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 */
36extern const int ff_vc1_ttblk_to_tt[3][8];
37
38extern const int ff_vc1_ttfrm_to_tt[4];
39
40/** MV P mode - the 5th element is only used for mode 1 */
41extern const uint8_t ff_vc1_mv_pmode_table[2][5];
42extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
43
44extern const int ff_vc1_fps_nr[5], ff_vc1_fps_dr[2];
45extern 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
52extern VLC ff_vc1_bfraction_vlc;
53#define VC1_IMODE_VLC_BITS 4
54extern VLC ff_vc1_imode_vlc;
55#define VC1_NORM2_VLC_BITS 3
56extern VLC ff_vc1_norm2_vlc;
57#define VC1_NORM6_VLC_BITS 9
58extern VLC ff_vc1_norm6_vlc;
59/* Could be optimized, one table only needs 8 bits */
60#define VC1_TTMB_VLC_BITS 9 //12
61extern VLC ff_vc1_ttmb_vlc[3];
62#define VC1_MV_DIFF_VLC_BITS 9 //15
63extern VLC ff_vc1_mv_diff_vlc[4];
64#define VC1_CBPCY_P_VLC_BITS 9 //14
65extern VLC ff_vc1_cbpcy_p_vlc[4];
66#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
67extern VLC ff_vc1_4mv_block_pattern_vlc[4];
68#define VC1_TTBLK_VLC_BITS 5
69extern VLC ff_vc1_ttblk_vlc[3];
70#define VC1_SUBBLKPAT_VLC_BITS 6
71extern VLC ff_vc1_subblkpat_vlc[3];
72
73extern 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 */
82extern 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 */
88extern const int16_t ff_vc1_bfraction_lut[23];
89#endif
90
91extern const uint8_t ff_vc1_bfraction_bits[23];
92extern const uint8_t ff_vc1_bfraction_codes[23];
93
94//Same as H.264
95extern const AVRational ff_vc1_pixel_aspect[16];
96
97/* BitPlane IMODE - such a small table... */
98extern const uint8_t ff_vc1_imode_codes[7];
99extern const uint8_t ff_vc1_imode_bits[7];
100
101/* Normal-2 imode */
102extern const uint8_t ff_vc1_norm2_codes[4];
103extern const uint8_t ff_vc1_norm2_bits[4];
104extern const uint16_t ff_vc1_norm6_codes[64];
105extern const uint8_t ff_vc1_norm6_bits[64];
106/* Normal-6 imode */
107extern const uint8_t ff_vc1_norm6_spec[64][5];
108
109/* 4MV Block pattern VLC tables */
110extern const uint8_t ff_vc1_4mv_block_pattern_codes[4][16];
111extern const uint8_t ff_vc1_4mv_block_pattern_bits[4][16];
112
113extern const uint8_t wmv3_dc_scale_table[32];
114
115/* P-Picture CBPCY VLC tables */
116extern const uint16_t ff_vc1_cbpcy_p_codes[4][64];
117extern 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                               */
127extern const uint16_t ff_vc1_ttmb_codes[3][16];
128
129extern const uint8_t ff_vc1_ttmb_bits[3][16];
130
131/* TTBLK (Transform Type per Block) tables */
132extern const uint8_t ff_vc1_ttblk_codes[3][8];
133extern const uint8_t ff_vc1_ttblk_bits[3][8];
134
135/* SUBBLKPAT tables, p93-94, reordered */
136extern const uint8_t ff_vc1_subblkpat_codes[3][15];
137extern const uint8_t ff_vc1_subblkpat_bits[3][15];
138
139/* MV differential tables, p265 */
140extern const uint16_t ff_vc1_mv_diff_codes[4][73];
141extern 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) */
146extern const int8_t ff_vc1_simple_progressive_4x4_zz [16];
147extern const int8_t ff_vc1_adv_progressive_8x4_zz [32];
148extern const int8_t ff_vc1_adv_progressive_4x8_zz [32];
149extern const int8_t ff_vc1_adv_interlaced_8x8_zz [64];
150extern const int8_t ff_vc1_adv_interlaced_8x4_zz [32];
151extern const int8_t ff_vc1_adv_interlaced_4x8_zz [32];
152extern 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 */
155extern const int32_t ff_vc1_dqscale[63];
156
157#endif /* AVCODEC_VC1DATA_H */
158