2004-10-14 05:15:48 +00:00
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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createCB.h
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Copyright (C) The Internet Society (2004).
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All Rights Reserved.
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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(
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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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);
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void searchAugmentedCB(
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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
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vectors */
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);
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void createAugmentedVec(
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int index, /* (i) Index for the aug vector
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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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);
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#endif
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