You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
2.7 KiB
44 lines
2.7 KiB
/*
|
|
gainQuantization.h
|
|
|
|
Copyright (C) 2011 Belledonne Communications, Grenoble, France
|
|
Author : Johan Pascal
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
#ifndef GAINQUANTIZATION_H
|
|
#define GAINQUANTIZATION_H
|
|
void initGainQuantization(bcg729EncoderChannelContextStruct *encoderChannelContext);
|
|
/*****************************************************************************/
|
|
/* gainQuantization : compute quantized adaptative and fixed codebooks gains */
|
|
/* spec 3.9 */
|
|
/* parameters: */
|
|
/* -(i/o) encoderChannelContext : the channel context data */
|
|
/* -(i) targetSignal: 40 values in Q0, x in eq63 */
|
|
/* -(i) filteredAdaptativeCodebookVector: 40 values in Q0, y in eq63 */
|
|
/* -(i) convolvedFixedCodebookVector: 40 values in Q12, z in eq63 */
|
|
/* -(i) fixedCodebookVector: 40 values in Q13 */
|
|
/* -(i) xy in Q0 on 64 bits term of eq63 computed previously */
|
|
/* -(i) yy in Q0 on 64 bits term of eq63 computed previously */
|
|
/* -(o) quantizedAdaptativeCodebookGain : in Q14 */
|
|
/* -(o) quantizedFixedCodebookGain : in Q1 */
|
|
/* -(o) gainCodebookStage1 : GA parameter value (3 bits) */
|
|
/* -(o) gainCodebookStage2 : GB parameter value (4 bits) */
|
|
/* */
|
|
/*****************************************************************************/
|
|
void gainQuantization(bcg729EncoderChannelContextStruct *encoderChannelContext, word16_t targetSignal[], word16_t filteredAdaptativeCodebookVector[], word16_t convolvedFixedCodebookVector[], word16_t fixedCodebookVector[], word64_t Xy64, word64_t Yy64,
|
|
word16_t *quantizedAdaptativeCodebookGain, word16_t *quantizedFixedCodebookGain, uint16_t *gainCodebookStage1, uint16_t *gainCodebookStage2);
|
|
|
|
#endif /* ifndef GAINQUANTIZATION_H */
|