blob: 580db7df8bf01ecbf931a0f61c8111a43d2b1ca3
1 | /* |
2 | * Copyright (c) 2001-2003 The FFmpeg project |
3 | * |
4 | * This file is part of FFmpeg. |
5 | * |
6 | * FFmpeg is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2.1 of the License, or (at your option) any later version. |
10 | * |
11 | * FFmpeg is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with FFmpeg; if not, write to the Free Software |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | */ |
20 | |
21 | /** |
22 | * @file |
23 | * ADPCM encoder/decoder common header. |
24 | */ |
25 | |
26 | #ifndef AVCODEC_ADPCM_H |
27 | #define AVCODEC_ADPCM_H |
28 | |
29 | #include <stdint.h> |
30 | |
31 | #define BLKSIZE 1024 |
32 | |
33 | typedef struct ADPCMChannelStatus { |
34 | int predictor; |
35 | int16_t step_index; |
36 | int step; |
37 | /* for encoding */ |
38 | int prev_sample; |
39 | |
40 | /* MS version */ |
41 | int sample1; |
42 | int sample2; |
43 | int coeff1; |
44 | int coeff2; |
45 | int idelta; |
46 | } ADPCMChannelStatus; |
47 | |
48 | #endif /* AVCODEC_ADPCM_H */ |
49 |