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createCB.h
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/*
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* iLBC - a library for the iLBC codec
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*
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* createCB.h - The iLBC low bit rate speech codec.
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*
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* Adapted by Steve Underwood <steveu@coppice.org> from the reference
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* iLBC code supplied in RFC3951.
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*
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* Original code Copyright (C) The Internet Society (2004).
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* All changes to produce this version Copyright (C) 2008 by Steve Underwood
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* All Rights Reserved.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: createCB.h,v 1.2 2008/03/06 12:27:38 steveu Exp $
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*/
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#ifndef __iLBC_CREATECB_H
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#define __iLBC_CREATECB_H
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void
filteredCBvecs(
float
*cbvectors,
/* (o) Codebook vector for the
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higher section */
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float
*mem,
/* (i) Buffer to create codebook
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vectors from */
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int
lMem);
/* (i) Length of buffer */
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void
searchAugmentedCB(
int
low,
/* (i) Start index for the search */
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int
high,
/* (i) End index for the search */
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int
stage,
/* (i) Current stage */
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int
startIndex,
/* (i) CB index for the first
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augmented vector */
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float
*target,
/* (i) Target vector for encoding */
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float
*buffer,
/* (i) Pointer to the end of the
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buffer for augmented codebook
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construction */
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float
*max_measure,
/* (i/o) Currently maximum measure */
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int
*best_index,
/* (o) Currently the best index */
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float
*gain,
/* (o) Currently the best gain */
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float
*energy,
/* (o) Energy of augmented
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codebook vectors */
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float
*invenergy);
/* (o) Inv energy of aug codebook vectors */
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void
createAugmentedVec(
int
index,
/* (i) Index for the aug vector to be created */
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float
*buffer,
/* (i) Pointer to the end of the
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buffer for augmented codebook
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construction */
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float
*cbVec);
/* (o) The construced codebook vector */
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#endif
src
createCB.h
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