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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #ifndef AVCODEC_INTRAX8_H
  20. #define AVCODEC_INTRAX8_H
  21.  
  22. #include "get_bits.h"
  23. #include "mpegvideo.h"
  24. #include "intrax8dsp.h"
  25. #include "wmv2dsp.h"
  26.  
  27. typedef struct IntraX8Context {
  28.     VLC * j_ac_vlc[4];//they point to the static j_mb_vlc
  29.     VLC * j_orient_vlc;
  30.     VLC * j_dc_vlc[3];
  31.  
  32.     int use_quant_matrix;
  33. //set by ff_intrax8_common_init
  34.     uint8_t * prediction_table;//2*(mb_w*2)
  35.     ScanTable scantable[3];
  36.     WMV2DSPContext wdsp;
  37.     uint8_t idct_permutation[64];
  38. //set by the caller codec
  39.     MpegEncContext * s;
  40.     IntraX8DSPContext dsp;
  41.     int quant;
  42.     int dquant;
  43.     int qsum;
  44. //calculated per frame
  45.     int quant_dc_chroma;
  46.     int divide_quant_dc_luma;
  47.     int divide_quant_dc_chroma;
  48. //changed per block
  49.     int edges;
  50.     int flat_dc;
  51.     int predicted_dc;
  52.     int raw_orient;
  53.     int chroma_orient;
  54.     int orient;
  55.     int est_run;
  56. } IntraX8Context;
  57.  
  58. void ff_intrax8_common_init(IntraX8Context * w, MpegEncContext * const s);
  59. void ff_intrax8_common_end(IntraX8Context * w);
  60. int  ff_intrax8_decode_picture(IntraX8Context * w, int quant, int halfpq);
  61.  
  62. #endif /* AVCODEC_INTRAX8_H */
  63.