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  1. /*
  2.  * MSMPEG4 backend for encoder and decoder
  3.  * copyright (c) 2001 Fabrice Bellard
  4.  * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  5.  *
  6.  * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
  7.  *
  8.  * This file is part of FFmpeg.
  9.  *
  10.  * FFmpeg is free software; you can redistribute it and/or
  11.  * modify it under the terms of the GNU Lesser General Public
  12.  * License as published by the Free Software Foundation; either
  13.  * version 2.1 of the License, or (at your option) any later version.
  14.  *
  15.  * FFmpeg is distributed in the hope that it will be useful,
  16.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18.  * Lesser General Public License for more details.
  19.  *
  20.  * You should have received a copy of the GNU Lesser General Public
  21.  * License along with FFmpeg; if not, write to the Free Software
  22.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23.  */
  24.  
  25. /**
  26.  * @file
  27.  * MSMPEG4 data tables.
  28.  */
  29.  
  30. #ifndef AVCODEC_MSMPEG4DATA_H
  31. #define AVCODEC_MSMPEG4DATA_H
  32.  
  33. #include "libavutil/common.h"
  34. #include "get_bits.h"
  35. #include "rl.h"
  36.  
  37. /* motion vector table */
  38. typedef struct MVTable {
  39.     int n;
  40.     const uint16_t *table_mv_code;
  41.     const uint8_t *table_mv_bits;
  42.     const uint8_t *table_mvx;
  43.     const uint8_t *table_mvy;
  44.     uint16_t *table_mv_index; /* encoding: convert mv to index in table_mv */
  45.     VLC vlc;                /* decoding: vlc */
  46. } MVTable;
  47.  
  48. extern VLC ff_msmp4_mb_i_vlc;
  49. extern VLC ff_msmp4_dc_luma_vlc[2];
  50. extern VLC ff_msmp4_dc_chroma_vlc[2];
  51.  
  52. /* intra picture macroblock coded block pattern */
  53. extern const uint16_t ff_msmp4_mb_i_table[64][2];
  54.  
  55. #define WMV1_SCANTABLE_COUNT 4
  56.  
  57. extern const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64];
  58.  
  59. #define NB_RL_TABLES  6
  60.  
  61. extern RLTable ff_rl_table[NB_RL_TABLES];
  62. extern uint8_t ff_static_rl_table_store[NB_RL_TABLES][2][2 * MAX_RUN + MAX_LEVEL + 3];
  63.  
  64. extern uint32_t ff_v2_dc_lum_table[512][2];
  65. extern uint32_t ff_v2_dc_chroma_table[512][2];
  66.  
  67. extern const uint8_t ff_wmv1_y_dc_scale_table[32];
  68. extern const uint8_t ff_wmv1_c_dc_scale_table[32];
  69. extern const uint8_t ff_old_ff_y_dc_scale_table[32];
  70.  
  71. extern MVTable ff_mv_tables[2];
  72.  
  73. extern const uint8_t ff_v2_mb_type[8][2];
  74. extern const uint8_t ff_v2_intra_cbpc[4][2];
  75.  
  76. extern const uint32_t ff_table_mb_non_intra[128][2];
  77. extern const uint8_t  ff_table_inter_intra[4][2];
  78.  
  79. extern const uint32_t ff_table0_dc_lum[120][2];
  80. extern const uint32_t ff_table1_dc_lum[120][2];
  81. extern const uint32_t ff_table0_dc_chroma[120][2];
  82. extern const uint32_t ff_table1_dc_chroma[120][2];
  83.  
  84. #define WMV2_INTER_CBP_TABLE_COUNT 4
  85. extern const uint32_t (* const ff_wmv2_inter_table[WMV2_INTER_CBP_TABLE_COUNT])[2];
  86.  
  87. extern const uint8_t ff_wmv2_scantableA[64];
  88. extern const uint8_t ff_wmv2_scantableB[64];
  89.  
  90. #endif /* AVCODEC_MSMPEG4DATA_H */
  91.