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  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. #include "libavutil/rational.h"
  33. #include "get_bits.h"
  34.  
  35. /** Table for conversion between TTBLK and TTMB */
  36. extern const int ff_vc1_ttblk_to_tt[3][8];
  37.  
  38. extern const int ff_vc1_ttfrm_to_tt[4];
  39.  
  40. /** MV P mode - the 5th element is only used for mode 1 */
  41. extern const uint8_t ff_vc1_mv_pmode_table[2][5];
  42. extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
  43.  
  44. extern const int ff_vc1_fps_nr[7], ff_vc1_fps_dr[2];
  45. extern const uint8_t ff_vc1_pquant_table[3][32];
  46.  
  47. /* MBMODE table for interlaced frame P-picture */
  48. extern const uint8_t ff_vc1_mbmode_intfrp[2][15][4];
  49.  
  50. /** @name VC-1 VLC tables and defines
  51.  *  @todo TODO move this into the context
  52.  */
  53. //@{
  54. #define VC1_BFRACTION_VLC_BITS 7
  55. extern VLC ff_vc1_bfraction_vlc;
  56. #define VC1_IMODE_VLC_BITS 4
  57. extern VLC ff_vc1_imode_vlc;
  58. #define VC1_NORM2_VLC_BITS 3
  59. extern VLC ff_vc1_norm2_vlc;
  60. #define VC1_NORM6_VLC_BITS 9
  61. extern VLC ff_vc1_norm6_vlc;
  62. /* Could be optimized, one table only needs 8 bits */
  63. #define VC1_TTMB_VLC_BITS 9 //12
  64. extern VLC ff_vc1_ttmb_vlc[3];
  65. #define VC1_MV_DIFF_VLC_BITS 9 //15
  66. extern VLC ff_vc1_mv_diff_vlc[4];
  67. #define VC1_CBPCY_P_VLC_BITS 9 //14
  68. extern VLC ff_vc1_cbpcy_p_vlc[4];
  69. #define VC1_ICBPCY_VLC_BITS 9
  70. extern VLC ff_vc1_icbpcy_vlc[8];
  71. #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
  72. extern VLC ff_vc1_4mv_block_pattern_vlc[4];
  73. #define VC1_2MV_BLOCK_PATTERN_VLC_BITS 3
  74. extern VLC ff_vc1_2mv_block_pattern_vlc[4];
  75. #define VC1_TTBLK_VLC_BITS 5
  76. extern VLC ff_vc1_ttblk_vlc[3];
  77. #define VC1_SUBBLKPAT_VLC_BITS 6
  78. extern VLC ff_vc1_subblkpat_vlc[3];
  79. #define VC1_INTFR_4MV_MBMODE_VLC_BITS 9
  80. extern VLC ff_vc1_intfr_4mv_mbmode_vlc[4];
  81. #define VC1_INTFR_NON4MV_MBMODE_VLC_BITS 6
  82. extern VLC ff_vc1_intfr_non4mv_mbmode_vlc[4];
  83. #define VC1_IF_MMV_MBMODE_VLC_BITS 5
  84. extern VLC ff_vc1_if_mmv_mbmode_vlc[8];
  85. #define VC1_IF_1MV_MBMODE_VLC_BITS 5
  86. extern VLC ff_vc1_if_1mv_mbmode_vlc[8];
  87. #define VC1_1REF_MVDATA_VLC_BITS 9
  88. extern VLC ff_vc1_1ref_mvdata_vlc[4];
  89. #define VC1_2REF_MVDATA_VLC_BITS 9
  90. extern VLC ff_vc1_2ref_mvdata_vlc[8];
  91.  
  92. extern VLC ff_vc1_ac_coeff_table[8];
  93.  
  94. #define VC1_IF_MBMODE_VLC_BITS 5
  95. //@}
  96.  
  97.  
  98. /* Denominator used for ff_vc1_bfraction_lut */
  99. #define B_FRACTION_DEN  256
  100.  
  101. /* pre-computed scales for all bfractions and base=256 */
  102. extern const int16_t ff_vc1_bfraction_lut[23];
  103. extern const uint8_t ff_vc1_bfraction_bits[23];
  104. extern const uint8_t ff_vc1_bfraction_codes[23];
  105.  
  106. //Same as H.264
  107. extern const AVRational ff_vc1_pixel_aspect[16];
  108.  
  109. /* BitPlane IMODE - such a small table... */
  110. extern const uint8_t ff_vc1_imode_codes[7];
  111. extern const uint8_t ff_vc1_imode_bits[7];
  112.  
  113. /* Normal-2 imode */
  114. extern const uint8_t ff_vc1_norm2_codes[4];
  115. extern const uint8_t ff_vc1_norm2_bits[4];
  116. extern const uint16_t ff_vc1_norm6_codes[64];
  117. extern const uint8_t ff_vc1_norm6_bits[64];
  118. /* Normal-6 imode */
  119. extern const uint8_t ff_vc1_norm6_spec[64][5];
  120.  
  121. /* 4MV Block pattern VLC tables */
  122. extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
  123. extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
  124.  
  125. /* 2MV Block pattern VLC tables */
  126. extern const uint8_t ff_vc1_2mv_block_pattern_codes[4][4];
  127. extern const uint8_t ff_vc1_2mv_block_pattern_bits[4][4];
  128.  
  129. extern const uint8_t ff_wmv3_dc_scale_table[32];
  130.  
  131. /* P-Picture CBPCY VLC tables */
  132. extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
  133. extern const uint8_t ff_vc1_cbpcy_p_bits[4][64];
  134.  
  135. /* Interlaced CBPCY VLC tables (Table 124 - Table 131) */
  136. extern const uint16_t ff_vc1_icbpcy_p_codes[8][63];
  137. extern const uint8_t ff_vc1_icbpcy_p_bits[8][63];
  138.  
  139. /* MacroBlock Transform Type: 7.1.3.11, p89
  140.  * 8x8:B
  141.  * 8x4:B:btm  8x4:B:top  8x4:B:both,
  142.  * 4x8:B:right  4x8:B:left  4x8:B:both
  143.  * 4x4:B  8x8:MB
  144.  * 8x4:MB:btm  8x4:MB:top  8x4,MB,both
  145.  * 4x8,MB,right  4x8,MB,left
  146.  * 4x4,MB                               */
  147. extern const uint16_t ff_vc1_ttmb_codes[3][16];
  148.  
  149. extern const uint8_t ff_vc1_ttmb_bits[3][16];
  150.  
  151. /* TTBLK (Transform Type per Block) tables */
  152. extern const uint8_t ff_vc1_ttblk_codes[3][8];
  153. extern const uint8_t ff_vc1_ttblk_bits[3][8];
  154.  
  155. /* SUBBLKPAT tables, p93-94, reordered */
  156. extern const uint8_t ff_vc1_subblkpat_codes[3][15];
  157. extern const uint8_t ff_vc1_subblkpat_bits[3][15];
  158.  
  159. /* MV differential tables, p265 */
  160. extern const uint16_t ff_vc1_mv_diff_codes[4][73];
  161. extern const uint8_t ff_vc1_mv_diff_bits[4][73];
  162.  
  163. /* Interlaced frame picture MBMODE VLC tables (p. 246, p. 360) */
  164. extern const uint16_t ff_vc1_intfr_4mv_mbmode_codes[4][15];
  165. extern const uint8_t ff_vc1_intfr_4mv_mbmode_bits[4][15];
  166. extern const uint8_t ff_vc1_intfr_non4mv_mbmode_codes[4][9];
  167. extern const uint8_t ff_vc1_intfr_non4mv_mbmode_bits[4][9];
  168.  
  169. /* Interlaced field picture MBMODE VLC tables (p. 356 - 11.4.1, 11.4.2) */
  170. extern const uint8_t ff_vc1_if_mmv_mbmode_codes[8][8];
  171. extern const uint8_t ff_vc1_if_mmv_mbmode_bits[8][8];
  172. extern const uint8_t ff_vc1_if_1mv_mbmode_codes[8][6];
  173. extern const uint8_t ff_vc1_if_1mv_mbmode_bits[8][6];
  174.  
  175. /* Interlaced frame/field picture MVDATA VLC tables */
  176. /* 1-reference tables */
  177. extern const uint32_t ff_vc1_1ref_mvdata_codes[4][72];
  178. extern const uint8_t ff_vc1_1ref_mvdata_bits[4][72];
  179. /* 2-reference tables */
  180. extern const uint32_t ff_vc1_2ref_mvdata_codes[8][126];
  181. extern const uint8_t ff_vc1_2ref_mvdata_bits[8][126];
  182.  
  183. /* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
  184.  
  185. /* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
  186. extern const uint8_t ff_vc1_simple_progressive_4x4_zz [16];
  187. extern const uint8_t ff_vc1_adv_progressive_8x4_zz [32];
  188. extern const uint8_t ff_vc1_adv_progressive_4x8_zz [32];
  189. extern const uint8_t ff_vc1_adv_interlaced_8x8_zz [64];
  190. extern const uint8_t ff_vc1_adv_interlaced_8x4_zz [32];
  191. extern const uint8_t ff_vc1_adv_interlaced_4x8_zz [32];
  192. extern const uint8_t ff_vc1_adv_interlaced_4x4_zz [16];
  193. extern const uint8_t ff_vc1_intra_horz_8x8_zz [64];
  194. extern const uint8_t ff_vc1_intra_vert_8x8_zz [64];
  195.  
  196. /* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
  197. extern const int32_t ff_vc1_dqscale[63];
  198.  
  199. /* P Interlaced field picture MV predictor scaling values (Table 114) */
  200. extern const uint16_t ff_vc1_field_mvpred_scales[2][7][4];
  201. /* B Interlaced field picture backward MV predictor scaling values for first field (Table 115) */
  202. extern const uint16_t ff_vc1_b_field_mvpred_scales[7][4];
  203.  
  204. #define AC_MODES 8
  205.  
  206. extern const int ff_vc1_ac_sizes[AC_MODES];
  207.  
  208. #endif /* AVCODEC_VC1DATA_H */
  209.