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libavcodec/vc1data.h

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00001 /*
00002  * VC-1 and WMV3 decoder
00003  * copyright (c) 2006 Konstantin Shishkov
00004  * (c) 2005 anonymous, Alex Beregszaszi, Michael Niedermayer
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00028 #ifndef AVCODEC_VC1DATA_H
00029 #define AVCODEC_VC1DATA_H
00030 
00031 #include <stdint.h>
00032 #include "libavutil/rational.h"
00033 #include "get_bits.h"
00034 
00036 extern const int ff_vc1_ttblk_to_tt[3][8];
00037 
00038 extern const int ff_vc1_ttfrm_to_tt[4];
00039 
00041 extern const uint8_t ff_vc1_mv_pmode_table[2][5];
00042 extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
00043 
00044 extern const int ff_vc1_fps_nr[7], ff_vc1_fps_dr[2];
00045 extern const uint8_t ff_vc1_pquant_table[3][32];
00046 
00047 /* MBMODE table for interlaced frame P-picture */
00048 extern const uint8_t ff_vc1_mbmode_intfrp[2][15][4];
00049 
00054 #define VC1_BFRACTION_VLC_BITS 7
00055 extern VLC ff_vc1_bfraction_vlc;
00056 #define VC1_IMODE_VLC_BITS 4
00057 extern VLC ff_vc1_imode_vlc;
00058 #define VC1_NORM2_VLC_BITS 3
00059 extern VLC ff_vc1_norm2_vlc;
00060 #define VC1_NORM6_VLC_BITS 9
00061 extern VLC ff_vc1_norm6_vlc;
00062 /* Could be optimized, one table only needs 8 bits */
00063 #define VC1_TTMB_VLC_BITS 9 //12
00064 extern VLC ff_vc1_ttmb_vlc[3];
00065 #define VC1_MV_DIFF_VLC_BITS 9 //15
00066 extern VLC ff_vc1_mv_diff_vlc[4];
00067 #define VC1_CBPCY_P_VLC_BITS 9 //14
00068 extern VLC ff_vc1_cbpcy_p_vlc[4];
00069 #define VC1_ICBPCY_VLC_BITS 9
00070 extern VLC ff_vc1_icbpcy_vlc[8];
00071 #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
00072 extern VLC ff_vc1_4mv_block_pattern_vlc[4];
00073 #define VC1_2MV_BLOCK_PATTERN_VLC_BITS 3
00074 extern VLC ff_vc1_2mv_block_pattern_vlc[4];
00075 #define VC1_TTBLK_VLC_BITS 5
00076 extern VLC ff_vc1_ttblk_vlc[3];
00077 #define VC1_SUBBLKPAT_VLC_BITS 6
00078 extern VLC ff_vc1_subblkpat_vlc[3];
00079 #define VC1_INTFR_4MV_MBMODE_VLC_BITS 9
00080 extern VLC ff_vc1_intfr_4mv_mbmode_vlc[4];
00081 #define VC1_INTFR_NON4MV_MBMODE_VLC_BITS 6
00082 extern VLC ff_vc1_intfr_non4mv_mbmode_vlc[4];
00083 #define VC1_IF_MMV_MBMODE_VLC_BITS 5
00084 extern VLC ff_vc1_if_mmv_mbmode_vlc[8];
00085 #define VC1_IF_1MV_MBMODE_VLC_BITS 5
00086 extern VLC ff_vc1_if_1mv_mbmode_vlc[8];
00087 #define VC1_1REF_MVDATA_VLC_BITS 9
00088 extern VLC ff_vc1_1ref_mvdata_vlc[4];
00089 #define VC1_2REF_MVDATA_VLC_BITS 9
00090 extern VLC ff_vc1_2ref_mvdata_vlc[8];
00091 
00092 extern VLC ff_vc1_ac_coeff_table[8];
00093 
00094 #define VC1_IF_MBMODE_VLC_BITS 5
00095 
00096 
00097 
00098 /* Denominator used for ff_vc1_bfraction_lut */
00099 #define B_FRACTION_DEN  256
00100 
00101 /* pre-computed scales for all bfractions and base=256 */
00102 extern const int16_t ff_vc1_bfraction_lut[23];
00103 extern const uint8_t ff_vc1_bfraction_bits[23];
00104 extern const uint8_t ff_vc1_bfraction_codes[23];
00105 
00106 //Same as H.264
00107 extern const AVRational ff_vc1_pixel_aspect[16];
00108 
00109 /* BitPlane IMODE - such a small table... */
00110 extern const uint8_t ff_vc1_imode_codes[7];
00111 extern const uint8_t ff_vc1_imode_bits[7];
00112 
00113 /* Normal-2 imode */
00114 extern const uint8_t ff_vc1_norm2_codes[4];
00115 extern const uint8_t ff_vc1_norm2_bits[4];
00116 extern const uint16_t ff_vc1_norm6_codes[64];
00117 extern const uint8_t ff_vc1_norm6_bits[64];
00118 /* Normal-6 imode */
00119 extern const uint8_t ff_vc1_norm6_spec[64][5];
00120 
00121 /* 4MV Block pattern VLC tables */
00122 extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
00123 extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
00124 
00125 /* 2MV Block pattern VLC tables */
00126 extern const uint8_t ff_vc1_2mv_block_pattern_codes[4][4];
00127 extern const uint8_t ff_vc1_2mv_block_pattern_bits[4][4];
00128 
00129 extern const uint8_t wmv3_dc_scale_table[32];
00130 
00131 /* P-Picture CBPCY VLC tables */
00132 extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
00133 extern const uint8_t ff_vc1_cbpcy_p_bits[4][64];
00134 
00135 /* Interlaced CBPCY VLC tables (Table 124 - Table 131) */
00136 extern const uint16_t ff_vc1_icbpcy_p_codes[8][63];
00137 extern const uint8_t ff_vc1_icbpcy_p_bits[8][63];
00138 
00139 /* MacroBlock Transform Type: 7.1.3.11, p89
00140  * 8x8:B
00141  * 8x4:B:btm  8x4:B:top  8x4:B:both,
00142  * 4x8:B:right  4x8:B:left  4x8:B:both
00143  * 4x4:B  8x8:MB
00144  * 8x4:MB:btm  8x4:MB:top  8x4,MB,both
00145  * 4x8,MB,right  4x8,MB,left
00146  * 4x4,MB                               */
00147 extern const uint16_t ff_vc1_ttmb_codes[3][16];
00148 
00149 extern const uint8_t ff_vc1_ttmb_bits[3][16];
00150 
00151 /* TTBLK (Transform Type per Block) tables */
00152 extern const uint8_t ff_vc1_ttblk_codes[3][8];
00153 extern const uint8_t ff_vc1_ttblk_bits[3][8];
00154 
00155 /* SUBBLKPAT tables, p93-94, reordered */
00156 extern const uint8_t ff_vc1_subblkpat_codes[3][15];
00157 extern const uint8_t ff_vc1_subblkpat_bits[3][15];
00158 
00159 /* MV differential tables, p265 */
00160 extern const uint16_t ff_vc1_mv_diff_codes[4][73];
00161 extern const uint8_t ff_vc1_mv_diff_bits[4][73];
00162 
00163 /* Interlaced frame picture MBMODE VLC tables (p. 246, p. 360) */
00164 extern const uint16_t ff_vc1_intfr_4mv_mbmode_codes[4][15];
00165 extern const uint8_t ff_vc1_intfr_4mv_mbmode_bits[4][15];
00166 extern const uint8_t ff_vc1_intfr_non4mv_mbmode_codes[4][9];
00167 extern const uint8_t ff_vc1_intfr_non4mv_mbmode_bits[4][9];
00168 
00169 /* Interlaced field picture MBMODE VLC tables (p. 356 - 11.4.1, 11.4.2) */
00170 extern const uint8_t ff_vc1_if_mmv_mbmode_codes[8][8];
00171 extern const uint8_t ff_vc1_if_mmv_mbmode_bits[8][8];
00172 extern const uint8_t ff_vc1_if_1mv_mbmode_codes[8][6];
00173 extern const uint8_t ff_vc1_if_1mv_mbmode_bits[8][6];
00174 
00175 /* Interlaced frame/field picture MVDATA VLC tables */
00176 /* 1-reference tables */
00177 extern const uint32_t ff_vc1_1ref_mvdata_codes[4][72];
00178 extern const uint8_t ff_vc1_1ref_mvdata_bits[4][72];
00179 /* 2-reference tables */
00180 extern const uint32_t ff_vc1_2ref_mvdata_codes[8][126];
00181 extern const uint8_t ff_vc1_2ref_mvdata_bits[8][126];
00182 
00183 /* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
00184 
00185 /* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
00186 extern const int8_t ff_vc1_simple_progressive_4x4_zz [16];
00187 extern const int8_t ff_vc1_adv_progressive_8x4_zz [32];
00188 extern const int8_t ff_vc1_adv_progressive_4x8_zz [32];
00189 extern const int8_t ff_vc1_adv_interlaced_8x8_zz [64];
00190 extern const int8_t ff_vc1_adv_interlaced_8x4_zz [32];
00191 extern const int8_t ff_vc1_adv_interlaced_4x8_zz [32];
00192 extern const int8_t ff_vc1_adv_interlaced_4x4_zz [16];
00193 extern const int8_t ff_vc1_intra_horz_8x8_zz [64];
00194 extern const int8_t ff_vc1_intra_vert_8x8_zz [64];
00195 
00196 /* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
00197 extern const int32_t ff_vc1_dqscale[63];
00198 
00199 /* P Interlaced field picture MV predictor scaling values (Table 114) */
00200 extern const uint16_t vc1_field_mvpred_scales[2][7][4];
00201 /* B Interlaced field picture backward MV predictor scaling values for first field (Table 115) */
00202 extern const uint16_t vc1_b_field_mvpred_scales[7][4];
00203 #endif /* AVCODEC_VC1DATA_H */
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