Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / adpcm.h
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 */