blob: f3499e8ae26d0a08a97574147c7edc6148128816
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 */ |
47 |