[]  	coefficients of the polynomial to be evaluated 	*/
+/*  float x   		the point where polynomial is to be evaluated 	*/
+/*  int m 		order of the polynomial 			*/
+{
+    int i;
+    VARDECL(float *T);
+    float sum;
+    int m2=m>>1;
+
+    /* Allocate memory for Chebyshev series formulation */
+    ALLOC(T, m2+1, float);
+
+    /* Initialise values */
+    T[0]=1;
+    T[1]=x;
+
+    /* Evaluate Chebyshev series formulation using iterative approach  */
+    /* Evaluate polynomial and return value also free memory space */
+    sum = coef[m2] + coef[m2-1]*x;
+    x *= 2;
+    for(i=2;i<=m2;i++)
+    {
+       T[i] = x*T[i-1] - T[i-2];
+       sum += coef[m2-i] * T[i];
+    }
+    
+    return sum;
+}
+#endif
+
+/*---------------------------------------------------------------------------*\
+
+	FUNCTION....: lpc_to_lsp()
+
+	AUTHOR......: David Rowe
+	DATE CREATED: 24/2/93
+
+    This function converts LPC coefficients to LSP
+    coefficients.
+
+\*---------------------------------------------------------------------------*/
+
+#ifdef FIXED_POINT
+#define SIGN_CHANGE(a,b) (((a)&0x70000000)^((b)&0x70000000)||(b==0))
+#else
+#define SIGN_CHANGE(a,b) (((a)*(b))<0.0)
+#endif
+
+
+int lpc_to_lsp (spx_coef_t *a,int lpcrdr,spx_lsp_t *freq,int nb,spx_word16_t delta, char *stack)
+/*  float *a 		     	lpc coefficients			*/
+/*  int lpcrdr			order of LPC coefficients (10) 		*/
+/*  float *freq 	      	LSP frequencies in the x domain       	*/
+/*  int nb			number of sub-intervals (4) 		*/
+/*  float delta			grid spacing interval (0.02) 		*/
+
+
+{
+    spx_word16_t temp_xr,xl,xr,xm=0;
+    spx_word32_t psuml,psumr,psumm,temp_psumr/*,temp_qsumr*/;
+    int i,j,m,flag,k;
+    VARDECL(spx_word32_t *Q);                 	/* ptrs for memory allocation 		*/
+    VARDECL(spx_word32_t *P);
+    spx_word32_t *px;                	/* ptrs of respective P'(z) & Q'(z)	*/
+    spx_word32_t *qx;
+    spx_word32_t *p;
+    spx_word32_t *q;
+    spx_word32_t *pt;                	/* ptr used for cheb_poly_eval()
+				whether P' or Q' 			*/
+    int roots=0;              	/* DR 8/2/94: number of roots found 	*/
+    flag = 1;                	/*  program is searching for a root when,
+				1 else has found one 			*/
+    m = lpcrdr/2;            	/* order of P'(z) & Q'(z) polynomials 	*/
+
+    /* Allocate memory space for polynomials */
+    ALLOC(Q, (m+1), spx_word32_t);
+    ALLOC(P, (m+1), spx_word32_t);
+
+    /* determine P'(z)'s and Q'(z)'s coefficients where
+      P'(z) = P(z)/(1 + z^(-1)) and Q'(z) = Q(z)/(1-z^(-1)) */
+
+    px = P;                      /* initialise ptrs 			*/
+    qx = Q;
+    p = px;
+    q = qx;
+
+#ifdef FIXED_POINT
+    *px++ = LPC_SCALING;
+    *qx++ = LPC_SCALING;
+    for(i=0;i<m;i++){
+       *px++ = SUB32(ADD32(EXTEND32(a[i]),EXTEND32(a[lpcrdr-i-1])), *p++);
+       *qx++ = ADD32(SUB32(EXTEND32(a[i]),EXTEND32(a[lpcrdr-i-1])), *q++);
+    }
+    px = P;
+    qx = Q;
+    for(i=0;i<m;i++)
+    {
+       /*if (fabs(*px)>=32768)
+          speex_warning_int("px", *px);
+       if (fabs(*qx)>=32768)
+       speex_warning_int("qx", *qx);*/
+       *px = PSHR32(*px,2);
+       *qx = PSHR32(*qx,2);
+       px++;
+       qx++;
+    }
+    /* The reason for this lies in the way cheb_poly_eva() is implemented for fixed-point */
+    P[m] = PSHR32(P[m],3);
+    Q[m] = PSHR32(Q[m],3);
+#else
+    *px++ = LPC_SCALING;
+    *qx++ = LPC_SCALING;
+    for(i=0;i<m;i++){
+       *px++ = (a[i]+a[lpcrdr-1-i]) - *p++;
+       *qx++ = (a[i]-a[lpcrdr-1-i]) + *q++;
+    }
+    px = P;
+    qx = Q;
+    for(i=0;i<m;i++){
+       *px = 2**px;
+       *qx = 2**qx;
+       px++;
+       qx++;
+    }
+#endif
+
+    px = P;             	/* re-initialise ptrs 			*/
+    qx = Q;
+
+    /* Search for a zero in P'(z) polynomial first and then alternate to Q'(z).
+    Keep alternating between the two polynomials as each zero is found 	*/
+
+    xr = 0;             	/* initialise xr to zero 		*/
+    xl = FREQ_SCALE;               	/* start at point xl = 1 		*/
+
+
+    for(j=0;j<lpcrdr;j++){
+	if(j&1)            	/* determines whether P' or Q' is eval. */
+	    pt = qx;
+	else
+	    pt = px;
+
+	psuml = cheb_poly_eva(pt,xl,lpcrdr,stack);	/* evals poly. at xl 	*/
+	flag = 1;
+	while(flag && (xr >= -FREQ_SCALE)){
+           spx_word16_t dd;
+           /* Modified by JMV to provide smaller steps around x=+-1 */
+#ifdef FIXED_POINT
+           dd = MULT16_16_Q15(delta,SUB16(FREQ_SCALE, MULT16_16_Q14(MULT16_16_Q14(xl,xl),14000)));
+           if (psuml<512 && psuml>-512)
+              dd = PSHR16(dd,1);
+#else
+           dd=delta*(1-.9*xl*xl);
+           if (fabs(psuml)<.2)
+              dd *= .5;
+#endif
+           xr = SUB16(xl, dd);                        	/* interval spacing 	*/
+	    psumr = cheb_poly_eva(pt,xr,lpcrdr,stack);/* poly(xl-delta_x) 	*/
+	    temp_psumr = psumr;
+	    temp_xr = xr;
+
+    /* if no sign change increment xr and re-evaluate poly(xr). Repeat til
+    sign change.
+    if a sign change has occurred the interval is bisected and then
+    checked again for a sign change which determines in which
+    interval the zero lies in.
+    If there is no sign change between poly(xm) and poly(xl) set interval
+    between xm and xr else set interval between xl and xr and repeat till
+    root is located within the specified limits 			*/
+
+	    if(SIGN_CHANGE(psumr,psuml))
+            {
+		roots++;
+
+		psumm=psuml;
+		for(k=0;k<=nb;k++){
+#ifdef FIXED_POINT
+		    xm = ADD16(PSHR16(xl,1),PSHR16(xr,1));        	/* bisect the interval 	*/
+#else
+                    xm = .5*(xl+xr);        	/* bisect the interval 	*/
+#endif
+		    psumm=cheb_poly_eva(pt,xm,lpcrdr,stack);
+		    /*if(psumm*psuml>0.)*/
+		    if(!SIGN_CHANGE(psumm,psuml))
+                    {
+			psuml=psumm;
+			xl=xm;
+		    } else {
+			psumr=psumm;
+			xr=xm;
+		    }
+		}
+
+	       /* once zero is found, reset initial interval to xr 	*/
+	       freq[j] = X2ANGLE(xm);
+	       xl = xm;
+	       flag = 0;       		/* reset flag for next search 	*/
+	    }
+	    else{
+		psuml=temp_psumr;
+		xl=temp_xr;
+	    }
+	}
+    }
+    return(roots);
+}
+
+
+/*---------------------------------------------------------------------------*\
+
+	FUNCTION....: lsp_to_lpc()
+
+	AUTHOR......: David Rowe
+	DATE CREATED: 24/2/93
+
+    lsp_to_lpc: This function converts LSP coefficients to LPC
+    coefficients.
+
+\*---------------------------------------------------------------------------*/
+
+#ifdef FIXED_POINT
+
+void lsp_to_lpc(spx_lsp_t *freq,spx_coef_t *ak,int lpcrdr, char *stack)
+/*  float *freq 	array of LSP frequencies in the x domain	*/
+/*  float *ak 		array of LPC coefficients 			*/
+/*  int lpcrdr  	order of LPC coefficients 			*/
+
+
+{
+    int i,j;
+    spx_word32_t xout1,xout2,xin1,xin2;
+    VARDECL(spx_word32_t *Wp);
+    spx_word32_t *pw,*n1,*n2,*n3,*n4=NULL;
+    VARDECL(spx_word16_t *freqn);
+    int m = lpcrdr>>1;
+    
+    ALLOC(freqn, lpcrdr, spx_word16_t);
+    for (i=0;i<lpcrdr;i++)
+       freqn[i] = ANGLE2X(freq[i]);
+
+    ALLOC(Wp, 4*m+2, spx_word32_t);
+    pw = Wp;
+
+
+    /* initialise contents of array */
+
+    for(i=0;i<=4*m+1;i++){       	/* set contents of buffer to 0 */
+	*pw++ = 0;
+    }
+
+    /* Set pointers up */
+
+    pw = Wp;
+    xin1 = 1048576;
+    xin2 = 1048576;
+
+    /* reconstruct P(z) and Q(z) by  cascading second order
+      polynomials in form 1 - 2xz(-1) +z(-2), where x is the
+      LSP coefficient */
+
+    for(j=0;j<=lpcrdr;j++){
+       spx_word16_t *fr=freqn;
+	for(i=0;i<m;i++){
+	    n1 = pw+(i<<2);
+	    n2 = n1 + 1;
+	    n3 = n2 + 1;
+	    n4 = n3 + 1;
+	    xout1 = ADD32(SUB32(xin1, MULT16_32_Q14(*fr,*n1)), *n2);
+            fr++;
+            xout2 = ADD32(SUB32(xin2, MULT16_32_Q14(*fr,*n3)), *n4);
+            fr++;
+	    *n2 = *n1;
+	    *n4 = *n3;
+	    *n1 = xin1;
+	    *n3 = xin2;
+	    xin1 = xout1;
+	    xin2 = xout2;
+	}
+	xout1 = xin1 + *(n4+1);
+	xout2 = xin2 - *(n4+2);
+        /* FIXME: perhaps apply bandwidth expansion in case of overflow? */
+	if (j>0)
+	{
+        if (xout1 + xout2>SHL32(EXTEND32(32766),8))
+           ak[j-1] = 32767;
+        else if (xout1 + xout2 < -SHL32(EXTEND32(32766),8))
+           ak[j-1] = -32767;
+        else
+           ak[j-1] = EXTRACT16(PSHR32(ADD32(xout1,xout2),8));
+	} else {/*speex_warning_int("ak[0] = ", EXTRACT16(PSHR32(ADD32(xout1,xout2),8)));*/}
+	*(n4+1) = xin1;
+	*(n4+2) = xin2;
+
+	xin1 = 0;
+	xin2 = 0;
+    }
+}
+#else
+
+void lsp_to_lpc(spx_lsp_t *freq,spx_coef_t *ak,int lpcrdr, char *stack)
+/*  float *freq 	array of LSP frequencies in the x domain	*/
+/*  float *ak 		array of LPC coefficients 			*/
+/*  int lpcrdr  	order of LPC coefficients 			*/
+
+
+{
+    int i,j;
+    float xout1,xout2,xin1,xin2;
+    VARDECL(float *Wp);
+    float *pw,*n1,*n2,*n3,*n4=NULL;
+    VARDECL(float *x_freq);
+    int m = lpcrdr>>1;
+
+    ALLOC(Wp, 4*m+2, float);
+    pw = Wp;
+
+    /* initialise contents of array */
+
+    for(i=0;i<=4*m+1;i++){       	/* set contents of buffer to 0 */
+	*pw++ = 0.0;
+    }
+
+    /* Set pointers up */
+
+    pw = Wp;
+    xin1 = 1.0;
+    xin2 = 1.0;
+
+    ALLOC(x_freq, lpcrdr, float);
+    for (i=0;i<lpcrdr;i++)
+       x_freq[i] = ANGLE2X(freq[i]);
+
+    /* reconstruct P(z) and Q(z) by  cascading second order
+      polynomials in form 1 - 2xz(-1) +z(-2), where x is the
+      LSP coefficient */
+
+    for(j=0;j<=lpcrdr;j++){
+       int i2=0;
+	for(i=0;i<m;i++,i2+=2){
+	    n1 = pw+(i*4);
+	    n2 = n1 + 1;
+	    n3 = n2 + 1;
+	    n4 = n3 + 1;
+	    xout1 = xin1 - 2.f*x_freq[i2] * *n1 + *n2;
+	    xout2 = xin2 - 2.f*x_freq[i2+1] * *n3 + *n4;
+	    *n2 = *n1;
+	    *n4 = *n3;
+	    *n1 = xin1;
+	    *n3 = xin2;
+	    xin1 = xout1;
+	    xin2 = xout2;
+	}
+	xout1 = xin1 + *(n4+1);
+	xout2 = xin2 - *(n4+2);
+	if (j>0)
+	   ak[j-1] = (xout1 + xout2)*0.5f;
+	*(n4+1) = xin1;
+	*(n4+2) = xin2;
+
+	xin1 = 0.0;
+	xin2 = 0.0;
+    }
+
+}
+#endif
+
+
+#ifdef FIXED_POINT
+
+/*Makes sure the LSPs are stable*/
+void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin)
+{
+   int i;
+   spx_word16_t m = margin;
+   spx_word16_t m2 = 25736-margin;
+  
+   if (lsp[0]<m)
+      lsp[0]=m;
+   if (lsp[len-1]>m2)
+      lsp[len-1]=m2;
+   for (i=1;i<len-1;i++)
+   {
+      if (lsp[i]<lsp[i-1]+m)
+         lsp[i]=lsp[i-1]+m;
+
+      if (lsp[i]>lsp[i+1]-m)
+         lsp[i]= SHR16(lsp[i],1) + SHR16(lsp[i+1]-m,1);
+   }
+}
+
+
+void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes)
+{
+   int i;
+   spx_word16_t tmp = DIV32_16(SHL32(EXTEND32(1 + subframe),14),nb_subframes);
+   spx_word16_t tmp2 = 16384-tmp;
+   for (i=0;i<len;i++)
+   {
+      interp_lsp[i] = MULT16_16_P14(tmp2,old_lsp[i]) + MULT16_16_P14(tmp,new_lsp[i]);
+   }
+}
+
+#else
+
+/*Makes sure the LSPs are stable*/
+void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin)
+{
+   int i;
+   if (lsp[0]<LSP_SCALING*margin)
+      lsp[0]=LSP_SCALING*margin;
+   if (lsp[len-1]>LSP_SCALING*(M_PI-margin))
+      lsp[len-1]=LSP_SCALING*(M_PI-margin);
+   for (i=1;i<len-1;i++)
+   {
+      if (lsp[i]<lsp[i-1]+LSP_SCALING*margin)
+         lsp[i]=lsp[i-1]+LSP_SCALING*margin;
+
+      if (lsp[i]>lsp[i+1]-LSP_SCALING*margin)
+         lsp[i]= .5f* (lsp[i] + lsp[i+1]-LSP_SCALING*margin);
+   }
+}
+
+
+void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes)
+{
+   int i;
+   float tmp = (1.0f + subframe)/nb_subframes;
+   for (i=0;i<len;i++)
+   {
+      interp_lsp[i] = (1-tmp)*old_lsp[i] + tmp*new_lsp[i];
+   }
+}
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/lsp.h b/pjmedia/src/pjmedia-codec/speex/lsp.h
new file mode 100644
index 00000000..6266f42f
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lsp.h
@@ -0,0 +1,64 @@
+/*---------------------------------------------------------------------------*\
+Original Copyright
+	FILE........: AK2LSPD.H
+	TYPE........: Turbo C header file
+	COMPANY.....: Voicetronix
+	AUTHOR......: James Whitehall
+	DATE CREATED: 21/11/95
+
+Modified by Jean-Marc Valin
+
+    This file contains functions for converting Linear Prediction
+    Coefficients (LPC) to Line Spectral Pair (LSP) and back. Note that the
+    LSP coefficients are not in radians format but in the x domain of the
+    unit circle.
+
+\*---------------------------------------------------------------------------*/
+/**
+   @file lsp.h
+   @brief Line Spectral Pair (LSP) functions.
+*/
+/* Speex License:
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __AK2LSPD__
+#define __AK2LSPD__
+
+#include "misc.h"
+
+int lpc_to_lsp (spx_coef_t *a, int lpcrdr, spx_lsp_t *freq, int nb, spx_word16_t delta, char *stack);
+void lsp_to_lpc(spx_lsp_t *freq, spx_coef_t *ak, int lpcrdr, char *stack);
+
+/*Added by JMV*/
+void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin);
+
+void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes);
+
+#endif	/* __AK2LSPD__ */
diff --git a/pjmedia/src/pjmedia-codec/speex/lsp_tables_nb.c b/pjmedia/src/pjmedia-codec/speex/lsp_tables_nb.c
new file mode 100644
index 00000000..16f2e1b6
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/lsp_tables_nb.c
@@ -0,0 +1,360 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: lsp_tables_nb.c
+   Codebooks for LSPs in narrowband CELP mode
+  
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.  
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+const signed char cdbk_nb[640]={
+30,19,38,34,40,32,46,43,58,43,
+5,-18,-25,-40,-33,-55,-52,20,34,28,
+-20,-63,-97,-92,61,53,47,49,53,75,
+-14,-53,-77,-79,0,-3,-5,19,22,26,
+-9,-53,-55,66,90,72,85,68,74,52,
+-4,-41,-58,-31,-18,-31,27,32,30,18,
+24,3,8,5,-12,-3,26,28,74,63,
+-2,-39,-67,-77,-106,-74,59,59,73,65,
+44,40,71,72,82,83,98,88,89,60,
+-6,-31,-47,-48,-13,-39,-9,7,2,79,
+-1,-39,-60,-17,87,81,65,50,45,19,
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+10,-31,-28,39,24,13,23,5,56,45,
+29,10,-5,-13,-11,-35,-18,-8,-10,-8,
+-25,-71,-77,-21,2,16,50,63,87,87,
+5,-32,-40,-51,-68,0,12,6,54,34,
+5,-12,32,52,68,64,69,59,65,45,
+14,-16,-31,-40,-65,-67,41,49,47,37,
+-11,-52,-75,-84,-4,57,48,42,42,33,
+-11,-51,-68,-6,13,0,8,-8,26,32,
+-23,-53,0,36,56,76,97,105,111,97,
+-1,-28,-39,-40,-43,-54,-44,-40,-18,35,
+16,-20,-19,-28,-42,29,47,38,74,45,
+3,-29,-48,-62,-80,-104,-33,56,59,59,
+10,17,46,72,84,101,117,123,123,106,
+-7,-33,-49,-51,-70,-67,-27,-31,70,67,
+-16,-62,-85,-20,82,71,86,80,85,74,
+-19,-58,-75,-45,-29,-33,-18,-25,45,57,
+-12,-42,-5,12,28,36,52,64,81,82,
+13,-9,-27,-28,22,3,2,22,26,6,
+-6,-44,-51,2,15,10,48,43,49,34,
+-19,-62,-84,-89,-102,-24,8,17,61,68,
+39,24,23,19,16,-5,12,15,27,15,
+-8,-44,-49,-60,-18,-32,-28,52,54,62,
+-8,-48,-77,-70,66,101,83,63,61,37,
+-12,-50,-75,-64,33,17,13,25,15,77,
+1,-42,-29,72,64,46,49,31,61,44,
+-8,-47,-54,-46,-30,19,20,-1,-16,0,
+16,-12,-18,-9,-26,-27,-10,-22,53,45,
+-10,-47,-75,-82,-105,-109,8,25,49,77,
+50,65,114,117,124,118,115,96,90,61,
+-9,-45,-63,-60,-75,-57,8,11,20,29,
+0,-35,-49,-43,40,47,35,40,55,38,
+-24,-76,-103,-112,-27,3,23,34,52,75,
+8,-29,-43,12,63,38,35,29,24,8,
+25,11,1,-15,-18,-43,-7,37,40,21,
+-20,-56,-19,-19,-4,-2,11,29,51,63,
+-2,-44,-62,-75,-89,30,57,51,74,51,
+50,46,68,64,65,52,63,55,65,43,
+18,-9,-26,-35,-55,-69,3,6,8,17,
+-15,-61,-86,-97,1,86,93,74,78,67,
+-1,-38,-66,-48,48,39,29,25,17,-1,
+13,13,29,39,50,51,69,82,97,98,
+-2,-36,-46,-27,-16,-30,-13,-4,-7,-4,
+25,-5,-11,-6,-25,-21,33,12,31,29,
+-8,-38,-52,-63,-68,-89,-33,-1,10,74,
+-2,-15,59,91,105,105,101,87,84,62,
+-7,-33,-50,-35,-54,-47,25,17,82,81,
+-13,-56,-83,21,58,31,42,25,72,65,
+-24,-66,-91,-56,9,-2,21,10,69,75,
+2,-24,11,22,25,28,38,34,48,33,
+7,-29,-26,17,15,-1,14,0,-2,0,
+-6,-41,-67,6,-2,-9,19,2,85,74,
+-22,-67,-84,-71,-50,3,11,-9,2,62};
+
+const signed char cdbk_nb_low1[320]={
+-34,-52,-15,45,2,
+23,21,52,24,-33,
+-9,-1,9,-44,-41,
+-13,-17,44,22,-17,
+-6,-4,-1,22,38,
+26,16,2,50,27,
+-35,-34,-9,-41,6,
+0,-16,-34,51,8,
+-14,-31,-49,15,-33,
+45,49,33,-11,-37,
+-62,-54,45,11,-5,
+-72,11,-1,-12,-11,
+24,27,-11,-43,46,
+43,33,-12,-9,-1,
+1,-4,-23,-57,-71,
+11,8,16,17,-8,
+-20,-31,-41,53,48,
+-16,3,65,-24,-8,
+-23,-32,-37,-32,-49,
+-10,-17,6,38,5,
+-9,-17,-46,8,52,
+3,6,45,40,39,
+-7,-6,-34,-74,31,
+8,1,-16,43,68,
+-11,-19,-31,4,6,
+0,-6,-17,-16,-38,
+-16,-30,2,9,-39,
+-16,-1,43,-10,48,
+3,3,-16,-31,-3,
+62,68,43,13,3,
+-10,8,20,-56,12,
+12,-2,-18,22,-15,
+-40,-36,1,7,41,
+0,1,46,-6,-62,
+-4,-12,-2,-11,-83,
+-13,-2,91,33,-10,
+0,4,-11,-16,79,
+32,37,14,9,51,
+-21,-28,-56,-34,0,
+21,9,-26,11,28,
+-42,-54,-23,-2,-15,
+31,30,8,-39,-66,
+-39,-36,31,-28,-40,
+-46,35,40,22,24,
+33,48,23,-34,14,
+40,32,17,27,-3,
+25,26,-13,-61,-17,
+11,4,31,60,-6,
+-26,-41,-64,13,16,
+-26,54,31,-11,-23,
+-9,-11,-34,-71,-21,
+-34,-35,55,50,29,
+-22,-27,-50,-38,57,
+33,42,57,48,26,
+11,0,-49,-31,26,
+-4,-14,5,78,37,
+17,0,-49,-12,-23,
+26,14,2,2,-43,
+-17,-12,10,-8,-4,
+8,18,12,-6,20,
+-12,-6,-13,-25,34,
+15,40,49,7,8,
+13,20,20,-19,-22,
+-2,-8,2,51,-51};
+
+const signed char cdbk_nb_low2[320]={
+-6,53,-21,-24,4,
+26,17,-4,-37,25,
+17,-36,-13,31,3,
+-6,27,15,-10,31,
+28,26,-10,-10,-40,
+16,-7,15,13,41,
+-9,0,-4,50,-6,
+-7,14,38,22,0,
+-48,2,1,-13,-19,
+32,-3,-60,11,-17,
+-1,-24,-34,-1,35,
+-5,-27,28,44,13,
+25,15,42,-11,15,
+51,35,-36,20,8,
+-4,-12,-29,19,-47,
+49,-15,-4,16,-29,
+-39,14,-30,4,25,
+-9,-5,-51,-14,-3,
+-40,-32,38,5,-9,
+-8,-4,-1,-22,71,
+-3,14,26,-18,-22,
+24,-41,-25,-24,6,
+23,19,-10,39,-26,
+-27,65,45,2,-7,
+-26,-8,22,-12,16,
+15,16,-35,-5,33,
+-21,-8,0,23,33,
+34,6,21,36,6,
+-7,-22,8,-37,-14,
+31,38,11,-4,-3,
+-39,-32,-8,32,-23,
+-6,-12,16,20,-28,
+-4,23,13,-52,-1,
+22,6,-33,-40,-6,
+4,-62,13,5,-26,
+35,39,11,2,57,
+-11,9,-20,-28,-33,
+52,-5,-6,-2,22,
+-14,-16,-48,35,1,
+-58,20,13,33,-1,
+-74,56,-18,-22,-31,
+12,6,-14,4,-2,
+-9,-47,10,-3,29,
+-17,-5,61,14,47,
+-12,2,72,-39,-17,
+92,64,-53,-51,-15,
+-30,-38,-41,-29,-28,
+27,9,36,9,-35,
+-42,81,-21,20,25,
+-16,-5,-17,-35,21,
+15,-28,48,2,-2,
+9,-19,29,-40,30,
+-18,-18,18,-16,-57,
+15,-20,-12,-15,-37,
+-15,33,-39,21,-22,
+-13,35,11,13,-38,
+-63,29,23,-27,32,
+18,3,-26,42,33,
+-64,-66,-17,16,56,
+2,36,3,31,21,
+-41,-39,8,-57,14,
+37,-2,19,-36,-19,
+-23,-29,-16,1,-3,
+-8,-10,31,64,-65};
+
+const signed char cdbk_nb_high1[320]={
+-26,-8,29,21,4,
+19,-39,33,-7,-36,
+56,54,48,40,29,
+-4,-24,-42,-66,-43,
+-60,19,-2,37,41,
+-10,-37,-60,-64,18,
+-22,77,73,40,25,
+4,19,-19,-66,-2,
+11,5,21,14,26,
+-25,-86,-4,18,1,
+26,-37,10,37,-1,
+24,-12,-59,-11,20,
+-6,34,-16,-16,42,
+19,-28,-51,53,32,
+4,10,62,21,-12,
+-34,27,4,-48,-48,
+-50,-49,31,-7,-21,
+-42,-25,-4,-43,-22,
+59,2,27,12,-9,
+-6,-16,-8,-32,-58,
+-16,-29,-5,41,23,
+-30,-33,-46,-13,-10,
+-38,52,52,1,-17,
+-9,10,26,-25,-6,
+33,-20,53,55,25,
+-32,-5,-42,23,21,
+66,5,-28,20,9,
+75,29,-7,-42,-39,
+15,3,-23,21,6,
+11,1,-29,14,63,
+10,54,26,-24,-51,
+-49,7,-23,-51,15,
+-66,1,60,25,10,
+0,-30,-4,-15,17,
+19,59,40,4,-5,
+33,6,-22,-58,-70,
+-5,23,-6,60,44,
+-29,-16,-47,-29,52,
+-19,50,28,16,35,
+31,36,0,-21,6,
+21,27,22,42,7,
+-66,-40,-8,7,19,
+46,0,-4,60,36,
+45,-7,-29,-6,-32,
+-39,2,6,-9,33,
+20,-51,-34,18,-6,
+19,6,11,5,-19,
+-29,-2,42,-11,-45,
+-21,-55,57,37,2,
+-14,-67,-16,-27,-38,
+69,48,19,2,-17,
+20,-20,-16,-34,-17,
+-25,-61,10,73,45,
+16,-40,-64,-17,-29,
+-22,56,17,-39,8,
+-11,8,-25,-18,-13,
+-19,8,54,57,36,
+-17,-26,-4,6,-21,
+40,42,-4,20,31,
+53,10,-34,-53,31,
+-17,35,0,15,-6,
+-20,-63,-73,22,25,
+29,17,8,-29,-39,
+-69,18,15,-15,-5};
+
+const signed char cdbk_nb_high2[320]={
+11,47,16,-9,-46,
+-32,26,-64,34,-5,
+38,-7,47,20,2,
+-73,-99,-3,-45,20,
+70,-52,15,-6,-7,
+-82,31,21,47,51,
+39,-3,9,0,-41,
+-7,-15,-54,2,0,
+27,-31,9,-45,-22,
+-38,-24,-24,8,-33,
+23,5,50,-36,-17,
+-18,-51,-2,13,19,
+43,12,-15,-12,61,
+38,38,7,13,0,
+6,-1,3,62,9,
+27,22,-33,38,-35,
+-9,30,-43,-9,-32,
+-1,4,-4,1,-5,
+-11,-8,38,31,11,
+-10,-42,-21,-37,1,
+43,15,-13,-35,-19,
+-18,15,23,-26,59,
+1,-21,53,8,-41,
+-50,-14,-28,4,21,
+25,-28,-40,5,-40,
+-41,4,51,-33,-8,
+-8,1,17,-60,12,
+25,-41,17,34,43,
+19,45,7,-37,24,
+-15,56,-2,35,-10,
+48,4,-47,-2,5,
+-5,-54,5,-3,-33,
+-10,30,-2,-44,-24,
+-38,9,-9,42,4,
+6,-56,44,-16,9,
+-40,-26,18,-20,10,
+28,-41,-21,-4,13,
+-18,32,-30,-3,37,
+15,22,28,50,-40,
+3,-29,-64,7,51,
+-19,-11,17,-27,-40,
+-64,24,-12,-7,-27,
+3,37,48,-1,2,
+-9,-38,-34,46,1,
+27,-6,19,-13,26,
+10,34,20,25,40,
+50,-6,-7,30,9,
+-24,0,-23,71,-61,
+22,58,-34,-4,2,
+-49,-33,25,30,-8,
+-6,-16,77,2,38,
+-8,-35,-6,-30,56,
+78,31,33,-20,13,
+-39,20,22,4,21,
+-8,4,-6,10,-83,
+-41,9,-25,-43,15,
+-7,-12,-34,-39,-37,
+-33,19,30,16,-33,
+42,-25,25,-68,44,
+-15,-11,-4,23,50,
+14,4,-39,-43,20,
+-30,60,9,-20,7,
+16,19,-33,37,29,
+16,-35,7,38,-27};
diff --git a/pjmedia/src/pjmedia-codec/speex/ltp.c b/pjmedia/src/pjmedia-codec/speex/ltp.c
new file mode 100644
index 00000000..94189c34
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/ltp.c
@@ -0,0 +1,850 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: ltp.c
+   Long-Term Prediction functions
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "ltp.h"
+#include "stack_alloc.h"
+#include "filters.h"
+#include <speex/speex_bits.h>
+#include "math_approx.h"
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+#ifdef _USE_SSE
+#include "ltp_sse.h"
+#elif defined (ARM4_ASM) || defined(ARM5E_ASM)
+#include "ltp_arm4.h"
+#elif defined (BFIN_ASM)
+#include "ltp_bfin.h"
+#endif
+
+#ifndef OVERRIDE_INNER_PROD
+static spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
+{
+   spx_word32_t sum=0;
+   len >>= 2;
+   while(len--)
+   {
+      spx_word32_t part=0;
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      /* HINT: If you had a 40-bit accumulator, you could shift only at the end */
+      sum = ADD32(sum,SHR32(part,6));
+   }
+   return sum;
+}
+#endif
+
+#ifndef OVERRIDE_PITCH_XCORR
+#if 0 /* HINT: Enable this for machines with enough registers (i.e. not x86) */
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
+{
+   int i,j;
+   for (i=0;i<nb_pitch;i+=4)
+   {
+      /* Compute correlation*/
+      /*corr[nb_pitch-1-i]=inner_prod(x, _y+i, len);*/
+      spx_word32_t sum1=0;
+      spx_word32_t sum2=0;
+      spx_word32_t sum3=0;
+      spx_word32_t sum4=0;
+      const spx_word16_t *y = _y+i;
+      const spx_word16_t *x = _x;
+      spx_word16_t y0, y1, y2, y3;
+      /*y0=y[0];y1=y[1];y2=y[2];y3=y[3];*/
+      y0=*y++;
+      y1=*y++;
+      y2=*y++;
+      y3=*y++;
+      for (j=0;j<len;j+=4)
+      {
+         spx_word32_t part1;
+         spx_word32_t part2;
+         spx_word32_t part3;
+         spx_word32_t part4;
+         part1 = MULT16_16(*x,y0);
+         part2 = MULT16_16(*x,y1);
+         part3 = MULT16_16(*x,y2);
+         part4 = MULT16_16(*x,y3);
+         x++;
+         y0=*y++;
+         part1 = MAC16_16(part1,*x,y1);
+         part2 = MAC16_16(part2,*x,y2);
+         part3 = MAC16_16(part3,*x,y3);
+         part4 = MAC16_16(part4,*x,y0);
+         x++;
+         y1=*y++;
+         part1 = MAC16_16(part1,*x,y2);
+         part2 = MAC16_16(part2,*x,y3);
+         part3 = MAC16_16(part3,*x,y0);
+         part4 = MAC16_16(part4,*x,y1);
+         x++;
+         y2=*y++;
+         part1 = MAC16_16(part1,*x,y3);
+         part2 = MAC16_16(part2,*x,y0);
+         part3 = MAC16_16(part3,*x,y1);
+         part4 = MAC16_16(part4,*x,y2);
+         x++;
+         y3=*y++;
+         
+         sum1 = ADD32(sum1,SHR32(part1,6));
+         sum2 = ADD32(sum2,SHR32(part2,6));
+         sum3 = ADD32(sum3,SHR32(part3,6));
+         sum4 = ADD32(sum4,SHR32(part4,6));
+      }
+      corr[nb_pitch-1-i]=sum1;
+      corr[nb_pitch-2-i]=sum2;
+      corr[nb_pitch-3-i]=sum3;
+      corr[nb_pitch-4-i]=sum4;
+   }
+
+}
+#else
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
+{
+   int i;
+   for (i=0;i<nb_pitch;i++)
+   {
+      /* Compute correlation*/
+      corr[nb_pitch-1-i]=inner_prod(_x, _y+i, len);
+   }
+
+}
+#endif
+#endif
+
+#ifndef OVERRIDE_COMPUTE_PITCH_ERROR
+static inline spx_word32_t compute_pitch_error(spx_word32_t *C, spx_word16_t *g, spx_word16_t pitch_control)
+{
+   spx_word32_t sum = 0;
+   sum = ADD32(sum,MULT16_32_Q15(MULT16_16_16(g[0],pitch_control),C[0]));
+   sum = ADD32(sum,MULT16_32_Q15(MULT16_16_16(g[1],pitch_control),C[1]));
+   sum = ADD32(sum,MULT16_32_Q15(MULT16_16_16(g[2],pitch_control),C[2]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[0],g[1]),C[3]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[2],g[1]),C[4]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[2],g[0]),C[5]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[0],g[0]),C[6]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[1],g[1]),C[7]));
+   sum = SUB32(sum,MULT16_32_Q15(MULT16_16_16(g[2],g[2]),C[8]));
+   return sum;
+}
+#endif
+
+void open_loop_nbest_pitch(spx_sig_t *sw, int start, int end, int len, int *pitch, spx_word16_t *gain, int N, char *stack)
+{
+   int i,j,k;
+   VARDECL(spx_word32_t *best_score);
+   spx_word32_t e0;
+   VARDECL(spx_word32_t *corr);
+   VARDECL(spx_word32_t *energy);
+   VARDECL(spx_word32_t *score);
+   VARDECL(spx_word16_t *swn2);
+   spx_word16_t *swn;
+
+   ALLOC(best_score, N, spx_word32_t);
+   ALLOC(corr, end-start+1, spx_word32_t);
+   ALLOC(energy, end-start+2, spx_word32_t);
+   ALLOC(score, end-start+1, spx_word32_t);
+
+#ifdef FIXED_POINT
+   ALLOC(swn2, end+len, spx_word16_t);
+   normalize16(sw-end, swn2, 16384, end+len);
+   swn = swn2 + end;
+#else
+   swn = sw;
+#endif
+
+   for (i=0;i<N;i++)
+   {
+        best_score[i]=-1;
+        pitch[i]=start;
+   }
+
+
+   energy[0]=inner_prod(swn-start, swn-start, len);
+   e0=inner_prod(swn, swn, len);
+   for (i=start;i<=end;i++)
+   {
+      /* Update energy for next pitch*/
+      energy[i-start+1] = SUB32(ADD32(energy[i-start],SHR32(MULT16_16(swn[-i-1],swn[-i-1]),6)), SHR32(MULT16_16(swn[-i+len-1],swn[-i+len-1]),6));
+      if (energy[i-start+1] < 0)
+         energy[i-start+1] = 0;
+   }
+
+   pitch_xcorr(swn, swn-end, corr, len, end-start+1, stack);
+
+#ifdef FIXED_POINT
+   {
+      VARDECL(spx_word16_t *corr16);
+      VARDECL(spx_word16_t *ener16);
+      ALLOC(corr16, end-start+1, spx_word16_t);
+      ALLOC(ener16, end-start+1, spx_word16_t);
+      normalize16(corr, corr16, 16384, end-start+1);
+      normalize16(energy, ener16, 16384, end-start+1);
+
+      for (i=start;i<=end;i++)
+      {
+         spx_word16_t g;
+         spx_word32_t tmp;
+         tmp = corr16[i-start];
+         if (tmp>0)
+         {
+            if (SHR16(corr16[i-start],4)>ener16[i-start])
+               tmp = SHL32(EXTEND32(ener16[i-start]),14);
+            else if (-SHR16(corr16[i-start],4)>ener16[i-start])
+               tmp = -SHL32(EXTEND32(ener16[i-start]),14);
+            else
+               tmp = SHL32(tmp,10);
+            g = DIV32_16(tmp, 8+ener16[i-start]);
+            score[i-start] = MULT16_16(corr16[i-start],g);
+         } else
+         {
+            score[i-start] = 1;
+         }
+      }
+   }
+#else
+   for (i=start;i<=end;i++)
+   {
+      float g = corr[i-start]/(1+energy[i-start]);
+      if (g>16)
+         g = 16;
+      else if (g<-16)
+         g = -16;
+      score[i-start] = g*corr[i-start];
+   }
+#endif
+
+   /* Extract best scores */
+   for (i=start;i<=end;i++)
+   {
+      if (score[i-start]>best_score[N-1])
+      {
+         for (j=0;j<N;j++)
+         {
+            if (score[i-start] > best_score[j])
+            {
+               for (k=N-1;k>j;k--)
+               {
+                  best_score[k]=best_score[k-1];
+                  pitch[k]=pitch[k-1];
+               }
+               best_score[j]=score[i-start];
+               pitch[j]=i;
+               break;
+            }
+         }
+      }
+   }
+
+   /* Compute open-loop gain */
+   if (gain)
+   {
+       for (j=0;j<N;j++)
+       {
+          spx_word16_t g;
+          i=pitch[j];
+          g = DIV32(corr[i-start], 10+SHR32(MULT16_16(spx_sqrt(e0),spx_sqrt(energy[i-start])),6));
+          /* FIXME: g = max(g,corr/energy) */
+                   if (g<0)
+                   g = 0;
+             gain[j]=g;
+       }
+   }
+}
+
+
+/** Finds the best quantized 3-tap pitch predictor by analysis by synthesis */
+static spx_word64_t pitch_gain_search_3tap(
+const spx_sig_t target[],       /* Target vector */
+const spx_coef_t ak[],          /* LPCs for this subframe */
+const spx_coef_t awk1[],        /* Weighted LPCs #1 for this subframe */
+const spx_coef_t awk2[],        /* Weighted LPCs #2 for this subframe */
+spx_sig_t exc[],                /* Excitation */
+const void *par,
+int   pitch,                    /* Pitch value */
+int   p,                        /* Number of LPC coeffs */
+int   nsf,                      /* Number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+const spx_sig_t *exc2,
+const spx_word16_t *r,
+spx_sig_t *new_target,
+int  *cdbk_index,
+int cdbk_offset,
+int plc_tuning
+)
+{
+   int i,j;
+   VARDECL(spx_sig_t *tmp1);
+   VARDECL(spx_sig_t *tmp2);
+   spx_sig_t *x[3];
+   spx_sig_t *e[3];
+   spx_word32_t corr[3];
+   spx_word32_t A[3][3];
+   int   gain_cdbk_size;
+   const signed char *gain_cdbk;
+   spx_word16_t gain[3];
+   spx_word64_t err;
+
+   const ltp_params *params;
+   params = (const ltp_params*) par;
+   gain_cdbk_size = 1<<params->gain_bits;
+   gain_cdbk = params->gain_cdbk + 3*gain_cdbk_size*cdbk_offset;
+   ALLOC(tmp1, 3*nsf, spx_sig_t);
+   ALLOC(tmp2, 3*nsf, spx_sig_t);
+
+   x[0]=tmp1;
+   x[1]=tmp1+nsf;
+   x[2]=tmp1+2*nsf;
+   
+   e[0]=tmp2;
+   e[1]=tmp2+nsf;
+   e[2]=tmp2+2*nsf;
+   for (i=2;i>=0;i--)
+   {
+      int pp=pitch+1-i;
+      for (j=0;j<nsf;j++)
+      {
+         if (j-pp<0)
+            e[i][j]=exc2[j-pp];
+         else if (j-pp-pitch<0)
+            e[i][j]=exc2[j-pp-pitch];
+         else
+            e[i][j]=0;
+      }
+
+      if (i==2)
+         syn_percep_zero(e[i], ak, awk1, awk2, x[i], nsf, p, stack);
+      else {
+         for (j=0;j<nsf-1;j++)
+            x[i][j+1]=x[i+1][j];
+         x[i][0]=0;
+         for (j=0;j<nsf;j++)
+         {
+            x[i][j]=ADD32(x[i][j],SHL32(MULT16_32_Q15(r[j], e[i][0]),1));
+         }
+      }
+   }
+
+#ifdef FIXED_POINT
+   {
+      /* If using fixed-point, we need to normalize the signals first */
+      spx_word16_t *y[3];
+      VARDECL(spx_word16_t *ytmp);
+      VARDECL(spx_word16_t *t);
+
+      spx_sig_t max_val=1;
+      int sig_shift;
+      
+      ALLOC(ytmp, 3*nsf, spx_word16_t);
+#if 0
+      ALLOC(y[0], nsf, spx_word16_t);
+      ALLOC(y[1], nsf, spx_word16_t);
+      ALLOC(y[2], nsf, spx_word16_t);
+#else
+      y[0] = ytmp;
+      y[1] = ytmp+nsf;
+      y[2] = ytmp+2*nsf;
+#endif
+      ALLOC(t, nsf, spx_word16_t);
+      for (j=0;j<3;j++)
+      {
+         for (i=0;i<nsf;i++)
+         {
+            spx_sig_t tmp = x[j][i];
+            if (tmp<0)
+               tmp = -tmp;
+            if (tmp > max_val)
+               max_val = tmp;
+         }
+      }
+      for (i=0;i<nsf;i++)
+      {
+         spx_sig_t tmp = target[i];
+         if (tmp<0)
+            tmp = -tmp;
+         if (tmp > max_val)
+            max_val = tmp;
+      }
+
+      sig_shift=0;
+      while (max_val>16384)
+      {
+         sig_shift++;
+         max_val >>= 1;
+      }
+
+      for (j=0;j<3;j++)
+      {
+         for (i=0;i<nsf;i++)
+         {
+            y[j][i] = EXTRACT16(SHR32(x[j][i],sig_shift));
+         }
+      }
+      for (i=0;i<nsf;i++)
+      {
+         t[i] = EXTRACT16(SHR32(target[i],sig_shift));
+      }
+
+      for (i=0;i<3;i++)
+         corr[i]=inner_prod(y[i],t,nsf);
+      
+      for (i=0;i<3;i++)
+         for (j=0;j<=i;j++)
+            A[i][j]=A[j][i]=inner_prod(y[i],y[j],nsf);
+   }
+#else
+   {
+      for (i=0;i<3;i++)
+         corr[i]=inner_prod(x[i],target,nsf);
+      
+      for (i=0;i<3;i++)
+         for (j=0;j<=i;j++)
+            A[i][j]=A[j][i]=inner_prod(x[i],x[j],nsf);
+   }
+#endif
+
+   {
+      spx_word32_t C[9];
+      const signed char *ptr=gain_cdbk;
+      int best_cdbk=0;
+      spx_word32_t best_sum=0;
+      C[0]=corr[2];
+      C[1]=corr[1];
+      C[2]=corr[0];
+      C[3]=A[1][2];
+      C[4]=A[0][1];
+      C[5]=A[0][2];      
+      C[6]=A[2][2];
+      C[7]=A[1][1];
+      C[8]=A[0][0];
+      
+      /*plc_tuning *= 2;*/
+      if (plc_tuning<2)
+         plc_tuning=2;
+#ifdef FIXED_POINT
+      C[0] = MAC16_32_Q15(C[0],MULT16_16_16(plc_tuning,-327),C[0]);
+      C[1] = MAC16_32_Q15(C[1],MULT16_16_16(plc_tuning,-327),C[1]);
+      C[2] = MAC16_32_Q15(C[2],MULT16_16_16(plc_tuning,-327),C[2]);
+      C[0] = SHL32(C[0],1);
+      C[1] = SHL32(C[1],1);
+      C[2] = SHL32(C[2],1);
+      C[3] = SHL32(C[3],1);
+      C[4] = SHL32(C[4],1);
+      C[5] = SHL32(C[5],1);
+#else
+      C[0]*=1-.01*plc_tuning;
+      C[1]*=1-.01*plc_tuning;
+      C[2]*=1-.01*plc_tuning;
+      C[6]*=.5*(1+.01*plc_tuning);
+      C[7]*=.5*(1+.01*plc_tuning);
+      C[8]*=.5*(1+.01*plc_tuning);
+#endif
+      for (i=0;i<gain_cdbk_size;i++)
+      {
+         spx_word32_t sum=0;
+         spx_word16_t g[3];
+         spx_word16_t pitch_control=64;
+         spx_word16_t gain_sum;
+         
+         ptr = gain_cdbk+3*i;
+         g[0]=ADD16((spx_word16_t)ptr[0],32);
+         g[1]=ADD16((spx_word16_t)ptr[1],32);
+         g[2]=ADD16((spx_word16_t)ptr[2],32);
+
+         /* We favor "safe" pitch values to handle packet loss better */
+         gain_sum = ADD16(ADD16(g[1],MAX16(g[0], 0)),MAX16(g[2], 0));
+         if (gain_sum > 64)
+         {
+            gain_sum = SUB16(gain_sum, 64);
+            if (gain_sum > 127)
+               gain_sum = 127;
+#ifdef FIXED_POINT
+            pitch_control =  SUB16(64,EXTRACT16(PSHR32(MULT16_16(64,MULT16_16_16(plc_tuning, gain_sum)),10)));
+#else
+            pitch_control = 64*(1.-.001*plc_tuning*gain_sum);
+#endif
+            if (pitch_control < 0)
+               pitch_control = 0;
+         }
+         
+         sum = compute_pitch_error(C, g, pitch_control);
+         
+         if (sum>best_sum || i==0)
+         {
+            best_sum=sum;
+            best_cdbk=i;
+         }
+      }
+#ifdef FIXED_POINT
+      gain[0] = ADD16(32,(spx_word16_t)gain_cdbk[best_cdbk*3]);
+      gain[1] = ADD16(32,(spx_word16_t)gain_cdbk[best_cdbk*3+1]);
+      gain[2] = ADD16(32,(spx_word16_t)gain_cdbk[best_cdbk*3+2]);
+      /*printf ("%d %d %d %d\n",gain[0],gain[1],gain[2], best_cdbk);*/
+#else
+      gain[0] = 0.015625*gain_cdbk[best_cdbk*3]  + .5;
+      gain[1] = 0.015625*gain_cdbk[best_cdbk*3+1]+ .5;
+      gain[2] = 0.015625*gain_cdbk[best_cdbk*3+2]+ .5;
+#endif
+      *cdbk_index=best_cdbk;
+   }
+
+#ifdef FIXED_POINT
+   for (i=0;i<nsf;i++)
+     exc[i]=SHL32(ADD32(ADD32(MULT16_32_Q15(SHL16(gain[0],7),e[2][i]), MULT16_32_Q15(SHL16(gain[1],7),e[1][i])),
+                        MULT16_32_Q15(SHL16(gain[2],7),e[0][i])), 2);
+   
+   err=0;
+   for (i=0;i<nsf;i++)
+   {
+      spx_word16_t perr2;
+      spx_sig_t tmp = SHL32(ADD32(ADD32(MULT16_32_Q15(SHL16(gain[0],7),x[2][i]),MULT16_32_Q15(SHL16(gain[1],7),x[1][i])),
+                                  MULT16_32_Q15(SHL16(gain[2],7),x[0][i])),2);
+      spx_sig_t perr=SUB32(target[i],tmp);
+      new_target[i] = SUB32(target[i], tmp);
+      perr2 = EXTRACT16(PSHR32(perr,15));
+      err = ADD64(err,MULT16_16(perr2,perr2));
+      
+   }
+#else
+   for (i=0;i<nsf;i++)
+      exc[i]=gain[0]*e[2][i]+gain[1]*e[1][i]+gain[2]*e[0][i];
+   
+   err=0;
+   for (i=0;i<nsf;i++)
+   {
+      spx_sig_t tmp = gain[2]*x[0][i]+gain[1]*x[1][i]+gain[0]*x[2][i];
+      new_target[i] = target[i] - tmp;
+      err+=new_target[i]*new_target[i];
+   }
+#endif
+
+   return err;
+}
+
+
+/** Finds the best quantized 3-tap pitch predictor by analysis by synthesis */
+int pitch_search_3tap(
+spx_sig_t target[],                 /* Target vector */
+spx_sig_t *sw,
+spx_coef_t ak[],                     /* LPCs for this subframe */
+spx_coef_t awk1[],                   /* Weighted LPCs #1 for this subframe */
+spx_coef_t awk2[],                   /* Weighted LPCs #2 for this subframe */
+spx_sig_t exc[],                    /* Excitation */
+const void *par,
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+int   p,                        /* Number of LPC coeffs */
+int   nsf,                      /* Number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_sig_t *exc2,
+spx_word16_t *r,
+int complexity,
+int cdbk_offset,
+int plc_tuning
+)
+{
+   int i,j;
+   int cdbk_index, pitch=0, best_gain_index=0;
+   VARDECL(spx_sig_t *best_exc);
+   VARDECL(spx_sig_t *new_target);
+   VARDECL(spx_sig_t *best_target);
+   int best_pitch=0;
+   spx_word64_t err, best_err=-1;
+   int N;
+   const ltp_params *params;
+   VARDECL(int *nbest);
+
+   N=complexity;
+   if (N>10)
+      N=10;
+   if (N<1)
+      N=1;
+
+   ALLOC(nbest, N, int);
+   params = (const ltp_params*) par;
+
+   if (end<start)
+   {
+      speex_bits_pack(bits, 0, params->pitch_bits);
+      speex_bits_pack(bits, 0, params->gain_bits);
+      for (i=0;i<nsf;i++)
+         exc[i]=0;
+      return start;
+   }
+   
+   ALLOC(best_exc, nsf, spx_sig_t);
+   ALLOC(new_target, nsf, spx_sig_t);
+   ALLOC(best_target, nsf, spx_sig_t);
+   
+   if (N>end-start+1)
+      N=end-start+1;
+   if (end != start)
+      open_loop_nbest_pitch(sw, start, end, nsf, nbest, NULL, N, stack);
+   else
+      nbest[0] = start;
+   for (i=0;i<N;i++)
+   {
+      pitch=nbest[i];
+      for (j=0;j<nsf;j++)
+         exc[j]=0;
+      err=pitch_gain_search_3tap(target, ak, awk1, awk2, exc, par, pitch, p, nsf,
+                                 bits, stack, exc2, r, new_target, &cdbk_index, cdbk_offset, plc_tuning);
+      if (err<best_err || best_err<0)
+      {
+         for (j=0;j<nsf;j++)
+            best_exc[j]=exc[j];
+         for (j=0;j<nsf;j++)
+            best_target[j]=new_target[j];
+         best_err=err;
+         best_pitch=pitch;
+         best_gain_index=cdbk_index;
+      }
+   }
+   
+   /*printf ("pitch: %d %d\n", best_pitch, best_gain_index);*/
+   speex_bits_pack(bits, best_pitch-start, params->pitch_bits);
+   speex_bits_pack(bits, best_gain_index, params->gain_bits);
+   /*printf ("encode pitch: %d %d\n", best_pitch, best_gain_index);*/
+   for (i=0;i<nsf;i++)
+      exc[i]=best_exc[i];
+   for (i=0;i<nsf;i++)
+      target[i]=best_target[i];
+
+   return pitch;
+}
+
+void pitch_unquant_3tap(
+spx_sig_t exc[],                    /* Excitation */
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+const void *par,
+int   nsf,                      /* Number of samples in subframe */
+int *pitch_val,
+spx_word16_t *gain_val,
+SpeexBits *bits,
+char *stack,
+int count_lost,
+int subframe_offset,
+spx_word16_t last_pitch_gain,
+int cdbk_offset
+)
+{
+   int i;
+   int pitch;
+   int gain_index;
+   spx_word16_t gain[3];
+   const signed char *gain_cdbk;
+   int gain_cdbk_size;
+   const ltp_params *params;
+
+   params = (const ltp_params*) par;
+   gain_cdbk_size = 1<<params->gain_bits;
+   gain_cdbk = params->gain_cdbk + 3*gain_cdbk_size*cdbk_offset;
+
+   pitch = speex_bits_unpack_unsigned(bits, params->pitch_bits);
+   pitch += start;
+   gain_index = speex_bits_unpack_unsigned(bits, params->gain_bits);
+   /*printf ("decode pitch: %d %d\n", pitch, gain_index);*/
+#ifdef FIXED_POINT
+   gain[0] = ADD16(32,(spx_word16_t)gain_cdbk[gain_index*3]);
+   gain[1] = ADD16(32,(spx_word16_t)gain_cdbk[gain_index*3+1]);
+   gain[2] = ADD16(32,(spx_word16_t)gain_cdbk[gain_index*3+2]);
+#else
+   gain[0] = 0.015625*gain_cdbk[gain_index*3]+.5;
+   gain[1] = 0.015625*gain_cdbk[gain_index*3+1]+.5;
+   gain[2] = 0.015625*gain_cdbk[gain_index*3+2]+.5;
+#endif
+
+   if (count_lost && pitch > subframe_offset)
+   {
+      spx_word16_t gain_sum;
+      if (1) {
+#ifdef FIXED_POINT
+         spx_word16_t tmp = count_lost < 4 ? last_pitch_gain : SHR16(last_pitch_gain,1);
+         if (tmp>62)
+            tmp=62;
+#else
+         spx_word16_t tmp = count_lost < 4 ? last_pitch_gain : 0.5 * last_pitch_gain;
+         if (tmp>.95)
+            tmp=.95;
+#endif
+         gain_sum = gain_3tap_to_1tap(gain);
+
+         if (gain_sum > tmp)
+         {
+            spx_word16_t fact = DIV32_16(SHL32(EXTEND32(tmp),14),gain_sum);
+            for (i=0;i<3;i++)
+               gain[i]=MULT16_16_Q14(fact,gain[i]);
+         }
+
+      }
+
+   }
+
+   *pitch_val = pitch;
+   gain_val[0]=gain[0];
+   gain_val[1]=gain[1];
+   gain_val[2]=gain[2];
+
+   {
+      spx_sig_t *e[3];
+      VARDECL(spx_sig_t *tmp2);
+      ALLOC(tmp2, 3*nsf, spx_sig_t);
+      e[0]=tmp2;
+      e[1]=tmp2+nsf;
+      e[2]=tmp2+2*nsf;
+      
+      for (i=0;i<3;i++)
+      {
+         int j;
+         int pp=pitch+1-i;
+#if 0
+         for (j=0;j<nsf;j++)
+         {
+            if (j-pp<0)
+               e[i][j]=exc[j-pp];
+            else if (j-pp-pitch<0)
+               e[i][j]=exc[j-pp-pitch];
+            else
+               e[i][j]=0;
+         }
+#else
+         {
+            int tmp1, tmp3;
+            tmp1=nsf;
+            if (tmp1>pp)
+               tmp1=pp;
+            for (j=0;j<tmp1;j++)
+               e[i][j]=exc[j-pp];
+            tmp3=nsf;
+            if (tmp3>pp+pitch)
+               tmp3=pp+pitch;
+            for (j=tmp1;j<tmp3;j++)
+               e[i][j]=exc[j-pp-pitch];
+            for (j=tmp3;j<nsf;j++)
+               e[i][j]=0;
+         }
+#endif
+      }
+
+#ifdef FIXED_POINT
+      {
+         for (i=0;i<nsf;i++)
+            exc[i]=SHL32(ADD32(ADD32(MULT16_32_Q15(SHL16(gain[0],7),e[2][i]), MULT16_32_Q15(SHL16(gain[1],7),e[1][i])),
+                               MULT16_32_Q15(SHL16(gain[2],7),e[0][i])), 2);
+      }
+#else
+      for (i=0;i<nsf;i++)
+         exc[i]=VERY_SMALL+gain[0]*e[2][i]+gain[1]*e[1][i]+gain[2]*e[0][i];
+#endif
+   }
+}
+
+
+/** Forced pitch delay and gain */
+int forced_pitch_quant(
+spx_sig_t target[],                 /* Target vector */
+spx_sig_t *sw,
+spx_coef_t ak[],                     /* LPCs for this subframe */
+spx_coef_t awk1[],                   /* Weighted LPCs #1 for this subframe */
+spx_coef_t awk2[],                   /* Weighted LPCs #2 for this subframe */
+spx_sig_t exc[],                    /* Excitation */
+const void *par,
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+int   p,                        /* Number of LPC coeffs */
+int   nsf,                      /* Number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_sig_t *exc2,
+spx_word16_t *r,
+int complexity,
+int cdbk_offset,
+int plc_tuning
+)
+{
+   int i;
+   float coef = GAIN_SCALING_1*pitch_coef;
+   if (coef>.99)
+      coef=.99;
+   for (i=0;i<nsf;i++)
+   {
+      exc[i]=exc[i-start]*coef;
+   }
+   return start;
+}
+
+/** Unquantize forced pitch delay and gain */
+void forced_pitch_unquant(
+spx_sig_t exc[],                    /* Excitation */
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+const void *par,
+int   nsf,                      /* Number of samples in subframe */
+int *pitch_val,
+spx_word16_t *gain_val,
+SpeexBits *bits,
+char *stack,
+int count_lost,
+int subframe_offset,
+spx_word16_t last_pitch_gain,
+int cdbk_offset
+)
+{
+   int i;
+   float coef = GAIN_SCALING_1*pitch_coef;
+   if (coef>.99)
+      coef=.99;
+   for (i=0;i<nsf;i++)
+   {
+      exc[i]=exc[i-start]*coef;
+   }
+   *pitch_val = start;
+   gain_val[0]=gain_val[2]=0;
+   gain_val[1] = pitch_coef;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/ltp.h b/pjmedia/src/pjmedia-codec/speex/ltp.h
new file mode 100644
index 00000000..36debbdd
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/ltp.h
@@ -0,0 +1,134 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file ltp.h
+   @brief Long-Term Prediction functions
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <speex/speex_bits.h>
+#include "misc.h"
+
+/** LTP parameters. */
+typedef struct {
+   const signed char *gain_cdbk;
+   int     gain_bits;
+   int     pitch_bits;
+} ltp_params;
+
+#ifdef FIXED_POINT
+#define gain_3tap_to_1tap(g) (ABS(g[1]) + (g[0]>0 ? g[0] : -SHR16(g[0],1)) + (g[2]>0 ? g[2] : -SHR16(g[2],1)))
+#else
+#define gain_3tap_to_1tap(g) (ABS(g[1]) + (g[0]>0 ? g[0] : -.5*g[0]) + (g[2]>0 ? g[2] : -.5*g[2]))
+#endif
+
+void open_loop_nbest_pitch(spx_sig_t *sw, int start, int end, int len, int *pitch, spx_word16_t *gain, int N, char *stack);
+
+
+/** Finds the best quantized 3-tap pitch predictor by analysis by synthesis */
+int pitch_search_3tap(
+spx_sig_t target[],                 /* Target vector */
+spx_sig_t *sw,
+spx_coef_t ak[],                     /* LPCs for this subframe */
+spx_coef_t awk1[],                   /* Weighted LPCs #1 for this subframe */
+spx_coef_t awk2[],                   /* Weighted LPCs #2 for this subframe */
+spx_sig_t exc[],                    /* Overlapping codebook */
+const void *par,
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+int   p,                        /* Number of LPC coeffs */
+int   nsf,                      /* Number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_sig_t *exc2,
+spx_word16_t *r,
+int   complexity,
+int   cdbk_offset,
+int plc_tuning
+);
+
+/*Unquantize adaptive codebook and update pitch contribution*/
+void pitch_unquant_3tap(
+spx_sig_t exc[],                    /* Excitation */
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+const void *par,
+int   nsf,                      /* Number of samples in subframe */
+int *pitch_val,
+spx_word16_t *gain_val,
+SpeexBits *bits,
+char *stack,
+int lost,
+int subframe_offset,
+spx_word16_t last_pitch_gain,
+int cdbk_offset
+);
+
+/** Forced pitch delay and gain */
+int forced_pitch_quant(
+spx_sig_t target[],                 /* Target vector */
+spx_sig_t *sw,
+spx_coef_t ak[],                     /* LPCs for this subframe */
+spx_coef_t awk1[],                   /* Weighted LPCs #1 for this subframe */
+spx_coef_t awk2[],                   /* Weighted LPCs #2 for this subframe */
+spx_sig_t exc[],                    /* Excitation */
+const void *par,
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+int   p,                        /* Number of LPC coeffs */
+int   nsf,                      /* Number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_sig_t *exc2,
+spx_word16_t *r,
+int complexity,
+int cdbk_offset,
+int plc_tuning
+);
+
+/** Unquantize forced pitch delay and gain */
+void forced_pitch_unquant(
+spx_sig_t exc[],                    /* Excitation */
+int   start,                    /* Smallest pitch value allowed */
+int   end,                      /* Largest pitch value allowed */
+spx_word16_t pitch_coef,               /* Voicing (pitch) coefficient */
+const void *par,
+int   nsf,                      /* Number of samples in subframe */
+int *pitch_val,
+spx_word16_t *gain_val,
+SpeexBits *bits,
+char *stack,
+int lost,
+int subframe_offset,
+spx_word16_t last_pitch_gain,
+int cdbk_offset
+);
diff --git a/pjmedia/src/pjmedia-codec/speex/ltp_arm4.h b/pjmedia/src/pjmedia-codec/speex/ltp_arm4.h
new file mode 100644
index 00000000..a5a0beeb
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/ltp_arm4.h
@@ -0,0 +1,188 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file ltp_arm4.h
+   @brief Long-Term Prediction functions (ARM4 version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_INNER_PROD
+static spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
+{
+   spx_word32_t sum1=0,sum2=0;
+   spx_word16_t *deadx, *deady;
+   int deadlen, dead1, dead2, dead3, dead4, dead5, dead6;
+   __asm__ __volatile__ (
+         "\tldrsh %5, [%0], #2 \n"
+         "\tldrsh %6, [%1], #2 \n"
+         ".inner_prod_loop%=:\n"
+         "\tsub %7, %7, %7\n"
+         "\tsub %10, %10, %10\n"
+
+         "\tldrsh %8, [%0], #2 \n"
+         "\tldrsh %9, [%1], #2 \n"
+         "\tmla %7, %5, %6, %7\n"
+         "\tldrsh %5, [%0], #2 \n"
+         "\tldrsh %6, [%1], #2 \n"
+         "\tmla %10, %8, %9, %10\n"
+         "\tldrsh %8, [%0], #2 \n"
+         "\tldrsh %9, [%1], #2 \n"
+         "\tmla %7, %5, %6, %7\n"
+         "\tldrsh %5, [%0], #2 \n"
+         "\tldrsh %6, [%1], #2 \n"
+         "\tmla %10, %8, %9, %10\n"
+
+         "\tldrsh %8, [%0], #2 \n"
+         "\tldrsh %9, [%1], #2 \n"
+         "\tmla %7, %5, %6, %7\n"
+         "\tldrsh %5, [%0], #2 \n"
+         "\tldrsh %6, [%1], #2 \n"
+         "\tmla %10, %8, %9, %10\n"
+         "\tldrsh %8, [%0], #2 \n"
+         "\tldrsh %9, [%1], #2 \n"
+         "\tmla %7, %5, %6, %7\n"
+         "\tldrsh %5, [%0], #2 \n"
+         "\tldrsh %6, [%1], #2 \n"
+         "\tmla %10, %8, %9, %10\n"
+
+         "\tsubs %4, %4, #1\n"
+         "\tadd %2, %2, %7, asr #5\n"
+         "\tadd %3, %3, %10, asr #5\n"
+         "\tbne .inner_prod_loop%=\n"
+   : "=r" (deadx), "=r" (deady), "=r" (sum1),  "=r" (sum2), "=r" (deadlen),
+   "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4), "=r" (dead5), "=r" (dead6)
+   : "0" (x), "1" (y), "2" (sum1), "3" (sum2), "4" (len>>3)
+   : "cc"
+                        );
+   return (sum1+sum2)>>1;
+}
+
+#define OVERRIDE_PITCH_XCORR
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
+{
+   int i,j;
+   for (i=0;i<nb_pitch;i+=4)
+   {
+      /* Compute correlation*/
+      //corr[nb_pitch-1-i]=inner_prod(x, _y+i, len);
+      spx_word32_t sum1=0;
+      spx_word32_t sum2=0;
+      spx_word32_t sum3=0;
+      spx_word32_t sum4=0;
+      const spx_word16_t *y = _y+i;
+      const spx_word16_t *x = _x;
+      spx_word32_t y0, y1, y2, y3;
+      y0=*y++;
+      y1=*y++;
+      y2=*y++;
+      y3=*y++;
+      for (j=0;j<len;j+=4)
+      {
+         spx_word32_t part1, part2, part3, part4, x0;
+         spx_word32_t dead1;
+         __asm__ __volatile__ (
+#ifdef SHORTCUTS
+               "\tldrsh %10, [%8], #4 \n"
+               "\tmul %4, %10, %0 \n"
+               "\tldrsh %15, [%8], #4 \n"
+               "\tmul %5, %10, %1 \n"
+               "\tldrsh %0, [%9], #2 \n"
+               "\tmul %6, %10, %2 \n"
+               "\tldrsh %1, [%9], #2 \n"
+               "\tmul %7, %10, %3 \n"
+               
+               
+               "\tmla %4, %15, %2, %4 \n"
+               "\tldrsh %2, [%9], #2 \n"
+               "\tmla %5, %15, %3, %5 \n"
+               "\tldrsh %3, [%9], #2 \n"
+               "\tmla %6, %15, %0, %6 \n"
+               "\tmla %7, %15, %1, %7 \n"
+
+#else
+               "\tldrsh %10, [%8], #2 \n"
+               "\tmul %4, %10, %0 \n"
+               "\tmul %5, %10, %1 \n"
+               "\tmul %6, %10, %2 \n"
+               "\tmul %7, %10, %3 \n"
+
+               "\tldrsh %10, [%8], #2 \n"
+               "\tldrsh %0, [%9], #2 \n"
+               "\tmla %4, %10, %1, %4 \n"
+               "\tmla %5, %10, %2, %5 \n"
+               "\tmla %6, %10, %3, %6 \n"
+               "\tmla %7, %10, %0, %7 \n"
+
+               "\tldrsh %10, [%8], #2 \n"
+               "\tldrsh %1, [%9], #2 \n"
+               "\tmla %4, %10, %2, %4 \n"
+               "\tmla %5, %10, %3, %5 \n"
+               "\tmla %6, %10, %0, %6 \n"
+               "\tmla %7, %10, %1, %7 \n"
+
+               "\tldrsh %10, [%8], #2 \n"
+               "\tldrsh %2, [%9], #2 \n"
+               "\tmla %4, %10, %3, %4 \n"
+               "\tmla %5, %10, %0, %5 \n"
+               "\tmla %6, %10, %1, %6 \n"
+               "\tmla %7, %10, %2, %7 \n"
+
+               "\tldrsh %3, [%9], #2 \n"
+#endif
+
+               "\tldr %10, %11 \n"
+               "\tldr %15, %12 \n"
+               "\tadd %4, %10, %4, asr #6 \n"
+               "\tstr %4, %11 \n"
+               "\tldr %10, %13 \n"
+               "\tadd %5, %15, %5, asr #6 \n"
+               "\tstr %5, %12 \n"
+               "\tldr %15, %14 \n"
+               "\tadd %6, %10, %6, asr #6 \n"
+               "\tadd %7, %15, %7, asr #6 \n"
+               "\tstr %6, %13 \n"
+               "\tstr %7, %14 \n"
+
+            : "=r" (y0), "=r" (y1), "=r" (y2), "=r" (y3),
+         "=r" (part1),  "=r" (part2),  "=r" (part3),  "=r" (part4),
+         "=r" (x), "=r" (y), "=r" (x0),
+         "=m" (sum1), "=m" (sum2), "=m" (sum3), "=m" (sum4), "=r" (dead1)
+            : "0" (y0), "1" (y1), "2" (y2), "3" (y3),
+            "8" (x), "9" (y),
+            "11" (sum1), "12" (sum2), "13" (sum3), "14" (sum4)
+            : "cc", "memory"
+                              );
+      }
+      corr[nb_pitch-1-i]=sum1;
+      corr[nb_pitch-2-i]=sum2;
+      corr[nb_pitch-3-i]=sum3;
+      corr[nb_pitch-4-i]=sum4;
+   }
+
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/ltp_bfin.h b/pjmedia/src/pjmedia-codec/speex/ltp_bfin.h
new file mode 100644
index 00000000..e92dbe2a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/ltp_bfin.h
@@ -0,0 +1,165 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file ltp_bfin.h
+   @author Jean-Marc Valin
+   @brief Long-Term Prediction functions (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_INNER_PROD
+static spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
+{
+   spx_word32_t sum=0;
+   __asm__ __volatile__ (
+      "P0 = %3;\n\t"
+      "P1 = %1;\n\t"
+      "P2 = %2;\n\t"
+      "I0 = P1;\n\t"
+      "I1 = P2;\n\t"
+      "L0 = 0;\n\t"
+      "L1 = 0;\n\t"
+      "A0 = 0;\n\t"
+      "R0.L = W[I0++] || R1.L = W[I1++];\n\t"
+      "LOOP inner%= LC0 = P0;\n\t"
+      "LOOP_BEGIN inner%=;\n\t"
+         "A0 += R0.L*R1.L (IS) || R0.L = W[I0++] || R1.L = W[I1++];\n\t"
+      "LOOP_END inner%=;\n\t"
+      "A0 += R0.L*R1.L (IS);\n\t"
+      "A0 = A0 >>> 6;\n\t"
+      "R0 = A0;\n\t"
+      "%0 = R0;\n\t"
+   : "=m" (sum)
+   : "m" (x), "m" (y), "d" (len-1)
+   : "P0", "P1", "P2", "R0", "R1", "A0", "I0", "I1", "L0", "L1", "R3"
+   );
+   return sum;
+}
+
+#define OVERRIDE_PITCH_XCORR
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
+{
+   corr += nb_pitch - 1;
+   __asm__ __volatile__ (
+      "P2 = %0;\n\t"
+      "I0 = P2;\n\t" /* x in I0 */
+      "B0 = P2;\n\t" /* x in B0 */
+      "R0 = %3;\n\t" /* len in R0 */
+      "P3 = %3;\n\t"
+      "P3 += -2;\n\t" /* len in R0 */
+      "P4 = %4;\n\t" /* nb_pitch in R0 */
+      "R1 = R0 << 1;\n\t" /* number of bytes in x */
+      "L0 = R1;\n\t"
+      "P0 = %1;\n\t"
+
+      "P1 = %2;\n\t"
+      "B1 = P1;\n\t"
+      "L1 = 0;\n\t" /*Disable looping on I1*/
+
+      "r0 = [I0++];\n\t"
+      "LOOP pitch%= LC0 = P4 >> 1;\n\t"
+      "LOOP_BEGIN pitch%=;\n\t"
+         "I1 = P0;\n\t"
+         "A1 = A0 = 0;\n\t"
+         "R1 = [I1++];\n\t"
+         "LOOP inner_prod%= LC1 = P3 >> 1;\n\t"
+         "LOOP_BEGIN inner_prod%=;\n\t"
+            "A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t"
+            "A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R1.H = W[I1++] || R0 = [I0++];\n\t"
+         "LOOP_END inner_prod%=;\n\t"
+         "A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t"
+         "A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R0 = [I0++];\n\t"
+         "A0 = A0 >>> 6;\n\t"
+         "A1 = A1 >>> 6;\n\t"
+         "R2 = A0, R3 = A1;\n\t"
+         "[P1--] = r2;\n\t"
+         "[P1--] = r3;\n\t"
+         "P0 += 4;\n\t"
+      "LOOP_END pitch%=;\n\t"
+      "L0 = 0;\n\t"
+   : : "m" (_x), "m" (_y), "m" (corr), "m" (len), "m" (nb_pitch)
+   : "A0", "A1", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "R3", "I0", "I1", "L0", "L1", "B0", "B1", "memory"
+   );
+}
+
+#define OVERRIDE_COMPUTE_PITCH_ERROR
+static inline spx_word32_t compute_pitch_error(spx_word32_t *C, spx_word16_t *g, spx_word16_t pitch_control)
+{
+   spx_word32_t sum;
+   __asm__ __volatile__
+         (
+         "A1 = A0 = 0;\n\t"
+         
+         "R0 = [%1++];\n\t"
+         "R1.L = %2.L*%5.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %3.L*%5.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %4.L*%5.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %2.L*%3.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+
+         "R1.L = %4.L*%3.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %4.L*%2.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %2.L*%2.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+
+         "R1.L = %3.L*%3.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
+         
+         "R1.L = %4.L*%4.L (IS);\n\t"
+         "R0 <<= 1;\n\t"
+         "A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS);\n\t"
+         
+         "A1 = A1 >>> 16;\n\t"
+         "A0 += A1;\n\t"
+         "%0 = A0;\n\t"
+   : "=&D" (sum), "=a" (C)
+   : "d" (g[0]), "d" (g[1]), "d" (g[2]), "d" (pitch_control), "1" (C)
+   : "R0", "R1", "R2", "A0"
+         );
+   return sum;
+}
+
diff --git a/pjmedia/src/pjmedia-codec/speex/ltp_sse.h b/pjmedia/src/pjmedia-codec/speex/ltp_sse.h
new file mode 100644
index 00000000..94c0012a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/ltp_sse.h
@@ -0,0 +1,92 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file ltp_sse.h
+   @brief Long-Term Prediction functions (SSE version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <xmmintrin.h>
+
+#define OVERRIDE_INNER_PROD
+static float inner_prod(const float *a, const float *b, int len)
+{
+   int i;
+   float ret;
+   __m128 sum = _mm_setzero_ps();
+   for (i=0;i<(len>>2);i+=2)
+   {
+      sum = _mm_add_ps(sum, _mm_mul_ps(_mm_loadu_ps(a+0), _mm_loadu_ps(b+0)));
+      sum = _mm_add_ps(sum, _mm_mul_ps(_mm_loadu_ps(a+4), _mm_loadu_ps(b+4)));
+      a += 8;
+      b += 8;
+   }
+   sum = _mm_add_ps(sum, _mm_movehl_ps(sum, sum));
+   sum = _mm_add_ss(sum, _mm_shuffle_ps(sum, sum, 0x55));
+   _mm_store_ss(&ret, sum);
+   return ret;
+}
+
+#define OVERRIDE_PITCH_XCORR
+static void pitch_xcorr(const float *_x, const float *_y, float *corr, int len, int nb_pitch, char *stack)
+{
+   int i, offset;
+   VARDECL(__m128 *x);
+   VARDECL(__m128 *y);
+   int N, L;
+   N = len>>2;
+   L = nb_pitch>>2;
+   ALLOC(x, N, __m128);
+   ALLOC(y, N+L, __m128);
+   for (i=0;i<N;i++)
+      x[i] = _mm_loadu_ps(_x+(i<<2));
+   for (offset=0;offset<4;offset++)
+   {
+      for (i=0;i<N+L;i++)
+         y[i] = _mm_loadu_ps(_y+(i<<2)+offset);
+      for (i=0;i<L;i++)
+      {
+         int j;
+         __m128 sum, *xx, *yy;
+         sum = _mm_setzero_ps();
+         yy = y+i;
+         xx = x;
+         for (j=0;j<N;j+=2)
+         {
+            sum = _mm_add_ps(sum, _mm_mul_ps(xx[0], yy[0]));
+            sum = _mm_add_ps(sum, _mm_mul_ps(xx[1], yy[1]));
+            xx += 2;
+            yy += 2;
+         }
+         sum = _mm_add_ps(sum, _mm_movehl_ps(sum, sum));
+         sum = _mm_add_ss(sum, _mm_shuffle_ps(sum, sum, 0x55));
+         _mm_store_ss(corr+nb_pitch-1-(i<<2)-offset, sum);
+      }
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/math_approx.c b/pjmedia/src/pjmedia-codec/speex/math_approx.c
new file mode 100644
index 00000000..cecf1c95
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/math_approx.c
@@ -0,0 +1,179 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: math_approx.c
+   Various math approximation functions for Speex
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "math_approx.h"
+#include "misc.h"
+
+#ifdef FIXED_POINT
+
+/* sqrt(x) ~= 0.22178 + 1.29227*x - 0.77070*x^2 + 0.25723*x^3 (for .25 < x < 1) */
+#define C0 3634
+#define C1 21173
+#define C2 -12627
+#define C3 4215
+
+spx_word16_t spx_sqrt(spx_word32_t x)
+{
+   int k=0;
+   spx_word32_t rt;
+
+   if (x==0)
+      return 0;
+#if 1
+   if (x>16777216)
+   {
+      x>>=10;
+      k+=5;
+   }
+   if (x>1048576)
+   {
+      x>>=6;
+      k+=3;
+   }
+   if (x>262144)
+   {
+      x>>=4;
+      k+=2;
+   }
+   if (x>32768)
+   {
+      x>>=2;
+      k+=1;
+   }
+   if (x>16384)
+   {
+      x>>=2;
+      k+=1;
+   }
+#else
+   while (x>16384)
+   {
+      x>>=2;
+      k++;
+      }
+#endif
+   while (x<4096)
+   {
+      x<<=2;
+      k--;
+   }
+   rt = ADD16(C0, MULT16_16_Q14(x, ADD16(C1, MULT16_16_Q14(x, ADD16(C2, MULT16_16_Q14(x, (C3)))))));
+   if (k>0)
+      rt <<= k;
+   else
+      rt >>= -k;
+   rt >>=7;
+   return rt;
+}
+
+/* log(x) ~= -2.18151 + 4.20592*x - 2.88938*x^2 + 0.86535*x^3 (for .5 < x < 1) */
+
+
+#define A1 16469
+#define A2 2242
+#define A3 1486
+
+spx_word16_t spx_acos(spx_word16_t x)
+{
+   int s=0;
+   spx_word16_t ret;
+   spx_word16_t sq;
+   if (x<0)
+   {
+      s=1;
+      x = NEG16(x);
+   }
+   x = SUB16(16384,x);
+   
+   x = x >> 1;
+   sq = MULT16_16_Q13(x, ADD16(A1, MULT16_16_Q13(x, ADD16(A2, MULT16_16_Q13(x, (A3))))));
+   ret = spx_sqrt(SHL32(EXTEND32(sq),13));
+   
+   /*ret = spx_sqrt(67108864*(-1.6129e-04 + 2.0104e+00*f + 2.7373e-01*f*f + 1.8136e-01*f*f*f));*/
+   if (s)
+      ret = SUB16(25736,ret);
+   return ret;
+}
+
+
+#define K1 8192
+#define K2 -4096
+#define K3 340
+#define K4 -10
+
+spx_word16_t spx_cos(spx_word16_t x)
+{
+   spx_word16_t x2;
+
+   if (x<12868)
+   {
+      x2 = MULT16_16_P13(x,x);
+      return ADD32(K1, MULT16_16_P13(x2, ADD32(K2, MULT16_16_P13(x2, ADD32(K3, MULT16_16_P13(K4, x2))))));
+   } else {
+      x = SUB16(25736,x);
+      x2 = MULT16_16_P13(x,x);
+      return SUB32(-K1, MULT16_16_P13(x2, ADD32(K2, MULT16_16_P13(x2, ADD32(K3, MULT16_16_P13(K4, x2))))));
+   }
+}
+
+#else
+
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+
+#define C1 0.9999932946f
+#define C2 -0.4999124376f
+#define C3 0.0414877472f
+#define C4 -0.0012712095f
+
+
+#define SPX_PI_2 1.5707963268
+spx_word16_t spx_cos(spx_word16_t x)
+{
+   if (x<SPX_PI_2)
+   {
+      x *= x;
+      return C1 + x*(C2+x*(C3+C4*x));
+   } else {
+      x = M_PI-x;
+      x *= x;
+      return NEG16(C1 + x*(C2+x*(C3+C4*x)));
+   }
+}
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/math_approx.h b/pjmedia/src/pjmedia-codec/speex/math_approx.h
new file mode 100644
index 00000000..377bf1ac
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/math_approx.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file math_approx.h
+   @brief Various math approximation functions for Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef MATH_APPROX_H
+#define MATH_APPROX_H
+
+#include "misc.h"
+
+spx_word16_t spx_cos(spx_word16_t x);
+
+#ifdef FIXED_POINT
+spx_word16_t spx_sqrt(spx_word32_t x);
+spx_word16_t spx_acos(spx_word16_t x);
+#else
+#define spx_sqrt sqrt
+#define spx_acos acos
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/misc.c b/pjmedia/src/pjmedia-codec/speex/misc.c
new file mode 100644
index 00000000..fc2cb7cf
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/misc.c
@@ -0,0 +1,238 @@
+/* Copyright (C) 2002-2005 Jean-Marc Valin 
+   File: misc.c
+   Various utility routines for Speex
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "misc.h"
+
+#ifdef USER_MISC
+#include "user_misc.h"
+#endif
+
+#ifdef BFIN_ASM
+#include "misc_bfin.h"
+#endif
+
+#ifndef RELEASE
+void print_vec(float *vec, int len, char *name)
+{
+   int i;
+   printf ("%s ", name);
+   for (i=0;i<len;i++)
+      printf (" %f", vec[i]);
+   printf ("\n");
+}
+#endif
+
+#ifdef FIXED_DEBUG
+long long spx_mips=0;
+#endif
+
+
+spx_uint32_t be_int(spx_uint32_t i)
+{
+   spx_uint32_t ret=i;
+#ifndef WORDS_BIGENDIAN
+   ret =  i>>24;
+   ret += (i>>8)&0x0000ff00;
+   ret += (i<<8)&0x00ff0000;
+   ret += (i<<24);
+#endif
+   return ret;
+}
+
+spx_uint32_t le_int(spx_uint32_t i)
+{
+   spx_uint32_t ret=i;
+#ifdef WORDS_BIGENDIAN
+   ret =  i>>24;
+   ret += (i>>8)&0x0000ff00;
+   ret += (i<<8)&0x00ff0000;
+   ret += (i<<24);
+#endif
+   return ret;
+}
+
+#if BYTES_PER_CHAR == 2
+void speex_memcpy_bytes(char *dst, char *src, int nbytes)
+{
+  int i;
+  int nchars = nbytes/BYTES_PER_CHAR;
+  for (i=0;i<nchars;i++)
+    dst[i]=src[i];
+  if (nbytes & 1) {
+    /* copy in the last byte */
+    int last_i = nchars;
+    char last_dst_char = dst[last_i];
+    char last_src_char = src[last_i];
+    last_dst_char &= 0xff00;
+    last_dst_char |= (last_src_char & 0x00ff);
+    dst[last_i] = last_dst_char;
+  }
+}
+void speex_memset_bytes(char *dst, char c, int nbytes)
+{
+  int i;
+  spx_int16_t cc = ((c << 8) | c);
+  int nchars = nbytes/BYTES_PER_CHAR;
+  for (i=0;i<nchars;i++)
+    dst[i]=cc;
+  if (nbytes & 1) {
+    /* copy in the last byte */
+    int last_i = nchars;
+    char last_dst_char = dst[last_i];
+    last_dst_char &= 0xff00;
+    last_dst_char |= (c & 0x00ff);
+    dst[last_i] = last_dst_char;
+  }
+}
+#else
+void speex_memcpy_bytes(char *dst, char *src, int nbytes)
+{
+  memcpy(dst, src, nbytes);
+}
+void speex_memset_bytes(char *dst, char src, int nbytes)
+{
+  memset(dst, src, nbytes);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_ALLOC
+void *speex_alloc (int size)
+{
+   return calloc(size,1);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_ALLOC_SCRATCH
+void *speex_alloc_scratch (int size)
+{
+   return calloc(size,1);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_REALLOC
+void *speex_realloc (void *ptr, int size)
+{
+   return realloc(ptr, size);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_FREE
+void speex_free (void *ptr)
+{
+   free(ptr);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_FREE_SCRATCH
+void speex_free_scratch (void *ptr)
+{
+   free(ptr);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_MOVE
+void *speex_move (void *dest, void *src, int n)
+{
+   return memmove(dest,src,n);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_ERROR
+void speex_error(const char *str)
+{
+   fprintf (stderr, "Fatal error: %s\n", str);
+   exit(1);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_WARNING
+void speex_warning(const char *str)
+{
+   fprintf (stderr, "warning: %s\n", str);
+}
+#endif
+
+#ifndef OVERRIDE_SPEEX_WARNING_INT
+void speex_warning_int(const char *str, int val)
+{
+   fprintf (stderr, "warning: %s %d\n", str, val);
+}
+#endif
+
+#ifdef FIXED_POINT
+spx_word32_t speex_rand(spx_word16_t std, spx_int32_t *seed)
+{
+   spx_word32_t res;
+   *seed = 1664525 * *seed + 1013904223;
+   res = MULT16_16(EXTRACT16(SHR32(*seed,16)),std);
+   return SUB32(res, SHR(res, 3));
+}
+#else
+spx_word16_t speex_rand(spx_word16_t std, spx_int32_t *seed)
+{
+   const unsigned int jflone = 0x3f800000;
+   const unsigned int jflmsk = 0x007fffff;
+   union {int i; float f;} ran;
+   *seed = 1664525 * *seed + 1013904223;
+   ran.i = jflone | (jflmsk & *seed);
+   ran.f -= 1.5;
+   return 3.4642*std*ran.f;
+}
+#endif
+
+void speex_rand_vec(float std, spx_sig_t *data, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+      data[i]+=SIG_SCALING*3*std*((((float)rand())/RAND_MAX)-.5);
+}
+
+
+/*float speex_rand(float std)
+{
+   return 3*std*((((float)rand())/RAND_MAX)-.5);
+}*/
+
+#ifndef OVERRIDE_SPEEX_PUTC
+void _speex_putc(int ch, void *file)
+{
+   FILE *f = (FILE *)file;
+   fprintf(f, "%c", ch);
+}
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/misc.h b/pjmedia/src/pjmedia-codec/speex/misc.h
new file mode 100644
index 00000000..2e69b20e
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/misc.h
@@ -0,0 +1,100 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file misc.h
+   @brief Various compatibility routines for Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef MISC_H
+#define MISC_H
+
+#ifndef SPEEX_VERSION
+#define SPEEX_MAJOR_VERSION 1         /**< Major Speex version. */
+#define SPEEX_MINOR_VERSION 1         /**< Minor Speex version. */
+#define SPEEX_MICRO_VERSION 12        /**< Micro Speex version. */
+#define SPEEX_EXTRA_VERSION ""        /**< Extra Speex version. */
+#define SPEEX_VERSION "speex-1.1.12"  /**< Speex version string. */
+#endif
+
+#include "arch.h"
+
+#ifndef RELEASE
+/** Print a named vector to stdout */
+void print_vec(float *vec, int len, char *name);
+#endif
+
+/** Convert big endian */
+spx_uint32_t be_int(spx_uint32_t i);
+/** Convert little endian */
+spx_uint32_t le_int(spx_uint32_t i);
+
+/** Speex wrapper for calloc. To do your own dynamic allocation, all you need to do is replace this function, speex_realloc and speex_free */
+void *speex_alloc (int size);
+
+/** Same as speex_alloc, except that the area is only needed inside a Speex call (might cause problem with wideband though) */
+void *speex_alloc_scratch (int size);
+
+/** Speex wrapper for realloc. To do your own dynamic allocation, all you need to do is replace this function, speex_alloc and speex_free */
+void *speex_realloc (void *ptr, int size);
+
+/** Speex wrapper for calloc. To do your own dynamic allocation, all you need to do is replace this function, speex_realloc and speex_alloc */
+void speex_free (void *ptr);
+
+/** Same as speex_alloc, except that the area is only needed inside a Speex call (might cause problem with wideband though) */
+void speex_free_scratch (void *ptr);
+
+/** Speex wrapper for mem_move */
+void *speex_move (void *dest, void *src, int n);
+
+/** Speex wrapper for memcpy */
+void speex_memcpy_bytes(char *dst, char *src, int nbytes);
+
+/** Speex wrapper for memset */
+void speex_memset_bytes(char *dst, char src, int nbytes);
+
+/** Print error message to stderr */
+void speex_error(const char *str);
+
+/** Print warning message to stderr */
+void speex_warning(const char *str);
+
+/** Print warning message with integer argument to stderr */
+void speex_warning_int(const char *str, int val);
+
+/** Generate a vector of random numbers */
+void speex_rand_vec(float std, spx_sig_t *data, int len);
+
+/** Generate a random number */
+spx_word32_t speex_rand(spx_word16_t std, spx_int32_t *seed);
+
+/** Speex wrapper for putc */
+void _speex_putc(int ch, void *file);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/misc_bfin.h b/pjmedia/src/pjmedia-codec/speex/misc_bfin.h
new file mode 100644
index 00000000..77b082c0
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/misc_bfin.h
@@ -0,0 +1,54 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file misc_bfin.h
+   @author Jean-Marc Valin 
+   @brief Various compatibility routines for Speex (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_SPEEX_MOVE
+void *speex_move (void *dest, void *src, int n)
+{
+   __asm__ __volatile__
+         (
+         "L0 = 0;\n\t"
+         "I0 = %0;\n\t"
+         "R0 = [I0++];\n\t"
+         "LOOP move%= LC0 = %2;\n\t"
+         "LOOP_BEGIN move%=;\n\t"
+            "[%1++] = R0 || R0 = [I0++];\n\t"
+         "LOOP_END move%=;\n\t"
+         "[%1++] = R0;\n\t"
+   : "=a" (src), "=a" (dest)
+   : "a" ((n>>2)-1), "0" (src), "1" (dest)
+   : "R0", "I0", "L0", "memory"
+         );
+   return dest;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/modes.c b/pjmedia/src/pjmedia-codec/speex/modes.c
new file mode 100644
index 00000000..aa15729b
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/modes.c
@@ -0,0 +1,722 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: modes.c
+
+   Describes the different modes of the codec
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "modes.h"
+#include "ltp.h"
+#include "quant_lsp.h"
+#include "cb_search.h"
+#include "sb_celp.h"
+#include "nb_celp.h"
+#include "vbr.h"
+#include "misc.h"
+#include <math.h>
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#define MAX_IN_SAMPLES 640
+
+const SpeexMode * const speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode};
+
+/* Extern declarations for all codebooks we use here */
+extern const signed char gain_cdbk_nb[];
+extern const signed char gain_cdbk_lbr[];
+extern const signed char hexc_table[];
+extern const signed char exc_5_256_table[];
+extern const signed char exc_5_64_table[];
+extern const signed char exc_8_128_table[];
+extern const signed char exc_10_32_table[];
+extern const signed char exc_10_16_table[];
+extern const signed char exc_20_32_table[];
+extern const signed char hexc_10_32_table[];
+
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static const ltp_params ltp_params_nb = {
+   gain_cdbk_nb,
+   7,
+   7
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static const ltp_params ltp_params_vlbr = {
+   gain_cdbk_lbr,
+   5,
+   0
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static const ltp_params ltp_params_lbr = {
+   gain_cdbk_lbr,
+   5,
+   7
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static const ltp_params ltp_params_med = {
+   gain_cdbk_lbr,
+   5,
+   7
+};
+
+/* Split-VQ innovation parameters for very low bit-rate narrowband */
+static const split_cb_params split_cb_nb_vlbr = {
+   10,               /*subvect_size*/
+   4,               /*nb_subvect*/
+   exc_10_16_table, /*shape_cb*/
+   4,               /*shape_bits*/
+   0,
+};
+
+/* Split-VQ innovation parameters for very low bit-rate narrowband */
+static const split_cb_params split_cb_nb_ulbr = {
+   20,               /*subvect_size*/
+   2,               /*nb_subvect*/
+   exc_20_32_table, /*shape_cb*/
+   5,               /*shape_bits*/
+   0,
+};
+
+/* Split-VQ innovation parameters for low bit-rate narrowband */
+static const split_cb_params split_cb_nb_lbr = {
+   10,              /*subvect_size*/
+   4,               /*nb_subvect*/
+   exc_10_32_table, /*shape_cb*/
+   5,               /*shape_bits*/
+   0,
+};
+
+
+/* Split-VQ innovation parameters narrowband */
+static const split_cb_params split_cb_nb = {
+   5,               /*subvect_size*/
+   8,               /*nb_subvect*/
+   exc_5_64_table, /*shape_cb*/
+   6,               /*shape_bits*/
+   0,
+};
+
+/* Split-VQ innovation parameters narrowband */
+static const split_cb_params split_cb_nb_med = {
+   8,               /*subvect_size*/
+   5,               /*nb_subvect*/
+   exc_8_128_table, /*shape_cb*/
+   7,               /*shape_bits*/
+   0,
+};
+
+/* Split-VQ innovation for low-band wideband */
+static const split_cb_params split_cb_sb = {
+   5,               /*subvect_size*/
+   8,              /*nb_subvect*/
+   exc_5_256_table,    /*shape_cb*/
+   8,               /*shape_bits*/
+   0,
+};
+
+#ifndef DISABLE_WIDEBAND
+
+/* Split-VQ innovation for high-band wideband */
+static const split_cb_params split_cb_high = {
+   8,               /*subvect_size*/
+   5,               /*nb_subvect*/
+   hexc_table,       /*shape_cb*/
+   7,               /*shape_bits*/
+   1,
+};
+
+
+/* Split-VQ innovation for high-band wideband */
+static const split_cb_params split_cb_high_lbr = {
+   10,               /*subvect_size*/
+   4,               /*nb_subvect*/
+   hexc_10_32_table,       /*shape_cb*/
+   5,               /*shape_bits*/
+   0,
+};
+
+#endif
+
+/* 2150 bps "vocoder-like" mode for comfort noise */
+static const SpeexSubmode nb_submode1 = {
+   0,
+   1,
+   0,
+   0,
+   /* LSP quantization */
+   lsp_quant_lbr,
+   lsp_unquant_lbr,
+   /* No pitch quantization */
+   forced_pitch_quant,
+   forced_pitch_unquant,
+   NULL,
+   /* No innovation quantization (noise only) */
+   noise_codebook_quant,
+   noise_codebook_unquant,
+   NULL,
+#ifdef FIXED_POINT
+   22938, 22938, 0, -1,
+#else
+   .7, .7, 0, -1,
+#endif
+   43
+};
+
+/* 3.95 kbps very low bit-rate mode */
+static const SpeexSubmode nb_submode8 = {
+   0,
+   1,
+   0,
+   0,
+   /*LSP quantization*/
+   lsp_quant_lbr,
+   lsp_unquant_lbr,
+   /*No pitch quantization*/
+   forced_pitch_quant,
+   forced_pitch_unquant,
+   NULL,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_ulbr,
+#ifdef FIXED_POINT
+   22938, 16384, 11796, 21299,
+#else
+   0.7, 0.5, .36, .65,
+#endif
+   79
+};
+
+/* 5.95 kbps very low bit-rate mode */
+static const SpeexSubmode nb_submode2 = {
+   0,
+   0,
+   0,
+   0,
+   /*LSP quantization*/
+   lsp_quant_lbr,
+   lsp_unquant_lbr,
+   /*No pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_vlbr,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_vlbr,
+#ifdef FIXED_POINT
+   22938, 16384, 11796, 18022,
+#else
+   0.7, 0.5, .36, .55,
+#endif
+   119
+};
+
+/* 8 kbps low bit-rate mode */
+static const SpeexSubmode nb_submode3 = {
+   -1,
+   0,
+   1,
+   0,
+   /*LSP quantization*/
+   lsp_quant_lbr,
+   lsp_unquant_lbr,
+   /*Pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_lbr,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_lbr,
+#ifdef FIXED_POINT
+   22938, 18022, 9830, 14746,
+#else
+   0.7, 0.55, .30, .45,
+#endif
+   160
+};
+
+/* 11 kbps medium bit-rate mode */
+static const SpeexSubmode nb_submode4 = {
+   -1,
+   0,
+   1,
+   0,
+   /*LSP quantization*/
+   lsp_quant_lbr,
+   lsp_unquant_lbr,
+   /*Pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_med,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_med,
+#ifdef FIXED_POINT
+   22938, 20644, 5243, 11469,
+#else
+   0.7, 0.63, .16, .35,
+#endif
+   220
+};
+
+/* 15 kbps high bit-rate mode */
+static const SpeexSubmode nb_submode5 = {
+   -1,
+   0,
+   3,
+   0,
+   /*LSP quantization*/
+   lsp_quant_nb,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb,
+#ifdef FIXED_POINT
+   22938, 21299, 3932, 8192,
+#else
+   0.7, 0.65, .12, .25,
+#endif
+   300
+};
+
+/* 18.2 high bit-rate mode */
+static const SpeexSubmode nb_submode6 = {
+   -1,
+   0,
+   3,
+   0,
+   /*LSP quantization*/
+   lsp_quant_nb,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_sb,
+#ifdef FIXED_POINT
+   22282, 21299, 2294, 3277,
+#else
+   0.68, 0.65, .07, .1,
+#endif
+   364
+};
+
+/* 24.6 kbps high bit-rate mode */
+static const SpeexSubmode nb_submode7 = {
+   -1,
+   0,
+   3,
+   1,
+   /*LSP quantization*/
+   lsp_quant_nb,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb,
+#ifdef FIXED_POINT
+   21299, 21299, 0, -1,
+#else
+   0.65, 0.65, .0, -1,
+#endif
+   492
+};
+
+
+/* Default mode for narrowband */
+static const SpeexNBMode nb_mode = {
+   160,    /*frameSize*/
+   40,     /*subframeSize*/
+   10,     /*lpcSize*/
+   17,     /*pitchStart*/
+   144,    /*pitchEnd*/
+#ifdef FIXED_POINT
+   29491, 19661, /* gamma1, gamma2 */
+#else
+   0.9, 0.6, /* gamma1, gamma2 */
+#endif
+   .012,   /*lag_factor*/
+   QCONST16(.0002,15), /*lpc_floor*/
+#ifdef EPIC_48K
+   0,
+#endif
+   {NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5, &nb_submode6, &nb_submode7,
+   &nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
+   5,
+   {1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7}
+};
+
+
+/* Default mode for narrowband */
+const SpeexMode speex_nb_mode = {
+   &nb_mode,
+   nb_mode_query,
+   "narrowband",
+   0,
+   4,
+   &nb_encoder_init,
+   &nb_encoder_destroy,
+   &nb_encode,
+   &nb_decoder_init,
+   &nb_decoder_destroy,
+   &nb_decode,
+   &nb_encoder_ctl,
+   &nb_decoder_ctl,
+};
+
+
+/* Wideband part */
+
+static const SpeexSubmode wb_submode1 = {
+   0,
+   0,
+   1,
+   0,
+   /*LSP quantization*/
+   lsp_quant_high,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*No innovation quantization*/
+   NULL,
+   NULL,
+   NULL,
+#ifdef FIXED_POINT
+   24576, 24576, 0, -1,
+#else
+   .75, .75, .0, -1,
+#endif
+   36
+};
+
+
+static const SpeexSubmode wb_submode2 = {
+   0,
+   0,
+   1,
+   0,
+   /*LSP quantization*/
+   lsp_quant_high,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+#ifdef DISABLE_WIDEBAND
+   NULL,
+#else
+   &split_cb_high_lbr,
+#endif
+#ifdef FIXED_POINT
+   27853, 19661, 8192, -1,
+#else
+   .85, .6, .25, -1,
+#endif
+   112
+};
+
+
+static const SpeexSubmode wb_submode3 = {
+   0,
+   0,
+   1,
+   0,
+   /*LSP quantization*/
+   lsp_quant_high,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+#ifdef DISABLE_WIDEBAND
+   NULL,
+#else
+   &split_cb_high,
+#endif
+
+#ifdef FIXED_POINT
+   24576, 22938, 1638, -1,
+#else
+   .75, .7, .05, -1,
+#endif
+   192
+};
+
+static const SpeexSubmode wb_submode4 = {
+   0,
+   0,
+   1,
+   1,
+   /*LSP quantization*/
+   lsp_quant_high,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+#ifdef DISABLE_WIDEBAND
+   NULL,
+#else
+   &split_cb_high,
+#endif
+#ifdef FIXED_POINT
+   24576, 24576, 0, -1,
+#else
+   .75, .75, .0, -1,
+#endif
+   352
+};
+
+
+/* Split-band wideband CELP mode*/
+static const SpeexSBMode sb_wb_mode = {
+   &speex_nb_mode,
+   160,    /*frameSize*/
+   40,     /*subframeSize*/
+   8,     /*lpcSize*/
+   640,    /*bufSize*/
+#ifdef FIXED_POINT
+   29491, 19661, /* gamma1, gamma2 */
+#else
+   0.9, 0.6, /* gamma1, gamma2 */
+#endif
+   .001,   /*lag_factor*/
+   QCONST16(.0001,15), /*lpc_floor*/
+   0.9,
+   {NULL, &wb_submode1, &wb_submode2, &wb_submode3, &wb_submode4, NULL, NULL, NULL},
+   3,
+   {1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7},
+   {1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4},
+   vbr_hb_thresh,
+   5
+};
+
+
+const SpeexMode speex_wb_mode = {
+   &sb_wb_mode,
+   wb_mode_query,
+   "wideband (sub-band CELP)",
+   1,
+   4,
+   &sb_encoder_init,
+   &sb_encoder_destroy,
+   &sb_encode,
+   &sb_decoder_init,
+   &sb_decoder_destroy,
+   &sb_decode,
+   &sb_encoder_ctl,
+   &sb_decoder_ctl,
+};
+
+
+
+/* "Ultra-wideband" mode stuff */
+
+
+
+/* Split-band "ultra-wideband" (32 kbps) CELP mode*/
+static const SpeexSBMode sb_uwb_mode = {
+   &speex_wb_mode,
+   320,    /*frameSize*/
+   80,     /*subframeSize*/
+   8,     /*lpcSize*/
+   1280,    /*bufSize*/
+#ifdef FIXED_POINT
+   29491, 19661, /* gamma1, gamma2 */
+#else
+   0.9, 0.6, /* gamma1, gamma2 */
+#endif
+   .002,   /*lag_factor*/
+   QCONST16(.0001,15), /*lpc_floor*/
+   0.7,
+   {NULL, &wb_submode1, NULL, NULL, NULL, NULL, NULL, NULL},
+   1,
+   {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
+   {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
+   vbr_uhb_thresh,
+   2
+};
+
+
+const SpeexMode speex_uwb_mode = {
+   &sb_uwb_mode,
+   wb_mode_query,
+   "ultra-wideband (sub-band CELP)",
+   2,
+   4,
+   &sb_encoder_init,
+   &sb_encoder_destroy,
+   &sb_encode,
+   &sb_decoder_init,
+   &sb_decoder_destroy,
+   &sb_decode,
+   &sb_encoder_ctl,
+   &sb_decoder_ctl,
+};
+
+
+
+
+#ifdef EPIC_48K
+
+extern const signed char gain_cdbk_ulbr[];
+extern const signed char exc_12_32_table[];
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static const ltp_params ltp_params_48k = {
+   gain_cdbk_ulbr,
+   3,
+   0
+};
+
+static const split_cb_params split_cb_nb_48k = {
+   12,               /*subvect_size*/
+   4,               /*nb_subvect*/
+   exc_12_32_table, /*shape_cb*/
+   5,               /*shape_bits*/
+   0,
+};
+
+
+/* 4.8 kbps very low bit-rate mode */
+static const SpeexSubmode nb_48k_submode = {
+   0,
+   0,
+   0,
+   0,
+   /*LSP quantization*/
+   lsp_quant_48k,
+   lsp_unquant_48k,
+   /*No pitch quantization*/
+   pitch_search_3tap,
+   pitch_unquant_3tap,
+   &ltp_params_48k,
+   /*Innovation quantization*/
+   split_cb_search_shape_sign,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_48k,
+#ifdef FIXED_POINT
+   22938, 16384, 11796, 18022,
+#else
+   0.7, 0.5, .36, .55,
+#endif
+   144
+};
+
+
+/* Special, non-standard 4.8 kbps mode */
+static const SpeexNBMode nb_48k_mode = {
+   240,    /*frameSize*/
+   48,     /*subframeSize*/
+   10,     /*lpcSize*/
+   640,    /*bufSize*/
+   17,     /*pitchStart*/
+   144,    /*pitchEnd*/
+   0.9,    /*gamma1*/
+   0.6,    /*gamma2*/
+   .01,   /*lag_factor*/
+   QCONST16(.0003,15), /*lpc_floor*/
+   1,
+   {NULL, NULL, &nb_48k_submode, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
+   2,
+   {2,2,2,2,2,2,2,2,2,2,2}
+};
+
+
+/* Default mode for narrowband */
+const SpeexMode speex_nb_48k_mode = {
+   &nb_48k_mode,
+   nb_mode_query,
+   "narrowband 4.8 kbps",
+   1000,
+   4,
+   &nb_encoder_init,
+   &nb_encoder_destroy,
+   &nb_encode,
+   &nb_decoder_init,
+   &nb_decoder_destroy,
+   &nb_decode,
+   &nb_encoder_ctl,
+   &nb_decoder_ctl,
+};
+
+
+#endif
+
+int speex_mode_query(const SpeexMode *mode, int request, void *ptr)
+{
+   return mode->query(mode->mode, request, ptr);
+}
+
+const SpeexMode * speex_lib_get_mode (int mode)
+{
+#ifdef EPIC_48K
+  if (mode == SPEEX_MODEID_NB_48K) return &speex_nb_48k_mode;
+#endif
+
+  if (mode < 0 || mode > SPEEX_NB_MODES) return NULL;
+
+  return speex_mode_list[mode];
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/modes.h b/pjmedia/src/pjmedia-codec/speex/modes.h
new file mode 100644
index 00000000..945d0046
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/modes.h
@@ -0,0 +1,153 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file modes.h
+   @brief Describes the different modes of the codec
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef MODES_H
+#define MODES_H
+
+#include <speex/speex.h>
+#include <speex/speex_bits.h>
+#include "misc.h"
+
+#define NB_SUBMODES 16
+#define NB_SUBMODE_BITS 4
+
+#define SB_SUBMODES 8
+#define SB_SUBMODE_BITS 3
+
+
+/** Quantizes LSPs */
+typedef void (*lsp_quant_func)(spx_lsp_t *, spx_lsp_t *, int, SpeexBits *);
+
+/** Decodes quantized LSPs */
+typedef void (*lsp_unquant_func)(spx_lsp_t *, int, SpeexBits *);
+
+
+/** Long-term predictor quantization */
+typedef int (*ltp_quant_func)(spx_sig_t *, spx_sig_t *, spx_coef_t *, spx_coef_t *, 
+                              spx_coef_t *, spx_sig_t *, const void *, int, int, spx_word16_t, 
+                              int, int, SpeexBits*, char *, spx_sig_t *, spx_word16_t *, int, int, int);
+
+/** Long-term un-quantize */
+typedef void (*ltp_unquant_func)(spx_sig_t *, int, int, spx_word16_t, const void *, int, int *,
+                                 spx_word16_t *, SpeexBits*, char*, int, int, spx_word16_t, int);
+
+
+/** Innovation quantization function */
+typedef void (*innovation_quant_func)(spx_sig_t *, spx_coef_t *, spx_coef_t *, spx_coef_t *, const void *, int, int, 
+                                      spx_sig_t *, spx_word16_t *, SpeexBits *, char *, int, int);
+
+/** Innovation unquantization function */
+typedef void (*innovation_unquant_func)(spx_sig_t *, const void *, int, SpeexBits*, char *);
+
+/** Description of a Speex sub-mode (wither narrowband or wideband */
+typedef struct SpeexSubmode {
+   int     lbr_pitch;          /**< Set to -1 for "normal" modes, otherwise encode pitch using a global pitch and allowing a +- lbr_pitch variation (for low not-rates)*/
+   int     forced_pitch_gain;  /**< Use the same (forced) pitch gain for all sub-frames */
+   int     have_subframe_gain; /**< Number of bits to use as sub-frame innovation gain */
+   int     double_codebook;    /**< Apply innovation quantization twice for higher quality (and higher bit-rate)*/
+   /*LSP functions*/
+   lsp_quant_func    lsp_quant; /**< LSP quantization function */
+   lsp_unquant_func  lsp_unquant; /**< LSP unquantization function */
+
+   /*Lont-term predictor functions*/
+   ltp_quant_func    ltp_quant; /**< Long-term predictor (pitch) quantizer */
+   ltp_unquant_func  ltp_unquant; /**< Long-term predictor (pitch) un-quantizer */
+   const void             *ltp_params; /**< Pitch parameters (options) */
+
+   /*Quantization of innovation*/
+   innovation_quant_func innovation_quant; /**< Innovation quantization */
+   innovation_unquant_func innovation_unquant; /**< Innovation un-quantization */
+   const void             *innovation_params; /**< Innovation quantization parameters*/
+
+   /*Synthesis filter enhancement*/
+   spx_word16_t      lpc_enh_k1; /**< Enhancer constant */
+   spx_word16_t      lpc_enh_k2; /**< Enhancer constant */
+   spx_word16_t      lpc_enh_k3; /**< Enhancer constant */
+   spx_word16_t      comb_gain;  /**< Gain of enhancer comb filter */
+
+   int               bits_per_frame; /**< Number of bits per frame after encoding*/
+} SpeexSubmode;
+
+/** Struct defining the encoding/decoding mode*/
+typedef struct SpeexNBMode {
+   int     frameSize;      /**< Size of frames used for encoding */
+   int     subframeSize;   /**< Size of sub-frames used for encoding */
+   int     lpcSize;        /**< Order of LPC filter */
+   int     pitchStart;     /**< Smallest pitch value allowed */
+   int     pitchEnd;       /**< Largest pitch value allowed */
+
+   spx_word16_t gamma1;    /**< Perceptual filter parameter #1 */
+   spx_word16_t gamma2;    /**< Perceptual filter parameter #2 */
+   float   lag_factor;     /**< Lag-windowing parameter */
+   spx_word16_t   lpc_floor;      /**< Noise floor for LPC analysis */
+
+#ifdef EPIC_48K
+   int     lbr48k;         /**< 1 for the special 4.8 kbps mode */
+#endif
+
+   const SpeexSubmode *submodes[NB_SUBMODES]; /**< Sub-mode data for the mode */
+   int     defaultSubmode; /**< Default sub-mode to use when encoding */
+   int     quality_map[11]; /**< Mode corresponding to each quality setting */
+} SpeexNBMode;
+
+
+/** Struct defining the encoding/decoding mode for SB-CELP (wideband) */
+typedef struct SpeexSBMode {
+   const SpeexMode *nb_mode;    /**< Embedded narrowband mode */
+   int     frameSize;     /**< Size of frames used for encoding */
+   int     subframeSize;  /**< Size of sub-frames used for encoding */
+   int     lpcSize;       /**< Order of LPC filter */
+   int     bufSize;       /**< Signal buffer size in encoder */
+   spx_word16_t gamma1;   /**< Perceptual filter parameter #1 */
+   spx_word16_t gamma2;   /**< Perceptual filter parameter #1 */
+   float   lag_factor;    /**< Lag-windowing parameter */
+   spx_word16_t   lpc_floor;     /**< Noise floor for LPC analysis */
+   float   folding_gain;
+
+   const SpeexSubmode *submodes[SB_SUBMODES]; /**< Sub-mode data for the mode */
+   int     defaultSubmode; /**< Default sub-mode to use when encoding */
+   int     low_quality_map[11]; /**< Mode corresponding to each quality setting */
+   int     quality_map[11]; /**< Mode corresponding to each quality setting */
+   const float (*vbr_thresh)[11];
+   int     nb_modes;
+} SpeexSBMode;
+
+int speex_encode_native(void *state, spx_word16_t *in, SpeexBits *bits);
+int speex_decode_native(void *state, SpeexBits *bits, spx_word16_t *out);
+
+int nb_mode_query(const void *mode, int request, void *ptr);
+int wb_mode_query(const void *mode, int request, void *ptr);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/nb_celp.c b/pjmedia/src/pjmedia-codec/speex/nb_celp.c
new file mode 100644
index 00000000..f6f5c692
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/nb_celp.c
@@ -0,0 +1,2085 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: nb_celp.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "nb_celp.h"
+#include "lpc.h"
+#include "lsp.h"
+#include "ltp.h"
+#include "quant_lsp.h"
+#include "cb_search.h"
+#include "filters.h"
+#include "stack_alloc.h"
+#include "vq.h"
+#include <speex/speex_bits.h>
+#include "vbr.h"
+#include "misc.h"
+#include <speex/speex_callbacks.h>
+
+#ifdef VORBIS_PSYCHO
+#include "vorbis_psy.h"
+#endif
+
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#define SUBMODE(x) st->submodes[st->submodeID]->x
+
+/* Default size for the encoder and decoder stack (can be changed at compile time).
+   This does not apply when using variable-size arrays or alloca. */
+#ifndef NB_ENC_STACK
+#define NB_ENC_STACK (8000*sizeof(spx_sig_t))
+#endif
+
+#ifndef NB_DEC_STACK
+#define NB_DEC_STACK (4000*sizeof(spx_sig_t))
+#endif
+
+
+#ifdef FIXED_POINT
+const spx_word32_t ol_gain_table[32]={18900, 25150, 33468, 44536, 59265, 78865, 104946, 139653, 185838, 247297, 329081, 437913, 582736, 775454, 1031906, 1373169, 1827293, 2431601, 3235761, 4305867, 5729870, 7624808, 10146425, 13501971, 17967238, 23909222, 31816294, 42338330, 56340132, 74972501, 99766822, 132760927};
+const spx_word16_t exc_gain_quant_scal3_bound[7]={1841, 3883, 6051, 8062, 10444, 13580, 18560};
+const spx_word16_t exc_gain_quant_scal3[8]={1002, 2680, 5086, 7016, 9108, 11781, 15380, 21740};
+const spx_word16_t exc_gain_quant_scal1_bound[1]={14385};
+const spx_word16_t exc_gain_quant_scal1[2]={11546, 17224};
+
+#define LSP_MARGIN 16
+#define LSP_DELTA1 6553
+#define LSP_DELTA2 1638
+
+#else
+
+const float exc_gain_quant_scal3_bound[7]={0.112338, 0.236980, 0.369316, 0.492054, 0.637471, 0.828874, 1.132784};
+const float exc_gain_quant_scal3[8]={0.061130, 0.163546, 0.310413, 0.428220, 0.555887, 0.719055, 0.938694, 1.326874};
+const float exc_gain_quant_scal1_bound[1]={0.87798};
+const float exc_gain_quant_scal1[2]={0.70469, 1.05127};
+
+#define LSP_MARGIN .002
+#define LSP_DELTA1 .2
+#define LSP_DELTA2 .05
+
+#endif
+
+#ifdef VORBIS_PSYCHO
+#define EXTRA_BUFFER 100
+#else
+#define EXTRA_BUFFER 0
+#endif
+
+
+#define sqr(x) ((x)*(x))
+
+void *nb_encoder_init(const SpeexMode *m)
+{
+   EncState *st;
+   const SpeexNBMode *mode;
+   int i;
+
+   mode=(const SpeexNBMode *)m->mode;
+   st = (EncState*)speex_alloc(sizeof(EncState));
+   if (!st)
+      return NULL;
+#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
+   st->stack = NULL;
+#else
+   st->stack = (char*)speex_alloc_scratch(NB_ENC_STACK);
+#endif
+   
+   st->mode=m;
+
+   st->frameSize = mode->frameSize;
+   st->windowSize = st->frameSize*3/2;
+   st->nbSubframes=mode->frameSize/mode->subframeSize;
+   st->subframeSize=mode->subframeSize;
+   st->lpcSize = mode->lpcSize;
+   st->gamma1=mode->gamma1;
+   st->gamma2=mode->gamma2;
+   st->min_pitch=mode->pitchStart;
+   st->max_pitch=mode->pitchEnd;
+   st->lag_factor=mode->lag_factor;
+   st->lpc_floor = mode->lpc_floor;
+  
+   st->submodes=mode->submodes;
+   st->submodeID=st->submodeSelect=mode->defaultSubmode;
+   st->bounded_pitch = 1;
+
+   st->encode_submode = 1;
+#ifdef EPIC_48K
+   st->lbr_48k=mode->lbr48k;
+#endif
+
+#ifdef VORBIS_PSYCHO
+   st->psy = vorbis_psy_init(8000, 256);
+   st->curve = speex_alloc(128*sizeof(float));
+   st->old_curve = speex_alloc(128*sizeof(float));
+#endif
+
+   /* Allocating input buffer */
+   st->inBuf = speex_alloc((st->windowSize+EXTRA_BUFFER)*sizeof(spx_sig_t));
+   st->frame = st->inBuf+EXTRA_BUFFER;
+   /* Allocating excitation buffer */
+   st->excBuf = speex_alloc((mode->frameSize+mode->pitchEnd+1)*sizeof(spx_sig_t));
+   st->exc = st->excBuf + mode->pitchEnd + 1;
+   st->swBuf = speex_alloc((mode->frameSize+mode->pitchEnd+1)*sizeof(spx_sig_t));
+   st->sw = st->swBuf + mode->pitchEnd + 1;
+
+   st->innov = speex_alloc((st->frameSize)*sizeof(spx_sig_t));
+
+   /* Asymmetric "pseudo-Hamming" window */
+   {
+      int part1, part2;
+      part1=st->frameSize - (st->subframeSize>>1);
+      part2=(st->frameSize>>1) + (st->subframeSize>>1);
+      st->window = speex_alloc((st->windowSize)*sizeof(spx_word16_t));
+      for (i=0;i<part1;i++)
+         st->window[i]=(spx_word16_t)(SIG_SCALING*(.54-.46*cos(M_PI*i/part1)));
+      for (i=0;i<part2;i++)
+         st->window[part1+i]=(spx_word16_t)(SIG_SCALING*(.54+.46*cos(M_PI*i/part2)));
+   }
+   /* Create the window for autocorrelation (lag-windowing) */
+   st->lagWindow = speex_alloc((st->lpcSize+1)*sizeof(spx_word16_t));
+   for (i=0;i<st->lpcSize+1;i++)
+      st->lagWindow[i]=16384*exp(-.5*sqr(2*M_PI*st->lag_factor*i));
+
+   st->autocorr = speex_alloc((st->lpcSize+1)*sizeof(spx_word16_t));
+
+   st->lpc = speex_alloc((st->lpcSize)*sizeof(spx_coef_t));
+   st->interp_lpc = speex_alloc((st->lpcSize)*sizeof(spx_coef_t));
+   st->interp_qlpc = speex_alloc((st->lpcSize)*sizeof(spx_coef_t));
+   st->bw_lpc1 = speex_alloc((st->lpcSize)*sizeof(spx_coef_t));
+   st->bw_lpc2 = speex_alloc((st->lpcSize)*sizeof(spx_coef_t));
+
+   st->lsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->qlsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->old_lsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->old_qlsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->interp_lsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->interp_qlsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+
+   st->first = 1;
+   for (i=0;i<st->lpcSize;i++)
+   {
+      st->lsp[i]=LSP_SCALING*(M_PI*((float)(i+1)))/(st->lpcSize+1);
+   }
+
+   st->mem_sp = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+   st->mem_sw = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+   st->mem_sw_whole = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+   st->mem_exc = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+
+   st->pi_gain = speex_alloc((st->nbSubframes)*sizeof(spx_word32_t));
+
+   st->pitch = speex_alloc((st->nbSubframes)*sizeof(int));
+
+   st->vbr = speex_alloc(sizeof(VBRState));
+   vbr_init(st->vbr);
+   st->vbr_quality = 8;
+   st->vbr_enabled = 0;
+   st->vad_enabled = 0;
+   st->dtx_enabled = 0;
+   st->abr_enabled = 0;
+   st->abr_drift = 0;
+
+   st->plc_tuning = 2;
+   st->complexity=2;
+   st->sampling_rate=8000;
+   st->dtx_count=0;
+
+#ifdef ENABLE_VALGRIND
+   VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#endif
+   return st;
+}
+
+void nb_encoder_destroy(void *state)
+{
+   EncState *st=(EncState *)state;
+   /* Free all allocated memory */
+#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
+   speex_free_scratch(st->stack);
+#endif
+
+   speex_free (st->inBuf);
+   speex_free (st->excBuf);
+   speex_free (st->innov);
+   speex_free (st->interp_qlpc);
+   speex_free (st->qlsp);
+   speex_free (st->old_qlsp);
+   speex_free (st->interp_qlsp);
+   speex_free (st->swBuf);
+
+   speex_free (st->window);
+   speex_free (st->lagWindow);
+   speex_free (st->autocorr);
+   speex_free (st->lpc);
+   speex_free (st->lsp);
+
+   speex_free (st->interp_lpc);
+   speex_free (st->bw_lpc1);
+   speex_free (st->bw_lpc2);
+   speex_free (st->old_lsp);
+   speex_free (st->interp_lsp);
+   speex_free (st->mem_sp);
+   speex_free (st->mem_sw);
+   speex_free (st->mem_sw_whole);
+   speex_free (st->mem_exc);
+   speex_free (st->pi_gain);
+   speex_free (st->pitch);
+
+   vbr_destroy(st->vbr);
+   speex_free (st->vbr);
+
+#ifdef VORBIS_PSYCHO
+   vorbis_psy_destroy(st->psy);
+   speex_free (st->curve);
+   speex_free (st->old_curve);
+#endif
+
+   /*Free state memory... should be last*/
+   speex_free(st);
+}
+
+int nb_encode(void *state, void *vin, SpeexBits *bits)
+{
+   EncState *st;
+   int i, sub, roots;
+   int ol_pitch;
+   spx_word16_t ol_pitch_coef;
+   spx_word32_t ol_gain;
+   VARDECL(spx_sig_t *res);
+   VARDECL(spx_sig_t *target);
+   VARDECL(spx_mem_t *mem);
+   char *stack;
+   VARDECL(spx_word16_t *syn_resp);
+   VARDECL(spx_sig_t *real_exc);
+#ifdef EPIC_48K
+   int pitch_half[2];
+   int ol_pitch_id=0;
+#endif
+   spx_word16_t *in = vin;
+
+   st=(EncState *)state;
+   stack=st->stack;
+
+   /* Copy new data in input buffer */
+   speex_move(st->inBuf, st->inBuf+st->frameSize, (EXTRA_BUFFER+st->windowSize-st->frameSize)*sizeof(spx_sig_t));
+   for (i=0;i<st->frameSize;i++)
+      st->inBuf[st->windowSize-st->frameSize+i+EXTRA_BUFFER] = SHL32(EXTEND32(in[i]), SIG_SHIFT);
+
+   /* Move signals 1 frame towards the past */
+   speex_move(st->excBuf, st->excBuf+st->frameSize, (st->max_pitch+1)*sizeof(spx_sig_t));
+   speex_move(st->swBuf, st->swBuf+st->frameSize, (st->max_pitch+1)*sizeof(spx_sig_t));
+
+   {
+      VARDECL(spx_word16_t *w_sig);
+      ALLOC(w_sig, st->windowSize, spx_word16_t);
+      /* Window for analysis */
+      for (i=0;i<st->windowSize;i++)
+         w_sig[i] = EXTRACT16(SHR32(MULT16_16(EXTRACT16(SHR32(st->frame[i],SIG_SHIFT)),st->window[i]),SIG_SHIFT));
+
+      /* Compute auto-correlation */
+      _spx_autocorr(w_sig, st->autocorr, st->lpcSize+1, st->windowSize);
+   }
+   st->autocorr[0] = ADD16(st->autocorr[0],MULT16_16_Q15(st->autocorr[0],st->lpc_floor)); /* Noise floor in auto-correlation domain */
+
+   /* Lag windowing: equivalent to filtering in the power-spectrum domain */
+   for (i=0;i<st->lpcSize+1;i++)
+      st->autocorr[i] = MULT16_16_Q14(st->autocorr[i],st->lagWindow[i]);
+
+   /* Levinson-Durbin */
+   _spx_lpc(st->lpc, st->autocorr, st->lpcSize);
+
+   /* LPC to LSPs (x-domain) transform */
+   roots=lpc_to_lsp (st->lpc, st->lpcSize, st->lsp, 15, LSP_DELTA1, stack);
+   /* Check if we found all the roots */
+   if (roots!=st->lpcSize)
+   {
+      /* Search again if we can afford it */
+      if (st->complexity>1)
+         roots = lpc_to_lsp (st->lpc, st->lpcSize, st->lsp, 11, LSP_DELTA2, stack);
+      if (roots!=st->lpcSize) 
+      {
+         /*If we can't find all LSP's, do some damage control and use previous filter*/
+         for (i=0;i<st->lpcSize;i++)
+         {
+            st->lsp[i]=st->old_lsp[i];
+         }
+      }
+   }
+
+
+
+   /* Whole frame analysis (open-loop estimation of pitch and excitation gain) */
+   {
+      if (st->first)
+         for (i=0;i<st->lpcSize;i++)
+            st->interp_lsp[i] = st->lsp[i];
+      else
+         lsp_interpolate(st->old_lsp, st->lsp, st->interp_lsp, st->lpcSize, st->nbSubframes, st->nbSubframes<<1);
+
+      lsp_enforce_margin(st->interp_lsp, st->lpcSize, LSP_MARGIN);
+
+      /* Compute interpolated LPCs (unquantized) for whole frame*/
+      lsp_to_lpc(st->interp_lsp, st->interp_lpc, st->lpcSize,stack);
+
+
+      /*Open-loop pitch*/
+      if (!st->submodes[st->submodeID] || st->vbr_enabled || st->vad_enabled || SUBMODE(forced_pitch_gain) ||
+          SUBMODE(lbr_pitch) != -1)
+      {
+         int nol_pitch[6];
+         spx_word16_t nol_pitch_coef[6];
+         
+         bw_lpc(st->gamma1, st->interp_lpc, st->bw_lpc1, st->lpcSize);
+         bw_lpc(st->gamma2, st->interp_lpc, st->bw_lpc2, st->lpcSize);
+         
+         filter_mem2(st->frame, st->bw_lpc1, st->bw_lpc2, st->sw, st->frameSize, st->lpcSize, st->mem_sw_whole);
+
+         open_loop_nbest_pitch(st->sw, st->min_pitch, st->max_pitch, st->frameSize, 
+                               nol_pitch, nol_pitch_coef, 6, stack);
+         ol_pitch=nol_pitch[0];
+         ol_pitch_coef = nol_pitch_coef[0];
+         /*Try to remove pitch multiples*/
+         for (i=1;i<6;i++)
+         {
+#ifdef FIXED_POINT
+            if ((nol_pitch_coef[i]>MULT16_16_Q15(nol_pitch_coef[0],27853)) && 
+#else
+            if ((nol_pitch_coef[i]>.85*nol_pitch_coef[0]) && 
+#endif
+                (ABS(2*nol_pitch[i]-ol_pitch)<=2 || ABS(3*nol_pitch[i]-ol_pitch)<=3 || 
+                 ABS(4*nol_pitch[i]-ol_pitch)<=4 || ABS(5*nol_pitch[i]-ol_pitch)<=5))
+            {
+               /*ol_pitch_coef=nol_pitch_coef[i];*/
+               ol_pitch = nol_pitch[i];
+            }
+         }
+         /*if (ol_pitch>50)
+           ol_pitch/=2;*/
+         /*ol_pitch_coef = sqrt(ol_pitch_coef);*/
+
+#ifdef EPIC_48K
+         if (st->lbr_48k)
+         {
+            if (ol_pitch < st->min_pitch+2)
+               ol_pitch = st->min_pitch+2;
+            if (ol_pitch > st->max_pitch-2)
+               ol_pitch = st->max_pitch-2;
+            open_loop_nbest_pitch(st->sw, ol_pitch-2, ol_pitch+2, st->frameSize>>1, 
+                                  &pitch_half[0], nol_pitch_coef, 1, stack);
+            open_loop_nbest_pitch(st->sw+(st->frameSize>>1), pitch_half[0]-1, pitch_half[0]+2, st->frameSize>>1, 
+                                  &pitch_half[1], nol_pitch_coef, 1, stack);
+         }
+#endif
+      } else {
+         ol_pitch=0;
+         ol_pitch_coef=0;
+      }
+      /*Compute "real" excitation*/
+      fir_mem2(st->frame, st->interp_lpc, st->exc, st->frameSize, st->lpcSize, st->mem_exc);
+
+      /* Compute open-loop excitation gain */
+#ifdef EPIC_48K
+      if (st->lbr_48k)
+      {
+         float ol1=0,ol2=0;
+         float ol_gain2;
+         ol1 = compute_rms(st->exc, st->frameSize>>1);
+         ol2 = compute_rms(st->exc+(st->frameSize>>1), st->frameSize>>1);
+         ol1 *= ol1*(st->frameSize>>1);
+         ol2 *= ol2*(st->frameSize>>1);
+
+         ol_gain2=ol1;
+         if (ol2>ol1)
+            ol_gain2=ol2;
+         ol_gain2 = sqrt(2*ol_gain2*(ol1+ol2))*1.3*(1-.5*GAIN_SCALING_1*GAIN_SCALING_1*ol_pitch_coef*ol_pitch_coef);
+      
+         ol_gain=SHR(sqrt(1+ol_gain2/st->frameSize),SIG_SHIFT);
+
+      } else {
+#endif
+         ol_gain = SHL32(EXTEND32(compute_rms(st->exc, st->frameSize)),SIG_SHIFT);
+#ifdef EPIC_48K
+      }
+#endif
+   }
+
+#ifdef VORBIS_PSYCHO
+   compute_curve(st->psy, st->frame-16, st->curve);
+   /*print_vec(st->curve, 128, "curve");*/
+   if (st->first)
+      for (i=0;i<128;i++)
+         st->old_curve[i] = st->curve[i];
+#endif
+
+   /*VBR stuff*/
+   if (st->vbr && (st->vbr_enabled||st->vad_enabled))
+   {
+      float lsp_dist=0;
+      for (i=0;i<st->lpcSize;i++)
+         lsp_dist += (st->old_lsp[i] - st->lsp[i])*(st->old_lsp[i] - st->lsp[i]);
+      lsp_dist /= LSP_SCALING*LSP_SCALING;
+      
+      if (st->abr_enabled)
+      {
+         float qual_change=0;
+         if (st->abr_drift2 * st->abr_drift > 0)
+         {
+            /* Only adapt if long-term and short-term drift are the same sign */
+            qual_change = -.00001*st->abr_drift/(1+st->abr_count);
+            if (qual_change>.05)
+               qual_change=.05;
+            if (qual_change<-.05)
+               qual_change=-.05;
+         }
+         st->vbr_quality += qual_change;
+         if (st->vbr_quality>10)
+            st->vbr_quality=10;
+         if (st->vbr_quality<0)
+            st->vbr_quality=0;
+      }
+
+      st->relative_quality = vbr_analysis(st->vbr, in, st->frameSize, ol_pitch, GAIN_SCALING_1*ol_pitch_coef);
+      /*if (delta_qual<0)*/
+      /*  delta_qual*=.1*(3+st->vbr_quality);*/
+      if (st->vbr_enabled) 
+      {
+         int mode;
+         int choice=0;
+         float min_diff=100;
+         mode = 8;
+         while (mode)
+         {
+            int v1;
+            float thresh;
+            v1=(int)floor(st->vbr_quality);
+            if (v1==10)
+               thresh = vbr_nb_thresh[mode][v1];
+            else
+               thresh = (st->vbr_quality-v1)*vbr_nb_thresh[mode][v1+1] + (1+v1-st->vbr_quality)*vbr_nb_thresh[mode][v1];
+            if (st->relative_quality > thresh && 
+                st->relative_quality-thresh<min_diff)
+            {
+               choice = mode;
+               min_diff = st->relative_quality-thresh;
+            }
+            mode--;
+         }
+         mode=choice;
+         if (mode==0)
+         {
+            if (st->dtx_count==0 || lsp_dist>.05 || !st->dtx_enabled || st->dtx_count>20)
+            {
+               mode=1;
+               st->dtx_count=1;
+            } else {
+               mode=0;
+               st->dtx_count++;
+            }
+         } else {
+            st->dtx_count=0;
+         }
+
+         speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);
+
+         if (st->abr_enabled)
+         {
+            int bitrate;
+            speex_encoder_ctl(state, SPEEX_GET_BITRATE, &bitrate);
+            st->abr_drift+=(bitrate-st->abr_enabled);
+            st->abr_drift2 = .95*st->abr_drift2 + .05*(bitrate-st->abr_enabled);
+            st->abr_count += 1.0;
+         }
+
+      } else {
+         /*VAD only case*/
+         int mode;
+         if (st->relative_quality<2)
+         {
+            if (st->dtx_count==0 || lsp_dist>.05 || !st->dtx_enabled || st->dtx_count>20)
+            {
+               st->dtx_count=1;
+               mode=1;
+            } else {
+               mode=0;
+               st->dtx_count++;
+            }
+         } else {
+            st->dtx_count = 0;
+            mode=st->submodeSelect;
+         }
+         /*speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);*/
+         st->submodeID=mode;
+      } 
+   } else {
+      st->relative_quality = -1;
+   }
+
+   if (st->encode_submode)
+   {
+#ifdef EPIC_48K
+   if (!st->lbr_48k) {
+#endif
+
+   /* First, transmit a zero for narrowband */
+   speex_bits_pack(bits, 0, 1);
+
+   /* Transmit the sub-mode we use for this frame */
+   speex_bits_pack(bits, st->submodeID, NB_SUBMODE_BITS);
+
+#ifdef EPIC_48K
+   }
+#endif
+   }
+
+   /* If null mode (no transmission), just set a couple things to zero*/
+   if (st->submodes[st->submodeID] == NULL)
+   {
+      for (i=0;i<st->frameSize;i++)
+         st->exc[i]=st->sw[i]=VERY_SMALL;
+
+      for (i=0;i<st->lpcSize;i++)
+         st->mem_sw[i]=0;
+      st->first=1;
+      st->bounded_pitch = 1;
+
+      /* Final signal synthesis from excitation */
+      iir_mem2(st->exc, st->interp_qlpc, st->frame, st->frameSize, st->lpcSize, st->mem_sp);
+
+#ifdef RESYNTH
+      for (i=0;i<st->frameSize;i++)
+         in[i]=st->frame[i];
+#endif
+      return 0;
+
+   }
+
+   /* LSP Quantization */
+   if (st->first)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_lsp[i] = st->lsp[i];
+   }
+
+
+   /*Quantize LSPs*/
+#if 1 /*0 for unquantized*/
+   SUBMODE(lsp_quant)(st->lsp, st->qlsp, st->lpcSize, bits);
+#else
+   for (i=0;i<st->lpcSize;i++)
+     st->qlsp[i]=st->lsp[i];
+#endif
+
+#ifdef EPIC_48K
+   if (st->lbr_48k) {
+      speex_bits_pack(bits, pitch_half[0]-st->min_pitch, 7);
+      speex_bits_pack(bits, pitch_half[1]-pitch_half[0]+1, 2);
+      
+      {
+         int quant = (int)floor(.5+7.4*GAIN_SCALING_1*ol_pitch_coef);
+         if (quant>7)
+            quant=7;
+         if (quant<0)
+            quant=0;
+         ol_pitch_id=quant;
+         speex_bits_pack(bits, quant, 3);
+         ol_pitch_coef=GAIN_SCALING*0.13514*quant;
+         
+      }
+      {
+         int qe = (int)(floor(.5+2.1*log(ol_gain*1.0/SIG_SCALING)))-2;
+         if (qe<0)
+            qe=0;
+         if (qe>15)
+            qe=15;
+         ol_gain = exp((qe+2)/2.1)*SIG_SCALING;
+         speex_bits_pack(bits, qe, 4);
+      }
+
+   } else {
+#endif
+
+   /*If we use low bit-rate pitch mode, transmit open-loop pitch*/
+   if (SUBMODE(lbr_pitch)!=-1)
+   {
+      speex_bits_pack(bits, ol_pitch-st->min_pitch, 7);
+   } 
+
+   if (SUBMODE(forced_pitch_gain))
+   {
+      int quant;
+      quant = (int)floor(.5+15*ol_pitch_coef*GAIN_SCALING_1);
+      if (quant>15)
+         quant=15;
+      if (quant<0)
+         quant=0;
+      speex_bits_pack(bits, quant, 4);
+      ol_pitch_coef=GAIN_SCALING*0.066667*quant;
+   }
+   
+   
+   /*Quantize and transmit open-loop excitation gain*/
+#ifdef FIXED_POINT
+   {
+      int qe = scal_quant32(ol_gain, ol_gain_table, 32);
+      /*ol_gain = exp(qe/3.5)*SIG_SCALING;*/
+      ol_gain = MULT16_32_Q15(28406,ol_gain_table[qe]);
+      speex_bits_pack(bits, qe, 5);
+   }
+#else
+   {
+      int qe = (int)(floor(.5+3.5*log(ol_gain*1.0/SIG_SCALING)));
+      if (qe<0)
+         qe=0;
+      if (qe>31)
+         qe=31;
+      ol_gain = exp(qe/3.5)*SIG_SCALING;
+      speex_bits_pack(bits, qe, 5);
+   }
+#endif
+
+
+#ifdef EPIC_48K
+   }
+#endif
+
+
+   /* Special case for first frame */
+   if (st->first)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_qlsp[i] = st->qlsp[i];
+   }
+
+   /* Filter response */
+   ALLOC(res, st->subframeSize, spx_sig_t);
+   /* Target signal */
+   ALLOC(target, st->subframeSize, spx_sig_t);
+   ALLOC(syn_resp, st->subframeSize, spx_word16_t);
+   ALLOC(real_exc, st->subframeSize, spx_sig_t);
+   ALLOC(mem, st->lpcSize, spx_mem_t);
+
+   /* Loop on sub-frames */
+   for (sub=0;sub<st->nbSubframes;sub++)
+   {
+      int   offset;
+      spx_sig_t *sp, *sw, *exc;
+      int pitch;
+      int response_bound = st->subframeSize;
+#ifdef EPIC_48K
+      if (st->lbr_48k)
+      {
+         if (sub*2 < st->nbSubframes)
+            ol_pitch = pitch_half[0];
+         else
+            ol_pitch = pitch_half[1];
+      }
+#endif
+
+      /* Offset relative to start of frame */
+      offset = st->subframeSize*sub;
+      /* Original signal */
+      sp=st->frame+offset;
+      /* Excitation */
+      exc=st->exc+offset;
+      /* Weighted signal */
+      sw=st->sw+offset;
+
+      /* LSP interpolation (quantized and unquantized) */
+      lsp_interpolate(st->old_lsp, st->lsp, st->interp_lsp, st->lpcSize, sub, st->nbSubframes);
+      lsp_interpolate(st->old_qlsp, st->qlsp, st->interp_qlsp, st->lpcSize, sub, st->nbSubframes);
+
+      /* Make sure the filters are stable */
+      lsp_enforce_margin(st->interp_lsp, st->lpcSize, LSP_MARGIN);
+      lsp_enforce_margin(st->interp_qlsp, st->lpcSize, LSP_MARGIN);
+
+      /* Compute interpolated LPCs (quantized and unquantized) */
+      lsp_to_lpc(st->interp_lsp, st->interp_lpc, st->lpcSize,stack);
+
+      lsp_to_lpc(st->interp_qlsp, st->interp_qlpc, st->lpcSize, stack);
+
+      /* Compute analysis filter gain at w=pi (for use in SB-CELP) */
+      {
+         spx_word32_t pi_g=LPC_SCALING;
+         for (i=0;i<st->lpcSize;i+=2)
+         {
+            /*pi_g += -st->interp_qlpc[i] +  st->interp_qlpc[i+1];*/
+            pi_g = ADD32(pi_g, SUB32(st->interp_qlpc[i+1],st->interp_qlpc[i]));
+         }
+         st->pi_gain[sub] = pi_g;
+      }
+
+#ifdef VORBIS_PSYCHO
+      {
+         float curr_curve[128];
+         float fact = ((float)sub+1.0f)/st->nbSubframes;
+         for (i=0;i<128;i++)
+            curr_curve[i] = (1.0f-fact)*st->old_curve[i] + fact*st->curve[i];
+         curve_to_lpc(st->psy, curr_curve, st->bw_lpc1, st->bw_lpc2, 10);
+      }
+#else
+      /* Compute bandwidth-expanded (unquantized) LPCs for perceptual weighting */
+      bw_lpc(st->gamma1, st->interp_lpc, st->bw_lpc1, st->lpcSize);
+      if (st->gamma2>=0)
+         bw_lpc(st->gamma2, st->interp_lpc, st->bw_lpc2, st->lpcSize);
+      else
+      {
+         st->bw_lpc2[0]=1;
+         for (i=1;i<=st->lpcSize;i++)
+            st->bw_lpc2[i]=0;
+      }
+      /*print_vec(st->bw_lpc1, 10, "bw_lpc");*/
+#endif
+
+      for (i=0;i<st->subframeSize;i++)
+         real_exc[i] = exc[i];
+      
+      if (st->complexity==0)
+         response_bound >>= 1;
+      compute_impulse_response(st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, syn_resp, response_bound, st->lpcSize, stack);
+      for (i=response_bound;i<st->subframeSize;i++)
+         syn_resp[i]=VERY_SMALL;
+      
+      /* Reset excitation */
+      for (i=0;i<st->subframeSize;i++)
+         exc[i]=VERY_SMALL;
+
+      /* Compute zero response of A(z/g1) / ( A(z/g2) * A(z) ) */
+      for (i=0;i<st->lpcSize;i++)
+         mem[i]=st->mem_sp[i];
+#ifdef SHORTCUTS2
+      iir_mem2(exc, st->interp_qlpc, exc, response_bound, st->lpcSize, mem);
+      for (i=0;i<st->lpcSize;i++)
+         mem[i]=st->mem_sw[i];
+      filter_mem2(exc, st->bw_lpc1, st->bw_lpc2, res, response_bound, st->lpcSize, mem);
+      for (i=response_bound;i<st->subframeSize;i++)
+         res[i]=0;
+#else
+      iir_mem2(exc, st->interp_qlpc, exc, st->subframeSize, st->lpcSize, mem);
+      for (i=0;i<st->lpcSize;i++)
+         mem[i]=st->mem_sw[i];
+      filter_mem2(exc, st->bw_lpc1, st->bw_lpc2, res, st->subframeSize, st->lpcSize, mem);
+#endif
+      
+      /* Compute weighted signal */
+      for (i=0;i<st->lpcSize;i++)
+         mem[i]=st->mem_sw[i];
+      filter_mem2(sp, st->bw_lpc1, st->bw_lpc2, sw, st->subframeSize, st->lpcSize, mem);
+      
+      if (st->complexity==0)
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sw[i]=mem[i];
+      
+      /* Compute target signal */
+      for (i=0;i<st->subframeSize;i++)
+         target[i]=sw[i]-res[i];
+
+      for (i=0;i<st->subframeSize;i++)
+         exc[i]=0;
+
+      /* If we have a long-term predictor (otherwise, something's wrong) */
+      if (SUBMODE(ltp_quant))
+      {
+         int pit_min, pit_max;
+         /* Long-term prediction */
+         if (SUBMODE(lbr_pitch) != -1)
+         {
+            /* Low bit-rate pitch handling */
+            int margin;
+            margin = SUBMODE(lbr_pitch);
+            if (margin)
+            {
+               if (ol_pitch < st->min_pitch+margin-1)
+                  ol_pitch=st->min_pitch+margin-1;
+               if (ol_pitch > st->max_pitch-margin)
+                  ol_pitch=st->max_pitch-margin;
+               pit_min = ol_pitch-margin+1;
+               pit_max = ol_pitch+margin;
+            } else {
+               pit_min=pit_max=ol_pitch;
+            }
+         } else {
+            pit_min = st->min_pitch;
+            pit_max = st->max_pitch;
+         }
+         
+         /* Force pitch to use only the current frame if needed */
+         if (st->bounded_pitch && pit_max>offset)
+            pit_max=offset;
+
+#ifdef EPIC_48K
+         if (st->lbr_48k)
+         {
+            pitch = SUBMODE(ltp_quant)(target, sw, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2,
+                                       exc, SUBMODE(ltp_params), pit_min, pit_max, ol_pitch_coef,
+                                       st->lpcSize, st->subframeSize, bits, stack, 
+                                       exc, syn_resp, st->complexity, ol_pitch_id, st->plc_tuning);
+         } else {
+#endif
+
+         /* Perform pitch search */
+         pitch = SUBMODE(ltp_quant)(target, sw, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2,
+                                    exc, SUBMODE(ltp_params), pit_min, pit_max, ol_pitch_coef,
+                                    st->lpcSize, st->subframeSize, bits, stack, 
+                                    exc, syn_resp, st->complexity, 0, st->plc_tuning);
+#ifdef EPIC_48K
+         }
+#endif
+
+         st->pitch[sub]=pitch;
+      } else {
+         speex_error ("No pitch prediction, what's wrong");
+      }
+
+      /* Quantization of innovation */
+      {
+         spx_sig_t *innov;
+         spx_word32_t ener=0;
+         spx_word16_t fine_gain;
+
+         innov = st->innov+sub*st->subframeSize;
+         for (i=0;i<st->subframeSize;i++)
+            innov[i]=0;
+         
+         for (i=0;i<st->subframeSize;i++)
+            real_exc[i] = SUB32(real_exc[i], exc[i]);
+
+         ener = SHL32(EXTEND32(compute_rms(real_exc, st->subframeSize)),SIG_SHIFT);
+         
+         /*FIXME: Should use DIV32_16 and make sure result fits in 16 bits */
+#ifdef FIXED_POINT
+         {
+            spx_word32_t f = DIV32(ener,PSHR32(ol_gain,SIG_SHIFT));
+            if (f<=32767)
+               fine_gain = f;
+            else
+               fine_gain = 32767;
+         }
+#else
+         fine_gain = DIV32_16(ener,PSHR32(ol_gain,SIG_SHIFT));
+#endif
+         /* Calculate gain correction for the sub-frame (if any) */
+         if (SUBMODE(have_subframe_gain)) 
+         {
+            int qe;
+            if (SUBMODE(have_subframe_gain)==3)
+            {
+               qe = scal_quant(fine_gain, exc_gain_quant_scal3_bound, 8);
+               speex_bits_pack(bits, qe, 3);
+               ener=MULT16_32_Q14(exc_gain_quant_scal3[qe],ol_gain);
+            } else {
+               qe = scal_quant(fine_gain, exc_gain_quant_scal1_bound, 2);
+               speex_bits_pack(bits, qe, 1);
+               ener=MULT16_32_Q14(exc_gain_quant_scal1[qe],ol_gain);               
+            }
+         } else {
+            ener=ol_gain;
+         }
+
+         /*printf ("%f %f\n", ener, ol_gain);*/
+
+         /* Normalize innovation */
+         signal_div(target, target, ener, st->subframeSize);
+
+         /* Quantize innovation */
+         if (SUBMODE(innovation_quant))
+         {
+            /* Codebook search */
+            SUBMODE(innovation_quant)(target, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, 
+                                      SUBMODE(innovation_params), st->lpcSize, st->subframeSize, 
+                                      innov, syn_resp, bits, stack, st->complexity, SUBMODE(double_codebook));
+            
+            /* De-normalize innovation and update excitation */
+            signal_mul(innov, innov, ener, st->subframeSize);
+
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = ADD32(exc[i],innov[i]);
+         } else {
+            speex_error("No fixed codebook");
+         }
+
+         /* In some (rare) modes, we do a second search (more bits) to reduce noise even more */
+         if (SUBMODE(double_codebook)) {
+            char *tmp_stack=stack;
+            VARDECL(spx_sig_t *innov2);
+            ALLOC(innov2, st->subframeSize, spx_sig_t);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]=0;
+            for (i=0;i<st->subframeSize;i++)
+               target[i]*=2.2;
+            SUBMODE(innovation_quant)(target, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, 
+                                      SUBMODE(innovation_params), st->lpcSize, st->subframeSize, 
+                                      innov2, syn_resp, bits, stack, st->complexity, 0);
+            signal_mul(innov2, innov2, (spx_word32_t) (ener*(1.f/2.2f)), st->subframeSize);
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = ADD32(exc[i],innov2[i]);
+            stack = tmp_stack;
+         }
+
+      }
+
+      /* Final signal synthesis from excitation */
+      iir_mem2(exc, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, st->mem_sp);
+
+      /* Compute weighted signal again, from synthesized speech (not sure it's the right thing) */
+      if (st->complexity!=0)
+         filter_mem2(sp, st->bw_lpc1, st->bw_lpc2, sw, st->subframeSize, st->lpcSize, st->mem_sw);
+      
+   }
+
+   /* Store the LSPs for interpolation in the next frame */
+   if (st->submodeID>=1)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_lsp[i] = st->lsp[i];
+      for (i=0;i<st->lpcSize;i++)
+         st->old_qlsp[i] = st->qlsp[i];
+   }
+
+#ifdef VORBIS_PSYCHO
+   if (st->submodeID>=1)
+   {
+      for (i=0;i<128;i++)
+         st->old_curve[i] = st->curve[i];
+   }
+#endif
+
+   if (st->submodeID==1)
+   {
+      if (st->dtx_count)
+         speex_bits_pack(bits, 15, 4);
+      else
+         speex_bits_pack(bits, 0, 4);
+   }
+
+   /* The next frame will not be the first (Duh!) */
+   st->first = 0;
+
+#ifdef RESYNTH
+   /* Replace input by synthesized speech */
+   for (i=0;i<st->frameSize;i++)
+   {
+      spx_word32_t sig = PSHR32(st->frame[i],SIG_SHIFT);
+      if (sig>32767)
+         sig = 32767;
+      if (sig<-32767)
+         sig = -32767;
+     in[i]=sig;
+   }
+#endif
+
+   if (SUBMODE(innovation_quant) == noise_codebook_quant || st->submodeID==0)
+      st->bounded_pitch = 1;
+   else
+      st->bounded_pitch = 0;
+
+   return 1;
+}
+
+
+void *nb_decoder_init(const SpeexMode *m)
+{
+   DecState *st;
+   const SpeexNBMode *mode;
+   int i;
+
+   mode=(const SpeexNBMode*)m->mode;
+   st = (DecState *)speex_alloc(sizeof(DecState));
+   if (!st)
+      return NULL;
+#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
+   st->stack = NULL;
+#else
+   st->stack = (char*)speex_alloc_scratch(NB_DEC_STACK);
+#endif
+
+   st->mode=m;
+
+
+   st->encode_submode = 1;
+#ifdef EPIC_48K
+   st->lbr_48k=mode->lbr48k;
+#endif
+
+   st->first=1;
+   /* Codec parameters, should eventually have several "modes"*/
+   st->frameSize = mode->frameSize;
+   st->nbSubframes=mode->frameSize/mode->subframeSize;
+   st->subframeSize=mode->subframeSize;
+   st->lpcSize = mode->lpcSize;
+   st->min_pitch=mode->pitchStart;
+   st->max_pitch=mode->pitchEnd;
+
+   st->submodes=mode->submodes;
+   st->submodeID=mode->defaultSubmode;
+
+   st->lpc_enh_enabled=0;
+
+
+   st->inBuf = speex_alloc((st->frameSize)*sizeof(spx_sig_t));
+   st->frame = st->inBuf;
+   st->excBuf = speex_alloc((st->frameSize + st->max_pitch + 1)*sizeof(spx_sig_t));
+   st->exc = st->excBuf + st->max_pitch + 1;
+   for (i=0;i<st->frameSize;i++)
+      st->inBuf[i]=0;
+   for (i=0;i<st->frameSize + st->max_pitch + 1;i++)
+      st->excBuf[i]=0;
+   st->innov = speex_alloc((st->frameSize)*sizeof(spx_sig_t));
+
+   st->interp_qlpc = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->old_qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->interp_qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->mem_sp = speex_alloc((5*st->lpcSize)*sizeof(spx_mem_t));
+   st->comb_mem = speex_alloc(sizeof(CombFilterMem));
+   comb_filter_mem_init (st->comb_mem);
+
+   st->pi_gain = speex_alloc((st->nbSubframes)*sizeof(spx_word32_t));
+   st->last_pitch = 40;
+   st->count_lost=0;
+   st->pitch_gain_buf[0] = st->pitch_gain_buf[1] = st->pitch_gain_buf[2] = 0;
+   st->pitch_gain_buf_idx = 0;
+   st->seed = 1000;
+   
+   st->sampling_rate=8000;
+   st->last_ol_gain = 0;
+
+   st->user_callback.func = &speex_default_user_handler;
+   st->user_callback.data = NULL;
+   for (i=0;i<16;i++)
+      st->speex_callbacks[i].func = NULL;
+
+   st->voc_m1=st->voc_m2=st->voc_mean=0;
+   st->voc_offset=0;
+   st->dtx_enabled=0;
+#ifdef ENABLE_VALGRIND
+   VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#endif
+   return st;
+}
+
+void nb_decoder_destroy(void *state)
+{
+   DecState *st;
+   st=(DecState*)state;
+   
+#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
+   speex_free_scratch(st->stack);
+#endif
+
+   speex_free (st->inBuf);
+   speex_free (st->excBuf);
+   speex_free (st->innov);
+   speex_free (st->interp_qlpc);
+   speex_free (st->qlsp);
+   speex_free (st->old_qlsp);
+   speex_free (st->interp_qlsp);
+   speex_free (st->mem_sp);
+   speex_free (st->comb_mem);
+   speex_free (st->pi_gain);
+
+   speex_free(state);
+}
+
+#define median3(a, b, c)	((a) < (b) ? ((b) < (c) ? (b) : ((a) < (c) ? (c) : (a))) : ((c) < (b) ? (b) : ((c) < (a) ? (c) : (a))))
+
+#ifdef FIXED_POINT
+const spx_word16_t attenuation[10] = {32767, 31483, 27923, 22861, 17278, 12055, 7764, 4616, 2533, 1283};
+#else
+const spx_word16_t attenuation[10] = {1., 0.961, 0.852, 0.698, 0.527, 0.368, 0.237, 0.141, 0.077, 0.039};
+
+#endif
+
+static void nb_decode_lost(DecState *st, spx_word16_t *out, char *stack)
+{
+   int i, sub;
+   int pitch_val;
+   VARDECL(spx_coef_t *awk1);
+   VARDECL(spx_coef_t *awk2);
+   VARDECL(spx_coef_t *awk3);
+   spx_word16_t pitch_gain;
+   spx_word16_t fact;
+   spx_word16_t gain_med;
+   spx_word16_t innov_gain;
+   
+   if (st->count_lost<10)
+      fact = attenuation[st->count_lost];
+   else
+      fact = 0;
+
+   gain_med = median3(st->pitch_gain_buf[0], st->pitch_gain_buf[1], st->pitch_gain_buf[2]);
+   if (gain_med < st->last_pitch_gain)
+      st->last_pitch_gain = gain_med;
+   
+#ifdef FIXED_POINT
+   pitch_gain = st->last_pitch_gain;
+   if (pitch_gain>54)
+      pitch_gain = 54;
+   pitch_gain = SHL(pitch_gain, 9);
+#else   
+   pitch_gain = GAIN_SCALING_1*st->last_pitch_gain;
+   if (pitch_gain>.85)
+      pitch_gain=.85;
+#endif
+
+   pitch_gain = MULT16_16_Q15(fact,pitch_gain) + VERY_SMALL;
+
+   /* Shift all buffers by one frame */
+   /*speex_move(st->inBuf, st->inBuf+st->frameSize, (st->bufSize-st->frameSize)*sizeof(spx_sig_t));*/
+   speex_move(st->excBuf, st->excBuf+st->frameSize, (st->max_pitch + 1)*sizeof(spx_sig_t));
+
+   ALLOC(awk1, (st->lpcSize+1), spx_coef_t);
+   ALLOC(awk2, (st->lpcSize+1), spx_coef_t);
+   ALLOC(awk3, (st->lpcSize+1), spx_coef_t);
+
+   for (sub=0;sub<st->nbSubframes;sub++)
+   {
+      int offset;
+      spx_sig_t *sp, *exc;
+      /* Offset relative to start of frame */
+      offset = st->subframeSize*sub;
+      /* Original signal */
+      sp=st->frame+offset;
+      /* Excitation */
+      exc=st->exc+offset;
+      /* Excitation after post-filter*/
+
+      /* Calculate perceptually enhanced LPC filter */
+      if (st->lpc_enh_enabled)
+      {
+         spx_word16_t k1,k2,k3;
+         if (st->submodes[st->submodeID] != NULL)
+         {
+            k1=SUBMODE(lpc_enh_k1);
+            k2=SUBMODE(lpc_enh_k2);
+            k3=SUBMODE(lpc_enh_k3);
+         } else {
+            k1=k2=.7*GAMMA_SCALING;
+            k3=.0;
+         }
+         bw_lpc(k1, st->interp_qlpc, awk1, st->lpcSize);
+         bw_lpc(k2, st->interp_qlpc, awk2, st->lpcSize);
+         bw_lpc(k3, st->interp_qlpc, awk3, st->lpcSize);
+      }
+        
+      /* Make up a plausible excitation */
+      /* FIXME: THIS CAN BE IMPROVED */
+      /*if (pitch_gain>.95)
+        pitch_gain=.95;*/
+      innov_gain = compute_rms(st->innov, st->frameSize);
+      pitch_val = st->last_pitch + SHR32((spx_int32_t)speex_rand(1+st->count_lost, &st->seed),SIG_SHIFT);
+      if (pitch_val > st->max_pitch)
+         pitch_val = st->max_pitch;
+      if (pitch_val < st->min_pitch)
+         pitch_val = st->min_pitch;
+      for (i=0;i<st->subframeSize;i++)
+      {
+         exc[i]= MULT16_32_Q15(pitch_gain, (exc[i-pitch_val]+VERY_SMALL)) + 
+               MULT16_32_Q15(fact, MULT16_32_Q15(SHL(Q15ONE,15)-SHL(MULT16_16(pitch_gain,pitch_gain),1),speex_rand(innov_gain, &st->seed)));
+      }
+      
+      for (i=0;i<st->subframeSize;i++)
+         sp[i]=exc[i];
+      
+      /* Signal synthesis */
+      if (st->lpc_enh_enabled)
+      {
+         filter_mem2(sp, awk2, awk1, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp+st->lpcSize);
+         filter_mem2(sp, awk3, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      } else {
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sp[st->lpcSize+i] = 0;
+         iir_mem2(sp, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      }      
+   }
+
+   for (i=0;i<st->frameSize;i++)
+   {
+      spx_word32_t sig = PSHR32(st->frame[i],SIG_SHIFT);
+      if (sig>32767)
+         sig = 32767;
+      if (sig<-32767)
+         sig = -32767;
+     out[i]=sig;
+   }
+   
+   st->first = 0;
+   st->count_lost++;
+   st->pitch_gain_buf[st->pitch_gain_buf_idx++] = PSHR(pitch_gain,9);
+   if (st->pitch_gain_buf_idx > 2) /* rollover */
+      st->pitch_gain_buf_idx = 0;
+}
+
+int nb_decode(void *state, SpeexBits *bits, void *vout)
+{
+   DecState *st;
+   int i, sub;
+   int pitch;
+   spx_word16_t pitch_gain[3];
+   spx_word32_t ol_gain=0;
+   int ol_pitch=0;
+   spx_word16_t ol_pitch_coef=0;
+   int best_pitch=40;
+   spx_word16_t best_pitch_gain=0;
+   int wideband;
+   int m;
+   char *stack;
+   VARDECL(spx_coef_t *awk1);
+   VARDECL(spx_coef_t *awk2);
+   VARDECL(spx_coef_t *awk3);
+   spx_word16_t pitch_average=0;
+#ifdef EPIC_48K
+   int pitch_half[2];
+   int ol_pitch_id=0;
+#endif
+   spx_word16_t *out = vout;
+
+   st=(DecState*)state;
+   stack=st->stack;
+
+   /* Check if we're in DTX mode*/
+   if (!bits && st->dtx_enabled)
+   {
+      st->submodeID=0;
+   } else 
+   {
+      /* If bits is NULL, consider the packet to be lost (what could we do anyway) */
+      if (!bits)
+      {
+         nb_decode_lost(st, out, stack);
+         return 0;
+      }
+
+      if (st->encode_submode)
+      {
+#ifdef EPIC_48K
+         if (!st->lbr_48k) {
+#endif
+
+      /* Search for next narrowband block (handle requests, skip wideband blocks) */
+      do {
+         if (speex_bits_remaining(bits)<5)
+            return -1;
+         wideband = speex_bits_unpack_unsigned(bits, 1);
+         if (wideband) /* Skip wideband block (for compatibility) */
+         {
+            int submode;
+            int advance;
+            advance = submode = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS);
+            speex_mode_query(&speex_wb_mode, SPEEX_SUBMODE_BITS_PER_FRAME, &advance);
+            if (advance < 0)
+            {
+               speex_warning ("Invalid wideband mode encountered. Corrupted stream?");
+               return -2;
+            } 
+            advance -= (SB_SUBMODE_BITS+1);
+            speex_bits_advance(bits, advance);
+            
+            if (speex_bits_remaining(bits)<5)
+               return -1;
+            wideband = speex_bits_unpack_unsigned(bits, 1);
+            if (wideband)
+            {
+               advance = submode = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS);
+               speex_mode_query(&speex_wb_mode, SPEEX_SUBMODE_BITS_PER_FRAME, &advance);
+               if (advance < 0)
+               {
+                  speex_warning ("Invalid wideband mode encountered: corrupted stream?");
+                  return -2;
+               } 
+               advance -= (SB_SUBMODE_BITS+1);
+               speex_bits_advance(bits, advance);
+               wideband = speex_bits_unpack_unsigned(bits, 1);
+               if (wideband)
+               {
+                  speex_warning ("More than two wideband layers found: corrupted stream?");
+                  return -2;
+               }
+
+            }
+         }
+         if (speex_bits_remaining(bits)<4)
+            return -1;
+         /* FIXME: Check for overflow */
+         m = speex_bits_unpack_unsigned(bits, 4);
+         if (m==15) /* We found a terminator */
+         {
+            return -1;
+         } else if (m==14) /* Speex in-band request */
+         {
+            int ret = speex_inband_handler(bits, st->speex_callbacks, state);
+            if (ret)
+               return ret;
+         } else if (m==13) /* User in-band request */
+         {
+            int ret = st->user_callback.func(bits, state, st->user_callback.data);
+            if (ret)
+               return ret;
+         } else if (m>8) /* Invalid mode */
+         {
+            speex_warning("Invalid mode encountered: corrupted stream?");
+            return -2;
+         }
+      
+      } while (m>8);
+
+      /* Get the sub-mode that was used */
+      st->submodeID = m;
+#ifdef EPIC_48K
+         }
+#endif
+      }
+
+   }
+
+   /* Shift all buffers by one frame */
+   speex_move(st->excBuf, st->excBuf+st->frameSize, (st->max_pitch + 1)*sizeof(spx_sig_t));
+
+   /* If null mode (no transmission), just set a couple things to zero*/
+   if (st->submodes[st->submodeID] == NULL)
+   {
+      VARDECL(spx_coef_t *lpc);
+      ALLOC(lpc, st->lpcSize, spx_coef_t);
+      bw_lpc(GAMMA_SCALING*.93, st->interp_qlpc, lpc, st->lpcSize);
+      {
+         float innov_gain=0;
+         float pgain=GAIN_SCALING_1*st->last_pitch_gain;
+         if (pgain>.6)
+            pgain=.6;
+	 innov_gain = compute_rms(st->innov, st->frameSize);
+         for (i=0;i<st->frameSize;i++)
+            st->exc[i]=VERY_SMALL;
+         speex_rand_vec(innov_gain, st->exc, st->frameSize);
+      }
+
+
+      st->first=1;
+
+      /* Final signal synthesis from excitation */
+      iir_mem2(st->exc, lpc, st->frame, st->frameSize, st->lpcSize, st->mem_sp);
+
+      for (i=0;i<st->frameSize;i++)
+      {
+         spx_word32_t sig = PSHR32(st->frame[i],SIG_SHIFT);
+         if (sig>32767)
+            sig = 32767;
+         if (sig<-32767)
+            sig = -32767;
+         out[i]=sig;
+      }
+
+      st->count_lost=0;
+      return 0;
+   }
+
+   /* Unquantize LSPs */
+   SUBMODE(lsp_unquant)(st->qlsp, st->lpcSize, bits);
+
+   /*Damp memory if a frame was lost and the LSP changed too much*/
+   if (st->count_lost)
+   {
+      spx_word16_t fact;
+      spx_word32_t lsp_dist=0;
+      for (i=0;i<st->lpcSize;i++)
+         lsp_dist = ADD32(lsp_dist, EXTEND32(ABS(st->old_qlsp[i] - st->qlsp[i])));
+#ifdef FIXED_POINT
+      fact = SHR16(19661,SHR32(lsp_dist,LSP_SHIFT+2));      
+#else
+      fact = .6*exp(-.2*lsp_dist);
+#endif
+      for (i=0;i<2*st->lpcSize;i++)
+         st->mem_sp[i] = MULT16_32_Q15(fact,st->mem_sp[i]);
+   }
+
+
+   /* Handle first frame and lost-packet case */
+   if (st->first || st->count_lost)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_qlsp[i] = st->qlsp[i];
+   }
+
+#ifdef EPIC_48K
+   if (st->lbr_48k) {
+      pitch_half[0] = st->min_pitch+speex_bits_unpack_unsigned(bits, 7);
+      pitch_half[1] = pitch_half[0]+speex_bits_unpack_unsigned(bits, 2)-1;
+
+      ol_pitch_id = speex_bits_unpack_unsigned(bits, 3);
+      ol_pitch_coef=GAIN_SCALING*0.13514*ol_pitch_id;
+
+      {
+         int qe;
+         qe = speex_bits_unpack_unsigned(bits, 4);
+         ol_gain = SIG_SCALING*exp((qe+2)/2.1),SIG_SHIFT;
+      }
+
+   } else {
+#endif
+
+   /* Get open-loop pitch estimation for low bit-rate pitch coding */
+   if (SUBMODE(lbr_pitch)!=-1)
+   {
+      ol_pitch = st->min_pitch+speex_bits_unpack_unsigned(bits, 7);
+   } 
+   
+   if (SUBMODE(forced_pitch_gain))
+   {
+      int quant;
+      quant = speex_bits_unpack_unsigned(bits, 4);
+      ol_pitch_coef=GAIN_SCALING*0.066667*quant;
+   }
+   
+   /* Get global excitation gain */
+   {
+      int qe;
+      qe = speex_bits_unpack_unsigned(bits, 5);
+#ifdef FIXED_POINT
+      ol_gain = MULT16_32_Q15(28406,ol_gain_table[qe]);
+#else
+      ol_gain = SIG_SCALING*exp(qe/3.5);
+#endif
+   }
+#ifdef EPIC_48K
+   }
+#endif
+
+   ALLOC(awk1, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk2, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk3, st->lpcSize+1, spx_coef_t);
+
+   if (st->submodeID==1)
+   {
+      int extra;
+      extra = speex_bits_unpack_unsigned(bits, 4);
+
+      if (extra==15)
+         st->dtx_enabled=1;
+      else
+         st->dtx_enabled=0;
+   }
+   if (st->submodeID>1)
+      st->dtx_enabled=0;
+
+   /*Loop on subframes */
+   for (sub=0;sub<st->nbSubframes;sub++)
+   {
+      int offset;
+      spx_sig_t *sp, *exc;
+      spx_word16_t tmp;
+
+#ifdef EPIC_48K
+      if (st->lbr_48k)
+      {
+         if (sub*2 < st->nbSubframes)
+            ol_pitch = pitch_half[0];
+         else
+            ol_pitch = pitch_half[1];
+      }
+#endif
+
+      /* Offset relative to start of frame */
+      offset = st->subframeSize*sub;
+      /* Original signal */
+      sp=st->frame+offset;
+      /* Excitation */
+      exc=st->exc+offset;
+      /* Excitation after post-filter*/
+
+      /* LSP interpolation (quantized and unquantized) */
+      lsp_interpolate(st->old_qlsp, st->qlsp, st->interp_qlsp, st->lpcSize, sub, st->nbSubframes);
+
+      /* Make sure the LSP's are stable */
+      lsp_enforce_margin(st->interp_qlsp, st->lpcSize, LSP_MARGIN);
+
+
+      /* Compute interpolated LPCs (unquantized) */
+      lsp_to_lpc(st->interp_qlsp, st->interp_qlpc, st->lpcSize, stack);
+
+      /* Compute enhanced synthesis filter */
+      if (st->lpc_enh_enabled)
+      {
+         bw_lpc(SUBMODE(lpc_enh_k1), st->interp_qlpc, awk1, st->lpcSize);
+         bw_lpc(SUBMODE(lpc_enh_k2), st->interp_qlpc, awk2, st->lpcSize);
+         bw_lpc(SUBMODE(lpc_enh_k3), st->interp_qlpc, awk3, st->lpcSize);
+      }
+
+      /* Compute analysis filter at w=pi */
+      {
+         spx_word32_t pi_g=LPC_SCALING;
+         for (i=0;i<st->lpcSize;i+=2)
+         {
+            /*pi_g += -st->interp_qlpc[i] +  st->interp_qlpc[i+1];*/
+            pi_g = ADD32(pi_g, SUB32(st->interp_qlpc[i+1],st->interp_qlpc[i]));
+         }
+         st->pi_gain[sub] = pi_g;
+      }
+
+      /* Reset excitation */
+      for (i=0;i<st->subframeSize;i++)
+         exc[i]=0;
+
+      /*Adaptive codebook contribution*/
+      if (SUBMODE(ltp_unquant))
+      {
+         int pit_min, pit_max;
+         /* Handle pitch constraints if any */
+         if (SUBMODE(lbr_pitch) != -1)
+         {
+            int margin;
+            margin = SUBMODE(lbr_pitch);
+            if (margin)
+            {
+/* GT - need optimization?
+               if (ol_pitch < st->min_pitch+margin-1)
+                  ol_pitch=st->min_pitch+margin-1;
+               if (ol_pitch > st->max_pitch-margin)
+                  ol_pitch=st->max_pitch-margin;
+               pit_min = ol_pitch-margin+1;
+               pit_max = ol_pitch+margin;
+*/
+               pit_min = ol_pitch-margin+1;
+               if (pit_min < st->min_pitch)
+		  pit_min = st->min_pitch;
+               pit_max = ol_pitch+margin;
+               if (pit_max > st->max_pitch)
+		  pit_max = st->max_pitch;
+            } else {
+               pit_min = pit_max = ol_pitch;
+            }
+         } else {
+            pit_min = st->min_pitch;
+            pit_max = st->max_pitch;
+         }
+
+
+#ifdef EPIC_48K
+         if (st->lbr_48k)
+         {
+             SUBMODE(ltp_unquant)(exc, pit_min, pit_max, ol_pitch_coef, SUBMODE(ltp_params), 
+                                  st->subframeSize, &pitch, &pitch_gain[0], bits, stack, 
+                                  st->count_lost, offset, st->last_pitch_gain, ol_pitch_id);
+         } else {
+#endif
+
+             SUBMODE(ltp_unquant)(exc, pit_min, pit_max, ol_pitch_coef, SUBMODE(ltp_params), 
+                                  st->subframeSize, &pitch, &pitch_gain[0], bits, stack, 
+                                  st->count_lost, offset, st->last_pitch_gain, 0);
+
+#ifdef EPIC_48K
+         }
+#endif
+
+         
+         /* If we had lost frames, check energy of last received frame */
+         if (st->count_lost && ol_gain < st->last_ol_gain)
+         {
+            /*float fact = (float)ol_gain/(st->last_ol_gain+1);
+            for (i=0;i<st->subframeSize;i++)
+            exc[i]*=fact;*/
+            spx_word16_t fact = DIV32_16(SHL32(EXTEND32(ol_gain),15),st->last_ol_gain+1);
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = MULT16_32_Q15(fact, exc[i]);
+         }
+
+         tmp = gain_3tap_to_1tap(pitch_gain);
+
+         pitch_average += tmp;
+         if (tmp>best_pitch_gain)
+         {
+            best_pitch = pitch;
+	    best_pitch_gain = tmp;
+         }
+      } else {
+         speex_error("No pitch prediction, what's wrong");
+      }
+      
+      /* Unquantize the innovation */
+      {
+         int q_energy;
+         spx_word32_t ener;
+         spx_sig_t *innov;
+         
+         innov = st->innov+sub*st->subframeSize;
+         for (i=0;i<st->subframeSize;i++)
+            innov[i]=0;
+
+         /* Decode sub-frame gain correction */
+         if (SUBMODE(have_subframe_gain)==3)
+         {
+            q_energy = speex_bits_unpack_unsigned(bits, 3);
+            ener = MULT16_32_Q14(exc_gain_quant_scal3[q_energy],ol_gain);
+         } else if (SUBMODE(have_subframe_gain)==1)
+         {
+            q_energy = speex_bits_unpack_unsigned(bits, 1);
+            ener = MULT16_32_Q14(exc_gain_quant_scal1[q_energy],ol_gain);
+         } else {
+            ener = ol_gain;
+         }
+                  
+         if (SUBMODE(innovation_unquant))
+         {
+            /*Fixed codebook contribution*/
+            SUBMODE(innovation_unquant)(innov, SUBMODE(innovation_params), st->subframeSize, bits, stack);
+         } else {
+            speex_error("No fixed codebook");
+         }
+
+         /* De-normalize innovation and update excitation */
+#ifdef FIXED_POINT
+         signal_mul(innov, innov, ener, st->subframeSize);
+#else
+         signal_mul(innov, innov, ener, st->subframeSize);
+#endif
+         /*Vocoder mode*/
+         if (st->submodeID==1) 
+         {
+            float g=ol_pitch_coef*GAIN_SCALING_1;
+
+            
+            for (i=0;i<st->subframeSize;i++)
+               exc[i]=0;
+            while (st->voc_offset<st->subframeSize)
+            {
+               if (st->voc_offset>=0)
+                  exc[st->voc_offset]=SIG_SCALING*sqrt(1.0*ol_pitch);
+               st->voc_offset+=ol_pitch;
+            }
+            st->voc_offset -= st->subframeSize;
+
+            g=.5+2*(g-.6);
+            if (g<0)
+               g=0;
+            if (g>1)
+               g=1;
+            for (i=0;i<st->subframeSize;i++)
+            {
+               float exci=exc[i];
+               exc[i]=.8*g*exc[i]*ol_gain/SIG_SCALING + .6*g*st->voc_m1*ol_gain/SIG_SCALING + .5*g*innov[i] - .5*g*st->voc_m2 + (1-g)*innov[i];
+               st->voc_m1 = exci;
+               st->voc_m2=innov[i];
+               st->voc_mean = .95*st->voc_mean + .05*exc[i];
+               exc[i]-=st->voc_mean;
+            }
+         } else {
+            for (i=0;i<st->subframeSize;i++)
+               exc[i]=ADD32(exc[i],innov[i]);
+            /*print_vec(exc, 40, "innov");*/
+         }
+         /* Decode second codebook (only for some modes) */
+         if (SUBMODE(double_codebook))
+         {
+            char *tmp_stack=stack;
+            VARDECL(spx_sig_t *innov2);
+            ALLOC(innov2, st->subframeSize, spx_sig_t);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]=0;
+            SUBMODE(innovation_unquant)(innov2, SUBMODE(innovation_params), st->subframeSize, bits, stack);
+            signal_mul(innov2, innov2, (spx_word32_t) (ener*(1/2.2)), st->subframeSize);
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = ADD32(exc[i],innov2[i]);
+            stack = tmp_stack;
+         }
+
+      }
+
+      /* If the last packet was lost, re-scale the excitation to obtain the same energy as encoded in ol_gain */
+      if (st->count_lost) 
+      {
+         spx_word16_t exc_ener;
+         spx_word32_t gain32;
+         spx_word16_t gain;
+         exc_ener = compute_rms (exc, st->subframeSize);
+         gain32 = DIV32(ol_gain, ADD16(exc_ener,1));
+#ifdef FIXED_POINT
+         if (gain32 > 32768)
+            gain32 = 32768;
+         gain = EXTRACT16(gain32);
+#else
+         if (gain32 > 2)
+            gain32=2;
+         gain = gain32;
+#endif
+         for (i=0;i<st->subframeSize;i++)
+            exc[i] = MULT16_32_Q14(gain, exc[i]);
+      }
+
+      for (i=0;i<st->subframeSize;i++)
+         sp[i]=exc[i];
+
+      /* Signal synthesis */
+      if (st->lpc_enh_enabled && SUBMODE(comb_gain)>0)
+         comb_filter(exc, sp, st->interp_qlpc, st->lpcSize, st->subframeSize,
+                              pitch, pitch_gain, SUBMODE(comb_gain), st->comb_mem);
+
+      if (st->lpc_enh_enabled)
+      {
+         /* Use enhanced LPC filter */
+         filter_mem2(sp, awk2, awk1, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp+st->lpcSize);
+         filter_mem2(sp, awk3, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      } else {
+         /* Use regular filter */
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sp[st->lpcSize+i] = 0;
+         iir_mem2(sp, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      }
+   }
+   
+   /*Copy output signal*/   
+   for (i=0;i<st->frameSize;i++)
+   {
+      spx_word32_t sig = PSHR32(st->frame[i],SIG_SHIFT);
+      if (sig>32767)
+         sig = 32767;
+      if (sig<-32767)
+         sig = -32767;
+     out[i]=sig;
+   }
+
+   /*for (i=0;i<st->frameSize;i++)
+     printf ("%d\n", (int)st->frame[i]);*/
+
+   /* Store the LSPs for interpolation in the next frame */
+   for (i=0;i<st->lpcSize;i++)
+      st->old_qlsp[i] = st->qlsp[i];
+
+   /* The next frame will not be the first (Duh!) */
+   st->first = 0;
+   st->count_lost=0;
+   st->last_pitch = best_pitch;
+#ifdef FIXED_POINT
+   st->last_pitch_gain = PSHR16(pitch_average,2);
+#else
+   st->last_pitch_gain = .25*pitch_average;   
+#endif
+   st->pitch_gain_buf[st->pitch_gain_buf_idx++] = st->last_pitch_gain;
+   if (st->pitch_gain_buf_idx > 2) /* rollover */
+      st->pitch_gain_buf_idx = 0;
+
+   st->last_ol_gain = ol_gain;
+
+   return 0;
+}
+
+int nb_encoder_ctl(void *state, int request, void *ptr)
+{
+   EncState *st;
+   st=(EncState*)state;     
+   switch(request)
+   {
+   case SPEEX_GET_FRAME_SIZE:
+      (*(int*)ptr) = st->frameSize;
+      break;
+   case SPEEX_SET_LOW_MODE:
+   case SPEEX_SET_MODE:
+      st->submodeSelect = st->submodeID = (*(int*)ptr);
+      break;
+   case SPEEX_GET_LOW_MODE:
+   case SPEEX_GET_MODE:
+      (*(int*)ptr) = st->submodeID;
+      break;
+   case SPEEX_SET_VBR:
+      st->vbr_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_GET_VBR:
+      (*(int*)ptr) = st->vbr_enabled;
+      break;
+   case SPEEX_SET_VAD:
+      st->vad_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_GET_VAD:
+      (*(int*)ptr) = st->vad_enabled;
+      break;
+   case SPEEX_SET_DTX:
+      st->dtx_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_GET_DTX:
+      (*(int*)ptr) = st->dtx_enabled;
+      break;
+   case SPEEX_SET_ABR:
+      st->abr_enabled = (*(int*)ptr);
+      st->vbr_enabled = 1;
+      {
+         int i=10, rate, target;
+         float vbr_qual;
+         target = (*(int*)ptr);
+         while (i>=0)
+         {
+            speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
+            speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
+            if (rate <= target)
+               break;
+            i--;
+         }
+         vbr_qual=i;
+         if (vbr_qual<0)
+            vbr_qual=0;
+         speex_encoder_ctl(st, SPEEX_SET_VBR_QUALITY, &vbr_qual);
+         st->abr_count=0;
+         st->abr_drift=0;
+         st->abr_drift2=0;
+      }
+      
+      break;
+   case SPEEX_GET_ABR:
+      (*(int*)ptr) = st->abr_enabled;
+      break;
+   case SPEEX_SET_VBR_QUALITY:
+      st->vbr_quality = (*(float*)ptr);
+      break;
+   case SPEEX_GET_VBR_QUALITY:
+      (*(float*)ptr) = st->vbr_quality;
+      break;
+   case SPEEX_SET_QUALITY:
+      {
+         int quality = (*(int*)ptr);
+         if (quality < 0)
+            quality = 0;
+         if (quality > 10)
+            quality = 10;
+         st->submodeSelect = st->submodeID = ((const SpeexNBMode*)(st->mode->mode))->quality_map[quality];
+      }
+      break;
+   case SPEEX_SET_COMPLEXITY:
+      st->complexity = (*(int*)ptr);
+      if (st->complexity<0)
+         st->complexity=0;
+      break;
+   case SPEEX_GET_COMPLEXITY:
+      (*(int*)ptr) = st->complexity;
+      break;
+   case SPEEX_SET_BITRATE:
+      {
+         int i=10, rate, target;
+         target = (*(int*)ptr);
+         while (i>=0)
+         {
+            speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
+            speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
+            if (rate <= target)
+               break;
+            i--;
+         }
+      }
+      break;
+   case SPEEX_GET_BITRATE:
+      if (st->submodes[st->submodeID])
+         (*(int*)ptr) = st->sampling_rate*SUBMODE(bits_per_frame)/st->frameSize;
+      else
+         (*(int*)ptr) = st->sampling_rate*(NB_SUBMODE_BITS+1)/st->frameSize;
+      break;
+   case SPEEX_SET_SAMPLING_RATE:
+      st->sampling_rate = (*(int*)ptr);
+      break;
+   case SPEEX_GET_SAMPLING_RATE:
+      (*(int*)ptr)=st->sampling_rate;
+      break;
+   case SPEEX_RESET_STATE:
+      {
+         int i;
+         st->bounded_pitch = 1;
+         st->first = 1;
+         for (i=0;i<st->lpcSize;i++)
+            st->lsp[i]=(M_PI*((float)(i+1)))/(st->lpcSize+1);
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sw[i]=st->mem_sw_whole[i]=st->mem_sp[i]=st->mem_exc[i]=0;
+         for (i=0;i<st->frameSize+st->max_pitch+1;i++)
+            st->excBuf[i]=st->swBuf[i]=0;
+         for (i=0;i<st->windowSize;i++)
+            st->inBuf[i]=0;
+      }
+      break;
+   case SPEEX_SET_SUBMODE_ENCODING:
+      st->encode_submode = (*(int*)ptr);
+      break;
+   case SPEEX_GET_SUBMODE_ENCODING:
+      (*(int*)ptr) = st->encode_submode;
+      break;
+   case SPEEX_GET_LOOKAHEAD:
+      (*(int*)ptr)=(st->windowSize-st->frameSize);
+      break;
+   case SPEEX_SET_PLC_TUNING:
+      st->plc_tuning = (*(int*)ptr);
+      if (st->plc_tuning>100)
+         st->plc_tuning=100;
+      break;
+   case SPEEX_GET_PLC_TUNING:
+      (*(int*)ptr)=(st->plc_tuning);
+      break;
+   case SPEEX_GET_PI_GAIN:
+      {
+         int i;
+         spx_word32_t *g = (spx_word32_t*)ptr;
+         for (i=0;i<st->nbSubframes;i++)
+            g[i]=st->pi_gain[i];
+      }
+      break;
+   case SPEEX_GET_EXC:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->frameSize;i++)
+            e[i]=st->exc[i];
+      }
+      break;
+   case SPEEX_GET_INNOV:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->frameSize;i++)
+            e[i]=st->innov[i];
+      }
+      break;
+   case SPEEX_GET_RELATIVE_QUALITY:
+      (*(float*)ptr)=st->relative_quality;
+      break;
+   default:
+      speex_warning_int("Unknown nb_ctl request: ", request);
+      return -1;
+   }
+   return 0;
+}
+
+int nb_decoder_ctl(void *state, int request, void *ptr)
+{
+   DecState *st;
+   st=(DecState*)state;
+   switch(request)
+   {
+   case SPEEX_SET_LOW_MODE:
+   case SPEEX_SET_MODE:
+      st->submodeID = (*(int*)ptr);
+      break;
+   case SPEEX_GET_LOW_MODE:
+   case SPEEX_GET_MODE:
+      (*(int*)ptr) = st->submodeID;
+      break;
+   case SPEEX_SET_ENH:
+      st->lpc_enh_enabled = *((int*)ptr);
+      break;
+   case SPEEX_GET_ENH:
+      *((int*)ptr) = st->lpc_enh_enabled;
+      break;
+   case SPEEX_GET_FRAME_SIZE:
+      (*(int*)ptr) = st->frameSize;
+      break;
+   case SPEEX_GET_BITRATE:
+      if (st->submodes[st->submodeID])
+         (*(int*)ptr) = st->sampling_rate*SUBMODE(bits_per_frame)/st->frameSize;
+      else
+         (*(int*)ptr) = st->sampling_rate*(NB_SUBMODE_BITS+1)/st->frameSize;
+      break;
+   case SPEEX_SET_SAMPLING_RATE:
+      st->sampling_rate = (*(int*)ptr);
+      break;
+   case SPEEX_GET_SAMPLING_RATE:
+      (*(int*)ptr)=st->sampling_rate;
+      break;
+   case SPEEX_SET_HANDLER:
+      {
+         SpeexCallback *c = (SpeexCallback*)ptr;
+         st->speex_callbacks[c->callback_id].func=c->func;
+         st->speex_callbacks[c->callback_id].data=c->data;
+         st->speex_callbacks[c->callback_id].callback_id=c->callback_id;
+      }
+      break;
+   case SPEEX_SET_USER_HANDLER:
+      {
+         SpeexCallback *c = (SpeexCallback*)ptr;
+         st->user_callback.func=c->func;
+         st->user_callback.data=c->data;
+         st->user_callback.callback_id=c->callback_id;
+      }
+      break;
+   case SPEEX_RESET_STATE:
+      {
+         int i;
+         for (i=0;i<2*st->lpcSize;i++)
+            st->mem_sp[i]=0;
+         for (i=0;i<st->frameSize + st->max_pitch + 1;i++)
+            st->excBuf[i]=0;
+         for (i=0;i<st->frameSize;i++)
+            st->inBuf[i] = 0;
+      }
+      break;
+   case SPEEX_SET_SUBMODE_ENCODING:
+      st->encode_submode = (*(int*)ptr);
+      break;
+   case SPEEX_GET_SUBMODE_ENCODING:
+      (*(int*)ptr) = st->encode_submode;
+      break;
+   case SPEEX_GET_PI_GAIN:
+      {
+         int i;
+         spx_word32_t *g = (spx_word32_t*)ptr;
+         for (i=0;i<st->nbSubframes;i++)
+            g[i]=st->pi_gain[i];
+      }
+      break;
+   case SPEEX_GET_EXC:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->frameSize;i++)
+            e[i]=st->exc[i];
+      }
+      break;
+   case SPEEX_GET_INNOV:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->frameSize;i++)
+            e[i]=st->innov[i];
+      }
+      break;
+   case SPEEX_GET_DTX_STATUS:
+      *((int*)ptr) = st->dtx_enabled;
+      break;
+   default:
+      speex_warning_int("Unknown nb_ctl request: ", request);
+      return -1;
+   }
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/nb_celp.h b/pjmedia/src/pjmedia-codec/speex/nb_celp.h
new file mode 100644
index 00000000..c9fb2b3d
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/nb_celp.h
@@ -0,0 +1,210 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+    @file nb_celp.h
+    @brief Narrowband CELP encoder/decoder
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef NB_CELP_H
+#define NB_CELP_H
+
+#include "modes.h"
+#include <speex/speex_bits.h>
+#include <speex/speex_callbacks.h>
+#include "vbr.h"
+#include "filters.h"
+
+#ifdef VORBIS_PSYCHO
+#include "vorbis_psy.h"
+#endif
+
+/**Structure representing the full state of the narrowband encoder*/
+typedef struct EncState {
+   const SpeexMode *mode;       /**< Mode corresponding to the state */
+   int    first;          /**< Is this the first frame? */
+   int    frameSize;      /**< Size of frames */
+   int    subframeSize;   /**< Size of sub-frames */
+   int    nbSubframes;    /**< Number of sub-frames */
+   int    windowSize;     /**< Analysis (LPC) window length */
+   int    lpcSize;        /**< LPC order */
+   int    min_pitch;      /**< Minimum pitch value allowed */
+   int    max_pitch;      /**< Maximum pitch value allowed */
+
+   int    safe_pitch;     /**< Don't use too large values for pitch (in case we lose a packet) */
+   int    bounded_pitch;  /**< Next frame should not rely on previous frames for pitch */
+   int    ol_pitch;       /**< Open-loop pitch */
+   int    ol_voiced;      /**< Open-loop voiced/non-voiced decision */
+   int   *pitch;
+
+#ifdef EPIC_48K
+   int    lbr_48k;
+#endif
+
+#ifdef VORBIS_PSYCHO
+   VorbisPsy *psy;
+   float *curve;
+   float *old_curve;
+#endif
+
+   spx_word16_t  gamma1;         /**< Perceptual filter: A(z/gamma1) */
+   spx_word16_t  gamma2;         /**< Perceptual filter: A(z/gamma2) */
+   float  lag_factor;     /**< Lag windowing Gaussian width */
+   spx_word16_t  lpc_floor;      /**< Noise floor multiplier for A[0] in LPC analysis*/
+   char  *stack;          /**< Pseudo-stack allocation for temporary memory */
+   spx_sig_t *inBuf;          /**< Input buffer (original signal) */
+   spx_sig_t *frame;          /**< Start of original frame */
+   spx_sig_t *excBuf;         /**< Excitation buffer */
+   spx_sig_t *exc;            /**< Start of excitation frame */
+   spx_sig_t *swBuf;          /**< Weighted signal buffer */
+   spx_sig_t *sw;             /**< Start of weighted signal frame */
+   spx_sig_t *innov;          /**< Innovation for the frame */
+   spx_word16_t *window;         /**< Temporary (Hanning) window */
+   spx_word16_t *autocorr;       /**< auto-correlation */
+   spx_word16_t *lagWindow;      /**< Window applied to auto-correlation */
+   spx_coef_t *lpc;            /**< LPCs for current frame */
+   spx_lsp_t *lsp;            /**< LSPs for current frame */
+   spx_lsp_t *qlsp;           /**< Quantized LSPs for current frame */
+   spx_lsp_t *old_lsp;        /**< LSPs for previous frame */
+   spx_lsp_t *old_qlsp;       /**< Quantized LSPs for previous frame */
+   spx_lsp_t *interp_lsp;     /**< Interpolated LSPs */
+   spx_lsp_t *interp_qlsp;    /**< Interpolated quantized LSPs */
+   spx_coef_t *interp_lpc;     /**< Interpolated LPCs */
+   spx_coef_t *interp_qlpc;    /**< Interpolated quantized LPCs */
+   spx_coef_t *bw_lpc1;        /**< LPCs after bandwidth expansion by gamma1 for perceptual weighting*/
+   spx_coef_t *bw_lpc2;        /**< LPCs after bandwidth expansion by gamma2 for perceptual weighting*/
+   spx_mem_t *mem_sp;         /**< Filter memory for signal synthesis */
+   spx_mem_t *mem_sw;         /**< Filter memory for perceptually-weighted signal */
+   spx_mem_t *mem_sw_whole;   /**< Filter memory for perceptually-weighted signal (whole frame)*/
+   spx_mem_t *mem_exc;        /**< Filter memory for excitation (whole frame) */
+   spx_word32_t *pi_gain;        /**< Gain of LPC filter at theta=pi (fe/2) */
+
+   VBRState *vbr;         /**< State of the VBR data */
+   float  vbr_quality;    /**< Quality setting for VBR encoding */
+   float  relative_quality; /**< Relative quality that will be needed by VBR */
+   int    vbr_enabled;    /**< 1 for enabling VBR, 0 otherwise */
+   int    vad_enabled;    /**< 1 for enabling VAD, 0 otherwise */
+   int    dtx_enabled;    /**< 1 for enabling DTX, 0 otherwise */
+   int    dtx_count;      /**< Number of consecutive DTX frames */
+   int    abr_enabled;    /**< ABR setting (in bps), 0 if off */
+   float  abr_drift;
+   float  abr_drift2;
+   float  abr_count;
+   int    complexity;     /**< Complexity setting (0-10 from least complex to most complex) */
+   int    sampling_rate;
+   int    plc_tuning;
+   int    encode_submode;
+   const SpeexSubmode * const *submodes; /**< Sub-mode data */
+   int    submodeID;      /**< Activated sub-mode */
+   int    submodeSelect;  /**< Mode chosen by the user (may differ from submodeID if VAD is on) */
+} EncState;
+
+/**Structure representing the full state of the narrowband decoder*/
+typedef struct DecState {
+   const SpeexMode *mode;       /**< Mode corresponding to the state */
+   int    first;          /**< Is this the first frame? */
+   int    count_lost;     /**< Was the last frame lost? */
+   int    frameSize;      /**< Size of frames */
+   int    subframeSize;   /**< Size of sub-frames */
+   int    nbSubframes;    /**< Number of sub-frames */
+   int    lpcSize;        /**< LPC order */
+   int    min_pitch;      /**< Minimum pitch value allowed */
+   int    max_pitch;      /**< Maximum pitch value allowed */
+   int    sampling_rate;
+
+#ifdef EPIC_48K
+   int    lbr_48k;
+#endif
+
+   spx_word16_t  last_ol_gain;   /**< Open-loop gain for previous frame */
+
+   char  *stack;          /**< Pseudo-stack allocation for temporary memory */
+   spx_sig_t *inBuf;          /**< Input buffer (original signal) */
+   spx_sig_t *frame;          /**< Start of original frame */
+   spx_sig_t *excBuf;         /**< Excitation buffer */
+   spx_sig_t *exc;            /**< Start of excitation frame */
+   spx_sig_t *innov;          /**< Innovation for the frame */
+   spx_lsp_t *qlsp;           /**< Quantized LSPs for current frame */
+   spx_lsp_t *old_qlsp;       /**< Quantized LSPs for previous frame */
+   spx_lsp_t *interp_qlsp;    /**< Interpolated quantized LSPs */
+   spx_coef_t *interp_qlpc;    /**< Interpolated quantized LPCs */
+   spx_mem_t *mem_sp;         /**< Filter memory for synthesis signal */
+   spx_word32_t *pi_gain;        /**< Gain of LPC filter at theta=pi (fe/2) */
+   int    last_pitch;     /**< Pitch of last correctly decoded frame */
+   spx_word16_t  last_pitch_gain; /**< Pitch gain of last correctly decoded frame */
+   spx_word16_t  pitch_gain_buf[3];  /**< Pitch gain of last decoded frames */
+   int    pitch_gain_buf_idx; /**< Tail of the buffer */
+   spx_int32_t seed;          /** Seed used for random number generation */
+   
+   int    encode_submode;
+   const SpeexSubmode * const *submodes; /**< Sub-mode data */
+   int    submodeID;      /**< Activated sub-mode */
+   int    lpc_enh_enabled; /**< 1 when LPC enhancer is on, 0 otherwise */
+   CombFilterMem *comb_mem;
+   SpeexCallback speex_callbacks[SPEEX_MAX_CALLBACKS];
+
+   SpeexCallback user_callback;
+
+   /*Vocoder data*/
+   float  voc_m1;
+   float  voc_m2;
+   float  voc_mean;
+   int    voc_offset;
+
+   int    dtx_enabled;
+} DecState;
+
+/** Initializes encoder state*/
+void *nb_encoder_init(const SpeexMode *m);
+
+/** De-allocates encoder state resources*/
+void nb_encoder_destroy(void *state);
+
+/** Encodes one frame*/
+int nb_encode(void *state, void *in, SpeexBits *bits);
+
+
+/** Initializes decoder state*/
+void *nb_decoder_init(const SpeexMode *m);
+
+/** De-allocates decoder state resources*/
+void nb_decoder_destroy(void *state);
+
+/** Decodes one frame*/
+int nb_decode(void *state, SpeexBits *bits, void *out);
+
+/** ioctl-like function for controlling a narrowband encoder */
+int nb_encoder_ctl(void *state, int request, void *ptr);
+
+/** ioctl-like function for controlling a narrowband decoder */
+int nb_decoder_ctl(void *state, int request, void *ptr);
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/preprocess_spx.c b/pjmedia/src/pjmedia-codec/speex/preprocess_spx.c
new file mode 100644
index 00000000..826a6766
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/preprocess_spx.c
@@ -0,0 +1,1026 @@
+/* Copyright (C) 2003 Epic Games 
+   Written by Jean-Marc Valin
+
+   File: preprocess.c
+   Preprocessor with denoising based on the algorithm by Ephraim and Malah
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "speex/speex_preprocess.h"
+#include "misc.h"
+#include "smallft.h"
+
+#define max(a,b) ((a) > (b) ? (a) : (b))
+#define min(a,b) ((a) < (b) ? (a) : (b))
+
+#ifndef M_PI
+#define M_PI 3.14159263
+#endif
+
+#define SQRT_M_PI_2 0.88623
+#define LOUDNESS_EXP 2.5
+
+#define NB_BANDS 8
+
+#define SPEEX_PROB_START_DEFAULT    0.35f
+#define SPEEX_PROB_CONTINUE_DEFAULT 0.20f
+
+#define ZMIN .1
+#define ZMAX .316
+#define ZMIN_1 10
+#define LOG_MIN_MAX_1 0.86859
+
+static void conj_window(float *w, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+   {
+      float x=4*((float)i)/len;
+      int inv=0;
+      if (x<1)
+      {
+      } else if (x<2)
+      {
+         x=2-x;
+         inv=1;
+      } else if (x<3)
+      {
+         x=x-2;
+         inv=1;
+      } else {
+         x=4-x;
+      }
+      x*=1.9979;
+      w[i]=(.5-.5*cos(x))*(.5-.5*cos(x));
+      if (inv)
+         w[i]=1-w[i];
+      w[i]=sqrt(w[i]);
+   }
+}
+
+/* This function approximates the gain function 
+   y = gamma(1.25)^2 * M(-.25;1;-x) / sqrt(x)  
+   which multiplied by xi/(1+xi) is the optimal gain
+   in the loudness domain ( sqrt[amplitude] )
+*/
+static inline float hypergeom_gain(float x)
+{
+   int ind;
+   float integer, frac;
+   static const float table[21] = {
+      0.82157f, 1.02017f, 1.20461f, 1.37534f, 1.53363f, 1.68092f, 1.81865f,
+      1.94811f, 2.07038f, 2.18638f, 2.29688f, 2.40255f, 2.50391f, 2.60144f,
+      2.69551f, 2.78647f, 2.87458f, 2.96015f, 3.04333f, 3.12431f, 3.20326f};
+      
+   if (x>9.5)
+      return 1+.1296/x;
+   
+   integer = floor(2*x);
+   frac = 2*x-integer;
+   ind = (int)integer;
+   
+   return ((1-frac)*table[ind] + frac*table[ind+1])/sqrt(x+.0001f);
+}
+
+static inline float qcurve(float x)
+{
+   return 1.f/(1.f+.1f/(x*x));
+}
+
+SpeexPreprocessState *speex_preprocess_state_init(int frame_size, int sampling_rate)
+{
+   int i;
+   int N, N3, N4;
+
+   SpeexPreprocessState *st = (SpeexPreprocessState *)speex_alloc(sizeof(SpeexPreprocessState));
+   st->frame_size = frame_size;
+
+   /* Round ps_size down to the nearest power of two */
+#if 0
+   i=1;
+   st->ps_size = st->frame_size;
+   while(1)
+   {
+      if (st->ps_size & ~i)
+      {
+         st->ps_size &= ~i;
+         i<<=1;
+      } else {
+         break;
+      }
+   }
+   
+   
+   if (st->ps_size < 3*st->frame_size/4)
+      st->ps_size = st->ps_size * 3 / 2;
+#else
+   st->ps_size = st->frame_size;
+#endif
+
+   N = st->ps_size;
+   N3 = 2*N - st->frame_size;
+   N4 = st->frame_size - N3;
+   
+   st->sampling_rate = sampling_rate;
+   st->denoise_enabled = 1;
+   st->agc_enabled = 0;
+   st->agc_level = 8000;
+   st->vad_enabled = 0;
+   st->dereverb_enabled = 0;
+   st->reverb_decay = .5;
+   st->reverb_level = .2;
+
+   st->speech_prob_start = SPEEX_PROB_START_DEFAULT;
+   st->speech_prob_continue = SPEEX_PROB_CONTINUE_DEFAULT;
+
+   st->frame = (float*)speex_alloc(2*N*sizeof(float));
+   st->ps = (float*)speex_alloc(N*sizeof(float));
+   st->gain2 = (float*)speex_alloc(N*sizeof(float));
+   st->window = (float*)speex_alloc(2*N*sizeof(float));
+   st->noise = (float*)speex_alloc(N*sizeof(float));
+   st->reverb_estimate = (float*)speex_alloc(N*sizeof(float));
+   st->old_ps = (float*)speex_alloc(N*sizeof(float));
+   st->gain = (float*)speex_alloc(N*sizeof(float));
+   st->prior = (float*)speex_alloc(N*sizeof(float));
+   st->post = (float*)speex_alloc(N*sizeof(float));
+   st->loudness_weight = (float*)speex_alloc(N*sizeof(float));
+   st->inbuf = (float*)speex_alloc(N3*sizeof(float));
+   st->outbuf = (float*)speex_alloc(N3*sizeof(float));
+   st->echo_noise = (float*)speex_alloc(N*sizeof(float));
+
+   st->S = (float*)speex_alloc(N*sizeof(float));
+   st->Smin = (float*)speex_alloc(N*sizeof(float));
+   st->Stmp = (float*)speex_alloc(N*sizeof(float));
+   st->update_prob = (float*)speex_alloc(N*sizeof(float));
+
+   st->zeta = (float*)speex_alloc(N*sizeof(float));
+   st->Zpeak = 0;
+   st->Zlast = 0;
+
+   st->noise_bands = (float*)speex_alloc(NB_BANDS*sizeof(float));
+   st->noise_bands2 = (float*)speex_alloc(NB_BANDS*sizeof(float));
+   st->speech_bands = (float*)speex_alloc(NB_BANDS*sizeof(float));
+   st->speech_bands2 = (float*)speex_alloc(NB_BANDS*sizeof(float));
+   st->noise_bandsN = st->speech_bandsN = 1;
+
+   conj_window(st->window, 2*N3);
+   for (i=2*N3;i<2*st->ps_size;i++)
+      st->window[i]=1;
+   
+   if (N4>0)
+   {
+      for (i=N3-1;i>=0;i--)
+      {
+         st->window[i+N3+N4]=st->window[i+N3];
+         st->window[i+N3]=1;
+      }
+   }
+   for (i=0;i<N;i++)
+   {
+      st->noise[i]=1e4;
+      st->reverb_estimate[i]=0.;
+      st->old_ps[i]=1e4;
+      st->gain[i]=1;
+      st->post[i]=1;
+      st->prior[i]=1;
+   }
+
+   for (i=0;i<N3;i++)
+   {
+      st->inbuf[i]=0;
+      st->outbuf[i]=0;
+   }
+
+   for (i=0;i<N;i++)
+   {
+      float ff=((float)i)*.5*sampling_rate/((float)N);
+      st->loudness_weight[i] = .35f-.35f*ff/16000.f+.73f*exp(-.5f*(ff-3800)*(ff-3800)/9e5f);
+      if (st->loudness_weight[i]<.01f)
+         st->loudness_weight[i]=.01f;
+      st->loudness_weight[i] *= st->loudness_weight[i];
+   }
+
+   st->speech_prob = 0;
+   st->last_speech = 1000;
+   st->loudness = pow(6000,LOUDNESS_EXP);
+   st->loudness2 = 6000;
+   st->nb_loudness_adapt = 0;
+
+   st->fft_lookup = (struct drft_lookup*)speex_alloc(sizeof(struct drft_lookup));
+   spx_drft_init(st->fft_lookup,2*N);
+
+   st->nb_adapt=0;
+   st->consec_noise=0;
+   st->nb_preprocess=0;
+   return st;
+}
+
+void speex_preprocess_state_destroy(SpeexPreprocessState *st)
+{
+   speex_free(st->frame);
+   speex_free(st->ps);
+   speex_free(st->gain2);
+   speex_free(st->window);
+   speex_free(st->noise);
+   speex_free(st->reverb_estimate);
+   speex_free(st->old_ps);
+   speex_free(st->gain);
+   speex_free(st->prior);
+   speex_free(st->post);
+   speex_free(st->loudness_weight);
+   speex_free(st->echo_noise);
+
+   speex_free(st->S);
+   speex_free(st->Smin);
+   speex_free(st->Stmp);
+   speex_free(st->update_prob);
+   speex_free(st->zeta);
+
+   speex_free(st->noise_bands);
+   speex_free(st->noise_bands2);
+   speex_free(st->speech_bands);
+   speex_free(st->speech_bands2);
+
+   speex_free(st->inbuf);
+   speex_free(st->outbuf);
+
+   spx_drft_clear(st->fft_lookup);
+   speex_free(st->fft_lookup);
+
+   speex_free(st);
+}
+
+static void update_noise(SpeexPreprocessState *st, float *ps, spx_int32_t *echo)
+{
+   int i;
+   float beta;
+   st->nb_adapt++;
+   beta=1.0f/st->nb_adapt;
+   if (beta < .05f)
+      beta=.05f;
+   
+   if (!echo)
+   {
+      for (i=0;i<st->ps_size;i++)
+         st->noise[i] = (1.f-beta)*st->noise[i] + beta*ps[i];
+   } else {
+      for (i=0;i<st->ps_size;i++)
+         st->noise[i] = (1.f-beta)*st->noise[i] + beta*max(1.f,ps[i]-st->frame_size*st->frame_size*4.0*echo[i]); 
+#if 0
+      for (i=0;i<st->ps_size;i++)
+         st->noise[i] = 0;
+#endif
+   }
+}
+
+static int speex_compute_vad(SpeexPreprocessState *st, float *ps, float mean_prior, float mean_post)
+{
+   int i, is_speech=0;
+   int N = st->ps_size;
+   float scale=.5f/N;
+
+   /* FIXME: Clean this up a bit */
+   {
+      float bands[NB_BANDS];
+      int j;
+      float p0, p1;
+      float tot_loudness=0;
+      float x = sqrt(mean_post);
+
+      for (i=5;i<N-10;i++)
+      {
+         tot_loudness += scale*st->ps[i] * st->loudness_weight[i];
+      }
+
+      for (i=0;i<NB_BANDS;i++)
+      {
+         bands[i]=1e4f;
+         for (j=i*N/NB_BANDS;j<(i+1)*N/NB_BANDS;j++)
+         {
+            bands[i] += ps[j];
+         }
+         bands[i]=log(bands[i]);
+      }
+      
+      /*p1 = .0005+.6*exp(-.5*(x-.4)*(x-.4)*11)+.1*exp(-1.2*x);
+      if (x<1.5)
+         p0=.1*exp(2*(x-1.5));
+      else
+         p0=.02+.1*exp(-.2*(x-1.5));
+      */
+
+      p0=1.f/(1.f+exp(3.f*(1.5f-x)));
+      p1=1.f-p0;
+
+      /*fprintf (stderr, "%f %f ", p0, p1);*/
+      /*p0 *= .99*st->speech_prob + .01*(1-st->speech_prob);
+      p1 *= .01*st->speech_prob + .99*(1-st->speech_prob);
+      
+      st->speech_prob = p0/(p1+p0);
+      */
+
+      if (st->noise_bandsN < 50 || st->speech_bandsN < 50)
+      {
+         if (mean_post > 5.f)
+         {
+            float adapt = 1./st->speech_bandsN++;
+            if (adapt<.005f)
+               adapt = .005f;
+            for (i=0;i<NB_BANDS;i++)
+            {
+               st->speech_bands[i] = (1.f-adapt)*st->speech_bands[i] + adapt*bands[i];
+               /*st->speech_bands2[i] = (1-adapt)*st->speech_bands2[i] + adapt*bands[i]*bands[i];*/
+               st->speech_bands2[i] = (1.f-adapt)*st->speech_bands2[i] + adapt*(bands[i]-st->speech_bands[i])*(bands[i]-st->speech_bands[i]);
+            }
+         } else {
+            float adapt = 1./st->noise_bandsN++;
+            if (adapt<.005f)
+               adapt = .005f;
+            for (i=0;i<NB_BANDS;i++)
+            {
+               st->noise_bands[i] = (1.f-adapt)*st->noise_bands[i] + adapt*bands[i];
+               /*st->noise_bands2[i] = (1-adapt)*st->noise_bands2[i] + adapt*bands[i]*bands[i];*/
+               st->noise_bands2[i] = (1.f-adapt)*st->noise_bands2[i] + adapt*(bands[i]-st->noise_bands[i])*(bands[i]-st->noise_bands[i]);
+            }
+         }
+      }
+      p0=p1=1;
+      for (i=0;i<NB_BANDS;i++)
+      {
+         float noise_var, speech_var;
+         float noise_mean, speech_mean;
+         float tmp1, tmp2, pr;
+
+         /*noise_var = 1.01*st->noise_bands2[i] - st->noise_bands[i]*st->noise_bands[i];
+           speech_var = 1.01*st->speech_bands2[i] - st->speech_bands[i]*st->speech_bands[i];*/
+         noise_var = st->noise_bands2[i];
+         speech_var = st->speech_bands2[i];
+         if (noise_var < .1f)
+            noise_var = .1f;
+         if (speech_var < .1f)
+            speech_var = .1f;
+         
+         /*speech_var = sqrt(speech_var*noise_var);
+           noise_var = speech_var;*/
+         if (speech_var < .05f*speech_var)
+            noise_var = .05f*speech_var; 
+         if (speech_var < .05f*noise_var)
+            speech_var = .05f*noise_var;
+         
+         if (bands[i] < st->noise_bands[i])
+            speech_var = noise_var;
+         if (bands[i] > st->speech_bands[i])
+            noise_var = speech_var;
+
+         speech_mean = st->speech_bands[i];
+         noise_mean = st->noise_bands[i];
+         if (noise_mean < speech_mean - 5.f)
+            noise_mean = speech_mean - 5.f;
+
+         tmp1 = exp(-.5f*(bands[i]-speech_mean)*(bands[i]-speech_mean)/speech_var)/sqrt(2.f*M_PI*speech_var);
+         tmp2 = exp(-.5f*(bands[i]-noise_mean)*(bands[i]-noise_mean)/noise_var)/sqrt(2.f*M_PI*noise_var);
+         /*fprintf (stderr, "%f ", (float)(p0/(.01+p0+p1)));*/
+         /*fprintf (stderr, "%f ", (float)(bands[i]));*/
+         pr = tmp1/(1e-25+tmp1+tmp2);
+         /*if (bands[i] < st->noise_bands[i])
+            pr=.01;
+         if (bands[i] > st->speech_bands[i] && pr < .995)
+         pr=.995;*/
+         if (pr>.999f)
+            pr=.999f;
+         if (pr<.001f)
+            pr=.001f;
+         /*fprintf (stderr, "%f ", pr);*/
+         p0 *= pr;
+         p1 *= (1-pr);
+      }
+
+      p0 = pow(p0,.2);
+      p1 = pow(p1,.2);      
+      
+#if 1
+      p0 *= 2.f;
+      p0=p0/(p1+p0);
+      if (st->last_speech>20) 
+      {
+         float tmp = sqrt(tot_loudness)/st->loudness2;
+         tmp = 1.f-exp(-10.f*tmp);
+         if (p0>tmp)
+            p0=tmp;
+      }
+      p1=1-p0;
+#else
+      if (sqrt(tot_loudness) < .6f*st->loudness2 && p0>15.f*p1)
+         p0=15.f*p1;
+      if (sqrt(tot_loudness) < .45f*st->loudness2 && p0>7.f*p1)
+         p0=7.f*p1;
+      if (sqrt(tot_loudness) < .3f*st->loudness2 && p0>3.f*p1)
+         p0=3.f*p1;
+      if (sqrt(tot_loudness) < .15f*st->loudness2 && p0>p1)
+         p0=p1;
+      /*fprintf (stderr, "%f %f ", (float)(sqrt(tot_loudness) /( .25*st->loudness2)), p0/(p1+p0));*/
+#endif
+
+      p0 *= .99f*st->speech_prob + .01f*(1-st->speech_prob);
+      p1 *= .01f*st->speech_prob + .99f*(1-st->speech_prob);
+      
+      st->speech_prob = p0/(1e-25f+p1+p0);
+      /*fprintf (stderr, "%f %f %f ", tot_loudness, st->loudness2, st->speech_prob);*/
+
+      if (st->speech_prob > st->speech_prob_start
+         || (st->last_speech < 20 && st->speech_prob > st->speech_prob_continue))
+      {
+         is_speech = 1;
+         st->last_speech = 0;
+      } else {
+         st->last_speech++;
+         if (st->last_speech<20)
+           is_speech = 1;
+      }
+
+      if (st->noise_bandsN > 50 && st->speech_bandsN > 50)
+      {
+         if (mean_post > 5)
+         {
+            float adapt = 1./st->speech_bandsN++;
+            if (adapt<.005f)
+               adapt = .005f;
+            for (i=0;i<NB_BANDS;i++)
+            {
+               st->speech_bands[i] = (1-adapt)*st->speech_bands[i] + adapt*bands[i];
+               /*st->speech_bands2[i] = (1-adapt)*st->speech_bands2[i] + adapt*bands[i]*bands[i];*/
+               st->speech_bands2[i] = (1-adapt)*st->speech_bands2[i] + adapt*(bands[i]-st->speech_bands[i])*(bands[i]-st->speech_bands[i]);
+            }
+         } else {
+            float adapt = 1./st->noise_bandsN++;
+            if (adapt<.005f)
+               adapt = .005f;
+            for (i=0;i<NB_BANDS;i++)
+            {
+               st->noise_bands[i] = (1-adapt)*st->noise_bands[i] + adapt*bands[i];
+               /*st->noise_bands2[i] = (1-adapt)*st->noise_bands2[i] + adapt*bands[i]*bands[i];*/
+               st->noise_bands2[i] = (1-adapt)*st->noise_bands2[i] + adapt*(bands[i]-st->noise_bands[i])*(bands[i]-st->noise_bands[i]);
+            }
+         }
+      }
+
+
+   }
+
+   return is_speech;
+}
+
+static void speex_compute_agc(SpeexPreprocessState *st, float mean_prior)
+{
+   int i;
+   int N = st->ps_size;
+   float scale=.5f/N;
+   float agc_gain;
+   int freq_start, freq_end;
+   float active_bands = 0;
+
+   freq_start = (int)(300.0f*2*N/st->sampling_rate);
+   freq_end   = (int)(2000.0f*2*N/st->sampling_rate);
+   for (i=freq_start;i<freq_end;i++)
+   {
+      if (st->S[i] > 20.f*st->Smin[i]+1000.f)
+         active_bands+=1;
+   }
+   active_bands /= (freq_end-freq_start+1);
+
+   if (active_bands > .2f)
+   {
+      float loudness=0.f;
+      float rate, rate2=.2f;
+      st->nb_loudness_adapt++;
+      rate=2.0f/(1+st->nb_loudness_adapt);
+      if (rate < .05f)
+         rate = .05f;
+      if (rate < .1f && pow(loudness, LOUDNESS_EXP) > st->loudness)
+         rate = .1f;
+      if (rate < .2f && pow(loudness, LOUDNESS_EXP) > 3.f*st->loudness)
+         rate = .2f;
+      if (rate < .4f && pow(loudness, LOUDNESS_EXP) > 10.f*st->loudness)
+         rate = .4f;
+
+      for (i=2;i<N;i++)
+      {
+         loudness += scale*st->ps[i] * st->gain2[i] * st->gain2[i] * st->loudness_weight[i];
+      }
+      loudness=sqrt(loudness);
+      /*if (loudness < 2*pow(st->loudness, 1.0/LOUDNESS_EXP) &&
+        loudness*2 > pow(st->loudness, 1.0/LOUDNESS_EXP))*/
+      st->loudness = (1-rate)*st->loudness + (rate)*pow(loudness, LOUDNESS_EXP);
+      
+      st->loudness2 = (1-rate2)*st->loudness2 + rate2*pow(st->loudness, 1.0f/LOUDNESS_EXP);
+
+      loudness = pow(st->loudness, 1.0f/LOUDNESS_EXP);
+
+      /*fprintf (stderr, "%f %f %f\n", loudness, st->loudness2, rate);*/
+   }
+   
+   agc_gain = st->agc_level/st->loudness2;
+   /*fprintf (stderr, "%f %f %f %f\n", active_bands, st->loudness, st->loudness2, agc_gain);*/
+   if (agc_gain>200)
+      agc_gain = 200;
+
+   for (i=0;i<N;i++)
+      st->gain2[i] *= agc_gain;
+   
+}
+
+static void preprocess_analysis(SpeexPreprocessState *st, spx_int16_t *x)
+{
+   int i;
+   int N = st->ps_size;
+   int N3 = 2*N - st->frame_size;
+   int N4 = st->frame_size - N3;
+   float *ps=st->ps;
+
+   /* 'Build' input frame */
+   for (i=0;i<N3;i++)
+      st->frame[i]=st->inbuf[i];
+   for (i=0;i<st->frame_size;i++)
+      st->frame[N3+i]=x[i];
+   
+   /* Update inbuf */
+   for (i=0;i<N3;i++)
+      st->inbuf[i]=x[N4+i];
+
+   /* Windowing */
+   for (i=0;i<2*N;i++)
+      st->frame[i] *= st->window[i];
+
+   /* Perform FFT */
+   spx_drft_forward(st->fft_lookup, st->frame);
+
+   /* Power spectrum */
+   ps[0]=1;
+   for (i=1;i<N;i++)
+      ps[i]=1+st->frame[2*i-1]*st->frame[2*i-1] + st->frame[2*i]*st->frame[2*i];
+
+}
+
+static void update_noise_prob(SpeexPreprocessState *st)
+{
+   int i;
+   int N = st->ps_size;
+
+   for (i=1;i<N-1;i++)
+      st->S[i] = 100.f+ .8f*st->S[i] + .05f*st->ps[i-1]+.1f*st->ps[i]+.05f*st->ps[i+1];
+   
+   if (st->nb_preprocess<1)
+   {
+      for (i=1;i<N-1;i++)
+         st->Smin[i] = st->Stmp[i] = st->S[i]+100.f;
+   }
+
+   if (st->nb_preprocess%200==0)
+   {
+      for (i=1;i<N-1;i++)
+      {
+         st->Smin[i] = min(st->Stmp[i], st->S[i]);
+         st->Stmp[i] = st->S[i];
+      }
+   } else {
+      for (i=1;i<N-1;i++)
+      {
+         st->Smin[i] = min(st->Smin[i], st->S[i]);
+         st->Stmp[i] = min(st->Stmp[i], st->S[i]);      
+      }
+   }
+   for (i=1;i<N-1;i++)
+   {
+      st->update_prob[i] *= .2f;
+      if (st->S[i] > 2.5*st->Smin[i])
+         st->update_prob[i] += .8f;
+      /*fprintf (stderr, "%f ", st->S[i]/st->Smin[i]);*/
+      /*fprintf (stderr, "%f ", st->update_prob[i]);*/
+   }
+
+}
+
+#define NOISE_OVERCOMPENS 1.4
+
+int speex_preprocess(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo)
+{
+   int i;
+   int is_speech=1;
+   float mean_post=0;
+   float mean_prior=0;
+   int N = st->ps_size;
+   int N3 = 2*N - st->frame_size;
+   int N4 = st->frame_size - N3;
+   float scale=.5f/N;
+   float *ps=st->ps;
+   float Zframe=0, Pframe;
+
+   preprocess_analysis(st, x);
+
+   update_noise_prob(st);
+
+   st->nb_preprocess++;
+
+   /* Noise estimation always updated for the 20 first times */
+   if (st->nb_adapt<10)
+   {
+      update_noise(st, ps, echo);
+   }
+
+   /* Deal with residual echo if provided */
+   if (echo)
+      for (i=1;i<N;i++)
+         st->echo_noise[i] = (.3f*st->echo_noise[i] + st->frame_size*st->frame_size*4.0*echo[i]);
+
+   /* Compute a posteriori SNR */
+   for (i=1;i<N;i++)
+   {
+      float tot_noise = 1.f+ NOISE_OVERCOMPENS*st->noise[i] + st->echo_noise[i] + st->reverb_estimate[i];
+      st->post[i] = ps[i]/tot_noise - 1.f;
+      if (st->post[i]>100.f)
+         st->post[i]=100.f;
+      /*if (st->post[i]<0)
+        st->post[i]=0;*/
+      mean_post+=st->post[i];
+   }
+   mean_post /= N;
+   if (mean_post<0.f)
+      mean_post=0.f;
+
+   /* Special case for first frame */
+   if (st->nb_adapt==1)
+      for (i=1;i<N;i++)
+         st->old_ps[i] = ps[i];
+
+   /* Compute a priori SNR */
+   {
+      /* A priori update rate */
+      for (i=1;i<N;i++)
+      {
+         float gamma = .1+.9*st->prior[i]*st->prior[i]/((1+st->prior[i])*(1+st->prior[i]));
+         float tot_noise = 1.f+ NOISE_OVERCOMPENS*st->noise[i] + st->echo_noise[i] + st->reverb_estimate[i];
+         /* A priori SNR update */
+         st->prior[i] = gamma*max(0.0f,st->post[i]) +
+               (1.f-gamma)* (.8*st->gain[i]*st->gain[i]*st->old_ps[i]/tot_noise + .2*st->prior[i]);
+         
+         if (st->prior[i]>100.f)
+            st->prior[i]=100.f;
+         
+         mean_prior+=st->prior[i];
+      }
+   }
+   mean_prior /= N;
+
+#if 0
+   for (i=0;i<N;i++)
+   {
+      fprintf (stderr, "%f ", st->prior[i]);
+   }
+   fprintf (stderr, "\n");
+#endif
+   /*fprintf (stderr, "%f %f\n", mean_prior,mean_post);*/
+
+   if (st->nb_preprocess>=20)
+   {
+      int do_update = 0;
+      float noise_ener=0, sig_ener=0;
+      /* If SNR is low (both a priori and a posteriori), update the noise estimate*/
+      /*if (mean_prior<.23 && mean_post < .5)*/
+      if (mean_prior<.23f && mean_post < .5f)
+         do_update = 1;
+      for (i=1;i<N;i++)
+      {
+         noise_ener += st->noise[i];
+         sig_ener += ps[i];
+      }
+      if (noise_ener > 3.f*sig_ener)
+         do_update = 1;
+      /*do_update = 0;*/
+      if (do_update)
+      {
+         st->consec_noise++;
+      } else {
+         st->consec_noise=0;
+      }
+   }
+
+   if (st->vad_enabled)
+      is_speech = speex_compute_vad(st, ps, mean_prior, mean_post);
+
+
+   if (st->consec_noise>=3)
+   {
+      update_noise(st, st->old_ps, echo);
+   } else {
+      for (i=1;i<N-1;i++)
+      {
+         if (st->update_prob[i]<.5f/* || st->ps[i] < st->noise[i]*/)
+         {
+            if (echo)
+               st->noise[i] = .95f*st->noise[i] + .05f*max(1.0f,st->ps[i]-st->frame_size*st->frame_size*4.0*echo[i]);
+            else
+               st->noise[i] = .95f*st->noise[i] + .05f*st->ps[i];
+         }
+      }
+   }
+
+   for (i=1;i<N;i++)
+   {
+      st->zeta[i] = .7f*st->zeta[i] + .3f*st->prior[i];
+   }
+
+   {
+      int freq_start = (int)(300.0f*2.f*N/st->sampling_rate);
+      int freq_end   = (int)(2000.0f*2.f*N/st->sampling_rate);
+      for (i=freq_start;i<freq_end;i++)
+      {
+         Zframe += st->zeta[i];         
+      }
+      Zframe /= (freq_end-freq_start);
+   }
+   st->Zlast = Zframe;
+
+   Pframe = qcurve(Zframe);
+
+   /*fprintf (stderr, "%f\n", Pframe);*/
+   /* Compute gain according to the Ephraim-Malah algorithm */
+   for (i=1;i<N;i++)
+   {
+      float MM;
+      float theta;
+      float prior_ratio;
+      float p, q;
+      float zeta1;
+      float P1;
+
+      prior_ratio = st->prior[i]/(1.0001f+st->prior[i]);
+      theta = (1.f+st->post[i])*prior_ratio;
+
+      if (i==1 || i==N-1)
+         zeta1 = st->zeta[i];
+      else
+         zeta1 = .25f*st->zeta[i-1] + .5f*st->zeta[i] + .25f*st->zeta[i+1];
+      P1 = qcurve (zeta1);
+      
+      /* FIXME: add global prob (P2) */
+      q = 1-Pframe*P1;
+      q = 1-P1;
+      if (q>.95f)
+         q=.95f;
+      p=1.f/(1.f + (q/(1.f-q))*(1.f+st->prior[i])*exp(-theta));
+      /*p=1;*/
+
+      /* Optimal estimator for loudness domain */
+      MM = hypergeom_gain(theta);
+
+      st->gain[i] = prior_ratio * MM;
+      /*Put some (very arbitraty) limit on the gain*/
+      if (st->gain[i]>2.f)
+      {
+         st->gain[i]=2.f;
+      }
+      
+      st->reverb_estimate[i] = st->reverb_decay*st->reverb_estimate[i] + st->reverb_decay*st->reverb_level*st->gain[i]*st->gain[i]*st->ps[i];
+      if (st->denoise_enabled)
+      {
+         st->gain2[i] = p*p*st->gain[i];
+         /*st->gain2[i]=(p*sqrt(st->gain[i])+.05*(1-p))*(p*sqrt(st->gain[i])+.05*(1-p));*/
+         /*st->gain2[i] = pow(st->gain[i], p) * pow(.2f,1.f-p);*/
+      } else {
+         st->gain2[i]=1.f;
+      }
+   }
+   
+   st->gain2[0]=st->gain[0]=0.f;
+   st->gain2[N-1]=st->gain[N-1]=0.f;
+   /*
+   for (i=30;i<N-2;i++)
+   {
+      st->gain[i] = st->gain2[i]*st->gain2[i] + (1-st->gain2[i])*.333*(.6*st->gain2[i-1]+st->gain2[i]+.6*st->gain2[i+1]+.4*st->gain2[i-2]+.4*st->gain2[i+2]);
+   }
+   for (i=30;i<N-2;i++)
+      st->gain2[i] = st->gain[i];
+   */
+   if (st->agc_enabled)
+      speex_compute_agc(st, mean_prior);
+
+#if 0
+   if (!is_speech)
+   {
+      for (i=0;i<N;i++)
+         st->gain2[i] = 0;
+   }
+#if 0
+ else {
+      for (i=0;i<N;i++)
+         st->gain2[i] = 1;
+   }
+#endif
+#endif
+
+   /* Apply computed gain */
+   for (i=1;i<N;i++)
+   {
+      st->frame[2*i-1] *= st->gain2[i];
+      st->frame[2*i] *= st->gain2[i];
+   }
+
+   /* Get rid of the DC and very low frequencies */
+   st->frame[0]=0;
+   st->frame[1]=0;
+   st->frame[2]=0;
+   /* Nyquist frequency is mostly useless too */
+   st->frame[2*N-1]=0;
+
+   /* Inverse FFT with 1/N scaling */
+   spx_drft_backward(st->fft_lookup, st->frame);
+
+   for (i=0;i<2*N;i++)
+      st->frame[i] *= scale;
+
+   {
+      float max_sample=0;
+      for (i=0;i<2*N;i++)
+         if (fabs(st->frame[i])>max_sample)
+            max_sample = fabs(st->frame[i]);
+      if (max_sample>28000.f)
+      {
+         float damp = 28000.f/max_sample;
+         for (i=0;i<2*N;i++)
+            st->frame[i] *= damp;
+      }
+   }
+
+   for (i=0;i<2*N;i++)
+      st->frame[i] *= st->window[i];
+
+   /* Perform overlap and add */
+   for (i=0;i<N3;i++)
+      x[i] = st->outbuf[i] + st->frame[i];
+   for (i=0;i<N4;i++)
+      x[N3+i] = st->frame[N3+i];
+   
+   /* Update outbuf */
+   for (i=0;i<N3;i++)
+      st->outbuf[i] = st->frame[st->frame_size+i];
+
+   /* Save old power spectrum */
+   for (i=1;i<N;i++)
+      st->old_ps[i] = ps[i];
+
+   return is_speech;
+}
+
+void speex_preprocess_estimate_update(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo)
+{
+   int i;
+   int N = st->ps_size;
+   int N3 = 2*N - st->frame_size;
+
+   float *ps=st->ps;
+
+   preprocess_analysis(st, x);
+
+   update_noise_prob(st);
+
+   st->nb_preprocess++;
+   
+   for (i=1;i<N-1;i++)
+   {
+      if (st->update_prob[i]<.5f || st->ps[i] < st->noise[i])
+      {
+         if (echo)
+            st->noise[i] = .95f*st->noise[i] + .1f*max(1.0f,st->ps[i]-st->frame_size*st->frame_size*4.0*echo[i]);
+         else
+            st->noise[i] = .95f*st->noise[i] + .1f*st->ps[i];
+      }
+   }
+
+   for (i=0;i<N3;i++)
+      st->outbuf[i] = x[st->frame_size-N3+i]*st->window[st->frame_size+i];
+
+   /* Save old power spectrum */
+   for (i=1;i<N;i++)
+      st->old_ps[i] = ps[i];
+
+   for (i=1;i<N;i++)
+      st->reverb_estimate[i] *= st->reverb_decay;
+}
+
+
+int speex_preprocess_ctl(SpeexPreprocessState *state, int request, void *ptr)
+{
+   int i;
+   SpeexPreprocessState *st;
+   st=(SpeexPreprocessState*)state;
+   switch(request)
+   {
+   case SPEEX_PREPROCESS_SET_DENOISE:
+      st->denoise_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_PREPROCESS_GET_DENOISE:
+      (*(int*)ptr) = st->denoise_enabled;
+      break;
+
+   case SPEEX_PREPROCESS_SET_AGC:
+      st->agc_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_PREPROCESS_GET_AGC:
+      (*(int*)ptr) = st->agc_enabled;
+      break;
+
+   case SPEEX_PREPROCESS_SET_AGC_LEVEL:
+      st->agc_level = (*(float*)ptr);
+      if (st->agc_level<1)
+         st->agc_level=1;
+      if (st->agc_level>32768)
+         st->agc_level=32768;
+      break;
+   case SPEEX_PREPROCESS_GET_AGC_LEVEL:
+      (*(float*)ptr) = st->agc_level;
+      break;
+
+   case SPEEX_PREPROCESS_SET_VAD:
+      st->vad_enabled = (*(int*)ptr);
+      break;
+   case SPEEX_PREPROCESS_GET_VAD:
+      (*(int*)ptr) = st->vad_enabled;
+      break;
+   
+   case SPEEX_PREPROCESS_SET_DEREVERB:
+      st->dereverb_enabled = (*(int*)ptr);
+      for (i=0;i<st->ps_size;i++)
+         st->reverb_estimate[i]=0;
+      break;
+   case SPEEX_PREPROCESS_GET_DEREVERB:
+      (*(int*)ptr) = st->dereverb_enabled;
+      break;
+
+   case SPEEX_PREPROCESS_SET_DEREVERB_LEVEL:
+      st->reverb_level = (*(float*)ptr);
+      break;
+   case SPEEX_PREPROCESS_GET_DEREVERB_LEVEL:
+      (*(float*)ptr) = st->reverb_level;
+      break;
+   
+   case SPEEX_PREPROCESS_SET_DEREVERB_DECAY:
+      st->reverb_decay = (*(float*)ptr);
+      break;
+   case SPEEX_PREPROCESS_GET_DEREVERB_DECAY:
+      (*(float*)ptr) = st->reverb_decay;
+      break;
+
+   case SPEEX_PREPROCESS_SET_PROB_START:
+      st->speech_prob_start = (*(int*)ptr) / 100.0;
+      if ( st->speech_prob_start > 1 || st->speech_prob_start < 0 )
+         st->speech_prob_start = SPEEX_PROB_START_DEFAULT;
+      break;
+   case SPEEX_PREPROCESS_GET_PROB_START:
+      (*(int*)ptr) = st->speech_prob_start * 100;
+      break;
+
+   case SPEEX_PREPROCESS_SET_PROB_CONTINUE:
+      st->speech_prob_continue = (*(int*)ptr) / 100.0;
+      if ( st->speech_prob_continue > 1 || st->speech_prob_continue < 0 )
+         st->speech_prob_continue = SPEEX_PROB_CONTINUE_DEFAULT;
+      break;
+   case SPEEX_PREPROCESS_GET_PROB_CONTINUE:
+      (*(int*)ptr) = st->speech_prob_continue * 100;
+      break;
+
+      default:
+      speex_warning_int("Unknown speex_preprocess_ctl request: ", request);
+      return -1;
+   }
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/pseudofloat.h b/pjmedia/src/pjmedia-codec/speex/pseudofloat.h
new file mode 100644
index 00000000..8642bf0c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/pseudofloat.h
@@ -0,0 +1,306 @@
+/* Copyright (C) 2005 Jean-Marc Valin */
+/**
+   @file pseudofloat.h
+   @brief Pseudo-floating point
+ */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef PSEUDOFLOAT_H
+#define PSEUDOFLOAT_H
+
+#include "misc.h"
+#include <math.h>
+
+#ifdef FIXED_POINT
+
+typedef struct {
+   spx_int16_t m;
+   spx_int16_t e;
+} spx_float_t;
+
+#define FLOAT_ZERO ((spx_float_t){0,0})
+#define FLOAT_ONE ((spx_float_t){16384,-14})
+#define FLOAT_HALF ((spx_float_t){16384,-15})
+
+#define MIN(a,b) ((a)<(b)?(a):(b))
+static inline spx_float_t PSEUDOFLOAT(spx_int32_t x)
+{
+   int e=0;
+   int sign=0;
+   if (x<0)
+   {
+      sign = 1;
+      x = -x;
+   }
+   if (x==0)
+      return (spx_float_t) {0,0};
+   while (x>32767)
+   {
+      x >>= 1;
+      /*x *= .5;*/
+      e++;
+   }
+   while (x<16383)
+   {
+      x <<= 1;
+      /*x *= 2;*/
+      e--;
+   }
+   if (sign)
+      return (spx_float_t) {-x,e};
+   else      
+      return (spx_float_t) {x,e};
+}
+
+
+static inline spx_float_t FLOAT_ADD(spx_float_t a, spx_float_t b)
+{
+   spx_float_t r;
+   if (a.m==0)
+      return b;
+   else if (b.m==0)
+      return a;
+   r = (a).e > (b).e ? (spx_float_t) {((a).m>>1) + ((b).m>>MIN(15,(a).e-(b).e+1)),(a).e+1} : (spx_float_t) {((b).m>>1) + ((a).m>>MIN(15,(b).e-(a).e+1)),(b).e+1};
+   if (r.m>0)
+   {
+      if (r.m<16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   } else {
+      if (r.m>-16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   }
+   /*printf ("%f + %f = %f\n", REALFLOAT(a), REALFLOAT(b), REALFLOAT(r));*/
+   return r;
+}
+
+static inline spx_float_t FLOAT_SUB(spx_float_t a, spx_float_t b)
+{
+   spx_float_t r;
+   if (a.m==0)
+      return b;
+   else if (b.m==0)
+      return a;
+   r = (a).e > (b).e ? (spx_float_t) {((a).m>>1) - ((b).m>>MIN(15,(a).e-(b).e+1)),(a).e+1} : (spx_float_t) {((a).m>>MIN(15,(b).e-(a).e+1)) - ((b).m>>1) ,(b).e+1};
+   if (r.m>0)
+   {
+      if (r.m<16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   } else {
+      if (r.m>-16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   }
+   /*printf ("%f + %f = %f\n", REALFLOAT(a), REALFLOAT(b), REALFLOAT(r));*/
+   return r;
+}
+
+static inline int FLOAT_LT(spx_float_t a, spx_float_t b)
+{
+   if (a.m==0)
+      return b.m<0;
+   else if (b.m==0)
+      return a.m>0;   
+   if ((a).e > (b).e)
+      return ((a).m>>1) < ((b).m>>MIN(15,(a).e-(b).e+1));
+   else 
+      return ((b).m>>1) > ((a).m>>MIN(15,(b).e-(a).e+1));
+
+}
+
+static inline int FLOAT_GT(spx_float_t a, spx_float_t b)
+{
+   return FLOAT_LT(b,a);
+}
+
+static inline spx_float_t FLOAT_MULT(spx_float_t a, spx_float_t b)
+{
+   spx_float_t r = (spx_float_t) {(spx_int16_t)((spx_int32_t)(a).m*(b).m>>15), (a).e+(b).e+15};
+   if (r.m>0)
+   {
+      if (r.m<16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   } else {
+      if (r.m>-16384)
+      {
+         r.m<<=1;
+         r.e-=1;
+      }
+   }
+   /*printf ("%f * %f = %f\n", REALFLOAT(a), REALFLOAT(b), REALFLOAT(r));*/
+   return r;   
+}
+
+
+static inline spx_float_t FLOAT_SHL(spx_float_t a, int b)
+{
+   return (spx_float_t) {a.m,a.e+b};
+}
+
+static inline spx_int16_t FLOAT_EXTRACT16(spx_float_t a)
+{
+   if (a.e<0)
+      return (a.m+(1<<(-a.e-1)))>>-a.e;
+   else
+      return a.m<<a.e;
+}
+
+static inline spx_int32_t FLOAT_MUL32(spx_float_t a, spx_word32_t b)
+{
+   if (a.e<-15)
+      return SHR32(MULT16_32_Q15(a.m, b),-a.e-15);
+   else
+      return SHL32(MULT16_32_Q15(a.m, b),15+a.e);
+}
+
+static inline spx_float_t FLOAT_MUL32U(spx_word32_t a, spx_word32_t b)
+{
+   int e=0;
+   /* FIXME: Handle the sign */
+   if (a==0)
+      return (spx_float_t) {0,0};
+   while (a>32767)
+   {
+      a >>= 1;
+      e++;
+   }
+   while (a<16384)
+   {
+      a <<= 1;
+      e--;
+   }
+   while (b>32767)
+   {
+      b >>= 1;
+      e++;
+   }
+   while (b<16384)
+   {
+      b <<= 1;
+      e--;
+   }
+   return (spx_float_t) {MULT16_16_Q15(a,b),e+15};
+}
+
+static inline spx_float_t FLOAT_DIV32_FLOAT(spx_word32_t a, spx_float_t b)
+{
+   int e=0;
+   /* FIXME: Handle the sign */
+   if (a==0)
+      return (spx_float_t) {0,0};
+   while (a<SHL32(b.m,14))
+   {
+      a <<= 1;
+      e--;
+   }
+   while (a>=SHL32(b.m-1,15))
+   {
+      a >>= 1;
+      e++;
+   }
+   return (spx_float_t) {DIV32_16(a,b.m),e-b.e};
+}
+
+
+static inline spx_float_t FLOAT_DIV32(spx_word32_t a, spx_word32_t b)
+{
+   int e=0;
+   /* FIXME: Handle the sign */
+   if (a==0)
+      return (spx_float_t) {0,0};
+   while (b>32767)
+   {
+      b >>= 1;
+      e--;
+   }
+   while (a<SHL32(b,14))
+   {
+      a <<= 1;
+      e--;
+   }
+   while (a>=SHL32(b-1,15))
+   {
+      a >>= 1;
+      e++;
+   }
+   return (spx_float_t) {DIV32_16(a,b),e};
+}
+
+static inline spx_float_t FLOAT_DIVU(spx_float_t a, spx_float_t b)
+{
+   int e=0;
+   spx_int32_t num;
+   num = a.m;
+   while (a.m >= b.m)
+   {
+      e++;
+      a.m >>= 1;
+   }
+   num = num << (15-e);
+   return (spx_float_t) {DIV32_16(num,b.m),a.e-b.e-15+e};
+}
+
+#else
+
+#define spx_float_t float
+#define FLOAT_ZERO 0.f
+#define FLOAT_ONE 1.f
+#define FLOAT_HALF 0.5f
+#define PSEUDOFLOAT(x) (x)
+#define FLOAT_MULT(a,b) ((a)*(b))
+#define FLOAT_MUL32(a,b) ((a)*(b))
+#define FLOAT_DIV32(a,b) ((a)/(b))
+#define FLOAT_EXTRACT16(a) (a)
+#define FLOAT_ADD(a,b) ((a)+(b))
+#define FLOAT_SUB(a,b) ((a)-(b))
+#define REALFLOAT(x) (x)
+#define FLOAT_DIV32_FLOAT(a,b) ((a)/(b))
+#define FLOAT_MUL32U(a,b) ((a)*(b))
+#define FLOAT_SHL(a,b) (a)
+#define FLOAT_LT(a,b) ((a)<(b))
+#define FLOAT_GT(a,b) ((a)>(b))
+#define FLOAT_DIVU(a,b) ((a)/(b))
+
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/quant_lsp.c b/pjmedia/src/pjmedia-codec/speex/quant_lsp.c
new file mode 100644
index 00000000..7bd0b91f
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/quant_lsp.c
@@ -0,0 +1,441 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: quant_lsp.c
+   LSP vector quantization
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "quant_lsp.h"
+#include <math.h>
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+
+#include "misc.h"
+
+#ifdef FIXED_POINT
+
+#define LSP_LINEAR(i) (SHL16(i+1,11))
+#define LSP_LINEAR_HIGH(i) (ADD16(MULT16_16_16(i,2560),6144))
+#define LSP_DIV_256(x) (SHL16((spx_word16_t)x, 5))
+#define LSP_DIV_512(x) (SHL16((spx_word16_t)x, 4))
+#define LSP_DIV_1024(x) (SHL16((spx_word16_t)x, 3))
+#define LSP_PI 25736
+
+#else
+
+#define LSP_LINEAR(i) (.25*(i)+.25)
+#define LSP_LINEAR_HIGH(i) (.3125*(i)+.75)
+#define LSP_SCALE 256.
+#define LSP_DIV_256(x) (0.0039062*(x))
+#define LSP_DIV_512(x) (0.0019531*(x))
+#define LSP_DIV_1024(x) (0.00097656*(x))
+#define LSP_PI M_PI
+
+#endif
+
+static void compute_quant_weights(spx_lsp_t *qlsp, spx_word16_t *quant_weight, int order)
+{
+   int i;
+   spx_word16_t tmp1, tmp2;
+   for (i=0;i<order;i++)
+   {
+      if (i==0)
+         tmp1 = qlsp[i];
+      else
+         tmp1 = qlsp[i]-qlsp[i-1];
+      if (i==order-1)
+         tmp2 = LSP_PI-qlsp[i];
+      else
+         tmp2 = qlsp[i+1]-qlsp[i];
+      if (tmp2<tmp1)
+         tmp1 = tmp2;
+#ifdef FIXED_POINT
+      quant_weight[i] = DIV32_16(81920,ADD16(300,tmp1));
+#else
+      quant_weight[i] = 10/(.04+tmp1);
+#endif
+   }
+
+}
+
+/* Note: x is modified*/
+static int lsp_quant(spx_word16_t *x, const signed char *cdbk, int nbVec, int nbDim)
+{
+   int i,j;
+   spx_word32_t dist;
+   spx_word16_t tmp;
+   spx_word32_t best_dist=0;
+   int best_id=0;
+   const signed char *ptr=cdbk;
+   for (i=0;i<nbVec;i++)
+   {
+      dist=0;
+      for (j=0;j<nbDim;j++)
+      {
+         tmp=SUB16(x[j],SHL16((spx_word16_t)*ptr++,5));
+         dist=MAC16_16(dist,tmp,tmp);
+      }
+      if (dist<best_dist || i==0)
+      {
+         best_dist=dist;
+         best_id=i;
+      }
+   }
+
+   for (j=0;j<nbDim;j++)
+      x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5));
+    
+   return best_id;
+}
+
+/* Note: x is modified*/
+static int lsp_weight_quant(spx_word16_t *x, spx_word16_t *weight, const signed char *cdbk, int nbVec, int nbDim)
+{
+   int i,j;
+   spx_word32_t dist;
+   spx_word16_t tmp;
+   spx_word32_t best_dist=0;
+   int best_id=0;
+   const signed char *ptr=cdbk;
+   for (i=0;i<nbVec;i++)
+   {
+      dist=0;
+      for (j=0;j<nbDim;j++)
+      {
+         tmp=SUB16(x[j],SHL16((spx_word16_t)*ptr++,5));
+         dist=MAC16_32_Q15(dist,weight[j],MULT16_16(tmp,tmp));
+      }
+      if (dist<best_dist || i==0)
+      {
+         best_dist=dist;
+         best_id=i;
+      }
+   }
+   
+   for (j=0;j<nbDim;j++)
+      x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5));
+   return best_id;
+}
+
+
+void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
+{
+   int i;
+   int id;
+   spx_word16_t quant_weight[10];
+   
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i];
+
+   compute_quant_weights(qlsp, quant_weight, order);
+
+   for (i=0;i<order;i++)
+      qlsp[i]=SUB16(qlsp[i],LSP_LINEAR(i));
+
+#ifndef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i] = LSP_SCALE*qlsp[i];
+#endif
+   id = lsp_quant(qlsp, cdbk_nb, NB_CDBK_SIZE, order);
+   speex_bits_pack(bits, id, 6);
+
+   for (i=0;i<order;i++)
+      qlsp[i]*=2;
+ 
+   id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low1, NB_CDBK_SIZE_LOW1, 5);
+   speex_bits_pack(bits, id, 6);
+
+   for (i=0;i<5;i++)
+      qlsp[i]*=2;
+
+   id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low2, NB_CDBK_SIZE_LOW2, 5);
+   speex_bits_pack(bits, id, 6);
+
+   id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high1, NB_CDBK_SIZE_HIGH1, 5);
+   speex_bits_pack(bits, id, 6);
+
+   for (i=5;i<10;i++)
+      qlsp[i]*=2;
+
+   id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high2, NB_CDBK_SIZE_HIGH2, 5);
+   speex_bits_pack(bits, id, 6);
+
+#ifdef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i]=PSHR16(qlsp[i],2);
+#else
+   for (i=0;i<order;i++)
+      qlsp[i]=qlsp[i] * .00097656;
+#endif
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i]-qlsp[i];
+}
+
+void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits)
+{
+   int i, id;
+   for (i=0;i<order;i++)
+      lsp[i]=LSP_LINEAR(i);
+
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<10;i++)
+      lsp[i] = ADD32(lsp[i], LSP_DIV_256(cdbk_nb[id*10+i]));
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i] = ADD16(lsp[i], LSP_DIV_512(cdbk_nb_low1[id*5+i]));
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i] = ADD32(lsp[i], LSP_DIV_1024(cdbk_nb_low2[id*5+i]));
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i+5] = ADD32(lsp[i+5], LSP_DIV_512(cdbk_nb_high1[id*5+i]));
+   
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i+5] = ADD32(lsp[i+5], LSP_DIV_1024(cdbk_nb_high2[id*5+i]));
+}
+
+
+void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
+{
+   int i;
+   int id;
+   spx_word16_t quant_weight[10];
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i];
+
+   compute_quant_weights(qlsp, quant_weight, order);
+
+   for (i=0;i<order;i++)
+      qlsp[i]=SUB16(qlsp[i],LSP_LINEAR(i));
+#ifndef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i]=qlsp[i]*LSP_SCALE;
+#endif
+   id = lsp_quant(qlsp, cdbk_nb, NB_CDBK_SIZE, order);
+   speex_bits_pack(bits, id, 6);
+   
+   for (i=0;i<order;i++)
+      qlsp[i]*=2;
+   
+   id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low1, NB_CDBK_SIZE_LOW1, 5);
+   speex_bits_pack(bits, id, 6);
+
+   id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high1, NB_CDBK_SIZE_HIGH1, 5);
+   speex_bits_pack(bits, id, 6);
+
+#ifdef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i] = PSHR16(qlsp[i],1);
+#else
+   for (i=0;i<order;i++)
+      qlsp[i] = qlsp[i]*0.0019531;
+#endif
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i]-qlsp[i];
+}
+
+void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits)
+{
+   int i, id;
+   for (i=0;i<order;i++)
+      lsp[i]=LSP_LINEAR(i);
+
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<10;i++)
+      lsp[i] += LSP_DIV_256(cdbk_nb[id*10+i]);
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i] += LSP_DIV_512(cdbk_nb_low1[id*5+i]);
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<5;i++)
+      lsp[i+5] += LSP_DIV_512(cdbk_nb_high1[id*5+i]);
+   
+}
+
+
+#ifdef DISABLE_WIDEBAND
+void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+}
+void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+}
+#else
+extern const signed char high_lsp_cdbk[];
+extern const signed char high_lsp_cdbk2[];
+
+
+void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
+{
+   int i;
+   int id;
+   spx_word16_t quant_weight[10];
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i];
+
+   compute_quant_weights(qlsp, quant_weight, order);
+
+   /*   quant_weight[0] = 10/(qlsp[1]-qlsp[0]);
+   quant_weight[order-1] = 10/(qlsp[order-1]-qlsp[order-2]);
+   for (i=1;i<order-1;i++)
+   {
+      tmp1 = 10/(qlsp[i]-qlsp[i-1]);
+      tmp2 = 10/(qlsp[i+1]-qlsp[i]);
+      quant_weight[i] = tmp1 > tmp2 ? tmp1 : tmp2;
+      }*/
+
+   for (i=0;i<order;i++)
+      qlsp[i]=SUB16(qlsp[i],LSP_LINEAR_HIGH(i));
+#ifndef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i] = qlsp[i]*LSP_SCALE;
+#endif
+   id = lsp_quant(qlsp, high_lsp_cdbk, 64, order);
+   speex_bits_pack(bits, id, 6);
+
+   for (i=0;i<order;i++)
+      qlsp[i]*=2;
+
+   id = lsp_weight_quant(qlsp, quant_weight, high_lsp_cdbk2, 64, order);
+   speex_bits_pack(bits, id, 6);
+
+#ifdef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i] = PSHR16(qlsp[i],1);
+#else
+   for (i=0;i<order;i++)
+      qlsp[i] = qlsp[i]*0.0019531;
+#endif
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i]-qlsp[i];
+}
+
+void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
+{
+
+   int i, id;
+   for (i=0;i<order;i++)
+      lsp[i]=LSP_LINEAR_HIGH(i);
+
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<order;i++)
+      lsp[i] += LSP_DIV_256(high_lsp_cdbk[id*order+i]);
+
+
+   id=speex_bits_unpack_unsigned(bits, 6);
+   for (i=0;i<order;i++)
+      lsp[i] += LSP_DIV_512(high_lsp_cdbk2[id*order+i]);
+}
+
+#endif
+
+
+#ifdef EPIC_48K
+
+extern const signed char cdbk_lsp_vlbr[5120];
+extern const signed char cdbk_lsp2_vlbr[160];
+
+void lsp_quant_48k(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
+{
+   int i;
+   int id;
+   spx_word16_t quant_weight[10];
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i];
+
+   compute_quant_weights(qlsp, quant_weight, order);
+
+   for (i=0;i<order;i++)
+      qlsp[i]=SUB16(qlsp[i],LSP_SCALING*(.25*i+.3125));
+#ifndef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i] = qlsp[i]*LSP_SCALE;
+#endif
+   
+   id = lsp_quant(qlsp, cdbk_lsp_vlbr, 512, order);
+   speex_bits_pack(bits, id, 9);
+
+   for (i=0;i<order;i++)
+      qlsp[i]*=4;
+   
+   id = lsp_weight_quant(qlsp, quant_weight, cdbk_lsp2_vlbr, 16, 10);
+   speex_bits_pack(bits, id, 4);
+
+#ifdef FIXED_POINT
+   for (i=0;i<order;i++)
+      qlsp[i]=PSHR(qlsp[i],2);
+#else
+   for (i=0;i<order;i++)
+      qlsp[i]=qlsp[i]*0.00097655;
+#endif
+
+   for (i=0;i<order;i++)
+      qlsp[i]=lsp[i]-qlsp[i];
+}
+
+void lsp_unquant_48k(spx_lsp_t *lsp, int order, SpeexBits *bits)
+{
+   int i, id;
+   for (i=0;i<order;i++)
+      lsp[i]=LSP_SCALING*(.25*i+.3125);
+
+
+   id=speex_bits_unpack_unsigned(bits, 9);
+   for (i=0;i<10;i++)
+      lsp[i] += LSP_SCALING*0.0039062*cdbk_lsp_vlbr[id*10+i];
+
+   id=speex_bits_unpack_unsigned(bits, 4);
+   for (i=0;i<10;i++)
+      lsp[i] += LSP_SCALING*0.00097655*cdbk_lsp2_vlbr[id*10+i];
+   
+}
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/quant_lsp.h b/pjmedia/src/pjmedia-codec/speex/quant_lsp.h
new file mode 100644
index 00000000..c6d5bb36
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/quant_lsp.h
@@ -0,0 +1,83 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file quant_lsp.h
+   @brief LSP vector quantization
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef QUANT_LSP_H
+#define QUANT_LSP_H
+
+#include <speex/speex_bits.h>
+#include "misc.h"
+
+#define MAX_LSP_SIZE 20
+
+#define NB_CDBK_SIZE 64
+#define NB_CDBK_SIZE_LOW1 64
+#define NB_CDBK_SIZE_LOW2 64
+#define NB_CDBK_SIZE_HIGH1 64
+#define NB_CDBK_SIZE_HIGH2 64
+
+/*Narrowband codebooks*/
+extern const signed char cdbk_nb[];
+extern const signed char cdbk_nb_low1[];
+extern const signed char cdbk_nb_low2[];
+extern const signed char cdbk_nb_high1[];
+extern const signed char cdbk_nb_high2[];
+
+/* Quantizes narrowband LSPs with 30 bits */
+void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
+
+/* Decodes quantized narrowband LSPs */
+void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits);
+
+/* Quantizes low bit-rate narrowband LSPs with 18 bits */
+void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
+
+/* Decodes quantized low bit-rate narrowband LSPs */
+void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits);
+
+/* Quantizes high-band LSPs with 12 bits */
+void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
+
+/* Decodes high-band LSPs */
+void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits);
+
+#ifdef EPIC_48K
+/* Quantizes narrowband LSPs with 14 bits */
+void lsp_quant_48k(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
+
+/* Decodes quantized narrowband LSPs (14 bits) */
+void lsp_unquant_48k(spx_lsp_t *lsp, int order, SpeexBits *bits);
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/sb_celp.c b/pjmedia/src/pjmedia-codec/speex/sb_celp.c
new file mode 100644
index 00000000..5adf44df
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/sb_celp.c
@@ -0,0 +1,1613 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: sb_celp.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "sb_celp.h"
+#include "stdlib.h"
+#include "filters.h"
+#include "lpc.h"
+#include "lsp.h"
+#include "stack_alloc.h"
+#include "cb_search.h"
+#include "quant_lsp.h"
+#include "vq.h"
+#include "ltp.h"
+#include "misc.h"
+
+/* Default size for the encoder and decoder stack (can be changed at compile time).
+   This does not apply when using variable-size arrays or alloca. */
+#ifndef SB_ENC_STACK
+#define SB_ENC_STACK (10000*sizeof(spx_sig_t))
+#endif
+
+#ifndef SB_DEC_STACK
+#define SB_DEC_STACK (6000*sizeof(spx_sig_t))
+#endif
+
+
+#ifdef DISABLE_WIDEBAND
+void *sb_encoder_init(const SpeexMode *m)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return NULL;
+}
+void sb_encoder_destroy(void *state)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+}
+int sb_encode(void *state, void *vin, SpeexBits *bits)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return -2;
+}
+void *sb_decoder_init(const SpeexMode *m)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return NULL;
+}
+void sb_decoder_destroy(void *state)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+}
+int sb_decode(void *state, SpeexBits *bits, void *vout)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return -2;
+}
+int sb_encoder_ctl(void *state, int request, void *ptr)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return -2;
+}
+int sb_decoder_ctl(void *state, int request, void *ptr)
+{
+   speex_error("Wideband and Ultra-wideband are disabled");
+   return -2;
+}
+#else
+
+
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+
+#define sqr(x) ((x)*(x))
+
+#define SUBMODE(x) st->submodes[st->submodeID]->x
+
+#ifdef FIXED_POINT
+static const spx_word16_t gc_quant_bound[16] = {125, 164, 215, 282, 370, 484, 635, 832, 1090, 1428, 1871, 2452, 3213, 4210, 5516, 7228};
+#define LSP_MARGIN 410
+#define LSP_DELTA1 6553
+#define LSP_DELTA2 1638
+
+#else
+
+#define LSP_MARGIN .05
+#define LSP_DELTA1 .2
+#define LSP_DELTA2 .05
+
+#endif
+
+#define QMF_ORDER 64
+
+#ifdef FIXED_POINT
+static const spx_word16_t h0[64] = {2, -7, -7, 18, 15, -39, -25, 75, 35, -130, -41, 212, 38, -327, -17, 483, -32, -689, 124, 956, -283, -1307, 543, 1780, -973, -2467, 1733, 3633, -3339, -6409, 9059, 30153, 30153, 9059, -6409, -3339, 3633, 1733, -2467, -973, 1780, 543, -1307, -283, 956, 124, -689, -32, 483, -17, -327, 38, 212, -41, -130, 35, 75, -25, -39, 15, 18, -7, -7, 2};
+
+static const spx_word16_t h1[64] = {2, 7, -7, -18, 15, 39, -25, -75, 35, 130, -41, -212, 38, 327, -17, -483, -32, 689, 124, -956, -283, 1307, 543, -1780, -973, 2467, 1733, -3633, -3339, 6409, 9059, -30153, 30153, -9059, -6409, 3339, 3633, -1733, -2467, 973, 1780, -543, -1307, 283, 956, -124, -689, 32, 483, 17, -327, -38, 212, 41, -130, -35, 75, 25, -39, -15, 18, 7, -7, -2};
+
+
+#else
+static const float h0[64] = {
+   3.596189e-05, -0.0001123515,
+   -0.0001104587, 0.0002790277,
+   0.0002298438, -0.0005953563,
+   -0.0003823631, 0.00113826,
+   0.0005308539, -0.001986177,
+   -0.0006243724, 0.003235877,
+   0.0005743159, -0.004989147,
+   -0.0002584767, 0.007367171,
+   -0.0004857935, -0.01050689,
+   0.001894714, 0.01459396,
+   -0.004313674, -0.01994365,
+   0.00828756, 0.02716055,
+   -0.01485397, -0.03764973,
+   0.026447, 0.05543245,
+   -0.05095487, -0.09779096,
+   0.1382363, 0.4600981,
+   0.4600981, 0.1382363,
+   -0.09779096, -0.05095487,
+   0.05543245, 0.026447,
+   -0.03764973, -0.01485397,
+   0.02716055, 0.00828756,
+   -0.01994365, -0.004313674,
+   0.01459396, 0.001894714,
+   -0.01050689, -0.0004857935,
+   0.007367171, -0.0002584767,
+   -0.004989147, 0.0005743159,
+   0.003235877, -0.0006243724,
+   -0.001986177, 0.0005308539,
+   0.00113826, -0.0003823631,
+   -0.0005953563, 0.0002298438,
+   0.0002790277, -0.0001104587,
+   -0.0001123515, 3.596189e-05
+};
+
+static const float h1[64] = {
+   3.596189e-05, 0.0001123515,
+   -0.0001104587, -0.0002790277,
+   0.0002298438, 0.0005953563,
+   -0.0003823631, -0.00113826,
+   0.0005308539, 0.001986177,
+   -0.0006243724, -0.003235877,
+   0.0005743159, 0.004989147,
+   -0.0002584767, -0.007367171,
+   -0.0004857935, 0.01050689,
+   0.001894714, -0.01459396,
+   -0.004313674, 0.01994365,
+   0.00828756, -0.02716055,
+   -0.01485397, 0.03764973,
+   0.026447, -0.05543245,
+   -0.05095487, 0.09779096,
+   0.1382363, -0.4600981,
+   0.4600981, -0.1382363,
+   -0.09779096, 0.05095487,
+   0.05543245, -0.026447,
+   -0.03764973, 0.01485397,
+   0.02716055, -0.00828756,
+   -0.01994365, 0.004313674,
+   0.01459396, -0.001894714,
+   -0.01050689, 0.0004857935,
+   0.007367171, 0.0002584767,
+   -0.004989147, -0.0005743159,
+   0.003235877, 0.0006243724,
+   -0.001986177, -0.0005308539,
+   0.00113826, 0.0003823631,
+   -0.0005953563, -0.0002298438,
+   0.0002790277, 0.0001104587,
+   -0.0001123515, -3.596189e-05
+};
+#endif
+
+static void mix_and_saturate(spx_word32_t *x0, spx_word32_t *x1, spx_word16_t *out, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+   {
+      spx_word32_t tmp;
+#ifdef FIXED_POINT
+      tmp=PSHR(x0[i]-x1[i],SIG_SHIFT-1);
+#else
+      tmp=2*(x0[i]-x1[i]);
+#endif
+      if (tmp>32767)
+         out[i] = 32767;
+      else if (tmp<-32767)
+         out[i] = -32767;
+      else
+         out[i] = tmp;
+   }
+}
+
+void *sb_encoder_init(const SpeexMode *m)
+{
+   int i;
+   SBEncState *st;
+   const SpeexSBMode *mode;
+
+   st = (SBEncState*)speex_alloc(sizeof(SBEncState));
+   if (!st)
+      return NULL;
+#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
+   st->stack = NULL;
+#else
+   st->stack = (char*)speex_alloc_scratch(SB_ENC_STACK);
+#endif
+   st->mode = m;
+   mode = (const SpeexSBMode*)m->mode;
+
+
+   st->st_low = speex_encoder_init(mode->nb_mode);
+   st->full_frame_size = 2*mode->frameSize;
+   st->frame_size = mode->frameSize;
+   st->subframeSize = mode->subframeSize;
+   st->nbSubframes = mode->frameSize/mode->subframeSize;
+   st->windowSize = st->frame_size*3/2;
+   st->lpcSize=mode->lpcSize;
+   st->bufSize=mode->bufSize;
+
+   st->encode_submode = 1;
+   st->submodes=mode->submodes;
+   st->submodeSelect = st->submodeID=mode->defaultSubmode;
+   
+   i=9;
+   speex_encoder_ctl(st->st_low, SPEEX_SET_QUALITY, &i);
+
+   st->lag_factor = mode->lag_factor;
+   st->lpc_floor = mode->lpc_floor;
+   st->gamma1=mode->gamma1;
+   st->gamma2=mode->gamma2;
+   st->first=1;
+
+   st->x0d=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->x1d=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->high=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+   st->y0=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+   st->y1=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+
+   st->h0_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word16_t));
+   st->h1_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word16_t));
+   st->g0_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word32_t));
+   st->g1_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word32_t));
+
+   st->excBuf=speex_alloc((st->bufSize)*sizeof(spx_sig_t));
+   st->exc = st->excBuf + st->bufSize - st->windowSize;
+
+   st->res=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->sw=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->target=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   /*Asymmetric "pseudo-Hamming" window*/
+   {
+      int part1, part2;
+      part1 = st->subframeSize*7/2;
+      part2 = st->subframeSize*5/2;
+      st->window = speex_alloc((st->windowSize)*sizeof(spx_word16_t));
+      for (i=0;i<part1;i++)
+         st->window[i]=(spx_word16_t)(SIG_SCALING*(.54-.46*cos(M_PI*i/part1)));
+      for (i=0;i<part2;i++)
+         st->window[part1+i]=(spx_word16_t)(SIG_SCALING*(.54+.46*cos(M_PI*i/part2)));
+   }
+
+   st->lagWindow = speex_alloc((st->lpcSize+1)*sizeof(spx_word16_t));
+   for (i=0;i<st->lpcSize+1;i++)
+      st->lagWindow[i]=16384*exp(-.5*sqr(2*M_PI*st->lag_factor*i));
+
+   st->autocorr = speex_alloc((st->lpcSize+1)*sizeof(spx_word16_t));
+   st->lpc = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->bw_lpc1 = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->bw_lpc2 = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->lsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->old_lsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->old_qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->interp_lsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->interp_qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->interp_lpc = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->interp_qlpc = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+   st->pi_gain = speex_alloc((st->nbSubframes)*sizeof(spx_word32_t));
+
+   st->mem_sp = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+   st->mem_sp2 = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+   st->mem_sw = speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
+
+   st->vbr_quality = 8;
+   st->vbr_enabled = 0;
+   st->vad_enabled = 0;
+   st->abr_enabled = 0;
+   st->relative_quality=0;
+
+   st->complexity=2;
+   speex_encoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate);
+   st->sampling_rate*=2;
+#ifdef ENABLE_VALGRIND
+   VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#endif
+   return st;
+}
+
+void sb_encoder_destroy(void *state)
+{
+   SBEncState *st=(SBEncState*)state;
+
+   speex_encoder_destroy(st->st_low);
+#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
+   speex_free_scratch(st->stack);
+#endif
+
+   speex_free(st->x0d);
+   speex_free(st->x1d);
+   speex_free(st->high);
+   speex_free(st->y0);
+   speex_free(st->y1);
+
+   speex_free(st->h0_mem);
+   speex_free(st->h1_mem);
+   speex_free(st->g0_mem);
+   speex_free(st->g1_mem);
+
+   speex_free(st->excBuf);
+   speex_free(st->res);
+   speex_free(st->sw);
+   speex_free(st->target);
+   speex_free(st->window);
+   speex_free(st->lagWindow);
+
+   speex_free(st->autocorr);
+   speex_free(st->lpc);
+   speex_free(st->bw_lpc1);
+   speex_free(st->bw_lpc2);
+   speex_free(st->lsp);
+   speex_free(st->qlsp);
+   speex_free(st->old_lsp);
+   speex_free(st->old_qlsp);
+   speex_free(st->interp_lsp);
+   speex_free(st->interp_qlsp);
+   speex_free(st->interp_lpc);
+   speex_free(st->interp_qlpc);
+   speex_free(st->pi_gain);
+
+   speex_free(st->mem_sp);
+   speex_free(st->mem_sp2);
+   speex_free(st->mem_sw);
+
+   
+   speex_free(st);
+}
+
+
+int sb_encode(void *state, void *vin, SpeexBits *bits)
+{
+   SBEncState *st;
+   int i, roots, sub;
+   char *stack;
+   VARDECL(spx_mem_t *mem);
+   VARDECL(spx_sig_t *innov);
+   VARDECL(spx_word16_t *syn_resp);
+   VARDECL(spx_word32_t *low_pi_gain);
+   VARDECL(spx_sig_t *low_exc);
+   VARDECL(spx_sig_t *low_innov);
+   const SpeexSBMode *mode;
+   int dtx;
+   spx_word16_t *in = vin;
+
+   st = (SBEncState*)state;
+   stack=st->stack;
+   mode = (const SpeexSBMode*)(st->mode->mode);
+
+   {
+      VARDECL(spx_word16_t *low);
+      ALLOC(low, st->frame_size, spx_word16_t);
+
+      /* Compute the two sub-bands by filtering with h0 and h1*/
+      qmf_decomp(in, h0, st->x0d, st->x1d, st->full_frame_size, QMF_ORDER, st->h0_mem, stack);
+      
+      for (i=0;i<st->frame_size;i++)
+         low[i] = SATURATE(PSHR(st->x0d[i],SIG_SHIFT),32767);
+      
+      /* Encode the narrowband part*/
+      speex_encode_native(st->st_low, low, bits);
+
+      for (i=0;i<st->frame_size;i++)
+         st->x0d[i] = SHL(low[i],SIG_SHIFT);
+   }
+   /* High-band buffering / sync with low band */
+   for (i=0;i<st->windowSize-st->frame_size;i++)
+      st->high[i] = st->high[st->frame_size+i];
+   for (i=0;i<st->frame_size;i++)
+      st->high[st->windowSize-st->frame_size+i]=SATURATE(st->x1d[i],536854528);
+
+   speex_move(st->excBuf, st->excBuf+st->frame_size, (st->bufSize-st->frame_size)*sizeof(spx_sig_t));
+
+
+   ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t);
+   ALLOC(low_exc, st->frame_size, spx_sig_t);
+   ALLOC(low_innov, st->frame_size, spx_sig_t);
+   speex_encoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain);
+   speex_encoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc);
+   speex_encoder_ctl(st->st_low, SPEEX_GET_INNOV, low_innov);
+   
+   speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, &dtx);
+
+   if (dtx==0)
+      dtx=1;
+   else
+      dtx=0;
+
+   {
+      VARDECL(spx_word16_t *w_sig);
+      ALLOC(w_sig, st->windowSize, spx_word16_t);
+      /* Window for analysis */
+      for (i=0;i<st->windowSize;i++)
+         w_sig[i] = SHR(MULT16_16(SHR((spx_word32_t)(st->high[i]),SIG_SHIFT),st->window[i]),SIG_SHIFT);
+
+      /* Compute auto-correlation */
+      _spx_autocorr(w_sig, st->autocorr, st->lpcSize+1, st->windowSize);
+   }
+   st->autocorr[0] = ADD16(st->autocorr[0],MULT16_16_Q15(st->autocorr[0],st->lpc_floor)); /* Noise floor in auto-correlation domain */
+
+   /* Lag windowing: equivalent to filtering in the power-spectrum domain */
+   for (i=0;i<st->lpcSize+1;i++)
+      st->autocorr[i] = MULT16_16_Q14(st->autocorr[i],st->lagWindow[i]);
+
+   /* Levinson-Durbin */
+   _spx_lpc(st->lpc, st->autocorr, st->lpcSize);
+
+   /* LPC to LSPs (x-domain) transform */
+   roots=lpc_to_lsp (st->lpc, st->lpcSize, st->lsp, 15, LSP_DELTA1, stack);
+   if (roots!=st->lpcSize)
+   {
+      roots = lpc_to_lsp (st->lpc, st->lpcSize, st->lsp, 11, LSP_DELTA2, stack);
+      if (roots!=st->lpcSize) {
+         /*If we can't find all LSP's, do some damage control and use a flat filter*/
+         for (i=0;i<st->lpcSize;i++)
+         {
+            st->lsp[i]=M_PI*((float)(i+1))/(st->lpcSize+1);
+         }
+      }
+   }
+
+   /* VBR code */
+   if ((st->vbr_enabled || st->vad_enabled) && !dtx)
+   {
+      float e_low=0, e_high=0;
+      float ratio;
+      if (st->abr_enabled)
+      {
+         float qual_change=0;
+         if (st->abr_drift2 * st->abr_drift > 0)
+         {
+            /* Only adapt if long-term and short-term drift are the same sign */
+            qual_change = -.00001*st->abr_drift/(1+st->abr_count);
+            if (qual_change>.1)
+               qual_change=.1;
+            if (qual_change<-.1)
+               qual_change=-.1;
+         }
+         st->vbr_quality += qual_change;
+         if (st->vbr_quality>10)
+            st->vbr_quality=10;
+         if (st->vbr_quality<0)
+            st->vbr_quality=0;
+      }
+
+
+      /*FIXME: Are the two signals (low, high) in sync? */
+      e_low = compute_rms(st->x0d, st->frame_size);
+      e_high = compute_rms(st->high, st->frame_size);
+      ratio = 2*log((1+e_high)/(1+e_low));
+      
+      speex_encoder_ctl(st->st_low, SPEEX_GET_RELATIVE_QUALITY, &st->relative_quality);
+      if (ratio<-4)
+         ratio=-4;
+      if (ratio>2)
+         ratio=2;
+      /*if (ratio>-2)*/
+      if (st->vbr_enabled) 
+      {
+         int modeid;
+         modeid = mode->nb_modes-1;
+         st->relative_quality+=1.0*(ratio+2);
+	 if (st->relative_quality<-1)
+            st->relative_quality=-1;
+         while (modeid)
+         {
+            int v1;
+            float thresh;
+            v1=(int)floor(st->vbr_quality);
+            if (v1==10)
+               thresh = mode->vbr_thresh[modeid][v1];
+            else
+               thresh = (st->vbr_quality-v1)   * mode->vbr_thresh[modeid][v1+1] + 
+                        (1+v1-st->vbr_quality) * mode->vbr_thresh[modeid][v1];
+            if (st->relative_quality >= thresh)
+               break;
+            modeid--;
+         }
+         speex_encoder_ctl(state, SPEEX_SET_HIGH_MODE, &modeid);
+         if (st->abr_enabled)
+         {
+            int bitrate;
+            speex_encoder_ctl(state, SPEEX_GET_BITRATE, &bitrate);
+            st->abr_drift+=(bitrate-st->abr_enabled);
+            st->abr_drift2 = .95*st->abr_drift2 + .05*(bitrate-st->abr_enabled);
+            st->abr_count += 1.0;
+         }
+
+      } else {
+         /* VAD only */
+         int modeid;
+         if (st->relative_quality<2.0)
+            modeid=1;
+         else
+            modeid=st->submodeSelect;
+         /*speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);*/
+         st->submodeID=modeid;
+
+      }
+      /*fprintf (stderr, "%f %f\n", ratio, low_qual);*/
+   }
+
+   if (st->encode_submode)
+   {
+      speex_bits_pack(bits, 1, 1);
+      if (dtx)
+         speex_bits_pack(bits, 0, SB_SUBMODE_BITS);
+      else
+         speex_bits_pack(bits, st->submodeID, SB_SUBMODE_BITS);
+   }
+
+   /* If null mode (no transmission), just set a couple things to zero*/
+   if (dtx || st->submodes[st->submodeID] == NULL)
+   {
+      for (i=0;i<st->frame_size;i++)
+         st->exc[i]=st->sw[i]=VERY_SMALL;
+
+      for (i=0;i<st->lpcSize;i++)
+         st->mem_sw[i]=0;
+      st->first=1;
+
+      /* Final signal synthesis from excitation */
+      iir_mem2(st->exc, st->interp_qlpc, st->high, st->frame_size, st->lpcSize, st->mem_sp);
+
+#ifdef RESYNTH
+      /* Reconstruct the original */
+      fir_mem_up(st->x0d, h0, st->y0, st->full_frame_size, QMF_ORDER, st->g0_mem, stack);
+      fir_mem_up(st->high, h1, st->y1, st->full_frame_size, QMF_ORDER, st->g1_mem, stack);
+
+      for (i=0;i<st->full_frame_size;i++)
+         in[i]=SHR(st->y0[i]-st->y1[i], SIG_SHIFT-1);
+#endif
+
+      if (dtx)
+         return 0;
+      else
+         return 1;
+   }
+
+
+   /* LSP quantization */
+   SUBMODE(lsp_quant)(st->lsp, st->qlsp, st->lpcSize, bits);   
+
+   if (st->first)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_lsp[i] = st->lsp[i];
+      for (i=0;i<st->lpcSize;i++)
+         st->old_qlsp[i] = st->qlsp[i];
+   }
+   
+   ALLOC(mem, st->lpcSize, spx_mem_t);
+   ALLOC(syn_resp, st->subframeSize, spx_word16_t);
+   ALLOC(innov, st->subframeSize, spx_sig_t);
+
+   for (sub=0;sub<st->nbSubframes;sub++)
+   {
+      spx_sig_t *exc, *sp, *res, *target, *sw;
+      spx_word16_t filter_ratio;
+      int offset;
+      spx_word32_t rl, rh;
+      spx_word16_t eh=0;
+
+      offset = st->subframeSize*sub;
+      sp=st->high+offset;
+      exc=st->exc+offset;
+      res=st->res+offset;
+      target=st->target+offset;
+      sw=st->sw+offset;
+      
+      /* LSP interpolation (quantized and unquantized) */
+      lsp_interpolate(st->old_lsp, st->lsp, st->interp_lsp, st->lpcSize, sub, st->nbSubframes);
+      lsp_interpolate(st->old_qlsp, st->qlsp, st->interp_qlsp, st->lpcSize, sub, st->nbSubframes);
+
+      lsp_enforce_margin(st->interp_lsp, st->lpcSize, LSP_MARGIN);
+      lsp_enforce_margin(st->interp_qlsp, st->lpcSize, LSP_MARGIN);
+
+      lsp_to_lpc(st->interp_lsp, st->interp_lpc, st->lpcSize,stack);
+      lsp_to_lpc(st->interp_qlsp, st->interp_qlpc, st->lpcSize, stack);
+
+      bw_lpc(st->gamma1, st->interp_lpc, st->bw_lpc1, st->lpcSize);
+      bw_lpc(st->gamma2, st->interp_lpc, st->bw_lpc2, st->lpcSize);
+
+      /* Compute mid-band (4000 Hz for wideband) response of low-band and high-band
+         filters */
+      st->pi_gain[sub]=LPC_SCALING;
+      rh = LPC_SCALING;
+      for (i=0;i<st->lpcSize;i+=2)
+      {
+         rh += st->interp_qlpc[i+1] - st->interp_qlpc[i];
+         st->pi_gain[sub] += st->interp_qlpc[i] + st->interp_qlpc[i+1];
+      }
+      
+      rl = low_pi_gain[sub];
+#ifdef FIXED_POINT
+      filter_ratio=DIV32_16(SHL(rl+82,2),SHR(82+rh,5));
+#else
+      filter_ratio=(rl+.01)/(rh+.01);
+#endif
+      
+      /* Compute "real excitation" */
+      fir_mem2(sp, st->interp_qlpc, exc, st->subframeSize, st->lpcSize, st->mem_sp2);
+      /* Compute energy of low-band and high-band excitation */
+
+      eh = compute_rms(exc, st->subframeSize);
+
+      if (!SUBMODE(innovation_quant)) {/* 1 for spectral folding excitation, 0 for stochastic */
+         float g;
+         spx_word16_t el;
+         el = compute_rms(low_innov+offset, st->subframeSize);
+
+         /* Gain to use if we want to use the low-band excitation for high-band */
+         g=eh/(.01+el);
+         
+#if 0
+         {
+            char *tmp_stack=stack;
+            float *tmp_sig;
+            float g2;
+            ALLOC(tmp_sig, st->subframeSize, spx_sig_t);
+            for (i=0;i<st->lpcSize;i++)
+               mem[i]=st->mem_sp[i];
+            iir_mem2(low_innov+offset, st->interp_qlpc, tmp_sig, st->subframeSize, st->lpcSize, mem);
+            g2 = compute_rms(sp, st->subframeSize)/(.01+compute_rms(tmp_sig, st->subframeSize));
+            /*fprintf (stderr, "gains: %f %f\n", g, g2);*/
+            g = g2;
+            stack = tmp_stack;
+         }
+#endif
+
+#ifdef FIXED_POINT
+         g *= filter_ratio/128.;
+#else
+         g *= filter_ratio;
+#endif
+         /*print_vec(&g, 1, "gain factor");*/
+         /* Gain quantization */
+         {
+            int quant = (int) floor(.5 + 10 + 8.0 * log((g+.0001)));
+            /*speex_warning_int("tata", quant);*/
+            if (quant<0)
+               quant=0;
+            if (quant>31)
+               quant=31;
+            speex_bits_pack(bits, quant, 5);
+         }
+
+      } else {
+         spx_word16_t gc;
+         spx_word32_t scale;
+         spx_word16_t el;
+         el = compute_rms(low_exc+offset, st->subframeSize);
+
+         gc = DIV32_16(MULT16_16(filter_ratio,1+eh),1+el);
+
+         /* This is a kludge that cleans up a historical bug */
+         if (st->subframeSize==80)
+            gc *= 0.70711;
+         /*printf ("%f %f %f %f\n", el, eh, filter_ratio, gc);*/
+#ifdef FIXED_POINT
+         {
+            int qgc = scal_quant(gc, gc_quant_bound, 16);
+            speex_bits_pack(bits, qgc, 4);
+            gc = MULT16_32_Q15(28626,gc_quant_bound[qgc]);
+         }
+#else
+         {
+            int qgc = (int)floor(.5+3.7*(log(gc)+0.15556));
+            if (qgc<0)
+               qgc=0;
+            if (qgc>15)
+               qgc=15;
+            speex_bits_pack(bits, qgc, 4);
+            gc = exp((1/3.7)*qgc-0.15556);
+         }         
+#endif
+         if (st->subframeSize==80)
+            gc *= 1.4142;
+
+         scale = SHL(MULT16_16(DIV32_16(SHL(gc,SIG_SHIFT-4),filter_ratio),(1+el)),4);
+
+         compute_impulse_response(st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, syn_resp, st->subframeSize, st->lpcSize, stack);
+
+         
+         /* Reset excitation */
+         for (i=0;i<st->subframeSize;i++)
+            exc[i]=VERY_SMALL;
+         
+         /* Compute zero response (ringing) of A(z/g1) / ( A(z/g2) * Aq(z) ) */
+         for (i=0;i<st->lpcSize;i++)
+            mem[i]=st->mem_sp[i];
+         iir_mem2(exc, st->interp_qlpc, exc, st->subframeSize, st->lpcSize, mem);
+
+         for (i=0;i<st->lpcSize;i++)
+            mem[i]=st->mem_sw[i];
+         filter_mem2(exc, st->bw_lpc1, st->bw_lpc2, res, st->subframeSize, st->lpcSize, mem);
+
+         /* Compute weighted signal */
+         for (i=0;i<st->lpcSize;i++)
+            mem[i]=st->mem_sw[i];
+         filter_mem2(sp, st->bw_lpc1, st->bw_lpc2, sw, st->subframeSize, st->lpcSize, mem);
+
+         /* Compute target signal */
+         for (i=0;i<st->subframeSize;i++)
+            target[i]=sw[i]-res[i];
+
+         for (i=0;i<st->subframeSize;i++)
+           exc[i]=0;
+
+         signal_div(target, target, scale, st->subframeSize);
+
+         /* Reset excitation */
+         for (i=0;i<st->subframeSize;i++)
+            innov[i]=0;
+
+         /*print_vec(target, st->subframeSize, "\ntarget");*/
+         SUBMODE(innovation_quant)(target, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, 
+                                   SUBMODE(innovation_params), st->lpcSize, st->subframeSize, 
+                                   innov, syn_resp, bits, stack, (st->complexity+1)>>1, SUBMODE(double_codebook));
+         /*print_vec(target, st->subframeSize, "after");*/
+
+         signal_mul(innov, innov, scale, st->subframeSize);
+
+         for (i=0;i<st->subframeSize;i++)
+            exc[i] = ADD32(exc[i], innov[i]);
+
+         if (SUBMODE(double_codebook)) {
+            char *tmp_stack=stack;
+            VARDECL(spx_sig_t *innov2);
+            ALLOC(innov2, st->subframeSize, spx_sig_t);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]=0;
+            for (i=0;i<st->subframeSize;i++)
+               target[i]*=2.5;
+            SUBMODE(innovation_quant)(target, st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, 
+                                      SUBMODE(innovation_params), st->lpcSize, st->subframeSize, 
+                                      innov2, syn_resp, bits, stack, (st->complexity+1)>>1, 0);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]*=scale*(1/2.5)/SIG_SCALING;
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = ADD32(exc[i],innov2[i]);
+            stack = tmp_stack;
+         }
+
+      }
+
+      /*Keep the previous memory*/
+      for (i=0;i<st->lpcSize;i++)
+         mem[i]=st->mem_sp[i];
+      /* Final signal synthesis from excitation */
+      iir_mem2(exc, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, st->mem_sp);
+      
+      /* Compute weighted signal again, from synthesized speech (not sure it's the right thing) */
+      filter_mem2(sp, st->bw_lpc1, st->bw_lpc2, sw, st->subframeSize, st->lpcSize, st->mem_sw);
+   }
+
+
+#ifdef RESYNTH
+   /* Reconstruct the original */
+   fir_mem_up(st->x0d, h0, st->y0, st->full_frame_size, QMF_ORDER, st->g0_mem, stack);
+   fir_mem_up(st->high, h1, st->y1, st->full_frame_size, QMF_ORDER, st->g1_mem, stack);
+
+   for (i=0;i<st->full_frame_size;i++)
+      in[i]=SHR(st->y0[i]-st->y1[i], SIG_SHIFT-1);
+#endif
+   for (i=0;i<st->lpcSize;i++)
+      st->old_lsp[i] = st->lsp[i];
+   for (i=0;i<st->lpcSize;i++)
+      st->old_qlsp[i] = st->qlsp[i];
+
+   st->first=0;
+
+   return 1;
+}
+
+
+
+
+
+void *sb_decoder_init(const SpeexMode *m)
+{
+   SBDecState *st;
+   const SpeexSBMode *mode;
+   st = (SBDecState*)speex_alloc(sizeof(SBDecState));
+   if (!st)
+      return NULL;
+#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
+   st->stack = NULL;
+#else
+   st->stack = (char*)speex_alloc_scratch(SB_DEC_STACK);
+#endif
+   st->mode = m;
+   mode=(const SpeexSBMode*)m->mode;
+
+   st->encode_submode = 1;
+
+
+
+
+   st->st_low = speex_decoder_init(mode->nb_mode);
+   st->full_frame_size = 2*mode->frameSize;
+   st->frame_size = mode->frameSize;
+   st->subframeSize = mode->subframeSize;
+   st->nbSubframes = mode->frameSize/mode->subframeSize;
+   st->lpcSize=mode->lpcSize;
+   speex_decoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate);
+   st->sampling_rate*=2;
+
+   st->submodes=mode->submodes;
+   st->submodeID=mode->defaultSubmode;
+
+   st->first=1;
+
+
+   st->x0d=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->x1d=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+   st->high=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+   st->y0=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+   st->y1=speex_alloc((st->full_frame_size)*sizeof(spx_sig_t));
+
+   st->g0_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word32_t));
+   st->g1_mem=speex_alloc((QMF_ORDER)*sizeof(spx_word32_t));
+
+   st->exc=speex_alloc((st->frame_size)*sizeof(spx_sig_t));
+
+   st->qlsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->old_qlsp = speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
+   st->interp_qlsp = speex_alloc(st->lpcSize*sizeof(spx_lsp_t));
+   st->interp_qlpc = speex_alloc(st->lpcSize*sizeof(spx_coef_t));
+
+   st->pi_gain = speex_alloc((st->nbSubframes)*sizeof(spx_word32_t));
+   st->mem_sp = speex_alloc((2*st->lpcSize)*sizeof(spx_mem_t));
+   
+   st->lpc_enh_enabled=0;
+   st->seed = 1000;
+
+#ifdef ENABLE_VALGRIND
+   VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#endif
+   return st;
+}
+
+void sb_decoder_destroy(void *state)
+{
+   SBDecState *st;
+   st = (SBDecState*)state;
+   speex_decoder_destroy(st->st_low);
+#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
+   speex_free_scratch(st->stack);
+#endif
+
+   speex_free(st->x0d);
+   speex_free(st->x1d);
+   speex_free(st->high);
+   speex_free(st->y0);
+   speex_free(st->y1);
+   speex_free(st->g0_mem);
+   speex_free(st->g1_mem);
+   speex_free(st->exc);
+   speex_free(st->qlsp);
+   speex_free(st->old_qlsp);
+   speex_free(st->interp_qlsp);
+   speex_free(st->interp_qlpc);
+   speex_free(st->pi_gain);
+   speex_free(st->mem_sp);
+
+   speex_free(state);
+}
+
+static void sb_decode_lost(SBDecState *st, spx_word16_t *out, int dtx, char *stack)
+{
+   int i;
+   VARDECL(spx_coef_t *awk1);
+   VARDECL(spx_coef_t *awk2);
+   VARDECL(spx_coef_t *awk3);
+   int saved_modeid=0;
+
+   if (dtx)
+   {
+      saved_modeid=st->submodeID;
+      st->submodeID=1;
+   } else {
+      bw_lpc(GAMMA_SCALING*0.99, st->interp_qlpc, st->interp_qlpc, st->lpcSize);
+   }
+
+   st->first=1;
+   
+   ALLOC(awk1, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk2, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk3, st->lpcSize+1, spx_coef_t);
+   
+   if (st->lpc_enh_enabled)
+   {
+      spx_word16_t k1,k2,k3;
+      if (st->submodes[st->submodeID] != NULL)
+      {
+         k1=SUBMODE(lpc_enh_k1);
+         k2=SUBMODE(lpc_enh_k2);
+         k3=SUBMODE(lpc_enh_k3);
+      } else {
+         k1=k2=.7*GAMMA_SCALING;
+         k3 = 0;
+      }
+      bw_lpc(k1, st->interp_qlpc, awk1, st->lpcSize);
+      bw_lpc(k2, st->interp_qlpc, awk2, st->lpcSize);
+      bw_lpc(k3, st->interp_qlpc, awk3, st->lpcSize);
+      /*fprintf (stderr, "%f %f %f\n", k1, k2, k3);*/
+   }
+   
+   
+   /* Final signal synthesis from excitation */
+   if (!dtx)
+   {
+      spx_word16_t low_ener;
+      low_ener = .9*compute_rms(st->exc, st->frame_size);
+      for (i=0;i<st->frame_size;i++)
+         st->exc[i] = speex_rand(low_ener, &st->seed);
+   }
+
+   for (i=0;i<st->frame_size;i++)
+      st->high[i]=st->exc[i];
+
+   if (st->lpc_enh_enabled)
+   {
+      /* Use enhanced LPC filter */
+      filter_mem2(st->high, awk2, awk1, st->high, st->frame_size, st->lpcSize, 
+                  st->mem_sp+st->lpcSize);
+      filter_mem2(st->high, awk3, st->interp_qlpc, st->high, st->frame_size, st->lpcSize, 
+                  st->mem_sp);
+   } else {
+      /* Use regular filter */
+      for (i=0;i<st->lpcSize;i++)
+         st->mem_sp[st->lpcSize+i] = 0;
+      iir_mem2(st->high, st->interp_qlpc, st->high, st->frame_size, st->lpcSize, 
+               st->mem_sp);
+   }
+   
+   /*iir_mem2(st->exc, st->interp_qlpc, st->high, st->frame_size, st->lpcSize, st->mem_sp);*/
+   
+   /* Reconstruct the original */
+   fir_mem_up(st->x0d, h0, st->y0, st->full_frame_size, QMF_ORDER, st->g0_mem, stack);
+   fir_mem_up(st->high, h1, st->y1, st->full_frame_size, QMF_ORDER, st->g1_mem, stack);
+
+   mix_and_saturate(st->y0, st->y1, out, st->full_frame_size);
+
+   if (dtx)
+   {
+      st->submodeID=saved_modeid;
+   }
+
+   return;
+}
+
+int sb_decode(void *state, SpeexBits *bits, void *vout)
+{
+   int i, sub;
+   SBDecState *st;
+   int wideband;
+   int ret;
+   char *stack;
+   VARDECL(spx_word32_t *low_pi_gain);
+   VARDECL(spx_sig_t *low_exc);
+   VARDECL(spx_sig_t *low_innov);
+   VARDECL(spx_coef_t *awk1);
+   VARDECL(spx_coef_t *awk2);
+   VARDECL(spx_coef_t *awk3);
+   int dtx;
+   const SpeexSBMode *mode;
+   spx_word16_t *out = vout;
+   
+   st = (SBDecState*)state;
+   stack=st->stack;
+   mode = (const SpeexSBMode*)(st->mode->mode);
+
+   {
+      VARDECL(spx_word16_t *low);
+      ALLOC(low, st->frame_size, spx_word16_t);
+      
+      /* Decode the low-band */
+      ret = speex_decode_native(st->st_low, bits, low);
+      
+      for (i=0;i<st->frame_size;i++)
+         st->x0d[i] = SHL((spx_sig_t)low[i], SIG_SHIFT);
+   }
+
+   speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, &dtx);
+
+   /* If error decoding the narrowband part, propagate error */
+   if (ret!=0)
+   {
+      return ret;
+   }
+
+   if (!bits)
+   {
+      sb_decode_lost(st, out, dtx, stack);
+      return 0;
+   }
+
+   if (st->encode_submode)
+   {
+
+      /*Check "wideband bit"*/
+      if (speex_bits_remaining(bits)>0)
+         wideband = speex_bits_peek(bits);
+      else
+         wideband = 0;
+      if (wideband)
+      {
+         /*Regular wideband frame, read the submode*/
+         wideband = speex_bits_unpack_unsigned(bits, 1);
+         st->submodeID = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS);
+      } else
+      {
+         /*Was a narrowband frame, set "null submode"*/
+         st->submodeID = 0;
+      }
+      if (st->submodeID != 0 && st->submodes[st->submodeID] == NULL)
+      {
+         speex_warning("Invalid mode encountered: corrupted stream?");
+         return -2;
+      }
+   }
+
+   /* If null mode (no transmission), just set a couple things to zero*/
+   if (st->submodes[st->submodeID] == NULL)
+   {
+      if (dtx)
+      {
+         sb_decode_lost(st, out, 1, stack);
+         return 0;
+      }
+
+      for (i=0;i<st->frame_size;i++)
+         st->exc[i]=VERY_SMALL;
+
+      st->first=1;
+
+      /* Final signal synthesis from excitation */
+      iir_mem2(st->exc, st->interp_qlpc, st->high, st->frame_size, st->lpcSize, st->mem_sp);
+
+      fir_mem_up(st->x0d, h0, st->y0, st->full_frame_size, QMF_ORDER, st->g0_mem, stack);
+      fir_mem_up(st->high, h1, st->y1, st->full_frame_size, QMF_ORDER, st->g1_mem, stack);
+
+      mix_and_saturate(st->y0, st->y1, out, st->full_frame_size);
+
+      return 0;
+
+   }
+
+   for (i=0;i<st->frame_size;i++)
+      st->exc[i]=0;
+
+   ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t);
+   ALLOC(low_exc, st->frame_size, spx_sig_t);
+   ALLOC(low_innov, st->frame_size, spx_sig_t);
+   speex_decoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain);
+   speex_decoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc);
+   speex_decoder_ctl(st->st_low, SPEEX_GET_INNOV, low_innov);
+
+   SUBMODE(lsp_unquant)(st->qlsp, st->lpcSize, bits);
+   
+   if (st->first)
+   {
+      for (i=0;i<st->lpcSize;i++)
+         st->old_qlsp[i] = st->qlsp[i];
+   }
+   
+   ALLOC(awk1, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk2, st->lpcSize+1, spx_coef_t);
+   ALLOC(awk3, st->lpcSize+1, spx_coef_t);
+
+   for (sub=0;sub<st->nbSubframes;sub++)
+   {
+      spx_sig_t *exc, *sp;
+      spx_word16_t filter_ratio;
+      spx_word16_t el=0;
+      int offset;
+      spx_word32_t rl=0,rh=0;
+      
+      offset = st->subframeSize*sub;
+      sp=st->high+offset;
+      exc=st->exc+offset;
+      
+      /* LSP interpolation */
+      lsp_interpolate(st->old_qlsp, st->qlsp, st->interp_qlsp, st->lpcSize, sub, st->nbSubframes);
+
+      lsp_enforce_margin(st->interp_qlsp, st->lpcSize, LSP_MARGIN);
+
+      /* LSP to LPC */
+      lsp_to_lpc(st->interp_qlsp, st->interp_qlpc, st->lpcSize, stack);
+
+
+      if (st->lpc_enh_enabled)
+      {
+         spx_word16_t k1,k2,k3;
+         k1=SUBMODE(lpc_enh_k1);
+         k2=SUBMODE(lpc_enh_k2);
+         k3=SUBMODE(lpc_enh_k3);
+         bw_lpc(k1, st->interp_qlpc, awk1, st->lpcSize);
+         bw_lpc(k2, st->interp_qlpc, awk2, st->lpcSize);
+         bw_lpc(k3, st->interp_qlpc, awk3, st->lpcSize);
+         /*fprintf (stderr, "%f %f %f\n", k1, k2, k3);*/
+      }
+
+
+      /* Calculate reponse ratio between the low and high filter in the middle
+         of the band (4000 Hz) */
+      
+         st->pi_gain[sub]=LPC_SCALING;
+         rh = LPC_SCALING;
+         for (i=0;i<st->lpcSize;i+=2)
+         {
+            rh += st->interp_qlpc[i+1] - st->interp_qlpc[i];
+            st->pi_gain[sub] += st->interp_qlpc[i] + st->interp_qlpc[i+1];
+         }
+
+         rl = low_pi_gain[sub];
+#ifdef FIXED_POINT
+         filter_ratio=DIV32_16(SHL(rl+82,2),SHR(82+rh,5));
+#else
+         filter_ratio=(rl+.01)/(rh+.01);
+#endif
+      
+      for (i=0;i<st->subframeSize;i++)
+         exc[i]=0;
+      if (!SUBMODE(innovation_unquant))
+      {
+         float g;
+         int quant;
+
+         quant = speex_bits_unpack_unsigned(bits, 5);
+         g= exp(((float)quant-10)/8.0);
+         
+#ifdef FIXED_POINT
+         g /= filter_ratio/128.;
+#else
+         g /= filter_ratio;
+#endif
+         /* High-band excitation using the low-band excitation and a gain */
+         
+#if 0
+         for (i=0;i<st->subframeSize;i++)
+            exc[i]=mode->folding_gain*g*low_innov[offset+i];
+#else
+         {
+            float tmp=1;
+            /*static tmp1=0,tmp2=0;
+            static int seed=1;
+            el = compute_rms(low_innov+offset, st->subframeSize);*/
+            for (i=0;i<st->subframeSize;i++)
+            {
+               float e=tmp*g*mode->folding_gain*low_innov[offset+i];
+               tmp *= -1;
+               exc[i] = e;
+               /*float r = speex_rand(g*el,&seed);
+               exc[i] = .5*(r+tmp2 + e-tmp1);
+               tmp1 = e;
+               tmp2 = r;*/               
+            }
+            
+         }
+         
+         /*speex_rand_vec(mode->folding_gain*g*el, exc, st->subframeSize);*/
+#endif    
+      } else {
+         spx_word16_t gc;
+         spx_word32_t scale;
+         int qgc = speex_bits_unpack_unsigned(bits, 4);
+
+         el = compute_rms(low_exc+offset, st->subframeSize);
+
+#ifdef FIXED_POINT
+         gc = MULT16_32_Q15(28626,gc_quant_bound[qgc]);
+#else
+         gc = exp((1/3.7)*qgc-0.15556);
+#endif
+
+         if (st->subframeSize==80)
+            gc *= 1.4142;
+
+         scale = SHL(MULT16_16(DIV32_16(SHL(gc,SIG_SHIFT-4),filter_ratio),(1+el)),4);
+
+         SUBMODE(innovation_unquant)(exc, SUBMODE(innovation_params), st->subframeSize, 
+                                bits, stack);
+
+         signal_mul(exc,exc,scale,st->subframeSize);
+
+         if (SUBMODE(double_codebook)) {
+            char *tmp_stack=stack;
+            VARDECL(spx_sig_t *innov2);
+            ALLOC(innov2, st->subframeSize, spx_sig_t);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]=0;
+            SUBMODE(innovation_unquant)(innov2, SUBMODE(innovation_params), st->subframeSize, 
+                                bits, stack);
+            for (i=0;i<st->subframeSize;i++)
+               innov2[i]*=scale/(float)SIG_SCALING*(1/2.5);
+            for (i=0;i<st->subframeSize;i++)
+               exc[i] = ADD32(exc[i],innov2[i]);
+            stack = tmp_stack;
+         }
+
+      }
+
+      for (i=0;i<st->subframeSize;i++)
+         sp[i]=exc[i];
+      if (st->lpc_enh_enabled)
+      {
+         /* Use enhanced LPC filter */
+         filter_mem2(sp, awk2, awk1, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp+st->lpcSize);
+         filter_mem2(sp, awk3, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      } else {
+         /* Use regular filter */
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sp[st->lpcSize+i] = 0;
+         iir_mem2(sp, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, 
+                     st->mem_sp);
+      }
+      /*iir_mem2(exc, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, st->mem_sp);*/
+
+   }
+
+   fir_mem_up(st->x0d, h0, st->y0, st->full_frame_size, QMF_ORDER, st->g0_mem, stack);
+   fir_mem_up(st->high, h1, st->y1, st->full_frame_size, QMF_ORDER, st->g1_mem, stack);
+
+   mix_and_saturate(st->y0, st->y1, out, st->full_frame_size);
+
+   for (i=0;i<st->lpcSize;i++)
+      st->old_qlsp[i] = st->qlsp[i];
+
+   st->first=0;
+
+   return 0;
+}
+
+
+int sb_encoder_ctl(void *state, int request, void *ptr)
+{
+   SBEncState *st;
+   st=(SBEncState*)state;
+   switch(request)
+   {
+   case SPEEX_GET_FRAME_SIZE:
+      (*(int*)ptr) = st->full_frame_size;
+      break;
+   case SPEEX_SET_HIGH_MODE:
+      st->submodeSelect = st->submodeID = (*(int*)ptr);
+      break;
+   case SPEEX_SET_LOW_MODE:
+      speex_encoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr);
+      break;
+   case SPEEX_SET_DTX:
+      speex_encoder_ctl(st->st_low, SPEEX_SET_DTX, ptr);
+      break;
+   case SPEEX_GET_DTX:
+      speex_encoder_ctl(st->st_low, SPEEX_GET_DTX, ptr);
+      break;
+   case SPEEX_GET_LOW_MODE:
+      speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr);
+      break;
+   case SPEEX_SET_MODE:
+      speex_encoder_ctl(st, SPEEX_SET_QUALITY, ptr);
+      break;
+   case SPEEX_SET_VBR:
+      st->vbr_enabled = (*(int*)ptr);
+      speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, ptr);
+      break;
+   case SPEEX_GET_VBR:
+      (*(int*)ptr) = st->vbr_enabled;
+      break;
+   case SPEEX_SET_VAD:
+      st->vad_enabled = (*(int*)ptr);
+      speex_encoder_ctl(st->st_low, SPEEX_SET_VAD, ptr);
+      break;
+   case SPEEX_GET_VAD:
+      (*(int*)ptr) = st->vad_enabled;
+      break;
+   case SPEEX_SET_VBR_QUALITY:
+      {
+         int q;
+         float qual = (*(float*)ptr)+.6;
+         st->vbr_quality = (*(float*)ptr);
+         if (qual>10)
+            qual=10;
+         q=(int)floor(.5+*(float*)ptr);
+         if (q>10)
+            q=10;
+         speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_QUALITY, &qual);
+         speex_encoder_ctl(state, SPEEX_SET_QUALITY, &q);
+         break;
+      }
+   case SPEEX_GET_VBR_QUALITY:
+      (*(float*)ptr) = st->vbr_quality;
+      break;
+   case SPEEX_SET_ABR:
+      st->abr_enabled = (*(int*)ptr);
+      st->vbr_enabled = 1;
+      speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, &st->vbr_enabled);
+      {
+         int i=10, rate, target;
+         float vbr_qual;
+         target = (*(int*)ptr);
+         while (i>=0)
+         {
+            speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
+            speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
+            if (rate <= target)
+               break;
+            i--;
+         }
+         vbr_qual=i;
+         if (vbr_qual<0)
+            vbr_qual=0;
+         speex_encoder_ctl(st, SPEEX_SET_VBR_QUALITY, &vbr_qual);
+         st->abr_count=0;
+         st->abr_drift=0;
+         st->abr_drift2=0;
+      }
+      
+      break;
+   case SPEEX_GET_ABR:
+      (*(int*)ptr) = st->abr_enabled;
+      break;
+   case SPEEX_SET_QUALITY:
+      {
+         int nb_qual;
+         int quality = (*(int*)ptr);
+         if (quality < 0)
+            quality = 0;
+         if (quality > 10)
+            quality = 10;
+         st->submodeSelect = st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality];
+         nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality];
+         speex_encoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual);
+      }
+      break;
+   case SPEEX_SET_COMPLEXITY:
+      speex_encoder_ctl(st->st_low, SPEEX_SET_COMPLEXITY, ptr);
+      st->complexity = (*(int*)ptr);
+      if (st->complexity<1)
+         st->complexity=1;
+      break;
+   case SPEEX_GET_COMPLEXITY:
+      (*(int*)ptr) = st->complexity;
+      break;
+   case SPEEX_SET_BITRATE:
+      {
+         int i=10, rate, target;
+         target = (*(int*)ptr);
+         while (i>=0)
+         {
+            speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
+            speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
+            if (rate <= target)
+               break;
+            i--;
+         }
+      }
+      break;
+   case SPEEX_GET_BITRATE:
+      speex_encoder_ctl(st->st_low, request, ptr);
+      /*fprintf (stderr, "before: %d\n", (*(int*)ptr));*/
+      if (st->submodes[st->submodeID])
+         (*(int*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size;
+      else
+         (*(int*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size;
+      /*fprintf (stderr, "after: %d\n", (*(int*)ptr));*/
+      break;
+   case SPEEX_SET_SAMPLING_RATE:
+      {
+         int tmp=(*(int*)ptr);
+         st->sampling_rate = tmp;
+         tmp>>=1;
+         speex_encoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp);
+      }
+      break;
+   case SPEEX_GET_SAMPLING_RATE:
+      (*(int*)ptr)=st->sampling_rate;
+      break;
+   case SPEEX_RESET_STATE:
+      {
+         int i;
+         st->first = 1;
+         for (i=0;i<st->lpcSize;i++)
+            st->lsp[i]=(M_PI*((float)(i+1)))/(st->lpcSize+1);
+         for (i=0;i<st->lpcSize;i++)
+            st->mem_sw[i]=st->mem_sp[i]=st->mem_sp2[i]=0;
+         for (i=0;i<st->bufSize;i++)
+            st->excBuf[i]=0;
+         for (i=0;i<QMF_ORDER;i++)
+            st->h0_mem[i]=st->h1_mem[i]=st->g0_mem[i]=st->g1_mem[i]=0;
+      }
+      break;
+   case SPEEX_SET_SUBMODE_ENCODING:
+      st->encode_submode = (*(int*)ptr);
+      speex_encoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, &ptr);
+      break;
+   case SPEEX_GET_SUBMODE_ENCODING:
+      (*(int*)ptr) = st->encode_submode;
+      break;
+   case SPEEX_GET_LOOKAHEAD:
+      speex_encoder_ctl(st->st_low, SPEEX_GET_LOOKAHEAD, ptr);
+      (*(int*)ptr) = 2*(*(int*)ptr) + QMF_ORDER - 1;
+      break;
+   case SPEEX_GET_PI_GAIN:
+      {
+         int i;
+         spx_word32_t *g = (spx_word32_t*)ptr;
+         for (i=0;i<st->nbSubframes;i++)
+            g[i]=st->pi_gain[i];
+      }
+      break;
+   case SPEEX_GET_EXC:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->full_frame_size;i++)
+            e[i]=0;
+         for (i=0;i<st->frame_size;i++)
+            e[2*i]=2*st->exc[i];
+      }
+      break;
+   case SPEEX_GET_INNOV:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->full_frame_size;i++)
+            e[i]=0;
+         for (i=0;i<st->frame_size;i++)
+            e[2*i]=2*st->exc[i];
+      }
+      break;
+   case SPEEX_GET_RELATIVE_QUALITY:
+      (*(float*)ptr)=st->relative_quality;
+      break;
+   default:
+      speex_warning_int("Unknown nb_ctl request: ", request);
+      return -1;
+   }
+   return 0;
+}
+
+int sb_decoder_ctl(void *state, int request, void *ptr)
+{
+   SBDecState *st;
+   st=(SBDecState*)state;
+   switch(request)
+   {
+   case SPEEX_SET_HIGH_MODE:
+      st->submodeID = (*(int*)ptr);
+      break;
+   case SPEEX_SET_LOW_MODE:
+      speex_decoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr);
+      break;
+   case SPEEX_GET_LOW_MODE:
+      speex_decoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr);
+      break;
+   case SPEEX_GET_FRAME_SIZE:
+      (*(int*)ptr) = st->full_frame_size;
+      break;
+   case SPEEX_SET_ENH:
+      speex_decoder_ctl(st->st_low, request, ptr);
+      st->lpc_enh_enabled = *((int*)ptr);
+      break;
+   case SPEEX_GET_ENH:
+      *((int*)ptr) = st->lpc_enh_enabled;
+      break;
+   case SPEEX_SET_MODE:
+   case SPEEX_SET_QUALITY:
+      {
+         int nb_qual;
+         int quality = (*(int*)ptr);
+         if (quality < 0)
+            quality = 0;
+         if (quality > 10)
+            quality = 10;
+         st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality];
+         nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality];
+         speex_decoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual);
+      }
+      break;
+   case SPEEX_GET_BITRATE:
+      speex_decoder_ctl(st->st_low, request, ptr);
+      if (st->submodes[st->submodeID])
+         (*(int*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size;
+      else
+         (*(int*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size;
+      break;
+   case SPEEX_SET_SAMPLING_RATE:
+      {
+         int tmp=(*(int*)ptr);
+         st->sampling_rate = tmp;
+         tmp>>=1;
+         speex_decoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp);
+      }
+      break;
+   case SPEEX_GET_SAMPLING_RATE:
+      (*(int*)ptr)=st->sampling_rate;
+      break;
+   case SPEEX_SET_HANDLER:
+      speex_decoder_ctl(st->st_low, SPEEX_SET_HANDLER, ptr);
+      break;
+   case SPEEX_SET_USER_HANDLER:
+      speex_decoder_ctl(st->st_low, SPEEX_SET_USER_HANDLER, ptr);
+      break;
+   case SPEEX_RESET_STATE:
+      {
+         int i;
+         for (i=0;i<2*st->lpcSize;i++)
+            st->mem_sp[i]=0;
+         for (i=0;i<QMF_ORDER;i++)
+            st->g0_mem[i]=st->g1_mem[i]=0;
+      }
+      break;
+   case SPEEX_SET_SUBMODE_ENCODING:
+      st->encode_submode = (*(int*)ptr);
+      speex_decoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, &ptr);
+      break;
+   case SPEEX_GET_SUBMODE_ENCODING:
+      (*(int*)ptr) = st->encode_submode;
+      break;
+   case SPEEX_GET_PI_GAIN:
+      {
+         int i;
+         spx_word32_t *g = (spx_word32_t*)ptr;
+         for (i=0;i<st->nbSubframes;i++)
+            g[i]=st->pi_gain[i];
+      }
+      break;
+   case SPEEX_GET_EXC:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->full_frame_size;i++)
+            e[i]=0;
+         for (i=0;i<st->frame_size;i++)
+            e[2*i]=2*st->exc[i];
+      }
+      break;
+   case SPEEX_GET_INNOV:
+      {
+         int i;
+         spx_sig_t *e = (spx_sig_t*)ptr;
+         for (i=0;i<st->full_frame_size;i++)
+            e[i]=0;
+         for (i=0;i<st->frame_size;i++)
+            e[2*i]=2*st->exc[i];
+      }
+      break;
+   case SPEEX_GET_DTX_STATUS:
+      speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, ptr);
+      break;
+   default:
+      speex_warning_int("Unknown nb_ctl request: ", request);
+      return -1;
+   }
+   return 0;
+}
+
+#endif
+
diff --git a/pjmedia/src/pjmedia-codec/speex/sb_celp.h b/pjmedia/src/pjmedia-codec/speex/sb_celp.h
new file mode 100644
index 00000000..c2831093
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/sb_celp.h
@@ -0,0 +1,169 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file sb_celp.h
+   @brief Sub-band CELP mode used for wideband encoding
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SB_CELP_H
+#define SB_CELP_H
+
+#include "modes.h"
+#include <speex/speex_bits.h>
+#include "nb_celp.h"
+
+/**Structure representing the full state of the sub-band encoder*/
+typedef struct SBEncState {
+   const SpeexMode *mode;            /**< Pointer to the mode (containing for vtable info) */
+   void *st_low;               /**< State of the low-band (narrowband) encoder */
+   int    full_frame_size;     /**< Length of full-band frames*/
+   int    frame_size;          /**< Length of high-band frames*/
+   int    subframeSize;        /**< Length of high-band sub-frames*/
+   int    nbSubframes;         /**< Number of high-band sub-frames*/
+   int    windowSize;          /**< Length of high-band LPC window*/
+   int    lpcSize;             /**< Order of high-band LPC analysis */
+   int    bufSize;             /**< Buffer size */
+   int    first;               /**< First frame? */
+   float  lag_factor;          /**< Lag-windowing control parameter */
+   spx_word16_t  lpc_floor;           /**< Controls LPC analysis noise floor */
+   spx_word16_t  gamma1;              /**< Perceptual weighting coef 1 */
+   spx_word16_t  gamma2;              /**< Perceptual weighting coef 2 */
+
+   char  *stack;               /**< Temporary allocation stack */
+   spx_sig_t *x0d, *x1d; /**< QMF filter signals*/
+   spx_sig_t *high;                /**< High-band signal (buffer) */
+   spx_sig_t *y0, *y1;             /**< QMF synthesis signals */
+   spx_word16_t *h0_mem, *h1_mem;
+   spx_word32_t *g0_mem, *g1_mem; /**< QMF memories */
+
+   spx_sig_t *excBuf;              /**< High-band excitation */
+   spx_sig_t *exc;                 /**< High-band excitation (for QMF only)*/
+   spx_sig_t *res;                 /**< Zero-input response (ringing) */
+   spx_sig_t *sw;                  /**< Perceptually weighted signal */
+   spx_sig_t *target;              /**< Weighted target signal (analysis by synthesis) */
+   spx_word16_t *window;              /**< LPC analysis window */
+   spx_word16_t *lagWindow;           /**< Auto-correlation window */
+   spx_word16_t *autocorr;            /**< Auto-correlation (for LPC analysis) */
+   spx_coef_t *lpc;                 /**< LPC coefficients */
+   spx_lsp_t *lsp;                 /**< LSP coefficients */
+   spx_lsp_t *qlsp;                /**< Quantized LSPs */
+   spx_lsp_t *old_lsp;             /**< LSPs of previous frame */
+   spx_lsp_t *old_qlsp;            /**< Quantized LSPs of previous frame */
+   spx_lsp_t *interp_lsp;          /**< Interpolated LSPs for current sub-frame */
+   spx_lsp_t *interp_qlsp;         /**< Interpolated quantized LSPs for current sub-frame */
+   spx_coef_t *interp_lpc;          /**< Interpolated LPCs for current sub-frame */
+   spx_coef_t *interp_qlpc;         /**< Interpolated quantized LPCs for current sub-frame */
+   spx_coef_t *bw_lpc1;             /**< Bandwidth-expanded version of LPCs (#1) */
+   spx_coef_t *bw_lpc2;             /**< Bandwidth-expanded version of LPCs (#2) */
+
+   spx_mem_t *mem_sp;              /**< Synthesis signal memory */
+   spx_mem_t *mem_sp2;
+   spx_mem_t *mem_sw;              /**< Perceptual signal memory */
+   spx_word32_t *pi_gain;
+
+   float  vbr_quality;         /**< Quality setting for VBR encoding */
+   int    vbr_enabled;         /**< 1 for enabling VBR, 0 otherwise */
+   int    abr_enabled;         /**< ABR setting (in bps), 0 if off */
+   float  abr_drift;
+   float  abr_drift2;
+   float  abr_count;
+   int    vad_enabled;         /**< 1 for enabling VAD, 0 otherwise */
+   float  relative_quality;
+
+   int    encode_submode;
+   const SpeexSubmode * const *submodes;
+   int    submodeID;
+   int    submodeSelect;
+   int    complexity;
+   int    sampling_rate;
+
+} SBEncState;
+
+
+/**Structure representing the full state of the sub-band decoder*/
+typedef struct SBDecState {
+   const SpeexMode *mode;            /**< Pointer to the mode (containing for vtable info) */
+   void *st_low;               /**< State of the low-band (narrowband) encoder */
+   int    full_frame_size;
+   int    frame_size;
+   int    subframeSize;
+   int    nbSubframes;
+   int    lpcSize;
+   int    first;
+   int    sampling_rate;
+   int    lpc_enh_enabled;
+
+   char  *stack;
+   spx_sig_t *x0d, *x1d;
+   spx_sig_t *high;
+   spx_sig_t *y0, *y1;
+   spx_word32_t *g0_mem, *g1_mem;
+
+   spx_sig_t *exc;
+   spx_lsp_t *qlsp;
+   spx_lsp_t *old_qlsp;
+   spx_lsp_t *interp_qlsp;
+   spx_coef_t *interp_qlpc;
+
+   spx_mem_t *mem_sp;
+   spx_word32_t *pi_gain;
+   spx_int32_t seed;
+
+   int    encode_submode;
+   const SpeexSubmode * const *submodes;
+   int    submodeID;
+} SBDecState;
+
+
+/**Initializes encoder state*/
+void *sb_encoder_init(const SpeexMode *m);
+
+/**De-allocates encoder state resources*/
+void sb_encoder_destroy(void *state);
+
+/**Encodes one frame*/
+int sb_encode(void *state, void *in, SpeexBits *bits);
+
+
+/**Initializes decoder state*/
+void *sb_decoder_init(const SpeexMode *m);
+
+/**De-allocates decoder state resources*/
+void sb_decoder_destroy(void *state);
+
+/**Decodes one frame*/
+int sb_decode(void *state, SpeexBits *bits, void *out);
+
+int sb_encoder_ctl(void *state, int request, void *ptr);
+
+int sb_decoder_ctl(void *state, int request, void *ptr);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/smallft.c b/pjmedia/src/pjmedia-codec/speex/smallft.c
new file mode 100644
index 00000000..ad8c3d93
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/smallft.c
@@ -0,0 +1,1260 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
+ * by the XIPHOPHORUS Company http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: *unnormalized* fft transform
+ last mod: $Id$
+
+ ********************************************************************/
+
+/* FFT implementation from OggSquish, minus cosine transforms,
+ * minus all but radix 2/4 case.  In Vorbis we only need this
+ * cut-down version.
+ *
+ * To do more than just power-of-two sized vectors, see the full
+ * version I wrote for NetLib.
+ *
+ * Note that the packing is a little strange; rather than the FFT r/i
+ * packing following R_0, I_n, R_1, I_1, R_2, I_2 ... R_n-1, I_n-1,
+ * it follows R_0, R_1, I_1, R_2, I_2 ... R_n-1, I_n-1, I_n like the
+ * FORTRAN version
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "smallft.h"
+#include "misc.h"
+
+static void drfti1(int n, float *wa, int *ifac){
+  static int ntryh[4] = { 4,2,3,5 };
+  static float tpi = 6.28318530717958648f;
+  float arg,argh,argld,fi;
+  int ntry=0,i,j=-1;
+  int k1, l1, l2, ib;
+  int ld, ii, ip, is, nq, nr;
+  int ido, ipm, nfm1;
+  int nl=n;
+  int nf=0;
+
+ L101:
+  j++;
+  if (j < 4)
+    ntry=ntryh[j];
+  else
+    ntry+=2;
+
+ L104:
+  nq=nl/ntry;
+  nr=nl-ntry*nq;
+  if (nr!=0) goto L101;
+
+  nf++;
+  ifac[nf+1]=ntry;
+  nl=nq;
+  if(ntry!=2)goto L107;
+  if(nf==1)goto L107;
+
+  for (i=1;i<nf;i++){
+    ib=nf-i+1;
+    ifac[ib+1]=ifac[ib];
+  }
+  ifac[2] = 2;
+
+ L107:
+  if(nl!=1)goto L104;
+  ifac[0]=n;
+  ifac[1]=nf;
+  argh=tpi/n;
+  is=0;
+  nfm1=nf-1;
+  l1=1;
+
+  if(nfm1==0)return;
+
+  for (k1=0;k1<nfm1;k1++){
+    ip=ifac[k1+2];
+    ld=0;
+    l2=l1*ip;
+    ido=n/l2;
+    ipm=ip-1;
+
+    for (j=0;j<ipm;j++){
+      ld+=l1;
+      i=is;
+      argld=(float)ld*argh;
+      fi=0.f;
+      for (ii=2;ii<ido;ii+=2){
+	fi+=1.f;
+	arg=fi*argld;
+	wa[i++]=cos(arg);
+	wa[i++]=sin(arg);
+      }
+      is+=ido;
+    }
+    l1=l2;
+  }
+}
+
+static void fdrffti(int n, float *wsave, int *ifac){
+
+  if (n == 1) return;
+  drfti1(n, wsave+n, ifac);
+}
+
+static void dradf2(int ido,int l1,float *cc,float *ch,float *wa1){
+  int i,k;
+  float ti2,tr2;
+  int t0,t1,t2,t3,t4,t5,t6;
+
+  t1=0;
+  t0=(t2=l1*ido);
+  t3=ido<<1;
+  for(k=0;k<l1;k++){
+    ch[t1<<1]=cc[t1]+cc[t2];
+    ch[(t1<<1)+t3-1]=cc[t1]-cc[t2];
+    t1+=ido;
+    t2+=ido;
+  }
+    
+  if(ido<2)return;
+  if(ido==2)goto L105;
+
+  t1=0;
+  t2=t0;
+  for(k=0;k<l1;k++){
+    t3=t2;
+    t4=(t1<<1)+(ido<<1);
+    t5=t1;
+    t6=t1+t1;
+    for(i=2;i<ido;i+=2){
+      t3+=2;
+      t4-=2;
+      t5+=2;
+      t6+=2;
+      tr2=wa1[i-2]*cc[t3-1]+wa1[i-1]*cc[t3];
+      ti2=wa1[i-2]*cc[t3]-wa1[i-1]*cc[t3-1];
+      ch[t6]=cc[t5]+ti2;
+      ch[t4]=ti2-cc[t5];
+      ch[t6-1]=cc[t5-1]+tr2;
+      ch[t4-1]=cc[t5-1]-tr2;
+    }
+    t1+=ido;
+    t2+=ido;
+  }
+
+  if(ido%2==1)return;
+
+ L105:
+  t3=(t2=(t1=ido)-1);
+  t2+=t0;
+  for(k=0;k<l1;k++){
+    ch[t1]=-cc[t2];
+    ch[t1-1]=cc[t3];
+    t1+=ido<<1;
+    t2+=ido;
+    t3+=ido;
+  }
+}
+
+static void dradf4(int ido,int l1,float *cc,float *ch,float *wa1,
+	    float *wa2,float *wa3){
+  static float hsqt2 = .70710678118654752f;
+  int i,k,t0,t1,t2,t3,t4,t5,t6;
+  float ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
+  t0=l1*ido;
+  
+  t1=t0;
+  t4=t1<<1;
+  t2=t1+(t1<<1);
+  t3=0;
+
+  for(k=0;k<l1;k++){
+    tr1=cc[t1]+cc[t2];
+    tr2=cc[t3]+cc[t4];
+
+    ch[t5=t3<<2]=tr1+tr2;
+    ch[(ido<<2)+t5-1]=tr2-tr1;
+    ch[(t5+=(ido<<1))-1]=cc[t3]-cc[t4];
+    ch[t5]=cc[t2]-cc[t1];
+
+    t1+=ido;
+    t2+=ido;
+    t3+=ido;
+    t4+=ido;
+  }
+
+  if(ido<2)return;
+  if(ido==2)goto L105;
+
+
+  t1=0;
+  for(k=0;k<l1;k++){
+    t2=t1;
+    t4=t1<<2;
+    t5=(t6=ido<<1)+t4;
+    for(i=2;i<ido;i+=2){
+      t3=(t2+=2);
+      t4+=2;
+      t5-=2;
+
+      t3+=t0;
+      cr2=wa1[i-2]*cc[t3-1]+wa1[i-1]*cc[t3];
+      ci2=wa1[i-2]*cc[t3]-wa1[i-1]*cc[t3-1];
+      t3+=t0;
+      cr3=wa2[i-2]*cc[t3-1]+wa2[i-1]*cc[t3];
+      ci3=wa2[i-2]*cc[t3]-wa2[i-1]*cc[t3-1];
+      t3+=t0;
+      cr4=wa3[i-2]*cc[t3-1]+wa3[i-1]*cc[t3];
+      ci4=wa3[i-2]*cc[t3]-wa3[i-1]*cc[t3-1];
+
+      tr1=cr2+cr4;
+      tr4=cr4-cr2;
+      ti1=ci2+ci4;
+      ti4=ci2-ci4;
+
+      ti2=cc[t2]+ci3;
+      ti3=cc[t2]-ci3;
+      tr2=cc[t2-1]+cr3;
+      tr3=cc[t2-1]-cr3;
+
+      ch[t4-1]=tr1+tr2;
+      ch[t4]=ti1+ti2;
+
+      ch[t5-1]=tr3-ti4;
+      ch[t5]=tr4-ti3;
+
+      ch[t4+t6-1]=ti4+tr3;
+      ch[t4+t6]=tr4+ti3;
+
+      ch[t5+t6-1]=tr2-tr1;
+      ch[t5+t6]=ti1-ti2;
+    }
+    t1+=ido;
+  }
+  if(ido&1)return;
+
+ L105:
+  
+  t2=(t1=t0+ido-1)+(t0<<1);
+  t3=ido<<2;
+  t4=ido;
+  t5=ido<<1;
+  t6=ido;
+
+  for(k=0;k<l1;k++){
+    ti1=-hsqt2*(cc[t1]+cc[t2]);
+    tr1=hsqt2*(cc[t1]-cc[t2]);
+
+    ch[t4-1]=tr1+cc[t6-1];
+    ch[t4+t5-1]=cc[t6-1]-tr1;
+
+    ch[t4]=ti1-cc[t1+t0];
+    ch[t4+t5]=ti1+cc[t1+t0];
+
+    t1+=ido;
+    t2+=ido;
+    t4+=t3;
+    t6+=ido;
+  }
+}
+
+static void dradfg(int ido,int ip,int l1,int idl1,float *cc,float *c1,
+                          float *c2,float *ch,float *ch2,float *wa){
+
+  static float tpi=6.283185307179586f;
+  int idij,ipph,i,j,k,l,ic,ik,is;
+  int t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
+  float dc2,ai1,ai2,ar1,ar2,ds2;
+  int nbd;
+  float dcp,arg,dsp,ar1h,ar2h;
+  int idp2,ipp2;
+  
+  arg=tpi/(float)ip;
+  dcp=cos(arg);
+  dsp=sin(arg);
+  ipph=(ip+1)>>1;
+  ipp2=ip;
+  idp2=ido;
+  nbd=(ido-1)>>1;
+  t0=l1*ido;
+  t10=ip*ido;
+
+  if(ido==1)goto L119;
+  for(ik=0;ik<idl1;ik++)ch2[ik]=c2[ik];
+
+  t1=0;
+  for(j=1;j<ip;j++){
+    t1+=t0;
+    t2=t1;
+    for(k=0;k<l1;k++){
+      ch[t2]=c1[t2];
+      t2+=ido;
+    }
+  }
+
+  is=-ido;
+  t1=0;
+  if(nbd>l1){
+    for(j=1;j<ip;j++){
+      t1+=t0;
+      is+=ido;
+      t2= -ido+t1;
+      for(k=0;k<l1;k++){
+        idij=is-1;
+        t2+=ido;
+        t3=t2;
+        for(i=2;i<ido;i+=2){
+          idij+=2;
+          t3+=2;
+          ch[t3-1]=wa[idij-1]*c1[t3-1]+wa[idij]*c1[t3];
+          ch[t3]=wa[idij-1]*c1[t3]-wa[idij]*c1[t3-1];
+        }
+      }
+    }
+  }else{
+
+    for(j=1;j<ip;j++){
+      is+=ido;
+      idij=is-1;
+      t1+=t0;
+      t2=t1;
+      for(i=2;i<ido;i+=2){
+        idij+=2;
+        t2+=2;
+        t3=t2;
+        for(k=0;k<l1;k++){
+          ch[t3-1]=wa[idij-1]*c1[t3-1]+wa[idij]*c1[t3];
+          ch[t3]=wa[idij-1]*c1[t3]-wa[idij]*c1[t3-1];
+          t3+=ido;
+        }
+      }
+    }
+  }
+
+  t1=0;
+  t2=ipp2*t0;
+  if(nbd<l1){
+    for(j=1;j<ipph;j++){
+      t1+=t0;
+      t2-=t0;
+      t3=t1;
+      t4=t2;
+      for(i=2;i<ido;i+=2){
+        t3+=2;
+        t4+=2;
+        t5=t3-ido;
+        t6=t4-ido;
+        for(k=0;k<l1;k++){
+          t5+=ido;
+          t6+=ido;
+          c1[t5-1]=ch[t5-1]+ch[t6-1];
+          c1[t6-1]=ch[t5]-ch[t6];
+          c1[t5]=ch[t5]+ch[t6];
+          c1[t6]=ch[t6-1]-ch[t5-1];
+        }
+      }
+    }
+  }else{
+    for(j=1;j<ipph;j++){
+      t1+=t0;
+      t2-=t0;
+      t3=t1;
+      t4=t2;
+      for(k=0;k<l1;k++){
+        t5=t3;
+        t6=t4;
+        for(i=2;i<ido;i+=2){
+          t5+=2;
+          t6+=2;
+          c1[t5-1]=ch[t5-1]+ch[t6-1];
+          c1[t6-1]=ch[t5]-ch[t6];
+          c1[t5]=ch[t5]+ch[t6];
+          c1[t6]=ch[t6-1]-ch[t5-1];
+        }
+        t3+=ido;
+        t4+=ido;
+      }
+    }
+  }
+
+L119:
+  for(ik=0;ik<idl1;ik++)c2[ik]=ch2[ik];
+
+  t1=0;
+  t2=ipp2*idl1;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1-ido;
+    t4=t2-ido;
+    for(k=0;k<l1;k++){
+      t3+=ido;
+      t4+=ido;
+      c1[t3]=ch[t3]+ch[t4];
+      c1[t4]=ch[t4]-ch[t3];
+    }
+  }
+
+  ar1=1.f;
+  ai1=0.f;
+  t1=0;
+  t2=ipp2*idl1;
+  t3=(ip-1)*idl1;
+  for(l=1;l<ipph;l++){
+    t1+=idl1;
+    t2-=idl1;
+    ar1h=dcp*ar1-dsp*ai1;
+    ai1=dcp*ai1+dsp*ar1;
+    ar1=ar1h;
+    t4=t1;
+    t5=t2;
+    t6=t3;
+    t7=idl1;
+
+    for(ik=0;ik<idl1;ik++){
+      ch2[t4++]=c2[ik]+ar1*c2[t7++];
+      ch2[t5++]=ai1*c2[t6++];
+    }
+
+    dc2=ar1;
+    ds2=ai1;
+    ar2=ar1;
+    ai2=ai1;
+
+    t4=idl1;
+    t5=(ipp2-1)*idl1;
+    for(j=2;j<ipph;j++){
+      t4+=idl1;
+      t5-=idl1;
+
+      ar2h=dc2*ar2-ds2*ai2;
+      ai2=dc2*ai2+ds2*ar2;
+      ar2=ar2h;
+
+      t6=t1;
+      t7=t2;
+      t8=t4;
+      t9=t5;
+      for(ik=0;ik<idl1;ik++){
+        ch2[t6++]+=ar2*c2[t8++];
+        ch2[t7++]+=ai2*c2[t9++];
+      }
+    }
+  }
+
+  t1=0;
+  for(j=1;j<ipph;j++){
+    t1+=idl1;
+    t2=t1;
+    for(ik=0;ik<idl1;ik++)ch2[ik]+=c2[t2++];
+  }
+
+  if(ido<l1)goto L132;
+
+  t1=0;
+  t2=0;
+  for(k=0;k<l1;k++){
+    t3=t1;
+    t4=t2;
+    for(i=0;i<ido;i++)cc[t4++]=ch[t3++];
+    t1+=ido;
+    t2+=t10;
+  }
+
+  goto L135;
+
+ L132:
+  for(i=0;i<ido;i++){
+    t1=i;
+    t2=i;
+    for(k=0;k<l1;k++){
+      cc[t2]=ch[t1];
+      t1+=ido;
+      t2+=t10;
+    }
+  }
+
+ L135:
+  t1=0;
+  t2=ido<<1;
+  t3=0;
+  t4=ipp2*t0;
+  for(j=1;j<ipph;j++){
+
+    t1+=t2;
+    t3+=t0;
+    t4-=t0;
+
+    t5=t1;
+    t6=t3;
+    t7=t4;
+
+    for(k=0;k<l1;k++){
+      cc[t5-1]=ch[t6];
+      cc[t5]=ch[t7];
+      t5+=t10;
+      t6+=ido;
+      t7+=ido;
+    }
+  }
+
+  if(ido==1)return;
+  if(nbd<l1)goto L141;
+
+  t1=-ido;
+  t3=0;
+  t4=0;
+  t5=ipp2*t0;
+  for(j=1;j<ipph;j++){
+    t1+=t2;
+    t3+=t2;
+    t4+=t0;
+    t5-=t0;
+    t6=t1;
+    t7=t3;
+    t8=t4;
+    t9=t5;
+    for(k=0;k<l1;k++){
+      for(i=2;i<ido;i+=2){
+        ic=idp2-i;
+        cc[i+t7-1]=ch[i+t8-1]+ch[i+t9-1];
+        cc[ic+t6-1]=ch[i+t8-1]-ch[i+t9-1];
+        cc[i+t7]=ch[i+t8]+ch[i+t9];
+        cc[ic+t6]=ch[i+t9]-ch[i+t8];
+      }
+      t6+=t10;
+      t7+=t10;
+      t8+=ido;
+      t9+=ido;
+    }
+  }
+  return;
+
+ L141:
+
+  t1=-ido;
+  t3=0;
+  t4=0;
+  t5=ipp2*t0;
+  for(j=1;j<ipph;j++){
+    t1+=t2;
+    t3+=t2;
+    t4+=t0;
+    t5-=t0;
+    for(i=2;i<ido;i+=2){
+      t6=idp2+t1-i;
+      t7=i+t3;
+      t8=i+t4;
+      t9=i+t5;
+      for(k=0;k<l1;k++){
+        cc[t7-1]=ch[t8-1]+ch[t9-1];
+        cc[t6-1]=ch[t8-1]-ch[t9-1];
+        cc[t7]=ch[t8]+ch[t9];
+        cc[t6]=ch[t9]-ch[t8];
+        t6+=t10;
+        t7+=t10;
+        t8+=ido;
+        t9+=ido;
+      }
+    }
+  }
+}
+
+static void drftf1(int n,float *c,float *ch,float *wa,int *ifac){
+  int i,k1,l1,l2;
+  int na,kh,nf;
+  int ip,iw,ido,idl1,ix2,ix3;
+
+  nf=ifac[1];
+  na=1;
+  l2=n;
+  iw=n;
+
+  for(k1=0;k1<nf;k1++){
+    kh=nf-k1;
+    ip=ifac[kh+1];
+    l1=l2/ip;
+    ido=n/l2;
+    idl1=ido*l1;
+    iw-=(ip-1)*ido;
+    na=1-na;
+
+    if(ip!=4)goto L102;
+
+    ix2=iw+ido;
+    ix3=ix2+ido;
+    if(na!=0)
+      dradf4(ido,l1,ch,c,wa+iw-1,wa+ix2-1,wa+ix3-1);
+    else
+      dradf4(ido,l1,c,ch,wa+iw-1,wa+ix2-1,wa+ix3-1);
+    goto L110;
+
+ L102:
+    if(ip!=2)goto L104;
+    if(na!=0)goto L103;
+
+    dradf2(ido,l1,c,ch,wa+iw-1);
+    goto L110;
+
+  L103:
+    dradf2(ido,l1,ch,c,wa+iw-1);
+    goto L110;
+
+  L104:
+    if(ido==1)na=1-na;
+    if(na!=0)goto L109;
+
+    dradfg(ido,ip,l1,idl1,c,c,c,ch,ch,wa+iw-1);
+    na=1;
+    goto L110;
+
+  L109:
+    dradfg(ido,ip,l1,idl1,ch,ch,ch,c,c,wa+iw-1);
+    na=0;
+
+  L110:
+    l2=l1;
+  }
+
+  if(na==1)return;
+
+  for(i=0;i<n;i++)c[i]=ch[i];
+}
+
+static void dradb2(int ido,int l1,float *cc,float *ch,float *wa1){
+  int i,k,t0,t1,t2,t3,t4,t5,t6;
+  float ti2,tr2;
+
+  t0=l1*ido;
+  
+  t1=0;
+  t2=0;
+  t3=(ido<<1)-1;
+  for(k=0;k<l1;k++){
+    ch[t1]=cc[t2]+cc[t3+t2];
+    ch[t1+t0]=cc[t2]-cc[t3+t2];
+    t2=(t1+=ido)<<1;
+  }
+
+  if(ido<2)return;
+  if(ido==2)goto L105;
+
+  t1=0;
+  t2=0;
+  for(k=0;k<l1;k++){
+    t3=t1;
+    t5=(t4=t2)+(ido<<1);
+    t6=t0+t1;
+    for(i=2;i<ido;i+=2){
+      t3+=2;
+      t4+=2;
+      t5-=2;
+      t6+=2;
+      ch[t3-1]=cc[t4-1]+cc[t5-1];
+      tr2=cc[t4-1]-cc[t5-1];
+      ch[t3]=cc[t4]-cc[t5];
+      ti2=cc[t4]+cc[t5];
+      ch[t6-1]=wa1[i-2]*tr2-wa1[i-1]*ti2;
+      ch[t6]=wa1[i-2]*ti2+wa1[i-1]*tr2;
+    }
+    t2=(t1+=ido)<<1;
+  }
+
+  if(ido%2==1)return;
+
+L105:
+  t1=ido-1;
+  t2=ido-1;
+  for(k=0;k<l1;k++){
+    ch[t1]=cc[t2]+cc[t2];
+    ch[t1+t0]=-(cc[t2+1]+cc[t2+1]);
+    t1+=ido;
+    t2+=ido<<1;
+  }
+}
+
+static void dradb3(int ido,int l1,float *cc,float *ch,float *wa1,
+                          float *wa2){
+  static float taur = -.5f;
+  static float taui = .8660254037844386f;
+  int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
+  float ci2,ci3,di2,di3,cr2,cr3,dr2,dr3,ti2,tr2;
+  t0=l1*ido;
+
+  t1=0;
+  t2=t0<<1;
+  t3=ido<<1;
+  t4=ido+(ido<<1);
+  t5=0;
+  for(k=0;k<l1;k++){
+    tr2=cc[t3-1]+cc[t3-1];
+    cr2=cc[t5]+(taur*tr2);
+    ch[t1]=cc[t5]+tr2;
+    ci3=taui*(cc[t3]+cc[t3]);
+    ch[t1+t0]=cr2-ci3;
+    ch[t1+t2]=cr2+ci3;
+    t1+=ido;
+    t3+=t4;
+    t5+=t4;
+  }
+
+  if(ido==1)return;
+
+  t1=0;
+  t3=ido<<1;
+  for(k=0;k<l1;k++){
+    t7=t1+(t1<<1);
+    t6=(t5=t7+t3);
+    t8=t1;
+    t10=(t9=t1+t0)+t0;
+
+    for(i=2;i<ido;i+=2){
+      t5+=2;
+      t6-=2;
+      t7+=2;
+      t8+=2;
+      t9+=2;
+      t10+=2;
+      tr2=cc[t5-1]+cc[t6-1];
+      cr2=cc[t7-1]+(taur*tr2);
+      ch[t8-1]=cc[t7-1]+tr2;
+      ti2=cc[t5]-cc[t6];
+      ci2=cc[t7]+(taur*ti2);
+      ch[t8]=cc[t7]+ti2;
+      cr3=taui*(cc[t5-1]-cc[t6-1]);
+      ci3=taui*(cc[t5]+cc[t6]);
+      dr2=cr2-ci3;
+      dr3=cr2+ci3;
+      di2=ci2+cr3;
+      di3=ci2-cr3;
+      ch[t9-1]=wa1[i-2]*dr2-wa1[i-1]*di2;
+      ch[t9]=wa1[i-2]*di2+wa1[i-1]*dr2;
+      ch[t10-1]=wa2[i-2]*dr3-wa2[i-1]*di3;
+      ch[t10]=wa2[i-2]*di3+wa2[i-1]*dr3;
+    }
+    t1+=ido;
+  }
+}
+
+static void dradb4(int ido,int l1,float *cc,float *ch,float *wa1,
+			  float *wa2,float *wa3){
+  static float sqrt2=1.414213562373095f;
+  int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8;
+  float ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
+  t0=l1*ido;
+  
+  t1=0;
+  t2=ido<<2;
+  t3=0;
+  t6=ido<<1;
+  for(k=0;k<l1;k++){
+    t4=t3+t6;
+    t5=t1;
+    tr3=cc[t4-1]+cc[t4-1];
+    tr4=cc[t4]+cc[t4]; 
+    tr1=cc[t3]-cc[(t4+=t6)-1];
+    tr2=cc[t3]+cc[t4-1];
+    ch[t5]=tr2+tr3;
+    ch[t5+=t0]=tr1-tr4;
+    ch[t5+=t0]=tr2-tr3;
+    ch[t5+=t0]=tr1+tr4;
+    t1+=ido;
+    t3+=t2;
+  }
+
+  if(ido<2)return;
+  if(ido==2)goto L105;
+
+  t1=0;
+  for(k=0;k<l1;k++){
+    t5=(t4=(t3=(t2=t1<<2)+t6))+t6;
+    t7=t1;
+    for(i=2;i<ido;i+=2){
+      t2+=2;
+      t3+=2;
+      t4-=2;
+      t5-=2;
+      t7+=2;
+      ti1=cc[t2]+cc[t5];
+      ti2=cc[t2]-cc[t5];
+      ti3=cc[t3]-cc[t4];
+      tr4=cc[t3]+cc[t4];
+      tr1=cc[t2-1]-cc[t5-1];
+      tr2=cc[t2-1]+cc[t5-1];
+      ti4=cc[t3-1]-cc[t4-1];
+      tr3=cc[t3-1]+cc[t4-1];
+      ch[t7-1]=tr2+tr3;
+      cr3=tr2-tr3;
+      ch[t7]=ti2+ti3;
+      ci3=ti2-ti3;
+      cr2=tr1-tr4;
+      cr4=tr1+tr4;
+      ci2=ti1+ti4;
+      ci4=ti1-ti4;
+
+      ch[(t8=t7+t0)-1]=wa1[i-2]*cr2-wa1[i-1]*ci2;
+      ch[t8]=wa1[i-2]*ci2+wa1[i-1]*cr2;
+      ch[(t8+=t0)-1]=wa2[i-2]*cr3-wa2[i-1]*ci3;
+      ch[t8]=wa2[i-2]*ci3+wa2[i-1]*cr3;
+      ch[(t8+=t0)-1]=wa3[i-2]*cr4-wa3[i-1]*ci4;
+      ch[t8]=wa3[i-2]*ci4+wa3[i-1]*cr4;
+    }
+    t1+=ido;
+  }
+
+  if(ido%2 == 1)return;
+
+ L105:
+
+  t1=ido;
+  t2=ido<<2;
+  t3=ido-1;
+  t4=ido+(ido<<1);
+  for(k=0;k<l1;k++){
+    t5=t3;
+    ti1=cc[t1]+cc[t4];
+    ti2=cc[t4]-cc[t1];
+    tr1=cc[t1-1]-cc[t4-1];
+    tr2=cc[t1-1]+cc[t4-1];
+    ch[t5]=tr2+tr2;
+    ch[t5+=t0]=sqrt2*(tr1-ti1);
+    ch[t5+=t0]=ti2+ti2;
+    ch[t5+=t0]=-sqrt2*(tr1+ti1);
+
+    t3+=ido;
+    t1+=t2;
+    t4+=t2;
+  }
+}
+
+static void dradbg(int ido,int ip,int l1,int idl1,float *cc,float *c1,
+            float *c2,float *ch,float *ch2,float *wa){
+  static float tpi=6.283185307179586f;
+  int idij,ipph,i,j,k,l,ik,is,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,
+      t11,t12;
+  float dc2,ai1,ai2,ar1,ar2,ds2;
+  int nbd;
+  float dcp,arg,dsp,ar1h,ar2h;
+  int ipp2;
+
+  t10=ip*ido;
+  t0=l1*ido;
+  arg=tpi/(float)ip;
+  dcp=cos(arg);
+  dsp=sin(arg);
+  nbd=(ido-1)>>1;
+  ipp2=ip;
+  ipph=(ip+1)>>1;
+  if(ido<l1)goto L103;
+  
+  t1=0;
+  t2=0;
+  for(k=0;k<l1;k++){
+    t3=t1;
+    t4=t2;
+    for(i=0;i<ido;i++){
+      ch[t3]=cc[t4];
+      t3++;
+      t4++;
+    }
+    t1+=ido;
+    t2+=t10;
+  }
+  goto L106;
+
+ L103:
+  t1=0;
+  for(i=0;i<ido;i++){
+    t2=t1;
+    t3=t1;
+    for(k=0;k<l1;k++){
+      ch[t2]=cc[t3];
+      t2+=ido;
+      t3+=t10;
+    }
+    t1++;
+  }
+
+ L106:
+  t1=0;
+  t2=ipp2*t0;
+  t7=(t5=ido<<1);
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+    t6=t5;
+    for(k=0;k<l1;k++){
+      ch[t3]=cc[t6-1]+cc[t6-1];
+      ch[t4]=cc[t6]+cc[t6];
+      t3+=ido;
+      t4+=ido;
+      t6+=t10;
+    }
+    t5+=t7;
+  }
+
+  if (ido == 1)goto L116;
+  if(nbd<l1)goto L112;
+
+  t1=0;
+  t2=ipp2*t0;
+  t7=0;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+
+    t7+=(ido<<1);
+    t8=t7;
+    for(k=0;k<l1;k++){
+      t5=t3;
+      t6=t4;
+      t9=t8;
+      t11=t8;
+      for(i=2;i<ido;i+=2){
+        t5+=2;
+        t6+=2;
+        t9+=2;
+        t11-=2;
+        ch[t5-1]=cc[t9-1]+cc[t11-1];
+        ch[t6-1]=cc[t9-1]-cc[t11-1];
+        ch[t5]=cc[t9]-cc[t11];
+        ch[t6]=cc[t9]+cc[t11];
+      }
+      t3+=ido;
+      t4+=ido;
+      t8+=t10;
+    }
+  }
+  goto L116;
+
+ L112:
+  t1=0;
+  t2=ipp2*t0;
+  t7=0;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+    t7+=(ido<<1);
+    t8=t7;
+    t9=t7;
+    for(i=2;i<ido;i+=2){
+      t3+=2;
+      t4+=2;
+      t8+=2;
+      t9-=2;
+      t5=t3;
+      t6=t4;
+      t11=t8;
+      t12=t9;
+      for(k=0;k<l1;k++){
+        ch[t5-1]=cc[t11-1]+cc[t12-1];
+        ch[t6-1]=cc[t11-1]-cc[t12-1];
+        ch[t5]=cc[t11]-cc[t12];
+        ch[t6]=cc[t11]+cc[t12];
+        t5+=ido;
+        t6+=ido;
+        t11+=t10;
+        t12+=t10;
+      }
+    }
+  }
+
+L116:
+  ar1=1.f;
+  ai1=0.f;
+  t1=0;
+  t9=(t2=ipp2*idl1);
+  t3=(ip-1)*idl1;
+  for(l=1;l<ipph;l++){
+    t1+=idl1;
+    t2-=idl1;
+
+    ar1h=dcp*ar1-dsp*ai1;
+    ai1=dcp*ai1+dsp*ar1;
+    ar1=ar1h;
+    t4=t1;
+    t5=t2;
+    t6=0;
+    t7=idl1;
+    t8=t3;
+    for(ik=0;ik<idl1;ik++){
+      c2[t4++]=ch2[t6++]+ar1*ch2[t7++];
+      c2[t5++]=ai1*ch2[t8++];
+    }
+    dc2=ar1;
+    ds2=ai1;
+    ar2=ar1;
+    ai2=ai1;
+
+    t6=idl1;
+    t7=t9-idl1;
+    for(j=2;j<ipph;j++){
+      t6+=idl1;
+      t7-=idl1;
+      ar2h=dc2*ar2-ds2*ai2;
+      ai2=dc2*ai2+ds2*ar2;
+      ar2=ar2h;
+      t4=t1;
+      t5=t2;
+      t11=t6;
+      t12=t7;
+      for(ik=0;ik<idl1;ik++){
+        c2[t4++]+=ar2*ch2[t11++];
+        c2[t5++]+=ai2*ch2[t12++];
+      }
+    }
+  }
+
+  t1=0;
+  for(j=1;j<ipph;j++){
+    t1+=idl1;
+    t2=t1;
+    for(ik=0;ik<idl1;ik++)ch2[ik]+=ch2[t2++];
+  }
+
+  t1=0;
+  t2=ipp2*t0;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+    for(k=0;k<l1;k++){
+      ch[t3]=c1[t3]-c1[t4];
+      ch[t4]=c1[t3]+c1[t4];
+      t3+=ido;
+      t4+=ido;
+    }
+  }
+
+  if(ido==1)goto L132;
+  if(nbd<l1)goto L128;
+
+  t1=0;
+  t2=ipp2*t0;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+    for(k=0;k<l1;k++){
+      t5=t3;
+      t6=t4;
+      for(i=2;i<ido;i+=2){
+        t5+=2;
+        t6+=2;
+        ch[t5-1]=c1[t5-1]-c1[t6];
+        ch[t6-1]=c1[t5-1]+c1[t6];
+        ch[t5]=c1[t5]+c1[t6-1];
+        ch[t6]=c1[t5]-c1[t6-1];
+      }
+      t3+=ido;
+      t4+=ido;
+    }
+  }
+  goto L132;
+
+ L128:
+  t1=0;
+  t2=ipp2*t0;
+  for(j=1;j<ipph;j++){
+    t1+=t0;
+    t2-=t0;
+    t3=t1;
+    t4=t2;
+    for(i=2;i<ido;i+=2){
+      t3+=2;
+      t4+=2;
+      t5=t3;
+      t6=t4;
+      for(k=0;k<l1;k++){
+        ch[t5-1]=c1[t5-1]-c1[t6];
+        ch[t6-1]=c1[t5-1]+c1[t6];
+        ch[t5]=c1[t5]+c1[t6-1];
+        ch[t6]=c1[t5]-c1[t6-1];
+        t5+=ido;
+        t6+=ido;
+      }
+    }
+  }
+
+L132:
+  if(ido==1)return;
+
+  for(ik=0;ik<idl1;ik++)c2[ik]=ch2[ik];
+
+  t1=0;
+  for(j=1;j<ip;j++){
+    t2=(t1+=t0);
+    for(k=0;k<l1;k++){
+      c1[t2]=ch[t2];
+      t2+=ido;
+    }
+  }
+
+  if(nbd>l1)goto L139;
+
+  is= -ido-1;
+  t1=0;
+  for(j=1;j<ip;j++){
+    is+=ido;
+    t1+=t0;
+    idij=is;
+    t2=t1;
+    for(i=2;i<ido;i+=2){
+      t2+=2;
+      idij+=2;
+      t3=t2;
+      for(k=0;k<l1;k++){
+        c1[t3-1]=wa[idij-1]*ch[t3-1]-wa[idij]*ch[t3];
+        c1[t3]=wa[idij-1]*ch[t3]+wa[idij]*ch[t3-1];
+        t3+=ido;
+      }
+    }
+  }
+  return;
+
+ L139:
+  is= -ido-1;
+  t1=0;
+  for(j=1;j<ip;j++){
+    is+=ido;
+    t1+=t0;
+    t2=t1;
+    for(k=0;k<l1;k++){
+      idij=is;
+      t3=t2;
+      for(i=2;i<ido;i+=2){
+        idij+=2;
+        t3+=2;
+        c1[t3-1]=wa[idij-1]*ch[t3-1]-wa[idij]*ch[t3];
+        c1[t3]=wa[idij-1]*ch[t3]+wa[idij]*ch[t3-1];
+      }
+      t2+=ido;
+    }
+  }
+}
+
+static void drftb1(int n, float *c, float *ch, float *wa, int *ifac){
+  int i,k1,l1,l2;
+  int na;
+  int nf,ip,iw,ix2,ix3,ido,idl1;
+
+  nf=ifac[1];
+  na=0;
+  l1=1;
+  iw=1;
+
+  for(k1=0;k1<nf;k1++){
+    ip=ifac[k1 + 2];
+    l2=ip*l1;
+    ido=n/l2;
+    idl1=ido*l1;
+    if(ip!=4)goto L103;
+    ix2=iw+ido;
+    ix3=ix2+ido;
+
+    if(na!=0)
+      dradb4(ido,l1,ch,c,wa+iw-1,wa+ix2-1,wa+ix3-1);
+    else
+      dradb4(ido,l1,c,ch,wa+iw-1,wa+ix2-1,wa+ix3-1);
+    na=1-na;
+    goto L115;
+
+  L103:
+    if(ip!=2)goto L106;
+
+    if(na!=0)
+      dradb2(ido,l1,ch,c,wa+iw-1);
+    else
+      dradb2(ido,l1,c,ch,wa+iw-1);
+    na=1-na;
+    goto L115;
+
+  L106:
+    if(ip!=3)goto L109;
+
+    ix2=iw+ido;
+    if(na!=0)
+      dradb3(ido,l1,ch,c,wa+iw-1,wa+ix2-1);
+    else
+      dradb3(ido,l1,c,ch,wa+iw-1,wa+ix2-1);
+    na=1-na;
+    goto L115;
+
+  L109:
+/*    The radix five case can be translated later..... */
+/*    if(ip!=5)goto L112;
+
+    ix2=iw+ido;
+    ix3=ix2+ido;
+    ix4=ix3+ido;
+    if(na!=0)
+      dradb5(ido,l1,ch,c,wa+iw-1,wa+ix2-1,wa+ix3-1,wa+ix4-1);
+    else
+      dradb5(ido,l1,c,ch,wa+iw-1,wa+ix2-1,wa+ix3-1,wa+ix4-1);
+    na=1-na;
+    goto L115;
+
+  L112:*/
+    if(na!=0)
+      dradbg(ido,ip,l1,idl1,ch,ch,ch,c,c,wa+iw-1);
+    else
+      dradbg(ido,ip,l1,idl1,c,c,c,ch,ch,wa+iw-1);
+    if(ido==1)na=1-na;
+
+  L115:
+    l1=l2;
+    iw+=(ip-1)*ido;
+  }
+
+  if(na==0)return;
+
+  for(i=0;i<n;i++)c[i]=ch[i];
+}
+
+void spx_drft_forward(struct drft_lookup *l,float *data){
+  if(l->n==1)return;
+  drftf1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
+}
+
+void spx_drft_backward(struct drft_lookup *l,float *data){
+  if (l->n==1)return;
+  drftb1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
+}
+
+void spx_drft_init(struct drft_lookup *l,int n)
+{
+  l->n=n;
+  l->trigcache=(float*)speex_alloc(3*n*sizeof(*l->trigcache));
+  l->splitcache=(int*)speex_alloc(32*sizeof(*l->splitcache));
+  fdrffti(n, l->trigcache, l->splitcache);
+}
+
+void spx_drft_clear(struct drft_lookup *l)
+{
+  if(l)
+  {
+    if(l->trigcache)
+      speex_free(l->trigcache);
+    if(l->splitcache)
+      speex_free(l->splitcache);
+  }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/smallft.h b/pjmedia/src/pjmedia-codec/speex/smallft.h
new file mode 100644
index 00000000..4ef9e58c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/smallft.h
@@ -0,0 +1,46 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
+ * by the XIPHOPHORUS Company http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: fft transform
+ last mod: $Id$
+
+ ********************************************************************/
+/**
+   @file smallft.h
+   @brief Discrete Rotational Fourier Transform (DRFT)
+*/
+
+#ifndef _V_SMFT_H_
+#define _V_SMFT_H_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Discrete Rotational Fourier Transform lookup */
+struct drft_lookup{
+  int n;
+  float *trigcache;
+  int *splitcache;
+};
+
+extern void spx_drft_forward(struct drft_lookup *l,float *data);
+extern void spx_drft_backward(struct drft_lookup *l,float *data);
+extern void spx_drft_init(struct drft_lookup *l,int n);
+extern void spx_drft_clear(struct drft_lookup *l);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex.c b/pjmedia/src/pjmedia-codec/speex/speex.c
new file mode 100644
index 00000000..94829e61
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex.c
@@ -0,0 +1,268 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: speex.c
+
+   Basic Speex functions
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "modes.h"
+#include <math.h>
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#define MAX_IN_SAMPLES 640
+
+
+
+void *speex_encoder_init(const SpeexMode *mode)
+{
+   return mode->enc_init(mode);
+}
+
+void *speex_decoder_init(const SpeexMode *mode)
+{
+   return mode->dec_init(mode);
+}
+
+void speex_encoder_destroy(void *state)
+{
+   (*((SpeexMode**)state))->enc_destroy(state);
+}
+
+void speex_decoder_destroy(void *state)
+{
+   (*((SpeexMode**)state))->dec_destroy(state);
+}
+
+
+
+int speex_encode_native(void *state, spx_word16_t *in, SpeexBits *bits)
+{
+   return (*((SpeexMode**)state))->enc(state, in, bits);
+}
+
+int speex_decode_native(void *state, SpeexBits *bits, spx_word16_t *out)
+{
+   return (*((SpeexMode**)state))->dec(state, bits, out);
+}
+
+
+
+#ifdef FIXED_POINT
+
+int speex_encode(void *state, float *in, SpeexBits *bits)
+{
+   int i;
+   int N;
+   spx_int16_t short_in[MAX_IN_SAMPLES];
+   speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
+   for (i=0;i<N;i++)
+   {
+      if (in[i]>32767.f)
+         short_in[i] = 32767;
+      else if (in[i]<-32768.f)
+         short_in[i] = -32768;
+      else
+         short_in[i] = (spx_int16_t)floor(.5+in[i]);
+   }
+   return (*((SpeexMode**)state))->enc(state, short_in, bits);
+}
+
+int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits)
+{
+   SpeexMode *mode;
+   mode = *(SpeexMode**)state;
+   return (mode)->enc(state, in, bits);
+}
+
+int speex_decode(void *state, SpeexBits *bits, float *out)
+{
+   int i, ret;
+   int N;
+   spx_int16_t short_out[MAX_IN_SAMPLES];
+   speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
+   ret = (*((SpeexMode**)state))->dec(state, bits, short_out);
+   for (i=0;i<N;i++)
+      out[i] = short_out[i];
+   return ret;
+}
+
+int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out)
+{
+   SpeexMode *mode = *(SpeexMode**)state;
+   return (mode)->dec(state, bits, out);
+}
+
+#else
+
+int speex_encode(void *state, float *in, SpeexBits *bits)
+{
+   return (*((SpeexMode**)state))->enc(state, in, bits);
+}
+
+int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits)
+{
+   int i;
+   int N;
+   float float_in[MAX_IN_SAMPLES];
+   speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
+   for (i=0;i<N;i++)
+      float_in[i] = in[i];
+   return (*((SpeexMode**)state))->enc(state, float_in, bits);
+}
+
+int speex_decode(void *state, SpeexBits *bits, float *out)
+{
+   return (*((SpeexMode**)state))->dec(state, bits, out);
+}
+
+int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out)
+{
+   int i;
+   int N;
+   float float_out[MAX_IN_SAMPLES];
+   int ret;
+   speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
+   ret = (*((SpeexMode**)state))->dec(state, bits, float_out);
+   for (i=0;i<N;i++)
+   {
+      if (float_out[i]>32767.f)
+         out[i] = 32767;
+      else if (float_out[i]<-32768.f)
+         out[i] = -32768;
+      else
+         out[i] = (spx_int16_t)floor(.5+float_out[i]);
+   }
+   return ret;
+}
+#endif
+
+
+
+int speex_encoder_ctl(void *state, int request, void *ptr)
+{
+   return (*((SpeexMode**)state))->enc_ctl(state, request, ptr);
+}
+
+int speex_decoder_ctl(void *state, int request, void *ptr)
+{
+   return (*((SpeexMode**)state))->dec_ctl(state, request, ptr);
+}
+
+
+
+int nb_mode_query(const void *mode, int request, void *ptr)
+{
+   const SpeexNBMode *m = (const SpeexNBMode*)mode;
+   
+   switch (request)
+   {
+   case SPEEX_MODE_FRAME_SIZE:
+      *((int*)ptr)=m->frameSize;
+      break;
+   case SPEEX_SUBMODE_BITS_PER_FRAME:
+      if (*((int*)ptr)==0)
+         *((int*)ptr) = NB_SUBMODE_BITS+1;
+      else if (m->submodes[*((int*)ptr)]==NULL)
+         *((int*)ptr) = -1;
+      else
+         *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame;
+      break;
+   default:
+      speex_warning_int("Unknown nb_mode_query request: ", request);
+      return -1;
+   }
+   return 0;
+}
+
+int wb_mode_query(const void *mode, int request, void *ptr)
+{
+   const SpeexSBMode *m = (const SpeexSBMode*)mode;
+
+   switch (request)
+   {
+   case SPEEX_MODE_FRAME_SIZE:
+      *((int*)ptr)=2*m->frameSize;
+      break;
+   case SPEEX_SUBMODE_BITS_PER_FRAME:
+      if (*((int*)ptr)==0)
+         *((int*)ptr) = SB_SUBMODE_BITS+1;
+      else if (m->submodes[*((int*)ptr)]==NULL)
+         *((int*)ptr) = -1;
+      else
+         *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame;
+      break;
+   default:
+      speex_warning_int("Unknown wb_mode_query request: ", request);
+      return -1;
+   }
+   return 0;
+}
+
+
+int speex_lib_ctl(int request, void *ptr)
+{
+   switch (request)
+   {
+      case SPEEX_LIB_GET_MAJOR_VERSION:
+         *((int*)ptr) = SPEEX_MAJOR_VERSION;
+         break;
+      case SPEEX_LIB_GET_MINOR_VERSION:
+         *((int*)ptr) = SPEEX_MINOR_VERSION;
+         break;
+      case SPEEX_LIB_GET_MICRO_VERSION:
+         *((int*)ptr) = SPEEX_MICRO_VERSION;
+         break;
+      case SPEEX_LIB_GET_EXTRA_VERSION:
+         *((const char**)ptr) = SPEEX_EXTRA_VERSION;
+         break;
+      case SPEEX_LIB_GET_VERSION_STRING:
+         *((const char**)ptr) = SPEEX_VERSION;
+         break;
+      /*case SPEEX_LIB_SET_ALLOC_FUNC:
+         break;
+      case SPEEX_LIB_GET_ALLOC_FUNC:
+         break;
+      case SPEEX_LIB_SET_FREE_FUNC:
+         break;
+      case SPEEX_LIB_GET_FREE_FUNC:
+         break;*/
+      default:
+         speex_warning_int("Unknown wb_mode_query request: ", request);
+         return -1;
+   }
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/speex.h b/pjmedia/src/pjmedia-codec/speex/speex.h
new file mode 100644
index 00000000..0eb2b8a8
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex.h
@@ -0,0 +1,417 @@
+/* Copyright (C) 2002 Jean-Marc Valin*/
+/**
+  @file speex.h
+  @brief Describes the different modes of the codec
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_H
+#define SPEEX_H
+
+#include "speex/speex_bits.h"
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Values allowed for *ctl() requests */
+
+/** Set enhancement on/off (decoder only) */
+#define SPEEX_SET_ENH 0
+/** Get enhancement state (decoder only) */
+#define SPEEX_GET_ENH 1
+
+/*Would be SPEEX_SET_FRAME_SIZE, but it's (currently) invalid*/
+/** Obtain frame size used by encoder/decoder */
+#define SPEEX_GET_FRAME_SIZE 3
+
+/** Set quality value */
+#define SPEEX_SET_QUALITY 4
+/** Get current quality setting */
+/* #define SPEEX_GET_QUALITY 5 -- Doesn't make much sense, does it? */
+
+/** Set sub-mode to use */
+#define SPEEX_SET_MODE 6
+/** Get current sub-mode in use */
+#define SPEEX_GET_MODE 7
+
+/** Set low-band sub-mode to use (wideband only)*/
+#define SPEEX_SET_LOW_MODE 8
+/** Get current low-band mode in use (wideband only)*/
+#define SPEEX_GET_LOW_MODE 9
+
+/** Set high-band sub-mode to use (wideband only)*/
+#define SPEEX_SET_HIGH_MODE 10
+/** Get current high-band mode in use (wideband only)*/
+#define SPEEX_GET_HIGH_MODE 11
+
+/** Set VBR on (1) or off (0) */
+#define SPEEX_SET_VBR 12
+/** Get VBR status (1 for on, 0 for off) */
+#define SPEEX_GET_VBR 13
+
+/** Set quality value for VBR encoding (0-10) */
+#define SPEEX_SET_VBR_QUALITY 14
+/** Get current quality value for VBR encoding (0-10) */
+#define SPEEX_GET_VBR_QUALITY 15
+
+/** Set complexity of the encoder (0-10) */
+#define SPEEX_SET_COMPLEXITY 16
+/** Get current complexity of the encoder (0-10) */
+#define SPEEX_GET_COMPLEXITY 17
+
+/** Set bit-rate used by the encoder (or lower) */
+#define SPEEX_SET_BITRATE 18
+/** Get current bit-rate used by the encoder or decoder */
+#define SPEEX_GET_BITRATE 19
+
+/** Define a handler function for in-band Speex request*/
+#define SPEEX_SET_HANDLER 20
+
+/** Define a handler function for in-band user-defined request*/
+#define SPEEX_SET_USER_HANDLER 22
+
+/** Set sampling rate used in bit-rate computation */
+#define SPEEX_SET_SAMPLING_RATE 24
+/** Get sampling rate used in bit-rate computation */
+#define SPEEX_GET_SAMPLING_RATE 25
+
+/** Reset the encoder/decoder memories to zero*/
+#define SPEEX_RESET_STATE 26
+
+/** Get VBR info (mostly used internally) */
+#define SPEEX_GET_RELATIVE_QUALITY 29
+
+/** Set VAD status (1 for on, 0 for off) */
+#define SPEEX_SET_VAD 30
+
+/** Get VAD status (1 for on, 0 for off) */
+#define SPEEX_GET_VAD 31
+
+/** Set Average Bit-Rate (ABR) to n bits per seconds */
+#define SPEEX_SET_ABR 32
+/** Get Average Bit-Rate (ABR) setting (in bps) */
+#define SPEEX_GET_ABR 33
+
+/** Set DTX status (1 for on, 0 for off) */
+#define SPEEX_SET_DTX 34
+/** Get DTX status (1 for on, 0 for off) */
+#define SPEEX_GET_DTX 35
+
+/** Set submode encoding in each frame (1 for yes, 0 for no, setting to no breaks the standard) */
+#define SPEEX_SET_SUBMODE_ENCODING 36
+/** Get submode encoding in each frame */
+#define SPEEX_GET_SUBMODE_ENCODING 37
+
+/*#define SPEEX_SET_LOOKAHEAD 38*/
+/** Returns the lookahead used by Speex */
+#define SPEEX_GET_LOOKAHEAD 39
+
+/** Sets tuning for packet-loss concealment (expected loss rate) */
+#define SPEEX_SET_PLC_TUNING 40
+/** Gets tuning for PLC */
+#define SPEEX_GET_PLC_TUNING 41
+
+/* Used internally, not to be used in applications */
+/** Used internally*/
+#define SPEEX_GET_PI_GAIN 100
+/** Used internally*/
+#define SPEEX_GET_EXC     101
+/** Used internally*/
+#define SPEEX_GET_INNOV   102
+/** Used internally*/
+#define SPEEX_GET_DTX_STATUS   103
+
+
+/* Preserving compatibility:*/
+/** Equivalent to SPEEX_SET_ENH */
+#define SPEEX_SET_PF 0
+/** Equivalent to SPEEX_GET_ENH */
+#define SPEEX_GET_PF 1
+
+
+
+
+/* Values allowed for mode queries */
+/** Query the frame size of a mode */
+#define SPEEX_MODE_FRAME_SIZE 0
+
+/** Query the size of an encoded frame for a particular sub-mode */
+#define SPEEX_SUBMODE_BITS_PER_FRAME 1
+
+
+
+/** Get major Speex version */
+#define SPEEX_LIB_GET_MAJOR_VERSION 1
+/** Get minor Speex version */
+#define SPEEX_LIB_GET_MINOR_VERSION 3
+/** Get micro Speex version */
+#define SPEEX_LIB_GET_MICRO_VERSION 5
+/** Get extra Speex version */
+#define SPEEX_LIB_GET_EXTRA_VERSION 7
+/** Get Speex version string */
+#define SPEEX_LIB_GET_VERSION_STRING 9
+
+/*#define SPEEX_LIB_SET_ALLOC_FUNC 10
+#define SPEEX_LIB_GET_ALLOC_FUNC 11
+#define SPEEX_LIB_SET_FREE_FUNC 12
+#define SPEEX_LIB_GET_FREE_FUNC 13
+
+#define SPEEX_LIB_SET_WARNING_FUNC 14
+#define SPEEX_LIB_GET_WARNING_FUNC 15
+#define SPEEX_LIB_SET_ERROR_FUNC 16
+#define SPEEX_LIB_GET_ERROR_FUNC 17
+*/
+
+/** Number of defined modes in Speex */
+#define SPEEX_NB_MODES 3
+
+/** modeID for the defined narrowband mode */
+#define SPEEX_MODEID_NB 0
+
+/** modeID for the defined wideband mode */
+#define SPEEX_MODEID_WB 1
+
+/** modeID for the defined ultra-wideband mode */
+#define SPEEX_MODEID_UWB 2
+
+#ifdef EPIC_48K
+/** modeID for the Epic 48K mode */
+#define SPEEX_MODEID_NB_48K 1000
+#endif
+
+struct SpeexMode;
+
+
+/* Prototypes for mode function pointers */
+
+/** Encoder state initialization function */
+typedef void *(*encoder_init_func)(const struct SpeexMode *mode);
+
+/** Encoder state destruction function */
+typedef void (*encoder_destroy_func)(void *st);
+
+/** Main encoding function */
+typedef int (*encode_func)(void *state, void *in, SpeexBits *bits);
+
+/** Function for controlling the encoder options */
+typedef int (*encoder_ctl_func)(void *state, int request, void *ptr);
+
+/** Decoder state initialization function */
+typedef void *(*decoder_init_func)(const struct SpeexMode *mode);
+
+/** Decoder state destruction function */
+typedef void (*decoder_destroy_func)(void *st);
+
+/** Main decoding function */
+typedef int  (*decode_func)(void *state, SpeexBits *bits, void *out);
+
+/** Function for controlling the decoder options */
+typedef int (*decoder_ctl_func)(void *state, int request, void *ptr);
+
+
+/** Query function for a mode */
+typedef int (*mode_query_func)(const void *mode, int request, void *ptr);
+
+/** Struct defining a Speex mode */ 
+typedef struct SpeexMode {
+   /** Pointer to the low-level mode data */
+   const void *mode;
+
+   /** Pointer to the mode query function */
+   mode_query_func query;
+   
+   /** The name of the mode (you should not rely on this to identify the mode)*/
+   const char *modeName;
+
+   /**ID of the mode*/
+   int modeID;
+
+   /**Version number of the bitstream (incremented every time we break
+    bitstream compatibility*/
+   int bitstream_version;
+
+   /** Pointer to encoder initialization function */
+   encoder_init_func enc_init;
+
+   /** Pointer to encoder destruction function */
+   encoder_destroy_func enc_destroy;
+
+   /** Pointer to frame encoding function */
+   encode_func enc;
+
+   /** Pointer to decoder initialization function */
+   decoder_init_func dec_init;
+
+   /** Pointer to decoder destruction function */
+   decoder_destroy_func dec_destroy;
+
+   /** Pointer to frame decoding function */
+   decode_func dec;
+
+   /** ioctl-like requests for encoder */
+   encoder_ctl_func enc_ctl;
+
+   /** ioctl-like requests for decoder */
+   decoder_ctl_func dec_ctl;
+
+} SpeexMode;
+
+/**
+ * Returns a handle to a newly created Speex encoder state structure. For now, 
+ * the "mode" argument can be &nb_mode or &wb_mode . In the future, more modes 
+ * may be added. Note that for now if you have more than one channels to 
+ * encode, you need one state per channel.
+ *
+ * @param mode The mode to use (either speex_nb_mode or speex_wb.mode) 
+ * @return A newly created encoder
+ */
+void *speex_encoder_init(const SpeexMode *mode);
+
+/** Frees all resources associated to an existing Speex encoder state. 
+ * @param state Encoder state to be destroyed */
+void speex_encoder_destroy(void *state);
+
+/** Uses an existing encoder state to encode one frame of speech pointed to by
+    "in". The encoded bit-stream is saved in "bits".
+ @param state Encoder state
+ @param in Frame that will be encoded with a +-2^15 range
+ @param bits Bit-stream where the data will be written
+ @return 0 if frame needs not be transmitted (DTX only), 1 otherwise
+ */
+int speex_encode(void *state, float *in, SpeexBits *bits);
+
+/** Uses an existing encoder state to encode one frame of speech pointed to by
+    "in". The encoded bit-stream is saved in "bits".
+ @param state Encoder state
+ @param in Frame that will be encoded with a +-2^15 range
+ @param bits Bit-stream where the data will be written
+ @return 0 if frame needs not be transmitted (DTX only), 1 otherwise
+ */
+int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits);
+
+/** Used like the ioctl function to control the encoder parameters
+ *
+ * @param state Encoder state
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+ */
+int speex_encoder_ctl(void *state, int request, void *ptr);
+
+
+/** Returns a handle to a newly created decoder state structure. For now, 
+ * the mode argument can be &nb_mode or &wb_mode . In the future, more modes
+ * may be added.  Note that for now if you have more than one channels to
+ * decode, you need one state per channel.
+ *
+ * @param mode Speex mode (one of speex_nb_mode or speex_wb_mode)
+ * @return A newly created decoder state
+ */ 
+void *speex_decoder_init(const SpeexMode *mode);
+
+/** Frees all resources associated to an existing decoder state.
+ *
+ * @param state State to be destroyed
+ */
+void speex_decoder_destroy(void *state);
+
+/** Uses an existing decoder state to decode one frame of speech from
+ * bit-stream bits. The output speech is saved written to out.
+ *
+ * @param state Decoder state
+ * @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
+ * @param out Where to write the decoded frame
+ * @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
+ */
+int speex_decode(void *state, SpeexBits *bits, float *out);
+
+/** Uses an existing decoder state to decode one frame of speech from
+ * bit-stream bits. The output speech is saved written to out.
+ *
+ * @param state Decoder state
+ * @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
+ * @param out Where to write the decoded frame
+ * @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
+ */
+int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out);
+
+/** Used like the ioctl function to control the encoder parameters
+ *
+ * @param state Decoder state
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+ */
+int speex_decoder_ctl(void *state, int request, void *ptr);
+
+
+/** Query function for mode information
+ *
+ * @param mode Speex mode
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ */
+int speex_mode_query(const SpeexMode *mode, int request, void *ptr);
+
+/** Functions for controlling the behavior of libspeex
+ * @param request ioctl-type request (one of the SPEEX_LIB_* macros)
+ * @param ptr Data exchanged to-from function
+ */
+int speex_lib_ctl(int request, void *ptr);
+
+/** Default narrowband mode */
+extern const SpeexMode speex_nb_mode;
+
+/** Default wideband mode */
+extern const SpeexMode speex_wb_mode;
+
+/** Default "ultra-wideband" mode */
+extern const SpeexMode speex_uwb_mode;
+
+#ifdef EPIC_48K
+/** 4.8 kbps narrowband mode */
+extern const SpeexMode speex_nb_48k_mode;
+#endif
+
+/** List of all modes available */
+extern const SpeexMode * const speex_mode_list[SPEEX_NB_MODES];
+
+/** Obtain one of the modes available */
+const SpeexMode * speex_lib_get_mode (int mode);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_bits.h b/pjmedia/src/pjmedia-codec/speex/speex_bits.h
new file mode 100644
index 00000000..b77202fd
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_bits.h
@@ -0,0 +1,151 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_bits.h
+   @brief Handles bit packing/unpacking
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef BITS_H
+#define BITS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Bit-packing data structure representing (part of) a bit-stream. */
+typedef struct SpeexBits {
+   char *chars;   /**< "raw" data */
+   int   nbBits;  /**< Total number of bits stored in the stream*/
+   int   charPtr; /**< Position of the byte "cursor" */
+   int   bitPtr;  /**< Position of the bit "cursor" within the current char */
+   int   owner;   /**< Does the struct "own" the "raw" buffer (member "chars") */
+   int   overflow;/**< Set to one if we try to read past the valid data */
+   int   buf_size;/**< Allocated size for buffer */
+   int   reserved1; /**< Reserved for future use */
+   void *reserved2; /**< Reserved for future use */
+} SpeexBits;
+
+/** Initializes and allocates resources for a SpeexBits struct */
+void speex_bits_init(SpeexBits *bits);
+
+/** Initializes SpeexBits struct using a pre-allocated buffer*/
+void speex_bits_init_buffer(SpeexBits *bits, void *buff, int buf_size);
+
+/** Frees all resources associated to a SpeexBits struct. Right now this does nothing since no resources are allocated, but this could change in the future.*/
+void speex_bits_destroy(SpeexBits *bits);
+
+/** Resets bits to initial value (just after initialization, erasing content)*/
+void speex_bits_reset(SpeexBits *bits);
+
+/** Rewind the bit-stream to the beginning (ready for read) without erasing the content */
+void speex_bits_rewind(SpeexBits *bits);
+
+/** Initializes the bit-stream from the data in an area of memory */
+void speex_bits_read_from(SpeexBits *bits, char *bytes, int len);
+
+/** Append bytes to the bit-stream
+ * @param bits Bit-stream to operate on
+ * @param bytes pointer to the bytes what will be appended
+ * @param len Number of bytes of append
+ */
+void speex_bits_read_whole_bytes(SpeexBits *bits, char *bytes, int len);
+
+/** Write the content of a bit-stream to an area of memory */
+int speex_bits_write(SpeexBits *bits, char *bytes, int max_len);
+
+/** Like speex_bits_write, but writes only the complete bytes in the stream. Also removes the written bytes from the stream */
+int speex_bits_write_whole_bytes(SpeexBits *bits, char *bytes, int max_len);
+
+/** Append bits to the bit-stream
+ * @param bits Bit-stream to operate on
+ * @param data Value to append as integer
+ * @param nbBits number of bits to consider in "data"
+ */
+void speex_bits_pack(SpeexBits *bits, int data, int nbBits);
+
+/** Interpret the next bits in the bit-stream as a signed integer
+ *
+ * @param bits Bit-stream to operate on
+ * @param nbBits Number of bits to interpret
+ * @return A signed integer represented by the bits read
+ */
+int speex_bits_unpack_signed(SpeexBits *bits, int nbBits);
+
+/** Interpret the next bits in the bit-stream as an unsigned integer
+ *
+ * @param bits Bit-stream to operate on
+ * @param nbBits Number of bits to interpret
+ * @return An unsigned integer represented by the bits read
+ */
+unsigned int speex_bits_unpack_unsigned(SpeexBits *bits, int nbBits);
+
+/** Returns the number of bytes in the bit-stream, including the last one even if it is not "full"
+ *
+ * @param bits Bit-stream to operate on
+ * @return Number of bytes in the stream
+ */
+int speex_bits_nbytes(SpeexBits *bits);
+
+/** Same as speex_bits_unpack_unsigned, but without modifying the cursor position */
+unsigned int speex_bits_peek_unsigned(SpeexBits *bits, int nbBits);
+
+/** Get the value of the next bit in the stream, without modifying the
+ * "cursor" position 
+ * 
+ * @param bits Bit-stream to operate on
+ */
+int speex_bits_peek(SpeexBits *bits);
+
+/** Advances the position of the "bit cursor" in the stream 
+ *
+ * @param bits Bit-stream to operate on
+ * @param n Number of bits to advance
+ */
+void speex_bits_advance(SpeexBits *bits, int n);
+
+/** Returns the number of bits remaining to be read in a stream
+ *
+ * @param bits Bit-stream to operate on
+ */
+int speex_bits_remaining(SpeexBits *bits);
+
+/** Insert a terminator so that the data can be sent as a packet while auto-detecting 
+ * the number of frames in each packet 
+ *
+ * @param bits Bit-stream to operate on
+ */
+void speex_bits_insert_terminator(SpeexBits *bits);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_callbacks.c b/pjmedia/src/pjmedia-codec/speex/speex_callbacks.c
new file mode 100644
index 00000000..0b991887
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_callbacks.c
@@ -0,0 +1,140 @@
+/* Copyright (C) 2002 Jean-Marc Valin
+   File speex_callbacks.c
+   Callback handling and in-band signalling
+
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex_callbacks.h>
+#include "misc.h"
+
+int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state)
+{
+   int id;
+   SpeexCallback *callback;
+   /*speex_bits_advance(bits, 5);*/
+   id=speex_bits_unpack_unsigned(bits, 4);
+   callback = callback_list+id;
+
+   if (callback->func)
+   {
+      return callback->func(bits, state, callback->data);
+   } else
+      /*If callback is not registered, skip the right number of bits*/
+   {
+      int adv;
+      if (id<2)
+         adv = 1;
+      else if (id<8)
+         adv = 4;
+      else if (id<10)
+         adv = 8;
+      else if (id<12)
+         adv = 16;
+      else if (id<14)
+         adv = 32;
+      else 
+         adv = 64;
+      speex_bits_advance(bits, adv);
+   }
+   return 0;
+}
+
+int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int m;
+   m = speex_bits_unpack_unsigned(bits, 4);
+   speex_encoder_ctl(data, SPEEX_SET_MODE, &m);
+   return 0;
+}
+
+int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int m;
+   m = speex_bits_unpack_unsigned(bits, 4);
+   speex_encoder_ctl(data, SPEEX_SET_LOW_MODE, &m);
+   return 0;
+}
+
+int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int m;
+   m = speex_bits_unpack_unsigned(bits, 4);
+   speex_encoder_ctl(data, SPEEX_SET_HIGH_MODE, &m);
+   return 0;
+}
+
+int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int vbr;
+   vbr = speex_bits_unpack_unsigned(bits, 1);
+   speex_encoder_ctl(data, SPEEX_SET_VBR, &vbr);
+   return 0;
+}
+
+int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int enh;
+   enh = speex_bits_unpack_unsigned(bits, 1);
+   speex_decoder_ctl(data, SPEEX_SET_ENH, &enh);
+   return 0;
+}
+
+int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   int qual;
+   qual = speex_bits_unpack_unsigned(bits, 4);
+   speex_encoder_ctl(data, SPEEX_SET_VBR_QUALITY, &qual);
+   return 0;
+}
+
+
+int speex_std_char_handler(SpeexBits *bits, void *state, void *data)
+{
+   unsigned char ch;
+   ch = speex_bits_unpack_unsigned(bits, 8);
+   _speex_putc(ch, data);
+   /*printf("speex_std_char_handler ch=%x\n", ch);*/
+   return 0;
+}
+
+
+
+/* Default handler for user callbacks: skip it */
+int speex_default_user_handler(SpeexBits *bits, void *state, void *data)
+{
+   int req_size = speex_bits_unpack_unsigned(bits, 4);
+   speex_bits_advance(bits, 5+8*req_size);
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_callbacks.h b/pjmedia/src/pjmedia-codec/speex/speex_callbacks.h
new file mode 100644
index 00000000..f6334f22
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_callbacks.h
@@ -0,0 +1,128 @@
+/* Copyright (C) 2002 Jean-Marc Valin*/
+/**
+  @file speex_callbacks.h
+  @brief Describes callback handling and in-band signalling
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_CALLBACKS_H
+#define SPEEX_CALLBACKS_H
+
+#include "speex.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Total number of callbacks */
+#define SPEEX_MAX_CALLBACKS 16
+
+/* Describes all the in-band requests */
+
+/*These are 1-bit requests*/
+/** Request for perceptual enhancement (1 for on, 0 for off) */
+#define SPEEX_INBAND_ENH_REQUEST         0
+/** Reserved */
+#define SPEEX_INBAND_RESERVED1           1
+
+/*These are 4-bit requests*/
+/** Request for a mode change */
+#define SPEEX_INBAND_MODE_REQUEST        2
+/** Request for a low mode change */
+#define SPEEX_INBAND_LOW_MODE_REQUEST    3
+/** Request for a high mode change */
+#define SPEEX_INBAND_HIGH_MODE_REQUEST   4
+/** Request for VBR (1 on, 0 off) */
+#define SPEEX_INBAND_VBR_QUALITY_REQUEST 5
+/** Request to be sent acknowledge */
+#define SPEEX_INBAND_ACKNOWLEDGE_REQUEST 6
+/** Request for VBR (1 for on, 0 for off) */
+#define SPEEX_INBAND_VBR_REQUEST         7
+
+/*These are 8-bit requests*/
+/** Send a character in-band */
+#define SPEEX_INBAND_CHAR                8
+/** Intensity stereo information */
+#define SPEEX_INBAND_STEREO              9
+
+/*These are 16-bit requests*/
+/** Transmit max bit-rate allowed */
+#define SPEEX_INBAND_MAX_BITRATE         10
+
+/*These are 32-bit requests*/
+/** Acknowledge packet reception */
+#define SPEEX_INBAND_ACKNOWLEDGE         12
+
+/** Callback function type */
+typedef int (*speex_callback_func)(SpeexBits *bits, void *state, void *data);
+
+/** Callback information */
+typedef struct SpeexCallback {
+   int callback_id;             /**< ID associated to the callback */
+   speex_callback_func func;    /**< Callback handler function */
+   void *data;                  /**< Data that will be sent to the handler */
+   void *reserved1;             /**< Reserved for future use */
+   int   reserved2;             /**< Reserved for future use */
+} SpeexCallback;
+
+/** Handle in-band request */
+int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state);
+
+/** Standard handler for mode request (change mode, no questions asked) */
+int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for high mode request (change high mode, no questions asked) */
+int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for in-band characters (write to stderr) */
+int speex_std_char_handler(SpeexBits *bits, void *state, void *data);
+
+/** Default handler for user-defined requests: in this case, just ignore */
+int speex_default_user_handler(SpeexBits *bits, void *state, void *data);
+
+
+
+
+int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data);
+
+int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data);
+
+int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_echo.h b/pjmedia/src/pjmedia-codec/speex/speex_echo.h
new file mode 100644
index 00000000..1962a560
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_echo.h
@@ -0,0 +1,82 @@
+/* Copyright (C) Jean-Marc Valin */
+/**
+   @file speex_echo.h
+   @brief Echo cancellation
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SPEEX_ECHO_H
+#define SPEEX_ECHO_H
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Obtain frame size used by the AEC */
+#define SPEEX_ECHO_GET_FRAME_SIZE 3
+
+/** Set sampling rate */
+#define SPEEX_ECHO_SET_SAMPLING_RATE 24
+/** Get sampling rate */
+#define SPEEX_ECHO_GET_SAMPLING_RATE 25
+
+
+/*struct drft_lookup;*/
+struct SpeexEchoState_;
+
+typedef struct SpeexEchoState_ SpeexEchoState;
+
+/** Creates a new echo canceller state */
+SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length);
+
+/** Destroys an echo canceller state */
+void speex_echo_state_destroy(SpeexEchoState *st);
+
+/** Performs echo cancellation a frame */
+void speex_echo_cancel(SpeexEchoState *st, short *ref, short *echo, short *out, spx_int32_t *Y);
+
+/** Reset the echo canceller state */
+void speex_echo_state_reset(SpeexEchoState *st);
+
+/** Used like the ioctl function to control the echo canceller parameters
+ *
+ * @param state Encoder state
+ * @param request ioctl-type request (one of the SPEEX_ECHO_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+ */
+int speex_echo_ctl(SpeexEchoState *st, int request, void *ptr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_header.c b/pjmedia/src/pjmedia-codec/speex/speex_header.c
new file mode 100644
index 00000000..7fc2f5aa
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_header.c
@@ -0,0 +1,166 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: speex_header.c
+   Describes the Speex header
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "misc.h"
+#include <speex/speex_header.h>
+#include <speex/speex.h>
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#define ENDIAN_SWITCH(x) {x=le_int(x);}
+
+
+/*
+typedef struct SpeexHeader {
+   char speex_string[8];
+   char speex_version[SPEEX_HEADER_VERSION_LENGTH];
+   int speex_version_id;
+   int header_size;
+   int rate;
+   int mode;
+   int mode_bitstream_version;
+   int nb_channels;
+   int bitrate;
+   int frame_size;
+   int vbr;
+   int frames_per_packet;
+   int extra_headers;
+   int reserved1;
+   int reserved2;
+} SpeexHeader;
+*/
+
+void speex_init_header(SpeexHeader *header, int rate, int nb_channels, const SpeexMode *m)
+{
+   int i;
+   const char *h="Speex   ";
+   /*
+   strncpy(header->speex_string, "Speex   ", 8);
+   strncpy(header->speex_version, SPEEX_VERSION, SPEEX_HEADER_VERSION_LENGTH-1);
+   header->speex_version[SPEEX_HEADER_VERSION_LENGTH-1]=0;
+   */
+   for (i=0;i<8;i++)
+      header->speex_string[i]=h[i];
+   for (i=0;i<SPEEX_HEADER_VERSION_LENGTH-1 && SPEEX_VERSION[i];i++)
+      header->speex_version[i]=SPEEX_VERSION[i];
+   for (;i<SPEEX_HEADER_VERSION_LENGTH;i++)
+      header->speex_version[i]=0;
+   
+   header->speex_version_id = 1;
+   header->header_size = sizeof(SpeexHeader);
+   
+   header->rate = rate;
+   header->mode = m->modeID;
+   header->mode_bitstream_version = m->bitstream_version;
+   if (m->modeID<0)
+      speex_warning("This mode is meant to be used alone");
+   header->nb_channels = nb_channels;
+   header->bitrate = -1;
+   speex_mode_query(m, SPEEX_MODE_FRAME_SIZE, &header->frame_size);
+   header->vbr = 0;
+   
+   header->frames_per_packet = 0;
+   header->extra_headers = 0;
+   header->reserved1 = 0;
+   header->reserved2 = 0;
+}
+
+char *speex_header_to_packet(SpeexHeader *header, int *size)
+{
+   SpeexHeader *le_header;
+   le_header = (SpeexHeader*)speex_alloc(sizeof(SpeexHeader));
+   
+   speex_move(le_header, header, sizeof(SpeexHeader));
+   
+   /*Make sure everything is now little-endian*/
+   ENDIAN_SWITCH(le_header->speex_version_id);
+   ENDIAN_SWITCH(le_header->header_size);
+   ENDIAN_SWITCH(le_header->rate);
+   ENDIAN_SWITCH(le_header->mode);
+   ENDIAN_SWITCH(le_header->mode_bitstream_version);
+   ENDIAN_SWITCH(le_header->nb_channels);
+   ENDIAN_SWITCH(le_header->bitrate);
+   ENDIAN_SWITCH(le_header->frame_size);
+   ENDIAN_SWITCH(le_header->vbr);
+   ENDIAN_SWITCH(le_header->frames_per_packet);
+   ENDIAN_SWITCH(le_header->extra_headers);
+
+   *size = sizeof(SpeexHeader);
+   return (char *)le_header;
+}
+
+SpeexHeader *speex_packet_to_header(char *packet, int size)
+{
+   int i;
+   SpeexHeader *le_header;
+   const char *h = "Speex   ";
+   for (i=0;i<8;i++)
+      if (packet[i]!=h[i])
+      {
+         speex_warning ("This doesn't look like a Speex file");
+         return NULL;
+      }
+   
+   /*FIXME: Do we allow larger headers?*/
+   if (size < (int)sizeof(SpeexHeader))
+   {
+      speex_warning("Speex header too small");
+      return NULL;
+   }
+   
+   le_header = (SpeexHeader*)speex_alloc(sizeof(SpeexHeader));
+   
+   speex_move(le_header, packet, sizeof(SpeexHeader));
+   
+   /*Make sure everything is converted correctly from little-endian*/
+   ENDIAN_SWITCH(le_header->speex_version_id);
+   ENDIAN_SWITCH(le_header->header_size);
+   ENDIAN_SWITCH(le_header->rate);
+   ENDIAN_SWITCH(le_header->mode);
+   ENDIAN_SWITCH(le_header->mode_bitstream_version);
+   ENDIAN_SWITCH(le_header->nb_channels);
+   ENDIAN_SWITCH(le_header->bitrate);
+   ENDIAN_SWITCH(le_header->frame_size);
+   ENDIAN_SWITCH(le_header->vbr);
+   ENDIAN_SWITCH(le_header->frames_per_packet);
+   ENDIAN_SWITCH(le_header->extra_headers);
+
+   return le_header;
+
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_header.h b/pjmedia/src/pjmedia-codec/speex/speex_header.h
new file mode 100644
index 00000000..32fb81f6
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_header.h
@@ -0,0 +1,86 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_header.h
+   @brief Describes the Speex header
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+
+#ifndef SPEEX_HEADER_H
+#define SPEEX_HEADER_H
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct SpeexMode;
+
+#define SPEEX_HEADER_STRING_LENGTH 8
+
+/** Maximum number of characters for encoding the Speex version number in the header */
+#define SPEEX_HEADER_VERSION_LENGTH 20
+
+/** Speex header info for file-based formats */
+typedef struct SpeexHeader {
+   char speex_string[SPEEX_HEADER_STRING_LENGTH];   /**< Identifies a Speex bit-stream, always set to "Speex   " */
+   char speex_version[SPEEX_HEADER_VERSION_LENGTH]; /**< Speex version */ 
+   spx_int32_t speex_version_id;       /**< Version for Speex (for checking compatibility) */
+   spx_int32_t header_size;            /**< Total size of the header ( sizeof(SpeexHeader) ) */
+   spx_int32_t rate;                   /**< Sampling rate used */
+   spx_int32_t mode;                   /**< Mode used (0 for narrowband, 1 for wideband) */
+   spx_int32_t mode_bitstream_version; /**< Version ID of the bit-stream */
+   spx_int32_t nb_channels;            /**< Number of channels encoded */
+   spx_int32_t bitrate;                /**< Bit-rate used */
+   spx_int32_t frame_size;             /**< Size of frames */
+   spx_int32_t vbr;                    /**< 1 for a VBR encoding, 0 otherwise */
+   spx_int32_t frames_per_packet;      /**< Number of frames stored per Ogg packet */
+   spx_int32_t extra_headers;          /**< Number of additional headers after the comments */
+   spx_int32_t reserved1;              /**< Reserved for future use, must be zero */
+   spx_int32_t reserved2;              /**< Reserved for future use, must be zero */
+} SpeexHeader;
+
+/** Initializes a SpeexHeader using basic information */
+void speex_init_header(SpeexHeader *header, int rate, int nb_channels, const struct SpeexMode *m);
+
+/** Creates the header packet from the header itself (mostly involves endianness conversion) */
+char *speex_header_to_packet(SpeexHeader *header, int *size);
+
+/** Creates a SpeexHeader from a packet */
+SpeexHeader *speex_packet_to_header(char *packet, int size);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_jitter.h b/pjmedia/src/pjmedia-codec/speex/speex_jitter.h
new file mode 100644
index 00000000..31b5c53c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_jitter.h
@@ -0,0 +1,94 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_jitter.h
+   @brief Adaptive jitter buffer for Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_JITTER_H
+#define SPEEX_JITTER_H
+
+#include "speex.h"
+#include "speex_bits.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SPEEX_JITTER_MAX_PACKET_SIZE 1500 /**< Maximum number of bytes per packet         */
+#define SPEEX_JITTER_MAX_BUFFER_SIZE 20   /**< Maximum number of packets in jitter buffer */
+
+#define MAX_MARGIN 12  /**< Number of bins in margin histogram */
+
+/** Speex jitter-buffer state. */
+typedef struct SpeexJitter {
+   int buffer_size;                                                       /**< Buffer size                         */
+   int pointer_timestamp;                                                 /**< Pointer timestamp                   */
+
+   SpeexBits current_packet;                                              /**< Current Speex packet                */
+   int valid_bits;                                                        /**< True if Speex bits are valid        */
+
+   char buf[SPEEX_JITTER_MAX_BUFFER_SIZE][SPEEX_JITTER_MAX_PACKET_SIZE];  /**< Buffer of packets                   */
+   int timestamp[SPEEX_JITTER_MAX_BUFFER_SIZE];                           /**< Timestamp of packet                 */
+   int len[SPEEX_JITTER_MAX_BUFFER_SIZE];                                 /**< Number of bytes in packet           */
+
+   void *dec;                                                             /**< Pointer to Speex decoder            */
+   int frame_size;                                                        /**< Frame size of Speex decoder         */
+   int frame_time;                                                        /**< Frame time in [ms] of Speex decoder */
+   int reset_state;                                                       /**< True if Speex state was reset       */
+   
+   int lost_count;                                                        /**< Number of lost packets              */
+   float shortterm_margin[MAX_MARGIN];                                    /**< Short term margins                  */
+   float longterm_margin[MAX_MARGIN];                                     /**< Long term margins                   */
+   float loss_rate;                                                       /**< Loss rate                           */
+} SpeexJitter;
+
+/** Initialise jitter buffer */
+void speex_jitter_init(SpeexJitter *jitter, void *decoder, int sampling_rate);
+
+/** Destroy jitter buffer */
+void speex_jitter_destroy(SpeexJitter *jitter);
+
+/** Put one packet into the jitter buffer */
+void speex_jitter_put(SpeexJitter *jitter, char *packet, int len, int timestamp);
+
+/** Get one packet from the jitter buffer */
+void speex_jitter_get(SpeexJitter *jitter, short *out, int *current_timestamp);
+
+/** Get pointer timestamp of jitter buffer */
+int speex_jitter_get_pointer_timestamp(SpeexJitter *jitter);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h b/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h
new file mode 100644
index 00000000..5bb3a2c4
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_preprocess.h
@@ -0,0 +1,171 @@
+/* Copyright (C) 2003 Epic Games
+   Written by Jean-Marc Valin */
+/**
+   @file speex_preprocess.h
+   @brief Speex preprocessor
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SPEEX_PREPROCESS_H
+#define SPEEX_PREPROCESS_H
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct drft_lookup;
+
+/** Speex pre-processor state. */
+typedef struct SpeexPreprocessState {
+   int    frame_size;        /**< Number of samples processed each time */
+   int    ps_size;           /**< Number of points in the power spectrum */
+   int    sampling_rate;     /**< Sampling rate of the input/output */
+   
+   /* parameters */
+   int    denoise_enabled;
+   int    agc_enabled;
+   float  agc_level;
+   int    vad_enabled;
+   int    dereverb_enabled;
+   float  reverb_decay;
+   float  reverb_level;
+   float  speech_prob_start;
+   float  speech_prob_continue;
+   
+   float *frame;             /**< Processing frame (2*ps_size) */
+   float *ps;                /**< Current power spectrum */
+   float *gain2;             /**< Adjusted gains */
+   float *window;            /**< Analysis/Synthesis window */
+   float *noise;             /**< Noise estimate */
+   float *reverb_estimate;   /**< Estimate of reverb energy */
+   float *old_ps;            /**< Power spectrum for last frame */
+   float *gain;              /**< Ephraim Malah gain */
+   float *prior;             /**< A-priori SNR */
+   float *post;              /**< A-posteriori SNR */
+
+   float *S;                 /**< Smoothed power spectrum */
+   float *Smin;              /**< See Cohen paper */
+   float *Stmp;              /**< See Cohen paper */
+   float *update_prob;       /**< Propability of speech presence for noise update */
+
+   float *zeta;              /**< Smoothed a priori SNR */
+   float  Zpeak;
+   float  Zlast;
+
+   float *loudness_weight;   /**< Perceptual loudness curve */
+
+   float *echo_noise;
+
+   float *noise_bands;
+   float *noise_bands2;
+   int    noise_bandsN;
+   float *speech_bands;
+   float *speech_bands2;
+   int    speech_bandsN;
+
+   float *inbuf;             /**< Input buffer (overlapped analysis) */
+   float *outbuf;            /**< Output buffer (for overlap and add) */
+
+   float  speech_prob;
+   int    last_speech;
+   float  loudness;          /**< loudness estimate */
+   float  loudness2;         /**< loudness estimate */
+   int    nb_adapt;          /**< Number of frames used for adaptation so far */
+   int    nb_loudness_adapt; /**< Number of frames used for loudness adaptation so far */
+   int    consec_noise;      /**< Number of consecutive noise frames */
+   int    nb_preprocess;     /**< Number of frames processed so far */
+   struct drft_lookup *fft_lookup;   /**< Lookup table for the FFT */
+
+} SpeexPreprocessState;
+
+/** Creates a new preprocessing state */
+SpeexPreprocessState *speex_preprocess_state_init(int frame_size, int sampling_rate);
+
+/** Destroys a denoising state */
+void speex_preprocess_state_destroy(SpeexPreprocessState *st);
+
+/** Preprocess a frame */
+int speex_preprocess(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo);
+
+/** Preprocess a frame */
+void speex_preprocess_estimate_update(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo);
+
+/** Used like the ioctl function to control the preprocessor parameters */
+int speex_preprocess_ctl(SpeexPreprocessState *st, int request, void *ptr);
+
+
+
+/** Set preprocessor denoiser state */
+#define SPEEX_PREPROCESS_SET_DENOISE 0
+/** Get preprocessor denoiser state */
+#define SPEEX_PREPROCESS_GET_DENOISE 1
+
+/** Set preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_SET_AGC 2
+/** Get preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_GET_AGC 3
+
+/** Set preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_SET_VAD 4
+/** Get preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_GET_VAD 5
+
+/** Set preprocessor Automatic Gain Control level */
+#define SPEEX_PREPROCESS_SET_AGC_LEVEL 6
+/** Get preprocessor Automatic Gain Control level */
+#define SPEEX_PREPROCESS_GET_AGC_LEVEL 7
+
+/** Set preprocessor dereverb state */
+#define SPEEX_PREPROCESS_SET_DEREVERB 8
+/** Get preprocessor dereverb state */
+#define SPEEX_PREPROCESS_GET_DEREVERB 9
+
+/** Set preprocessor dereverb level */
+#define SPEEX_PREPROCESS_SET_DEREVERB_LEVEL 10
+/** Get preprocessor dereverb level */
+#define SPEEX_PREPROCESS_GET_DEREVERB_LEVEL 11
+
+/** Set preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_SET_DEREVERB_DECAY 12
+/** Get preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_GET_DEREVERB_DECAY 13
+
+#define SPEEX_PREPROCESS_SET_PROB_START 14
+#define SPEEX_PREPROCESS_GET_PROB_START 15
+
+#define SPEEX_PREPROCESS_SET_PROB_CONTINUE 16
+#define SPEEX_PREPROCESS_GET_PROB_CONTINUE 17
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_stereo.h b/pjmedia/src/pjmedia-codec/speex/speex_stereo.h
new file mode 100644
index 00000000..0b70021a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_stereo.h
@@ -0,0 +1,78 @@
+/* Copyright (C) 2002 Jean-Marc Valin*/
+/**
+   @file speex_stereo.h
+   @brief Describes the handling for intensity stereo
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef STEREO_H
+#define STEREO_H
+
+#include "speex/speex_types.h"
+#include "speex/speex_bits.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** State used for decoding (intensity) stereo information */
+typedef struct SpeexStereoState {
+   float balance;      /**< Left/right balance info */
+   float e_ratio;      /**< Ratio of energies: E(left+right)/[E(left)+E(right)]  */
+   float smooth_left;  /**< Smoothed left channel gain */
+   float smooth_right; /**< Smoothed right channel gain */
+   float reserved1;    /**< Reserved for future use */
+   float reserved2;    /**< Reserved for future use */
+} SpeexStereoState;
+
+/** Initialization value for a stereo state */
+#define SPEEX_STEREO_STATE_INIT {1,.5,1,1}
+
+/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
+void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits);
+
+/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
+void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits);
+
+/** Transforms a mono frame into a stereo frame using intensity stereo info */
+void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo);
+
+/** Transforms a mono frame into a stereo frame using intensity stereo info */
+void speex_decode_stereo_int(spx_int16_t *data, int frame_size, SpeexStereoState *stereo);
+
+/** Callback handler for intensity stereo info */
+int speex_std_stereo_request_handler(SpeexBits *bits, void *state, void *data);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/speex_types.h b/pjmedia/src/pjmedia-codec/speex/speex_types.h
new file mode 100644
index 00000000..b67c74fa
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/speex_types.h
@@ -0,0 +1,138 @@
+/* speex_types.h taken from libogg */
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: #ifdef jail to whip a few platforms into the UNIX ideal.
+ last mod: $Id$
+
+ ********************************************************************/
+/**
+   @file speex_types.h
+   @brief Speex types
+*/
+#ifndef _SPEEX_TYPES_H
+#define _SPEEX_TYPES_H
+
+#if defined(_WIN32) 
+
+#  if defined(__CYGWIN__)
+#    include <_G_config.h>
+     typedef _G_int64_t spx_int64_t;
+     typedef _G_int32_t spx_int32_t;
+     typedef _G_uint32_t spx_uint32_t;
+     typedef _G_int16_t spx_int16_t;
+     typedef _G_uint16_t spx_uint16_t;
+#  elif defined(__MINGW32__)
+     typedef short spx_int16_t;                                                                             
+     typedef unsigned short spx_uint16_t;                                                                   
+     typedef int spx_int32_t;                                                                               
+     typedef unsigned int spx_uint32_t;                                                                     
+     typedef long long spx_int64_t;                                                                         
+     typedef unsigned long long spx_uint64_t;  
+#  elif defined(__MWERKS__)
+     typedef long long spx_int64_t;
+     typedef int spx_int32_t;
+     typedef unsigned int spx_uint32_t;
+     typedef short spx_int16_t;
+     typedef unsigned short spx_uint16_t;
+#  else
+     /* MSVC/Borland */
+     typedef __int64 spx_int64_t;
+     typedef __int32 spx_int32_t;
+     typedef unsigned __int32 spx_uint32_t;
+     typedef __int16 spx_int16_t;
+     typedef unsigned __int16 spx_uint16_t;
+#  endif
+
+#elif defined(__MACOS__)
+
+#  include <sys/types.h>
+   typedef SInt16 spx_int16_t;
+   typedef UInt16 spx_uint16_t;
+   typedef SInt32 spx_int32_t;
+   typedef UInt32 spx_uint32_t;
+   typedef SInt64 spx_int64_t;
+
+#elif defined(__MACOSX__) /* MacOS X Framework build */
+
+#  include <sys/types.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+   typedef int64_t spx_int64_t;
+
+#elif defined(__BEOS__)
+
+   /* Be */
+#  include <inttypes.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+   typedef int64_t spx_int64_t;
+
+#elif defined (__EMX__)
+
+   /* OS/2 GCC */
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+   typedef long long spx_int64_t;
+
+#elif defined (DJGPP)
+
+   /* DJGPP */
+   typedef short spx_int16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+   typedef long long spx_int64_t;
+
+#elif defined(R5900)
+
+   /* PS2 EE */
+   typedef long spx_int64_t;
+   typedef int spx_int32_t;
+   typedef unsigned spx_uint32_t;
+   typedef short spx_int16_t;
+
+#elif defined(__SYMBIAN32__)
+
+   /* Symbian GCC */
+   typedef signed short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef signed int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+   typedef long long int spx_int64_t;
+
+#elif defined(CONFIG_TI_C54X) || defined (CONFIG_TI_C55X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef long spx_int32_t;
+   typedef unsigned long spx_uint32_t;
+
+#elif defined(CONFIG_TI_C5X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#else
+
+#  include <speex/speex_config_types.h>
+
+#endif
+
+#endif  /* _SPEEX_TYPES_H */
diff --git a/pjmedia/src/pjmedia-codec/speex/stack_alloc.h b/pjmedia/src/pjmedia-codec/speex/stack_alloc.h
new file mode 100644
index 00000000..6270d12c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/stack_alloc.h
@@ -0,0 +1,124 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file stack_alloc.h
+   @brief Temporary memory allocation on stack
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef STACK_ALLOC_H
+#define STACK_ALLOC_H
+
+#ifdef USE_ALLOCA
+#ifdef WIN32
+#include <malloc.h>
+#else
+#include <alloca.h>
+#endif
+#endif
+
+/**
+ * @def ALIGN(stack, size)
+ *
+ * Aligns the stack to a 'size' boundary
+ *
+ * @param stack Stack
+ * @param size  New size boundary
+ */
+
+/**
+ * @def PUSH(stack, size, type)
+ *
+ * Allocates 'size' elements of type 'type' on the stack
+ *
+ * @param stack Stack
+ * @param size  Number of elements
+ * @param type  Type of element
+ */
+
+/**
+ * @def PUSHS(stack, type)
+ *
+ * Allocates a struct stack 
+ *
+ * @param stack Stack
+ * @param type  Struct type
+ */
+
+/**
+ * @def VARDECL(var)
+ *
+ * Declare variable on stack
+ *
+ * @param var Variable to declare
+ */
+
+/**
+ * @def ALLOC(var, size, type)
+ *
+ * Allocate 'size' elements of 'type' on stack
+ *
+ * @param var  Name of variable to allocate
+ * @param size Number of elements
+ * @param type Type of element
+ */
+
+#ifdef ENABLE_VALGRIND
+
+#include <valgrind/memcheck.h>
+
+#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
+
+#define PUSH(stack, size, type) (VALGRIND_MAKE_NOACCESS(stack, 1000),ALIGN((stack),sizeof(type)),VALGRIND_MAKE_WRITABLE(stack, ((size)*sizeof(type))),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
+
+#define PUSHS(stack, type) (VALGRIND_MAKE_NOACCESS(stack, 1000),ALIGN((stack),sizeof(long)),VALGRIND_MAKE_WRITABLE(stack, (sizeof(type))),(stack)+=(sizeof(type)),(type*)((stack)-(sizeof(type))))
+
+#else
+
+#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
+
+#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
+
+#define PUSHS(stack, type) (ALIGN((stack),sizeof(long)),(stack)+=(sizeof(type)),(type*)((stack)-(sizeof(type))))
+
+#endif
+
+#if defined(VAR_ARRAYS)
+#define VARDECL(var) 
+#define ALLOC(var, size, type) type var[size]
+#elif defined(USE_ALLOCA)
+#define VARDECL(var) var
+#define ALLOC(var, size, type) var = alloca(sizeof(type)*size)
+#else
+#define VARDECL(var) var
+#define ALLOC(var, size, type) var = PUSH(stack, size, type)
+#endif
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/stereo.c b/pjmedia/src/pjmedia-codec/speex/stereo.c
new file mode 100644
index 00000000..f18387e5
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/stereo.c
@@ -0,0 +1,192 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: stereo.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex_stereo.h>
+#include <speex/speex_callbacks.h>
+#include "vq.h"
+#include <math.h>
+
+/*float e_ratio_quant[4] = {1, 1.26, 1.587, 2};*/
+static const float e_ratio_quant[4] = {.25f, .315f, .397f, .5f};
+
+void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits)
+{
+   int i, tmp;
+   float e_left=0, e_right=0, e_tot=0;
+   float balance, e_ratio;
+   for (i=0;i<frame_size;i++)
+   {
+      e_left  += ((float)data[2*i])*data[2*i];
+      e_right += ((float)data[2*i+1])*data[2*i+1];
+      data[i] =  .5*(((float)data[2*i])+data[2*i+1]);
+      e_tot   += ((float)data[i])*data[i];
+   }
+   balance=(e_left+1)/(e_right+1);
+   e_ratio = e_tot/(1+e_left+e_right);
+
+   /*Quantization*/
+   speex_bits_pack(bits, 14, 5);
+   speex_bits_pack(bits, SPEEX_INBAND_STEREO, 4);
+   
+   balance=4*log(balance);
+
+   /*Pack sign*/
+   if (balance>0)
+      speex_bits_pack(bits, 0, 1);
+   else
+      speex_bits_pack(bits, 1, 1);
+   balance=floor(.5+fabs(balance));
+   if (balance>30)
+      balance=31;
+   
+   speex_bits_pack(bits, (int)balance, 5);
+   
+   /*Quantize energy ratio*/
+   tmp=vq_index(&e_ratio, e_ratio_quant, 1, 4);
+   speex_bits_pack(bits, tmp, 2);
+}
+
+void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits)
+{
+   int i, tmp;
+   float e_left=0, e_right=0, e_tot=0;
+   float balance, e_ratio;
+   for (i=0;i<frame_size;i++)
+   {
+      e_left  += ((float)data[2*i])*data[2*i];
+      e_right += ((float)data[2*i+1])*data[2*i+1];
+      data[i] =  .5*(((float)data[2*i])+data[2*i+1]);
+      e_tot   += ((float)data[i])*data[i];
+   }
+   balance=(e_left+1)/(e_right+1);
+   e_ratio = e_tot/(1+e_left+e_right);
+
+   /*Quantization*/
+   speex_bits_pack(bits, 14, 5);
+   speex_bits_pack(bits, SPEEX_INBAND_STEREO, 4);
+   
+   balance=4*log(balance);
+
+   /*Pack sign*/
+   if (balance>0)
+      speex_bits_pack(bits, 0, 1);
+   else
+      speex_bits_pack(bits, 1, 1);
+   balance=floor(.5+fabs(balance));
+   if (balance>30)
+      balance=31;
+   
+   speex_bits_pack(bits, (int)balance, 5);
+   
+   /*Quantize energy ratio*/
+   tmp=vq_index(&e_ratio, e_ratio_quant, 1, 4);
+   speex_bits_pack(bits, tmp, 2);
+}
+
+void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo)
+{
+   float balance, e_ratio;
+   int i;
+   float e_tot=0, e_left, e_right, e_sum;
+
+   balance=stereo->balance;
+   e_ratio=stereo->e_ratio;
+   for (i=frame_size-1;i>=0;i--)
+   {
+      e_tot += ((float)data[i])*data[i];
+   }
+   e_sum=e_tot/e_ratio;
+   e_left  = e_sum*balance / (1+balance);
+   e_right = e_sum-e_left;
+
+   e_left  = sqrt(e_left/(e_tot+.01));
+   e_right = sqrt(e_right/(e_tot+.01));
+
+   for (i=frame_size-1;i>=0;i--)
+   {
+      float ftmp=data[i];
+      stereo->smooth_left  = .98*stereo->smooth_left  + .02*e_left;
+      stereo->smooth_right = .98*stereo->smooth_right + .02*e_right;
+      data[2*i] = stereo->smooth_left*ftmp;
+      data[2*i+1] = stereo->smooth_right*ftmp;
+   }
+}
+
+void speex_decode_stereo_int(spx_int16_t *data, int frame_size, SpeexStereoState *stereo)
+{
+   float balance, e_ratio;
+   int i;
+   float e_tot=0, e_left, e_right, e_sum;
+
+   balance=stereo->balance;
+   e_ratio=stereo->e_ratio;
+   for (i=frame_size-1;i>=0;i--)
+   {
+      e_tot += ((float)data[i])*data[i];
+   }
+   e_sum=e_tot/e_ratio;
+   e_left  = e_sum*balance / (1+balance);
+   e_right = e_sum-e_left;
+
+   e_left  = sqrt(e_left/(e_tot+.01));
+   e_right = sqrt(e_right/(e_tot+.01));
+
+   for (i=frame_size-1;i>=0;i--)
+   {
+      float ftmp=data[i];
+      stereo->smooth_left  = .98*stereo->smooth_left  + .02*e_left;
+      stereo->smooth_right = .98*stereo->smooth_right + .02*e_right;
+      data[2*i] = stereo->smooth_left*ftmp;
+      data[2*i+1] = stereo->smooth_right*ftmp;
+   }
+}
+
+int speex_std_stereo_request_handler(SpeexBits *bits, void *state, void *data)
+{
+   SpeexStereoState *stereo;
+   float sign=1;
+   int tmp;
+
+   stereo = (SpeexStereoState*)data;
+   if (speex_bits_unpack_unsigned(bits, 1))
+      sign=-1;
+   tmp = speex_bits_unpack_unsigned(bits, 5);
+   stereo->balance = exp(sign*.25*tmp);
+
+   tmp = speex_bits_unpack_unsigned(bits, 2);
+   stereo->e_ratio = e_ratio_quant[tmp];
+
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/vbr.c b/pjmedia/src/pjmedia-codec/speex/vbr.c
new file mode 100644
index 00000000..bfd1fa67
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vbr.c
@@ -0,0 +1,272 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: vbr.c
+
+   VBR-related routines
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "vbr.h"
+#include <math.h>
+
+
+#define sqr(x) ((x)*(x))
+
+#define MIN_ENERGY 6000
+#define NOISE_POW .3
+
+
+const float vbr_nb_thresh[9][11]={
+   {-1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0}, /*   CNG   */
+   { 3.5,  2.5,  2.0,  1.2,  0.5,  0.0, -0.5, -0.7, -0.8, -0.9, -1.0}, /*  2 kbps */
+   {10.0,  6.5,  5.2,  4.5,  3.9,  3.5,  3.0,  2.5,  2.3,  1.8,  1.0}, /*  6 kbps */
+   {11.0,  8.8,  7.5,  6.5,  5.0,  3.9,  3.9,  3.9,  3.5,  3.0,  1.0}, /*  8 kbps */
+   {11.0, 11.0,  9.9,  9.0,  8.0,  7.0,  6.5,  6.0,  5.0,  4.0,  2.0}, /* 11 kbps */
+   {11.0, 11.0, 11.0, 11.0,  9.5,  9.0,  8.0,  7.0,  6.5,  5.0,  3.0}, /* 15 kbps */
+   {11.0, 11.0, 11.0, 11.0, 11.0, 11.0,  9.5,  8.5,  8.0,  6.5,  4.0}, /* 18 kbps */
+   {11.0, 11.0, 11.0, 11.0, 11.0, 11.0, 11.0, 11.0,  9.8,  7.5,  5.5}, /* 24 kbps */ 
+   { 8.0,  5.0,  3.7,  3.0,  2.5,  2.0,  1.8,  1.5,  1.0,  0.0,  0.0}  /*  4 kbps */
+};
+
+
+const float vbr_hb_thresh[5][11]={
+   {-1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0}, /* silence */
+   {-1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0}, /*  2 kbps */
+   {11.0, 11.0,  9.5,  8.5,  7.5,  6.0,  5.0,  3.9,  3.0,  2.0,  1.0}, /*  6 kbps */
+   {11.0, 11.0, 11.0, 11.0, 11.0,  9.5,  8.7,  7.8,  7.0,  6.5,  4.0}, /* 10 kbps */
+   {11.0, 11.0, 11.0, 11.0, 11.0, 11.0, 11.0, 11.0,  9.8,  7.5,  5.5}  /* 18 kbps */ 
+};
+
+const float vbr_uhb_thresh[2][11]={
+   {-1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0}, /* silence */
+   { 3.9,  2.5,  0.0,  0.0,  0.0,  0.0,  0.0,  0.0,  0.0,  0.0, -1.0}  /*  2 kbps */
+};
+
+void vbr_init(VBRState *vbr)
+{
+   int i;
+
+   vbr->average_energy=0;
+   vbr->last_energy=1;
+   vbr->accum_sum=0;
+   vbr->energy_alpha=.1;
+   vbr->soft_pitch=0;
+   vbr->last_pitch_coef=0;
+   vbr->last_quality=0;
+
+   vbr->noise_accum = .05*pow(MIN_ENERGY, NOISE_POW);
+   vbr->noise_accum_count=.05;
+   vbr->noise_level=vbr->noise_accum/vbr->noise_accum_count;
+   vbr->consec_noise=0;
+
+
+   for (i=0;i<VBR_MEMORY_SIZE;i++)
+      vbr->last_log_energy[i] = log(MIN_ENERGY);
+}
+
+
+/*
+  This function should analyse the signal and decide how critical the
+  coding error will be perceptually. The following factors should be
+  taken into account:
+
+  -Attacks (positive energy derivative) should be coded with more bits
+
+  -Stationary voiced segments should receive more bits
+
+  -Segments with (very) low absolute energy should receive less bits (maybe
+  only shaped noise?)
+
+  -DTX for near-zero energy?
+
+  -Stationary fricative segments should have less bits
+
+  -Temporal masking: when energy slope is decreasing, decrease the bit-rate
+
+  -Decrease bit-rate for males (low pitch)?
+
+  -(wideband only) less bits in the high-band when signal is very 
+  non-stationary (harder to notice high-frequency noise)???
+
+*/
+
+float vbr_analysis(VBRState *vbr, spx_word16_t *sig, int len, int pitch, float pitch_coef)
+{
+   int i;
+   float ener=0, ener1=0, ener2=0;
+   float qual=7;
+   int va;
+   float log_energy;
+   float non_st=0;
+   float voicing;
+   float pow_ener;
+
+   for (i=0;i<len>>1;i++)
+      ener1 += ((float)sig[i])*sig[i];
+
+   for (i=len>>1;i<len;i++)
+      ener2 += ((float)sig[i])*sig[i];
+   ener=ener1+ener2;
+
+   log_energy = log(ener+MIN_ENERGY);
+   for (i=0;i<VBR_MEMORY_SIZE;i++)
+      non_st += sqr(log_energy-vbr->last_log_energy[i]);
+   non_st =  non_st/(30*VBR_MEMORY_SIZE);
+   if (non_st>1)
+      non_st=1;
+
+   voicing = 3*(pitch_coef-.4)*fabs(pitch_coef-.4);
+   vbr->average_energy = (1-vbr->energy_alpha)*vbr->average_energy + vbr->energy_alpha*ener;
+   vbr->noise_level=vbr->noise_accum/vbr->noise_accum_count;
+   pow_ener = pow(ener,NOISE_POW);
+   if (vbr->noise_accum_count<.06 && ener>MIN_ENERGY)
+      vbr->noise_accum = .05*pow_ener;
+
+   if ((voicing<.3 && non_st < .2 && pow_ener < 1.2*vbr->noise_level)
+       || (voicing<.3 && non_st < .05 && pow_ener < 1.5*vbr->noise_level)
+       || (voicing<.4 && non_st < .05 && pow_ener < 1.2*vbr->noise_level)
+       || (voicing<0 && non_st < .05))
+   {
+      float tmp;
+      va = 0;
+      vbr->consec_noise++;
+      if (pow_ener > 3*vbr->noise_level)
+         tmp = 3*vbr->noise_level;
+      else 
+         tmp = pow_ener;
+      if (vbr->consec_noise>=4)
+      {
+         vbr->noise_accum = .95*vbr->noise_accum + .05*tmp;
+         vbr->noise_accum_count = .95*vbr->noise_accum_count + .05;
+      }
+   } else {
+      va = 1;
+      vbr->consec_noise=0;
+   }
+
+   if (pow_ener < vbr->noise_level && ener>MIN_ENERGY)
+   {
+      vbr->noise_accum = .95*vbr->noise_accum + .05*pow_ener;
+      vbr->noise_accum_count = .95*vbr->noise_accum_count + .05;      
+   }
+
+   /* Checking for very low absolute energy */
+   if (ener < 30000)
+   {
+      qual -= .7;
+      if (ener < 10000)
+         qual-=.7;
+      if (ener < 3000)
+         qual-=.7;
+   } else {
+      float short_diff, long_diff;
+      short_diff = log((ener+1)/(1+vbr->last_energy));
+      long_diff = log((ener+1)/(1+vbr->average_energy));
+      /*fprintf (stderr, "%f %f\n", short_diff, long_diff);*/
+
+      if (long_diff<-5)
+         long_diff=-5;
+      if (long_diff>2)
+         long_diff=2;
+
+      if (long_diff>0)
+         qual += .6*long_diff;
+      if (long_diff<0)
+         qual += .5*long_diff;
+      if (short_diff>0)
+      {
+         if (short_diff>5)
+            short_diff=5;
+         qual += .5*short_diff;
+      }
+      /* Checking for energy increases */
+      if (ener2 > 1.6*ener1)
+         qual += .5;
+   }
+   vbr->last_energy = ener;
+   vbr->soft_pitch = .6*vbr->soft_pitch + .4*pitch_coef;
+   qual += 2.2*((pitch_coef-.4) + (vbr->soft_pitch-.4));
+
+   if (qual < vbr->last_quality)
+      qual = .5*qual + .5*vbr->last_quality;
+   if (qual<4)
+      qual=4;
+   if (qual>10)
+      qual=10;
+   
+   /*
+   if (vbr->consec_noise>=2)
+      qual-=1.3;
+   if (vbr->consec_noise>=5)
+      qual-=1.3;
+   if (vbr->consec_noise>=12)
+      qual-=1.3;
+   */
+   if (vbr->consec_noise>=3)
+      qual=4;
+
+   if (vbr->consec_noise)
+      qual -= 1.0 * (log(3.0 + vbr->consec_noise)-log(3));
+   if (qual<0)
+      qual=0;
+   
+   if (ener<60000)
+   {
+      if (vbr->consec_noise>2)
+         qual-=0.5*(log(3.0 + vbr->consec_noise)-log(3));
+      if (ener<10000&&vbr->consec_noise>2)
+         qual-=0.5*(log(3.0 + vbr->consec_noise)-log(3));
+      if (qual<0)
+         qual=0;
+      qual += .3*log(.0001+ener/60000.0);
+   }
+   if (qual<-1)
+      qual=-1;
+
+   /*printf ("%f %f %f %f %d\n", qual, voicing, non_st, pow_ener/(.01+vbr->noise_level), va);*/
+
+   vbr->last_pitch_coef = pitch_coef;
+   vbr->last_quality = qual;
+
+   for (i=VBR_MEMORY_SIZE-1;i>0;i--)
+      vbr->last_log_energy[i] = vbr->last_log_energy[i-1];
+   vbr->last_log_energy[0] = log_energy;
+
+   /*printf ("VBR: %f %f %f %d %f\n", (float)(log_energy-log(vbr->average_energy+MIN_ENERGY)), non_st, voicing, va, vbr->noise_level);*/
+
+   return qual;
+}
+
+void vbr_destroy(VBRState *vbr)
+{
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/vbr.h b/pjmedia/src/pjmedia-codec/speex/vbr.h
new file mode 100644
index 00000000..34e1d4c3
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vbr.h
@@ -0,0 +1,70 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file vbr.h
+   @brief Variable Bit-Rate (VBR) related routines
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+
+#ifndef VBR_H
+#define VBR_H
+
+#include "misc.h"
+
+#define VBR_MEMORY_SIZE 5
+
+extern const float vbr_nb_thresh[9][11];
+extern const float vbr_hb_thresh[5][11];
+extern const float vbr_uhb_thresh[2][11];
+
+/** VBR state. */
+typedef struct VBRState {
+   float energy_alpha;
+   float average_energy;
+   float last_energy;
+   float last_log_energy[VBR_MEMORY_SIZE];
+   float accum_sum;
+   float last_pitch_coef;
+   float soft_pitch;
+   float last_quality;
+   float noise_level;
+   float noise_accum;
+   float noise_accum_count;
+   int   consec_noise;
+} VBRState;
+
+void vbr_init(VBRState *vbr);
+
+float vbr_analysis(VBRState *vbr, spx_word16_t *sig, int len, int pitch, float pitch_coef);
+
+void vbr_destroy(VBRState *vbr);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/vq.c b/pjmedia/src/pjmedia-codec/speex/vq.c
new file mode 100644
index 00000000..d40133f3
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vq.c
@@ -0,0 +1,170 @@
+/* Copyright (C) 2002 Jean-Marc Valin
+   File: vq.c
+   Vector quantization
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "vq.h"
+#include "stack_alloc.h"
+#include "misc.h"
+
+#ifdef _USE_SSE
+#include <xmmintrin.h>
+#include "vq_sse.h"
+#elif defined(SHORTCUTS) && (defined(ARM4_ASM) || defined(ARM5E_ASM))
+#include "vq_arm4.h"
+#elif defined(BFIN_ASM)
+#include "vq_bfin.h"
+#endif
+
+
+int scal_quant(spx_word16_t in, const spx_word16_t *boundary, int entries)
+{
+   int i=0;
+   while (i<entries-1 && in>boundary[0])
+   {
+      boundary++;
+      i++;
+   }
+   return i;
+}
+
+int scal_quant32(spx_word32_t in, const spx_word32_t *boundary, int entries)
+{
+   int i=0;
+   while (i<entries-1 && in>boundary[0])
+   {
+      boundary++;
+      i++;
+   }
+   return i;
+}
+
+/*Finds the index of the entry in a codebook that best matches the input*/
+int vq_index(float *in, const float *codebook, int len, int entries)
+{
+   int i,j;
+   float min_dist=0;
+   int best_index=0;
+   for (i=0;i<entries;i++)
+   {
+      float dist=0;
+      for (j=0;j<len;j++)
+      {
+         float tmp = in[j]-*codebook++;
+         dist += tmp*tmp;
+      }
+      if (i==0 || dist<min_dist)
+      {
+         min_dist=dist;
+         best_index=i;
+      }
+   }
+   return best_index;
+}
+
+
+#ifndef OVERRIDE_VQ_NBEST
+/*Finds the indices of the n-best entries in a codebook*/
+void vq_nbest(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   int i,j,k,used;
+   used = 0;
+   for (i=0;i<entries;i++)
+   {
+      spx_word32_t dist=0;
+      for (j=0;j<len;j++)
+         dist = MAC16_16(dist,in[j],*codebook++);
+#ifdef FIXED_POINT
+      dist=SUB32(SHR32(E[i],1),dist);
+#else
+      dist=.5f*E[i]-dist;
+#endif
+      if (i<N || dist<best_dist[N-1])
+      {
+         for (k=N-1; (k >= 1) && (k > used || dist < best_dist[k-1]); k--)
+         {
+            best_dist[k]=best_dist[k-1];
+            nbest[k] = nbest[k-1];
+         }
+         best_dist[k]=dist;
+         nbest[k]=i;
+         used++;
+      }
+   }
+}
+#endif
+
+
+
+
+#ifndef OVERRIDE_VQ_NBEST_SIGN
+/*Finds the indices of the n-best entries in a codebook with sign*/
+void vq_nbest_sign(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   int i,j,k, sign, used;
+   used=0;
+   for (i=0;i<entries;i++)
+   {
+      spx_word32_t dist=0;
+      for (j=0;j<len;j++)
+         dist = MAC16_16(dist,in[j],*codebook++);
+      if (dist>0)
+      {
+         sign=0;
+         dist=-dist;
+      } else
+      {
+         sign=1;
+      }
+#ifdef FIXED_POINT
+      dist = ADD32(dist,SHR32(E[i],1));
+#else
+      dist = ADD32(dist,.5f*E[i]);
+#endif
+      if (i<N || dist<best_dist[N-1])
+      {
+         for (k=N-1; (k >= 1) && (k > used || dist < best_dist[k-1]); k--)
+         {
+            best_dist[k]=best_dist[k-1];
+            nbest[k] = nbest[k-1];
+         }
+         best_dist[k]=dist;
+         nbest[k]=i;
+         used++;
+         if (sign)
+            nbest[k]+=entries;
+      }
+   }
+}
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/vq.h b/pjmedia/src/pjmedia-codec/speex/vq.h
new file mode 100644
index 00000000..7ca81975
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vq.h
@@ -0,0 +1,55 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file vq.h
+   @brief Vector quantization
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef VQ_H
+#define VQ_H
+
+#include "misc.h"
+
+int scal_quant(spx_word16_t in, const spx_word16_t *boundary, int entries);
+int scal_quant32(spx_word32_t in, const spx_word32_t *boundary, int entries);
+
+int vq_index(float *in, const float *codebook, int len, int entries);
+#ifdef _USE_SSE
+#include <xmmintrin.h>
+void vq_nbest(spx_word16_t *in, const __m128 *codebook, int len, int entries, __m128 *E, int N, int *nbest, spx_word32_t *best_dist, char *stack);
+
+void vq_nbest_sign(spx_word16_t *in, const __m128 *codebook, int len, int entries, __m128 *E, int N, int *nbest, spx_word32_t *best_dist, char *stack);
+#else
+void vq_nbest(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack);
+
+void vq_nbest_sign(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack);
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/vq_arm4.h b/pjmedia/src/pjmedia-codec/speex/vq_arm4.h
new file mode 100644
index 00000000..585b8613
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vq_arm4.h
@@ -0,0 +1,115 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file vq_arm4.h
+   @brief ARM4-optimized vq routine
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_VQ_NBEST
+void vq_nbest(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   int i,j;
+   for (i=0;i<entries;i+=4)
+   {
+#if 1
+      spx_word32_t dist1, dist2, dist3, dist4;
+      int dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8;
+      __asm__ __volatile__ (
+            "mov %0, #0 \n\t"
+            "mov %1, #0 \n\t"
+            "mov %2, #0 \n\t"
+            "mov %3, #0 \n\t"
+            "mov %10, %4 \n\t"
+            "add %4, %4, %4\n\t"
+            ".vqloop%=:\n\t"
+            "ldrsh %7, [%5], #2 \n\t"
+            "ldrsh %8, [%6] \n\t"
+            "mov %9, %6 \n\t"
+            "mla %0, %7, %8, %0 \n\t"
+            "ldrsh %8, [%9, %4]! \n\t"
+            "mla %1, %7, %8, %1 \n\t"
+            "ldrsh %8, [%9, %4]!\n\t"
+            "mla %2, %7, %8, %2 \n\t"
+            "ldrsh %8, [%9, %4]! \n\t"
+            "mla %3, %7, %8, %3 \n\t"
+            "subs %10, %10, #1 \n\t"
+            "add %6, %6, #2 \n\t"
+            "bne .vqloop%="
+         : "=r" (dist1), "=r" (dist2), "=r" (dist3), "=r" (dist4),
+      "=r" (dead1), "=r" (dead2), "=r" (codebook), "=r" (dead4),
+      "=r" (dead5), "=r" (dead6), "=r" (dead7)
+         : "4" (len), "5" (in), "6" (codebook)
+         : "cc");
+#else
+dist1=dist2=dist3=dist4=0;
+   /*   spx_word32_t dist1=0;
+      spx_word32_t dist2=0;
+      spx_word32_t dist3=0;
+      spx_word32_t dist4=0;*/
+      for (j=0;j<2;j++)
+      {
+         const spx_word16_t *code = codebook;
+         dist1 = MAC16_16(dist1,in[j],*code);
+         code += len;
+         dist2 = MAC16_16(dist2,in[j],*code);
+         code += len;
+         dist3 = MAC16_16(dist3,in[j],*code);
+         code += len;
+         dist4 = MAC16_16(dist4,in[j],*code);
+         codebook++;
+      }
+#endif
+      dist1=SUB32(SHR(*E++,1),dist1);
+      if (dist1<*best_dist || i==0)
+      {
+         *best_dist=dist1;
+         *nbest=i;
+      }
+      dist2=SUB32(SHR(*E++,1),dist2);
+      if (dist2<*best_dist)
+      {
+         *best_dist=dist2;
+         *nbest=i+1;
+      }
+      dist3=SUB32(SHR(*E++,1),dist3);
+      if (dist3<*best_dist)
+      {
+         *best_dist=dist3;
+         *nbest=i+2;
+      }
+      dist4=SUB32(SHR(*E++,1),dist4);
+      if (dist4<*best_dist)
+      {
+         *best_dist=dist4;
+         *nbest=i+3;
+      }
+      codebook += 3*len;
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/vq_bfin.h b/pjmedia/src/pjmedia-codec/speex/vq_bfin.h
new file mode 100644
index 00000000..2cc9ea5f
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vq_bfin.h
@@ -0,0 +1,107 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file vq_bfin.h
+   @author Jean-Marc Valin 
+   @brief Blackfin-optimized vq routine
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_VQ_NBEST
+void vq_nbest(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   if (N==1)
+   {
+      best_dist[0] = 2147483647;
+      {
+         spx_word32_t dist;
+         __asm__ __volatile__
+               (
+            "LC0 = %8;\n\t"
+            "R2 = 0;\n\t"
+            "I0 = %6;\n\t"
+            "B0 = %6;\n\t"
+            "L0 = %9;\n\t"
+            "LOOP entries_loop%= LC0;\n\t"
+            "LOOP_BEGIN entries_loop%=;\n\t"
+               "%0 = [%4++];\n\t"
+               "%0 >>= 1;\n\t"
+               "A0 = %0;\n\t"
+               "R0.L = W[%1++%7] || R1.L = W[I0++];\n\t"
+               "LOOP vq_loop%= LC1 = %5;\n\t"
+               "LOOP_BEGIN vq_loop%=;\n\t"
+                  "%0 = (A0 -= R0.L*R1.L) (IS) || R0.L = W[%1++%7] || R1.L = W[I0++];\n\t"
+               "LOOP_END vq_loop%=;\n\t"
+               "%0 = (A0 -= R0.L*R1.L) (IS);\n\t"
+               "cc = %0 < %2;\n\t"
+               "if cc %2 = %0;\n\t"
+               "if cc %3 = R2;\n\t"
+               "R2 += 1;\n\t"
+            "LOOP_END entries_loop%=;\n\t"
+            : "=&D" (dist), "=&a" (codebook), "=&d" (best_dist[0]), "=&d" (nbest[0]), "=&a" (E)
+            : "a" (len-1), "a" (in), "a" (2), "d" (entries), "d" (len<<1), "1" (codebook), "4" (E), "2" (best_dist[0]), "3" (nbest[0])
+            : "R0", "R1", "R2", "I0", "L0", "B0", "A0", "cc", "memory"
+               );
+      }
+   } else {
+   int i,k,used;
+   used = 0;
+   for (i=0;i<entries;i++)
+   {
+      spx_word32_t dist;
+      __asm__
+            (
+            "%0 >>= 1;\n\t"
+            "A0 = %0;\n\t"
+            "I0 = %3;\n\t"
+            "L0 = 0;\n\t"
+            "R0.L = W[%1++%4] || R1.L = W[I0++];\n\t"
+            "LOOP vq_loop%= LC0 = %2;\n\t"
+            "LOOP_BEGIN vq_loop%=;\n\t"
+               "%0 = (A0 -= R0.L*R1.L) (IS) || R0.L = W[%1++%4] || R1.L = W[I0++];\n\t"
+            "LOOP_END vq_loop%=;\n\t"
+            "%0 = (A0 -= R0.L*R1.L) (IS);\n\t"
+         : "=D" (dist), "=a" (codebook)
+         : "a" (len-1), "a" (in), "a" (2), "1" (codebook), "0" (E[i])
+         : "R0", "R1", "I0", "L0", "A0"
+            );
+      if (i<N || dist<best_dist[N-1])
+      {
+         for (k=N-1; (k >= 1) && (k > used || dist < best_dist[k-1]); k--)
+         {
+            best_dist[k]=best_dist[k-1];
+            nbest[k] = nbest[k-1];
+         }
+         best_dist[k]=dist;
+         nbest[k]=i;
+         used++;
+      }
+   }
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/vq_sse.h b/pjmedia/src/pjmedia-codec/speex/vq_sse.h
new file mode 100644
index 00000000..00a42ce3
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/vq_sse.h
@@ -0,0 +1,120 @@
+/* Copyright (C) 2004 Jean-Marc Valin */
+/**
+   @file vq_sse.h
+   @brief SSE-optimized vq routine
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_VQ_NBEST
+void vq_nbest(spx_word16_t *_in, const __m128 *codebook, int len, int entries, __m128 *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   int i,j,k,used;
+   VARDECL(float *dist);
+   VARDECL(__m128 *in);
+   __m128 half;
+   used = 0;
+   ALLOC(dist, entries, float);
+   half = _mm_set_ps1(.5f);
+   ALLOC(in, len, __m128);
+   for (i=0;i<len;i++)
+      in[i] = _mm_set_ps1(_in[i]);
+   for (i=0;i<entries>>2;i++)
+   {
+      __m128 d = _mm_mul_ps(E[i], half);
+      for (j=0;j<len;j++)
+         d = _mm_sub_ps(d, _mm_mul_ps(in[j], *codebook++));
+      _mm_storeu_ps(dist+4*i, d);
+   }
+   for (i=0;i<entries;i++)
+   {
+      if (i<N || dist[i]<best_dist[N-1])
+      {
+         for (k=N-1; (k >= 1) && (k > used || dist[i] < best_dist[k-1]); k--)
+         {
+            best_dist[k]=best_dist[k-1];
+            nbest[k] = nbest[k-1];
+         }
+         best_dist[k]=dist[i];
+         nbest[k]=i;
+         used++;
+      }
+   }
+}
+
+
+
+
+#define OVERRIDE_VQ_NBEST_SIGN
+void vq_nbest_sign(spx_word16_t *_in, const __m128 *codebook, int len, int entries, __m128 *E, int N, int *nbest, spx_word32_t *best_dist, char *stack)
+{
+   int i,j,k,used;
+   VARDECL(float *dist);
+   VARDECL(__m128 *in);
+   __m128 half;
+   used = 0;
+   ALLOC(dist, entries, float);
+   half = _mm_set_ps1(.5f);
+   ALLOC(in, len, __m128);
+   for (i=0;i<len;i++)
+      in[i] = _mm_set_ps1(_in[i]);
+   for (i=0;i<entries>>2;i++)
+   {
+      __m128 d = _mm_setzero_ps();
+      for (j=0;j<len;j++)
+         d = _mm_add_ps(d, _mm_mul_ps(in[j], *codebook++));
+      _mm_storeu_ps(dist+4*i, d);
+   }
+   for (i=0;i<entries;i++)
+   {
+      int sign;
+      if (dist[i]>0)
+      {
+         sign=0;
+         dist[i]=-dist[i];
+      } else
+      {
+         sign=1;
+      }
+      dist[i] += .5f*((float*)E)[i];
+      if (i<N || dist[i]<best_dist[N-1])
+      {
+         for (k=N-1; (k >= 1) && (k > used || dist[i] < best_dist[k-1]); k--)
+         {
+            best_dist[k]=best_dist[k-1];
+            nbest[k] = nbest[k-1];
+         }
+         best_dist[k]=dist[i];
+         nbest[k]=i;
+         used++;
+         if (sign)
+            nbest[k]+=entries;
+      }
+   }
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-_kiss_fft_guts.h b/pjmedia/src/pjmedia-codec/speex/z-_kiss_fft_guts.h
new file mode 100644
index 00000000..abbd8b1f
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-_kiss_fft_guts.h
@@ -0,0 +1,147 @@
+/*
+Copyright (c) 2003-2004, Mark Borgerding
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+    * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define MIN(a,b) ((a)<(b) ? (a):(b))
+#define MAX(a,b) ((a)>(b) ? (a):(b))
+
+/* kiss_fft.h
+   defines kiss_fft_scalar as either short or a float type
+   and defines
+   typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
+#include "kiss_fft.h"
+#include <limits.h>
+
+#define MAXFACTORS 32
+/* e.g. an fft of length 128 has 4 factors 
+ as far as kissfft is concerned
+ 4*4*4*2
+ */
+
+struct kiss_fft_state{
+    int nfft;
+    int inverse;
+    int factors[2*MAXFACTORS];
+    kiss_fft_cpx twiddles[1];
+};
+
+/*
+  Explanation of macros dealing with complex math:
+
+   C_MUL(m,a,b)         : m = a*b
+   C_FIXDIV( c , div )  : if a fixed point impl., c /= div. noop otherwise
+   C_SUB( res, a,b)     : res = a - b
+   C_SUBFROM( res , a)  : res -= a
+   C_ADDTO( res , a)    : res += a
+ * */
+#ifdef FIXED_POINT
+# define FRACBITS 15
+# define SAMPPROD int32_t 
+#define SAMP_MAX 32767
+
+#define SAMP_MIN -SAMP_MAX
+
+#if defined(CHECK_OVERFLOW)
+#  define CHECK_OVERFLOW_OP(a,op,b)  \
+	if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
+		fprintf(stderr,"WARNING:overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld\n",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) );  }
+#endif
+
+
+#   define smul(a,b) ( (SAMPPROD)(a)*(b) )
+#   define sround( x )  (kiss_fft_scalar)( ( (x) + (1<<(FRACBITS-1)) ) >> FRACBITS )
+
+#   define S_MUL(a,b) sround( smul(a,b) )
+
+#   define C_MUL(m,a,b) \
+      do{ (m).r = sround( smul((a).r,(b).r) - smul((a).i,(b).i) ); \
+          (m).i = sround( smul((a).r,(b).i) + smul((a).i,(b).r) ); }while(0)
+
+#   define DIVSCALAR(x,k) \
+	(x) = sround( smul(  x, SAMP_MAX/k ) )
+
+#   define C_FIXDIV(c,div) \
+	do {    DIVSCALAR( (c).r , div);  \
+		DIVSCALAR( (c).i  , div); }while (0)
+
+#   define C_MULBYSCALAR( c, s ) \
+    do{ (c).r =  sround( smul( (c).r , s ) ) ;\
+        (c).i =  sround( smul( (c).i , s ) ) ; }while(0)
+
+#else  /* not FIXED_POINT*/
+
+#   define S_MUL(a,b) ( (a)*(b) )
+#define C_MUL(m,a,b) \
+    do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
+        (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
+#   define C_FIXDIV(c,div) /* NOOP */
+#   define C_MULBYSCALAR( c, s ) \
+    do{ (c).r *= (s);\
+        (c).i *= (s); }while(0)
+#endif
+
+#ifndef CHECK_OVERFLOW_OP
+#  define CHECK_OVERFLOW_OP(a,op,b) /* noop */
+#endif
+
+#define  C_ADD( res, a,b)\
+    do { \
+	    CHECK_OVERFLOW_OP((a).r,+,(b).r)\
+	    CHECK_OVERFLOW_OP((a).i,+,(b).i)\
+	    (res).r=(a).r+(b).r;  (res).i=(a).i+(b).i; \
+    }while(0)
+#define  C_SUB( res, a,b)\
+    do { \
+	    CHECK_OVERFLOW_OP((a).r,-,(b).r)\
+	    CHECK_OVERFLOW_OP((a).i,-,(b).i)\
+	    (res).r=(a).r-(b).r;  (res).i=(a).i-(b).i; \
+    }while(0)
+#define C_ADDTO( res , a)\
+    do { \
+	    CHECK_OVERFLOW_OP((res).r,+,(a).r)\
+	    CHECK_OVERFLOW_OP((res).i,+,(a).i)\
+	    (res).r += (a).r;  (res).i += (a).i;\
+    }while(0)
+
+#define C_SUBFROM( res , a)\
+    do {\
+	    CHECK_OVERFLOW_OP((res).r,-,(a).r)\
+	    CHECK_OVERFLOW_OP((res).i,-,(a).i)\
+	    (res).r -= (a).r;  (res).i -= (a).i; \
+    }while(0)
+
+
+#ifdef FIXED_POINT
+#  define KISS_FFT_COS(phase)  floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase))))
+#  define KISS_FFT_SIN(phase)  floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))
+#  define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+#  define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
+#  define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
+#  define HALF_OF(x) ((x)*_mm_set1_ps(.5))
+#else
+#  define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
+#  define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
+#  define HALF_OF(x) ((x)*.5)
+#endif
+
+#define  kf_cexp(x,phase) \
+	do{ \
+		(x)->r = KISS_FFT_COS(phase);\
+		(x)->i = KISS_FFT_SIN(phase);\
+	}while(0)
+
+
+/* a debugging function */
+#define pcpx(c)\
+    fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
diff --git a/pjmedia/src/pjmedia-codec/speex/z-fftwrap.c b/pjmedia/src/pjmedia-codec/speex/z-fftwrap.c
new file mode 100644
index 00000000..de093569
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-fftwrap.c
@@ -0,0 +1,301 @@
+/* Copyright (C) 2005 Jean-Marc Valin 
+   File: fftwrap.c
+
+   Wrapper for various FFTs 
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/*#define USE_SMALLFT*/
+#define USE_KISS_FFT
+
+
+#include "misc.h"
+
+
+#ifdef FIXED_POINT
+static int maximize_range(spx_word16_t *in, spx_word16_t *out, spx_word16_t bound, int len)
+{
+   int i, shift;
+   spx_word16_t max_val = 0;
+   for (i=0;i<len;i++)
+   {
+      if (in[i]>max_val)
+         max_val = in[i];
+      if (-in[i]>max_val)
+         max_val = -in[i];
+   }
+   shift=0;
+   while (max_val <= (bound>>1) && max_val != 0)
+   {
+      max_val <<= 1;
+      shift++;
+   }
+   for (i=0;i<len;i++)
+   {
+      out[i] = in[i] << shift;
+   }   
+   return shift;
+}
+
+static void renorm_range(spx_word16_t *in, spx_word16_t *out, int shift, int len)
+{
+   int i;
+   for (i=0;i<len;i++)
+   {
+      out[i] = (in[i] + (1<<(shift-1))) >> shift;
+   }
+}
+#endif
+
+#ifdef USE_SMALLFT
+
+#include "smallft.h"
+#include <math.h>
+
+void *spx_fft_init(int size)
+{
+   struct drft_lookup *table;
+   table = speex_alloc(sizeof(struct drft_lookup));
+   spx_drft_init((struct drft_lookup *)table, size);
+   return (void*)table;
+}
+
+void spx_fft_destroy(void *table)
+{
+   spx_drft_clear(table);
+   speex_free(table);
+}
+
+void spx_fft(void *table, float *in, float *out)
+{
+   if (in==out)
+   {
+      int i;
+      speex_warning("FFT should not be done in-place");
+      float scale = 1./((struct drft_lookup *)table)->n;
+      for (i=0;i<((struct drft_lookup *)table)->n;i++)
+         out[i] = scale*in[i];
+   } else {
+      int i;
+      float scale = 1./((struct drft_lookup *)table)->n;
+      for (i=0;i<((struct drft_lookup *)table)->n;i++)
+         out[i] = scale*in[i];
+   }
+   spx_drft_forward((struct drft_lookup *)table, out);
+}
+
+void spx_ifft(void *table, float *in, float *out)
+{
+   if (in==out)
+   {
+      int i;
+      speex_warning("FFT should not be done in-place");
+   } else {
+      int i;
+      for (i=0;i<((struct drft_lookup *)table)->n;i++)
+         out[i] = in[i];
+   }
+   spx_drft_backward((struct drft_lookup *)table, out);
+}
+
+#elif defined(USE_KISS_FFT)
+
+#include "kiss_fftr.h"
+#include "kiss_fft.h"
+
+struct kiss_config {
+   kiss_fftr_cfg forward;
+   kiss_fftr_cfg backward;
+   kiss_fft_cpx *freq_data;
+   int N;
+};
+
+void *spx_fft_init(int size)
+{
+   struct kiss_config *table;
+   table = speex_alloc(sizeof(struct kiss_config));
+   table->freq_data = speex_alloc(sizeof(kiss_fft_cpx)*((size>>1)+1));
+   table->forward = kiss_fftr_alloc(size,0,NULL,NULL);
+   table->backward = kiss_fftr_alloc(size,1,NULL,NULL);
+   table->N = size;
+   return table;
+}
+
+void spx_fft_destroy(void *table)
+{
+   struct kiss_config *t = (struct kiss_config *)table;
+   kiss_fftr_free(t->forward);
+   kiss_fftr_free(t->backward);
+   speex_free(t->freq_data);
+   speex_free(table);
+}
+
+#ifdef FIXED_POINT
+
+void spx_fft(void *table, spx_word16_t *in, spx_word16_t *out)
+{
+   int i;
+   int shift;
+   struct kiss_config *t = (struct kiss_config *)table;
+   shift = maximize_range(in, in, 32000, t->N);
+   kiss_fftr(t->forward, in, t->freq_data);
+   out[0] = t->freq_data[0].r;
+   for (i=1;i<t->N>>1;i++)
+   {
+      out[(i<<1)-1] = t->freq_data[i].r;
+      out[(i<<1)] = t->freq_data[i].i;
+   }
+   out[(i<<1)-1] = t->freq_data[i].r;
+   renorm_range(in, in, shift, t->N);
+   renorm_range(out, out, shift, t->N);
+}
+
+#else
+
+void spx_fft(void *table, spx_word16_t *in, spx_word16_t *out)
+{
+   int i;
+   float scale;
+   struct kiss_config *t = (struct kiss_config *)table;
+   scale = 1./t->N;
+   kiss_fftr(t->forward, in, t->freq_data);
+   out[0] = scale*t->freq_data[0].r;
+   for (i=1;i<t->N>>1;i++)
+   {
+      out[(i<<1)-1] = scale*t->freq_data[i].r;
+      out[(i<<1)] = scale*t->freq_data[i].i;
+   }
+   out[(i<<1)-1] = scale*t->freq_data[i].r;
+}
+#endif
+
+void spx_ifft(void *table, spx_word16_t *in, spx_word16_t *out)
+{
+   int i;
+   struct kiss_config *t = (struct kiss_config *)table;
+   t->freq_data[0].r = in[0];
+   t->freq_data[0].i = 0;
+   for (i=1;i<t->N>>1;i++)
+   {
+      t->freq_data[i].r = in[(i<<1)-1];
+      t->freq_data[i].i = in[(i<<1)];
+   }
+   t->freq_data[i].r = in[(i<<1)-1];
+   t->freq_data[i].i = 0;
+
+   kiss_fftri(t->backward, t->freq_data, out);
+}
+
+
+#else
+
+#error No other FFT implemented
+
+#endif
+
+
+int fixed_point = 1;
+#ifdef FIXED_POINT
+#include "smallft.h"
+
+
+void spx_fft_float(void *table, float *in, float *out)
+{
+   int i;
+#ifdef USE_SMALLFT
+   int N = ((struct drft_lookup *)table)->n;
+#elif defined(USE_KISS_FFT)
+   int N = ((struct kiss_config *)table)->N;
+#else
+#endif
+   spx_word16_t _in[N];
+   spx_word16_t _out[N];
+   for (i=0;i<N;i++)
+      _in[i] = (int)floor(.5+in[i]);
+   spx_fft(table, _in, _out);
+   for (i=0;i<N;i++)
+      out[i] = _out[i];
+   if (!fixed_point)
+   {
+      float scale;
+      struct drft_lookup t;
+      spx_drft_init(&t, ((struct kiss_config *)table)->N);
+      scale = 1./((struct kiss_config *)table)->N;
+      for (i=0;i<((struct kiss_config *)table)->N;i++)
+         out[i] = scale*in[i];
+      spx_drft_forward(&t, out);
+      spx_drft_clear(&t);
+   }
+}
+
+void spx_ifft_float(void *table, float *in, float *out)
+{
+   int i;
+#ifdef USE_SMALLFT
+   int N = ((struct drft_lookup *)table)->n;
+#elif defined(USE_KISS_FFT)
+   int N = ((struct kiss_config *)table)->N;
+#else
+#endif
+   spx_word16_t _in[N];
+   spx_word16_t _out[N];
+   for (i=0;i<N;i++)
+      _in[i] = (int)floor(.5+in[i]);
+   spx_ifft(table, _in, _out);
+   for (i=0;i<N;i++)
+      out[i] = _out[i];
+   if (!fixed_point)
+   {
+      int i;
+      struct drft_lookup t;
+      spx_drft_init(&t, ((struct kiss_config *)table)->N);
+      for (i=0;i<((struct kiss_config *)table)->N;i++)
+         out[i] = in[i];
+      spx_drft_backward(&t, out);
+      spx_drft_clear(&t);
+   }
+}
+
+#else
+
+void spx_fft_float(void *table, float *in, float *out)
+{
+   spx_fft(table, in, out);
+}
+void spx_ifft_float(void *table, float *in, float *out)
+{
+   spx_ifft(table, in, out);
+}
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-fftwrap.h b/pjmedia/src/pjmedia-codec/speex/z-fftwrap.h
new file mode 100644
index 00000000..826b38e9
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-fftwrap.h
@@ -0,0 +1,58 @@
+/* Copyright (C) 2005 Jean-Marc Valin 
+   File: fftwrap.h
+
+   Wrapper for various FFTs 
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef FFTWRAP_H
+#define FFTWRAP_H
+
+#include "misc.h"
+
+/** Compute tables for an FFT */
+void *spx_fft_init(int size);
+
+/** Destroy tables for an FFT */
+void spx_fft_destroy(void *table);
+
+/** Forward (real to half-complex) transform */
+void spx_fft(void *table, spx_word16_t *in, spx_word16_t *out);
+
+/** Backward (half-complex to real) transform */
+void spx_ifft(void *table, spx_word16_t *in, spx_word16_t *out);
+
+/** Forward (real to half-complex) transform of float data */
+void spx_fft_float(void *table, float *in, float *out);
+
+/** Backward (half-complex to real) transform of float data */
+void spx_ifft_float(void *table, float *in, float *out);
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-jitter.c b/pjmedia/src/pjmedia-codec/speex/z-jitter.c
new file mode 100644
index 00000000..55a0833f
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-jitter.c
@@ -0,0 +1,316 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: speex_jitter.h
+
+   Adaptive jitter buffer for Speex
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#include "misc.h"
+#include <speex/speex.h>
+#include <speex/speex_bits.h>
+#include <speex/speex_jitter.h>
+#include <stdio.h>
+
+#define LATE_BINS 4
+
+void speex_jitter_init(SpeexJitter *jitter, void *decoder, int sampling_rate)
+{
+   int i;
+   for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
+   {
+      jitter->len[i]=-1;
+      jitter->timestamp[i]=-1;
+   }
+
+   jitter->dec = decoder;
+   speex_decoder_ctl(decoder, SPEEX_GET_FRAME_SIZE, &jitter->frame_size);
+   jitter->frame_time = jitter->frame_size;
+
+   speex_bits_init(&jitter->current_packet);
+   jitter->valid_bits = 0;
+
+   jitter->buffer_size = 4;
+
+   jitter->pointer_timestamp = -jitter->frame_time * jitter->buffer_size;
+   jitter->reset_state = 1;
+   jitter->lost_count = 0;
+   jitter->loss_rate = 0;
+}
+
+void speex_jitter_destroy(SpeexJitter *jitter)
+{
+   speex_bits_destroy(&jitter->current_packet);
+}
+
+
+void speex_jitter_put(SpeexJitter *jitter, char *packet, int len, int timestamp)
+{
+   int i,j;
+   int arrival_margin;
+
+   if (jitter->reset_state)
+   {
+      jitter->reset_state=0;
+      jitter->pointer_timestamp = timestamp-jitter->frame_time * jitter->buffer_size;
+      for (i=0;i<MAX_MARGIN;i++)
+      {
+         jitter->shortterm_margin[i] = 0;
+         jitter->longterm_margin[i] = 0;
+      }
+      for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
+      {
+         jitter->len[i]=-1;
+         jitter->timestamp[i]=-1;
+      }
+      fprintf(stderr, "reset to %d\n", timestamp);
+   }
+   
+   /* Cleanup buffer (remove old packets that weren't played) */
+   for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
+   {
+      if (jitter->timestamp[i]<jitter->pointer_timestamp)
+      {
+         jitter->len[i]=-1;
+         /*if (jitter->timestamp[i] != -1)
+            fprintf (stderr, "discarding %d %d\n", jitter->timestamp[i], jitter->pointer_timestamp);*/
+      }
+   }
+
+   /*Find an empty slot in the buffer*/
+   for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
+   {
+      if (jitter->len[i]==-1)
+         break;
+   }
+
+   /*fprintf(stderr, "%d %d %f\n", timestamp, jitter->pointer_timestamp, jitter->drift_average);*/
+   if (i==SPEEX_JITTER_MAX_BUFFER_SIZE)
+   {
+      int earliest=jitter->timestamp[0];
+      i=0;
+      for (j=1;j<SPEEX_JITTER_MAX_BUFFER_SIZE;j++)
+      {
+         if (jitter->timestamp[j]<earliest)
+         {
+            earliest = jitter->timestamp[j];
+            i=j;
+         }
+      }
+      /*fprintf (stderr, "Buffer is full, discarding earliest frame %d (currently at %d)\n", timestamp, jitter->pointer_timestamp);*/
+      /*No place left in the buffer*/
+      
+      /*skip some frame(s) */
+      /*return;*/
+   }
+   
+   /* Copy packet in buffer */
+   if (len>SPEEX_JITTER_MAX_PACKET_SIZE)
+      len=SPEEX_JITTER_MAX_PACKET_SIZE;
+   for (j=0;j<len/BYTES_PER_CHAR;j++)
+      jitter->buf[i][j]=packet[j];
+   jitter->timestamp[i]=timestamp;
+   jitter->len[i]=len;
+   
+   /* Don't count late packets when adjusting the synchro (we're taking care of them elsewhere) */
+   /*if (timestamp <= jitter->pointer_timestamp)
+   {
+      fprintf (stderr, "frame for timestamp %d arrived too late (at time %d)\n", timestamp, jitter->pointer_timestamp);
+   }*/
+
+   /* Adjust the buffer size depending on network conditions */
+   arrival_margin = (timestamp - jitter->pointer_timestamp - jitter->frame_time);
+   
+   if (arrival_margin >= -LATE_BINS*jitter->frame_time)
+   {
+      int int_margin;
+      for (i=0;i<MAX_MARGIN;i++)
+      {
+         jitter->shortterm_margin[i] *= .98;
+         jitter->longterm_margin[i] *= .995;
+      }
+      int_margin = (arrival_margin + LATE_BINS*jitter->frame_time)/jitter->frame_time;
+      if (int_margin>MAX_MARGIN-1)
+         int_margin = MAX_MARGIN-1;
+      if (int_margin>=0)
+      {
+         jitter->shortterm_margin[int_margin] += .02;
+         jitter->longterm_margin[int_margin] += .005;
+      }
+   }
+   
+   /*fprintf (stderr, "margin : %d %d %f %f %f %f\n", arrival_margin, jitter->buffer_size, 100*jitter->loss_rate, 100*jitter->late_ratio, 100*jitter->ontime_ratio, 100*jitter->early_ratio);*/
+}
+
+void speex_jitter_get(SpeexJitter *jitter, short *out, int *current_timestamp)
+{
+   int i;
+   int ret;
+   float late_ratio_short;
+   float late_ratio_long;
+   float ontime_ratio_short;
+   float ontime_ratio_long;
+   float early_ratio_short;
+   float early_ratio_long;
+   
+   late_ratio_short = 0;
+   late_ratio_long = 0;
+   for (i=0;i<LATE_BINS;i++)
+   {
+      late_ratio_short += jitter->shortterm_margin[i];
+      late_ratio_long += jitter->longterm_margin[i];
+   }
+   ontime_ratio_short = jitter->shortterm_margin[LATE_BINS];
+   ontime_ratio_long = jitter->longterm_margin[LATE_BINS];
+   early_ratio_short = early_ratio_long = 0;
+   for (i=LATE_BINS+1;i<MAX_MARGIN;i++)
+   {
+      early_ratio_short += jitter->shortterm_margin[i];
+      early_ratio_long += jitter->longterm_margin[i];
+   }
+   if (0&&jitter->pointer_timestamp%1000==0)
+   {
+      fprintf (stderr, "%f %f %f %f %f %f\n", early_ratio_short, early_ratio_long, ontime_ratio_short, ontime_ratio_long, late_ratio_short, late_ratio_long);
+      /*fprintf (stderr, "%f %f\n", early_ratio_short + ontime_ratio_short + late_ratio_short, early_ratio_long + ontime_ratio_long + late_ratio_long);*/
+   }
+   
+   if (late_ratio_short > .1 || late_ratio_long > .03)
+   {
+      jitter->shortterm_margin[MAX_MARGIN-1] += jitter->shortterm_margin[MAX_MARGIN-2];
+      jitter->longterm_margin[MAX_MARGIN-1] += jitter->longterm_margin[MAX_MARGIN-2];
+      for (i=MAX_MARGIN-3;i>=0;i--)
+      {
+         jitter->shortterm_margin[i+1] = jitter->shortterm_margin[i];
+         jitter->longterm_margin[i+1] = jitter->longterm_margin[i];         
+      }
+      jitter->shortterm_margin[0] = 0;
+      jitter->longterm_margin[0] = 0;            
+      /*fprintf (stderr, "interpolate frame\n");*/
+      speex_decode_int(jitter->dec, NULL, out);
+      if (current_timestamp)
+         *current_timestamp = jitter->pointer_timestamp;
+      return;
+   }
+   
+   /* Increment timestamp */
+   jitter->pointer_timestamp += jitter->frame_time;
+   
+   if (late_ratio_short + ontime_ratio_short < .005 && late_ratio_long + ontime_ratio_long < .01 && early_ratio_short > .8)
+   {
+      jitter->shortterm_margin[0] += jitter->shortterm_margin[1];
+      jitter->longterm_margin[0] += jitter->longterm_margin[1];
+      for (i=1;i<MAX_MARGIN-1;i++)
+      {
+         jitter->shortterm_margin[i] = jitter->shortterm_margin[i+1];
+         jitter->longterm_margin[i] = jitter->longterm_margin[i+1];         
+      }
+      jitter->shortterm_margin[MAX_MARGIN-1] = 0;
+      jitter->longterm_margin[MAX_MARGIN-1] = 0;      
+      /*fprintf (stderr, "drop frame\n");*/
+      jitter->pointer_timestamp += jitter->frame_time;
+   }
+
+   if (current_timestamp)
+      *current_timestamp = jitter->pointer_timestamp;
+
+   /* Send zeros while we fill in the buffer */
+   if (jitter->pointer_timestamp<0)
+   {
+      for (i=0;i<jitter->frame_size;i++)
+         out[i]=0;
+      return;
+   }
+   
+   /* Search the buffer for a packet with the right timestamp */
+   for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
+   {
+      if (jitter->len[i]!=-1 && jitter->timestamp[i]==jitter->pointer_timestamp)
+         break;
+   }
+   
+   if (i==SPEEX_JITTER_MAX_BUFFER_SIZE)
+   {
+      /* No packet found */
+      if (jitter->valid_bits)
+      {
+         /* Try decoding last received packet */
+         ret = speex_decode_int(jitter->dec, &jitter->current_packet, out);
+         if (ret == 0)
+         {
+            jitter->lost_count = 0;
+            return;
+         } else {
+            jitter->valid_bits = 0;
+         }
+      }
+
+      /*fprintf (stderr, "lost/late frame %d\n", jitter->pointer_timestamp);*/
+      /*Packet is late or lost*/
+      speex_decode_int(jitter->dec, NULL, out);
+      jitter->lost_count++;
+      if (jitter->lost_count>=25)
+      {
+         jitter->lost_count = 0;
+         jitter->reset_state = 1;
+         speex_decoder_ctl(jitter->dec, SPEEX_RESET_STATE, NULL);
+      }
+      jitter->loss_rate = .999*jitter->loss_rate + .001;
+   } else {
+      jitter->lost_count = 0;
+      /* Found the right packet */
+      speex_bits_read_from(&jitter->current_packet, jitter->buf[i], jitter->len[i]);
+      jitter->len[i]=-1;
+      /* Decode packet */
+      ret = speex_decode_int(jitter->dec, &jitter->current_packet, out);
+      if (ret == 0)
+      {
+         jitter->valid_bits = 1;
+      } else {
+         /* Error while decoding */
+         for (i=0;i<jitter->frame_size;i++)
+            out[i]=0;
+      }
+      jitter->loss_rate = .999*jitter->loss_rate;
+   }
+
+
+}
+
+int speex_jitter_get_pointer_timestamp(SpeexJitter *jitter)
+{
+   return jitter->pointer_timestamp;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.c b/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.c
new file mode 100644
index 00000000..d6763dbc
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.c
@@ -0,0 +1,430 @@
+/*
+Copyright (c) 2003-2004, Mark Borgerding
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+    * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "_kiss_fft_guts.h"
+#include "misc.h"
+
+/* The guts header contains all the multiplication and addition macros that are defined for
+ fixed or floating point complex numbers.  It also delares the kf_ internal functions.
+ */
+
+static kiss_fft_cpx *scratchbuf=NULL;
+static size_t nscratchbuf=0;
+static kiss_fft_cpx *tmpbuf=NULL;
+static size_t ntmpbuf=0;
+
+#define CHECKBUF(buf,nbuf,n) \
+    do { \
+        if ( nbuf < (size_t)(n) ) {\
+            free(buf); \
+            buf = (kiss_fft_cpx*)KISS_FFT_MALLOC(sizeof(kiss_fft_cpx)*(n)); \
+            nbuf = (size_t)(n); \
+        } \
+   }while(0)
+        
+static void kf_bfly2(
+        kiss_fft_cpx * Fout,
+        const size_t fstride,
+        const kiss_fft_cfg st,
+        int m
+        )
+{
+    kiss_fft_cpx * Fout2;
+    kiss_fft_cpx * tw1 = st->twiddles;
+    kiss_fft_cpx t;
+    Fout2 = Fout + m;
+    if (!st->inverse) {
+       int i;
+       kiss_fft_cpx *x=Fout;
+       for (i=0;i<2*m;i++)
+       {
+          x[i].r = SHR(x[i].r,1);
+          x[i].i = SHR(x[i].i,1);
+       }
+    }
+
+    do{
+        C_MUL (t,  *Fout2 , *tw1);
+        tw1 += fstride;
+        C_SUB( *Fout2 ,  *Fout , t );
+        C_ADDTO( *Fout ,  t );
+        ++Fout2;
+        ++Fout;
+    }while (--m);
+}
+
+static void kf_bfly4(
+        kiss_fft_cpx * Fout,
+        const size_t fstride,
+        const kiss_fft_cfg st,
+        const size_t m
+        )
+{
+    kiss_fft_cpx *tw1,*tw2,*tw3;
+    kiss_fft_cpx scratch[6];
+    size_t k=m;
+    const size_t m2=2*m;
+    const size_t m3=3*m;
+
+    tw3 = tw2 = tw1 = st->twiddles;
+
+    if (!st->inverse) {
+       int i;
+       kiss_fft_cpx *x=Fout;
+       for (i=0;i<4*m;i++)
+       {
+          x[i].r = PSHR16(x[i].r,2);
+          x[i].i = PSHR16(x[i].i,2);
+       }
+    }
+    if (st->inverse)
+    {
+       do {
+          C_MUL(scratch[0],Fout[m] , *tw1 );
+          C_MUL(scratch[1],Fout[m2] , *tw2 );
+          C_MUL(scratch[2],Fout[m3] , *tw3 );
+          
+          C_SUB( scratch[5] , *Fout, scratch[1] );
+          C_ADDTO(*Fout, scratch[1]);
+          C_ADD( scratch[3] , scratch[0] , scratch[2] );
+          C_SUB( scratch[4] , scratch[0] , scratch[2] );
+          C_SUB( Fout[m2], *Fout, scratch[3] );
+          tw1 += fstride;
+          tw2 += fstride*2;
+          tw3 += fstride*3;
+          C_ADDTO( *Fout , scratch[3] );
+
+          Fout[m].r = scratch[5].r - scratch[4].i;
+          Fout[m].i = scratch[5].i + scratch[4].r;
+          Fout[m3].r = scratch[5].r + scratch[4].i;
+          Fout[m3].i = scratch[5].i - scratch[4].r;
+          ++Fout;
+       } while(--k);
+    } else
+    {
+       do {
+          C_MUL(scratch[0],Fout[m] , *tw1 );
+          C_MUL(scratch[1],Fout[m2] , *tw2 );
+          C_MUL(scratch[2],Fout[m3] , *tw3 );
+          
+          C_SUB( scratch[5] , *Fout, scratch[1] );
+          C_ADDTO(*Fout, scratch[1]);
+          C_ADD( scratch[3] , scratch[0] , scratch[2] );
+          C_SUB( scratch[4] , scratch[0] , scratch[2] );
+          C_SUB( Fout[m2], *Fout, scratch[3] );
+          tw1 += fstride;
+          tw2 += fstride*2;
+          tw3 += fstride*3;
+          C_ADDTO( *Fout , scratch[3] );
+          
+          Fout[m].r = scratch[5].r + scratch[4].i;
+          Fout[m].i = scratch[5].i - scratch[4].r;
+          Fout[m3].r = scratch[5].r - scratch[4].i;
+          Fout[m3].i = scratch[5].i + scratch[4].r;
+          ++Fout;
+       }while(--k);
+    }
+}
+
+static void kf_bfly3(
+         kiss_fft_cpx * Fout,
+         const size_t fstride,
+         const kiss_fft_cfg st,
+         size_t m
+         )
+{
+     size_t k=m;
+     const size_t m2 = 2*m;
+     kiss_fft_cpx *tw1,*tw2;
+     kiss_fft_cpx scratch[5];
+     kiss_fft_cpx epi3;
+     epi3 = st->twiddles[fstride*m];
+
+     tw1=tw2=st->twiddles;
+
+     do{
+        if (!st->inverse) {
+         C_FIXDIV(*Fout,3); C_FIXDIV(Fout[m],3); C_FIXDIV(Fout[m2],3);
+	}
+
+         C_MUL(scratch[1],Fout[m] , *tw1);
+         C_MUL(scratch[2],Fout[m2] , *tw2);
+
+         C_ADD(scratch[3],scratch[1],scratch[2]);
+         C_SUB(scratch[0],scratch[1],scratch[2]);
+         tw1 += fstride;
+         tw2 += fstride*2;
+
+         Fout[m].r = Fout->r - HALF_OF(scratch[3].r);
+         Fout[m].i = Fout->i - HALF_OF(scratch[3].i);
+
+         C_MULBYSCALAR( scratch[0] , epi3.i );
+
+         C_ADDTO(*Fout,scratch[3]);
+
+         Fout[m2].r = Fout[m].r + scratch[0].i;
+         Fout[m2].i = Fout[m].i - scratch[0].r;
+
+         Fout[m].r -= scratch[0].i;
+         Fout[m].i += scratch[0].r;
+
+         ++Fout;
+     }while(--k);
+}
+
+static void kf_bfly5(
+        kiss_fft_cpx * Fout,
+        const size_t fstride,
+        const kiss_fft_cfg st,
+        int m
+        )
+{
+    kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4;
+    int u;
+    kiss_fft_cpx scratch[13];
+    kiss_fft_cpx * twiddles = st->twiddles;
+    kiss_fft_cpx *tw;
+    kiss_fft_cpx ya,yb;
+    ya = twiddles[fstride*m];
+    yb = twiddles[fstride*2*m];
+
+    Fout0=Fout;
+    Fout1=Fout0+m;
+    Fout2=Fout0+2*m;
+    Fout3=Fout0+3*m;
+    Fout4=Fout0+4*m;
+
+    tw=st->twiddles;
+    for ( u=0; u<m; ++u ) {
+        if (!st->inverse) {
+        C_FIXDIV( *Fout0,5); C_FIXDIV( *Fout1,5); C_FIXDIV( *Fout2,5); C_FIXDIV( *Fout3,5); C_FIXDIV( *Fout4,5);
+	}
+        scratch[0] = *Fout0;
+
+        C_MUL(scratch[1] ,*Fout1, tw[u*fstride]);
+        C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]);
+        C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]);
+        C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]);
+
+        C_ADD( scratch[7],scratch[1],scratch[4]);
+        C_SUB( scratch[10],scratch[1],scratch[4]);
+        C_ADD( scratch[8],scratch[2],scratch[3]);
+        C_SUB( scratch[9],scratch[2],scratch[3]);
+
+        Fout0->r += scratch[7].r + scratch[8].r;
+        Fout0->i += scratch[7].i + scratch[8].i;
+
+        scratch[5].r = scratch[0].r + S_MUL(scratch[7].r,ya.r) + S_MUL(scratch[8].r,yb.r);
+        scratch[5].i = scratch[0].i + S_MUL(scratch[7].i,ya.r) + S_MUL(scratch[8].i,yb.r);
+
+        scratch[6].r =  S_MUL(scratch[10].i,ya.i) + S_MUL(scratch[9].i,yb.i);
+        scratch[6].i = -S_MUL(scratch[10].r,ya.i) - S_MUL(scratch[9].r,yb.i);
+
+        C_SUB(*Fout1,scratch[5],scratch[6]);
+        C_ADD(*Fout4,scratch[5],scratch[6]);
+
+        scratch[11].r = scratch[0].r + S_MUL(scratch[7].r,yb.r) + S_MUL(scratch[8].r,ya.r);
+        scratch[11].i = scratch[0].i + S_MUL(scratch[7].i,yb.r) + S_MUL(scratch[8].i,ya.r);
+        scratch[12].r = - S_MUL(scratch[10].i,yb.i) + S_MUL(scratch[9].i,ya.i);
+        scratch[12].i = S_MUL(scratch[10].r,yb.i) - S_MUL(scratch[9].r,ya.i);
+
+        C_ADD(*Fout2,scratch[11],scratch[12]);
+        C_SUB(*Fout3,scratch[11],scratch[12]);
+
+        ++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
+    }
+}
+
+/* perform the butterfly for one stage of a mixed radix FFT */
+static void kf_bfly_generic(
+        kiss_fft_cpx * Fout,
+        const size_t fstride,
+        const kiss_fft_cfg st,
+        int m,
+        int p
+        )
+{
+    int u,k,q1,q;
+    kiss_fft_cpx * twiddles = st->twiddles;
+    kiss_fft_cpx t;
+    int Norig = st->nfft;
+
+    CHECKBUF(scratchbuf,nscratchbuf,p);
+
+    for ( u=0; u<m; ++u ) {
+        k=u;
+        for ( q1=0 ; q1<p ; ++q1 ) {
+            scratchbuf[q1] = Fout[ k  ];
+        if (!st->inverse) {
+            C_FIXDIV(scratchbuf[q1],p);
+	}
+            k += m;
+        }
+
+        k=u;
+        for ( q1=0 ; q1<p ; ++q1 ) {
+            int twidx=0;
+            Fout[ k ] = scratchbuf[0];
+            for (q=1;q<p;++q ) {
+                twidx += fstride * k;
+                if (twidx>=Norig) twidx-=Norig;
+                C_MUL(t,scratchbuf[q] , twiddles[twidx] );
+                C_ADDTO( Fout[ k ] ,t);
+            }
+            k += m;
+        }
+    }
+}
+
+static
+void kf_work(
+        kiss_fft_cpx * Fout,
+        const kiss_fft_cpx * f,
+        const size_t fstride,
+        int in_stride,
+        int * factors,
+        const kiss_fft_cfg st
+        )
+{
+    kiss_fft_cpx * Fout_beg=Fout;
+    const int p=*factors++; /* the radix  */
+    const int m=*factors++; /* stage's fft length/p */
+    const kiss_fft_cpx * Fout_end = Fout + p*m;
+
+    if (m==1) {
+        do{
+            *Fout = *f;
+            f += fstride*in_stride;
+        }while(++Fout != Fout_end );
+    }else{
+        do{
+            kf_work( Fout , f, fstride*p, in_stride, factors,st);
+            f += fstride*in_stride;
+        }while( (Fout += m) != Fout_end );
+    }
+
+    Fout=Fout_beg;
+
+    switch (p) {
+        case 2: kf_bfly2(Fout,fstride,st,m); break;
+        case 3: kf_bfly3(Fout,fstride,st,m); break; 
+        case 4: kf_bfly4(Fout,fstride,st,m); break;
+        case 5: kf_bfly5(Fout,fstride,st,m); break; 
+        default: kf_bfly_generic(Fout,fstride,st,m,p); break;
+    }
+}
+
+/*  facbuf is populated by p1,m1,p2,m2, ...
+    where 
+    p[i] * m[i] = m[i-1]
+    m0 = n                  */
+static 
+void kf_factor(int n,int * facbuf)
+{
+    int p=4;
+    double floor_sqrt;
+    floor_sqrt = floor( sqrt((double)n) );
+
+    /*factor out powers of 4, powers of 2, then any remaining primes */
+    do {
+        while (n % p) {
+            switch (p) {
+                case 4: p = 2; break;
+                case 2: p = 3; break;
+                default: p += 2; break;
+            }
+            if (p > floor_sqrt)
+                p = n;          /* no more factors, skip to end */
+        }
+        n /= p;
+        *facbuf++ = p;
+        *facbuf++ = n;
+    } while (n > 1);
+}
+
+/*
+ *
+ * User-callable function to allocate all necessary storage space for the fft.
+ *
+ * The return value is a contiguous block of memory, allocated with malloc.  As such,
+ * It can be freed with free(), rather than a kiss_fft-specific function.
+ * */
+kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem )
+{
+    kiss_fft_cfg st=NULL;
+    size_t memneeded = sizeof(struct kiss_fft_state)
+        + sizeof(kiss_fft_cpx)*(nfft-1); /* twiddle factors*/
+
+    if ( lenmem==NULL ) {
+        st = ( kiss_fft_cfg)KISS_FFT_MALLOC( memneeded );
+    }else{
+        if (mem != NULL && *lenmem >= memneeded)
+            st = (kiss_fft_cfg)mem;
+        *lenmem = memneeded;
+    }
+    if (st) {
+        int i;
+        st->nfft=nfft;
+        st->inverse = inverse_fft;
+
+        for (i=0;i<nfft;++i) {
+            const double pi=3.14159265358979323846264338327;
+            double phase = ( -2*pi /nfft ) * i;
+            if (st->inverse)
+                phase *= -1;
+            kf_cexp(st->twiddles+i, phase );
+        }
+
+        kf_factor(nfft,st->factors);
+    }
+    return st;
+}
+
+
+
+    
+void kiss_fft_stride(kiss_fft_cfg st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int in_stride)
+{
+    if (fin == fout) {
+        CHECKBUF(tmpbuf,ntmpbuf,st->nfft);
+        kf_work(tmpbuf,fin,1,in_stride, st->factors,st);
+        memcpy(fout,tmpbuf,sizeof(kiss_fft_cpx)*st->nfft);
+    }else{
+        kf_work( fout, fin, 1,in_stride, st->factors,st );
+    }
+}
+
+void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
+{
+    kiss_fft_stride(cfg,fin,fout,1);
+}
+
+
+/* not really necessary to call, but if someone is doing in-place ffts, they may want to free the 
+   buffers from CHECKBUF
+ */ 
+void kiss_fft_cleanup(void)
+{
+    free(scratchbuf);
+    scratchbuf = NULL;
+    nscratchbuf=0;
+    free(tmpbuf);
+    tmpbuf=NULL;
+    ntmpbuf=0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.h b/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.h
new file mode 100644
index 00000000..4d73f31a
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-kiss_fft.h
@@ -0,0 +1,110 @@
+#ifndef KISS_FFT_H
+#define KISS_FFT_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <memory.h>
+#include <malloc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ ATTENTION!
+ If you would like a :
+ -- a utility that will handle the caching of fft objects
+ -- real-only (no imaginary time component ) FFT
+ -- a multi-dimensional FFT
+ -- a command-line utility to perform ffts
+ -- a command-line utility to perform fast-convolution filtering
+
+ Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
+  in the tools/ directory.
+*/
+
+#ifdef USE_SIMD
+# include <xmmintrin.h>
+# define kiss_fft_scalar __m128
+#define KISS_FFT_MALLOC(nbytes) memalign(16,nbytes)
+#else	
+#define KISS_FFT_MALLOC malloc
+#endif	
+
+
+#ifdef FIXED_POINT
+#include <sys/types.h>	
+#  define kiss_fft_scalar int16_t
+#else
+# ifndef kiss_fft_scalar
+/*  default is float */
+#   define kiss_fft_scalar float
+# endif
+#endif
+
+typedef struct {
+    kiss_fft_scalar r;
+    kiss_fft_scalar i;
+}kiss_fft_cpx;
+
+typedef struct kiss_fft_state* kiss_fft_cfg;
+
+/* 
+ *  kiss_fft_alloc
+ *  
+ *  Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
+ *
+ *  typical usage:      kiss_fft_cfg mycfg=kiss_fft_alloc(1024,0,NULL,NULL);
+ *
+ *  The return value from fft_alloc is a cfg buffer used internally
+ *  by the fft routine or NULL.
+ *
+ *  If lenmem is NULL, then kiss_fft_alloc will allocate a cfg buffer using malloc.
+ *  The returned value should be free()d when done to avoid memory leaks.
+ *  
+ *  The state can be placed in a user supplied buffer 'mem':
+ *  If lenmem is not NULL and mem is not NULL and *lenmem is large enough,
+ *      then the function places the cfg in mem and the size used in *lenmem
+ *      and returns mem.
+ *  
+ *  If lenmem is not NULL and ( mem is NULL or *lenmem is not large enough),
+ *      then the function returns NULL and places the minimum cfg 
+ *      buffer size in *lenmem.
+ * */
+
+kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem); 
+
+/*
+ * kiss_fft(cfg,in_out_buf)
+ *
+ * Perform an FFT on a complex input buffer.
+ * for a forward FFT,
+ * fin should be  f[0] , f[1] , ... ,f[nfft-1]
+ * fout will be   F[0] , F[1] , ... ,F[nfft-1]
+ * Note that each element is complex and can be accessed like
+    f[k].r and f[k].i
+ * */
+void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
+
+/*
+ A more generic version of the above function. It reads its input from every Nth sample.
+ * */
+void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride);
+
+/* If kiss_fft_alloc allocated a buffer, it is one contiguous 
+   buffer and can be simply free()d when no longer needed*/
+#define kiss_fft_free free
+
+/*
+ Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up 
+ your compiler output to call this before you exit.
+*/
+void kiss_fft_cleanup(void);
+	
+
+#ifdef __cplusplus
+} 
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.c b/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.c
new file mode 100644
index 00000000..3ac4db98
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.c
@@ -0,0 +1,163 @@
+/*
+Copyright (c) 2003-2004, Mark Borgerding
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+    * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "kiss_fftr.h"
+#include "_kiss_fft_guts.h"
+
+struct kiss_fftr_state{
+    kiss_fft_cfg substate;
+    kiss_fft_cpx * tmpbuf;
+    kiss_fft_cpx * super_twiddles;
+#ifdef USE_SIMD    
+    long pad;
+#endif    
+};
+
+kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem)
+{
+    int i;
+    kiss_fftr_cfg st = NULL;
+    size_t subsize, memneeded;
+
+    if (nfft & 1) {
+        fprintf(stderr,"Real FFT optimization must be even.\n");
+        return NULL;
+    }
+    nfft >>= 1;
+
+    kiss_fft_alloc (nfft, inverse_fft, NULL, &subsize);
+    memneeded = sizeof(struct kiss_fftr_state) + subsize + sizeof(kiss_fft_cpx) * ( nfft * 2);
+
+    if (lenmem == NULL) {
+        st = (kiss_fftr_cfg) KISS_FFT_MALLOC (memneeded);
+    } else {
+        if (*lenmem >= memneeded)
+            st = (kiss_fftr_cfg) mem;
+        *lenmem = memneeded;
+    }
+    if (!st)
+        return NULL;
+
+    st->substate = (kiss_fft_cfg) (st + 1); /*just beyond kiss_fftr_state struct */
+    st->tmpbuf = (kiss_fft_cpx *) (((char *) st->substate) + subsize);
+    st->super_twiddles = st->tmpbuf + nfft;
+    kiss_fft_alloc(nfft, inverse_fft, st->substate, &subsize);
+
+    for (i = 0; i < nfft; ++i) {
+        double phase =
+            -3.14159265358979323846264338327 * ((double) i / nfft + .5);
+        if (inverse_fft)
+            phase *= -1;
+        kf_cexp (st->super_twiddles+i,phase);
+    }
+    return st;
+}
+
+void kiss_fftr(kiss_fftr_cfg st,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata)
+{
+    /* input buffer timedata is stored row-wise */
+    int k,ncfft;
+    kiss_fft_cpx fpnk,fpk,f1k,f2k,tw,tdc;
+
+    if ( st->substate->inverse) {
+        fprintf(stderr,"kiss fft usage error: improper alloc\n");
+        exit(1);
+    }
+
+    ncfft = st->substate->nfft;
+
+    /*perform the parallel fft of two real signals packed in real,imag*/
+    kiss_fft( st->substate , (const kiss_fft_cpx*)timedata, st->tmpbuf );
+    /* The real part of the DC element of the frequency spectrum in st->tmpbuf
+     * contains the sum of the even-numbered elements of the input time sequence
+     * The imag part is the sum of the odd-numbered elements
+     *
+     * The sum of tdc.r and tdc.i is the sum of the input time sequence. 
+     *      yielding DC of input time sequence
+     * The difference of tdc.r - tdc.i is the sum of the input (dot product) [1,-1,1,-1... 
+     *      yielding Nyquist bin of input time sequence
+     */
+ 
+    tdc.r = st->tmpbuf[0].r;
+    tdc.i = st->tmpbuf[0].i;
+    C_FIXDIV(tdc,2);
+    CHECK_OVERFLOW_OP(tdc.r ,+, tdc.i);
+    CHECK_OVERFLOW_OP(tdc.r ,-, tdc.i);
+    freqdata[0].r = tdc.r + tdc.i;
+    freqdata[ncfft].r = tdc.r - tdc.i;
+#ifdef USE_SIMD    
+    freqdata[ncfft].i = freqdata[0].i = _mm_set1_ps(0);
+#else
+    freqdata[ncfft].i = freqdata[0].i = 0;
+#endif
+
+    for ( k=1;k <= ncfft/2 ; ++k ) {
+        fpk    = st->tmpbuf[k]; 
+        fpnk.r =   st->tmpbuf[ncfft-k].r;
+        fpnk.i = - st->tmpbuf[ncfft-k].i;
+        C_FIXDIV(fpk,2);
+        C_FIXDIV(fpnk,2);
+
+        C_ADD( f1k, fpk , fpnk );
+        C_SUB( f2k, fpk , fpnk );
+        C_MUL( tw , f2k , st->super_twiddles[k]);
+
+        freqdata[k].r = HALF_OF(f1k.r + tw.r);
+        freqdata[k].i = HALF_OF(f1k.i + tw.i);
+        freqdata[ncfft-k].r = HALF_OF(f1k.r - tw.r);
+        freqdata[ncfft-k].i = HALF_OF(tw.i - f1k.i);
+    }
+}
+
+void kiss_fftri(kiss_fftr_cfg st,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata)
+{
+    /* input buffer timedata is stored row-wise */
+    int k, ncfft;
+
+    if (st->substate->inverse == 0) {
+        fprintf (stderr, "kiss fft usage error: improper alloc\n");
+        exit (1);
+    }
+
+    ncfft = st->substate->nfft;
+
+    st->tmpbuf[0].r = freqdata[0].r + freqdata[ncfft].r;
+    st->tmpbuf[0].i = freqdata[0].r - freqdata[ncfft].r;
+    /*C_FIXDIV(st->tmpbuf[0],2);*/
+
+    for (k = 1; k <= ncfft / 2; ++k) {
+        kiss_fft_cpx fk, fnkc, fek, fok, tmp;
+        fk = freqdata[k];
+        fnkc.r = freqdata[ncfft - k].r;
+        fnkc.i = -freqdata[ncfft - k].i;
+        /*C_FIXDIV( fk , 2 );
+        C_FIXDIV( fnkc , 2 );*/
+
+        C_ADD (fek, fk, fnkc);
+        C_SUB (tmp, fk, fnkc);
+        C_MUL (fok, tmp, st->super_twiddles[k]);
+        C_ADD (st->tmpbuf[k],     fek, fok);
+        C_SUB (st->tmpbuf[ncfft - k], fek, fok);
+#ifdef USE_SIMD        
+        st->tmpbuf[ncfft - k].i *= _mm_set1_ps(-1.0);
+#else
+        st->tmpbuf[ncfft - k].i *= -1;
+#endif
+    }
+    kiss_fft (st->substate, st->tmpbuf, (kiss_fft_cpx *) timedata);
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.h b/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.h
new file mode 100644
index 00000000..72e5a577
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-kiss_fftr.h
@@ -0,0 +1,46 @@
+#ifndef KISS_FTR_H
+#define KISS_FTR_H
+
+#include "kiss_fft.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    
+/* 
+ 
+ Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
+
+ 
+ 
+ */
+
+typedef struct kiss_fftr_state *kiss_fftr_cfg;
+
+
+kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
+/*
+ nfft must be even
+
+ If you don't care to allocate space, use mem = lenmem = NULL 
+*/
+
+
+void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata);
+/*
+ input timedata has nfft scalar points
+ output freqdata has nfft/2+1 complex points
+*/
+
+void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata);
+/*
+ input freqdata has  nfft/2+1 complex points
+ output timedata has nfft scalar points
+*/
+
+#define kiss_fftr_free free
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-lbr_48k_tables.c b/pjmedia/src/pjmedia-codec/speex/z-lbr_48k_tables.c
new file mode 100644
index 00000000..2e6db3fd
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-lbr_48k_tables.c
@@ -0,0 +1,678 @@
+/* Copyright (C) 2002 Jean-Marc Valin 
+   File: lbr_48k_tables.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+
+int dummy_epic_48k_variable=0;
+#ifdef EPIC_48K
+
+const signed char gain_cdbk_ulbr[192] = {
+-31, -48, -30, 
+-19, -10, -18, 
+-33, -22, -45, 
+-5, -56, -43, 
+-30, -56, -3, 
+-59, -17, -52, 
+-41, -60, -58, 
+-64, -47, -22, 
+-30, -31, -31, 
+-29, -14, -31, 
+-22, -37, -58, 
+-31, -44, 13, 
+-37, 0, 1, 
+-46, -55, -35, 
+-56, -14, -53, 
+-8, 1, -36, 
+-29, -15, -27, 
+-29, -39, -28, 
+-43, -5, 3, 
+-51, -27, -54, 
+10, -46, -36, 
+3, -3, -42, 
+-27, 16, -22, 
+-34, -52, 13, 
+-31, -21, -28, 
+-34, -45, -40, 
+-20, -48, 4, 
+-40, -27, 16, 
+-6, 11, -44, 
+-35, 12, -5, 
+19, -33, -37, 
+-29, 18, -32, 
+-29, -23, -19, 
+16, -47, -28, 
+-34, -30, 17, 
+-20, 2, -26, 
+-38, -40, -36, 
+15, -14, -40, 
+-39, 14, -9, 
+-15, 25, -39, 
+-26, 19, -32, 
+-39, 17, -14, 
+10, -36, -26, 
+14, -13, -40, 
+-29, -21, -12, 
+-8, 19, -39, 
+-36, -18, 15, 
+-32, -38, -38, 
+-19, 4, -23, 
+-38, -7, 11, 
+9, -10, -39, 
+-37, 24, -19, 
+-34, -5, -8, 
+-20, 23, -41, 
+-4, 17, -31, 
+-17, -26, -26, 
+-24, 28, -36, 
+-7, 15, -39, 
+-42, 16, -11, 
+-29, 14, -6, 
+-36, 28, -27, 
+-21, 5, -26, 
+11, -9, -39, 
+-38, -7, 13, 
+};
+
+
+const signed char exc_12_32_table[384] = {
+34, 55, 9, 55, 4, 44, -2, 25, 4, -6, 13, -22, 
+20, 26, -13, -56, -37, 18, 5, 28, 4, 10, 6, -7, 
+37, -24, -31, 22, 12, -6, -4, -7, 2, 0, -3, -2, 
+-16, -13, -1, 9, -2, 4, 6, 5, -3, 3, 8, -1, 
+-1, -6, -2, -1, 8, 24, 19, 33, -73, -53, 6, -18, 
+14, 7, 11, 8, -33, -94, -5, 7, 0, 44, 1, 19, 
+-9, -7, -34, -16, 8, 2, 5, 0, 3, 1, -2, 3, 
+-22, 6, -2, 12, 16, 30, 39, 25, 25, 2, 10, -2, 
+-1, -40, -6, -51, -5, -48, -9, -33, -14, -1, -24, 15, 
+104, 39, 12, -9, -20, -12, -30, -10, -31, -7, -30, -8, 
+-71, -53, -4, -11, 9, -10, 7, -10, 10, -1, 11, 8, 
+24, 14, 6, -3, 10, 8, 8, 11, -6, 11, 0, -2, 
+-6, -2, 1, -1, -3, 8, -41, 27, 57, -7, 11, -16, 
+-61, 50, 10, -10, 4, -13, 14, -7, 1, 5, -4, 4, 
+0, 2, -1, -2, -1, 1, 1, 0, -1, -1, -2, -3, 
+-3, -15, 69, 60, 10, -10, -10, -29, -21, -7, -16, 2, 
+24, -32, 24, -18, -14, -2, -11, 11, -6, 10, 1, 3, 
+24, -10, 14, 18, -13, 17, -16, 4, -3, -21, -3, -11, 
+-19, 12, -14, 26, 20, -9, 24, -15, 18, 1, -32, -2, 
+-1, 8, -3, 4, 11, -47, 7, 46, -4, -10, -10, -2, 
+-24, 29, -33, 6, -20, -3, 0, -12, 5, -30, 8, -13, 
+28, 9, 5, -11, 0, -14, -13, -22, -12, -8, -4, 1, 
+-6, 28, 45, -18, -31, -5, 1, 2, 1, 5, 0, -3, 
+-19, -10, 10, 27, 8, -16, -28, -9, 2, -5, 8, -1, 
+100, -49, 4, -43, 25, -7, 1, 9, -13, 13, -18, 13, 
+-1, -1, 0, 2, -2, -8, 9, -46, -7, 70, 23, 7, 
+-103, 20, 8, 42, -5, 21, -4, 4, 1, -8, 16, -8, 
+3, 3, 8, 4, 7, -3, -3, -4, 9, 6, 2, 13, 
+6, 3, -15, 11, -43, 31, 40, -13, 12, -21, -2, -3, 
+-10, -9, 16, -35, 31, -3, -12, 8, -34, 7, 12, 22, 
+-3, -4, -7, -12, 24, 53, -19, -43, 4, -3, -4, 6, 
+-18, -30, -58, -17, -11, 17, 23, 34, 30, 28, 28, 15, 
+};
+
+
+const signed char cdbk_lsp_vlbr[5120]={
+23, 34, 108, 100, 102, 82, 69, 48, 52, 25,
+0, -37, -55, -78, -111, -79, 58, 57, 45, 32,
+27, -9, -12, -14, -41, -29, -17, -41, 44, 35,
+-24, -68, -72, 61, 100, 73, 100, 80, 70, 37,
+12, -5, 22, 11, -10, -40, -33, -17, 19, 12,
+-20, -57, -94, -92, 56, 71, 48, 31, 22, -5,
+41, 28, 6, -6, -12, -39, -18, -16, -30, -23,
+65, 54, 41, 28, 23, 9, 26, 18, 22, 6,
+17, -16, -33, -54, -87, -79, 8, -8, 44, 35,
+-20, -62, -78, 22, 78, 47, 44, 33, 26, 14,
+8, 1, 45, 47, 72, 68, 55, 31, 36, 17,
+-27, -68, -86, -65, -10, 23, 8, -22, -31, 25,
+-4, -38, -55, -68, -96, -118, -39, 30, 28, 31,
+-21, -66, -47, 99, 91, 68, 78, 56, 64, 36,
+33, 22, 13, -13, -36, -22, 44, 37, 54, 33,
+-31, -76, -106, -100, -5, 21, 7, -17, 13, 48,
+-26, -65, -84, -84, -46, 67, 97, 66, 58, 31,
+-20, -52, -32, -20, 3, 16, 27, 40, 54, 29,
+-6, -35, -56, -64, -8, -31, -36, 21, 26, -3,
+32, 23, 1, -23, -19, -44, -45, -7, 10, -10,
+-24, -55, 2, 67, 72, 85, 90, 74, 77, 45,
+-21, -58, -45, -49, 16, 34, 13, -15, -16, 16,
+8, -31, -34, -61, -83, 10, 24, 8, 56, 25,
+-8, -49, -74, -95, -123, -77, 6, 40, 46, 42,
+-21, -60, -59, -34, -12, 27, 8, -19, -48, -17,
+-25, -66, -78, -73, -81, -16, 14, 0, -2, 33,
+78, 79, 69, 49, 44, 32, 50, 44, 46, 22,
+24, 9, -4, -18, -37, -56, 22, 34, 22, 11,
+-19, -59, -85, -41, 46, 72, 60, 33, 29, -3,
+-21, -66, -70, 65, 92, 57, 61, 41, 40, 23,
+-4, -41, -60, -72, -102, -106, 4, 56, 57, 31,
+-5, -48, -62, -91, -109, 1, 76, 54, 72, 39,
+-21, -61, -86, -46, -34, -39, 42, 25, 15, 12,
+5, -16, -36, -56, 5, 18, 11, 13, 52, 23,
+12, -6, 30, 40, 59, 40, 27, 8, 19, 6,
+25, 8, -9, -19, -25, -53, -40, -38, -46, -4,
+-17, -59, -83, 2, 58, 29, 18, -2, -17, -5,
+-35, -80, -111, -117, -41, -9, 14, 23, 36, 56,
+48, 67, 93, 71, 77, 91, 110, 95, 83, 47,
+-25, -62, -97, -93, 76, 96, 73, 52, 61, 28,
+-9, -55, -46, 49, 33, 8, 1, -25, 28, 23,
+-10, -47, -60, -45, -62, -58, 56, 57, 48, 28,
+34, 12, -9, 0, 34, 4, 6, 11, 3, -18,
+21, -9, -16, -13, -39, -41, 14, -8, 33, 28,
+-7, -49, -61, 15, 34, 3, 2, -13, -28, -17,
+-14, -50, -46, -65, -76, -13, -10, -29, -30, 22,
+-28, -68, -97, -98, -8, 38, 36, 26, 25, 15,
+6, -33, -9, 1, -28, -11, -19, -24, 61, 36,
+-15, -60, -19, 81, 58, 52, 42, 28, 66, 36,
+-15, -52, -71, -15, 11, -13, 38, 28, 11, -4,
+34, 1, -9, -27, -57, -19, 36, 6, 14, 0,
+-1, -43, -14, 16, -12, -5, -14, -29, -33, -32,
+-13, -57, -75, -100, -111, 1, 2, 13, 48, 33,
+12, 16, 100, 85, 69, 49, 40, 29, 46, 23,
+-4, -26, -41, -44, -7, -26, -39, -27, 18, 0,
+-4, -47, -51, 17, 7, -19, 13, -10, -16, 9,
+-24, -63, -93, -53, 25, 14, 73, 51, 35, 8,
+-34, -77, -106, -83, -51, -47, 2, 12, 41, 53,
+-13, -47, -67, -44, 42, 20, 24, 33, 21, -3,
+11, -15, -29, -51, -79, -88, 22, 56, 43, 20,
+11, -22, -37, -1, 61, 40, 28, 24, 22, -6,
+-3, -33, -50, -66, -93, -100, -16, -16, 3, 41,
+-18, -58, -82, -5, 95, 78, 56, 39, 30, 1,
+-6, -47, -28, -26, -36, 49, 55, 51, 71, 35,
+-6, -50, -42, -4, -32, -1, -1, -18, 67, 40,
+-23, -63, -56, -48, -32, 0, -14, -43, -46, 25,
+-17, -61, -63, 13, -1, 28, 23, 10, 67, 36,
+45, 92, 124, 111, 108, 86, 77, 56, 57, 28,
+50, 35, 13, 3, -2, -32, 3, 14, 6, -8,
+12, -17, -24, -42, -67, -23, 67, 49, 64, 38,
+-21, -60, -90, -45, 32, 6, 7, -3, -15, 9,
+-16, -62, -73, 50, 46, 18, 7, -13, 63, 39,
+19, -16, -19, 20, 5, -15, 16, -9, 5, 8,
+-11, -46, -42, -39, -55, -68, -62, -27, -18, 23,
+-23, -61, -67, -71, -29, 44, 32, 10, -15, -12,
+-6, -45, -43, -40, -67, -22, 42, 19, 61, 38,
+9, -13, -38, -37, 40, 30, 15, 9, 11, -16,
+0, -18, -29, -34, -17, -44, -50, -3, 47, 15,
+-3, -46, -26, 20, -10, 16, 20, -2, 43, 18,
+-23, -46, 46, 91, 99, 100, 99, 79, 72, 42,
+-1, -44, -33, -36, -56, 22, 17, 4, 71, 37,
+0, -38, -49, 0, -1, -30, -21, -35, -44, -6,
+-32, -74, -101, -98, -14, -21, -23, 7, 26, 45,
+8, -28, -44, -63, -96, -84, 34, 21, 13, 23,
+10, -24, -38, -17, -29, -53, -16, -41, -14, 23,
+-19, -61, -76, -12, 97, 99, 79, 60, 59, 25,
+5, -11, -26, -54, -26, -8, -13, 3, 25, 4,
+17, 16, 4, -24, -1, 42, 60, 63, 70, 37,
+10, -27, -22, -43, -62, -7, -16, 10, 75, 40,
+-26, -64, -96, -106, -3, 73, 73, 46, 55, 29,
+-2, -45, -43, 45, 46, 17, 37, 10, 30, 32,
+21, -2, -18, -28, -47, -63, -38, -56, -3, 27,
+-17, -48, -9, 9, 3, 28, 50, 58, 73, 44,
+8, -14, -32, -56, -81, -106, -35, 41, 53, 26,
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+-28, -67, -85, -71, -34, 0, 14, 12, -2, 4,
+-2, -33, -55, -37, 37, 25, 6, 6, 29, -4,
+-8, -25, -11, -9, 40, 23, 17, 25, 37, 12,
+-21, -27, 52, 60, 47, 58, 76, 70, 69, 38,
+23, 15, 22, -8, -32, -50, -10, 3, 31, 21,
+-10, -44, -67, -61, -29, -54, 8, 39, 21, 4,
+31, 18, 30, 36, 46, 28, 50, 42, 35, 13,
+-21, -57, -24, -16, -15, 14, 3, -25, -17, 20,
+23, 6, 24, 35, 90, 72, 64, 55, 55, 23,
+7, -28, -42, -19, -36, -50, -15, -40, 29, 28,
+-21, -59, -66, -59, -6, 85, 83, 53, 54, 26,
+2, -20, -42, -52, -27, -49, 5, 9, -9, -8,
+-18, -56, -84, -72, 24, 51, 32, 20, 13, -10,
+-13, -53, -64, -39, -63, -40, 24, 0, 34, 29,
+0, -31, -45, -63, -90, -53, 3, -18, -9, 24,
+-13, -57, -71, 27, 19, -3, 25, -3, 45, 35,
+12, -9, -26, -40, -51, -78, -24, 11, -9, -6,
+-12, -49, -45, -33, -50, -48, -46, -52, 2, 25,
+-14, -56, -84, -108, -122, -50, 4, 22, 42, 53,
+-6, -44, -54, -28, -41, -61, 19, 25, 6, 1,
+-32, -75, -95, -38, -1, -15, 7, 14, 23, 23,
+11, 12, 37, 30, 38, 51, 80, 80, 82, 47,
+-19, -56, -69, -82, -98, -64, -29, 2, 28, 42,
+-18, -49, 3, 34, 41, 39, 32, 18, 21, 7,
+-8, 23, 39, 30, 30, 27, 41, 36, 44, 23,
+-16, -49, -69, -46, 1, -27, 41, 48, 35, 15,
+6, -32, -36, 5, -17, -30, 2, -16, 51, 35,
+-23, -64, -91, -21, 71, 44, 52, 44, 40, 21,
+-22, -55, -40, -20, 62, 52, 38, 29, 27, 5,
+-27, -69, -75, -6, -8, 3, -2, -30, -42, 13,
+2, -29, -42, -10, 29, 2, 15, 30, 26, 0,
+-27, -69, -85, -75, -54, -8, -14, -31, 16, 42,
+-2, -44, -54, -75, -101, -6, 4, -3, 32, 13,
+7, -3, -22, -43, -14, -27, -24, -11, -14, -12,
+-18, -57, -85, -66, 47, 86, 75, 45, 42, 10,
+18, 3, 39, 76, 80, 48, 48, 41, 44, 21,
+-13, -51, -73, -22, -15, -41, 3, -4, -22, 3,
+-10, -50, -63, -9, -23, -42, -6, -30, 11, 28,
+15, -11, -29, -39, -57, -71, -23, -40, -33, 20,
+-2, -40, -48, -5, -21, -25, 31, 7, 53, 35,
+-19, -63, -72, 39, 34, 16, 37, 17, 54, 31,
+-18, -49, -28, -27, -40, -29, 4, 4, 19, 11,
+-1, -43, -41, 24, 15, -12, -4, -31, -4, 23,
+-11, -46, -79, -74, 34, 21, 9, 15, 3, -13,
+-16, -51, -56, -55, 8, 62, 50, 30, 43, 14,
+-1, -25, -27, -32, -46, -62, -66, -36, 53, 32,
+-12, -49, -77, -50, 2, -21, 23, 6, 14, 21,
+-5, -47, -58, -77, -105, -14, 30, 9, 73, 44,
+-24, -52, -4, 10, 13, 13, 27, 27, 42, 24,
+-10, -38, -27, -15, -24, -52, -53, 1, 14, -6,
+-17, -45, -13, 2, 19, 53, 83, 79, 76, 43,
+-21, -62, -86, -48, 40, 17, 14, -9, 40, 30,
+-1, -32, -51, -33, -3, -35, 2, 17, -2, -12,
+-21, -60, -85, -70, 33, 73, 58, 37, 67, 36,
+-1, -45, -39, 37, 17, 3, 18, -8, 53, 35,
+-8, -47, -65, -61, -87, -93, 9, 9, 2, 33,
+-13, -55, -56, -19, -29, 14, 17, 6, 55, 28,
+5, 1, -7, -23, -26, -56, -39, 14, 11, -13,
+-28, -69, -89, -74, -83, -45, 1, 0, 16, 45,
+-3, 5, 91, 104, 119, 111, 97, 76, 72, 39,
+19, 5, -12, -34, -41, -72, -67, 14, 21, 1,
+-17, -49, 15, 27, 13, 6, 2, 12, 27, 10,
+-10, -30, 18, 36, 93, 87, 87, 69, 58, 26,
+37, 32, 64, 54, 53, 67, 78, 73, 80, 48,
+48, 46, 38, 9, -1, 8, 47, 44, 58, 33,
+-23, -61, -88, -76, 27, 14, 9, 36, 36, 10,
+-24, -66, -88, -97, -55, 20, 19, 16, 52, 31,
+4, -16, -1, -8, 2, 0, 15, 13, 29, 14,
+-9, -44, -66, -72, 8, 32, 37, 38, 46, 16,
+-22, -65, -62, 30, 22, 51, 57, 45, 68, 38,
+-4, -42, -53, -33, -54, -53, -4, -18, 62, 40,
+-5, -37, -61, -41, 35, 15, -2, -3, -12, -28,
+-18, -65, -55, 90, 80, 49, 44, 21, 59, 36,
+5, -16, -31, -32, -37, -62, -19, -11, 9, 16,
+-22, -60, -67, -51, -61, -35, -5, -18, -27, 24,
+-18, -55, -39, -42, -40, 20, 25, 6, 6, 7,
+0, -25, -42, -50, -59, -84, -31, -13, -22, 17,
+-32, -73, -100, -89, -21, -10, 18, 38, 31, 23,
+-15, -54, -57, -13, -18, -41, -32, 17, 50, 21,
+-16, -57, -71, -10, -8, -26, -38, -47, 42, 25,
+-17, -58, -82, -7, 33, 3, 30, 11, 13, 24,
+-23, -61, -97, -83, 82, 81, 57, 39, 31, 2,
+26, 32, 104, 86, 62, 55, 77, 70, 74, 43,
+-8, -29, -33, -52, -74, -73, -17, 14, 39, 25,
+-21, -60, -68, -22, 43, 37, 51, 54, 64, 36,
+-5, -30, -50, -52, 22, 7, 10, 13, 0, -20,
+-15, -53, -61, -34, -50, -25, 15, 6, 0, -14,
+-10, -51, -60, 20, 77, 50, 34, 22, 8, -8,
+-8, -45, -52, -59, -76, -35, -43, -49, 47, 40,
+41, 44, 53, 40, 41, 30, 38, 31, 46, 24,
+19, 3, -15, -26, -16, -45, -13, 24, 18, -5,
+-3, -39, -54, -35, -49, -70, 2, -6, -19, 15,
+-13, -53, -36, 6, -3, 45, 50, 30, 33, 10,
+15, -25, -16, -4, -32, 7, 23, 6, 67, 36,
+-21, -58, -87, -71, 10, -12, -16, 19, 10, 0,
+9, -15, -6, 25, 31, 7, 30, 28, 20, 2,
+2, -28, -42, -50, -67, -75, 12, 12, -4, 8,
+-17, -63, -58, 56, 49, 36, 60, 38, 37, 14,
+-13, -48, -38, -29, -44, -25, -20, -33, 38, 20,
+2, -37, -42, -1, -18, -42, 3, -17, -19, 12,
+-20, -60, -73, -7, 12, -13, -22, -38, 4, 10,
+-8, -41, -63, -65, 42, 63, 45, 31, 31, 0,
+-4, -46, -38, -9, -35, 15, 50, 27, 67, 39,
+3, -7, -13, -34, -51, -47, 9, 39, 54, 29,
+-29, -71, -89, -52, -39, -6, 3, 2, 38, 28,
+-14, -42, -13, -15, -19, 0, 20, 12, 37, 25,
+11, -26, -24, -40, -65, -11, -13, -27, 65, 37,
+0, -31, -46, -17, -21, -45, 11, -2, 25, 24,
+51, 91, 102, 87, 85, 63, 57, 42, 48, 23,
+-4, -34, -56, -70, -10, -14, 4, 18, 3, -8,
+-23, -59, -39, -44, -42, -14, -10, -23, -4, 17,
+-2, 4, 35, 63, 69, 75, 82, 63, 78, 48,
+-17, -55, -60, -3, -4, -19, 4, -4, -18, -29,
+2, -20, -36, -50, -32, -59, -16, 30, 16, -6,
+-12, -47, 24, 68, 45, 46, 41, 32, 65, 37,
+-4, -40, -54, -67, -96, -66, -9, -25, 42, 38,
+-15, 13, 58, 58, 84, 104, 119, 104, 89, 51,
+-15, -24, -9, -24, -27, -50, -7, 28, 29, 6,
+-7, -33, -35, -49, -65, -53, -37, -10, 33, 14,
+31, 19, 46, 72, 67, 45, 83, 68, 63, 41,
+-14, -53, -59, -17, 55, 79, 64, 39, 43, 10,
+};
+
+const signed char cdbk_lsp2_vlbr[160]={
+-20, -30, -24, 17, 7, -13, -21, 61, 56, 16,
+12, 1, 10, 77, 32, 3, 7, 3, -25, -31,
+-4, 2, -36, -83, 18, 5, -5, 5, 11, 23,
+-2, -1, -11, -12, -20, -28, 68, 50, -17, -20,
+5, 2, 1, 20, 17, 4, -52, -66, 36, 24,
+-4, -10, 7, -15, -32, 80, 37, 8, -13, -29,
+33, 37, 28, 15, 8, 14, 35, 18, 50, 36,
+-4, -1, 4, -7, 3, 3, -11, -58, -75, 13,
+13, 21, 24, -11, -12, -38, -72, 33, 15, -12,
+-44, -17, 83, 21, 2, 7, 0, 4, 0, -1,
+-25, -42, -51, 33, 20, 15, 30, -13, 9, 32,
+6, 2, -8, 7, -38, -77, 6, -13, -7, 32,
+48, 57, 32, -12, -10, -4, 2, -15, -29, -29,
+2, 10, -9, -16, 79, 44, 7, 12, -5, -18,
+-23, -29, -35, -3, -3, -18, -34, -3, -39, -50,
+-5, -10, -8, -37, -76, 11, -4, -19, 30, 16,
+};
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-mdf.c b/pjmedia/src/pjmedia-codec/speex/z-mdf.c
new file mode 100644
index 00000000..7895927b
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-mdf.c
@@ -0,0 +1,741 @@
+/* Copyright (C) 2003-2006 Jean-Marc Valin
+
+   File: mdf.c
+   Echo canceller based on the MDF algorithm (see below)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+   The echo canceller is based on the MDF algorithm described in:
+
+   J. S. Soo, K. K. Pang Multidelay block frequency adaptive filter, 
+   IEEE Trans. Acoust. Speech Signal Process., Vol. ASSP-38, No. 2, 
+   February 1990.
+   
+   We use the Alternatively Updated MDF (AUMDF) variant. Robustness to 
+   double-talk is achieved using a variable learning rate as described in:
+   
+   Valin, J.-M., On Adjusting the Learning Rate in Frequency Domain Echo 
+   Cancellation With Double-Talk. Submitted to IEEE Transactions on Speech 
+   and Audio Processing, 2006.
+   
+   There is no explicit double-talk detection, but a continuous variation
+   in the learning rate based on residual echo, double-talk and background
+   noise.
+   
+   About the fixed-point version:
+   All the signals are represented with 16-bit words. The filter weights 
+   are represented with 32-bit words, but only the top 16 bits are used
+   in most cases. The lower 16 bits are completely unreliable (due to the
+   fact that the update is done only on the top bits), but help in the
+   adaptation -- probably by removing a "threshold effect" due to
+   quantization (rounding going to zero) when the gradient is small.
+   
+   Another kludge that seems to work good: when performing the weight
+   update, we only move half the way toward the "goal" this seems to
+   reduce the effect of quantization noise in the update phase. This
+   can be seen as applying a gradient descent on a "soft constraint"
+   instead of having a hard constraint.
+   
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "misc.h"
+#include "speex/speex_echo.h"
+#include "fftwrap.h"
+#include "pseudofloat.h"
+#include "math_approx.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define min(a,b) ((a)<(b) ? (a) : (b))
+#define max(a,b) ((a)>(b) ? (a) : (b))
+
+#ifdef FIXED_POINT
+#define WEIGHT_SHIFT 11
+#define NORMALIZE_SCALEDOWN 5
+#define NORMALIZE_SCALEUP 3
+#else
+#define WEIGHT_SHIFT 0
+#endif
+
+#ifdef FIXED_POINT
+static const spx_float_t MIN_LEAK = ((spx_float_t){16777, -24});
+#define TOP16(x) ((x)>>16)
+#else
+static const spx_float_t MIN_LEAK = .001f;
+#define TOP16(x) (x)
+#endif
+
+
+/** Speex echo cancellation state. */
+struct SpeexEchoState_ {
+   int frame_size;           /**< Number of samples processed each time */
+   int window_size;
+   int M;
+   int cancel_count;
+   int adapted;
+   spx_int32_t sampling_rate;
+   spx_word16_t spec_average;
+   spx_word16_t beta0;
+   spx_word16_t beta_max;
+   spx_word32_t sum_adapt;
+   spx_word16_t *e;
+   spx_word16_t *x;
+   spx_word16_t *X;
+   spx_word16_t *d;
+   spx_word16_t *y;
+   spx_word16_t *last_y;
+   spx_word32_t *Yps;
+   spx_word16_t *Y;
+   spx_word16_t *E;
+   spx_word32_t *PHI;
+   spx_word32_t *W;
+   spx_word32_t *power;
+   spx_float_t *power_1;
+   spx_word16_t *wtmp;
+#ifdef FIXED_POINT
+   spx_word16_t *wtmp2;
+#endif
+   spx_word32_t *Rf;
+   spx_word32_t *Yf;
+   spx_word32_t *Xf;
+   spx_word32_t *Eh;
+   spx_word32_t *Yh;
+   spx_float_t Pey;
+   spx_float_t Pyy;
+   spx_word16_t *window;
+   void *fft_table;
+   spx_word16_t memX, memD, memE;
+   spx_word16_t preemph;
+   spx_word16_t notch_radius;
+   spx_mem_t notch_mem[2];
+};
+
+static inline void filter_dc_notch16(spx_int16_t *in, spx_word16_t radius, spx_word16_t *out, int len, spx_mem_t *mem)
+{
+   int i;
+   spx_word16_t den2;
+#ifdef FIXED_POINT
+   den2 = MULT16_16_Q15(radius,radius) + MULT16_16_Q15(QCONST16(.7,15),MULT16_16_Q15(32767-radius,32767-radius));
+#else
+   den2 = radius*radius + .7*(1-radius)*(1-radius);
+#endif   
+   /*printf ("%d %d %d %d %d %d\n", num[0], num[1], num[2], den[0], den[1], den[2]);*/
+   for (i=0;i<len;i++)
+   {
+      spx_word16_t vin = in[i];
+      spx_word32_t vout = mem[0] + SHL32(EXTEND32(vin),15);
+#ifdef FIXED_POINT
+      mem[0] = mem[1] + SHL32(SHL32(-EXTEND32(vin),15) + MULT16_32_Q15(radius,vout),1);
+#else
+      mem[0] = mem[1] + 2*(-vin + radius*vout);
+#endif
+      mem[1] = SHL32(EXTEND32(vin),15) - MULT16_32_Q15(den2,vout);
+      out[i] = SATURATE32(PSHR32(MULT16_32_Q15(radius,vout),15),32767);
+   }
+}
+
+static inline spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
+{
+   spx_word32_t sum=0;
+   len >>= 2;
+   while(len--)
+   {
+      spx_word32_t part=0;
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      part = MAC16_16(part,*x++,*y++);
+      /* HINT: If you had a 40-bit accumulator, you could shift only at the end */
+      sum = ADD32(sum,SHR32(part,6));
+   }
+   return sum;
+}
+
+/** Compute power spectrum of a half-complex (packed) vector */
+static inline void power_spectrum(spx_word16_t *X, spx_word32_t *ps, int N)
+{
+   int i, j;
+   ps[0]=MULT16_16(X[0],X[0]);
+   for (i=1,j=1;i<N-1;i+=2,j++)
+   {
+      ps[j] =  MULT16_16(X[i],X[i]) + MULT16_16(X[i+1],X[i+1]);
+   }
+   ps[j]=MULT16_16(X[i],X[i]);
+}
+
+/** Compute cross-power spectrum of a half-complex (packed) vectors and add to acc */
+#ifdef FIXED_POINT
+static inline void spectral_mul_accum(spx_word16_t *X, spx_word32_t *Y, spx_word16_t *acc, int N, int M)
+{
+   int i,j;
+   spx_word32_t tmp1=0,tmp2=0;
+   for (j=0;j<M;j++)
+   {
+      tmp1 = MAC16_16(tmp1, X[j*N],TOP16(Y[j*N]));
+   }
+   acc[0] = PSHR32(tmp1,WEIGHT_SHIFT);
+   for (i=1;i<N-1;i+=2)
+   {
+      tmp1 = tmp2 = 0;
+      for (j=0;j<M;j++)
+      {
+         tmp1 = SUB32(MAC16_16(tmp1, X[j*N+i],TOP16(Y[j*N+i])), MULT16_16(X[j*N+i+1],TOP16(Y[j*N+i+1])));
+         tmp2 = MAC16_16(MAC16_16(tmp2, X[j*N+i+1],TOP16(Y[j*N+i])), X[j*N+i], TOP16(Y[j*N+i+1]));
+      }
+      acc[i] = PSHR32(tmp1,WEIGHT_SHIFT);
+      acc[i+1] = PSHR32(tmp2,WEIGHT_SHIFT);
+   }
+   tmp1 = tmp2 = 0;
+   for (j=0;j<M;j++)
+   {
+      tmp1 = MAC16_16(tmp1, X[(j+1)*N-1],TOP16(Y[(j+1)*N-1]));
+   }
+   acc[N-1] = PSHR32(tmp1,WEIGHT_SHIFT);
+}
+#else
+static inline void spectral_mul_accum(spx_word16_t *X, spx_word32_t *Y, spx_word16_t *acc, int N, int M)
+{
+   int i,j;
+   for (i=0;i<N;i++)
+      acc[i] = 0;
+   for (j=0;j<M;j++)
+   {
+      acc[0] += X[0]*Y[0];
+      for (i=1;i<N-1;i+=2)
+      {
+         acc[i] += (X[i]*Y[i] - X[i+1]*Y[i+1]);
+         acc[i+1] += (X[i+1]*Y[i] + X[i]*Y[i+1]);
+      }
+      acc[i] += X[i]*Y[i];
+      X += N;
+      Y += N;
+   }
+}
+#endif
+
+/** Compute weighted cross-power spectrum of a half-complex (packed) vector with conjugate */
+static inline void weighted_spectral_mul_conj(spx_float_t *w, spx_word16_t *X, spx_word16_t *Y, spx_word32_t *prod, int N)
+{
+   int i, j;
+   prod[0] = FLOAT_MUL32(w[0],MULT16_16(X[0],Y[0]));
+   for (i=1,j=1;i<N-1;i+=2,j++)
+   {
+      prod[i] = FLOAT_MUL32(w[j],MAC16_16(MULT16_16(X[i],Y[i]), X[i+1],Y[i+1]));
+      prod[i+1] = FLOAT_MUL32(w[j],MAC16_16(MULT16_16(-X[i+1],Y[i]), X[i],Y[i+1]));
+   }
+   prod[i] = FLOAT_MUL32(w[j],MULT16_16(X[i],Y[i]));
+}
+
+
+/** Creates a new echo canceller state */
+SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length)
+{
+   int i,N,M;
+   SpeexEchoState *st = (SpeexEchoState *)speex_alloc(sizeof(SpeexEchoState));
+
+   st->frame_size = frame_size;
+   st->window_size = 2*frame_size;
+   N = st->window_size;
+   M = st->M = (filter_length+st->frame_size-1)/frame_size;
+   st->cancel_count=0;
+   st->sum_adapt = 0;
+   /* FIXME: Make that an init option (new API call?) */
+   st->sampling_rate = 8000;
+   st->spec_average = DIV32_16(SHL32(st->frame_size, 15), st->sampling_rate);
+#ifdef FIXED_POINT
+   st->beta0 = DIV32_16(SHL32(st->frame_size, 16), st->sampling_rate);
+   st->beta_max = DIV32_16(SHL32(st->frame_size, 14), st->sampling_rate);
+#else
+   st->beta0 = (2.0f*st->frame_size)/st->sampling_rate;
+   st->beta_max = (.5f*st->frame_size)/st->sampling_rate;
+#endif
+
+   st->fft_table = spx_fft_init(N);
+   
+   st->e = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->x = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->d = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->y = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->Yps = (spx_word32_t*)speex_alloc(N*sizeof(spx_word32_t));
+   st->last_y = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->Yf = (spx_word32_t*)speex_alloc((st->frame_size+1)*sizeof(spx_word32_t));
+   st->Rf = (spx_word32_t*)speex_alloc((st->frame_size+1)*sizeof(spx_word32_t));
+   st->Xf = (spx_word32_t*)speex_alloc((st->frame_size+1)*sizeof(spx_word32_t));
+   st->Yh = (spx_word32_t*)speex_alloc((st->frame_size+1)*sizeof(spx_word32_t));
+   st->Eh = (spx_word32_t*)speex_alloc((st->frame_size+1)*sizeof(spx_word32_t));
+
+   st->X = (spx_word16_t*)speex_alloc(M*N*sizeof(spx_word16_t));
+   st->Y = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->E = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->W = (spx_word32_t*)speex_alloc(M*N*sizeof(spx_word32_t));
+   st->PHI = (spx_word32_t*)speex_alloc(M*N*sizeof(spx_word32_t));
+   st->power = (spx_word32_t*)speex_alloc((frame_size+1)*sizeof(spx_word32_t));
+   st->power_1 = (spx_float_t*)speex_alloc((frame_size+1)*sizeof(spx_float_t));
+   st->window = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   st->wtmp = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+#ifdef FIXED_POINT
+   st->wtmp2 = (spx_word16_t*)speex_alloc(N*sizeof(spx_word16_t));
+   for (i=0;i<N>>1;i++)
+   {
+      st->window[i] = (16383-SHL16(spx_cos(DIV32_16(MULT16_16(25736,i<<1),N)),1));
+      st->window[N-i-1] = st->window[i];
+   }
+#else
+   for (i=0;i<N;i++)
+      st->window[i] = .5-.5*cos(2*M_PI*i/N);
+#endif
+   for (i=0;i<N*M;i++)
+   {
+      st->W[i] = st->PHI[i] = 0;
+   }
+   st->memX=st->memD=st->memE=0;
+   st->preemph = QCONST16(.9,15);
+   if (st->sampling_rate<12000)
+      st->notch_radius = QCONST16(.9, 15);
+   else if (st->sampling_rate<24000)
+      st->notch_radius = QCONST16(.982, 15);
+   else
+      st->notch_radius = QCONST16(.992, 15);
+
+   st->notch_mem[0] = st->notch_mem[1] = 0;
+   st->adapted = 0;
+   st->Pey = st->Pyy = FLOAT_ONE;
+   return st;
+}
+
+/** Resets echo canceller state */
+void speex_echo_state_reset(SpeexEchoState *st)
+{
+   int i, M, N;
+   st->cancel_count=0;
+   N = st->window_size;
+   M = st->M;
+   for (i=0;i<N*M;i++)
+   {
+      st->W[i] = 0;
+      st->X[i] = 0;
+   }
+   for (i=0;i<=st->frame_size;i++)
+      st->power[i] = 0;
+   
+   st->adapted = 0;
+   st->sum_adapt = 0;
+   st->Pey = st->Pyy = FLOAT_ONE;
+
+}
+
+/** Destroys an echo canceller state */
+void speex_echo_state_destroy(SpeexEchoState *st)
+{
+   spx_fft_destroy(st->fft_table);
+
+   speex_free(st->e);
+   speex_free(st->x);
+   speex_free(st->d);
+   speex_free(st->y);
+   speex_free(st->last_y);
+   speex_free(st->Yps);
+   speex_free(st->Yf);
+   speex_free(st->Rf);
+   speex_free(st->Xf);
+   speex_free(st->Yh);
+   speex_free(st->Eh);
+
+   speex_free(st->X);
+   speex_free(st->Y);
+   speex_free(st->E);
+   speex_free(st->W);
+   speex_free(st->PHI);
+   speex_free(st->power);
+   speex_free(st->power_1);
+   speex_free(st->window);
+   speex_free(st->wtmp);
+#ifdef FIXED_POINT
+   speex_free(st->wtmp2);
+#endif
+   speex_free(st);
+}
+
+extern int fixed_point;
+/** Performs echo cancellation on a frame */
+void speex_echo_cancel(SpeexEchoState *st, short *ref, short *echo, short *out, spx_int32_t *Yout)
+{
+   int i,j;
+   int N,M;
+   spx_word32_t Syy,See;
+   spx_word16_t leak_estimate;
+   spx_word16_t ss, ss_1;
+   spx_float_t Pey = FLOAT_ONE, Pyy=FLOAT_ONE;
+   spx_float_t alpha, alpha_1;
+   spx_word16_t RER;
+   spx_word32_t tmp32;
+   spx_word16_t M_1;
+   
+   N = st->window_size;
+   M = st->M;
+   st->cancel_count++;
+#ifdef FIXED_POINT
+   ss=DIV32_16(11469,M);
+   ss_1 = SUB16(32767,ss);
+   M_1 = DIV32_16(32767,M);
+#else
+   ss=.35/M;
+   ss_1 = 1-ss;
+   M_1 = 1.f/M;
+#endif
+
+   filter_dc_notch16(ref, st->notch_radius, st->d, st->frame_size, st->notch_mem);
+   /* Copy input data to buffer */
+   for (i=0;i<st->frame_size;i++)
+   {
+      spx_word16_t tmp;
+      st->x[i] = st->x[i+st->frame_size];
+      st->x[i+st->frame_size] = SUB16(echo[i], MULT16_16_P15(st->preemph, st->memX));
+      st->memX = echo[i];
+      
+      tmp = st->d[i];
+      st->d[i] = st->d[i+st->frame_size];
+      st->d[i+st->frame_size] = SUB16(tmp, MULT16_16_P15(st->preemph, st->memD));
+      st->memD = tmp;
+   }
+
+   /* Shift memory: this could be optimized eventually*/
+   for (i=0;i<N*(M-1);i++)
+      st->X[i]=st->X[i+N];
+
+   /* Convert x (echo input) to frequency domain */
+   spx_fft(st->fft_table, st->x, &st->X[(M-1)*N]);
+   
+   /* Compute filter response Y */
+   spectral_mul_accum(st->X, st->W, st->Y, N, M);
+   
+   spx_ifft(st->fft_table, st->Y, st->y);
+
+#if 1
+   spectral_mul_accum(st->X, st->PHI, st->Y, N, M);   
+   spx_ifft(st->fft_table, st->Y, st->e);
+#endif
+
+   /* Compute error signal (for the output with de-emphasis) */ 
+   for (i=0;i<st->frame_size;i++)
+   {
+      spx_word32_t tmp_out;
+#if 1
+      spx_word16_t y = MULT16_16_Q15(st->window[i+st->frame_size],st->e[i+st->frame_size]) + MULT16_16_Q15(st->window[i],st->y[i+st->frame_size]);
+      tmp_out = SUB32(EXTEND32(st->d[i+st->frame_size]), EXTEND32(y));
+#else
+      tmp_out = SUB32(EXTEND32(st->d[i+st->frame_size]), EXTEND32(st->y[i+st->frame_size]));
+#endif
+
+      /* Saturation */
+      if (tmp_out>32767)
+         tmp_out = 32767;
+      else if (tmp_out<-32768)
+         tmp_out = -32768;
+      tmp_out = ADD32(tmp_out, EXTEND32(MULT16_16_P15(st->preemph, st->memE)));
+      out[i] = tmp_out;
+      st->memE = tmp_out;
+   }
+
+   /* Compute error signal (filter update version) */ 
+   for (i=0;i<st->frame_size;i++)
+   {
+      st->e[i] = 0;
+      st->e[i+st->frame_size] = st->d[i+st->frame_size] - st->y[i+st->frame_size];
+   }
+
+   /* Compute a bunch of correlations */
+   See = inner_prod(st->e+st->frame_size, st->e+st->frame_size, st->frame_size);
+   See = ADD32(See, SHR32(10000,6));
+   Syy = inner_prod(st->y+st->frame_size, st->y+st->frame_size, st->frame_size);
+   
+   /* Convert error to frequency domain */
+   spx_fft(st->fft_table, st->e, st->E);
+   for (i=0;i<st->frame_size;i++)
+      st->y[i] = 0;
+   spx_fft(st->fft_table, st->y, st->Y);
+
+   /* Compute power spectrum of echo (X), error (E) and filter response (Y) */
+   power_spectrum(st->E, st->Rf, N);
+   power_spectrum(st->Y, st->Yf, N);
+   power_spectrum(&st->X[(M-1)*N], st->Xf, N);
+   
+   /* Smooth echo energy estimate over time */
+   for (j=0;j<=st->frame_size;j++)
+      st->power[j] = MULT16_32_Q15(ss_1,st->power[j]) + 1 + MULT16_32_Q15(ss,st->Xf[j]);
+   
+   /* Enable this to compute the power based only on the tail (would need to compute more 
+      efficiently to make this really useful */
+   if (0)
+   {
+      float scale2 = .5f/M;
+      for (j=0;j<=st->frame_size;j++)
+         st->power[j] = 0;
+      for (i=0;i<M;i++)
+      {
+         power_spectrum(&st->X[i*N], st->Xf, N);
+         for (j=0;j<=st->frame_size;j++)
+            st->power[j] += scale2*st->Xf[j];
+      }
+   }
+
+   /* Compute filtered spectra and (cross-)correlations */
+   for (j=st->frame_size;j>=0;j--)
+   {
+      spx_float_t Eh, Yh;
+      Eh = PSEUDOFLOAT(st->Rf[j] - st->Eh[j]);
+      Yh = PSEUDOFLOAT(st->Yf[j] - st->Yh[j]);
+      Pey = FLOAT_ADD(Pey,FLOAT_MULT(Eh,Yh));
+      Pyy = FLOAT_ADD(Pyy,FLOAT_MULT(Yh,Yh));
+#ifdef FIXED_POINT
+      st->Eh[j] = MAC16_32_Q15(MULT16_32_Q15(SUB16(32767,st->spec_average),st->Eh[j]), st->spec_average, st->Rf[j]);
+      st->Yh[j] = MAC16_32_Q15(MULT16_32_Q15(SUB16(32767,st->spec_average),st->Yh[j]), st->spec_average, st->Yf[j]);
+#else
+      st->Eh[j] = (1-st->spec_average)*st->Eh[j] + st->spec_average*st->Rf[j];
+      st->Yh[j] = (1-st->spec_average)*st->Yh[j] + st->spec_average*st->Yf[j];
+#endif
+   }
+   
+   /* Compute correlation updatete rate */
+   tmp32 = MULT16_32_Q15(st->beta0,Syy);
+   if (tmp32 > MULT16_32_Q15(st->beta_max,See))
+      tmp32 = MULT16_32_Q15(st->beta_max,See);
+   alpha = FLOAT_DIV32(tmp32, See);
+   alpha_1 = FLOAT_SUB(FLOAT_ONE, alpha);
+   /* Update correlations (recursive average) */
+   st->Pey = FLOAT_ADD(FLOAT_MULT(alpha_1,st->Pey) , FLOAT_MULT(alpha,Pey));
+   st->Pyy = FLOAT_ADD(FLOAT_MULT(alpha_1,st->Pyy) , FLOAT_MULT(alpha,Pyy));
+   if (FLOAT_LT(st->Pyy, FLOAT_ONE))
+      st->Pyy = FLOAT_ONE;
+   /* We don't really hope to get better than 33 dB (MIN_LEAK-3dB) attenuation anyway */
+   if (FLOAT_LT(st->Pey, FLOAT_MULT(MIN_LEAK,st->Pyy)))
+      st->Pey = FLOAT_MULT(MIN_LEAK,st->Pyy);
+   if (FLOAT_GT(st->Pey, st->Pyy))
+      st->Pey = st->Pyy;
+   /* leak_estimate is the limear regression result */
+   leak_estimate = FLOAT_EXTRACT16(FLOAT_SHL(FLOAT_DIVU(st->Pey, st->Pyy),14));
+   if (leak_estimate > 16383)
+      leak_estimate = 32767;
+   else
+      leak_estimate = SHL16(leak_estimate,1);
+   /*printf ("%f\n", leak_estimate);*/
+   
+   /* Compute Residual to Error Ratio */
+#ifdef FIXED_POINT
+   tmp32 = MULT16_32_Q15(leak_estimate,Syy);
+   tmp32 = ADD32(tmp32, SHL32(tmp32,1));
+   if (tmp32 > SHR32(See,1))
+      tmp32 = SHR32(See,1);
+   RER = FLOAT_EXTRACT16(FLOAT_SHL(FLOAT_DIV32(tmp32,See),15));
+#else
+   RER = 3.*MULT16_32_Q15(leak_estimate,Syy) / See;
+   if (RER > .5)
+      RER = .5;
+#endif
+
+   /* We consider that the filter has had minimal adaptation if the following is true*/
+   if (!st->adapted && st->sum_adapt > QCONST32(1,15))
+   {
+      st->adapted = 1;
+   }
+
+   if (st->adapted)
+   {
+      for (i=0;i<=st->frame_size;i++)
+      {
+         spx_word32_t r, e;
+         /* Compute frequency-domain adaptation mask */
+         r = MULT16_32_Q15(leak_estimate,SHL32(st->Yf[i],3));
+         e = SHL32(st->Rf[i],3)+1;
+#ifdef FIXED_POINT
+         if (r>SHR32(e,1))
+            r = SHR32(e,1);
+#else
+         if (r>.5*e)
+            r = .5*e;
+#endif
+         r = MULT16_32_Q15(QCONST16(.8,15),r) + MULT16_32_Q15(QCONST16(.2,15),(spx_word32_t)(MULT16_32_Q15(RER,e)));
+         /*st->power_1[i] = adapt_rate*r/(e*(1+st->power[i]));*/
+         st->power_1[i] = FLOAT_SHL(FLOAT_DIV32_FLOAT(MULT16_32_Q15(M_1,r),FLOAT_MUL32U(e,st->power[i]+10)),WEIGHT_SHIFT+16);
+      }
+   } else {
+      spx_word32_t Sxx;
+      spx_word16_t adapt_rate=0;
+
+      Sxx = inner_prod(st->x+st->frame_size, st->x+st->frame_size, st->frame_size);
+      /* Temporary adaption rate if filter is not adapted correctly */
+
+      tmp32 = MULT16_32_Q15(QCONST16(.15f, 15), Sxx);
+#ifdef FIXED_POINT
+      if (Sxx > SHR32(See,2))
+         Sxx = SHR32(See,2);
+#else
+      if (Sxx > .25*See)
+         Sxx = .25*See;      
+#endif
+      adapt_rate = FLOAT_EXTRACT16(FLOAT_SHL(FLOAT_DIV32(MULT16_32_Q15(M_1,Sxx), See),15));
+      
+      for (i=0;i<=st->frame_size;i++)
+         st->power_1[i] = FLOAT_SHL(FLOAT_DIV32(EXTEND32(adapt_rate),ADD32(st->power[i],10)),WEIGHT_SHIFT+1);
+
+
+      /* How much have we adapted so far? */
+      st->sum_adapt = ADD32(st->sum_adapt,adapt_rate);
+   }
+   /* Compute weight gradient */
+   for (j=0;j<M;j++)
+   {
+      weighted_spectral_mul_conj(st->power_1, &st->X[j*N], st->E, st->PHI+N*j, N);
+   }
+
+   /* Gradient descent */
+   for (i=0;i<M*N;i++)
+   {
+      st->W[i] += st->PHI[i];
+      /* Old value of W in PHI */
+      st->PHI[i] = st->W[i] - st->PHI[i];
+   }
+   
+   /* Update weight to prevent circular convolution (MDF / AUMDF) */
+   for (j=0;j<M;j++)
+   {
+      /* This is a variant of the Alternatively Updated MDF (AUMDF) */
+      /* Remove the "if" to make this an MDF filter */
+      if (j==M-1 || st->cancel_count%(M-1) == j)
+      {
+#ifdef FIXED_POINT
+         for (i=0;i<N;i++)
+            st->wtmp2[i] = PSHR32(st->W[j*N+i],NORMALIZE_SCALEDOWN+16);
+         spx_ifft(st->fft_table, st->wtmp2, st->wtmp);
+         for (i=0;i<st->frame_size;i++)
+         {
+            st->wtmp[i]=0;
+         }
+         for (i=st->frame_size;i<N;i++)
+         {
+            st->wtmp[i]=SHL(st->wtmp[i],NORMALIZE_SCALEUP);
+         }
+         spx_fft(st->fft_table, st->wtmp, st->wtmp2);
+         /* The "-1" in the shift is a sort of kludge that trades less efficient update speed for decrease noise */
+         for (i=0;i<N;i++)
+            st->W[j*N+i] -= SHL32(st->wtmp2[i],16+NORMALIZE_SCALEDOWN-NORMALIZE_SCALEUP-1);
+#else
+         spx_ifft(st->fft_table, &st->W[j*N], st->wtmp);
+         for (i=st->frame_size;i<N;i++)
+         {
+            st->wtmp[i]=0;
+         }
+         spx_fft(st->fft_table, st->wtmp, &st->W[j*N]);
+#endif
+      }
+   }
+
+   /* Compute spectrum of estimated echo for use in an echo post-filter (if necessary)*/
+   if (Yout)
+   {
+      spx_word16_t leak2;
+      if (st->adapted)
+      {
+         /* If the filter is adapted, take the filtered echo */
+         for (i=0;i<st->frame_size;i++)
+            st->last_y[i] = st->last_y[st->frame_size+i];
+         for (i=0;i<st->frame_size;i++)
+            st->last_y[st->frame_size+i] = ref[i]-out[i];
+      } else {
+         /* If filter isn't adapted yet, all we can do is take the echo signal directly */
+         for (i=0;i<N;i++)
+            st->last_y[i] = st->x[i];
+      }
+      
+      /* Apply hanning window (should pre-compute it)*/
+      for (i=0;i<N;i++)
+         st->y[i] = MULT16_16_Q15(st->window[i],st->last_y[i]);
+      
+      /* Compute power spectrum of the echo */
+      spx_fft(st->fft_table, st->y, st->Y);
+      power_spectrum(st->Y, st->Yps, N);
+      
+#ifdef FIXED_POINT
+      if (leak_estimate > 16383)
+         leak2 = 32767;
+      else
+         leak2 = SHL16(leak_estimate, 1);
+#else
+      if (leak_estimate>.5)
+         leak2 = 1;
+      else
+         leak2 = 2*leak_estimate;
+#endif
+      /* Estimate residual echo */
+      for (i=0;i<=st->frame_size;i++)
+         Yout[i] = MULT16_32_Q15(leak2,st->Yps[i]);
+   }
+}
+
+
+int speex_echo_ctl(SpeexEchoState *st, int request, void *ptr)
+{
+   switch(request)
+   {
+      
+      case SPEEX_ECHO_GET_FRAME_SIZE:
+         (*(int*)ptr) = st->frame_size;
+         break;
+      case SPEEX_ECHO_SET_SAMPLING_RATE:
+         st->sampling_rate = (*(int*)ptr);
+         st->spec_average = DIV32_16(SHL32(st->frame_size, 15), st->sampling_rate);
+#ifdef FIXED_POINT
+         st->beta0 = DIV32_16(SHL32(st->frame_size, 16), st->sampling_rate);
+         st->beta_max = DIV32_16(SHL32(st->frame_size, 14), st->sampling_rate);
+#else
+         st->beta0 = (2.0f*st->frame_size)/st->sampling_rate;
+         st->beta_max = (.5f*st->frame_size)/st->sampling_rate;
+#endif
+         if (st->sampling_rate<12000)
+            st->notch_radius = QCONST16(.9, 15);
+         else if (st->sampling_rate<24000)
+            st->notch_radius = QCONST16(.982, 15);
+         else
+            st->notch_radius = QCONST16(.992, 15);
+         break;
+      case SPEEX_ECHO_GET_SAMPLING_RATE:
+         (*(int*)ptr) = st->sampling_rate;
+         break;
+      default:
+         speex_warning_int("Unknown speex_echo_ctl request: ", request);
+         return -1;
+   }
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.c b/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.c
new file mode 100644
index 00000000..71f41812
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.c
@@ -0,0 +1,184 @@
+/* Copyright (C) 2005 Jean-Marc Valin */
+/**
+  @file pcm_wrapper.c
+  @brief PCM encoding wrapped as a Speex mode
+ */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "speex/pcm_wrapper.h"
+#include "misc.h"
+
+
+typedef struct {
+   const SpeexMode *mode;
+   int frame_size;
+   int format;
+} PCMState;
+
+/** Initializes encoder state*/
+static void *pcm_encoder_init(const SpeexMode *m)
+{
+   PCMState *st = (PCMState*)speex_alloc(sizeof(PCMState));
+   st->mode = m;
+   st->frame_size = 64;
+   return st;
+}
+
+/** De-allocates encoder state resources*/
+static void pcm_encoder_destroy(void *state)
+{
+   speex_free(state);
+}
+
+/** Encodes one frame*/
+static int pcm_encode(void *state, void *vin, SpeexBits *bits)
+{
+   int i;
+   PCMState *st = (PCMState*)state;
+   spx_word16_t *in = vin;
+   for (i=0;i<st->frame_size;i++)
+   {
+      spx_int16_t x;
+      x = in[i];
+      speex_bits_pack(bits, x, 16);
+   }
+   return 0;
+}
+
+/** Initializes decoder state*/
+static void *pcm_decoder_init(const SpeexMode *m)
+{
+   PCMState *st = (PCMState*)speex_alloc(sizeof(PCMState));
+   st->mode = m;
+   st->frame_size = 64;
+   return st;
+}
+
+/** De-allocates decoder state resources*/
+static void pcm_decoder_destroy(void *state)
+{
+   speex_free(state);
+}
+
+/** Decodes one frame*/
+static int pcm_decode(void *state, SpeexBits *bits, void *vout)
+{
+   int i;
+   PCMState *st = (PCMState*)state;
+   spx_word16_t *out = vout;
+   for (i=0;i<st->frame_size;i++)
+   {
+      spx_int16_t x;
+      x = speex_bits_unpack_signed(bits, 16);
+      out[i] = x;
+   }
+   return 0;
+}
+
+/** ioctl-like function for controlling a narrowband encoder */
+static int pcm_encoder_ctl(void *state, int request, void *ptr)
+{
+   PCMState *st;
+   st=(PCMState*)state;
+   switch(request)
+   {
+      case PCM_SET_FRAME_SIZE:
+         st->frame_size = (*(int*)ptr);
+         break;
+      case PCM_GET_FRAME_SIZE:
+         (*(int*)ptr) = st->frame_size;
+         break;
+      default:
+         speex_warning_int("Unknown nb_ctl request: ", request);
+         return -1;
+   }
+   return 0;
+}
+
+/** ioctl-like function for controlling a narrowband decoder */
+static int pcm_decoder_ctl(void *state, int request, void *ptr)
+{
+   PCMState *st;
+   st=(PCMState*)state;
+   switch(request)
+   {
+      case PCM_SET_FRAME_SIZE:
+         st->frame_size = (*(int*)ptr);
+         break;
+      case PCM_GET_FRAME_SIZE:
+         (*(int*)ptr) = st->frame_size;
+         break;
+      default:
+         speex_warning_int("Unknown nb_ctl request: ", request);
+         return -1;
+   }
+   return 0;
+}
+
+typedef struct {
+} PCMMode;
+
+static PCMMode pcmmode;
+
+int pcm_mode_query(const void *mode, int request, void *ptr)
+{
+   /*const PCMMode *m = (const PCMMode*)mode;*/
+   
+   switch (request)
+   {
+      default:
+         speex_warning_int("Unknown nb_mode_query request: ", request);
+         return -1;
+   }
+   return 0;
+}
+/* Default mode for narrowband */
+const SpeexMode pcm_wrapper_mode = {
+   &pcmmode,
+   pcm_mode_query,
+   "PCM",
+   0,
+   4,
+   &pcm_encoder_init,
+   &pcm_encoder_destroy,
+   &pcm_encode,
+   &pcm_decoder_init,
+   &pcm_decoder_destroy,
+   &pcm_decode,
+   &pcm_encoder_ctl,
+   &pcm_decoder_ctl,
+};
+
+const SpeexMode *speex_pcm_wrapper = &pcm_wrapper_mode;
diff --git a/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.h b/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.h
new file mode 100644
index 00000000..1f850b93
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-pcm_wrapper.h
@@ -0,0 +1,62 @@
+/* Copyright (C) 2005 Jean-Marc Valin */
+/**
+  @file pcm_wrapper.h
+  @brief PCM encoding wrapped as a Speex mode
+ */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+
+#ifndef PCM_WRAPPER_H
+#define PCM_WRAPPER_H
+
+#include "speex.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PCM_SET_FRAME_SIZE 2
+#define PCM_GET_FRAME_SIZE 3
+
+#define PCM_SET_FORMAT 2000
+#define PCM_GET_FORMAT 2001
+
+/** PCM wrapper mode */
+extern const SpeexMode *speex_pcm_wrapper;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-testdenoise.c b/pjmedia/src/pjmedia-codec/speex/z-testdenoise.c
new file mode 100644
index 00000000..177227d7
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-testdenoise.c
@@ -0,0 +1,44 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex_preprocess.h>
+#include <stdio.h>
+
+#define NN 160
+
+int main()
+{
+   short in[NN];
+   int i;
+   SpeexPreprocessState *st;
+   int count=0;
+   float f;
+
+   st = speex_preprocess_state_init(NN, 8000);
+   i=1;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_DENOISE, &i);
+   i=0;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_AGC, &i);
+   f=8000;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_AGC_LEVEL, &f);
+   i=0;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_DEREVERB, &i);
+   f=.4;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_DEREVERB_DECAY, &f);
+   f=.3;
+   speex_preprocess_ctl(st, SPEEX_PREPROCESS_SET_DEREVERB_LEVEL, &f);
+   while (1)
+   {
+      int vad;
+      fread(in, sizeof(short), NN, stdin);
+      if (feof(stdin))
+         break;
+      vad = speex_preprocess(st, in, NULL);
+      /*fprintf (stderr, "%d\n", vad);*/
+      fwrite(in, sizeof(short), NN, stdout);
+      count++;
+   }
+   speex_preprocess_state_destroy(st);
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-testecho.c b/pjmedia/src/pjmedia-codec/speex/z-testecho.c
new file mode 100644
index 00000000..f78499ee
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-testecho.c
@@ -0,0 +1,53 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "speex/speex_echo.h"
+#include "speex/speex_preprocess.h"
+
+
+#define NN 128
+#define TAIL 1024
+
+int main(int argc, char **argv)
+{
+   int echo_fd, ref_fd, e_fd;
+   spx_int32_t noise[NN+1];
+   short echo_buf[NN], ref_buf[NN], e_buf[NN];
+   SpeexEchoState *st;
+   SpeexPreprocessState *den;
+
+   if (argc != 4)
+   {
+      fprintf (stderr, "testecho mic_signal.sw speaker_signal.sw output.sw\n");
+      exit(1);
+   }
+   echo_fd = open (argv[2], O_RDONLY);
+   ref_fd  = open (argv[1],  O_RDONLY);
+   e_fd    = open (argv[3], O_WRONLY | O_CREAT | O_TRUNC, 0644);
+
+   st = speex_echo_state_init(NN, TAIL);
+   den = speex_preprocess_state_init(NN, 8000);
+   int tmp = 8000;
+   speex_echo_ctl(st, SPEEX_ECHO_SET_SAMPLING_RATE, &tmp);
+
+   while (read(ref_fd, ref_buf, NN*2))
+   {
+      read(echo_fd, echo_buf, NN*2);
+      speex_echo_cancel(st, ref_buf, echo_buf, e_buf, noise);
+      /*speex_preprocess(den, e_buf, noise);*/
+      write(e_fd, e_buf, NN*2);
+   }
+   speex_echo_state_destroy(st);
+   speex_preprocess_state_destroy(den);
+   close(e_fd);
+   close(echo_fd);
+   close(ref_fd);
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-testenc.c b/pjmedia/src/pjmedia-codec/speex/z-testenc.c
new file mode 100644
index 00000000..e0349591
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-testenc.c
@@ -0,0 +1,134 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <speex/speex_callbacks.h>
+
+#ifdef FIXED_DEBUG
+extern long long spx_mips;
+#endif
+
+#define FRAME_SIZE 160
+#include <math.h>
+int main(int argc, char **argv)
+{
+   char *inFile, *outFile, *bitsFile;
+   FILE *fin, *fout, *fbits=NULL;
+   short in_short[FRAME_SIZE];
+   short out_short[FRAME_SIZE];
+   float sigpow,errpow,snr, seg_snr=0;
+   int snr_frames = 0;
+   char cbits[200];
+   int nbBits;
+   int i;
+   void *st;
+   void *dec;
+   SpeexBits bits;
+   int tmp;
+   int bitCount=0;
+   int skip_group_delay;
+   SpeexCallback callback;
+
+   sigpow = 0;
+   errpow = 0;
+
+   st = speex_encoder_init(&speex_nb_mode);
+   dec = speex_decoder_init(&speex_nb_mode);
+
+   callback.callback_id = SPEEX_INBAND_CHAR;
+   callback.func = speex_std_char_handler;
+   callback.data = stderr;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
+   callback.func = speex_std_mode_request_handler;
+   callback.data = st;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   tmp=0;
+   speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
+   tmp=0;
+   speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
+   tmp=8;
+   speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
+   tmp=1;
+   speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
+
+   speex_mode_query(&speex_nb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
+   fprintf (stderr, "frame size: %d\n", tmp);
+   skip_group_delay = tmp / 2;
+
+   if (argc != 4 && argc != 3)
+   {
+      fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
+      exit(1);
+   }
+   inFile = argv[1];
+   fin = fopen(inFile, "r");
+   outFile = argv[2];
+   fout = fopen(outFile, "w+");
+   if (argc==4)
+   {
+      bitsFile = argv[3];
+      fbits = fopen(bitsFile, "w");
+   }
+   speex_bits_init(&bits);
+   while (!feof(fin))
+   {
+      fread(in_short, sizeof(short), FRAME_SIZE, fin);
+      if (feof(fin))
+         break;
+      speex_bits_reset(&bits);
+
+      speex_encode_int(st, in_short, &bits);
+      nbBits = speex_bits_write(&bits, cbits, 200);
+      bitCount+=bits.nbBits;
+
+      if (argc==4)
+         fwrite(cbits, 1, nbBits, fbits);
+      speex_bits_rewind(&bits);
+
+      speex_decode_int(dec, &bits, out_short);
+      speex_bits_reset(&bits);
+
+      fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
+      skip_group_delay = 0;
+   }
+   fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
+   speex_encoder_destroy(st);
+   speex_decoder_destroy(dec);
+   speex_bits_destroy(&bits);
+
+   rewind(fin);
+   rewind(fout);
+
+   while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin) 
+           &&
+           FRAME_SIZE ==  fread(out_short, sizeof(short), FRAME_SIZE,fout) )
+   {
+	float s=0, e=0;
+        for (i=0;i<FRAME_SIZE;++i) {
+            s += (float)in_short[i] * in_short[i];
+            e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
+        }
+	seg_snr += 10*log10((s+160)/(e+160));
+	sigpow += s;
+	errpow += e;
+	snr_frames++;
+   }
+   fclose(fin);
+   fclose(fout);
+
+   snr = 10 * log10( sigpow / errpow );
+   seg_snr /= snr_frames;
+   fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
+
+#ifdef FIXED_DEBUG
+   printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));
+#endif
+   
+   return 0;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-testenc_uwb.c b/pjmedia/src/pjmedia-codec/speex/z-testenc_uwb.c
new file mode 100644
index 00000000..bb2081d9
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-testenc_uwb.c
@@ -0,0 +1,136 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <speex/speex_callbacks.h>
+
+#ifdef FIXED_DEBUG
+extern long long spx_mips;
+#endif
+
+#define FRAME_SIZE 640
+#include <math.h>
+int main(int argc, char **argv)
+{
+   char *inFile, *outFile, *bitsFile;
+   FILE *fin, *fout, *fbits=NULL;
+   short in_short[FRAME_SIZE];
+   short out_short[FRAME_SIZE];
+   float in_float[FRAME_SIZE];
+   float sigpow,errpow,snr, seg_snr=0;
+   int snr_frames = 0;
+   char cbits[200];
+   int nbBits;
+   int i;
+   void *st;
+   void *dec;
+   SpeexBits bits;
+   int tmp;
+   int bitCount=0;
+   int skip_group_delay;
+   SpeexCallback callback;
+
+   sigpow = 0;
+   errpow = 0;
+
+   st = speex_encoder_init(&speex_uwb_mode);
+   dec = speex_decoder_init(&speex_uwb_mode);
+
+   callback.callback_id = SPEEX_INBAND_CHAR;
+   callback.func = speex_std_char_handler;
+   callback.data = stderr;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
+   callback.func = speex_std_mode_request_handler;
+   callback.data = st;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   tmp=0;
+   speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
+   tmp=0;
+   speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
+   tmp=7;
+   speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
+   tmp=1;
+   speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
+
+   speex_mode_query(&speex_nb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
+   fprintf (stderr, "frame size: %d\n", tmp);
+   skip_group_delay = 509;
+
+   if (argc != 4 && argc != 3)
+   {
+      fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
+      exit(1);
+   }
+   inFile = argv[1];
+   fin = fopen(inFile, "r");
+   outFile = argv[2];
+   fout = fopen(outFile, "w+");
+   if (argc==4)
+   {
+      bitsFile = argv[3];
+      fbits = fopen(bitsFile, "w");
+   }
+   speex_bits_init(&bits);
+   while (!feof(fin))
+   {
+      fread(in_short, sizeof(short), FRAME_SIZE, fin);
+      if (feof(fin))
+         break;
+      for (i=0;i<FRAME_SIZE;i++)
+         in_float[i]=in_short[i];
+      speex_bits_reset(&bits);
+
+      speex_encode_int(st, in_short, &bits);
+      nbBits = speex_bits_write(&bits, cbits, 200);
+      bitCount+=bits.nbBits;
+
+      if (argc==4)
+         fwrite(cbits, 1, nbBits, fbits);
+      speex_bits_rewind(&bits);
+
+      speex_decode_int(dec, &bits, out_short);
+      speex_bits_reset(&bits);
+
+      fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
+      skip_group_delay = 0;
+   }
+   fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
+   speex_encoder_destroy(st);
+   speex_decoder_destroy(dec);
+
+   rewind(fin);
+   rewind(fout);
+
+   while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin) 
+           &&
+           FRAME_SIZE ==  fread(out_short, sizeof(short), FRAME_SIZE,fout) )
+   {
+	float s=0, e=0;
+        for (i=0;i<FRAME_SIZE;++i) {
+            s += (float)in_short[i] * in_short[i];
+            e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
+        }
+	seg_snr += 10*log10((s+1)/(e+1));
+	sigpow += s;
+	errpow += e;
+	snr_frames++;
+   }
+   fclose(fin);
+   fclose(fout);
+
+   snr = 10 * log10( sigpow / errpow );
+   seg_snr /= snr_frames;
+   fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
+
+#ifdef FIXED_DEBUG
+   printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));
+#endif
+   
+   return 1;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-testenc_wb.c b/pjmedia/src/pjmedia-codec/speex/z-testenc_wb.c
new file mode 100644
index 00000000..8d37d396
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-testenc_wb.c
@@ -0,0 +1,142 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <speex/speex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <speex/speex_callbacks.h>
+
+#ifdef FIXED_DEBUG
+extern long long spx_mips;
+#endif
+
+#define FRAME_SIZE 320
+#include <math.h>
+int main(int argc, char **argv)
+{
+   char *inFile, *outFile, *bitsFile;
+   FILE *fin, *fout, *fbits=NULL;
+   short in_short[FRAME_SIZE];
+   short out_short[FRAME_SIZE];
+   float in_float[FRAME_SIZE];
+   float sigpow,errpow,snr, seg_snr=0;
+   int snr_frames = 0;
+   char cbits[200];
+   int nbBits;
+   int i;
+   void *st;
+   void *dec;
+   SpeexBits bits;
+   int tmp;
+   int bitCount=0;
+   int skip_group_delay;
+   SpeexCallback callback;
+
+   sigpow = 0;
+   errpow = 0;
+
+   st = speex_encoder_init(&speex_wb_mode);
+   dec = speex_decoder_init(&speex_wb_mode);
+
+   callback.callback_id = SPEEX_INBAND_CHAR;
+   callback.func = speex_std_char_handler;
+   callback.data = stderr;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
+   callback.func = speex_std_mode_request_handler;
+   callback.data = st;
+   speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
+
+   tmp=0;
+   speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
+   tmp=0;
+   speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
+   tmp=8;
+   speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
+   tmp=2;
+   speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
+   tmp=3;
+   speex_encoder_ctl(st, SPEEX_SET_HIGH_MODE, &tmp);
+   tmp=6;
+   speex_encoder_ctl(st, SPEEX_SET_LOW_MODE, &tmp);
+
+
+   speex_mode_query(&speex_wb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
+   fprintf (stderr, "frame size: %d\n", tmp);
+   skip_group_delay = 223;
+
+   if (argc != 4 && argc != 3)
+   {
+      fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
+      exit(1);
+   }
+   inFile = argv[1];
+   fin = fopen(inFile, "r");
+   outFile = argv[2];
+   fout = fopen(outFile, "w+");
+   if (argc==4)
+   {
+      bitsFile = argv[3];
+      fbits = fopen(bitsFile, "w");
+   }
+   speex_bits_init(&bits);
+   while (!feof(fin))
+   {
+      fread(in_short, sizeof(short), FRAME_SIZE, fin);
+      if (feof(fin))
+         break;
+      for (i=0;i<FRAME_SIZE;i++)
+         in_float[i]=in_short[i];
+      speex_bits_reset(&bits);
+
+      speex_encode_int(st, in_short, &bits);
+      nbBits = speex_bits_write(&bits, cbits, 200);
+      bitCount+=bits.nbBits;
+
+      if (argc==4)
+         fwrite(cbits, 1, nbBits, fbits);
+      speex_bits_rewind(&bits);
+
+      speex_decode_int(dec, &bits, out_short);
+      speex_bits_reset(&bits);
+
+      fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
+      skip_group_delay = 0;
+   }
+   fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
+   speex_encoder_destroy(st);
+   speex_decoder_destroy(dec);
+   speex_bits_destroy(&bits);
+
+   rewind(fin);
+   rewind(fout);
+
+   while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin) 
+           &&
+           FRAME_SIZE ==  fread(out_short, sizeof(short), FRAME_SIZE,fout) )
+   {
+	float s=0, e=0;
+        for (i=0;i<FRAME_SIZE;++i) {
+            s += (float)in_short[i] * in_short[i];
+            e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
+        }
+	seg_snr += 10*log10((s+160)/(e+160));
+	sigpow += s;
+	errpow += e;
+	snr_frames++;
+   }
+   fclose(fin);
+   fclose(fout);
+
+   snr = 10 * log10( sigpow / errpow );
+   seg_snr /= snr_frames;
+   fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
+
+#ifdef FIXED_DEBUG
+   printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));
+#endif
+   
+   return 1;
+}
diff --git a/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.c b/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.c
new file mode 100644
index 00000000..6aac56f2
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.c
@@ -0,0 +1,508 @@
+/* Copyright (C) 2005 Jean-Marc Valin, CSIRO, Christopher Montgomery
+   File: vorbis_psy.c
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef VORBIS_PSYCHO
+
+#include "misc.h"
+#include "smallft.h"
+#include "lpc.h"
+#include "vorbis_psy.h"
+
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+
+/* psychoacoustic setup ********************************************/
+
+static VorbisPsyInfo example_tuning = {
+  
+  .5,.5,  
+  3,3,25,
+  
+  /*63     125     250     500      1k      2k      4k      8k     16k*/
+  // vorbis mode 4 style
+  //{-32,-32,-32,-32,-28,-24,-22,-20,-20, -20, -20, -8, -6, -6, -6, -6, -6},
+  { -4, -6, -6, -6, -6, -6, -6, -6, -8, -8,-10,-10, -8, -6, -4, -4, -2},
+  
+  {
+    0, 1, 2, 3, 4, 5, 5,  5,     /* 7dB */
+    6, 6, 6, 5, 4, 4, 4,  4,     /* 15dB */
+    4, 4, 5, 5, 5, 6, 6,  6,     /* 23dB */
+    7, 7, 7, 8, 8, 8, 9, 10,     /* 31dB */
+    11,12,13,14,15,16,17, 18,     /* 39dB */
+  }
+
+};
+
+
+
+/* there was no great place to put this.... */
+#include <stdio.h>
+static void _analysis_output(char *base,int i,float *v,int n,int bark,int dB){
+  int j;
+  FILE *of;
+  char buffer[80];
+
+  sprintf(buffer,"%s_%d.m",base,i);
+  of=fopen(buffer,"w");
+  
+  if(!of)perror("failed to open data dump file");
+  
+  for(j=0;j<n;j++){
+    if(bark){
+      float b=toBARK((4000.f*j/n)+.25);
+      fprintf(of,"%f ",b);
+    }else
+      fprintf(of,"%f ",(double)j);
+    
+    if(dB){
+      float val;
+      if(v[j]==0.)
+	val=-140.;
+      else
+	val=todB(v[j]);
+      fprintf(of,"%f\n",val);
+    }else{
+      fprintf(of,"%f\n",v[j]);
+    }
+  }
+  fclose(of);
+}
+
+static void bark_noise_hybridmp(int n,const long *b,
+                                const float *f,
+                                float *noise,
+                                const float offset,
+                                const int fixed){
+  
+  float *N=alloca(n*sizeof(*N));
+  float *X=alloca(n*sizeof(*N));
+  float *XX=alloca(n*sizeof(*N));
+  float *Y=alloca(n*sizeof(*N));
+  float *XY=alloca(n*sizeof(*N));
+
+  float tN, tX, tXX, tY, tXY;
+  int i;
+
+  int lo, hi;
+  float R, A, B, D;
+  float w, x, y;
+
+  tN = tX = tXX = tY = tXY = 0.f;
+
+  y = f[0] + offset;
+  if (y < 1.f) y = 1.f;
+
+  w = y * y * .5;
+    
+  tN += w;
+  tX += w;
+  tY += w * y;
+
+  N[0] = tN;
+  X[0] = tX;
+  XX[0] = tXX;
+  Y[0] = tY;
+  XY[0] = tXY;
+
+  for (i = 1, x = 1.f; i < n; i++, x += 1.f) {
+    
+    y = f[i] + offset;
+    if (y < 1.f) y = 1.f;
+
+    w = y * y;
+    
+    tN += w;
+    tX += w * x;
+    tXX += w * x * x;
+    tY += w * y;
+    tXY += w * x * y;
+
+    N[i] = tN;
+    X[i] = tX;
+    XX[i] = tXX;
+    Y[i] = tY;
+    XY[i] = tXY;
+  }
+  
+  for (i = 0, x = 0.f;; i++, x += 1.f) {
+    
+    lo = b[i] >> 16;
+    if( lo>=0 ) break;
+    hi = b[i] & 0xffff;
+    
+    tN = N[hi] + N[-lo];
+    tX = X[hi] - X[-lo];
+    tXX = XX[hi] + XX[-lo];
+    tY = Y[hi] + Y[-lo];    
+    tXY = XY[hi] - XY[-lo];
+    
+    A = tY * tXX - tX * tXY;
+    B = tN * tXY - tX * tY;
+    D = tN * tXX - tX * tX;
+    R = (A + x * B) / D;
+    if (R < 0.f)
+      R = 0.f;
+    
+    noise[i] = R - offset;
+  }
+  
+  for ( ;; i++, x += 1.f) {
+    
+    lo = b[i] >> 16;
+    hi = b[i] & 0xffff;
+    if(hi>=n)break;
+    
+    tN = N[hi] - N[lo];
+    tX = X[hi] - X[lo];
+    tXX = XX[hi] - XX[lo];
+    tY = Y[hi] - Y[lo];
+    tXY = XY[hi] - XY[lo];
+    
+    A = tY * tXX - tX * tXY;
+    B = tN * tXY - tX * tY;
+    D = tN * tXX - tX * tX;
+    R = (A + x * B) / D;
+    if (R < 0.f) R = 0.f;
+    
+    noise[i] = R - offset;
+  }
+  for ( ; i < n; i++, x += 1.f) {
+    
+    R = (A + x * B) / D;
+    if (R < 0.f) R = 0.f;
+    
+    noise[i] = R - offset;
+  }
+  
+  if (fixed <= 0) return;
+  
+  for (i = 0, x = 0.f;; i++, x += 1.f) {
+    hi = i + fixed / 2;
+    lo = hi - fixed;
+    if(lo>=0)break;
+
+    tN = N[hi] + N[-lo];
+    tX = X[hi] - X[-lo];
+    tXX = XX[hi] + XX[-lo];
+    tY = Y[hi] + Y[-lo];
+    tXY = XY[hi] - XY[-lo];
+    
+    
+    A = tY * tXX - tX * tXY;
+    B = tN * tXY - tX * tY;
+    D = tN * tXX - tX * tX;
+    R = (A + x * B) / D;
+
+    if (R - offset < noise[i]) noise[i] = R - offset;
+  }
+  for ( ;; i++, x += 1.f) {
+    
+    hi = i + fixed / 2;
+    lo = hi - fixed;
+    if(hi>=n)break;
+    
+    tN = N[hi] - N[lo];
+    tX = X[hi] - X[lo];
+    tXX = XX[hi] - XX[lo];
+    tY = Y[hi] - Y[lo];
+    tXY = XY[hi] - XY[lo];
+    
+    A = tY * tXX - tX * tXY;
+    B = tN * tXY - tX * tY;
+    D = tN * tXX - tX * tX;
+    R = (A + x * B) / D;
+    
+    if (R - offset < noise[i]) noise[i] = R - offset;
+  }
+  for ( ; i < n; i++, x += 1.f) {
+    R = (A + x * B) / D;
+    if (R - offset < noise[i]) noise[i] = R - offset;
+  }
+}
+
+static void _vp_noisemask(VorbisPsy *p,
+			  float *logfreq, 
+			  float *logmask){
+
+  int i,n=p->n/2;
+  float *work=alloca(n*sizeof(*work));
+
+  bark_noise_hybridmp(n,p->bark,logfreq,logmask,
+		      140.,-1);
+
+  for(i=0;i<n;i++)work[i]=logfreq[i]-logmask[i];
+
+  bark_noise_hybridmp(n,p->bark,work,logmask,0.,
+		      p->vi->noisewindowfixed);
+
+  for(i=0;i<n;i++)work[i]=logfreq[i]-work[i];
+  
+  {
+    static int seq=0;
+    
+    float work2[n];
+    for(i=0;i<n;i++){
+      work2[i]=logmask[i]+work[i];
+    }
+    
+    //_analysis_output("logfreq",seq,logfreq,n,0,0);
+    //_analysis_output("median",seq,work,n,0,0);
+    //_analysis_output("envelope",seq,work2,n,0,0);
+    seq++;
+  }
+
+  for(i=0;i<n;i++){
+    int dB=logmask[i]+.5;
+    if(dB>=NOISE_COMPAND_LEVELS)dB=NOISE_COMPAND_LEVELS-1;
+    if(dB<0)dB=0;
+    logmask[i]= work[i]+p->vi->noisecompand[dB]+p->noiseoffset[i];
+  }
+
+}
+
+VorbisPsy *vorbis_psy_init(int rate, int n)
+{
+  long i,j,lo=-99,hi=1;
+  VorbisPsy *p = speex_alloc(sizeof(VorbisPsy));
+  memset(p,0,sizeof(*p));
+  
+  p->n = n;
+  spx_drft_init(&p->lookup, n);
+  p->bark = speex_alloc(n*sizeof(*p->bark));
+  p->rate=rate;
+  p->vi = &example_tuning;
+
+  /* BH4 window */
+  p->window = speex_alloc(sizeof(*p->window)*n);
+  float a0 = .35875f;
+  float a1 = .48829f;
+  float a2 = .14128f;
+  float a3 = .01168f;
+  for(i=0;i<n;i++)
+    p->window[i] = //a0 - a1*cos(2.*M_PI/n*(i+.5)) + a2*cos(4.*M_PI/n*(i+.5)) - a3*cos(6.*M_PI/n*(i+.5));
+      sin((i+.5)/n * M_PI)*sin((i+.5)/n * M_PI);
+  /* bark scale lookups */
+  for(i=0;i<n;i++){
+    float bark=toBARK(rate/(2*n)*i); 
+    
+    for(;lo+p->vi->noisewindowlomin<i && 
+	  toBARK(rate/(2*n)*lo)<(bark-p->vi->noisewindowlo);lo++);
+    
+    for(;hi<=n && (hi<i+p->vi->noisewindowhimin ||
+	  toBARK(rate/(2*n)*hi)<(bark+p->vi->noisewindowhi));hi++);
+    
+    p->bark[i]=((lo-1)<<16)+(hi-1);
+
+  }
+
+  /* set up rolling noise median */
+  p->noiseoffset=speex_alloc(n*sizeof(*p->noiseoffset));
+  
+  for(i=0;i<n;i++){
+    float halfoc=toOC((i+.5)*rate/(2.*n))*2.;
+    int inthalfoc;
+    float del;
+    
+    if(halfoc<0)halfoc=0;
+    if(halfoc>=P_BANDS-1)halfoc=P_BANDS-1;
+    inthalfoc=(int)halfoc;
+    del=halfoc-inthalfoc;
+    
+    p->noiseoffset[i]=
+      p->vi->noiseoff[inthalfoc]*(1.-del) + 
+      p->vi->noiseoff[inthalfoc+1]*del;
+    
+  }
+#if 0
+  _analysis_output_always("noiseoff0",ls,p->noiseoffset,n,1,0,0);
+#endif
+
+   return p;
+}
+
+void vorbis_psy_destroy(VorbisPsy *p)
+{
+  if(p){
+    spx_drft_clear(&p->lookup);
+    if(p->bark)
+      speex_free(p->bark);
+    if(p->noiseoffset)
+      speex_free(p->noiseoffset);
+    if(p->window)
+      speex_free(p->window);
+    memset(p,0,sizeof(*p));
+    speex_free(p);
+  }
+}
+
+void compute_curve(VorbisPsy *psy, float *audio, float *curve)
+{
+   int i;
+   float work[psy->n];
+
+   float scale=4.f/psy->n;
+   float scale_dB;
+
+   scale_dB=todB(scale);
+  
+   /* window the PCM data; use a BH4 window, not vorbis */
+   for(i=0;i<psy->n;i++)
+     work[i]=audio[i] * psy->window[i];
+
+   {
+     static int seq=0;
+     
+     //_analysis_output("win",seq,work,psy->n,0,0);
+
+     seq++;
+   }
+
+    /* FFT yields more accurate tonal estimation (not phase sensitive) */
+    spx_drft_forward(&psy->lookup,work);
+
+    /* magnitudes */
+    work[0]=scale_dB+todB(work[0]);
+    for(i=1;i<psy->n-1;i+=2){
+      float temp = work[i]*work[i] + work[i+1]*work[i+1];
+      work[(i+1)>>1] = scale_dB+.5f * todB(temp);
+    }
+
+    /* derive a noise curve */
+    _vp_noisemask(psy,work,curve);
+#define SIDEL 12
+    for (i=0;i<SIDEL;i++)
+    {
+       curve[i]=curve[SIDEL];
+    }
+#define SIDEH 12
+    for (i=0;i<SIDEH;i++)
+    {
+       curve[(psy->n>>1)-i-1]=curve[(psy->n>>1)-SIDEH];
+    }
+    for(i=0;i<((psy->n)>>1);i++)
+       curve[i] = fromdB(1.2*curve[i]+.2*i);
+       //curve[i] = fromdB(0.8*curve[i]+.35*i);
+       //curve[i] = fromdB(0.9*curve[i])*pow(1.0*i+45,1.3);
+}
+
+/* Transform a masking curve (power spectrum) into a pole-zero filter */
+void curve_to_lpc(VorbisPsy *psy, float *curve, float *awk1, float *awk2, int ord)
+{
+   int i;
+   float ac[psy->n];
+   float tmp;
+   int len = psy->n >> 1;
+   for (i=0;i<2*len;i++)
+      ac[i] = 0;
+   for (i=1;i<len;i++)
+      ac[2*i-1] = curve[i];
+   ac[0] = curve[0];
+   ac[2*len-1] = curve[len-1];
+   
+   spx_drft_backward(&psy->lookup, ac);
+   _spx_lpc(awk1, ac, ord);
+   tmp = 1.;
+   for (i=0;i<ord;i++)
+   {
+      tmp *= .99;
+      awk1[i] *= tmp;
+   }
+#if 0
+   for (i=0;i<ord;i++)
+      awk2[i] = 0;
+#else
+   /* Use the second (awk2) filter to correct the first one */
+   for (i=0;i<2*len;i++)
+      ac[i] = 0;   
+   for (i=0;i<ord;i++)
+      ac[i+1] = awk1[i];
+   ac[0] = 1;
+   spx_drft_forward(&psy->lookup, ac);
+   /* Compute (power) response of awk1 (all zero) */
+   ac[0] *= ac[0];
+   for (i=1;i<len;i++)
+      ac[i] = ac[2*i-1]*ac[2*i-1] + ac[2*i]*ac[2*i];
+   ac[len] = ac[2*len-1]*ac[2*len-1];
+   /* Compute correction required */
+   for (i=0;i<len;i++)
+      curve[i] = 1. / (1e-6f+curve[i]*ac[i]);
+
+   for (i=0;i<2*len;i++)
+      ac[i] = 0;
+   for (i=1;i<len;i++)
+      ac[2*i-1] = curve[i];
+   ac[0] = curve[0];
+   ac[2*len-1] = curve[len-1];
+   
+   spx_drft_backward(&psy->lookup, ac);
+   _spx_lpc(awk2, ac, ord);
+   tmp = 1;
+   for (i=0;i<ord;i++)
+   {
+      tmp *= .99;
+      awk2[i] *= tmp;
+   }
+#endif
+}
+
+#if 0
+#include <stdio.h>
+#include <math.h>
+
+#define ORDER 10
+#define CURVE_SIZE 24
+
+int main()
+{
+   int i;
+   float curve[CURVE_SIZE];
+   float awk1[ORDER], awk2[ORDER];
+   for (i=0;i<CURVE_SIZE;i++)
+      scanf("%f ", &curve[i]);
+   for (i=0;i<CURVE_SIZE;i++)
+      curve[i] = pow(10.f, .1*curve[i]);
+   curve_to_lpc(curve, CURVE_SIZE, awk1, awk2, ORDER);
+   for (i=0;i<ORDER;i++)
+      printf("%f ", awk1[i]);
+   printf ("\n");
+   for (i=0;i<ORDER;i++)
+      printf("%f ", awk2[i]);
+   printf ("\n");
+   return 0;
+}
+#endif
+
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.h b/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.h
new file mode 100644
index 00000000..fbdb7c55
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex/z-vorbis_psy.h
@@ -0,0 +1,97 @@
+/* Copyright (C) 2005 Jean-Marc Valin, CSIRO, Christopher Montgomery
+   File: vorbis_psy.h
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef VORBIS_PSY_H
+#define VORBIS_PSY_H
+
+#ifdef VORBIS_PSYCHO
+
+#include "smallft.h"
+#define P_BANDS 17      /* 62Hz to 16kHz */
+#define NOISE_COMPAND_LEVELS 40
+
+
+#define todB(x)   ((x)==0?-400.f:log((x)*(x))*4.34294480f)
+#define fromdB(x) (exp((x)*.11512925f))  
+
+/* The bark scale equations are approximations, since the original
+   table was somewhat hand rolled.  The below are chosen to have the
+   best possible fit to the rolled tables, thus their somewhat odd
+   appearance (these are more accurate and over a longer range than
+   the oft-quoted bark equations found in the texts I have).  The
+   approximations are valid from 0 - 30kHz (nyquist) or so.
+
+   all f in Hz, z in Bark */
+
+#define toBARK(n)   (13.1f*atan(.00074f*(n))+2.24f*atan((n)*(n)*1.85e-8f)+1e-4f*(n))
+#define fromBARK(z) (102.f*(z)-2.f*pow(z,2.f)+.4f*pow(z,3.f)+pow(1.46f,z)-1.f)
+
+/* Frequency to octave.  We arbitrarily declare 63.5 Hz to be octave
+   0.0 */
+
+#define toOC(n)     (log(n)*1.442695f-5.965784f)
+#define fromOC(o)   (exp(((o)+5.965784f)*.693147f))
+
+
+typedef struct {
+
+  float noisewindowlo;
+  float noisewindowhi;
+  int   noisewindowlomin;
+  int   noisewindowhimin;
+  int   noisewindowfixed;
+  float noiseoff[P_BANDS];
+  float noisecompand[NOISE_COMPAND_LEVELS];
+
+} VorbisPsyInfo;
+
+
+
+typedef struct {
+  int n;
+  int rate;
+  struct drft_lookup lookup;
+  VorbisPsyInfo *vi;
+
+  float *window;
+  float *noiseoffset;
+  long  *bark;
+
+} VorbisPsy;
+
+
+VorbisPsy *vorbis_psy_init(int rate, int size);
+void vorbis_psy_destroy(VorbisPsy *psy);
+void compute_curve(VorbisPsy *psy, float *audio, float *curve);
+void curve_to_lpc(VorbisPsy *psy, float *curve, float *awk1, float *awk2, int ord);
+
+#endif
+#endif
diff --git a/pjmedia/src/pjmedia-codec/speex_codec.c b/pjmedia/src/pjmedia-codec/speex_codec.c
new file mode 100644
index 00000000..0d63697c
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/speex_codec.c
@@ -0,0 +1,758 @@
+/* $Id$ */
+/* 
+ * Copyright (C)2003-2006 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+
+#include <pjmedia-codec/speex.h>
+#include <pjmedia/codec.h>
+#include <pjmedia/errno.h>
+#include <pjmedia/endpoint.h>
+#include <pjmedia/port.h>
+#include <speex/speex.h>
+#include <pj/assert.h>
+#include <pj/pool.h>
+#include <pj/string.h>
+#include <pj/os.h>
+
+#define DEFAULT_QUALITY	    8
+#define DEFAULT_COMPLEXITY  8
+
+
+/* Prototypes for Speex factory */
+static pj_status_t spx_test_alloc( pjmedia_codec_factory *factory, 
+				   const pjmedia_codec_info *id );
+static pj_status_t spx_default_attr( pjmedia_codec_factory *factory, 
+				     const pjmedia_codec_info *id, 
+				     pjmedia_codec_param *attr );
+static pj_status_t spx_enum_codecs( pjmedia_codec_factory *factory, 
+				    unsigned *count, 
+				    pjmedia_codec_info codecs[]);
+static pj_status_t spx_alloc_codec( pjmedia_codec_factory *factory, 
+				    const pjmedia_codec_info *id, 
+				    pjmedia_codec **p_codec);
+static pj_status_t spx_dealloc_codec( pjmedia_codec_factory *factory, 
+				      pjmedia_codec *codec );
+
+/* Prototypes for Speex implementation. */
+static pj_status_t  spx_codec_default_attr(pjmedia_codec *codec, 
+					   pjmedia_codec_param *attr);
+static pj_status_t  spx_codec_init( pjmedia_codec *codec, 
+				    pj_pool_t *pool );
+static pj_status_t  spx_codec_open( pjmedia_codec *codec, 
+				    pjmedia_codec_param *attr );
+static pj_status_t  spx_codec_close( pjmedia_codec *codec );
+static pj_status_t  spx_codec_get_frames( pjmedia_codec *codec,
+					  void *pkt,
+					  pj_size_t pkt_size,
+					  unsigned *frame_cnt,
+					  pjmedia_frame frames[]);
+static pj_status_t  spx_codec_encode( pjmedia_codec *codec, 
+				      const struct pjmedia_frame *input,
+				      unsigned output_buf_len, 
+				      struct pjmedia_frame *output);
+static pj_status_t  spx_codec_decode( pjmedia_codec *codec, 
+				      const struct pjmedia_frame *input,
+				      unsigned output_buf_len, 
+				      struct pjmedia_frame *output);
+
+/* Definition for Speex codec operations. */
+static pjmedia_codec_op spx_op = 
+{
+    &spx_codec_default_attr,
+    &spx_codec_init,
+    &spx_codec_open,
+    &spx_codec_close,
+    &spx_codec_get_frames,
+    &spx_codec_encode,
+    &spx_codec_decode
+};
+
+/* Definition for Speex codec factory operations. */
+static pjmedia_codec_factory_op spx_factory_op =
+{
+    &spx_test_alloc,
+    &spx_default_attr,
+    &spx_enum_codecs,
+    &spx_alloc_codec,
+    &spx_dealloc_codec
+};
+
+/* Index to Speex parameter. */
+enum
+{
+    PARAM_NB,	/* Index for narrowband parameter.	*/
+    PARAM_WB,	/* Index for wideband parameter.	*/
+    PARAM_UWB,	/* Index for ultra-wideband parameter	*/
+};
+
+/* Speex default parameter */
+struct speex_param
+{
+    int	    enabled;	/* Is this mode enabled?		*/
+    const SpeexMode *mode;  /* Speex mode.			*/
+    int	    pt;		/* Payload type.			*/
+    unsigned clock_rate;/* Default sampling rate to be used.	*/
+    int	    quality;	/* Default encoder quality to be used.	*/
+    int	    complexity;	/* Default encoder complexity.		*/
+    int	    samples_per_frame;	/* Samples per frame.		*/
+    int	    framesize;	/* Frame size for current mode.		*/
+    int	    bitrate;	/* Bit rate for current mode.		*/
+};
+
+/* Speex factory */
+static struct spx_factory
+{
+    pjmedia_codec_factory    base;
+    pjmedia_endpt	    *endpt;
+    pj_pool_t		    *pool;
+    pj_mutex_t		    *mutex;
+    pjmedia_codec	     codec_list;
+    struct speex_param	     speex_param[3];
+
+} spx_factory;
+
+/* Speex codec private data. */
+struct spx_private
+{
+    //pjmedia_codec_info	 info;		    /**< Codec info.		*/
+
+    int			 param_id;	    /**< Index to speex param.	*/
+
+    void		*enc;		    /**< Encoder state.		*/
+    SpeexBits		 enc_bits;	    /**< Encoder bits.		*/
+    void		*dec;		    /**< Decoder state.		*/
+    SpeexBits		 dec_bits;	    /**< Decoder bits.		*/
+};
+
+
+/*
+ * Get codec bitrate and frame size.
+ */
+static pj_status_t get_speex_info( struct speex_param *p )
+{
+    void *state;
+    int tmp;
+
+    /* Create temporary encoder */
+    state = speex_encoder_init(p->mode);
+    if (!state)
+	return PJMEDIA_CODEC_EFAILED;
+
+    /* Set the quality */
+    speex_encoder_ctl(state, SPEEX_SET_QUALITY, &p->quality);
+
+    /* Sampling rate. */
+    speex_encoder_ctl(state, SPEEX_SET_SAMPLING_RATE, &p->clock_rate);
+
+    /* VAD */
+    tmp = 1;
+    speex_encoder_ctl(state, SPEEX_SET_VAD, &tmp);
+
+    /* Complexity. */
+    speex_encoder_ctl(state, SPEEX_SET_COMPLEXITY, &p->complexity);
+
+    /* Now get the frame size */
+    speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &p->samples_per_frame);
+
+    /* Now get the the averate bitrate */
+    speex_encoder_ctl(state, SPEEX_GET_BITRATE, &p->bitrate);
+
+    /* Calculate framesize. */
+    p->framesize = p->bitrate * 20 / 1000;
+
+    /* Destroy encoder. */
+    speex_encoder_destroy(state);
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Initialize and register Speex codec factory to pjmedia endpoint.
+ */
+PJ_DEF(pj_status_t) pjmedia_codec_speex_init( pjmedia_endpt *endpt,
+					      unsigned options,
+					      int quality,
+					      int complexity )
+{
+    pjmedia_codec_mgr *codec_mgr;
+    unsigned i;
+    pj_status_t status;
+
+    if (spx_factory.pool != NULL) {
+	/* Already initialized. */
+	return PJ_SUCCESS;
+    }
+
+    /* Get defaults */
+    if (quality < 0) quality = DEFAULT_QUALITY;
+    if (complexity < 0) complexity = DEFAULT_COMPLEXITY;
+
+    /* Create Speex codec factory. */
+    spx_factory.base.op = &spx_factory_op;
+    spx_factory.base.factory_data = NULL;
+    spx_factory.endpt = endpt;
+
+    spx_factory.pool = pjmedia_endpt_create_pool(endpt, "speex", 
+						       4000, 4000);
+    if (!spx_factory.pool)
+	return PJ_ENOMEM;
+
+    pj_list_init(&spx_factory.codec_list);
+
+    /* Create mutex. */
+    status = pj_mutex_create_simple(spx_factory.pool, "speex", 
+				    &spx_factory.mutex);
+    if (status != PJ_SUCCESS)
+	goto on_error;
+
+    /* Initialize default Speex parameter. */
+    spx_factory.speex_param[PARAM_NB].enabled = 
+	((options & PJMEDIA_SPEEX_NO_NB) == 0);
+    spx_factory.speex_param[PARAM_NB].pt = 102;
+    spx_factory.speex_param[PARAM_NB].mode = &speex_nb_mode;
+    spx_factory.speex_param[PARAM_NB].clock_rate = 8000;
+    spx_factory.speex_param[PARAM_NB].quality = quality;
+    spx_factory.speex_param[PARAM_NB].complexity = complexity;
+
+    spx_factory.speex_param[PARAM_WB].enabled = 
+	((options & PJMEDIA_SPEEX_NO_WB) == 0);
+    spx_factory.speex_param[PARAM_WB].pt = 103;
+    spx_factory.speex_param[PARAM_WB].mode = &speex_wb_mode;
+    spx_factory.speex_param[PARAM_WB].clock_rate = 16000;
+    spx_factory.speex_param[PARAM_WB].quality = quality;
+    spx_factory.speex_param[PARAM_WB].complexity = complexity;
+
+    spx_factory.speex_param[PARAM_UWB].enabled = 
+	((options & PJMEDIA_SPEEX_NO_UWB) == 0);
+    spx_factory.speex_param[PARAM_UWB].pt = 104;
+    spx_factory.speex_param[PARAM_UWB].mode = &speex_uwb_mode;
+    spx_factory.speex_param[PARAM_UWB].clock_rate = 32000;
+    spx_factory.speex_param[PARAM_UWB].quality = quality;
+    spx_factory.speex_param[PARAM_UWB].complexity = complexity;
+
+    /* Get codec framesize and avg bitrate for each mode. */
+    for (i=0; i<PJ_ARRAY_SIZE(spx_factory.speex_param); ++i) {
+	status = get_speex_info(&spx_factory.speex_param[i]);
+    }
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(endpt);
+    if (!codec_mgr) {
+	status = PJ_EINVALIDOP;
+	goto on_error;
+    }
+
+    /* Register codec factory to endpoint. */
+    status = pjmedia_codec_mgr_register_factory(codec_mgr, 
+						&spx_factory.base);
+    if (status != PJ_SUCCESS)
+	goto on_error;
+
+    /* Done. */
+    return PJ_SUCCESS;
+
+on_error:
+    pj_pool_release(spx_factory.pool);
+    spx_factory.pool = NULL;
+    return status;
+}
+
+
+/*
+ * Initialize with default settings.
+ */
+PJ_DEF(pj_status_t) pjmedia_codec_speex_init_default(pjmedia_endpt *endpt)
+{
+    return pjmedia_codec_speex_init(endpt, 0, -1, -1);
+}
+
+/*
+ * Unregister Speex codec factory from pjmedia endpoint and deinitialize
+ * the Speex codec library.
+ */
+PJ_DEF(pj_status_t) pjmedia_codec_speex_deinit(void)
+{
+    pjmedia_codec_mgr *codec_mgr;
+    pj_status_t status;
+
+    if (spx_factory.pool == NULL) {
+	/* Already deinitialized */
+	return PJ_SUCCESS;
+    }
+
+    /* We don't want to deinit if there's outstanding codec. */
+    pj_mutex_lock(spx_factory.mutex);
+    if (!pj_list_empty(&spx_factory.codec_list)) {
+	pj_mutex_unlock(spx_factory.mutex);
+	return PJ_EBUSY;
+    }
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(spx_factory.endpt);
+    if (!codec_mgr) {
+	pj_pool_release(spx_factory.pool);
+	spx_factory.pool = NULL;
+	return PJ_EINVALIDOP;
+    }
+
+    /* Unregister Speex codec factory. */
+    status = pjmedia_codec_mgr_unregister_factory(codec_mgr,
+						  &spx_factory.base);
+    
+    /* Destroy mutex. */
+    pj_mutex_destroy(spx_factory.mutex);
+
+    /* Destroy pool. */
+    pj_pool_release(spx_factory.pool);
+    spx_factory.pool = NULL;
+
+    return status;
+}
+
+/* 
+ * Check if factory can allocate the specified codec. 
+ */
+static pj_status_t spx_test_alloc( pjmedia_codec_factory *factory, 
+				   const pjmedia_codec_info *info )
+{
+    const pj_str_t speex_tag = { "speex", 5};
+    unsigned i;
+
+    PJ_UNUSED_ARG(factory);
+
+    /* Type MUST be audio. */
+    if (info->type != PJMEDIA_TYPE_AUDIO)
+	return PJMEDIA_CODEC_EUNSUP;
+
+    /* Check encoding name. */
+    if (pj_stricmp(&info->encoding_name, &speex_tag) != 0)
+	return PJMEDIA_CODEC_EUNSUP;
+
+    /* Check clock-rate */
+    for (i=0; i<PJ_ARRAY_SIZE(spx_factory.speex_param); ++i) {
+	if (info->sample_rate == spx_factory.speex_param[i].clock_rate) {
+	    /* Okay, let's Speex! */
+	    return PJ_SUCCESS;
+	}
+    }
+
+    
+    /* Unsupported, or mode is disabled. */
+    return PJMEDIA_CODEC_EUNSUP;
+}
+
+/*
+ * Generate default attribute.
+ */
+static pj_status_t spx_default_attr (pjmedia_codec_factory *factory, 
+				      const pjmedia_codec_info *id, 
+				      pjmedia_codec_param *attr )
+{
+
+    PJ_ASSERT_RETURN(factory==&spx_factory.base, PJ_EINVAL);
+
+    pj_memset(attr, 0, sizeof(pjmedia_codec_param));
+    attr->pt = id->pt;
+
+    if (id->sample_rate <= 8000) {
+	attr->sample_rate = spx_factory.speex_param[PARAM_NB].clock_rate;
+	attr->avg_bps = spx_factory.speex_param[PARAM_NB].bitrate;
+
+    } else if (id->sample_rate <= 16000) {
+	attr->sample_rate = spx_factory.speex_param[PARAM_WB].clock_rate;
+	attr->avg_bps = spx_factory.speex_param[PARAM_WB].bitrate;
+
+    } else {
+	/* Wow.. somebody is doing ultra-wideband. Cool...! */
+	attr->sample_rate = spx_factory.speex_param[PARAM_UWB].clock_rate;
+	attr->avg_bps = spx_factory.speex_param[PARAM_UWB].bitrate;
+    }
+
+    attr->pcm_bits_per_sample = 16;
+    attr->ptime = 20;
+    attr->pt = id->pt;
+
+    /* Default flags. */
+    attr->cng_enabled = 1;
+    attr->concl_enabled = 1;
+    attr->hpf_enabled = 1;
+    attr->lpf_enabled =1 ;
+    attr->penh_enabled =1 ;
+    attr->vad_enabled = 1;
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Enum codecs supported by this factory (i.e. only Speex!).
+ */
+static pj_status_t spx_enum_codecs(pjmedia_codec_factory *factory, 
+				    unsigned *count, 
+				    pjmedia_codec_info codecs[])
+{
+    unsigned max;
+    int i;  /* Must be signed */
+
+    PJ_UNUSED_ARG(factory);
+    PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL);
+
+    max = *count;
+    *count = 0;
+
+    /*
+     * We return three codecs here, and in this order:
+     *	- ultra-wideband, wideband, and narrowband.
+     */
+    for (i=PJ_ARRAY_SIZE(spx_factory.speex_param)-1; i>=0 && *count<max; --i) {
+
+	if (!spx_factory.speex_param[i].enabled)
+	    continue;
+
+	pj_memset(&codecs[*count], 0, sizeof(pjmedia_codec_info));
+	codecs[*count].encoding_name = pj_str("speex");
+	codecs[*count].pt = spx_factory.speex_param[i].pt;
+	codecs[*count].type = PJMEDIA_TYPE_AUDIO;
+	codecs[*count].sample_rate = spx_factory.speex_param[i].clock_rate;
+
+	++*count;
+    }
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Allocate a new Speex codec instance.
+ */
+static pj_status_t spx_alloc_codec( pjmedia_codec_factory *factory, 
+				    const pjmedia_codec_info *id,
+				    pjmedia_codec **p_codec)
+{
+    pjmedia_codec *codec;
+    struct spx_private *spx;
+
+    PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL);
+    PJ_ASSERT_RETURN(factory == &spx_factory.base, PJ_EINVAL);
+
+
+    pj_mutex_lock(spx_factory.mutex);
+
+    /* Get free nodes, if any. */
+    if (!pj_list_empty(&spx_factory.codec_list)) {
+	codec = spx_factory.codec_list.next;
+	pj_list_erase(codec);
+    } else {
+	codec = pj_pool_zalloc(spx_factory.pool, 
+			       sizeof(pjmedia_codec));
+	PJ_ASSERT_RETURN(codec != NULL, PJ_ENOMEM);
+	codec->op = &spx_op;
+	codec->factory = factory;
+	codec->codec_data = pj_pool_alloc(spx_factory.pool,
+					  sizeof(struct spx_private));
+    }
+
+    pj_mutex_unlock(spx_factory.mutex);
+
+    spx = (struct spx_private*) codec->codec_data;
+    spx->enc = NULL;
+    spx->dec = NULL;
+
+    if (id->sample_rate <= 8000)
+	spx->param_id = PARAM_NB;
+    else if (id->sample_rate <= 16000)
+	spx->param_id = PARAM_WB;
+    else
+	spx->param_id = PARAM_UWB;
+
+    *p_codec = codec;
+    return PJ_SUCCESS;
+}
+
+/*
+ * Free codec.
+ */
+static pj_status_t spx_dealloc_codec( pjmedia_codec_factory *factory, 
+				      pjmedia_codec *codec )
+{
+    struct spx_private *spx;
+
+    PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL);
+    PJ_ASSERT_RETURN(factory == &spx_factory.base, PJ_EINVAL);
+
+    /* Close codec, if it's not closed. */
+    spx = (struct spx_private*) codec->codec_data;
+    if (spx->enc != NULL || spx->dec != NULL) {
+	spx_codec_close(codec);
+    }
+
+    /* Put in the free list. */
+    pj_mutex_lock(spx_factory.mutex);
+    pj_list_push_front(&spx_factory.codec_list, codec);
+    pj_mutex_unlock(spx_factory.mutex);
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Get codec default attributes.
+ */
+static pj_status_t spx_codec_default_attr( pjmedia_codec *codec, 
+					   pjmedia_codec_param *attr)
+{
+    struct spx_private *spx;
+    pjmedia_codec_info info;
+
+    spx = (struct spx_private*) codec->codec_data;
+
+    info.encoding_name = pj_str("speex");
+    info.pt = 200;  /* Don't care */
+    info.sample_rate = spx_factory.speex_param[spx->param_id].clock_rate;
+    info.type = PJMEDIA_TYPE_AUDIO;
+
+    return spx_default_attr( codec->factory, &info, attr);
+}
+
+/*
+ * Init codec.
+ */
+static pj_status_t spx_codec_init( pjmedia_codec *codec, 
+				   pj_pool_t *pool )
+{
+    PJ_UNUSED_ARG(codec);
+    PJ_UNUSED_ARG(pool);
+    return PJ_SUCCESS;
+}
+
+/*
+ * Open codec.
+ */
+static pj_status_t spx_codec_open( pjmedia_codec *codec, 
+				   pjmedia_codec_param *attr )
+{
+    struct spx_private *spx;
+    int id, tmp;
+
+    spx = (struct spx_private*) codec->codec_data;
+    id = spx->param_id;
+
+    /* 
+     * Create and initialize encoder. 
+     */
+    spx->enc = speex_encoder_init(spx_factory.speex_param[id].mode);
+    if (!spx->enc)
+	return PJMEDIA_CODEC_EFAILED;
+    speex_bits_init(&spx->enc_bits);
+
+    /* Set the quality*/
+    speex_encoder_ctl(spx->enc, SPEEX_SET_QUALITY, 
+		      &spx_factory.speex_param[id].quality);
+
+    /* Sampling rate. */
+    tmp = attr->sample_rate;
+    speex_encoder_ctl(spx->enc, SPEEX_SET_SAMPLING_RATE, 
+		      &spx_factory.speex_param[id].clock_rate);
+
+    /* VAD */
+    tmp = attr->vad_enabled;
+    speex_encoder_ctl(spx->enc, SPEEX_SET_VAD, &tmp);
+
+    /* Complexity */
+    speex_encoder_ctl(spx->enc, SPEEX_SET_BITRATE, 
+		      &spx_factory.speex_param[id].complexity);
+
+    /* Bitrate */
+    speex_encoder_ctl(spx->enc, SPEEX_SET_BITRATE, 
+		      &spx_factory.speex_param[id].bitrate);
+
+    /* 
+     * Create and initialize decoder. 
+     */
+    spx->dec = speex_decoder_init(spx_factory.speex_param[id].mode);
+    if (!spx->dec) {
+	spx_codec_close(codec);
+	return PJMEDIA_CODEC_EFAILED;
+    }
+    speex_bits_init(&spx->dec_bits);
+
+    /* Sampling rate. */
+    speex_decoder_ctl(spx->dec, SPEEX_SET_SAMPLING_RATE, 
+		      &spx_factory.speex_param[id].clock_rate);
+
+    /* PENH */
+    tmp = attr->penh_enabled;
+    speex_decoder_ctl(spx->dec, SPEEX_SET_ENH, &tmp);
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Close codec.
+ */
+static pj_status_t spx_codec_close( pjmedia_codec *codec )
+{
+    struct spx_private *spx;
+
+    spx = (struct spx_private*) codec->codec_data;
+
+    /* Destroy encoder*/
+    if (spx->enc) {
+	speex_encoder_destroy( spx->enc );
+	spx->enc = NULL;
+	speex_bits_destroy( &spx->enc_bits );
+    }
+
+    /* Destroy decoder */
+    if (spx->dec) {
+	speex_decoder_destroy( spx->dec);
+	spx->dec = NULL;
+	speex_bits_destroy( &spx->dec_bits );
+    }
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Get frames in the packet.
+ */
+static pj_status_t  spx_codec_get_frames( pjmedia_codec *codec,
+					  void *pkt,
+					  pj_size_t pkt_size,
+					  unsigned *frame_cnt,
+					  pjmedia_frame frames[])
+{
+    struct spx_private *spx;
+    unsigned speex_frame_size;
+    unsigned count;
+
+    spx = (struct spx_private*) codec->codec_data;
+
+    speex_frame_size = spx_factory.speex_param[spx->param_id].framesize;
+
+    /* Don't really know how to do this... */
+    count = 0;
+    while (pkt_size >= speex_frame_size && count < *frame_cnt) {
+	frames[count].buf = pkt;
+	frames[count].size = speex_frame_size;
+	frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO;
+	frames[count].timestamp.u64 = 0;
+
+	pkt_size -= speex_frame_size;
+	++count;
+	pkt = ((char*)pkt) + speex_frame_size;
+    }
+
+    if (pkt_size && count < *frame_cnt) {
+	frames[count].buf = pkt;
+	frames[count].size = pkt_size;
+	frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO;
+	frames[count].timestamp.u64 = 0;
+	++count;
+    }
+
+    *frame_cnt = count;
+    return PJ_SUCCESS;
+}
+
+/*
+ * Encode frame.
+ */
+static pj_status_t spx_codec_encode( pjmedia_codec *codec, 
+				     const struct pjmedia_frame *input,
+				     unsigned output_buf_len, 
+				     struct pjmedia_frame *output)
+{
+    struct spx_private *spx;
+    float tmp[640]; /* 20ms at 32KHz */
+    pj_int16_t *samp_in;
+    unsigned i, samp_count;
+
+    spx = (struct spx_private*) codec->codec_data;
+
+    if (input->type != PJMEDIA_FRAME_TYPE_AUDIO) {
+	output->size = 0;
+	output->buf = NULL;
+	output->timestamp = input->timestamp;
+	output->type = input->type;
+	return PJ_SUCCESS;
+    }
+
+    /* Copy frame to float buffer. */
+    samp_count = input->size / 2;
+    samp_in = input->buf;
+    for (i=0; i<samp_count; ++i) {
+	tmp[i] = samp_in[i];
+    }
+
+    /* Flush all the bits in the struct so we can encode a new frame */
+    speex_bits_reset(&spx->enc_bits);
+
+    /* Encode the frame */
+    speex_encode(spx->enc, tmp, &spx->enc_bits);
+
+    /* Copy the bits to an array of char that can be written */
+    output->size = speex_bits_write(&spx->enc_bits, 
+				    output->buf, output_buf_len);
+    output->type = PJMEDIA_FRAME_TYPE_AUDIO;
+    output->timestamp = input->timestamp;
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * Decode frame.
+ */
+static pj_status_t spx_codec_decode( pjmedia_codec *codec, 
+				     const struct pjmedia_frame *input,
+				     unsigned output_buf_len, 
+				     struct pjmedia_frame *output)
+{
+    struct spx_private *spx;
+    float tmp[640]; /* 20ms at 32KHz */
+    pj_int16_t *dst_buf;
+    unsigned i, count;
+
+    spx = (struct spx_private*) codec->codec_data;
+
+    if (input->type != PJMEDIA_FRAME_TYPE_AUDIO) {
+	pj_memset(output->buf, 0, output_buf_len);
+	output->size = 320;
+	output->timestamp.u64 = input->timestamp.u64;
+	output->type = PJMEDIA_FRAME_TYPE_AUDIO;
+	return PJ_SUCCESS;
+    }
+
+    /* Initialization of the structure that holds the bits */
+    speex_bits_init(&spx->dec_bits);
+
+    /* Copy the data into the bit-stream struct */
+    speex_bits_read_from(&spx->dec_bits, input->buf, input->size);
+
+    /* Decode the data */
+    speex_decode(spx->dec, &spx->dec_bits, tmp);
+
+    count = spx_factory.speex_param[spx->param_id].clock_rate * 20 / 1000;
+    dst_buf = output->buf;
+    for (i=0; i<count; ++i) {
+	dst_buf[i] = (pj_int16_t)tmp[i];
+    }
+    output->type = PJMEDIA_FRAME_TYPE_AUDIO;
+    output->size = count * 2;
+    output->timestamp.u64 = input->timestamp.u64;
+
+
+    return PJ_SUCCESS;
+}
diff --git a/pjmedia/src/pjmedia/conference.c b/pjmedia/src/pjmedia/conference.c
index 087468c7..ca209ffe 100644
--- a/pjmedia/src/pjmedia/conference.c
+++ b/pjmedia/src/pjmedia/conference.c
@@ -889,6 +889,7 @@ static pj_status_t write_port(pjmedia_conf *conf, struct conf_port *cport,
 			      pj_uint32_t timestamp)
 {
     pj_int16_t *buf;
+    pj_bool_t sent = PJ_FALSE;
     unsigned j;
 
     /* If port is muted or nobody is transmitting to this port, 
@@ -964,6 +965,7 @@ static pj_status_t write_port(pjmedia_conf *conf, struct conf_port *cport,
     if (cport->tx_buf_count >= cport->samples_per_frame) {
 	
 	pjmedia_frame frame;
+	pj_status_t status;
 
 	frame.type = PJMEDIA_FRAME_TYPE_AUDIO;
 	frame.buf = cport->tx_buf;
@@ -971,9 +973,18 @@ static pj_status_t write_port(pjmedia_conf *conf, struct conf_port *cport,
 	frame.timestamp.u64 = timestamp;
 
 	if (cport->port)
-	    return pjmedia_port_put_frame(cport->port, &frame);
+	    status = pjmedia_port_put_frame(cport->port, &frame);
 	else
-	    return PJ_SUCCESS;
+	    status = PJ_SUCCESS;
+
+	cport->tx_buf_count -= cport->samples_per_frame;
+	if (cport->tx_buf_count) {
+	    copy_samples(cport->tx_buf, 
+			 cport->tx_buf + cport->samples_per_frame,
+			 cport->tx_buf_count);
+	}
+
+	return status;
     }
 
     return PJ_SUCCESS;
diff --git a/pjmedia/src/pjmedia/endpoint.c b/pjmedia/src/pjmedia/endpoint.c
index 99a32729..99671017 100644
--- a/pjmedia/src/pjmedia/endpoint.c
+++ b/pjmedia/src/pjmedia/endpoint.c
@@ -38,8 +38,6 @@ static const pj_str_t STR_SDP_NAME = { "pjmedia", 7 };
 static const pj_str_t STR_SENDRECV = { "sendrecv", 8 };
 
 
-PJ_DECL(pj_status_t) g711_init_factory (pjmedia_codec_factory *factory, pj_pool_t *pool);
-PJ_DECL(pj_status_t) g711_deinit_factory (pjmedia_codec_factory *factory);
 
 /* Flag to indicate whether pjmedia error subsystem has been registered
  * to pjlib.
@@ -89,7 +87,6 @@ PJ_DEF(pj_status_t) pjmedia_endpt_create(pj_pool_factory *pf,
 {
     pj_pool_t *pool;
     pjmedia_endpt *endpt;
-    pjmedia_codec_factory *factory;
     pj_status_t status;
 
     if (!error_subsys_registered) {
@@ -119,6 +116,8 @@ PJ_DEF(pj_status_t) pjmedia_endpt_create(pj_pool_factory *pf,
     }
 
     /* Init and register G.711 codec. */
+#if 0
+    // Starting from 0.5.4, codec factory is registered by applications.
     factory = pj_pool_alloc (endpt->pool, sizeof(pjmedia_codec_factory));
 
     status = g711_init_factory (factory, endpt->pool);
@@ -132,6 +131,7 @@ PJ_DEF(pj_status_t) pjmedia_endpt_create(pj_pool_factory *pf,
 	pj_snd_deinit();
 	goto on_error;
     }
+#endif
 
     *p_endpt = endpt;
     return PJ_SUCCESS;
@@ -326,10 +326,11 @@ PJ_DEF(pj_status_t) pjmedia_endpt_dump(pjmedia_endpt *endpt)
 	}
 
 	PJ_LOG(3,(THIS_FILE, 
-		  "   %s codec #%2d: pt=%d (%.*s, %d bps, ptime=%d ms, vad=%d, cng=%d)", 
+		  "   %s codec #%2d: pt=%d (%.*s @%dKHz, %d bps, ptime=%d ms, vad=%d, cng=%d)", 
 		  type, i, codec_info[i].pt,
 		  (int)codec_info[i].encoding_name.slen,
 		  codec_info[i].encoding_name.ptr,
+		  codec_info[i].sample_rate/1000,
 		  param.avg_bps, param.ptime,
 		  param.vad_enabled,
 		  param.cng_enabled));
diff --git a/pjmedia/src/pjmedia/g711.c b/pjmedia/src/pjmedia/g711.c
index 5dfffd4c..ad8bb7ee 100644
--- a/pjmedia/src/pjmedia/g711.c
+++ b/pjmedia/src/pjmedia/g711.c
@@ -20,6 +20,7 @@
  * notice in the second half of this file.
  */
 #include <pjmedia/codec.h>
+#include <pjmedia/endpoint.h>
 #include <pjmedia/errno.h>
 #include <pjmedia/port.h>
 #include <pj/pool.h>
@@ -100,11 +101,14 @@ static pjmedia_codec_factory_op g711_factory_op =
 };
 
 /* G711 factory private data */
-struct g711_factory_private
+static struct g711_factory
 {
-    pj_pool_t  *pool;
-    pjmedia_codec	codec_list;
-};
+    pjmedia_codec_factory	base;
+    pjmedia_endpt	       *endpt;
+    pj_pool_t		       *pool;
+    pj_mutex_t		       *mutex;
+    pjmedia_codec		codec_list;
+} g711_factory;
 
 /* G711 codec private data. */
 struct g711_private
@@ -113,41 +117,107 @@ struct g711_private
 };
 
 
-PJ_DEF(pj_status_t) g711_init_factory (pjmedia_codec_factory *factory, pj_pool_t *pool)
+PJ_DEF(pj_status_t) g711_deinit_factory (pjmedia_codec_factory *factory)
 {
-    struct g711_factory_private *priv;
-    //enum { CODEC_MEM_SIZE = sizeof(pjmedia_codec) + sizeof(struct g711_private) + 4 };
-
-    /* Create pool. */
-    /*
-    pool = pj_pool_pool_create_pool(pp, "g711ftry", 
-					G711_CODEC_CNT*CODEC_MEM_SIZE + 
-					sizeof(struct g711_factory_private),
-				        CODEC_MEM_SIZE, NULL);
-    if (!pool)
-	return -1;
-    */
+    PJ_ASSERT_RETURN(factory==&g711_factory.base, PJ_EINVAL);
 
-    priv = pj_pool_alloc(pool, sizeof(struct g711_factory_private));
-    if (!priv)
-	return -1;
+    /* Invalidate member to help detect errors */
+    g711_factory.codec_list.next = g711_factory.codec_list.prev = NULL;
+    return 0;
+}
 
-    factory->factory_data = priv;
-    factory->op = &g711_factory_op;
+PJ_DEF(pj_status_t) pjmedia_codec_g711_init(pjmedia_endpt *endpt)
+{
+    pjmedia_codec_mgr *codec_mgr;
+    pj_status_t status;
 
-    priv->pool = pool;
-    pj_list_init(&priv->codec_list);
-    return 0;
+    if (g711_factory.endpt != NULL) {
+	/* Already initialized. */
+	return PJ_SUCCESS;
+    }
+
+    /* Init factory */
+    g711_factory.base.op = &g711_factory_op;
+    g711_factory.base.factory_data = NULL;
+    g711_factory.endpt = endpt;
+
+    pj_list_init(&g711_factory.codec_list);
+
+    /* Create pool */
+    g711_factory.pool = pjmedia_endpt_create_pool(endpt, "g711", 4000, 4000);
+    if (!g711_factory.pool)
+	return PJ_ENOMEM;
+
+    /* Create mutex. */
+    status = pj_mutex_create_simple(g711_factory.pool, "g611", 
+				    &g711_factory.mutex);
+    if (status != PJ_SUCCESS)
+	goto on_error;
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(endpt);
+    if (!codec_mgr) {
+	return PJ_EINVALIDOP;
+    }
+
+    /* Register codec factory to endpoint. */
+    status = pjmedia_codec_mgr_register_factory(codec_mgr, 
+						&g711_factory.base);
+    if (status != PJ_SUCCESS)
+	return status;
+
+
+    return PJ_SUCCESS;
+
+on_error:
+    if (g711_factory.mutex) {
+	pj_mutex_destroy(g711_factory.mutex);
+	g711_factory.mutex = NULL;
+    }
+    if (g711_factory.pool) {
+	pj_pool_release(g711_factory.pool);
+	g711_factory.pool = NULL;
+    }
+    return status;
 }
 
-PJ_DEF(pj_status_t) g711_deinit_factory (pjmedia_codec_factory *factory)
+PJ_DEF(pj_status_t) pjmedia_codec_g711_deinit(void)
 {
-    struct g711_factory_private *priv = factory->factory_data;
+    pjmedia_codec_mgr *codec_mgr;
+    pj_status_t status;
 
-    /* Invalidate member to help detect errors */
-    priv->pool = NULL;
-    priv->codec_list.next = priv->codec_list.prev = NULL;
-    return 0;
+    if (g711_factory.endpt == NULL) {
+	/* Not registered. */
+	return PJ_SUCCESS;
+    }
+
+    /* Lock mutex. */
+    pj_mutex_lock(g711_factory.mutex);
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(g711_factory.endpt);
+    if (!codec_mgr) {
+	g711_factory.endpt = NULL;
+	pj_mutex_unlock(g711_factory.mutex);
+	return PJ_EINVALIDOP;
+    }
+
+    /* Unregister G711 codec factory. */
+    status = pjmedia_codec_mgr_unregister_factory(codec_mgr,
+						  &g711_factory.base);
+    g711_factory.endpt = NULL;
+
+    /* Destroy mutex. */
+    pj_mutex_destroy(g711_factory.mutex);
+    g711_factory.mutex = NULL;
+
+
+    /* Release pool. */
+    pj_pool_release(g711_factory.pool);
+    g711_factory.pool = NULL;
+
+
+    return status;
 }
 
 static pj_status_t g711_test_alloc( pjmedia_codec_factory *factory, const pjmedia_codec_info *id )
@@ -208,17 +278,23 @@ static pj_status_t g711_alloc_codec( pjmedia_codec_factory *factory,
 				     const pjmedia_codec_info *id,
 				     pjmedia_codec **p_codec)
 {
-    struct g711_factory_private *priv = factory->factory_data;
     pjmedia_codec *codec = NULL;
 
+    PJ_ASSERT_RETURN(factory==&g711_factory.base, PJ_EINVAL);
+
+    /* Lock mutex. */
+    pj_mutex_lock(g711_factory.mutex);
+
     /* Allocate new codec if no more is available */
-    if (pj_list_empty(&priv->codec_list)) {
+    if (pj_list_empty(&g711_factory.codec_list)) {
 	struct g711_private *codec_priv;
 
-	codec = pj_pool_alloc(priv->pool, sizeof(pjmedia_codec));
-	codec_priv = pj_pool_alloc(priv->pool, sizeof(struct g711_private));
-	if (!codec || !codec_priv)
+	codec = pj_pool_alloc(g711_factory.pool, sizeof(pjmedia_codec));
+	codec_priv = pj_pool_alloc(g711_factory.pool, sizeof(struct g711_private));
+	if (!codec || !codec_priv) {
+	    pj_mutex_unlock(g711_factory.mutex);
 	    return PJ_ENOMEM;
+	}
 
 	codec_priv->pt = id->pt;
 
@@ -226,7 +302,7 @@ static pj_status_t g711_alloc_codec( pjmedia_codec_factory *factory,
 	codec->op = &g711_op;
 	codec->codec_data = codec_priv;
     } else {
-	codec = priv->codec_list.next;
+	codec = g711_factory.codec_list.next;
 	pj_list_erase(codec);
     }
 
@@ -234,12 +310,17 @@ static pj_status_t g711_alloc_codec( pjmedia_codec_factory *factory,
     codec->next = codec->prev = NULL;
 
     *p_codec = codec;
+
+    /* Unlock mutex. */
+    pj_mutex_unlock(g711_factory.mutex);
+
     return PJ_SUCCESS;
 }
 
 static pj_status_t g711_dealloc_codec( pjmedia_codec_factory *factory, pjmedia_codec *codec )
 {
-    struct g711_factory_private *priv = factory->factory_data;
+    
+    PJ_ASSERT_RETURN(factory==&g711_factory.base, PJ_EINVAL);
 
     /* Check that this node has not been deallocated before */
     pj_assert (codec->next==NULL && codec->prev==NULL);
@@ -247,8 +328,14 @@ static pj_status_t g711_dealloc_codec( pjmedia_codec_factory *factory, pjmedia_c
 	return PJ_EINVALIDOP;
     }
 
+    /* Lock mutex. */
+    pj_mutex_lock(g711_factory.mutex);
+
     /* Insert at the back of the list */
-    pj_list_insert_before(&priv->codec_list, codec);
+    pj_list_insert_before(&g711_factory.codec_list, codec);
+
+    /* Unlock mutex. */
+    pj_mutex_unlock(g711_factory.mutex);
 
     return PJ_SUCCESS;
 }
diff --git a/pjsip/include/pjsua-lib/pjsua.h b/pjsip/include/pjsua-lib/pjsua.h
index 1ed8f3af..fe778be6 100644
--- a/pjsip/include/pjsua-lib/pjsua.h
+++ b/pjsip/include/pjsua-lib/pjsua.h
@@ -186,6 +186,10 @@ struct pjsua
     pj_bool_t	     auto_loop;	    /**< Auto loop RTP stream?		*/
     pj_bool_t	     auto_conf;	    /**< Auto put to conference?	*/
 
+    /* Codec arguments: */
+    int		     codec_cnt;	    /**< Number of --add-codec args.	*/
+    pj_str_t	     codec_arg[32]; /**< Array of --add-codec args.	*/
+    pj_status_t	    (*codec_deinit[32])(void);	/**< Array of funcs.	*/
 
     /* User Agent behaviour: */
     int		     auto_answer;   /**< Automatically answer in calls.	*/
diff --git a/pjsip/src/pjsua-lib/pjsua_core.c b/pjsip/src/pjsua-lib/pjsua_core.c
index e944ea42..1f975142 100644
--- a/pjsip/src/pjsua-lib/pjsua_core.c
+++ b/pjsip/src/pjsua-lib/pjsua_core.c
@@ -528,18 +528,6 @@ pj_status_t pjsua_init(void)
 	return status;
     }
 
-    /* Init pjmedia-codecs: */
-
-    status = pjmedia_codec_init(pjsua.med_endpt);
-    if (status != PJ_SUCCESS) {
-	pj_caching_pool_destroy(&pjsua.cp);
-	pjsua_perror(THIS_FILE, 
-		     "Media codec initialization has returned error", 
-		     status);
-	return status;
-    }
-
-
     /* Done. */
     return PJ_SUCCESS;
 }
@@ -608,14 +596,129 @@ int pjsua_find_account_for_outgoing(const pj_str_t *url)
 
 
 /*
- * Start pjsua stack.
- * This will start the registration process, if registration is configured.
+ * Init media.
  */
-pj_status_t pjsua_start(void)
+static pj_status_t init_media(void)
 {
-    int i;  /* Must be signed */
-    pjsip_transport *udp_transport;
-    pj_status_t status = PJ_SUCCESS;
+
+    pj_status_t status;
+
+    /* If user doesn't specify any codecs, register all of them. */
+    if (pjsua.codec_cnt == 0) {
+
+	unsigned option = PJMEDIA_SPEEX_NO_WB | PJMEDIA_SPEEX_NO_UWB;
+
+	/* Register speex. */
+	if (pjsua.clock_rate >= 16000)
+	    option &= ~(PJMEDIA_SPEEX_NO_WB);
+	if (pjsua.clock_rate >= 32000)
+	    option &= ~(PJMEDIA_SPEEX_NO_UWB);
+
+	status = pjmedia_codec_speex_init(pjsua.med_endpt, option, -1, -1);
+	if (status != PJ_SUCCESS) {
+	    pjsua_perror(THIS_FILE, "Error initializing Speex codec",
+		         status);
+	    return status;
+	}
+
+	pjsua.codec_arg[pjsua.codec_cnt] = pj_str("speex");
+	pjsua.codec_deinit[pjsua.codec_cnt] = &pjmedia_codec_speex_deinit;
+	pjsua.codec_cnt++;
+
+	/* Register GSM */
+	status = pjmedia_codec_gsm_init(pjsua.med_endpt);
+	if (status != PJ_SUCCESS) {
+	    pjsua_perror(THIS_FILE, "Error initializing GSM codec",
+		         status);
+	    return status;
+	}
+
+	pjsua.codec_arg[pjsua.codec_cnt] = pj_str("gsm");
+	pjsua.codec_deinit[pjsua.codec_cnt] = &pjmedia_codec_gsm_deinit;
+	pjsua.codec_cnt++;
+
+	/* Register PCMA and PCMU */
+	status = pjmedia_codec_g711_init(pjsua.med_endpt);
+	if (status != PJ_SUCCESS) {
+	    pjsua_perror(THIS_FILE, "Error initializing G711 codec",
+		         status);
+	    return status;
+	}
+
+	pjsua.codec_arg[pjsua.codec_cnt] = pj_str("pcmu");
+	pjsua.codec_deinit[pjsua.codec_cnt] = &pjmedia_codec_g711_deinit;
+	pjsua.codec_cnt++;
+	pjsua.codec_arg[pjsua.codec_cnt] = pj_str("pcma");
+	pjsua.codec_deinit[pjsua.codec_cnt] = &pjmedia_codec_g711_deinit;
+	pjsua.codec_cnt++;
+
+    } else {
+
+	/* If user specifies the exact codec to be used, then create only
+	 * those codecs.
+	 */
+	int i;
+
+	for (i=0; i<pjsua.codec_cnt; ++i) {
+	
+	    /* Is it speex? */
+	    if (!pj_stricmp2(&pjsua.codec_arg[i], "speex")) {
+
+		unsigned option = PJMEDIA_SPEEX_NO_WB | PJMEDIA_SPEEX_NO_UWB;
+
+		/* Register speex. */
+		if (pjsua.clock_rate >= 16000)
+		    option &= ~(PJMEDIA_SPEEX_NO_WB);
+		if (pjsua.clock_rate >= 32000)
+		    option &= ~(PJMEDIA_SPEEX_NO_UWB);
+
+		status = pjmedia_codec_speex_init(pjsua.med_endpt, option,
+						  -1, -1);
+		if (status != PJ_SUCCESS) {
+		    pjsua_perror(THIS_FILE, "Error initializing Speex codec",
+			         status);
+		    return status;
+		}
+
+		pjsua.codec_deinit[i] = &pjmedia_codec_speex_deinit;
+	    }
+	    /* Is it gsm? */
+	    else if (!pj_stricmp2(&pjsua.codec_arg[i], "gsm")) {
+
+		status = pjmedia_codec_gsm_init(pjsua.med_endpt);
+		if (status != PJ_SUCCESS) {
+		    pjsua_perror(THIS_FILE, "Error initializing GSM codec",
+			         status);
+		    return status;
+		}
+
+		pjsua.codec_deinit[i] = &pjmedia_codec_gsm_deinit;
+
+	    }
+	    /* Is it pcma/pcmu? */
+	    else if (!pj_stricmp2(&pjsua.codec_arg[i], "pcmu") ||
+		     !pj_stricmp2(&pjsua.codec_arg[i], "pcma"))
+	    {
+
+		status = pjmedia_codec_g711_init(pjsua.med_endpt);
+		if (status != PJ_SUCCESS) {
+		    pjsua_perror(THIS_FILE, "Error initializing G711 codec",
+			         status);
+		    return status;
+		}
+
+		pjsua.codec_deinit[i] = &pjmedia_codec_g711_deinit;
+
+	    }
+	    /* Don't know about this codec... */
+	    else {
+
+		PJ_LOG(1,(THIS_FILE, "Error: unsupported codecs %s",
+			  pjsua.codec_arg[i].ptr));
+		return PJMEDIA_CODEC_EUNSUP;
+	    }
+	}
+    }
 
     /* Init conference bridge. */
 
@@ -661,6 +764,27 @@ pj_status_t pjsua_start(void)
     }
 
 
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Start pjsua stack.
+ * This will start the registration process, if registration is configured.
+ */
+pj_status_t pjsua_start(void)
+{
+    int i;  /* Must be signed */
+    pjsip_transport *udp_transport;
+    pj_status_t status = PJ_SUCCESS;
+
+    /*
+     * Init media subsystem (codecs, conference bridge, et all).
+     */
+    status = init_media();
+    if (status != PJ_SUCCESS)
+	return status;
+
     /* Init sockets (STUN etc): */
     for (i=0; i<(int)pjsua.max_calls; ++i) {
 	status = init_sockets(i==0, &pjsua.calls[i].skinfo);
@@ -870,7 +994,7 @@ static void busy_sleep(unsigned msec)
  */
 pj_status_t pjsua_destroy(void)
 {
-    int i;
+    int i;  /* Must be signed */
 
     /* Signal threads to quit: */
     pjsua.quit_flag = 1;
@@ -907,14 +1031,20 @@ pj_status_t pjsua_destroy(void)
     if (pjsua.mconf)
 	pjmedia_conf_destroy(pjsua.mconf);
 
-    /* Shutdown pjmedia-codec: */
-    pjmedia_codec_deinit();
-
     /* Destroy sound framework: 
      * (this should be done in pjmedia_shutdown())
      */
     pj_snd_deinit();
 
+    /* Shutdown all codecs: */
+    for (i = pjsua.codec_cnt-1; i >= 0; --i) {
+	(*pjsua.codec_deinit[i])();
+    }
+
+    /* Destroy media endpoint. */
+
+    pjmedia_endpt_destroy(pjsua.med_endpt);
+
     /* Destroy endpoint. */
 
     pjsip_endpt_destroy(pjsua.endpt);
diff --git a/pjsip/src/pjsua-lib/pjsua_settings.c b/pjsip/src/pjsua-lib/pjsua_settings.c
index 9e1d3ff8..810d645a 100644
--- a/pjsip/src/pjsua-lib/pjsua_settings.c
+++ b/pjsip/src/pjsua-lib/pjsua_settings.c
@@ -90,7 +90,8 @@ static void usage(void)
     puts("  --auto-play         Automatically play the file (to incoming calls only)");
     puts("  --auto-loop         Automatically loop incoming RTP to outgoing RTP");
     puts("  --auto-conf         Automatically put incoming calls to conference");
-    puts("  --rtp-port=N	Base port to try for RTP");
+    puts("  --rtp-port=N        Base port to try for RTP");
+    puts("  --add-codec=name    Specify alternate codec order");
     puts("");
     puts("Buddy List (can be more than one):");
     puts("  --add-buddy url     Add the specified URL to the buddy list.");
@@ -220,7 +221,7 @@ pj_status_t pjsua_parse_args(int argc, char *argv[])
 	   OPT_ADD_BUDDY, OPT_OFFER_X_MS_MSG, OPT_NO_PRESENCE,
 	   OPT_AUTO_ANSWER, OPT_AUTO_HANGUP, OPT_AUTO_PLAY, OPT_AUTO_LOOP,
 	   OPT_AUTO_CONF,
-	   OPT_PLAY_FILE, OPT_WB, OPT_UWB, OPT_RTP_PORT,
+	   OPT_PLAY_FILE, OPT_WB, OPT_UWB, OPT_RTP_PORT, OPT_ADD_CODEC,
 	   OPT_NEXT_ACCOUNT, OPT_NEXT_CRED, OPT_MAX_CALLS,
     };
     struct option long_options[] = {
@@ -255,6 +256,7 @@ pj_status_t pjsua_parse_args(int argc, char *argv[])
 	{ "auto-conf",  0, 0, OPT_AUTO_CONF},
 	{ "play-file",  1, 0, OPT_PLAY_FILE},
 	{ "rtp-port",	1, 0, OPT_RTP_PORT},
+	{ "add-codec",  1, 0, OPT_ADD_CODEC},
 	{ "next-account",0,0, OPT_NEXT_ACCOUNT},
 	{ "next-cred",	0, 0, OPT_NEXT_CRED},
 	{ "max-calls",	1, 0, OPT_MAX_CALLS},
@@ -490,6 +492,10 @@ pj_status_t pjsua_parse_args(int argc, char *argv[])
 		return -1;
 	    }
 
+	case OPT_ADD_CODEC:
+	    pjsua.codec_arg[pjsua.codec_cnt++] = pj_str(optarg);
+	    break;
+
 	case OPT_AUTO_ANSWER:
 	    pjsua.auto_answer = my_atoi(optarg);
 	    if (pjsua.auto_answer < 100 || pjsua.auto_answer > 699) {