aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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 */
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