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2ba45a60 DM |
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 int16_t ff_gsm_dequant_tab[64][8]; | |
42 | ||
43 | extern const int* const ff_gsm_apcm_bits[][4]; | |
44 | ||
45 | #endif /* AVCODEC_GSMDEC_DATA_H */ |