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e5dcde620d
For all VLCs here, the number of bits of the VLC is write-only, because it is hardcoded at the call site. Therefore one can replace these VLC structures with the only thing that is actually used: The pointer to the VLCElem table. And in some cases one can even avoid this. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
292 lines
11 KiB
C
292 lines
11 KiB
C
/*
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* VC-1 and WMV3 decoder
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* copyright (c) 2011 Mashiat Sarker Shakkhar
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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 02110-1301 USA
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*/
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/**
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* @file
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* VC-1 tables.
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*/
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#include "vc1.h"
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#include "vc1data.h"
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#include "vlc.h"
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/** Table for conversion between TTBLK and TTMB */
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const int ff_vc1_ttblk_to_tt[3][8] = {
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{ TT_8X4, TT_4X8, TT_8X8, TT_4X4, TT_8X4_TOP, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT },
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{ TT_8X8, TT_4X8_RIGHT, TT_4X8_LEFT, TT_4X4, TT_8X4, TT_4X8, TT_8X4_BOTTOM, TT_8X4_TOP },
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{ TT_8X8, TT_4X8, TT_4X4, TT_8X4_BOTTOM, TT_4X8_RIGHT, TT_4X8_LEFT, TT_8X4, TT_8X4_TOP }
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};
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const int ff_vc1_ttfrm_to_tt[4] = { TT_8X8, TT_8X4, TT_4X8, TT_4X4 };
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/** MV P mode - the 5th element is only used for mode 1 */
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const uint8_t ff_vc1_mv_pmode_table[2][5] = {
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{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_MIXED_MV },
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{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_INTENSITY_COMP, MV_PMODE_1MV_HPEL_BILIN }
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};
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const uint8_t ff_vc1_mv_pmode_table2[2][4] = {
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{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV },
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{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN }
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};
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/* MBMODE table for interlaced frame P-picture */
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const uint8_t ff_vc1_mbmode_intfrp[2][15][4] = {
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{ /* 1: 4-MV, 0: non-4-MV */
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/* Type, FIELDTX, 1-MV Differential present, Residuals (CBP) present */
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/* Table 164 - Table 167 */
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{ MV_PMODE_INTFR_1MV , 0, 1, 1 },
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{ MV_PMODE_INTFR_1MV , 1, 1, 1 },
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{ MV_PMODE_INTFR_1MV , 0, 1, 0 },
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{ MV_PMODE_INTFR_1MV , 0, 0, 1 },
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{ MV_PMODE_INTFR_1MV , 1, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 0, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 1, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 1, 0, 0 },
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{ MV_PMODE_INTFR_INTRA , 0, 0, 0 }
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},
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{
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/* Table 160 - Table 163 */
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{ MV_PMODE_INTFR_1MV , 0, 1, 1 },
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{ MV_PMODE_INTFR_1MV , 1, 1, 1 },
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{ MV_PMODE_INTFR_1MV , 0, 1, 0 },
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{ MV_PMODE_INTFR_1MV , 0, 0, 1 },
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{ MV_PMODE_INTFR_1MV , 1, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 0, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 1, 0, 1 },
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{ MV_PMODE_INTFR_2MV_FIELD, 1, 0, 0 },
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{ MV_PMODE_INTFR_4MV , 0, 0, 1 },
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{ MV_PMODE_INTFR_4MV , 1, 0, 1 },
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{ MV_PMODE_INTFR_4MV , 0, 0, 0 },
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{ MV_PMODE_INTFR_4MV_FIELD, 0, 0, 1 },
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{ MV_PMODE_INTFR_4MV_FIELD, 1, 0, 1 },
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{ MV_PMODE_INTFR_4MV_FIELD, 1, 0, 0 },
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{ MV_PMODE_INTFR_INTRA , 0, 0, 0 }
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}
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};
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const int ff_vc1_fps_nr[7] = { 24, 25, 30, 50, 60, 48, 72 },
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ff_vc1_fps_dr[2] = { 1000, 1001 };
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const uint8_t ff_vc1_pquant_table[3][32] = {
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/* Implicit quantizer */
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 12,
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13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31 },
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/* Explicit quantizer, pquantizer uniform */
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 },
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/* Explicit quantizer, pquantizer non-uniform */
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{ 0, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
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14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31 }
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};
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/** @name VC-1 VLC tables
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* @todo TODO move this into the context
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*/
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//@{
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VLCElem ff_vc1_imode_vlc[1 << VC1_IMODE_VLC_BITS];
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VLCElem ff_vc1_norm2_vlc[1 << VC1_NORM2_VLC_BITS];
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VLCElem ff_vc1_norm6_vlc[556];
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/* Could be optimized, one table only needs 8 bits */
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const VLCElem *ff_vc1_ttmb_vlc[3];
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const VLCElem *ff_vc1_mv_diff_vlc[4];
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const VLCElem *ff_vc1_cbpcy_p_vlc[4];
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const VLCElem *ff_vc1_icbpcy_vlc[8];
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const VLCElem *ff_vc1_4mv_block_pattern_vlc[4];
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const VLCElem *ff_vc1_2mv_block_pattern_vlc[4];
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const VLCElem *ff_vc1_ttblk_vlc[3];
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const VLCElem *ff_vc1_subblkpat_vlc[3];
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const VLCElem *ff_vc1_intfr_4mv_mbmode_vlc[4];
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const VLCElem *ff_vc1_intfr_non4mv_mbmode_vlc[4];
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const VLCElem *ff_vc1_if_mmv_mbmode_vlc[8];
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const VLCElem *ff_vc1_if_1mv_mbmode_vlc[8];
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const VLCElem *ff_vc1_1ref_mvdata_vlc[4];
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const VLCElem *ff_vc1_2ref_mvdata_vlc[8];
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const VLCElem *ff_vc1_ac_coeff_table[8];
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//@}
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#if B_FRACTION_DEN == 840 // original bfraction from vc9data.h, not conforming to standard
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/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
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const int16_t ff_vc1_bfraction_lut[23] = {
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420 /*1/2*/, 280 /*1/3*/, 560 /*2/3*/, 210 /*1/4*/,
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630 /*3/4*/, 168 /*1/5*/, 336 /*2/5*/,
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504 /*3/5*/, 672 /*4/5*/, 140 /*1/6*/, 700 /*5/6*/,
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120 /*1/7*/, 240 /*2/7*/, 360 /*3/7*/, 480 /*4/7*/,
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600 /*5/7*/, 720 /*6/7*/, 105 /*1/8*/, 315 /*3/8*/,
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525 /*5/8*/, 735 /*7/8*/,
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-1 /*inv.*/, 0 /*BI fm*/
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};
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#else
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/* pre-computed scales for all bfractions and base=256 */
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const int16_t ff_vc1_bfraction_lut[23] = {
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128 /*1/2*/, 85 /*1/3*/, 170 /*2/3*/, 64 /*1/4*/,
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192 /*3/4*/, 51 /*1/5*/, 102 /*2/5*/,
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153 /*3/5*/, 204 /*4/5*/, 43 /*1/6*/, 215 /*5/6*/,
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37 /*1/7*/, 74 /*2/7*/, 111 /*3/7*/, 148 /*4/7*/,
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185 /*5/7*/, 222 /*6/7*/, 32 /*1/8*/, 96 /*3/8*/,
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160 /*5/8*/, 224 /*7/8*/,
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-1 /*inv.*/, 0 /*BI fm*/
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};
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#endif
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//Same as H.264
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const AVRational ff_vc1_pixel_aspect[16] = {
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{ 0, 1 },
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{ 1, 1 },
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{ 12, 11 },
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{ 10, 11 },
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{ 16, 11 },
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{ 40, 33 },
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{ 24, 11 },
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{ 20, 11 },
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{ 32, 11 },
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{ 80, 33 },
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{ 18, 11 },
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{ 15, 11 },
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{ 64, 33 },
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{ 160, 99 },
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{ 0, 1 },
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{ 0, 1 }
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};
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const uint8_t ff_wmv3_dc_scale_table[32] = {
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0, 2, 4, 8, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13,
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14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21
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};
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/* DC differentials low+hi-mo, p217 are the same as in msmpeg4data .h */
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/* Table 232 */
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const uint8_t ff_vc1_simple_progressive_4x4_zz [16] = {
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0, 8, 16, 1,
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9, 24, 17, 2,
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10, 18, 25, 3,
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11, 26, 19, 27
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};
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const uint8_t ff_vc1_adv_progressive_8x4_zz [32] = { /* Table 233 */
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0, 8, 1, 16, 2, 9, 10, 3,
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24, 17, 4, 11, 18, 12, 5, 19,
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25, 13, 20, 26, 27, 6, 21, 28,
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14, 22, 29, 7, 30, 15, 23, 31
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};
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const uint8_t ff_vc1_adv_progressive_4x8_zz [32] = { /* Table 234 */
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0, 1, 8, 2,
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9, 16, 17, 24,
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10, 32, 25, 18,
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40, 3, 33, 26,
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48, 11, 56, 41,
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34, 49, 57, 42,
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19, 50, 27, 58,
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35, 43, 51, 59
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};
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const uint8_t ff_vc1_adv_interlaced_8x8_zz [64] = { /* Table 235 */
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0, 8, 1, 16, 24, 9, 2, 32,
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40, 48, 56, 17, 10, 3, 25, 18,
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11, 4, 33, 41, 49, 57, 26, 34,
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42, 50, 58, 19, 12, 5, 27, 20,
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13, 6, 35, 28, 21, 14, 7, 15,
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22, 29, 36, 43, 51, 59, 60, 52,
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44, 37, 30, 23, 31, 38, 45, 53,
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61, 62, 54, 46, 39, 47, 55, 63
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};
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const uint8_t ff_vc1_adv_interlaced_8x4_zz [32] = { /* Table 236 */
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0, 8, 16, 24, 1, 9, 2, 17,
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25, 10, 3, 18, 26, 4, 11, 19,
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12, 5, 13, 20, 27, 6, 21, 28,
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14, 22, 29, 7, 30, 15, 23, 31
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};
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const uint8_t ff_vc1_adv_interlaced_4x8_zz [32] = { /* Table 237 */
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0, 1, 2, 8,
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16, 9, 24, 17,
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10, 3, 32, 40,
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48, 56, 25, 18,
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33, 26, 41, 34,
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49, 57, 11, 42,
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19, 50, 27, 58,
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35, 43, 51, 59
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};
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const uint8_t ff_vc1_adv_interlaced_4x4_zz [16] = { /* Table 238 */
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0, 8, 16, 24,
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1, 9, 17, 2,
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25, 10, 18, 3,
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26, 11, 19, 27
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};
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/* DQScale as specified in 8.1.3.9 - almost identical to 0x40000/i */
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const int32_t ff_vc1_dqscale[63] = {
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0x40000, 0x20000, 0x15555, 0x10000, 0xCCCD, 0xAAAB, 0x9249, 0x8000,
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0x71C7, 0x6666, 0x5D17, 0x5555, 0x4EC5, 0x4925, 0x4444, 0x4000,
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0x3C3C, 0x38E4, 0x35E5, 0x3333, 0x30C3, 0x2E8C, 0x2C86, 0x2AAB,
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0x28F6, 0x2762, 0x25ED, 0x2492, 0x234F, 0x2222, 0x2108, 0x2000,
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0x1F08, 0x1E1E, 0x1D42, 0x1C72, 0x1BAD, 0x1AF3, 0x1A42, 0x199A,
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0x18FA, 0x1862, 0x17D0, 0x1746, 0x16C1, 0x1643, 0x15CA, 0x1555,
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0x14E6, 0x147B, 0x1414, 0x13B1, 0x1352, 0x12F7, 0x129E, 0x1249,
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0x11F7, 0x11A8, 0x115B, 0x1111, 0x10C9, 0x1084, 0x1041
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};
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/* P Interlaced field picture MV predictor scaling values (Table 114) */
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const uint16_t ff_vc1_field_mvpred_scales[2][7][4] = {
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// Refdist:
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// 0 1 2 3 or greater
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{ // current field is first
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{ 128, 192, 213, 224 }, // SCALEOPP
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{ 512, 341, 307, 293 }, // SCALESAME1
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{ 219, 236, 242, 245 }, // SCALESAME2
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{ 32, 48, 53, 56 }, // SCALEZONE1_X
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{ 8, 12, 13, 14 }, // SCALEZONE1_Y
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{ 37, 20, 14, 11 }, // ZONE1OFFSET_X
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{ 10, 5, 4, 3 } // ZONE1OFFSET_Y
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},
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{ // current field is second
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{ 128, 64, 43, 32 }, // SCALEOPP
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{ 512, 1024, 1536, 2048 }, // SCALESAME1
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{ 219, 204, 200, 198 }, // SCALESAME2
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{ 32, 16, 11, 8 }, // SCALEZONE1_X
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{ 8, 4, 3, 2 }, // SCALEZONE1_Y
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{ 37, 52, 56, 58 }, // ZONE1OFFSET_X
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{ 10, 13, 14, 15 } // ZONE1OFFSET_Y
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}
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};
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/* B Interlaced field picture backward MV predictor scaling values for first field (Table 115) */
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const uint16_t ff_vc1_b_field_mvpred_scales[7][4] = {
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// BRFD:
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// 0 1 2 3 or greater
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{ 171, 205, 219, 228 }, // SCALESAME
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{ 384, 320, 299, 288 }, // SCALEOPP1
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{ 230, 239, 244, 246 }, // SCALEOPP2
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{ 43, 51, 55, 57 }, // SCALEZONE1_X
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{ 11, 13, 14, 14 }, // SCALEZONE1_Y
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{ 26, 17, 12, 10 }, // ZONE1OFFSET_X
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{ 7, 4, 3, 3 } // ZONE1OFFSET_Y
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};
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