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Update to new iLBC codec

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3997 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-10-14 05:15:48 +00:00
parent 7c4337dc91
commit d4ff9abc61
48 changed files with 6976 additions and 6482 deletions
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118
codecs/ilbc/hpOutput.c
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@@ -1,59 +1,59 @@
/******************************************************************
iLBC Speech Coder ANSI-C Source Code
hpOutput.c
Copyright (c) 2001,
Global IP Sound AB.
All rights reserved.
******************************************************************/
#include "constants.h"
#include "hpOutput.h"
/*----------------------------------------------------------------*
* Output high-pass filter
*---------------------------------------------------------------*/
void hpOutput(
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 = hpo_zero_coefsTbl[0] * (*pi);
*po += hpo_zero_coefsTbl[1] * mem[0];
*po += hpo_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 -= hpo_pole_coefsTbl[1] * mem[2];
*po -= hpo_pole_coefsTbl[2] * mem[3];
mem[3] = mem[2];
mem[2] = *po;
po++;
}
}
/******************************************************************
iLBC Speech Coder ANSI-C Source Code
hpOutput.c
Copyright (C) The Internet Society (2004).
All Rights Reserved.
******************************************************************/
#include "constants.h"
/*----------------------------------------------------------------*
* Output high-pass filter
*---------------------------------------------------------------*/
void hpOutput(
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 = hpo_zero_coefsTbl[0] * (*pi);
*po += hpo_zero_coefsTbl[1] * mem[0];
*po += hpo_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 -= hpo_pole_coefsTbl[1] * mem[2];
*po -= hpo_pole_coefsTbl[2] * mem[3];
mem[3] = mem[2];
mem[2] = *po;
po++;
}
}