LCOV - code coverage report
Current view: top level - libavcodec - vc1.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 725 929 78.0 %
Date: 2017-12-15 18:13:28 Functions: 12 12 100.0 %

          Line data    Source code
       1             : /*
       2             :  * VC-1 and WMV3 decoder common code
       3             :  * Copyright (c) 2011 Mashiat Sarker Shakkhar
       4             :  * Copyright (c) 2006-2007 Konstantin Shishkov
       5             :  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
       6             :  *
       7             :  * This file is part of FFmpeg.
       8             :  *
       9             :  * FFmpeg is free software; you can redistribute it and/or
      10             :  * modify it under the terms of the GNU Lesser General Public
      11             :  * License as published by the Free Software Foundation; either
      12             :  * version 2.1 of the License, or (at your option) any later version.
      13             :  *
      14             :  * FFmpeg is distributed in the hope that it will be useful,
      15             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      17             :  * Lesser General Public License for more details.
      18             :  *
      19             :  * You should have received a copy of the GNU Lesser General Public
      20             :  * License along with FFmpeg; if not, write to the Free Software
      21             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      22             :  */
      23             : 
      24             : /**
      25             :  * @file
      26             :  * VC-1 and WMV3 decoder common code
      27             :  */
      28             : 
      29             : #include "libavutil/attributes.h"
      30             : #include "internal.h"
      31             : #include "avcodec.h"
      32             : #include "mpegvideo.h"
      33             : #include "vc1.h"
      34             : #include "vc1data.h"
      35             : #include "wmv2data.h"
      36             : #include "unary.h"
      37             : #include "simple_idct.h"
      38             : 
      39             : /***********************************************************************/
      40             : /**
      41             :  * @name VC-1 Bitplane decoding
      42             :  * @see 8.7, p56
      43             :  * @{
      44             :  */
      45             : 
      46             : /** Decode rows by checking if they are skipped
      47             :  * @param plane Buffer to store decoded bits
      48             :  * @param[in] width Width of this buffer
      49             :  * @param[in] height Height of this buffer
      50             :  * @param[in] stride of this buffer
      51             :  */
      52         192 : static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
      53             :                            GetBitContext *gb)
      54             : {
      55             :     int x, y;
      56             : 
      57         767 :     for (y = 0; y < height; y++) {
      58         575 :         if (!get_bits1(gb)) //rowskip
      59         277 :             memset(plane, 0, width);
      60             :         else
      61        7569 :             for (x = 0; x < width; x++)
      62        7271 :                 plane[x] = get_bits1(gb);
      63         575 :         plane += stride;
      64             :     }
      65         192 : }
      66             : 
      67             : /** Decode columns by checking if they are skipped
      68             :  * @param plane Buffer to store decoded bits
      69             :  * @param[in] width Width of this buffer
      70             :  * @param[in] height Height of this buffer
      71             :  * @param[in] stride of this buffer
      72             :  * @todo FIXME: Optimize
      73             :  */
      74         117 : static void decode_colskip(uint8_t* plane, int width, int height, int stride,
      75             :                            GetBitContext *gb)
      76             : {
      77             :     int x, y;
      78             : 
      79         853 :     for (x = 0; x < width; x++) {
      80         736 :         if (!get_bits1(gb)) //colskip
      81        9031 :             for (y = 0; y < height; y++)
      82        8780 :                 plane[y*stride] = 0;
      83             :         else
      84        6765 :             for (y = 0; y < height; y++)
      85        6280 :                 plane[y*stride] = get_bits1(gb);
      86         736 :         plane ++;
      87             :     }
      88         117 : }
      89             : 
      90             : /** Decode a bitplane's bits
      91             :  * @param data bitplane where to store the decode bits
      92             :  * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
      93             :  * @param v VC-1 context for bit reading and logging
      94             :  * @return Status
      95             :  * @todo FIXME: Optimize
      96             :  */
      97        1028 : static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
      98             : {
      99        1028 :     GetBitContext *gb = &v->s.gb;
     100             : 
     101             :     int imode, x, y, code, offset;
     102        1028 :     uint8_t invert, *planep = data;
     103             :     int width, height, stride;
     104             : 
     105        1028 :     width  = v->s.mb_width;
     106        1028 :     height = v->s.mb_height >> v->field_mode;
     107        1028 :     stride = v->s.mb_stride;
     108        1028 :     invert = get_bits1(gb);
     109        1028 :     imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
     110             : 
     111        1028 :     *raw_flag = 0;
     112        1028 :     switch (imode) {
     113         632 :     case IMODE_RAW:
     114             :         //Data is actually read in the MB layer (same for all tests == "raw")
     115         632 :         *raw_flag = 1; //invert ignored
     116         632 :         return invert;
     117         154 :     case IMODE_DIFF2:
     118             :     case IMODE_NORM2:
     119         154 :         if ((height * width) & 1) {
     120         112 :             *planep++ = get_bits1(gb);
     121         112 :             y = offset = 1;
     122         112 :             if (offset == width) {
     123           0 :                 offset = 0;
     124           0 :                 planep += stride - width;
     125             :             }
     126             :         }
     127             :         else
     128          42 :             y = offset = 0;
     129             :         // decode bitplane as one long line
     130       34991 :         for (; y < height * width; y += 2) {
     131       34837 :             code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
     132       34837 :             *planep++ = code & 1;
     133       34837 :             offset++;
     134       34837 :             if (offset == width) {
     135         376 :                 offset  = 0;
     136         376 :                 planep += stride - width;
     137             :             }
     138       34837 :             *planep++ = code >> 1;
     139       34837 :             offset++;
     140       34837 :             if (offset == width) {
     141        1264 :                 offset  = 0;
     142        1264 :                 planep += stride - width;
     143             :             }
     144             :         }
     145         154 :         break;
     146         186 :     case IMODE_DIFF6:
     147             :     case IMODE_NORM6:
     148         186 :         if (!(height % 3) && (width % 3)) { // use 2x3 decoding
     149          92 :             for (y = 0; y < height; y += 3) {
     150         750 :                 for (x = width & 1; x < width; x += 2) {
     151         675 :                     code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
     152         675 :                     if (code < 0) {
     153           0 :                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
     154           0 :                         return -1;
     155             :                     }
     156         675 :                     planep[x + 0]              = (code >> 0) & 1;
     157         675 :                     planep[x + 1]              = (code >> 1) & 1;
     158         675 :                     planep[x + 0 + stride]     = (code >> 2) & 1;
     159         675 :                     planep[x + 1 + stride]     = (code >> 3) & 1;
     160         675 :                     planep[x + 0 + stride * 2] = (code >> 4) & 1;
     161         675 :                     planep[x + 1 + stride * 2] = (code >> 5) & 1;
     162             :                 }
     163          75 :                 planep += stride * 3;
     164             :             }
     165          34 :             if (width & 1)
     166           5 :                 decode_colskip(data, 1, height, stride, &v->s.gb);
     167             :         } else { // 3x2
     168         169 :             planep += (height & 1) * stride;
     169        1161 :             for (y = height & 1; y < height; y += 2) {
     170       17352 :                 for (x = width % 3; x < width; x += 3) {
     171       16360 :                     code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
     172       16360 :                     if (code < 0) {
     173           0 :                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
     174           0 :                         return -1;
     175             :                     }
     176       16360 :                     planep[x + 0]          = (code >> 0) & 1;
     177       16360 :                     planep[x + 1]          = (code >> 1) & 1;
     178       16360 :                     planep[x + 2]          = (code >> 2) & 1;
     179       16360 :                     planep[x + 0 + stride] = (code >> 3) & 1;
     180       16360 :                     planep[x + 1 + stride] = (code >> 4) & 1;
     181       16360 :                     planep[x + 2 + stride] = (code >> 5) & 1;
     182             :                 }
     183         992 :                 planep += stride * 2;
     184             :             }
     185         169 :             x = width % 3;
     186         169 :             if (x)
     187          89 :                 decode_colskip(data,             x, height, stride, &v->s.gb);
     188         169 :             if (height & 1)
     189         159 :                 decode_rowskip(data + x, width - x,      1, stride, &v->s.gb);
     190             :         }
     191         186 :         break;
     192          33 :     case IMODE_ROWSKIP:
     193          33 :         decode_rowskip(data, width, height, stride, &v->s.gb);
     194          33 :         break;
     195          23 :     case IMODE_COLSKIP:
     196          23 :         decode_colskip(data, width, height, stride, &v->s.gb);
     197          23 :         break;
     198           0 :     default:
     199           0 :         break;
     200             :     }
     201             : 
     202             :     /* Applying diff operator */
     203         501 :     if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
     204         105 :         planep = data;
     205         105 :         planep[0] ^= invert;
     206        3008 :         for (x = 1; x < width; x++)
     207        2903 :             planep[x] ^= planep[x-1];
     208        1391 :         for (y = 1; y < height; y++) {
     209        1286 :             planep += stride;
     210        1286 :             planep[0] ^= planep[-stride];
     211       73114 :             for (x = 1; x < width; x++) {
     212       71828 :                 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
     213       50814 :                 else                                 planep[x] ^= planep[x-1];
     214             :             }
     215             :         }
     216         291 :     } else if (invert) {
     217          41 :         planep = data;
     218       13395 :         for (x = 0; x < stride * height; x++)
     219       13354 :             planep[x] = !planep[x]; //FIXME stride
     220             :     }
     221         396 :     return (imode << 1) + invert;
     222             : }
     223             : 
     224             : /** @} */ //Bitplane group
     225             : 
     226             : /***********************************************************************/
     227             : /** VOP Dquant decoding
     228             :  * @param v VC-1 Context
     229             :  */
     230         146 : static int vop_dquant_decoding(VC1Context *v)
     231             : {
     232         146 :     GetBitContext *gb = &v->s.gb;
     233             :     int pqdiff;
     234             : 
     235             :     //variable size
     236         146 :     if (v->dquant != 2) {
     237         146 :         v->dquantfrm = get_bits1(gb);
     238         146 :         if (!v->dquantfrm)
     239          65 :             return 0;
     240             : 
     241          81 :         v->dqprofile = get_bits(gb, 2);
     242          81 :         switch (v->dqprofile) {
     243          62 :         case DQPROFILE_SINGLE_EDGE:
     244             :         case DQPROFILE_DOUBLE_EDGES:
     245          62 :             v->dqsbedge = get_bits(gb, 2);
     246          62 :             break;
     247          19 :         case DQPROFILE_ALL_MBS:
     248          19 :             v->dqbilevel = get_bits1(gb);
     249          19 :             if (!v->dqbilevel) {
     250           1 :                 v->halfpq = 0;
     251           1 :                 return 0;
     252             :             }
     253             :         default:
     254          18 :             break; //Forbidden ?
     255             :         }
     256           0 :     }
     257             : 
     258          80 :     pqdiff = get_bits(gb, 3);
     259          80 :     if (pqdiff == 7)
     260          18 :         v->altpq = get_bits(gb, 5);
     261             :     else
     262          62 :         v->altpq = v->pq + pqdiff + 1;
     263             : 
     264          80 :     return 0;
     265             : }
     266             : 
     267             : static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
     268             : 
     269             : /**
     270             :  * Decode Simple/Main Profiles sequence header
     271             :  * @see Figure 7-8, p16-17
     272             :  * @param avctx Codec context
     273             :  * @param gb GetBit context initialized from Codec context extra_data
     274             :  * @return Status
     275             :  */
     276          27 : int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
     277             : {
     278          27 :     av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits_long(gb, 32));
     279          27 :     v->profile = get_bits(gb, 2);
     280          27 :     if (v->profile == PROFILE_COMPLEX) {
     281           0 :         av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
     282             :     }
     283             : 
     284          27 :     if (v->profile == PROFILE_ADVANCED) {
     285          24 :         v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
     286          24 :         v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
     287          24 :         return decode_sequence_header_adv(v, gb);
     288             :     } else {
     289           3 :         v->chromaformat = 1;
     290           3 :         v->zz_8x4 = ff_wmv2_scantableA;
     291           3 :         v->zz_4x8 = ff_wmv2_scantableB;
     292           3 :         v->res_y411   = get_bits1(gb);
     293           3 :         v->res_sprite = get_bits1(gb);
     294           3 :         if (v->res_y411) {
     295           0 :             av_log(avctx, AV_LOG_ERROR,
     296             :                    "Old interlaced mode is not supported\n");
     297           0 :             return -1;
     298             :         }
     299             :     }
     300             : 
     301             :     // (fps-2)/4 (->30)
     302           3 :     v->frmrtq_postproc = get_bits(gb, 3); //common
     303             :     // (bitrate-32kbps)/64kbps
     304           3 :     v->bitrtq_postproc = get_bits(gb, 5); //common
     305           3 :     v->s.loop_filter   = get_bits1(gb); //common
     306           3 :     if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
     307           0 :         av_log(avctx, AV_LOG_ERROR,
     308             :                "LOOPFILTER shall not be enabled in Simple Profile\n");
     309             :     }
     310           3 :     if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
     311           0 :         v->s.loop_filter = 0;
     312             : 
     313           3 :     v->res_x8          = get_bits1(gb); //reserved
     314           3 :     v->multires        = get_bits1(gb);
     315           3 :     v->res_fasttx      = get_bits1(gb);
     316           3 :     if (!v->res_fasttx) {
     317           0 :         v->vc1dsp.vc1_inv_trans_8x8    = ff_simple_idct_8;
     318           0 :         v->vc1dsp.vc1_inv_trans_8x4    = ff_simple_idct84_add;
     319           0 :         v->vc1dsp.vc1_inv_trans_4x8    = ff_simple_idct48_add;
     320           0 :         v->vc1dsp.vc1_inv_trans_4x4    = ff_simple_idct44_add;
     321           0 :         v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;
     322           0 :         v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
     323           0 :         v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
     324           0 :         v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
     325             :     }
     326             : 
     327           3 :     v->fastuvmc        = get_bits1(gb); //common
     328           3 :     if (!v->profile && !v->fastuvmc) {
     329           0 :         av_log(avctx, AV_LOG_ERROR,
     330             :                "FASTUVMC unavailable in Simple Profile\n");
     331           0 :         return -1;
     332             :     }
     333           3 :     v->extended_mv     = get_bits1(gb); //common
     334           3 :     if (!v->profile && v->extended_mv) {
     335           0 :         av_log(avctx, AV_LOG_ERROR,
     336             :                "Extended MVs unavailable in Simple Profile\n");
     337           0 :         return -1;
     338             :     }
     339           3 :     v->dquant          = get_bits(gb, 2); //common
     340           3 :     v->vstransform     = get_bits1(gb); //common
     341             : 
     342           3 :     v->res_transtab    = get_bits1(gb);
     343           3 :     if (v->res_transtab) {
     344           0 :         av_log(avctx, AV_LOG_ERROR,
     345             :                "1 for reserved RES_TRANSTAB is forbidden\n");
     346           0 :         return -1;
     347             :     }
     348             : 
     349           3 :     v->overlap         = get_bits1(gb); //common
     350             : 
     351           3 :     v->resync_marker   = get_bits1(gb);
     352           3 :     v->rangered        = get_bits1(gb);
     353           3 :     if (v->rangered && v->profile == PROFILE_SIMPLE) {
     354           0 :         av_log(avctx, AV_LOG_INFO,
     355             :                "RANGERED should be set to 0 in Simple Profile\n");
     356             :     }
     357             : 
     358           3 :     v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
     359           3 :     v->quantizer_mode = get_bits(gb, 2); //common
     360             : 
     361           3 :     v->finterpflag = get_bits1(gb); //common
     362             : 
     363           3 :     if (v->res_sprite) {
     364           0 :         int w = get_bits(gb, 11);
     365           0 :         int h = get_bits(gb, 11);
     366           0 :         int ret = ff_set_dimensions(v->s.avctx, w, h);
     367           0 :         if (ret < 0) {
     368           0 :             av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
     369           0 :             return ret;
     370             :         }
     371           0 :         skip_bits(gb, 5); //frame rate
     372           0 :         v->res_x8 = get_bits1(gb);
     373           0 :         if (get_bits1(gb)) { // something to do with DC VLC selection
     374           0 :             av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
     375           0 :             return -1;
     376             :         }
     377           0 :         skip_bits(gb, 3); //slice code
     378           0 :         v->res_rtm_flag = 0;
     379             :     } else {
     380           3 :         v->res_rtm_flag = get_bits1(gb); //reserved
     381             :     }
     382           3 :     if (!v->res_rtm_flag) {
     383           0 :         av_log(avctx, AV_LOG_ERROR,
     384             :                "Old WMV3 version detected, some frames may be decoded incorrectly\n");
     385             :         //return -1;
     386             :     }
     387             :     //TODO: figure out what they mean (always 0x402F)
     388           3 :     if (!v->res_fasttx)
     389           0 :         skip_bits(gb, 16);
     390           3 :     av_log(avctx, AV_LOG_DEBUG,
     391             :            "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
     392             :            "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
     393             :            "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
     394             :            "DQuant=%i, Quantizer mode=%i, Max B-frames=%i\n",
     395             :            v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
     396             :            v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
     397             :            v->rangered, v->vstransform, v->overlap, v->resync_marker,
     398             :            v->dquant, v->quantizer_mode, avctx->max_b_frames);
     399           3 :     return 0;
     400             : }
     401             : 
     402          24 : static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
     403             : {
     404          24 :     v->res_rtm_flag = 1;
     405          24 :     v->level = get_bits(gb, 3);
     406          24 :     if (v->level >= 5) {
     407           0 :         av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
     408             :     }
     409          24 :     v->chromaformat = get_bits(gb, 2);
     410          24 :     if (v->chromaformat != 1) {
     411           0 :         av_log(v->s.avctx, AV_LOG_ERROR,
     412             :                "Only 4:2:0 chroma format supported\n");
     413           0 :         return -1;
     414             :     }
     415             : 
     416             :     // (fps-2)/4 (->30)
     417          24 :     v->frmrtq_postproc       = get_bits(gb, 3); //common
     418             :     // (bitrate-32kbps)/64kbps
     419          24 :     v->bitrtq_postproc       = get_bits(gb, 5); //common
     420          24 :     v->postprocflag          = get_bits1(gb);   //common
     421             : 
     422          24 :     v->max_coded_width       = (get_bits(gb, 12) + 1) << 1;
     423          24 :     v->max_coded_height      = (get_bits(gb, 12) + 1) << 1;
     424          24 :     v->broadcast             = get_bits1(gb);
     425          24 :     v->interlace             = get_bits1(gb);
     426          24 :     v->tfcntrflag            = get_bits1(gb);
     427          24 :     v->finterpflag           = get_bits1(gb);
     428          24 :     skip_bits1(gb); // reserved
     429             : 
     430          24 :     av_log(v->s.avctx, AV_LOG_DEBUG,
     431             :            "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
     432             :            "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
     433             :            "TFCTRflag=%i, FINTERPflag=%i\n",
     434             :            v->level, v->frmrtq_postproc, v->bitrtq_postproc,
     435             :            v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
     436             :            v->tfcntrflag, v->finterpflag);
     437             : 
     438          24 :     v->psf = get_bits1(gb);
     439          24 :     if (v->psf) { //PsF, 6.1.13
     440           0 :         av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
     441           0 :         return -1;
     442             :     }
     443          24 :     v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
     444          24 :     if (get_bits1(gb)) { //Display Info - decoding is not affected by it
     445          24 :         int w, h, ar = 0;
     446          24 :         av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
     447          24 :         w = get_bits(gb, 14) + 1;
     448          24 :         h = get_bits(gb, 14) + 1;
     449          24 :         av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
     450          24 :         if (get_bits1(gb))
     451           9 :             ar = get_bits(gb, 4);
     452          24 :         if (ar && ar < 14) {
     453           3 :             v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
     454          21 :         } else if (ar == 15) {
     455           6 :             w = get_bits(gb, 8) + 1;
     456           6 :             h = get_bits(gb, 8) + 1;
     457           6 :             v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
     458             :         } else {
     459          45 :             av_reduce(&v->s.avctx->sample_aspect_ratio.num,
     460          15 :                       &v->s.avctx->sample_aspect_ratio.den,
     461          15 :                       v->s.avctx->height * w,
     462          15 :                       v->s.avctx->width * h,
     463             :                       1 << 30);
     464             :         }
     465          24 :         ff_set_sar(v->s.avctx, v->s.avctx->sample_aspect_ratio);
     466          48 :         av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
     467          24 :                v->s.avctx->sample_aspect_ratio.num,
     468          24 :                v->s.avctx->sample_aspect_ratio.den);
     469             : 
     470          24 :         if (get_bits1(gb)) { //framerate stuff
     471           9 :             if (get_bits1(gb)) {
     472           0 :                 v->s.avctx->framerate.den = 32;
     473           0 :                 v->s.avctx->framerate.num = get_bits(gb, 16) + 1;
     474             :             } else {
     475             :                 int nr, dr;
     476           9 :                 nr = get_bits(gb, 8);
     477           9 :                 dr = get_bits(gb, 4);
     478           9 :                 if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {
     479           9 :                     v->s.avctx->framerate.den = ff_vc1_fps_dr[dr - 1];
     480           9 :                     v->s.avctx->framerate.num = ff_vc1_fps_nr[nr - 1] * 1000;
     481             :                 }
     482             :             }
     483           9 :             if (v->broadcast) { // Pulldown may be present
     484           9 :                 v->s.avctx->ticks_per_frame = 2;
     485             :             }
     486             :         }
     487             : 
     488          24 :         if (get_bits1(gb)) {
     489           0 :             v->color_prim    = get_bits(gb, 8);
     490           0 :             v->transfer_char = get_bits(gb, 8);
     491           0 :             v->matrix_coef   = get_bits(gb, 8);
     492             :         }
     493             :     }
     494             : 
     495          24 :     v->hrd_param_flag = get_bits1(gb);
     496          24 :     if (v->hrd_param_flag) {
     497             :         int i;
     498          18 :         v->hrd_num_leaky_buckets = get_bits(gb, 5);
     499          18 :         skip_bits(gb, 4); //bitrate exponent
     500          18 :         skip_bits(gb, 4); //buffer size exponent
     501         276 :         for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
     502         258 :             skip_bits(gb, 16); //hrd_rate[n]
     503         258 :             skip_bits(gb, 16); //hrd_buffer[n]
     504             :         }
     505             :     }
     506          24 :     return 0;
     507             : }
     508             : 
     509          52 : int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
     510             : {
     511             :     int i;
     512             :     int w,h;
     513             :     int ret;
     514             : 
     515          52 :     av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
     516          52 :     v->broken_link    = get_bits1(gb);
     517          52 :     v->closed_entry   = get_bits1(gb);
     518          52 :     v->panscanflag    = get_bits1(gb);
     519          52 :     v->refdist_flag   = get_bits1(gb);
     520          52 :     v->s.loop_filter  = get_bits1(gb);
     521          52 :     if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
     522           0 :         v->s.loop_filter = 0;
     523          52 :     v->fastuvmc       = get_bits1(gb);
     524          52 :     v->extended_mv    = get_bits1(gb);
     525          52 :     v->dquant         = get_bits(gb, 2);
     526          52 :     v->vstransform    = get_bits1(gb);
     527          52 :     v->overlap        = get_bits1(gb);
     528          52 :     v->quantizer_mode = get_bits(gb, 2);
     529             : 
     530          52 :     if (v->hrd_param_flag) {
     531         728 :         for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
     532         684 :             skip_bits(gb, 8); //hrd_full[n]
     533             :         }
     534             :     }
     535             : 
     536          52 :     if(get_bits1(gb)){
     537          40 :         w = (get_bits(gb, 12)+1)<<1;
     538          40 :         h = (get_bits(gb, 12)+1)<<1;
     539             :     } else {
     540          12 :         w = v->max_coded_width;
     541          12 :         h = v->max_coded_height;
     542             :     }
     543          52 :     if ((ret = ff_set_dimensions(avctx, w, h)) < 0) {
     544           0 :         av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
     545           0 :         return ret;
     546             :     }
     547             : 
     548          52 :     if (v->extended_mv)
     549          12 :         v->extended_dmv = get_bits1(gb);
     550          52 :     if ((v->range_mapy_flag = get_bits1(gb))) {
     551           0 :         av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
     552           0 :         v->range_mapy = get_bits(gb, 3);
     553             :     }
     554          52 :     if ((v->range_mapuv_flag = get_bits1(gb))) {
     555           0 :         av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
     556           0 :         v->range_mapuv = get_bits(gb, 3);
     557             :     }
     558             : 
     559         156 :     av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
     560             :            "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
     561             :            "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
     562             :            "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
     563         104 :            v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
     564             :            v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
     565             : 
     566          52 :     return 0;
     567             : }
     568             : 
     569             : /* fill lookup tables for intensity compensation */
     570             : #define INIT_LUT(lumscale, lumshift, luty, lutuv, chain) do {                 \
     571             :         int scale, shift, i;                                                  \
     572             :         if (!lumscale) {                                                      \
     573             :             scale = -64;                                                      \
     574             :             shift = (255 - lumshift * 2) * 64;                                \
     575             :             if (lumshift > 31)                                                \
     576             :                 shift += 128 << 6;                                            \
     577             :         } else {                                                              \
     578             :             scale = lumscale + 32;                                            \
     579             :             if (lumshift > 31)                                                \
     580             :                 shift = (lumshift - 64) * 64;                                 \
     581             :             else                                                              \
     582             :                 shift = lumshift << 6;                                        \
     583             :         }                                                                     \
     584             :         for (i = 0; i < 256; i++) {                                           \
     585             :             int iy = chain ? luty[i]  : i;                                    \
     586             :             int iu = chain ? lutuv[i] : i;                                    \
     587             :             luty[i]  = av_clip_uint8((scale * iy + shift + 32) >> 6);         \
     588             :             lutuv[i] = av_clip_uint8((scale * (iu - 128) + 128*64 + 32) >> 6);\
     589             :         }                                                                     \
     590             :     } while(0)
     591             : 
     592         360 : static void rotate_luts(VC1Context *v)
     593             : {
     594             : #define ROTATE(DEF, L, N, C, A) do {                          \
     595             :         if (v->s.pict_type == AV_PICTURE_TYPE_BI || v->s.pict_type == AV_PICTURE_TYPE_B) { \
     596             :             C = A;                                            \
     597             :         } else {                                              \
     598             :             DEF;                                              \
     599             :             memcpy(&tmp, L   , sizeof(tmp));                  \
     600             :             memcpy(L   , N   , sizeof(tmp));                  \
     601             :             memcpy(N   , &tmp, sizeof(tmp));                  \
     602             :             C = N;                                            \
     603             :         }                                                     \
     604             :     } while(0)
     605             : 
     606         360 :     ROTATE(int tmp,             &v->last_use_ic, &v->next_use_ic, v->curr_use_ic, &v->aux_use_ic);
     607         360 :     ROTATE(uint8_t tmp[2][256], v->last_luty,   v->next_luty,   v->curr_luty,   v->aux_luty);
     608         360 :     ROTATE(uint8_t tmp[2][256], v->last_lutuv,  v->next_lutuv,  v->curr_lutuv,  v->aux_lutuv);
     609             : 
     610         360 :     INIT_LUT(32, 0, v->curr_luty[0], v->curr_lutuv[0], 0);
     611         360 :     INIT_LUT(32, 0, v->curr_luty[1], v->curr_lutuv[1], 0);
     612         360 :     *v->curr_use_ic = 0;
     613         360 : }
     614             : 
     615         156 : static int read_bfraction(VC1Context *v, GetBitContext* gb) {
     616         156 :     int bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
     617             : 
     618         156 :     if (bfraction_lut_index == 21 || bfraction_lut_index < 0) {
     619           0 :         av_log(v->s.avctx, AV_LOG_ERROR, "bfraction invalid\n");
     620           0 :         return AVERROR_INVALIDDATA;
     621             :     }
     622         156 :     v->bfraction_lut_index = bfraction_lut_index;
     623         156 :     v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];
     624         156 :     return 0;
     625             : }
     626             : 
     627         208 : int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
     628             : {
     629             :     int pqindex, lowquant, status;
     630             : 
     631         208 :     v->field_mode = 0;
     632         208 :     v->fcm = 0;
     633         208 :     if (v->finterpflag)
     634           0 :         v->interpfrm = get_bits1(gb);
     635         208 :     if (!v->s.avctx->codec)
     636           0 :         return -1;
     637         208 :     if (v->s.avctx->codec_id == AV_CODEC_ID_MSS2)
     638          79 :         v->respic   =
     639          79 :         v->rangered =
     640          79 :         v->multires = get_bits(gb, 2) == 1;
     641             :     else
     642         129 :         skip_bits(gb, 2); //framecnt unused
     643         208 :     v->rangeredfrm = 0;
     644         208 :     if (v->rangered)
     645          53 :         v->rangeredfrm = get_bits1(gb);
     646         208 :     if (get_bits1(gb)) {
     647         127 :         v->s.pict_type = AV_PICTURE_TYPE_P;
     648             :     } else {
     649          81 :         if (v->s.avctx->max_b_frames && !get_bits1(gb)) {
     650           0 :             v->s.pict_type = AV_PICTURE_TYPE_B;
     651             :         } else
     652          81 :             v->s.pict_type = AV_PICTURE_TYPE_I;
     653             :     }
     654             : 
     655         208 :     v->bi_type = 0;
     656         208 :     if (v->s.pict_type == AV_PICTURE_TYPE_B) {
     657           0 :         if (read_bfraction(v, gb) < 0)
     658           0 :             return AVERROR_INVALIDDATA;
     659           0 :         if (v->bfraction == 0) {
     660           0 :             v->s.pict_type = AV_PICTURE_TYPE_BI;
     661             :         }
     662             :     }
     663         208 :     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
     664          81 :         skip_bits(gb, 7); // skip buffer fullness
     665             : 
     666         208 :     if (v->parse_only)
     667           0 :         return 0;
     668             : 
     669             :     /* calculate RND */
     670         208 :     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
     671          81 :         v->rnd = 1;
     672         208 :     if (v->s.pict_type == AV_PICTURE_TYPE_P)
     673         127 :         v->rnd ^= 1;
     674             : 
     675             :     /* Quantizer stuff */
     676         208 :     pqindex = get_bits(gb, 5);
     677         208 :     if (!pqindex)
     678           0 :         return -1;
     679         208 :     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
     680         208 :         v->pq = ff_vc1_pquant_table[0][pqindex];
     681             :     else
     682           0 :         v->pq = ff_vc1_pquant_table[1][pqindex];
     683         208 :     v->pqindex = pqindex;
     684         208 :     if (pqindex < 9)
     685         136 :         v->halfpq = get_bits1(gb);
     686             :     else
     687          72 :         v->halfpq = 0;
     688         208 :     switch (v->quantizer_mode) {
     689         208 :     case QUANT_FRAME_IMPLICIT:
     690         208 :         v->pquantizer = pqindex < 9;
     691         208 :         break;
     692           0 :     case QUANT_NON_UNIFORM:
     693           0 :         v->pquantizer = 0;
     694           0 :         break;
     695           0 :     case QUANT_FRAME_EXPLICIT:
     696           0 :         v->pquantizer = get_bits1(gb);
     697           0 :         break;
     698           0 :     default:
     699           0 :         v->pquantizer = 1;
     700           0 :         break;
     701             :     }
     702         208 :     v->dquantfrm = 0;
     703         208 :     if (v->extended_mv == 1)
     704           0 :         v->mvrange = get_unary(gb, 0, 3);
     705         208 :     v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
     706         208 :     v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
     707         208 :     v->range_x = 1 << (v->k_x - 1);
     708         208 :     v->range_y = 1 << (v->k_y - 1);
     709         208 :     if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
     710          53 :         v->respic = get_bits(gb, 2);
     711             : 
     712         208 :     if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
     713           0 :         v->x8_type = get_bits1(gb);
     714             :     } else
     715         208 :         v->x8_type = 0;
     716             :     ff_dlog(v->s.avctx, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
     717             :             (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
     718             :             pqindex, v->pq, v->halfpq, v->rangeredfrm);
     719             : 
     720         208 :     if (v->first_pic_header_flag)
     721         129 :         rotate_luts(v);
     722             : 
     723         208 :     switch (v->s.pict_type) {
     724         127 :     case AV_PICTURE_TYPE_P:
     725         127 :         v->tt_index = (v->pq > 4) + (v->pq > 12);
     726             : 
     727         127 :         lowquant = (v->pq > 12) ? 0 : 1;
     728         127 :         v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
     729         127 :         if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
     730          21 :             v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
     731          21 :             v->lumscale = get_bits(gb, 6);
     732          21 :             v->lumshift = get_bits(gb, 6);
     733          21 :             v->last_use_ic = 1;
     734             :             /* fill lookup tables for intensity compensation */
     735          21 :             INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
     736          21 :             INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
     737             :         }
     738         127 :         v->qs_last = v->s.quarter_sample;
     739         127 :         if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
     740          39 :             v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
     741          18 :                                    v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
     742          21 :             v->s.mspel          = (v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
     743             :         } else {
     744         207 :             v->s.quarter_sample = (v->mv_mode != MV_PMODE_1MV_HPEL &&
     745         101 :                                    v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
     746         106 :             v->s.mspel          = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
     747             :         }
     748             : 
     749         148 :         if ((v->mv_mode  == MV_PMODE_INTENSITY_COMP &&
     750         148 :              v->mv_mode2 == MV_PMODE_MIXED_MV)      ||
     751         127 :             v->mv_mode   == MV_PMODE_MIXED_MV) {
     752           0 :             status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
     753           0 :             if (status < 0)
     754           0 :                 return -1;
     755           0 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
     756             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
     757             :         } else {
     758         127 :             v->mv_type_is_raw = 0;
     759         127 :             memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
     760             :         }
     761         127 :         status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
     762         127 :         if (status < 0)
     763           0 :             return -1;
     764         127 :         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
     765             :                "Imode: %i, Invert: %i\n", status>>1, status&1);
     766             : 
     767             :         /* Hopefully this is correct for P-frames */
     768         127 :         v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
     769         127 :         v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
     770             : 
     771         127 :         if (v->dquant) {
     772         127 :             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
     773         127 :             vop_dquant_decoding(v);
     774             :         }
     775             : 
     776         127 :         if (v->vstransform) {
     777         127 :             v->ttmbf = get_bits1(gb);
     778         127 :             if (v->ttmbf) {
     779           5 :                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
     780             :             } else
     781         122 :                 v->ttfrm = 0; //FIXME Is that so ?
     782             :         } else {
     783           0 :             v->ttmbf = 1;
     784           0 :             v->ttfrm = TT_8X8;
     785             :         }
     786         127 :         break;
     787           0 :     case AV_PICTURE_TYPE_B:
     788           0 :         v->tt_index = (v->pq > 4) + (v->pq > 12);
     789             : 
     790           0 :         v->mv_mode          = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
     791           0 :         v->qs_last          = v->s.quarter_sample;
     792           0 :         v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
     793           0 :         v->s.mspel          = v->s.quarter_sample;
     794             : 
     795           0 :         status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
     796           0 :         if (status < 0)
     797           0 :             return -1;
     798           0 :         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
     799             :                "Imode: %i, Invert: %i\n", status>>1, status&1);
     800           0 :         status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
     801           0 :         if (status < 0)
     802           0 :             return -1;
     803           0 :         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
     804             :                "Imode: %i, Invert: %i\n", status>>1, status&1);
     805             : 
     806           0 :         v->s.mv_table_index = get_bits(gb, 2);
     807           0 :         v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
     808             : 
     809           0 :         if (v->dquant) {
     810           0 :             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
     811           0 :             vop_dquant_decoding(v);
     812             :         }
     813             : 
     814           0 :         if (v->vstransform) {
     815           0 :             v->ttmbf = get_bits1(gb);
     816           0 :             if (v->ttmbf) {
     817           0 :                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
     818             :             } else
     819           0 :                 v->ttfrm = 0;
     820             :         } else {
     821           0 :             v->ttmbf = 1;
     822           0 :             v->ttfrm = TT_8X8;
     823             :         }
     824           0 :         break;
     825             :     }
     826             : 
     827         208 :     if (!v->x8_type) {
     828             :         /* AC Syntax */
     829         208 :         v->c_ac_table_index = decode012(gb);
     830         208 :         if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
     831          81 :             v->y_ac_table_index = decode012(gb);
     832             :         }
     833             :         /* DC Syntax */
     834         208 :         v->s.dc_table_index = get_bits1(gb);
     835             :     }
     836             : 
     837         208 :     if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
     838           0 :         v->s.pict_type = AV_PICTURE_TYPE_B;
     839           0 :         v->bi_type     = 1;
     840             :     }
     841         208 :     return 0;
     842             : }
     843             : 
     844         910 : int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     845             : {
     846             :     int pqindex, lowquant;
     847             :     int status;
     848             :     int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */
     849             :     int field_mode, fcm;
     850             : 
     851         910 :     v->numref          = 0;
     852         910 :     v->p_frame_skipped = 0;
     853         910 :     if (v->second_field) {
     854          36 :         if (v->fcm != ILACE_FIELD || v->field_mode!=1)
     855           0 :             return -1;
     856          36 :         if (v->fptype & 4)
     857          18 :             v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
     858             :         else
     859          18 :             v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
     860          36 :         v->s.current_picture_ptr->f->pict_type = v->s.pict_type;
     861          36 :         if (!v->pic_header_flag)
     862          36 :             goto parse_common_info;
     863             :     }
     864             : 
     865         874 :     field_mode = 0;
     866         874 :     if (v->interlace) {
     867          87 :         fcm = decode012(gb);
     868          87 :         if (fcm) {
     869          87 :             if (fcm == ILACE_FIELD)
     870          72 :                 field_mode = 1;
     871             :         }
     872             :     } else {
     873         787 :         fcm = PROGRESSIVE;
     874             :     }
     875         874 :     if (!v->first_pic_header_flag && v->field_mode != field_mode)
     876           0 :         return AVERROR_INVALIDDATA;
     877         874 :     v->field_mode = field_mode;
     878         874 :     v->fcm = fcm;
     879             : 
     880         874 :     av_assert0(    v->s.mb_height == v->s.height + 15 >> 4
     881             :                 || v->s.mb_height == FFALIGN(v->s.height + 15 >> 4, 2));
     882         874 :     if (v->field_mode) {
     883          72 :         v->s.mb_height = FFALIGN(v->s.height + 15 >> 4, 2);
     884          72 :         v->fptype = get_bits(gb, 3);
     885          72 :         if (v->fptype & 4) // B-picture
     886          36 :             v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
     887             :         else
     888          36 :             v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
     889             :     } else {
     890         802 :         v->s.mb_height = v->s.height + 15 >> 4;
     891         802 :         switch (get_unary(gb, 0, 4)) {
     892         524 :         case 0:
     893         524 :             v->s.pict_type = AV_PICTURE_TYPE_P;
     894         524 :             break;
     895         125 :         case 1:
     896         125 :             v->s.pict_type = AV_PICTURE_TYPE_B;
     897         125 :             break;
     898          17 :         case 2:
     899          17 :             v->s.pict_type = AV_PICTURE_TYPE_I;
     900          17 :             break;
     901           0 :         case 3:
     902           0 :             v->s.pict_type = AV_PICTURE_TYPE_BI;
     903           0 :             break;
     904         136 :         case 4:
     905         136 :             v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
     906         136 :             v->p_frame_skipped = 1;
     907         136 :             break;
     908             :         }
     909             :     }
     910         874 :     if (v->tfcntrflag)
     911           0 :         skip_bits(gb, 8);
     912         874 :     if (v->broadcast) {
     913         874 :         if (!v->interlace || v->psf) {
     914         787 :             v->rptfrm = get_bits(gb, 2);
     915             :         } else {
     916          87 :             v->tff = get_bits1(gb);
     917          87 :             v->rff = get_bits1(gb);
     918             :         }
     919             :     } else {
     920           0 :         v->tff = 1;
     921             :     }
     922         874 :     if (v->panscanflag) {
     923           0 :         avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
     924             :         //...
     925             :     }
     926         874 :     if (v->p_frame_skipped) {
     927         136 :         return 0;
     928             :     }
     929         738 :     v->rnd = get_bits1(gb);
     930         738 :     if (v->interlace)
     931          87 :         v->uvsamp = get_bits1(gb);
     932         738 :     if(!ff_vc1_bfraction_vlc.table)
     933           0 :         return 0; //parsing only, vlc tables havnt been allocated
     934         738 :     if (v->field_mode) {
     935          72 :         if (!v->refdist_flag)
     936           0 :             v->refdist = 0;
     937          72 :         else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
     938          36 :             v->refdist = get_bits(gb, 2);
     939          36 :             if (v->refdist == 3)
     940           0 :                 v->refdist += get_unary(gb, 0, 16);
     941             :         }
     942          72 :         if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
     943          36 :             if (read_bfraction(v, gb) < 0)
     944           0 :                 return AVERROR_INVALIDDATA;
     945          36 :             v->frfd = (v->bfraction * v->refdist) >> 8;
     946          36 :             v->brfd = v->refdist - v->frfd - 1;
     947          36 :             if (v->brfd < 0)
     948           0 :                 v->brfd = 0;
     949             :         }
     950          72 :         goto parse_common_info;
     951             :     }
     952         666 :     if (v->fcm == PROGRESSIVE) {
     953         651 :         if (v->finterpflag)
     954           0 :             v->interpfrm = get_bits1(gb);
     955         651 :         if (v->s.pict_type == AV_PICTURE_TYPE_B) {
     956         116 :             if (read_bfraction(v, gb) < 0)
     957           0 :                 return AVERROR_INVALIDDATA;
     958         116 :             if (v->bfraction == 0) {
     959           0 :                 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
     960             :             }
     961             :         }
     962             :     }
     963             : 
     964        1440 :     parse_common_info:
     965         774 :     if (v->field_mode)
     966         108 :         v->cur_field_type = !(v->tff ^ v->second_field);
     967         774 :     pqindex = get_bits(gb, 5);
     968         774 :     if (!pqindex)
     969           0 :         return -1;
     970         774 :     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
     971         497 :         v->pq = ff_vc1_pquant_table[0][pqindex];
     972             :     else
     973         277 :         v->pq = ff_vc1_pquant_table[1][pqindex];
     974         774 :     v->pqindex = pqindex;
     975         774 :     if (pqindex < 9)
     976         739 :         v->halfpq = get_bits1(gb);
     977             :     else
     978          35 :         v->halfpq = 0;
     979         774 :     switch (v->quantizer_mode) {
     980         497 :     case QUANT_FRAME_IMPLICIT:
     981         497 :         v->pquantizer = pqindex < 9;
     982         497 :         break;
     983           0 :     case QUANT_NON_UNIFORM:
     984           0 :         v->pquantizer = 0;
     985           0 :         break;
     986           0 :     case QUANT_FRAME_EXPLICIT:
     987           0 :         v->pquantizer = get_bits1(gb);
     988           0 :         break;
     989         277 :     default:
     990         277 :         v->pquantizer = 1;
     991         277 :         break;
     992             :     }
     993         774 :     if (v->postprocflag)
     994           0 :         v->postproc = get_bits(gb, 2);
     995             : 
     996         774 :     if (v->parse_only)
     997         236 :         return 0;
     998             : 
     999         538 :     if (v->first_pic_header_flag)
    1000         231 :         rotate_luts(v);
    1001             : 
    1002         538 :     switch (v->s.pict_type) {
    1003          10 :     case AV_PICTURE_TYPE_I:
    1004             :     case AV_PICTURE_TYPE_BI:
    1005          10 :         if (v->fcm == ILACE_FRAME) { //interlace frame picture
    1006           1 :             status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
    1007           1 :             if (status < 0)
    1008           0 :                 return -1;
    1009           1 :             av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
    1010             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1011             :         }
    1012          10 :         status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
    1013          10 :         if (status < 0)
    1014           0 :             return -1;
    1015          10 :         av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
    1016             :                "Imode: %i, Invert: %i\n", status>>1, status&1);
    1017          10 :         v->condover = CONDOVER_NONE;
    1018          10 :         if (v->overlap && v->pq <= 8) {
    1019           7 :             v->condover = decode012(gb);
    1020           7 :             if (v->condover == CONDOVER_SELECT) {
    1021           2 :                 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
    1022           2 :                 if (status < 0)
    1023           0 :                     return -1;
    1024           2 :                 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
    1025             :                        "Imode: %i, Invert: %i\n", status>>1, status&1);
    1026             :             }
    1027             :         }
    1028          10 :         break;
    1029         430 :     case AV_PICTURE_TYPE_P:
    1030         430 :         if (v->field_mode) {
    1031          35 :             v->numref = get_bits1(gb);
    1032          35 :             if (!v->numref) {
    1033           0 :                 v->reffield          = get_bits1(gb);
    1034           0 :                 v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
    1035             :             }
    1036             :         }
    1037         430 :         if (v->extended_mv)
    1038          66 :             v->mvrange = get_unary(gb, 0, 3);
    1039             :         else
    1040         364 :             v->mvrange = 0;
    1041         430 :         if (v->interlace) {
    1042          37 :             if (v->extended_dmv)
    1043           0 :                 v->dmvrange = get_unary(gb, 0, 3);
    1044             :             else
    1045          37 :                 v->dmvrange = 0;
    1046          37 :             if (v->fcm == ILACE_FRAME) { // interlaced frame picture
    1047           2 :                 v->fourmvswitch = get_bits1(gb);
    1048           2 :                 v->intcomp      = get_bits1(gb);
    1049           2 :                 if (v->intcomp) {
    1050           0 :                     v->lumscale = get_bits(gb, 6);
    1051           0 :                     v->lumshift = get_bits(gb, 6);
    1052           0 :                     INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
    1053           0 :                     INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
    1054           0 :                     v->last_use_ic = 1;
    1055             :                 }
    1056           2 :                 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
    1057           2 :                 av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
    1058             :                        "Imode: %i, Invert: %i\n", status>>1, status&1);
    1059           2 :                 mbmodetab = get_bits(gb, 2);
    1060           2 :                 if (v->fourmvswitch)
    1061           2 :                     v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];
    1062             :                 else
    1063           0 :                     v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
    1064           2 :                 imvtab         = get_bits(gb, 2);
    1065           2 :                 v->imv_vlc     = &ff_vc1_1ref_mvdata_vlc[imvtab];
    1066             :                 // interlaced p-picture cbpcy range is [1, 63]
    1067           2 :                 icbptab        = get_bits(gb, 3);
    1068           2 :                 v->cbpcy_vlc   = &ff_vc1_icbpcy_vlc[icbptab];
    1069           2 :                 twomvbptab     = get_bits(gb, 2);
    1070           2 :                 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
    1071           2 :                 if (v->fourmvswitch) {
    1072           2 :                     fourmvbptab     = get_bits(gb, 2);
    1073           2 :                     v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
    1074             :                 }
    1075             :             }
    1076             :         }
    1077         430 :         v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
    1078         430 :         v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
    1079         430 :         v->range_x = 1 << (v->k_x - 1);
    1080         430 :         v->range_y = 1 << (v->k_y - 1);
    1081             : 
    1082         430 :         v->tt_index = (v->pq > 4) + (v->pq > 12);
    1083         430 :         if (v->fcm != ILACE_FRAME) {
    1084             :             int mvmode;
    1085         428 :             mvmode     = get_unary(gb, 1, 4);
    1086         428 :             lowquant   = (v->pq > 12) ? 0 : 1;
    1087         428 :             v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
    1088         428 :             if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
    1089             :                 int mvmode2;
    1090           0 :                 mvmode2 = get_unary(gb, 1, 3);
    1091           0 :                 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
    1092           0 :                 if (v->field_mode) {
    1093           0 :                     v->intcompfield = decode210(gb) ^ 3;
    1094             :                 } else
    1095           0 :                     v->intcompfield = 3;
    1096             : 
    1097           0 :                 v->lumscale2 = v->lumscale = 32;
    1098           0 :                 v->lumshift2 = v->lumshift =  0;
    1099           0 :                 if (v->intcompfield & 1) {
    1100           0 :                     v->lumscale = get_bits(gb, 6);
    1101           0 :                     v->lumshift = get_bits(gb, 6);
    1102             :                 }
    1103           0 :                 if ((v->intcompfield & 2) && v->field_mode) {
    1104           0 :                     v->lumscale2 = get_bits(gb, 6);
    1105           0 :                     v->lumshift2 = get_bits(gb, 6);
    1106           0 :                 } else if(!v->field_mode) {
    1107           0 :                     v->lumscale2 = v->lumscale;
    1108           0 :                     v->lumshift2 = v->lumshift;
    1109             :                 }
    1110           0 :                 if (v->field_mode && v->second_field) {
    1111           0 :                     if (v->cur_field_type) {
    1112           0 :                         INIT_LUT(v->lumscale , v->lumshift , v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
    1113           0 :                         INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[v->cur_field_type  ], v->last_lutuv[v->cur_field_type  ], 1);
    1114             :                     } else {
    1115           0 :                         INIT_LUT(v->lumscale2, v->lumshift2, v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
    1116           0 :                         INIT_LUT(v->lumscale , v->lumshift , v->last_luty[v->cur_field_type  ], v->last_lutuv[v->cur_field_type  ], 1);
    1117             :                     }
    1118           0 :                     v->next_use_ic = *v->curr_use_ic = 1;
    1119             :                 } else {
    1120           0 :                     INIT_LUT(v->lumscale , v->lumshift , v->last_luty[0], v->last_lutuv[0], 1);
    1121           0 :                     INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[1], v->last_lutuv[1], 1);
    1122             :                 }
    1123           0 :                 v->last_use_ic = 1;
    1124             :             }
    1125         428 :             v->qs_last = v->s.quarter_sample;
    1126         428 :             if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
    1127           0 :                 v->s.quarter_sample = (v->mv_mode2 != MV_PMODE_1MV_HPEL &&
    1128           0 :                                        v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
    1129           0 :                 v->s.mspel          = (v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
    1130             :             } else {
    1131         856 :                 v->s.quarter_sample = (v->mv_mode != MV_PMODE_1MV_HPEL &&
    1132         428 :                                        v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
    1133         428 :                 v->s.mspel          = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
    1134             :             }
    1135             :         }
    1136         430 :         if (v->fcm == PROGRESSIVE) { // progressive
    1137         393 :             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
    1138           0 :                  v->mv_mode2 == MV_PMODE_MIXED_MV)
    1139         393 :                 || v->mv_mode == MV_PMODE_MIXED_MV) {
    1140         333 :                 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
    1141         333 :                 if (status < 0)
    1142           0 :                     return -1;
    1143         333 :                 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
    1144             :                        "Imode: %i, Invert: %i\n", status>>1, status&1);
    1145             :             } else {
    1146          60 :                 v->mv_type_is_raw = 0;
    1147          60 :                 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
    1148             :             }
    1149         393 :             status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
    1150         393 :             if (status < 0)
    1151           0 :                 return -1;
    1152         393 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
    1153             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1154             : 
    1155             :             /* Hopefully this is correct for P-frames */
    1156         393 :             v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
    1157         393 :             v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
    1158          37 :         } else if (v->fcm == ILACE_FRAME) { // frame interlaced
    1159           2 :             v->qs_last          = v->s.quarter_sample;
    1160           2 :             v->s.quarter_sample = 1;
    1161           2 :             v->s.mspel          = 1;
    1162             :         } else {    // field interlaced
    1163          35 :             mbmodetab = get_bits(gb, 3);
    1164          35 :             imvtab = get_bits(gb, 2 + v->numref);
    1165          35 :             if (!v->numref)
    1166           0 :                 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
    1167             :             else
    1168          35 :                 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
    1169          35 :             icbptab = get_bits(gb, 3);
    1170          35 :             v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
    1171          35 :             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
    1172          35 :                 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
    1173          31 :                 fourmvbptab     = get_bits(gb, 2);
    1174          31 :                 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
    1175          31 :                 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
    1176             :             } else {
    1177           4 :                 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
    1178             :             }
    1179             :         }
    1180         430 :         if (v->dquant) {
    1181           6 :             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
    1182           6 :             vop_dquant_decoding(v);
    1183             :         }
    1184             : 
    1185         430 :         if (v->vstransform) {
    1186         416 :             v->ttmbf = get_bits1(gb);
    1187         416 :             if (v->ttmbf) {
    1188           0 :                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
    1189             :             } else
    1190         416 :                 v->ttfrm = 0; //FIXME Is that so ?
    1191             :         } else {
    1192          14 :             v->ttmbf = 1;
    1193          14 :             v->ttfrm = TT_8X8;
    1194             :         }
    1195         430 :         break;
    1196          98 :     case AV_PICTURE_TYPE_B:
    1197          98 :         if (v->fcm == ILACE_FRAME) {
    1198           4 :             if (read_bfraction(v, gb) < 0)
    1199           0 :                 return AVERROR_INVALIDDATA;
    1200           4 :             if (v->bfraction == 0) {
    1201           0 :                 return -1;
    1202             :             }
    1203             :         }
    1204          98 :         if (v->extended_mv)
    1205          70 :             v->mvrange = get_unary(gb, 0, 3);
    1206             :         else
    1207          28 :             v->mvrange = 0;
    1208          98 :         v->k_x     = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
    1209          98 :         v->k_y     = v->mvrange + 8; //k_y can be 8 9 10 11
    1210          98 :         v->range_x = 1 << (v->k_x - 1);
    1211          98 :         v->range_y = 1 << (v->k_y - 1);
    1212             : 
    1213          98 :         v->tt_index = (v->pq > 4) + (v->pq > 12);
    1214             : 
    1215          98 :         if (v->field_mode) {
    1216             :             int mvmode;
    1217          36 :             av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
    1218          36 :             if (v->extended_dmv)
    1219           0 :                 v->dmvrange = get_unary(gb, 0, 3);
    1220          36 :             mvmode = get_unary(gb, 1, 3);
    1221          36 :             lowquant = (v->pq > 12) ? 0 : 1;
    1222          36 :             v->mv_mode          = ff_vc1_mv_pmode_table2[lowquant][mvmode];
    1223          36 :             v->qs_last          = v->s.quarter_sample;
    1224          36 :             v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
    1225          36 :             v->s.mspel          = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);
    1226          36 :             status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
    1227          36 :             if (status < 0)
    1228           0 :                 return -1;
    1229          36 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
    1230             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1231          36 :             mbmodetab = get_bits(gb, 3);
    1232          36 :             if (v->mv_mode == MV_PMODE_MIXED_MV)
    1233          28 :                 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
    1234             :             else
    1235           8 :                 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
    1236          36 :             imvtab       = get_bits(gb, 3);
    1237          36 :             v->imv_vlc   = &ff_vc1_2ref_mvdata_vlc[imvtab];
    1238          36 :             icbptab      = get_bits(gb, 3);
    1239          36 :             v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
    1240          36 :             if (v->mv_mode == MV_PMODE_MIXED_MV) {
    1241          28 :                 fourmvbptab     = get_bits(gb, 2);
    1242          28 :                 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
    1243             :             }
    1244          36 :             v->numref = 1; // interlaced field B pictures are always 2-ref
    1245          62 :         } else if (v->fcm == ILACE_FRAME) {
    1246           4 :             if (v->extended_dmv)
    1247           0 :                 v->dmvrange = get_unary(gb, 0, 3);
    1248           4 :             if (get_bits1(gb)) /* intcomp - present but shall always be 0 */
    1249           0 :                 av_log(v->s.avctx, AV_LOG_WARNING, "Intensity compensation set for B picture\n");
    1250           4 :             v->intcomp          = 0;
    1251           4 :             v->mv_mode          = MV_PMODE_1MV;
    1252           4 :             v->fourmvswitch     = 0;
    1253           4 :             v->qs_last          = v->s.quarter_sample;
    1254           4 :             v->s.quarter_sample = 1;
    1255           4 :             v->s.mspel          = 1;
    1256           4 :             status              = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
    1257           4 :             if (status < 0)
    1258           0 :                 return -1;
    1259           4 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
    1260             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1261           4 :             status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
    1262           4 :             if (status < 0)
    1263           0 :                 return -1;
    1264           4 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
    1265             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1266           4 :             mbmodetab       = get_bits(gb, 2);
    1267           4 :             v->mbmode_vlc   = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
    1268           4 :             imvtab          = get_bits(gb, 2);
    1269           4 :             v->imv_vlc      = &ff_vc1_1ref_mvdata_vlc[imvtab];
    1270             :             // interlaced p/b-picture cbpcy range is [1, 63]
    1271           4 :             icbptab         = get_bits(gb, 3);
    1272           4 :             v->cbpcy_vlc    = &ff_vc1_icbpcy_vlc[icbptab];
    1273           4 :             twomvbptab      = get_bits(gb, 2);
    1274           4 :             v->twomvbp_vlc  = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
    1275           4 :             fourmvbptab     = get_bits(gb, 2);
    1276           4 :             v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
    1277             :         } else {
    1278          58 :             v->mv_mode          = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
    1279          58 :             v->qs_last          = v->s.quarter_sample;
    1280          58 :             v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
    1281          58 :             v->s.mspel          = v->s.quarter_sample;
    1282          58 :             status              = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
    1283          58 :             if (status < 0)
    1284           0 :                 return -1;
    1285          58 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
    1286             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1287          58 :             status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
    1288          58 :             if (status < 0)
    1289           0 :                 return -1;
    1290          58 :             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
    1291             :                    "Imode: %i, Invert: %i\n", status>>1, status&1);
    1292          58 :             v->s.mv_table_index = get_bits(gb, 2);
    1293          58 :             v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
    1294             :         }
    1295             : 
    1296          98 :         if (v->dquant) {
    1297          12 :             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
    1298          12 :             vop_dquant_decoding(v);
    1299             :         }
    1300             : 
    1301          98 :         if (v->vstransform) {
    1302          98 :             v->ttmbf = get_bits1(gb);
    1303          98 :             if (v->ttmbf) {
    1304           0 :                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
    1305             :             } else
    1306          98 :                 v->ttfrm = 0;
    1307             :         } else {
    1308           0 :             v->ttmbf = 1;
    1309           0 :             v->ttfrm = TT_8X8;
    1310             :         }
    1311          98 :         break;
    1312             :     }
    1313             : 
    1314         538 :     if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
    1315          14 :         v->range_x <<= 1;
    1316          14 :         v->range_y <<= 1;
    1317             :     }
    1318             : 
    1319             :     /* AC Syntax */
    1320         538 :     v->c_ac_table_index = decode012(gb);
    1321         538 :     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
    1322          10 :         v->y_ac_table_index = decode012(gb);
    1323             :     }
    1324             :     /* DC Syntax */
    1325         538 :     v->s.dc_table_index = get_bits1(gb);
    1326         538 :     if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
    1327          10 :         && v->dquant) {
    1328           1 :         av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
    1329           1 :         vop_dquant_decoding(v);
    1330             :     }
    1331             : 
    1332         538 :     v->bi_type = (v->s.pict_type == AV_PICTURE_TYPE_BI);
    1333         538 :     if (v->bi_type)
    1334           0 :         v->s.pict_type = AV_PICTURE_TYPE_B;
    1335             : 
    1336         538 :     return 0;
    1337             : }
    1338             : 
    1339             : static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {
    1340             : {
    1341             : { 0x0001,  2}, { 0x0005,  3}, { 0x000D,  4}, { 0x0012,  5}, { 0x000E,  6}, { 0x0015,  7},
    1342             : { 0x0013,  8}, { 0x003F,  8}, { 0x004B,  9}, { 0x011F,  9}, { 0x00B8, 10}, { 0x03E3, 10},
    1343             : { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},
    1344             : { 0x3EAE, 14}, { 0x0000,  4}, { 0x0010,  5}, { 0x0008,  7}, { 0x0020,  8}, { 0x0029,  9},
    1345             : { 0x01F4,  9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},
    1346             : { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003,  5}, { 0x0011,  7},
    1347             : { 0x00C4,  8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},
    1348             : { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013,  5}, { 0x0078,  7},
    1349             : { 0x0069,  9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},
    1350             : { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C,  6}, { 0x0024,  9}, { 0x0094, 11},
    1351             : { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D,  6}, { 0x0053,  9}, { 0x01A0, 11},
    1352             : { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013,  7}, { 0x007C,  9}, { 0x07C1, 11}, { 0x04AC, 14},
    1353             : { 0x001B,  7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079,  7}, { 0x03E1, 10},
    1354             : { 0x02D4, 13}, { 0x2306, 14}, { 0x0021,  8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},
    1355             : { 0x0035,  8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5,  8}, { 0x0174, 11}, { 0x0785, 13},
    1356             : { 0x0048,  9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C,  9}, { 0x00FA, 10}, { 0x07D6, 11},
    1357             : { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},
    1358             : { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},
    1359             : { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},
    1360             : { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E,  4},
    1361             : { 0x0045,  7}, { 0x01F3,  9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019,  5},
    1362             : { 0x0028,  9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030,  6}, { 0x00A2, 10},
    1363             : { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F,  6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},
    1364             : { 0x0044,  7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063,  7}, { 0x03C3, 12}, { 0x0015,  8},
    1365             : { 0x08F6, 12}, { 0x0017,  8}, { 0x0498, 13}, { 0x002C,  8}, { 0x07B2, 13}, { 0x002F,  8},
    1366             : { 0x1F54, 13}, { 0x008D,  8}, { 0x07BD, 13}, { 0x008E,  8}, { 0x1182, 13}, { 0x00FB,  8},
    1367             : { 0x050B, 13}, { 0x002D,  8}, { 0x07C0, 11}, { 0x0079,  9}, { 0x1F5F, 13}, { 0x007A,  9},
    1368             : { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},
    1369             : { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},
    1370             : { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},
    1371             : { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A,  9}
    1372             : },
    1373             : {
    1374             : { 0x0000,  3}, { 0x0003,  4}, { 0x000B,  5}, { 0x0014,  6}, { 0x003F,  6}, { 0x005D,  7},
    1375             : { 0x00A2,  8}, { 0x00AC,  9}, { 0x016E,  9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},
    1376             : { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},
    1377             : { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004,  4},
    1378             : { 0x001E,  5}, { 0x0042,  7}, { 0x00B6,  8}, { 0x0173,  9}, { 0x0395, 10}, { 0x072E, 11},
    1379             : { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005,  5}, { 0x0040,  7},
    1380             : { 0x0049,  9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},
    1381             : { 0x0018,  5}, { 0x0025,  8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},
    1382             : { 0x139C, 15}, { 0x0029,  6}, { 0x004F,  9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},
    1383             : { 0x0038,  6}, { 0x010E,  9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058,  7},
    1384             : { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023,  8}, { 0x02E3, 10}, { 0x04E5, 13},
    1385             : { 0x2E40, 14}, { 0x00A1,  8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083,  8}, { 0x013A, 11},
    1386             : { 0x1721, 13}, { 0x0044,  9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},
    1387             : { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},
    1388             : { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},
    1389             : { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},
    1390             : { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003,  3}, { 0x002A,  6}, { 0x00E4,  8},
    1391             : { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},
    1392             : { 0x0009,  4}, { 0x0054,  8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D,  4},
    1393             : { 0x00AD,  9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011,  5}, { 0x016B,  9}, { 0x0B7F, 12},
    1394             : { 0x51A4, 15}, { 0x0019,  5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D,  5}, { 0x0394, 10},
    1395             : { 0x28D3, 14}, { 0x002B,  6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F,  6}, { 0x0247, 12},
    1396             : { 0x0010,  7}, { 0x0A35, 12}, { 0x003E,  6}, { 0x0B7A, 12}, { 0x0059,  7}, { 0x105E, 13},
    1397             : { 0x0026,  8}, { 0x09CF, 14}, { 0x0055,  8}, { 0x1CB5, 13}, { 0x0057,  8}, { 0x0E5B, 12},
    1398             : { 0x00A0,  8}, { 0x1468, 13}, { 0x0170,  9}, { 0x0090, 10}, { 0x01CE,  9}, { 0x021A, 10},
    1399             : { 0x0218, 10}, { 0x0168,  9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},
    1400             : { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},
    1401             : { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},
    1402             : { 0x0169,  9}
    1403             : },
    1404             : {
    1405             : { 0x0001,  2}, { 0x0006,  3}, { 0x000F,  4}, { 0x0016,  5}, { 0x0020,  6}, { 0x0018,  7},
    1406             : { 0x0008,  8}, { 0x009A,  8}, { 0x0056,  9}, { 0x013E,  9}, { 0x00F0, 10}, { 0x03A5, 10},
    1407             : { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001,  4}, { 0x0011,  5},
    1408             : { 0x0002,  7}, { 0x000B,  8}, { 0x0012,  9}, { 0x01D6,  9}, { 0x027E, 10}, { 0x0191, 11},
    1409             : { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004,  5}, { 0x0014,  7}, { 0x009E,  8},
    1410             : { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017,  5},
    1411             : { 0x004E,  7}, { 0x005E,  9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},
    1412             : { 0x000E,  6}, { 0x00E1,  8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B,  6},
    1413             : { 0x001C,  9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006,  7}, { 0x007A,  9}, { 0x0190, 11},
    1414             : { 0x0137, 13}, { 0x001B,  7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071,  7}, { 0x00D7, 10},
    1415             : { 0x09BF, 12}, { 0x0007,  8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034,  8}, { 0x0265, 10},
    1416             : { 0x009F, 12}, { 0x00E0,  8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015,  9}, { 0x017D, 11},
    1417             : { 0x0EBB, 12}, { 0x0014,  9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},
    1418             : { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},
    1419             : { 0x013A, 13}, { 0x000A,  4}, { 0x0042,  7}, { 0x01D3,  9}, { 0x04DD, 11}, { 0x0012,  5},
    1420             : { 0x00E8,  8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039,  6}, { 0x0264, 10}, { 0x0EBA, 12},
    1421             : { 0x0000,  7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F,  7}, { 0x04DE, 11}, { 0x0043,  7},
    1422             : { 0x04DC, 11}, { 0x0003,  8}, { 0x03CB, 12}, { 0x0006,  8}, { 0x099E, 12}, { 0x002A,  8},
    1423             : { 0x05F1, 13}, { 0x000F,  8}, { 0x09FE, 12}, { 0x0033,  8}, { 0x09FF, 12}, { 0x0098,  8},
    1424             : { 0x099F, 12}, { 0x00EA,  8}, { 0x013C, 13}, { 0x002E,  8}, { 0x0192, 11}, { 0x0136,  9},
    1425             : { 0x006A,  9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},
    1426             : { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},
    1427             : { 0x0016,  7}
    1428             : },
    1429             : {
    1430             : { 0x0004,  3}, { 0x0014,  5}, { 0x0017,  7}, { 0x007F,  8}, { 0x0154,  9}, { 0x01F2, 10},
    1431             : { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},
    1432             : { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B,  4}, { 0x0037,  7}, { 0x0062,  9}, { 0x0007, 11},
    1433             : { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007,  5},
    1434             : { 0x006D,  8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002,  6}, { 0x0061,  9},
    1435             : { 0x0055, 12}, { 0x01DF, 14}, { 0x001A,  6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},
    1436             : { 0x001E,  6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006,  7}, { 0x0004, 11},
    1437             : { 0x02F8, 13}, { 0x0019,  7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057,  7}, { 0x0182, 11},
    1438             : { 0x2AA2, 14}, { 0x0004,  8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D,  8}, { 0x0164, 12},
    1439             : { 0x076D, 15}, { 0x0002,  9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD,  8}, { 0x0060, 12},
    1440             : { 0x0C67, 14}, { 0x001C,  9}, { 0x00EE, 13}, { 0x0003,  9}, { 0x02CF, 13}, { 0x00D9,  9},
    1441             : { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},
    1442             : { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},
    1443             : { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003,  2}, { 0x0054,  7}, { 0x02AB, 10},
    1444             : { 0x0016, 13}, { 0x05F7, 14}, { 0x0005,  4}, { 0x00F8,  9}, { 0x0AA9, 12}, { 0x005F, 15},
    1445             : { 0x0004,  4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004,  5}, { 0x0077, 11}, { 0x076C, 15},
    1446             : { 0x000E,  5}, { 0x000A, 12}, { 0x000C,  5}, { 0x0562, 11}, { 0x0004,  6}, { 0x031C, 12},
    1447             : { 0x0006,  6}, { 0x00C8, 13}, { 0x000D,  6}, { 0x01DA, 13}, { 0x0007,  6}, { 0x00C9, 13},
    1448             : { 0x0001,  7}, { 0x002E, 14}, { 0x0014,  7}, { 0x1596, 13}, { 0x000A,  7}, { 0x0AC2, 12},
    1449             : { 0x0016,  7}, { 0x015B, 14}, { 0x0015,  7}, { 0x015A, 14}, { 0x000F,  8}, { 0x005E, 15},
    1450             : { 0x007E,  8}, { 0x00AB,  8}, { 0x002D,  9}, { 0x00D8,  9}, { 0x000B,  9}, { 0x0014, 10},
    1451             : { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E,  9},
    1452             : { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},
    1453             : { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},
    1454             : { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D,  9}
    1455             : },
    1456             : {
    1457             : { 0x0002,  2}, { 0x0006,  3}, { 0x000F,  4}, { 0x000D,  5}, { 0x000C,  5}, { 0x0015,  6},
    1458             : { 0x0013,  6}, { 0x0012,  6}, { 0x0017,  7}, { 0x001F,  8}, { 0x001E,  8}, { 0x001D,  8},
    1459             : { 0x0025,  9}, { 0x0024,  9}, { 0x0023,  9}, { 0x0021,  9}, { 0x0021, 10}, { 0x0020, 10},
    1460             : { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},
    1461             : { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E,  4}, { 0x0014,  6}, { 0x0016,  7},
    1462             : { 0x001C,  8}, { 0x0020,  9}, { 0x001F,  9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},
    1463             : { 0x0055, 12}, { 0x000B,  5}, { 0x0015,  7}, { 0x001E,  9}, { 0x000C, 10}, { 0x0056, 12},
    1464             : { 0x0011,  6}, { 0x001B,  8}, { 0x001D,  9}, { 0x000B, 10}, { 0x0010,  6}, { 0x0022,  9},
    1465             : { 0x000A, 10}, { 0x000D,  6}, { 0x001C,  9}, { 0x0008, 10}, { 0x0012,  7}, { 0x001B,  9},
    1466             : { 0x0054, 12}, { 0x0014,  7}, { 0x001A,  9}, { 0x0057, 12}, { 0x0019,  8}, { 0x0009, 10},
    1467             : { 0x0018,  8}, { 0x0023, 11}, { 0x0017,  8}, { 0x0019,  9}, { 0x0018,  9}, { 0x0007, 10},
    1468             : { 0x0058, 12}, { 0x0007,  4}, { 0x000C,  6}, { 0x0016,  8}, { 0x0017,  9}, { 0x0006, 10},
    1469             : { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F,  6}, { 0x0016,  9}, { 0x0005, 10},
    1470             : { 0x000E,  6}, { 0x0004, 10}, { 0x0011,  7}, { 0x0024, 11}, { 0x0010,  7}, { 0x0025, 11},
    1471             : { 0x0013,  7}, { 0x005A, 12}, { 0x0015,  8}, { 0x005B, 12}, { 0x0014,  8}, { 0x0013,  8},
    1472             : { 0x001A,  8}, { 0x0015,  9}, { 0x0014,  9}, { 0x0013,  9}, { 0x0012,  9}, { 0x0011,  9},
    1473             : { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
    1474             : { 0x0003,  7}
    1475             : },
    1476             : {
    1477             : { 0x0002,  2}, { 0x000F,  4}, { 0x0015,  6}, { 0x0017,  7}, { 0x001F,  8}, { 0x0025,  9},
    1478             : { 0x0024,  9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},
    1479             : { 0x0006,  3}, { 0x0014,  6}, { 0x001E,  8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},
    1480             : { 0x000E,  4}, { 0x001D,  8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D,  5}, { 0x0023,  9},
    1481             : { 0x000D, 10}, { 0x000C,  5}, { 0x0022,  9}, { 0x0052, 12}, { 0x000B,  5}, { 0x000C, 10},
    1482             : { 0x0053, 12}, { 0x0013,  6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012,  6}, { 0x000A, 10},
    1483             : { 0x0011,  6}, { 0x0009, 10}, { 0x0010,  6}, { 0x0008, 10}, { 0x0016,  7}, { 0x0055, 12},
    1484             : { 0x0015,  7}, { 0x0014,  7}, { 0x001C,  8}, { 0x001B,  8}, { 0x0021,  9}, { 0x0020,  9},
    1485             : { 0x001F,  9}, { 0x001E,  9}, { 0x001D,  9}, { 0x001C,  9}, { 0x001B,  9}, { 0x001A,  9},
    1486             : { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007,  4}, { 0x0019,  9},
    1487             : { 0x0005, 11}, { 0x000F,  6}, { 0x0004, 11}, { 0x000E,  6}, { 0x000D,  6}, { 0x000C,  6},
    1488             : { 0x0013,  7}, { 0x0012,  7}, { 0x0011,  7}, { 0x0010,  7}, { 0x001A,  8}, { 0x0019,  8},
    1489             : { 0x0018,  8}, { 0x0017,  8}, { 0x0016,  8}, { 0x0015,  8}, { 0x0014,  8}, { 0x0013,  8},
    1490             : { 0x0018,  9}, { 0x0017,  9}, { 0x0016,  9}, { 0x0015,  9}, { 0x0014,  9}, { 0x0013,  9},
    1491             : { 0x0012,  9}, { 0x0011,  9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},
    1492             : { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},
    1493             : { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
    1494             : { 0x0003,  7}
    1495             : },
    1496             : {
    1497             : { 0x0000,  2}, { 0x0003,  3}, { 0x000D,  4}, { 0x0005,  4}, { 0x001C,  5}, { 0x0016,  5},
    1498             : { 0x003F,  6}, { 0x003A,  6}, { 0x002E,  6}, { 0x0022,  6}, { 0x007B,  7}, { 0x0067,  7},
    1499             : { 0x005F,  7}, { 0x0047,  7}, { 0x0026,  7}, { 0x00EF,  8}, { 0x00CD,  8}, { 0x00C1,  8},
    1500             : { 0x00A9,  8}, { 0x004F,  8}, { 0x01F2,  9}, { 0x01DD,  9}, { 0x0199,  9}, { 0x0185,  9},
    1501             : { 0x015D,  9}, { 0x011B,  9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},
    1502             : { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},
    1503             : { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},
    1504             : { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},
    1505             : { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},
    1506             : { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009,  4}, { 0x0010,  5}, { 0x0029,  6}, { 0x0062,  7},
    1507             : { 0x00F3,  8}, { 0x00AD,  8}, { 0x01E5,  9}, { 0x0179,  9}, { 0x009C,  9}, { 0x03B1, 10},
    1508             : { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},
    1509             : { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008,  5}, { 0x0063,  7},
    1510             : { 0x00AF,  8}, { 0x017B,  9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},
    1511             : { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028,  6}, { 0x00C3,  8}, { 0x0151,  9}, { 0x02A1, 10},
    1512             : { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065,  7}, { 0x01DA,  9}, { 0x02AF, 10},
    1513             : { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025,  7}, { 0x0118,  9}, { 0x0646, 11},
    1514             : { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9,  8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},
    1515             : { 0x0048,  8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180,  9}, { 0x0465, 11}, { 0x1905, 13},
    1516             : { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},
    1517             : { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},
    1518             : { 0x0078,  7}, { 0x0155,  9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA,  8}, { 0x07DC, 11},
    1519             : { 0x1907, 13}, { 0x00AC,  8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6,  9}, { 0x0AE2, 12},
    1520             : { 0x01DC,  9}, { 0x04ED, 12}, { 0x0184,  9}, { 0x1904, 13}, { 0x0156,  9}, { 0x09D9, 13},
    1521             : { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},
    1522             : { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},
    1523             : { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},
    1524             : { 0x007A,  7}
    1525             : },
    1526             : {
    1527             : { 0x0002,  2}, { 0x0000,  3}, { 0x001E,  5}, { 0x0004,  5}, { 0x0012,  6}, { 0x0070,  7},
    1528             : { 0x001A,  7}, { 0x005F,  8}, { 0x0047,  8}, { 0x01D3,  9}, { 0x00B5,  9}, { 0x0057,  9},
    1529             : { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},
    1530             : { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},
    1531             : { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},
    1532             : { 0x08C0, 13}, { 0x055D, 13}, { 0x0003,  3}, { 0x000A,  5}, { 0x0077,  7}, { 0x00E5,  8},
    1533             : { 0x01D9,  9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},
    1534             : { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C,  4}, { 0x007D,  7}, { 0x0044,  8},
    1535             : { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B,  5},
    1536             : { 0x00E2,  8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007,  5},
    1537             : { 0x01D8,  9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035,  6}, { 0x03E1, 10},
    1538             : { 0x059C, 12}, { 0x38C3, 14}, { 0x000C,  6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},
    1539             : { 0x0068,  7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020,  7}, { 0x0F90, 12}, { 0x7CF6, 15},
    1540             : { 0x00E8,  8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045,  8}, { 0x0B3A, 13}, { 0x01F1,  9},
    1541             : { 0x3B46, 14}, { 0x01A7,  9}, { 0x1676, 14}, { 0x0056,  9}, { 0x692A, 15}, { 0x038D, 10},
    1542             : { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},
    1543             : { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},
    1544             : { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},
    1545             : { 0x055F, 13}, { 0x003F,  6}, { 0x006D,  9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013,  6},
    1546             : { 0x0119, 10}, { 0x0B66, 13}, { 0x000B,  6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075,  7},
    1547             : { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E,  7}, { 0x1F22, 13}, { 0x0021,  7}, { 0x054F, 13},
    1548             : { 0x0014,  7}, { 0x3A44, 14}, { 0x00E4,  8}, { 0x7CF7, 15}, { 0x005E,  8}, { 0x7185, 15},
    1549             : { 0x0037,  8}, { 0x2C73, 15}, { 0x01DB,  9}, { 0x59DD, 16}, { 0x01C7,  9}, { 0x692B, 15},
    1550             : { 0x01A6,  9}, { 0x58E5, 16}, { 0x00B4,  9}, { 0x1F3D0, 17}, { 0x00B0,  9}, { 0xB1C9, 17},
    1551             : { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},
    1552             : { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},
    1553             : { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},
    1554             : { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},
    1555             : { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},
    1556             : { 0x0073,  7}
    1557             : }
    1558             : };
    1559             : 
    1560             : static const uint16_t vlc_offs[] = {
    1561             :         0,   520,   552,   616,  1128,  1160,  1224,  1740,  1772,  1836,  1900,  2436,
    1562             :      2986,  3050,  3610,  4154,  4218,  4746,  5326,  5390,  5902,  6554,  7658,  8342,
    1563             :      9304,  9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
    1564             :     20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
    1565             :     27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
    1566             :     29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
    1567             :     31714, 31746, 31778, 32306, 32340, 32372
    1568             : };
    1569             : 
    1570             : /**
    1571             :  * Init VC-1 specific tables and VC1Context members
    1572             :  * @param v The VC1Context to initialize
    1573             :  * @return Status
    1574             :  */
    1575          36 : av_cold int ff_vc1_init_common(VC1Context *v)
    1576             : {
    1577             :     static int done = 0;
    1578          36 :     int i = 0;
    1579             :     static VLC_TYPE vlc_table[32372][2];
    1580             : 
    1581          36 :     v->hrd_rate = v->hrd_buffer = NULL;
    1582             : 
    1583             :     /* VLC tables */
    1584          36 :     if (!done) {
    1585          15 :         INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
    1586             :                         ff_vc1_bfraction_bits, 1, 1,
    1587             :                         ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
    1588          15 :         INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
    1589             :                         ff_vc1_norm2_bits, 1, 1,
    1590             :                         ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
    1591          15 :         INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
    1592             :                         ff_vc1_norm6_bits, 1, 1,
    1593             :                         ff_vc1_norm6_codes, 2, 2, 556);
    1594          15 :         INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
    1595             :                         ff_vc1_imode_bits, 1, 1,
    1596             :                         ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
    1597          60 :         for (i = 0; i < 3; i++) {
    1598          45 :             ff_vc1_ttmb_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 0]];
    1599          45 :             ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
    1600          45 :             init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
    1601             :                      ff_vc1_ttmb_bits[i], 1, 1,
    1602             :                      ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
    1603          45 :             ff_vc1_ttblk_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 1]];
    1604          45 :             ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
    1605          45 :             init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
    1606             :                      ff_vc1_ttblk_bits[i], 1, 1,
    1607             :                      ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1608          45 :             ff_vc1_subblkpat_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 2]];
    1609          45 :             ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
    1610          45 :             init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
    1611             :                      ff_vc1_subblkpat_bits[i], 1, 1,
    1612             :                      ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1613             :         }
    1614          75 :         for (i = 0; i < 4; i++) {
    1615          60 :             ff_vc1_4mv_block_pattern_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 9]];
    1616          60 :             ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
    1617          60 :             init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
    1618             :                      ff_vc1_4mv_block_pattern_bits[i], 1, 1,
    1619             :                      ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1620          60 :             ff_vc1_cbpcy_p_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 10]];
    1621          60 :             ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
    1622          60 :             init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
    1623             :                      ff_vc1_cbpcy_p_bits[i], 1, 1,
    1624             :                      ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
    1625          60 :             ff_vc1_mv_diff_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 11]];
    1626          60 :             ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
    1627          60 :             init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
    1628             :                      ff_vc1_mv_diff_bits[i], 1, 1,
    1629             :                      ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
    1630             :         }
    1631         135 :         for (i = 0; i < 8; i++) {
    1632         120 :             ff_vc1_ac_coeff_table[i].table           = &vlc_table[vlc_offs[i * 2 + 21]];
    1633         120 :             ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
    1634         120 :             init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],
    1635             :                      &vc1_ac_tables[i][0][1], 8, 4,
    1636             :                      &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
    1637             :             /* initialize interlaced MVDATA tables (2-Ref) */
    1638         120 :             ff_vc1_2ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 2 + 22]];
    1639         120 :             ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
    1640         120 :             init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
    1641             :                      ff_vc1_2ref_mvdata_bits[i], 1, 1,
    1642             :                      ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
    1643             :         }
    1644          75 :         for (i = 0; i < 4; i++) {
    1645             :             /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
    1646          60 :             ff_vc1_intfr_4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 37]];
    1647          60 :             ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
    1648          60 :             init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
    1649             :                      ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,
    1650             :                      ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
    1651             :             /* initialize NON-4MV MBMODE VLC tables for the same */
    1652          60 :             ff_vc1_intfr_non4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 38]];
    1653          60 :             ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
    1654          60 :             init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
    1655             :                      ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
    1656             :                      ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1657             :             /* initialize interlaced MVDATA tables (1-Ref) */
    1658          60 :             ff_vc1_1ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 39]];
    1659          60 :             ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
    1660          60 :             init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
    1661             :                      ff_vc1_1ref_mvdata_bits[i], 1, 1,
    1662             :                      ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
    1663             :         }
    1664          75 :         for (i = 0; i < 4; i++) {
    1665             :             /* Initialize 2MV Block pattern VLC tables */
    1666          60 :             ff_vc1_2mv_block_pattern_vlc[i].table           = &vlc_table[vlc_offs[i + 49]];
    1667          60 :             ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
    1668          60 :             init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
    1669             :                      ff_vc1_2mv_block_pattern_bits[i], 1, 1,
    1670             :                      ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1671             :         }
    1672         135 :         for (i = 0; i < 8; i++) {
    1673             :             /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
    1674         120 :             ff_vc1_icbpcy_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 53]];
    1675         120 :             ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
    1676         120 :             init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
    1677             :                      ff_vc1_icbpcy_p_bits[i], 1, 1,
    1678             :                      ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
    1679             :             /* Initialize interlaced field picture MBMODE VLC tables */
    1680         120 :             ff_vc1_if_mmv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 54]];
    1681         120 :             ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
    1682         120 :             init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
    1683             :                      ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
    1684             :                      ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1685         120 :             ff_vc1_if_1mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 55]];
    1686         120 :             ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
    1687         120 :             init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
    1688             :                      ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
    1689             :                      ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
    1690             :         }
    1691          15 :         done = 1;
    1692             :     }
    1693             : 
    1694             :     /* Other defaults */
    1695          36 :     v->pq      = -1;
    1696          36 :     v->mvrange = 0; /* 7.1.1.18, p80 */
    1697             : 
    1698          36 :     ff_vc1dsp_init(&v->vc1dsp);
    1699             : 
    1700          36 :     return 0;
    1701             : }

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