aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* gsm 06.10 decoder data
* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_GSMDEC_DATA_H
#define AVCODEC_GSMDEC_DATA_H
#include <stdint.h>
#include "avcodec.h"
typedef struct GSMContext {
// Contains first 120 elements from the previous frame
// (used by long_term_synth according to the "lag"),
// then in the following 160 elements the current
// frame is constructed.
int16_t ref_buf[280];
int v[9];
int lar[2][8];
int lar_idx;
int msr;
} GSMContext;
extern const uint16_t ff_gsm_long_term_gain_tab[4];
extern const uint8_t ff_gsm_requant_tab[4][8];
extern const int16_t ff_gsm_dequant_tab[64][8];
extern const int* const ff_gsm_apcm_bits[][4];
#endif /* AVCODEC_GSMDEC_DATA_H */
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