2 * TTA (The Lossless True Audio) data
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVCODEC_TTADATA_H
22 #define AVCODEC_TTADATA_H
27 typedef 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
];
34 typedef struct TTARice
{
35 uint32_t k0
, k1
, sum0
, sum1
;
38 typedef struct TTAChannel
{
44 extern const uint32_t ff_tta_shift_1
[];
45 extern const uint32_t * const ff_tta_shift_16
;
46 extern const uint8_t ff_tta_filter_configs
[];
48 void ff_tta_rice_init(TTARice
*c
, uint32_t k0
, uint32_t k1
);
49 void ff_tta_filter_init(TTAFilter
*c
, int32_t shift
);
50 #endif /* AVCODEC_TTADATA_H */