ffmpeg / libavcodec / vc1data.h @ 986a865f
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/*


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* VC1 and WMV3 decoder

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* copyright (c) 2006 Konstantin Shishkov

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* (c) 2005 anonymous, Alex Beregszaszi, Michael Niedermayer

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*

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* This file is part of FFmpeg.

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*

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* FFmpeg is free software; you can redistribute it and/or

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* modify it under the terms of the GNU Lesser General Public

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* License as published by the Free Software Foundation; either

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* version 2.1 of the License, or (at your option) any later version.

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*

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* FFmpeg is distributed in the hope that it will be useful,

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* but WITHOUT ANY WARRANTY; without even the implied warranty of

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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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* Lesser General Public License for more details.

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*

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* You should have received a copy of the GNU Lesser General Public

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* License along with FFmpeg; if not, write to the Free Software

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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 021101301 USA

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*/

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/**

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* @file vc1data.h

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* VC1 tables.

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*/

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#ifndef VC1DATA_H

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#define VC1DATA_H

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/** Table for conversion between TTBLK and TTMB */

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extern const int ttblk_to_tt[3][8]; 
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extern const int ttfrm_to_tt[4]; 
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/** MV P mode  the 5th element is only used for mode 1 */

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extern const uint8_t mv_pmode_table[2][5]; 
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extern const uint8_t mv_pmode_table2[2][4]; 
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extern const int fps_nr[5], fps_dr[2]; 
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extern const uint8_t pquant_table[3][32]; 
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/** @name VC1 VLC tables and defines

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* @todo TODO move this into the context

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*/

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//@{

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#define VC1_BFRACTION_VLC_BITS 7 
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extern VLC vc1_bfraction_vlc;

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#define VC1_IMODE_VLC_BITS 4 
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extern VLC vc1_imode_vlc;

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#define VC1_NORM2_VLC_BITS 3 
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extern VLC vc1_norm2_vlc;

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#define VC1_NORM6_VLC_BITS 9 
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extern VLC vc1_norm6_vlc;

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/* Could be optimized, one table only needs 8 bits */

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#define VC1_TTMB_VLC_BITS 9 //12 
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extern VLC vc1_ttmb_vlc[3]; 
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#define VC1_MV_DIFF_VLC_BITS 9 //15 
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extern VLC vc1_mv_diff_vlc[4]; 
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#define VC1_CBPCY_P_VLC_BITS 9 //14 
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extern VLC vc1_cbpcy_p_vlc[4]; 
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#define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6 
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extern VLC vc1_4mv_block_pattern_vlc[4]; 
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#define VC1_TTBLK_VLC_BITS 5 
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extern VLC vc1_ttblk_vlc[3]; 
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#define VC1_SUBBLKPAT_VLC_BITS 6 
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extern VLC vc1_subblkpat_vlc[3]; 
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extern VLC vc1_ac_coeff_table[8]; 
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//@}

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#if 0 //original bfraction from vc9data.h, not conforming to standard

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/* Denominator used for vc1_bfraction_lut */

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#define B_FRACTION_DEN 840

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/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */

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extern const int16_t vc1_bfraction_lut[23];

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#else

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/* Denominator used for vc1_bfraction_lut */

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#define B_FRACTION_DEN 256 
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/* precomputed scales for all bfractions and base=256 */

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extern const int16_t vc1_bfraction_lut[23]; 
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#endif

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extern const uint8_t vc1_bfraction_bits[23]; 
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extern const uint8_t vc1_bfraction_codes[23]; 
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//Same as H.264

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extern const AVRational vc1_pixel_aspect[16]; 
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/* BitPlane IMODE  such a small table... */

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extern const uint8_t vc1_imode_codes[7]; 
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extern const uint8_t vc1_imode_bits[7]; 
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/* Normal2 imode */

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extern const uint8_t vc1_norm2_codes[4]; 
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extern const uint8_t vc1_norm2_bits[4]; 
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extern const uint16_t vc1_norm6_codes[64]; 
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extern const uint8_t vc1_norm6_bits[64]; 
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/* Normal6 imode */

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extern const uint8_t vc1_norm6_spec[64][5]; 
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/* 4MV Block pattern VLC tables */

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extern const uint8_t vc1_4mv_block_pattern_codes[4][16]; 
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extern const uint8_t vc1_4mv_block_pattern_bits[4][16]; 
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extern const uint8_t wmv3_dc_scale_table[32]; 
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/* PPicture CBPCY VLC tables */

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extern const uint16_t vc1_cbpcy_p_codes[4][64]; 
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extern const uint8_t vc1_cbpcy_p_bits[4][64]; 
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/* MacroBlock Transform Type: 7.1.3.11, p89

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* 8x8:B

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* 8x4:B:btm 8x4:B:top 8x4:B:both,

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* 4x8:B:right 4x8:B:left 4x8:B:both

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* 4x4:B 8x8:MB

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* 8x4:MB:btm 8x4:MB:top 8x4,MB,both

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* 4x8,MB,right 4x8,MB,left

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* 4x4,MB */

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extern const uint16_t vc1_ttmb_codes[3][16]; 
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extern const uint8_t vc1_ttmb_bits[3][16]; 
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/* TTBLK (Transform Type per Block) tables */

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extern const uint8_t vc1_ttblk_codes[3][8]; 
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extern const uint8_t vc1_ttblk_bits[3][8]; 
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/* SUBBLKPAT tables, p9394, reordered */

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extern const uint8_t vc1_subblkpat_codes[3][15]; 
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extern const uint8_t vc1_subblkpat_bits[3][15]; 
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/* MV differential tables, p265 */

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extern const uint16_t vc1_mv_diff_codes[4][73]; 
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extern const uint8_t vc1_mv_diff_bits[4][73]; 
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/* DC differentials low+himo, p217 are the same as in msmpeg4data .h */

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/* Scantables/ZZ scan are at 11.9 (p262) and 8.1.1.12 (p10) */

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extern const int8_t vc1_normal_zz[64]; 
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extern const int8_t vc1_horizontal_zz [64]; 
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extern const int8_t vc1_vertical_zz [64]; 
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extern const int8_t vc1_simple_progressive_8x8_zz [64]; 
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extern const int8_t vc1_simple_progressive_8x4_zz [32]; 
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extern const int8_t vc1_simple_progressive_4x8_zz [32]; 
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extern const int8_t vc1_simple_progressive_4x4_zz [16]; 
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extern const int8_t vc1_adv_progressive_8x4_zz [32]; 
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extern const int8_t vc1_adv_progressive_4x8_zz [32]; 
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extern const int8_t vc1_adv_interlaced_8x8_zz [64]; 
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extern const int8_t vc1_adv_interlaced_8x4_zz [32]; 
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extern const int8_t vc1_adv_interlaced_4x8_zz [32]; 
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extern const int8_t vc1_adv_interlaced_4x4_zz [16]; 
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/* DQScale as specified in 8.1.3.9  almost identical to 0x40000/i */

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extern const int32_t vc1_dqscale[63]; 
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#endif /* VC1DATA_H */ 