Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Copyright (c) 2002 The FFmpeg Project
  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_WMV2_H
  22. #define AVCODEC_WMV2_H
  23.  
  24. #include "avcodec.h"
  25. #include "intrax8.h"
  26. #include "mpegvideo.h"
  27. #include "wmv2dsp.h"
  28.  
  29. #define SKIP_TYPE_NONE 0
  30. #define SKIP_TYPE_MPEG 1
  31. #define SKIP_TYPE_ROW  2
  32. #define SKIP_TYPE_COL  3
  33.  
  34.  
  35. typedef struct Wmv2Context {
  36.     MpegEncContext s;
  37.     IntraX8Context x8;
  38.     WMV2DSPContext wdsp;
  39.     int j_type_bit;
  40.     int j_type;
  41.     int abt_flag;
  42.     int abt_type;
  43.     int abt_type_table[6];
  44.     int per_mb_abt;
  45.     int per_block_abt;
  46.     int mspel_bit;
  47.     int cbp_table_index;
  48.     int top_left_mv_flag;
  49.     int per_mb_rl_bit;
  50.     int skip_type;
  51.     int hshift;
  52.  
  53.     ScanTable abt_scantable[2];
  54.     DECLARE_ALIGNED(16, int16_t, abt_block2)[6][64];
  55. } Wmv2Context;
  56.  
  57. void ff_wmv2_common_init(Wmv2Context *w);
  58.  
  59. int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
  60. int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
  61. void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
  62.                        int motion_x, int motion_y);
  63. int ff_wmv2_decode_picture_header(MpegEncContext * s);
  64. int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
  65. void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
  66.                     uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
  67.  
  68. void ff_mspel_motion(MpegEncContext *s,
  69.                      uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
  70.                      uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
  71.                      int motion_x, int motion_y, int h);
  72.  
  73.  
  74. static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
  75. {
  76.     static const uint8_t map[3][3] = {
  77.         { 0, 2, 1 },
  78.         { 1, 0, 2 },
  79.         { 2, 1, 0 },
  80.     };
  81.  
  82.     return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
  83. }
  84.  
  85. #endif /* AVCODEC_WMV2_H */
  86.