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aacenc_pred.h

aacenc_pred.h 1.6 KB
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  1. /*
    2. 

  2.  * AAC encoder main-type prediction
    3. 

  3.  * Copyright (C) 2015 Rostislav Pehlivanov
    4. 

  4.  *
    5. 

  5.  * This file is part of FFmpeg.
    6. 

  6.  *
    7. 

  7.  * FFmpeg is free software; you can redistribute it and/or
    8. 

  8.  * modify it under the terms of the GNU Lesser General Public
    9. 

  9.  * License as published by the Free Software Foundation; either
    10. 

  10.  * version 2.1 of the License, or (at your option) any later version.
    11. 

  11.  *
    12. 

  12.  * FFmpeg is distributed in the hope that it will be useful,
    13. 

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    14. 

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    15. 

  15.  * Lesser General Public License for more details.
    16. 

  16.  *
    17. 

  17.  * You should have received a copy of the GNU Lesser General Public
    18. 

  18.  * License along with FFmpeg; if not, write to the Free Software
    19. 

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    20. 

  20.  */
    21. 

  21. 

  22. /**
    23. 

  23.  * @file
    24. 

  24.  * AAC encoder main-type prediction
    25. 

  25.  * @author Rostislav Pehlivanov ( atomnuker gmail com )
    26. 

  26.  */
    27. 

  27. 

  28. #ifndef AVCODEC_AACENC_PRED_H
    29. 

  29. #define AVCODEC_AACENC_PRED_H
    30. 

  30. 

  31. #include "aacenc.h"
    32. 

  32. 

  33. /* Every predictor group needs to get reset at least once in this many frames */
    34. 

  34. #define PRED_RESET_FRAME_MIN 240
    35. 

  35. 

  36. /* Any frame with less than this amount of frames since last reset is ok */
    37. 

  37. #define PRED_RESET_MIN 64
    38. 

  38. 

  39. /* Raise to filter any low frequency artifacts due to prediction */
    40. 

  40. #define PRED_SFB_START 10
    41. 

  41. 

  42. void ff_aac_apply_main_pred(AACEncContext *s, SingleChannelElement *sce);
    43. 

  43. void ff_aac_adjust_common_pred(AACEncContext *s, ChannelElement *cpe);
    44. 

  44. void ff_aac_search_for_pred(AACEncContext *s, SingleChannelElement *sce);
    45. 

  45. void ff_aac_encode_main_pred(AACEncContext *s, SingleChannelElement *sce);
    46. 

  46. 

  47. #endif /* AVCODEC_AACENC_PRED_H */
    48.