Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / ttadata.h
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2ba45a60
DM
1/*
2 * TTA (The Lossless True Audio) data
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#ifndef AVCODEC_TTADATA_H
22#define AVCODEC_TTADATA_H
23
24#include "internal.h"
25
26#define MAX_ORDER 16
27typedef struct TTAFilter {
28 int32_t shift, round, error;
29 int32_t qm[MAX_ORDER];
30 int32_t dx[MAX_ORDER];
31 int32_t dl[MAX_ORDER];
32} TTAFilter;
33
34typedef struct TTARice {
35 uint32_t k0, k1, sum0, sum1;
36} TTARice;
37
38typedef struct TTAChannel {
39 int32_t predictor;
40 TTAFilter filter;
41 TTARice rice;
42} TTAChannel;
43
44extern const uint32_t ff_tta_shift_1[];
45extern const uint32_t * const ff_tta_shift_16;
46extern const uint8_t ff_tta_filter_configs[];
47
48void ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1);
49void ff_tta_filter_init(TTAFilter *c, int32_t shift);
50#endif /* AVCODEC_TTADATA_H */