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Add iLBC codec

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@852 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2003-04-15 04:36:52 +00:00
parent dbe00ec2d2
commit c4da749362
58 changed files with 6857 additions and 1 deletions
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55
codecs/ilbc/createCB.h Executable file
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/******************************************************************
iLBC Speech Coder ANSI-C Source Code
createCB.h
Copyright (c) 2001,
Global IP Sound AB.
All rights reserved.
******************************************************************/
#ifndef __iLBC_CREATECB_H
#define __iLBC_CREATECB_H
void filteredCBvecs(
float *cbvectors, /* (o) Codebook vector for the
higher section */
float *mem, /* (i) Buffer to create codebook
vectors from */
int lMem /* (i) Length of buffer */
);
void searchAugmentedCB(
int low, /* (i) Start index for the search */
int high, /* (i) End index for the search */
int stage, /* (i) Current stage */
int startIndex, /* (i) CB index for the first
augmented vector */
float *target, /* (i) Target vector for encoding */
float *buffer, /* (i) Pointer to the end of the
buffer for augmented codebook
construction */
float *max_measure, /* (i/o) Currently maximum measure */
int *best_index,/* (o) Currently the best index */
float *gain, /* (o) Currently the best gain */
float *energy, /* (o) Energy of augmented
codebook vectors */
float *invenergy/* (o) Inv energy of aug codebook
vectors */
);
void createAugmentedVec(
int index, /* (i) Index for the aug vector
to be created */
float *buffer, /* (i) Pointer to the end of the
buffer for augmented codebook
construction */
float *cbVec /* (o) The construced codebook vector */
);
#endif