FFmpeg
gsmdec_data.h
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1 /*
2  * gsm 06.10 decoder data
3  * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_GSMDEC_DATA_H
23 #define AVCODEC_GSMDEC_DATA_H
24 
25 #include <stdint.h>
26 #include "avcodec.h"
27 
28 typedef struct GSMContext {
29  // Contains first 120 elements from the previous frame
30  // (used by long_term_synth according to the "lag"),
31  // then in the following 160 elements the current
32  // frame is constructed.
33  int16_t ref_buf[280];
34  int v[9];
35  int lar[2][8];
36  int lar_idx;
37  int msr;
38 } GSMContext;
39 
40 extern const uint16_t ff_gsm_long_term_gain_tab[4];
41 extern const uint8_t ff_gsm_requant_tab[4][8];
42 extern const int16_t ff_gsm_dequant_tab[64][8];
43 
44 extern const int* const ff_gsm_apcm_bits[][4];
45 
46 #endif /* AVCODEC_GSMDEC_DATA_H */
const int *const ff_gsm_apcm_bits[][4]
Definition: gsmdec_data.c:117
int v[9]
Definition: gsmdec_data.h:34
uint8_t
const int16_t ff_gsm_dequant_tab[64][8]
Definition: gsmdec_data.c:36
const uint8_t ff_gsm_requant_tab[4][8]
Definition: gsmdec_data.c:29
Libavcodec external API header.
int16_t ref_buf[280]
Definition: gsmdec_data.h:33
int lar[2][8]
Definition: gsmdec_data.h:35
const uint16_t ff_gsm_long_term_gain_tab[4]
Definition: gsmdec_data.c:25