libavcodec/intrax8.h

   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 FFMPEG_INTRAX8_H
  20 #define FFMPEG_INTRAX8_H
  21
  22 typedef struct{
  23     VLC * j_ac_vlc[4];//they point to the static j_mb_vlc
  24     VLC * j_orient_vlc;
  25     VLC * j_dc_vlc[3];
  26
  27     int use_quant_matrix;
  28 //set by ff_intrax8_common_init
  29     uint8_t * prediction_table;//2*(mb_w*2)
  30     ScanTable scantable[3];
  31 //set by the caller codec
  32     MpegEncContext * s;
  33     int quant;
  34     int dquant;
  35     int qsum;
  36 //calculated per frame
  37     int quant_dc_chroma;
  38     int divide_quant_dc_luma;
  39     int divide_quant_dc_chroma;
  40 //changed per block
  41     int edges;
  42     int flat_dc;
  43     int predicted_dc;
  44     int raw_orient;
  45     int chroma_orient;
  46     int orient;
  47     int est_run;
  48 } IntraX8Context;
  49
  50 void ff_intrax8_common_init(IntraX8Context * w, MpegEncContext * const s);
  51 int  ff_intrax8_decode_picture(IntraX8Context * w, int quant, int halfpq);
  52
  53 #endif /* FFMPEG_INTRAX8_H */