mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.5 KiB
51 lines
1.5 KiB
12 years ago
|
/*
|
||
|
|
* TTA (The Lossless True Audio) data
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVCODEC_TTADATA_H
|
||
|
|
#define AVCODEC_TTADATA_H
|
||
|
|
|
||
|
|
#include "internal.h"
|
||
|
|
|
||
|
|
#define MAX_ORDER 16
|
||
|
|
typedef struct TTAFilter {
|
||
|
|
int32_t shift, round, error;
|
||
|
|
int32_t qm[MAX_ORDER];
|
||
|
|
int32_t dx[MAX_ORDER];
|
||
|
|
int32_t dl[MAX_ORDER];
|
||
|
|
} TTAFilter;
|
||
|
|
|
||
|
|
typedef struct TTARice {
|
||
|
|
uint32_t k0, k1, sum0, sum1;
|
||
|
|
} TTARice;
|
||
|
|
|
||
|
|
typedef struct TTAChannel {
|
||
|
|
int32_t predictor;
|
||
|
|
TTAFilter filter;
|
||
|
|
TTARice rice;
|
||
|
|
} TTAChannel;
|
||
|
|
|
||
|
|
extern const uint32_t ff_tta_shift_1[];
|
||
|
|
extern const uint32_t * const ff_tta_shift_16;
|
||
|
|
extern const uint8_t ff_tta_filter_configs[];
|
||
|
|
|
||
|
|
void ff_tta_rice_init(TTARice *c, uint32_t k0, uint32_t k1);
|
||
|
|
void ff_tta_filter_init(TTAFilter *c, int32_t shift);
|
||
|
|
#endif /* AVCODEC_TTADATA_H */
|