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

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

1 files changed, 92 insertions, 0 deletions

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