libavcodec/vc1data.h

   1 /*
   2  * VC-1 and WMV3 decoder
   3  * copyright (c) 2006 Konstantin Shishkov
   4  * (c) 2005 anonymous, Alex Beregszaszi, Michael Niedermayer
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * @file
  25  * VC-1 tables.
  26  */
  27
  28 #ifndef AVCODEC_VC1DATA_H
  29 #define AVCODEC_VC1DATA_H
  30
  31 #include <stdint.h>
  32
  33 #include "libavutil/attributes_internal.h"
  34 #include "libavutil/rational.h"
  35
  36 #include "vlc.h"
  37
  38 FF_VISIBILITY_PUSH_HIDDEN
  39 /** Table for conversion between TTBLK and TTMB */
  40 extern const int ff_vc1_ttblk_to_tt[3][8];
  41
  42 extern const int ff_vc1_ttfrm_to_tt[4];
  43
  44 /** MV P mode - the 5th element is only used for mode 1 */
  45 extern const uint8_t ff_vc1_mv_pmode_table[2][5];
  46 extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
  47
  48 extern const int ff_vc1_fps_nr[7], ff_vc1_fps_dr[2];
  49 extern const uint8_t ff_vc1_pquant_table[3][32];
  50
  51 /* MBMODE table for interlaced frame P-picture */
  52 extern const uint8_t ff_vc1_mbmode_intfrp[2][15][4];
  53
  54 /** @name VC-1 VLC tables and defines
  55  *  @todo TODO move this into the context
  56  */
  57 //@{
  58 #define VC1_IMODE_VLC_BITS 4
  59 extern VLCElem ff_vc1_imode_vlc[1 << VC1_IMODE_VLC_BITS];
  60 #define VC1_NORM2_VLC_BITS 3
  61 extern VLCElem ff_vc1_norm2_vlc[1 << VC1_NORM2_VLC_BITS];
  62 #define VC1_NORM6_VLC_BITS 9
  63 extern VLCElem ff_vc1_norm6_vlc[556];
  64 /* Could be optimized, one table only needs 8 bits */
  65 #define VC1_TTMB_VLC_BITS 9 //12
  66 extern const VLCElem *ff_vc1_ttmb_vlc[3];
  67 #define VC1_MV_DIFF_VLC_BITS 9 //15
  68 extern const VLCElem *ff_vc1_mv_diff_vlc[4];
  69 #define VC1_CBPCY_P_VLC_BITS 9 //14
  70 extern const VLCElem *ff_vc1_cbpcy_p_vlc[4];
  71 #define VC1_ICBPCY_VLC_BITS 9
  72 extern const VLCElem *ff_vc1_icbpcy_vlc[8];
  73 #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
  74 extern const VLCElem *ff_vc1_4mv_block_pattern_vlc[4];
  75 #define VC1_2MV_BLOCK_PATTERN_VLC_BITS 3
  76 extern const VLCElem *ff_vc1_2mv_block_pattern_vlc[4];
  77 #define VC1_TTBLK_VLC_BITS 5
  78 extern const VLCElem *ff_vc1_ttblk_vlc[3];
  79 #define VC1_SUBBLKPAT_VLC_BITS 6
  80 extern const VLCElem *ff_vc1_subblkpat_vlc[3];
  81 #define VC1_INTFR_4MV_MBMODE_VLC_BITS 9
  82 extern const VLCElem *ff_vc1_intfr_4mv_mbmode_vlc[4];
  83 #define VC1_INTFR_NON4MV_MBMODE_VLC_BITS 6
  84 extern const VLCElem *ff_vc1_intfr_non4mv_mbmode_vlc[4];
  85 #define VC1_IF_MMV_MBMODE_VLC_BITS 5
  86 extern const VLCElem *ff_vc1_if_mmv_mbmode_vlc[8];
  87 #define VC1_IF_1MV_MBMODE_VLC_BITS 5
  88 extern const VLCElem *ff_vc1_if_1mv_mbmode_vlc[8];
  89 #define VC1_1REF_MVDATA_VLC_BITS 9
  90 extern const VLCElem *ff_vc1_1ref_mvdata_vlc[4];
  91 #define VC1_2REF_MVDATA_VLC_BITS 9
  92 extern const VLCElem *ff_vc1_2ref_mvdata_vlc[8];
  93
  94 extern const VLCElem *ff_vc1_ac_coeff_table[8];
  95
  96 #define VC1_IF_MBMODE_VLC_BITS 5    // as a placeholder for VC1_IF_MMV_MBMODE_VLC_BITS
  97                                     // or VC1_IF_1MV_MBMODE_VLC_BITS since they are the same
  98 //@}
  99
 100 #define B_FRACTION_DEN  256
 101
 102 /* pre-computed scales for all bfractions and base=256 */
 103 extern const int16_t ff_vc1_bfraction_lut[23];
 104
 105 //Same as H.264
 106 extern const AVRational ff_vc1_pixel_aspect[16];
 107
 108 extern const uint8_t ff_wmv3_dc_scale_table[32];
 109
 110 /* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
 111
 112 /* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
 113 extern const uint8_t ff_vc1_simple_progressive_4x4_zz [16];
 114 extern const uint8_t ff_vc1_adv_progressive_8x4_zz [32];
 115 extern const uint8_t ff_vc1_adv_progressive_4x8_zz [32];
 116 extern const uint8_t ff_vc1_adv_interlaced_8x8_zz [64];
 117 extern const uint8_t ff_vc1_adv_interlaced_8x4_zz [32];
 118 extern const uint8_t ff_vc1_adv_interlaced_4x8_zz [32];
 119 extern const uint8_t ff_vc1_adv_interlaced_4x4_zz [16];
 120
 121 /* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
 122 extern const int32_t ff_vc1_dqscale[63];
 123
 124 /* P Interlaced field picture MV predictor scaling values (Table 114) */
 125 extern const uint16_t ff_vc1_field_mvpred_scales[2][7][4];
 126 /* B Interlaced field picture backward MV predictor scaling values for first field (Table 115) */
 127 extern const uint16_t ff_vc1_b_field_mvpred_scales[7][4];
 128
 129 #define AC_MODES 8
 130
 131 extern const int ff_vc1_ac_sizes[AC_MODES];
 132 FF_VISIBILITY_POP_HIDDEN
 133
 134 #endif /* AVCODEC_VC1DATA_H */