2 * VC-1 and WMV3 decoder
3 * copyright (c) 2006 Konstantin Shishkov
4 * (c) 2005 anonymous, Alex Beregszaszi, Michael Niedermayer
6 * This file is part of FFmpeg.
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.
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.
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
31 /** Table for conversion between TTBLK and TTMB */
32 extern const int ff_vc1_ttblk_to_tt[3][8];
34 extern const int ff_vc1_ttfrm_to_tt[4];
36 /** MV P mode - the 5th element is only used for mode 1 */
37 extern const uint8_t ff_vc1_mv_pmode_table[2][5];
38 extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
40 extern const int ff_vc1_fps_nr[5], ff_vc1_fps_dr[2];
41 extern const uint8_t ff_vc1_pquant_table[3][32];
43 /** @name VC-1 VLC tables and defines
44 * @todo TODO move this into the context
47 #define VC1_BFRACTION_VLC_BITS 7
48 extern VLC ff_vc1_bfraction_vlc;
49 #define VC1_IMODE_VLC_BITS 4
50 extern VLC ff_vc1_imode_vlc;
51 #define VC1_NORM2_VLC_BITS 3
52 extern VLC ff_vc1_norm2_vlc;
53 #define VC1_NORM6_VLC_BITS 9
54 extern VLC ff_vc1_norm6_vlc;
55 /* Could be optimized, one table only needs 8 bits */
56 #define VC1_TTMB_VLC_BITS 9 //12
57 extern VLC ff_vc1_ttmb_vlc[3];
58 #define VC1_MV_DIFF_VLC_BITS 9 //15
59 extern VLC ff_vc1_mv_diff_vlc[4];
60 #define VC1_CBPCY_P_VLC_BITS 9 //14
61 extern VLC ff_vc1_cbpcy_p_vlc[4];
62 #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
63 extern VLC ff_vc1_4mv_block_pattern_vlc[4];
64 #define VC1_TTBLK_VLC_BITS 5
65 extern VLC ff_vc1_ttblk_vlc[3];
66 #define VC1_SUBBLKPAT_VLC_BITS 6
67 extern VLC ff_vc1_subblkpat_vlc[3];
69 extern VLC ff_vc1_ac_coeff_table[8];
73 #if 0 //original bfraction from vc9data.h, not conforming to standard
74 /* Denominator used for ff_vc1_bfraction_lut */
75 #define B_FRACTION_DEN 840
77 /* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
78 extern const int16_t ff_vc1_bfraction_lut[23];
80 /* Denominator used for ff_vc1_bfraction_lut */
81 #define B_FRACTION_DEN 256
83 /* pre-computed scales for all bfractions and base=256 */
84 extern const int16_t ff_vc1_bfraction_lut[23];
87 extern const uint8_t ff_vc1_bfraction_bits[23];
88 extern const uint8_t ff_vc1_bfraction_codes[23];
91 extern const AVRational ff_vc1_pixel_aspect[16];
93 /* BitPlane IMODE - such a small table... */
94 extern const uint8_t ff_vc1_imode_codes[7];
95 extern const uint8_t ff_vc1_imode_bits[7];
98 extern const uint8_t ff_vc1_norm2_codes[4];
99 extern const uint8_t ff_vc1_norm2_bits[4];
100 extern const uint16_t ff_vc1_norm6_codes[64];
101 extern const uint8_t ff_vc1_norm6_bits[64];
103 extern const uint8_t ff_vc1_norm6_spec[64][5];
105 /* 4MV Block pattern VLC tables */
106 extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
107 extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
109 extern const uint8_t wmv3_dc_scale_table[32];
111 /* P-Picture CBPCY VLC tables */
112 extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
113 extern const uint8_t ff_vc1_cbpcy_p_bits[4][64];
115 /* MacroBlock Transform Type: 7.1.3.11, p89
117 * 8x4:B:btm 8x4:B:top 8x4:B:both,
118 * 4x8:B:right 4x8:B:left 4x8:B:both
120 * 8x4:MB:btm 8x4:MB:top 8x4,MB,both
121 * 4x8,MB,right 4x8,MB,left
123 extern const uint16_t ff_vc1_ttmb_codes[3][16];
125 extern const uint8_t ff_vc1_ttmb_bits[3][16];
127 /* TTBLK (Transform Type per Block) tables */
128 extern const uint8_t ff_vc1_ttblk_codes[3][8];
129 extern const uint8_t ff_vc1_ttblk_bits[3][8];
131 /* SUBBLKPAT tables, p93-94, reordered */
132 extern const uint8_t ff_vc1_subblkpat_codes[3][15];
133 extern const uint8_t ff_vc1_subblkpat_bits[3][15];
135 /* MV differential tables, p265 */
136 extern const uint16_t ff_vc1_mv_diff_codes[4][73];
137 extern const uint8_t ff_vc1_mv_diff_bits[4][73];
139 /* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
141 /* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
142 extern const int8_t ff_vc1_normal_zz[64];
143 extern const int8_t ff_vc1_horizontal_zz [64];
144 extern const int8_t ff_vc1_vertical_zz [64];
145 extern const int8_t ff_vc1_simple_progressive_8x8_zz [64];
146 extern const int8_t ff_vc1_simple_progressive_8x4_zz [32];
147 extern const int8_t ff_vc1_simple_progressive_4x8_zz [32];
148 extern const int8_t ff_vc1_simple_progressive_4x4_zz [16];
149 extern const int8_t ff_vc1_adv_progressive_8x4_zz [32];
150 extern const int8_t ff_vc1_adv_progressive_4x8_zz [32];
151 extern const int8_t ff_vc1_adv_interlaced_8x8_zz [64];
152 extern const int8_t ff_vc1_adv_interlaced_8x4_zz [32];
153 extern const int8_t ff_vc1_adv_interlaced_4x8_zz [32];
154 extern const int8_t ff_vc1_adv_interlaced_4x4_zz [16];
156 /* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
157 extern const int32_t ff_vc1_dqscale[63];
159 #endif /* VC1DATA_H */