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