1cabdff1aSopenharmony_ci/*
2cabdff1aSopenharmony_ci * TTA (The Lossless True Audio) data
3cabdff1aSopenharmony_ci *
4cabdff1aSopenharmony_ci * This file is part of FFmpeg.
5cabdff1aSopenharmony_ci *
6cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or
7cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public
8cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either
9cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version.
10cabdff1aSopenharmony_ci *
11cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful,
12cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of
13cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14cabdff1aSopenharmony_ci * Lesser General Public License for more details.
15cabdff1aSopenharmony_ci *
16cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public
17cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software
18cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19cabdff1aSopenharmony_ci */
20cabdff1aSopenharmony_ci
21cabdff1aSopenharmony_ci#ifndef AVCODEC_TTADATA_H
22cabdff1aSopenharmony_ci#define AVCODEC_TTADATA_H
23cabdff1aSopenharmony_ci
24cabdff1aSopenharmony_ci#include <stdint.h>
25cabdff1aSopenharmony_ci
26cabdff1aSopenharmony_ci#define MAX_ORDER 16
27cabdff1aSopenharmony_citypedef struct TTAFilter {
28cabdff1aSopenharmony_ci    int32_t shift, round, error;
29cabdff1aSopenharmony_ci    int32_t qm[MAX_ORDER];
30cabdff1aSopenharmony_ci    int32_t dx[MAX_ORDER];
31cabdff1aSopenharmony_ci    int32_t dl[MAX_ORDER];
32cabdff1aSopenharmony_ci} TTAFilter;
33cabdff1aSopenharmony_ci
34cabdff1aSopenharmony_citypedef struct TTARice {
35cabdff1aSopenharmony_ci    uint32_t k0, k1, sum0, sum1;
36cabdff1aSopenharmony_ci} TTARice;
37cabdff1aSopenharmony_ci
38cabdff1aSopenharmony_citypedef struct TTAChannel {
39cabdff1aSopenharmony_ci    int32_t predictor;
40cabdff1aSopenharmony_ci    TTAFilter filter;
41cabdff1aSopenharmony_ci    TTARice rice;
42cabdff1aSopenharmony_ci} TTAChannel;
43cabdff1aSopenharmony_ci
44cabdff1aSopenharmony_ciextern const uint32_t ff_tta_shift_1[];
45cabdff1aSopenharmony_ciextern const uint32_t * const ff_tta_shift_16;
46cabdff1aSopenharmony_ciextern const uint8_t ff_tta_filter_configs[];
47cabdff1aSopenharmony_ci
48cabdff1aSopenharmony_civoid ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1);
49cabdff1aSopenharmony_civoid ff_tta_filter_init(TTAFilter *c, int32_t shift);
50cabdff1aSopenharmony_ci#endif /* AVCODEC_TTADATA_H */
51