Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  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
  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];
  32. } TTAFilter;
  33.  
  34. typedef struct TTARice {
  35.     uint32_t k0, k1, sum0, sum1;
  36. } TTARice;
  37.  
  38. typedef struct TTAChannel {
  39.     int32_t predictor;
  40.     TTAFilter filter;
  41.     TTARice rice;
  42. } TTAChannel;
  43.  
  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[];
  47.  
  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 */
  51.