## ffmpeg / libavcodec / vc1data.h @ 986a865f

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1 | 04d7f601 | Diego Biurrun | ```
/*
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2 | ```
* VC-1 and WMV3 decoder
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3 | ```
* copyright (c) 2006 Konstantin Shishkov
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4 | ```
* (c) 2005 anonymous, Alex Beregszaszi, Michael Niedermayer
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5 | ```
*
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6 | b78e7197 | Diego Biurrun | ```
* This file is part of FFmpeg.
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7 | ```
*
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8 | ```
* FFmpeg is free software; you can redistribute it and/or
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9 | 04d7f601 | Diego Biurrun | ```
* modify it under the terms of the GNU Lesser General Public
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10 | ```
* License as published by the Free Software Foundation; either
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11 | b78e7197 | Diego Biurrun | ```
* version 2.1 of the License, or (at your option) any later version.
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12 | 04d7f601 | Diego Biurrun | ```
*
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13 | b78e7197 | Diego Biurrun | ```
* FFmpeg is distributed in the hope that it will be useful,
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14 | 04d7f601 | Diego Biurrun | ```
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | ```
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 | ```
* Lesser General Public License for more details.
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17 | ```
*
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18 | ```
* You should have received a copy of the GNU Lesser General Public
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19 | b78e7197 | Diego Biurrun | ```
* License along with FFmpeg; if not, write to the Free Software
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20 | 04d7f601 | Diego Biurrun | ```
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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21 | ```
*/
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22 | |||

23 | 21aa398f | Alex Beregszaszi | ```
/**
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24 | 10b9c374 | Kostya Shishkov | ```
* @file vc1data.h
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25 | be3492ec | Kostya Shishkov | ```
* VC-1 tables.
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26 | 21aa398f | Alex Beregszaszi | ```
*/
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27 | |||

28 | 10b9c374 | Kostya Shishkov | ```
#ifndef VC1DATA_H
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29 | ```
#define VC1DATA_H
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30 | 21aa398f | Alex Beregszaszi | |

31 | 22c3029d | Kostya Shishkov | ```
/** Table for conversion between TTBLK and TTMB */
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32 | 986a865f | Kostya Shishkov | extern const int ttblk_to_tt[3][8]; |

33 | 22c3029d | Kostya Shishkov | |

34 | 986a865f | Kostya Shishkov | extern const int ttfrm_to_tt[4]; |

35 | 22c3029d | Kostya Shishkov | |

36 | ```
/** MV P mode - the 5th element is only used for mode 1 */
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37 | 986a865f | Kostya Shishkov | extern const uint8_t mv_pmode_table[2][5]; |

38 | extern const uint8_t mv_pmode_table2[2][4]; |
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39 | 22c3029d | Kostya Shishkov | |

40 | 986a865f | Kostya Shishkov | extern const int fps_nr[5], fps_dr[2]; |

41 | extern const uint8_t pquant_table[3][32]; |
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42 | 22c3029d | Kostya Shishkov | |

43 | ```
/** @name VC-1 VLC tables and defines
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44 | ```
* @todo TODO move this into the context
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45 | ```
*/
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46 | ```
//@{
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47 | #define VC1_BFRACTION_VLC_BITS 7 |
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48 | 986a865f | Kostya Shishkov | ```
extern VLC vc1_bfraction_vlc;
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49 | 22c3029d | Kostya Shishkov | #define VC1_IMODE_VLC_BITS 4 |

50 | 986a865f | Kostya Shishkov | ```
extern VLC vc1_imode_vlc;
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51 | 22c3029d | Kostya Shishkov | #define VC1_NORM2_VLC_BITS 3 |

52 | 986a865f | Kostya Shishkov | ```
extern VLC vc1_norm2_vlc;
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53 | 22c3029d | Kostya Shishkov | #define VC1_NORM6_VLC_BITS 9 |

54 | 986a865f | Kostya Shishkov | ```
extern VLC vc1_norm6_vlc;
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55 | 22c3029d | Kostya Shishkov | ```
/* Could be optimized, one table only needs 8 bits */
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56 | #define VC1_TTMB_VLC_BITS 9 //12 |
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57 | 986a865f | Kostya Shishkov | extern VLC vc1_ttmb_vlc[3]; |

58 | 22c3029d | Kostya Shishkov | #define VC1_MV_DIFF_VLC_BITS 9 //15 |

59 | 986a865f | Kostya Shishkov | extern VLC vc1_mv_diff_vlc[4]; |

60 | 22c3029d | Kostya Shishkov | #define VC1_CBPCY_P_VLC_BITS 9 //14 |

61 | 986a865f | Kostya Shishkov | extern VLC vc1_cbpcy_p_vlc[4]; |

62 | 22c3029d | Kostya Shishkov | #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6 |

63 | 986a865f | Kostya Shishkov | extern VLC vc1_4mv_block_pattern_vlc[4]; |

64 | 22c3029d | Kostya Shishkov | #define VC1_TTBLK_VLC_BITS 5 |

65 | 986a865f | Kostya Shishkov | extern VLC vc1_ttblk_vlc[3]; |

66 | 22c3029d | Kostya Shishkov | #define VC1_SUBBLKPAT_VLC_BITS 6 |

67 | 986a865f | Kostya Shishkov | extern VLC vc1_subblkpat_vlc[3]; |

68 | 22c3029d | Kostya Shishkov | |

69 | 986a865f | Kostya Shishkov | extern VLC vc1_ac_coeff_table[8]; |

70 | 22c3029d | Kostya Shishkov | ```
//@}
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71 | |||

72 | |||

73 | 1dc1ce64 | Kostya Shishkov | ```
#if 0 //original bfraction from vc9data.h, not conforming to standard
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74 | 5df68893 | Kostya Shishkov | ```
/* Denominator used for vc1_bfraction_lut */
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75 | ```
#define B_FRACTION_DEN 840
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76 | |||

77 | 21aa398f | Alex Beregszaszi | ```
/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
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78 | 986a865f | Kostya Shishkov | ```
extern const int16_t vc1_bfraction_lut[23];
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79 | 1dc1ce64 | Kostya Shishkov | ```
#else
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80 | ```
/* Denominator used for vc1_bfraction_lut */
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81 | #define B_FRACTION_DEN 256 |
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82 | |||

83 | ```
/* pre-computed scales for all bfractions and base=256 */
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84 | 986a865f | Kostya Shishkov | extern const int16_t vc1_bfraction_lut[23]; |

85 | 1dc1ce64 | Kostya Shishkov | ```
#endif
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86 | |||

87 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_bfraction_bits[23]; |

88 | extern const uint8_t vc1_bfraction_codes[23]; |
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89 | 21aa398f | Alex Beregszaszi | |

90 | ```
//Same as H.264
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91 | 986a865f | Kostya Shishkov | extern const AVRational vc1_pixel_aspect[16]; |

92 | 21aa398f | Alex Beregszaszi | |

93 | ```
/* BitPlane IMODE - such a small table... */
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94 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_imode_codes[7]; |

95 | extern const uint8_t vc1_imode_bits[7]; |
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96 | 21aa398f | Alex Beregszaszi | |

97 | ```
/* Normal-2 imode */
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98 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_norm2_codes[4]; |

99 | extern const uint8_t vc1_norm2_bits[4]; |
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100 | extern const uint16_t vc1_norm6_codes[64]; |
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101 | extern const uint8_t vc1_norm6_bits[64]; |
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102 | 9c68c65a | Michael Niedermayer | ```
/* Normal-6 imode */
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103 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_norm6_spec[64][5]; |

104 | 5e424311 | anonymous | |

105 | 21aa398f | Alex Beregszaszi | ```
/* 4MV Block pattern VLC tables */
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106 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_4mv_block_pattern_codes[4][16]; |

107 | extern const uint8_t vc1_4mv_block_pattern_bits[4][16]; |
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108 | 21aa398f | Alex Beregszaszi | |

109 | 986a865f | Kostya Shishkov | extern const uint8_t wmv3_dc_scale_table[32]; |

110 | 21aa398f | Alex Beregszaszi | |

111 | ```
/* P-Picture CBPCY VLC tables */
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112 | 986a865f | Kostya Shishkov | extern const uint16_t vc1_cbpcy_p_codes[4][64]; |

113 | extern const uint8_t vc1_cbpcy_p_bits[4][64]; |
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114 | 21aa398f | Alex Beregszaszi | |

115 | e5540b3f | anonymous | ```
/* MacroBlock Transform Type: 7.1.3.11, p89
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116 | 21aa398f | Alex Beregszaszi | ```
* 8x8:B
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117 | ```
* 8x4:B:btm 8x4:B:top 8x4:B:both,
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118 | ```
* 4x8:B:right 4x8:B:left 4x8:B:both
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119 | ```
* 4x4:B 8x8:MB
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120 | ```
* 8x4:MB:btm 8x4:MB:top 8x4,MB,both
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121 | ```
* 4x8,MB,right 4x8,MB,left
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122 | ```
* 4x4,MB */
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123 | 986a865f | Kostya Shishkov | extern const uint16_t vc1_ttmb_codes[3][16]; |

124 | 21aa398f | Alex Beregszaszi | |

125 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_ttmb_bits[3][16]; |

126 | 21aa398f | Alex Beregszaszi | |

127 | 7cc84d24 | anonymous | ```
/* TTBLK (Transform Type per Block) tables */
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128 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_ttblk_codes[3][8]; |

129 | extern const uint8_t vc1_ttblk_bits[3][8]; |
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130 | 7cc84d24 | anonymous | |

131 | ```
/* SUBBLKPAT tables, p93-94, reordered */
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132 | 986a865f | Kostya Shishkov | extern const uint8_t vc1_subblkpat_codes[3][15]; |

133 | extern const uint8_t vc1_subblkpat_bits[3][15]; |
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134 | 21aa398f | Alex Beregszaszi | |

135 | ```
/* MV differential tables, p265 */
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136 | 986a865f | Kostya Shishkov | extern const uint16_t vc1_mv_diff_codes[4][73]; |

137 | extern const uint8_t vc1_mv_diff_bits[4][73]; |
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138 | 21aa398f | Alex Beregszaszi | |

139 | 0c040aac | anonymous | ```
/* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
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140 | e5540b3f | anonymous | |

141 | ```
/* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
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142 | 986a865f | Kostya Shishkov | extern const int8_t vc1_normal_zz[64]; |

143 | extern const int8_t vc1_horizontal_zz [64]; |
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144 | extern const int8_t vc1_vertical_zz [64]; |
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145 | extern const int8_t vc1_simple_progressive_8x8_zz [64]; |
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146 | extern const int8_t vc1_simple_progressive_8x4_zz [32]; |
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147 | extern const int8_t vc1_simple_progressive_4x8_zz [32]; |
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148 | extern const int8_t vc1_simple_progressive_4x4_zz [16]; |
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149 | extern const int8_t vc1_adv_progressive_8x4_zz [32]; |
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150 | extern const int8_t vc1_adv_progressive_4x8_zz [32]; |
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151 | extern const int8_t vc1_adv_interlaced_8x8_zz [64]; |
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152 | extern const int8_t vc1_adv_interlaced_8x4_zz [32]; |
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153 | extern const int8_t vc1_adv_interlaced_4x8_zz [32]; |
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154 | extern const int8_t vc1_adv_interlaced_4x4_zz [16]; |
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155 | be3492ec | Kostya Shishkov | |

156 | ```
/* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
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157 | 986a865f | Kostya Shishkov | extern const int32_t vc1_dqscale[63]; |

158 | |||

159 | 10b9c374 | Kostya Shishkov | #endif /* VC1DATA_H */ |