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43 lines
2.4 KiB
43 lines
2.4 KiB
/*
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decodeGains.h
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Copyright (C) 2011 Belledonne Communications, Grenoble, France
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Author : Johan Pascal
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef DECODEGAINS_H
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#define DECODEGAINS_H
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/* init function */
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void initDecodeGains(bcg729DecoderChannelContextStruct *decoderChannelContext);
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/*****************************************************************************/
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/* decodeGains : decode adaptive and fixed codebooks gains as in spec 4.1.5 */
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/* parameters: */
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/* -(i/o) decoderChannelContext : the channel context data */
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/* -(i) GA : parameter GA: Gain Codebook Stage 1 (3 bits) */
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/* -(i) GB : paremeter GB: Gain Codebook Stage 2 (4 bits) */
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/* -(i) fixedCodebookVector: 40 values current fixed Codebook vector */
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/* in Q1.13. */
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/* -(i) frameErasureFlag : set in case of frame erasure */
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/* -(i/o) adaptativeCodebookGain : input previous/output current */
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/* subframe Pitch Gain in Q14 */
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/* -(i/o) fixedCodebookGain : input previous/output current Fixed */
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/* Codebook Gain in Q1 */
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/* */
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/*****************************************************************************/
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void decodeGains (bcg729DecoderChannelContextStruct *decoderChannelContext, uint16_t GA, uint16_t GB, word16_t *fixedCodebookVector, uint8_t frameErasureFlag,
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word16_t *adaptativeCodebookGain, word16_t *fixedCodebookGain);
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#endif /* ifndef DECODEGAINS_H */
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