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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[5], ff_vc1_fps_dr[2];
00045 extern const uint8_t ff_vc1_pquant_table[3][32];
00046 
00051 #define VC1_BFRACTION_VLC_BITS 7
00052 extern VLC ff_vc1_bfraction_vlc;
00053 #define VC1_IMODE_VLC_BITS 4
00054 extern VLC ff_vc1_imode_vlc;
00055 #define VC1_NORM2_VLC_BITS 3
00056 extern VLC ff_vc1_norm2_vlc;
00057 #define VC1_NORM6_VLC_BITS 9
00058 extern VLC ff_vc1_norm6_vlc;
00059 /* Could be optimized, one table only needs 8 bits */
00060 #define VC1_TTMB_VLC_BITS 9 //12
00061 extern VLC ff_vc1_ttmb_vlc[3];
00062 #define VC1_MV_DIFF_VLC_BITS 9 //15
00063 extern VLC ff_vc1_mv_diff_vlc[4];
00064 #define VC1_CBPCY_P_VLC_BITS 9 //14
00065 extern VLC ff_vc1_cbpcy_p_vlc[4];
00066 #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
00067 extern VLC ff_vc1_4mv_block_pattern_vlc[4];
00068 #define VC1_TTBLK_VLC_BITS 5
00069 extern VLC ff_vc1_ttblk_vlc[3];
00070 #define VC1_SUBBLKPAT_VLC_BITS 6
00071 extern VLC ff_vc1_subblkpat_vlc[3];
00072 
00073 extern VLC ff_vc1_ac_coeff_table[8];
00075 
00076 
00077 #if 0 //original bfraction from vc9data.h, not conforming to standard
00078 /* Denominator used for ff_vc1_bfraction_lut */
00079 #define B_FRACTION_DEN  840
00080 
00081 /* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
00082 extern const int16_t ff_vc1_bfraction_lut[23];
00083 #else
00084 /* Denominator used for ff_vc1_bfraction_lut */
00085 #define B_FRACTION_DEN  256
00086 
00087 /* pre-computed scales for all bfractions and base=256 */
00088 extern const int16_t ff_vc1_bfraction_lut[23];
00089 #endif
00090 
00091 extern const uint8_t ff_vc1_bfraction_bits[23];
00092 extern const uint8_t ff_vc1_bfraction_codes[23];
00093 
00094 //Same as H.264
00095 extern const AVRational ff_vc1_pixel_aspect[16];
00096 
00097 /* BitPlane IMODE - such a small table... */
00098 extern const uint8_t ff_vc1_imode_codes[7];
00099 extern const uint8_t ff_vc1_imode_bits[7];
00100 
00101 /* Normal-2 imode */
00102 extern const uint8_t ff_vc1_norm2_codes[4];
00103 extern const uint8_t ff_vc1_norm2_bits[4];
00104 extern const uint16_t ff_vc1_norm6_codes[64];
00105 extern const uint8_t ff_vc1_norm6_bits[64];
00106 /* Normal-6 imode */
00107 extern const uint8_t ff_vc1_norm6_spec[64][5];
00108 
00109 /* 4MV Block pattern VLC tables */
00110 extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
00111 extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
00112 
00113 extern const uint8_t wmv3_dc_scale_table[32];
00114 
00115 /* P-Picture CBPCY VLC tables */
00116 extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
00117 extern const uint8_t ff_vc1_cbpcy_p_bits[4][64];
00118 
00119 /* MacroBlock Transform Type: 7.1.3.11, p89
00120  * 8x8:B
00121  * 8x4:B:btm  8x4:B:top  8x4:B:both,
00122  * 4x8:B:right  4x8:B:left  4x8:B:both
00123  * 4x4:B  8x8:MB
00124  * 8x4:MB:btm  8x4:MB:top  8x4,MB,both
00125  * 4x8,MB,right  4x8,MB,left
00126  * 4x4,MB                               */
00127 extern const uint16_t ff_vc1_ttmb_codes[3][16];
00128 
00129 extern const uint8_t ff_vc1_ttmb_bits[3][16];
00130 
00131 /* TTBLK (Transform Type per Block) tables */
00132 extern const uint8_t ff_vc1_ttblk_codes[3][8];
00133 extern const uint8_t ff_vc1_ttblk_bits[3][8];
00134 
00135 /* SUBBLKPAT tables, p93-94, reordered */
00136 extern const uint8_t ff_vc1_subblkpat_codes[3][15];
00137 extern const uint8_t ff_vc1_subblkpat_bits[3][15];
00138 
00139 /* MV differential tables, p265 */
00140 extern const uint16_t ff_vc1_mv_diff_codes[4][73];
00141 extern const uint8_t ff_vc1_mv_diff_bits[4][73];
00142 
00143 /* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
00144 
00145 /* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
00146 extern const int8_t ff_vc1_simple_progressive_4x4_zz [16];
00147 extern const int8_t ff_vc1_adv_progressive_8x4_zz [32];
00148 extern const int8_t ff_vc1_adv_progressive_4x8_zz [32];
00149 extern const int8_t ff_vc1_adv_interlaced_8x8_zz [64];
00150 extern const int8_t ff_vc1_adv_interlaced_8x4_zz [32];
00151 extern const int8_t ff_vc1_adv_interlaced_4x8_zz [32];
00152 extern const int8_t ff_vc1_adv_interlaced_4x4_zz [16];
00153 
00154 /* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
00155 extern const int32_t ff_vc1_dqscale[63];
00156 
00157 #endif /* AVCODEC_VC1DATA_H */

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