Statistics
| Branch: | Revision:

ffmpeg / libavcodec / vc1data.h @ 2912e87a

History | View | Annotate | Download (4.98 KB)

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 Libav.
7
 *
8
 * Libav 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
 * Libav 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 Libav; 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[5], ff_vc1_fps_dr[2];
45
extern const uint8_t ff_vc1_pquant_table[3][32];
46

    
47
/** @name VC-1 VLC tables and defines
48
 *  @todo TODO move this into the context
49
 */
50
//@{
51
#define VC1_BFRACTION_VLC_BITS 7
52
extern VLC ff_vc1_bfraction_vlc;
53
#define VC1_IMODE_VLC_BITS 4
54
extern VLC ff_vc1_imode_vlc;
55
#define VC1_NORM2_VLC_BITS 3
56
extern VLC ff_vc1_norm2_vlc;
57
#define VC1_NORM6_VLC_BITS 9
58
extern VLC ff_vc1_norm6_vlc;
59
/* Could be optimized, one table only needs 8 bits */
60
#define VC1_TTMB_VLC_BITS 9 //12
61
extern VLC ff_vc1_ttmb_vlc[3];
62
#define VC1_MV_DIFF_VLC_BITS 9 //15
63
extern VLC ff_vc1_mv_diff_vlc[4];
64
#define VC1_CBPCY_P_VLC_BITS 9 //14
65
extern VLC ff_vc1_cbpcy_p_vlc[4];
66
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
67
extern VLC ff_vc1_4mv_block_pattern_vlc[4];
68
#define VC1_TTBLK_VLC_BITS 5
69
extern VLC ff_vc1_ttblk_vlc[3];
70
#define VC1_SUBBLKPAT_VLC_BITS 6
71
extern VLC ff_vc1_subblkpat_vlc[3];
72

    
73
extern VLC ff_vc1_ac_coeff_table[8];
74
//@}
75

    
76

    
77
#if 0 //original bfraction from vc9data.h, not conforming to standard
78
/* Denominator used for ff_vc1_bfraction_lut */
79
#define B_FRACTION_DEN  840
80

81
/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
82
extern const int16_t ff_vc1_bfraction_lut[23];
83
#else
84
/* Denominator used for ff_vc1_bfraction_lut */
85
#define B_FRACTION_DEN  256
86

    
87
/* pre-computed scales for all bfractions and base=256 */
88
extern const int16_t ff_vc1_bfraction_lut[23];
89
#endif
90

    
91
extern const uint8_t ff_vc1_bfraction_bits[23];
92
extern const uint8_t ff_vc1_bfraction_codes[23];
93

    
94
//Same as H.264
95
extern const AVRational ff_vc1_pixel_aspect[16];
96

    
97
/* BitPlane IMODE - such a small table... */
98
extern const uint8_t ff_vc1_imode_codes[7];
99
extern const uint8_t ff_vc1_imode_bits[7];
100

    
101
/* Normal-2 imode */
102
extern const uint8_t ff_vc1_norm2_codes[4];
103
extern const uint8_t ff_vc1_norm2_bits[4];
104
extern const uint16_t ff_vc1_norm6_codes[64];
105
extern const uint8_t ff_vc1_norm6_bits[64];
106
/* Normal-6 imode */
107
extern const uint8_t ff_vc1_norm6_spec[64][5];
108

    
109
/* 4MV Block pattern VLC tables */
110
extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
111
extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
112

    
113
extern const uint8_t wmv3_dc_scale_table[32];
114

    
115
/* P-Picture CBPCY VLC tables */
116
extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
117
extern const uint8_t ff_vc1_cbpcy_p_bits[4][64];
118

    
119
/* MacroBlock Transform Type: 7.1.3.11, p89
120
 * 8x8:B
121
 * 8x4:B:btm  8x4:B:top  8x4:B:both,
122
 * 4x8:B:right  4x8:B:left  4x8:B:both
123
 * 4x4:B  8x8:MB
124
 * 8x4:MB:btm  8x4:MB:top  8x4,MB,both
125
 * 4x8,MB,right  4x8,MB,left
126
 * 4x4,MB                               */
127
extern const uint16_t ff_vc1_ttmb_codes[3][16];
128

    
129
extern const uint8_t ff_vc1_ttmb_bits[3][16];
130

    
131
/* TTBLK (Transform Type per Block) tables */
132
extern const uint8_t ff_vc1_ttblk_codes[3][8];
133
extern const uint8_t ff_vc1_ttblk_bits[3][8];
134

    
135
/* SUBBLKPAT tables, p93-94, reordered */
136
extern const uint8_t ff_vc1_subblkpat_codes[3][15];
137
extern const uint8_t ff_vc1_subblkpat_bits[3][15];
138

    
139
/* MV differential tables, p265 */
140
extern const uint16_t ff_vc1_mv_diff_codes[4][73];
141
extern const uint8_t ff_vc1_mv_diff_bits[4][73];
142

    
143
/* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
144

    
145
/* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */
146
extern const int8_t ff_vc1_simple_progressive_4x4_zz [16];
147
extern const int8_t ff_vc1_adv_progressive_8x4_zz [32];
148
extern const int8_t ff_vc1_adv_progressive_4x8_zz [32];
149
extern const int8_t ff_vc1_adv_interlaced_8x8_zz [64];
150
extern const int8_t ff_vc1_adv_interlaced_8x4_zz [32];
151
extern const int8_t ff_vc1_adv_interlaced_4x8_zz [32];
152
extern const int8_t ff_vc1_adv_interlaced_4x4_zz [16];
153

    
154
/* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
155
extern const int32_t ff_vc1_dqscale[63];
156

    
157
#endif /* AVCODEC_VC1DATA_H */