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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 */ |