From 81d1b2797aa3945c529d57f9ddf6179ec2b392a4 Mon Sep 17 00:00:00 2001
From: Benny Prijono <bennylp@teluu.com>
Date: Sat, 7 Apr 2007 12:47:34 +0000
Subject: Moved ilbc to third_party directory

git-svn-id: http://svn.pjsip.org/repos/pjproject/branches/split-3rd-party@1169 74dad513-b988-da41-8d7b-12977e46ad98
---
 third_party/ilbc/hpInput.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 third_party/ilbc/hpInput.c

(limited to 'third_party/ilbc/hpInput.c')

diff --git a/third_party/ilbc/hpInput.c b/third_party/ilbc/hpInput.c
new file mode 100644
index 00000000..7ceee096
--- /dev/null
+++ b/third_party/ilbc/hpInput.c
@@ -0,0 +1,65 @@
+
+   /******************************************************************
+
+       iLBC Speech Coder ANSI-C Source Code
+
+
+
+
+
+       hpInput.c
+
+       Copyright (C) The Internet Society (2004).
+       All Rights Reserved.
+
+   ******************************************************************/
+
+   #include "constants.h"
+
+   /*----------------------------------------------------------------*
+    *  Input high-pass filter
+    *---------------------------------------------------------------*/
+
+   void hpInput(
+       float *In,  /* (i) vector to filter */
+       int len,    /* (i) length of vector to filter */
+       float *Out, /* (o) the resulting filtered vector */
+       float *mem  /* (i/o) the filter state */
+   ){
+       int i;
+       float *pi, *po;
+
+       /* all-zero section*/
+
+       pi = &In[0];
+       po = &Out[0];
+       for (i=0; i<len; i++) {
+           *po = hpi_zero_coefsTbl[0] * (*pi);
+           *po += hpi_zero_coefsTbl[1] * mem[0];
+           *po += hpi_zero_coefsTbl[2] * mem[1];
+
+           mem[1] = mem[0];
+           mem[0] = *pi;
+           po++;
+           pi++;
+
+       }
+
+       /* all-pole section*/
+
+       po = &Out[0];
+       for (i=0; i<len; i++) {
+           *po -= hpi_pole_coefsTbl[1] * mem[2];
+           *po -= hpi_pole_coefsTbl[2] * mem[3];
+
+           mem[3] = mem[2];
+           mem[2] = *po;
+           po++;
+
+
+
+
+
+       }
+   }
+
-- 
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