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FFmpeg/libavcodec/vc1.c

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  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 Libav.

  8.  *

  9.  * Libav 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.  * Libav 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 Libav; 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. 

  30. #include "internal.h"

  31. #include "dsputil.h"

  32. #include "avcodec.h"

  33. #include "mpegvideo.h"

  34. #include "vc1.h"

  35. #include "vc1data.h"

  36. #include "msmpeg4data.h"

  37. #include "unary.h"

  38. #include "simple_idct.h"

  39. 

  40. #undef NDEBUG

  41. #include <assert.h>

  42. 

  43. /***********************************************************************/

  44. /**

  45.  * @name VC-1 Bitplane decoding

  46.  * @see 8.7, p56

  47.  * @{

  48.  */

  49. 

  50. /**

  51.  * Imode types

  52.  * @{

  53.  */

  54. enum Imode {

  55.     IMODE_RAW,

  56.     IMODE_NORM2,

  57.     IMODE_DIFF2,

  58.     IMODE_NORM6,

  59.     IMODE_DIFF6,

  60.     IMODE_ROWSKIP,

  61.     IMODE_COLSKIP

  62. };

  63. /** @} */ //imode defines

  64. 

  65. /** Decode rows by checking if they are skipped

  66.  * @param plane Buffer to store decoded bits

  67.  * @param[in] width Width of this buffer

  68.  * @param[in] height Height of this buffer

  69.  * @param[in] stride of this buffer

  70.  */

  71. static void decode_rowskip(uint8_t* plane, int width, int height, int stride,

  72.                            GetBitContext *gb)

  73. {

  74.     int x, y;

  75. 

  76.     for (y = 0; y < height; y++) {

  77.         if (!get_bits1(gb)) //rowskip

  78.             memset(plane, 0, width);

  79.         else

  80.             for (x = 0; x < width; x++)

  81.                 plane[x] = get_bits1(gb);

  82.         plane += stride;

  83.     }

  84. }

  85. 

  86. /** Decode columns by checking if they are skipped

  87.  * @param plane Buffer to store decoded bits

  88.  * @param[in] width Width of this buffer

  89.  * @param[in] height Height of this buffer

  90.  * @param[in] stride of this buffer

  91.  * @todo FIXME: Optimize

  92.  */

  93. static void decode_colskip(uint8_t* plane, int width, int height, int stride,

  94.                            GetBitContext *gb)

  95. {

  96.     int x, y;

  97. 

  98.     for (x = 0; x < width; x++) {

  99.         if (!get_bits1(gb)) //colskip

  100.             for (y = 0; y < height; y++)

  101.                 plane[y*stride] = 0;

  102.         else

  103.             for (y = 0; y < height; y++)

  104.                 plane[y*stride] = get_bits1(gb);

  105.         plane ++;

  106.     }

  107. }

  108. 

  109. /** Decode a bitplane's bits

  110.  * @param data bitplane where to store the decode bits

  111.  * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly

  112.  * @param v VC-1 context for bit reading and logging

  113.  * @return Status

  114.  * @todo FIXME: Optimize

  115.  */

  116. static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)

  117. {

  118.     GetBitContext *gb = &v->s.gb;

  119. 

  120.     int imode, x, y, code, offset;

  121.     uint8_t invert, *planep = data;

  122.     int width, height, stride;

  123. 

  124.     width  = v->s.mb_width;

  125.     height = v->s.mb_height >> v->field_mode;

  126.     stride = v->s.mb_stride;

  127.     invert = get_bits1(gb);

  128.     imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);

  129. 

  130.     *raw_flag = 0;

  131.     switch (imode) {

  132.     case IMODE_RAW:

  133.         //Data is actually read in the MB layer (same for all tests == "raw")

  134.         *raw_flag = 1; //invert ignored

  135.         return invert;

  136.     case IMODE_DIFF2:

  137.     case IMODE_NORM2:

  138.         if ((height * width) & 1) {

  139.             *planep++ = get_bits1(gb);

  140.             offset    = 1;

  141.         }

  142.         else

  143.             offset = 0;

  144.         // decode bitplane as one long line

  145.         for (y = offset; y < height * width; y += 2) {

  146.             code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);

  147.             *planep++ = code & 1;

  148.             offset++;

  149.             if (offset == width) {

  150.                 offset  = 0;

  151.                 planep += stride - width;

  152.             }

  153.             *planep++ = code >> 1;

  154.             offset++;

  155.             if (offset == width) {

  156.                 offset  = 0;

  157.                 planep += stride - width;

  158.             }

  159.         }

  160.         break;

  161.     case IMODE_DIFF6:

  162.     case IMODE_NORM6:

  163.         if (!(height % 3) && (width % 3)) { // use 2x3 decoding

  164.             for (y = 0; y < height; y += 3) {

  165.                 for (x = width & 1; x < width; x += 2) {

  166.                     code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);

  167.                     if (code < 0) {

  168.                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");

  169.                         return -1;

  170.                     }

  171.                     planep[x + 0]              = (code >> 0) & 1;

  172.                     planep[x + 1]              = (code >> 1) & 1;

  173.                     planep[x + 0 + stride]     = (code >> 2) & 1;

  174.                     planep[x + 1 + stride]     = (code >> 3) & 1;

  175.                     planep[x + 0 + stride * 2] = (code >> 4) & 1;

  176.                     planep[x + 1 + stride * 2] = (code >> 5) & 1;

  177.                 }

  178.                 planep += stride * 3;

  179.             }

  180.             if (width & 1)

  181.                 decode_colskip(data, 1, height, stride, &v->s.gb);

  182.         } else { // 3x2

  183.             planep += (height & 1) * stride;

  184.             for (y = height & 1; y < height; y += 2) {

  185.                 for (x = width % 3; x < width; x += 3) {

  186.                     code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);

  187.                     if (code < 0) {

  188.                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");

  189.                         return -1;

  190.                     }

  191.                     planep[x + 0]          = (code >> 0) & 1;

  192.                     planep[x + 1]          = (code >> 1) & 1;

  193.                     planep[x + 2]          = (code >> 2) & 1;

  194.                     planep[x + 0 + stride] = (code >> 3) & 1;

  195.                     planep[x + 1 + stride] = (code >> 4) & 1;

  196.                     planep[x + 2 + stride] = (code >> 5) & 1;

  197.                 }

  198.                 planep += stride * 2;

  199.             }

  200.             x = width % 3;

  201.             if (x)

  202.                 decode_colskip(data,             x, height, stride, &v->s.gb);

  203.             if (height & 1)

  204.                 decode_rowskip(data + x, width - x,      1, stride, &v->s.gb);

  205.         }

  206.         break;

  207.     case IMODE_ROWSKIP:

  208.         decode_rowskip(data, width, height, stride, &v->s.gb);

  209.         break;

  210.     case IMODE_COLSKIP:

  211.         decode_colskip(data, width, height, stride, &v->s.gb);

  212.         break;

  213.     default:

  214.         break;

  215.     }

  216. 

  217.     /* Applying diff operator */

  218.     if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {

  219.         planep = data;

  220.         planep[0] ^= invert;

  221.         for (x = 1; x < width; x++)

  222.             planep[x] ^= planep[x-1];

  223.         for (y = 1; y < height; y++) {

  224.             planep += stride;

  225.             planep[0] ^= planep[-stride];

  226.             for (x = 1; x < width; x++) {

  227.                 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;

  228.                 else                                 planep[x] ^= planep[x-1];

  229.             }

  230.         }

  231.     } else if (invert) {

  232.         planep = data;

  233.         for (x = 0; x < stride * height; x++)

  234.             planep[x] = !planep[x]; //FIXME stride

  235.     }

  236.     return (imode << 1) + invert;

  237. }

  238. 

  239. /** @} */ //Bitplane group

  240. 

  241. /***********************************************************************/

  242. /** VOP Dquant decoding

  243.  * @param v VC-1 Context

  244.  */

  245. static int vop_dquant_decoding(VC1Context *v)

  246. {

  247.     GetBitContext *gb = &v->s.gb;

  248.     int pqdiff;

  249. 

  250.     //variable size

  251.     if (v->dquant == 2) {

  252.         pqdiff = get_bits(gb, 3);

  253.         if (pqdiff == 7)

  254.             v->altpq = get_bits(gb, 5);

  255.         else

  256.             v->altpq = v->pq + pqdiff + 1;

  257.     } else {

  258.         v->dquantfrm = get_bits1(gb);

  259.         if (v->dquantfrm) {

  260.             v->dqprofile = get_bits(gb, 2);

  261.             switch (v->dqprofile) {

  262.             case DQPROFILE_SINGLE_EDGE:

  263.             case DQPROFILE_DOUBLE_EDGES:

  264.                 v->dqsbedge = get_bits(gb, 2);

  265.                 break;

  266.             case DQPROFILE_ALL_MBS:

  267.                 v->dqbilevel = get_bits1(gb);

  268.                 if (!v->dqbilevel)

  269.                     v->halfpq = 0;

  270.             default:

  271.                 break; //Forbidden ?

  272.             }

  273.             if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) {

  274.                 pqdiff = get_bits(gb, 3);

  275.                 if (pqdiff == 7)

  276.                     v->altpq = get_bits(gb, 5);

  277.                 else

  278.                     v->altpq = v->pq + pqdiff + 1;

  279.             }

  280.         }

  281.     }

  282.     return 0;

  283. }

  284. 

  285. static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);

  286. 

  287. /**

  288.  * Decode Simple/Main Profiles sequence header

  289.  * @see Figure 7-8, p16-17

  290.  * @param avctx Codec context

  291.  * @param gb GetBit context initialized from Codec context extra_data

  292.  * @return Status

  293.  */

  294. int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)

  295. {

  296.     av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));

  297.     v->profile = get_bits(gb, 2);

  298.     if (v->profile == PROFILE_COMPLEX) {

  299.         av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");

  300.     }

  301. 

  302.     if (v->profile == PROFILE_ADVANCED) {

  303.         v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;

  304.         v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;

  305.         return decode_sequence_header_adv(v, gb);

  306.     } else {

  307.         v->zz_8x4 = ff_wmv2_scantableA;

  308.         v->zz_4x8 = ff_wmv2_scantableB;

  309.         v->res_y411   = get_bits1(gb);

  310.         v->res_sprite = get_bits1(gb);

  311.         if (v->res_y411) {

  312.             av_log(avctx, AV_LOG_ERROR,

  313.                    "Old interlaced mode is not supported\n");

  314.             return -1;

  315.         }

  316.     }

  317. 

  318.     // (fps-2)/4 (->30)

  319.     v->frmrtq_postproc = get_bits(gb, 3); //common

  320.     // (bitrate-32kbps)/64kbps

  321.     v->bitrtq_postproc = get_bits(gb, 5); //common

  322.     v->s.loop_filter   = get_bits1(gb); //common

  323.     if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {

  324.         av_log(avctx, AV_LOG_ERROR,

  325.                "LOOPFILTER shall not be enabled in Simple Profile\n");

  326.     }

  327.     if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)

  328.         v->s.loop_filter = 0;

  329. 

  330.     v->res_x8          = get_bits1(gb); //reserved

  331.     v->multires        = get_bits1(gb);

  332.     v->res_fasttx      = get_bits1(gb);

  333.     if (!v->res_fasttx) {

  334.         v->vc1dsp.vc1_inv_trans_8x8    = ff_simple_idct_8;

  335.         v->vc1dsp.vc1_inv_trans_8x4    = ff_simple_idct84_add;

  336.         v->vc1dsp.vc1_inv_trans_4x8    = ff_simple_idct48_add;

  337.         v->vc1dsp.vc1_inv_trans_4x4    = ff_simple_idct44_add;

  338.         v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;

  339.         v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;

  340.         v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;

  341.         v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;

  342.     }

  343. 

  344.     v->fastuvmc        = get_bits1(gb); //common

  345.     if (!v->profile && !v->fastuvmc) {

  346.         av_log(avctx, AV_LOG_ERROR,

  347.                "FASTUVMC unavailable in Simple Profile\n");

  348.         return -1;

  349.     }

  350.     v->extended_mv     = get_bits1(gb); //common

  351.     if (!v->profile && v->extended_mv)

  352.     {

  353.         av_log(avctx, AV_LOG_ERROR,

  354.                "Extended MVs unavailable in Simple Profile\n");

  355.         return -1;

  356.     }

  357.     v->dquant          = get_bits(gb, 2); //common

  358.     v->vstransform     = get_bits1(gb); //common

  359. 

  360.     v->res_transtab    = get_bits1(gb);

  361.     if (v->res_transtab)

  362.     {

  363.         av_log(avctx, AV_LOG_ERROR,

  364.                "1 for reserved RES_TRANSTAB is forbidden\n");

  365.         return -1;

  366.     }

  367. 

  368.     v->overlap         = get_bits1(gb); //common

  369. 

  370.     v->s.resync_marker = get_bits1(gb);

  371.     v->rangered        = get_bits1(gb);

  372.     if (v->rangered && v->profile == PROFILE_SIMPLE) {

  373.         av_log(avctx, AV_LOG_INFO,

  374.                "RANGERED should be set to 0 in Simple Profile\n");

  375.     }

  376. 

  377.     v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common

  378.     v->quantizer_mode = get_bits(gb, 2); //common

  379. 

  380.     v->finterpflag = get_bits1(gb); //common

  381. 

  382.     if (v->res_sprite) {

  383.         v->s.avctx->width  = v->s.avctx->coded_width  = get_bits(gb, 11);

  384.         v->s.avctx->height = v->s.avctx->coded_height = get_bits(gb, 11);

  385.         skip_bits(gb, 5); //frame rate

  386.         v->res_x8 = get_bits1(gb);

  387.         if (get_bits1(gb)) { // something to do with DC VLC selection

  388.             av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");

  389.             return -1;

  390.         }

  391.         skip_bits(gb, 3); //slice code

  392.         v->res_rtm_flag = 0;

  393.     } else {

  394.         v->res_rtm_flag = get_bits1(gb); //reserved

  395.     }

  396.     if (!v->res_rtm_flag) {

  397. //            av_log(avctx, AV_LOG_ERROR,

  398. //                   "0 for reserved RES_RTM_FLAG is forbidden\n");

  399.         av_log(avctx, AV_LOG_ERROR,

  400.                "Old WMV3 version detected, some frames may be decoded incorrectly\n");

  401.         //return -1;

  402.     }

  403.     //TODO: figure out what they mean (always 0x402F)

  404.     if (!v->res_fasttx)

  405.         skip_bits(gb, 16);

  406.     av_log(avctx, AV_LOG_DEBUG,

  407.            "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"

  408.            "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"

  409.            "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"

  410.            "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",

  411.            v->profile, v->frmrtq_postproc, v->bitrtq_postproc,

  412.            v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,

  413.            v->rangered, v->vstransform, v->overlap, v->s.resync_marker,

  414.            v->dquant, v->quantizer_mode, avctx->max_b_frames);

  415.     return 0;

  416. }

  417. 

  418. static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)

  419. {

  420.     v->res_rtm_flag = 1;

  421.     v->level = get_bits(gb, 3);

  422.     if (v->level >= 5) {

  423.         av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);

  424.     }

  425.     v->chromaformat = get_bits(gb, 2);

  426.     if (v->chromaformat != 1) {

  427.         av_log(v->s.avctx, AV_LOG_ERROR,

  428.                "Only 4:2:0 chroma format supported\n");

  429.         return -1;

  430.     }

  431. 

  432.     // (fps-2)/4 (->30)

  433.     v->frmrtq_postproc       = get_bits(gb, 3); //common

  434.     // (bitrate-32kbps)/64kbps

  435.     v->bitrtq_postproc       = get_bits(gb, 5); //common

  436.     v->postprocflag          = get_bits1(gb);   //common

  437. 

  438.     v->s.avctx->coded_width  = (get_bits(gb, 12) + 1) << 1;

  439.     v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;

  440.     v->s.avctx->width        = v->s.avctx->coded_width;

  441.     v->s.avctx->height       = v->s.avctx->coded_height;

  442.     v->broadcast             = get_bits1(gb);

  443.     v->interlace             = get_bits1(gb);

  444.     v->tfcntrflag            = get_bits1(gb);

  445.     v->finterpflag           = get_bits1(gb);

  446.     skip_bits1(gb); // reserved

  447. 

  448.     av_log(v->s.avctx, AV_LOG_DEBUG,

  449.            "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"

  450.            "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"

  451.            "TFCTRflag=%i, FINTERPflag=%i\n",

  452.            v->level, v->frmrtq_postproc, v->bitrtq_postproc,

  453.            v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,

  454.            v->tfcntrflag, v->finterpflag);

  455. 

  456.     v->psf = get_bits1(gb);

  457.     if (v->psf) { //PsF, 6.1.13

  458.         av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");

  459.         return -1;

  460.     }

  461.     v->s.max_b_frames = v->s.avctx->max_b_frames = 7;

  462.     if (get_bits1(gb)) { //Display Info - decoding is not affected by it

  463.         int w, h, ar = 0;

  464.         av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");

  465.         w = get_bits(gb, 14) + 1;

  466.         h = get_bits(gb, 14) + 1;

  467.         av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);

  468.         if (get_bits1(gb))

  469.             ar = get_bits(gb, 4);

  470.         if (ar && ar < 14) {

  471.             v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];

  472.         } else if (ar == 15) {

  473.             w = get_bits(gb, 8) + 1;

  474.             h = get_bits(gb, 8) + 1;

  475.             v->s.avctx->sample_aspect_ratio = (AVRational){w, h};

  476.         } else {

  477.             av_reduce(&v->s.avctx->sample_aspect_ratio.num,

  478.                       &v->s.avctx->sample_aspect_ratio.den,

  479.                       v->s.avctx->height * w,

  480.                       v->s.avctx->width * h,

  481.                       1 << 30);

  482.         }

  483.         av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",

  484.                v->s.avctx->sample_aspect_ratio.num,

  485.                v->s.avctx->sample_aspect_ratio.den);

  486. 

  487.         if (get_bits1(gb)) { //framerate stuff

  488.             if (get_bits1(gb)) {

  489.                 v->s.avctx->time_base.num = 32;

  490.                 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;

  491.             } else {

  492.                 int nr, dr;

  493.                 nr = get_bits(gb, 8);

  494.                 dr = get_bits(gb, 4);

  495.                 if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {

  496.                     v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];

  497.                     v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;

  498.                 }

  499.             }

  500.             if (v->broadcast) { // Pulldown may be present

  501.                 v->s.avctx->time_base.den  *= 2;

  502.                 v->s.avctx->ticks_per_frame = 2;

  503.             }

  504.         }

  505. 

  506.         if (get_bits1(gb)) {

  507.             v->color_prim    = get_bits(gb, 8);

  508.             v->transfer_char = get_bits(gb, 8);

  509.             v->matrix_coef   = get_bits(gb, 8);

  510.         }

  511.     }

  512. 

  513.     v->hrd_param_flag = get_bits1(gb);

  514.     if (v->hrd_param_flag) {

  515.         int i;

  516.         v->hrd_num_leaky_buckets = get_bits(gb, 5);

  517.         skip_bits(gb, 4); //bitrate exponent

  518.         skip_bits(gb, 4); //buffer size exponent

  519.         for (i = 0; i < v->hrd_num_leaky_buckets; i++) {

  520.             skip_bits(gb, 16); //hrd_rate[n]

  521.             skip_bits(gb, 16); //hrd_buffer[n]

  522.         }

  523.     }

  524.     return 0;

  525. }

  526. 

  527. int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)

  528. {

  529.     int i;

  530. 

  531.     av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));

  532.     v->broken_link    = get_bits1(gb);

  533.     v->closed_entry   = get_bits1(gb);

  534.     v->panscanflag    = get_bits1(gb);

  535.     v->refdist_flag   = get_bits1(gb);

  536.     v->s.loop_filter  = get_bits1(gb);

  537.     v->fastuvmc       = get_bits1(gb);

  538.     v->extended_mv    = get_bits1(gb);

  539.     v->dquant         = get_bits(gb, 2);

  540.     v->vstransform    = get_bits1(gb);

  541.     v->overlap        = get_bits1(gb);

  542.     v->quantizer_mode = get_bits(gb, 2);

  543. 

  544.     if (v->hrd_param_flag) {

  545.         for (i = 0; i < v->hrd_num_leaky_buckets; i++) {

  546.             skip_bits(gb, 8); //hrd_full[n]

  547.         }

  548.     }

  549. 

  550.     if (get_bits1(gb)) {

  551.         avctx->width  = avctx->coded_width  = (get_bits(gb, 12) + 1) << 1;

  552.         avctx->height = avctx->coded_height = (get_bits(gb, 12) + 1) << 1;

  553.     }

  554.     if (v->extended_mv)

  555.         v->extended_dmv = get_bits1(gb);

  556.     if ((v->range_mapy_flag = get_bits1(gb))) {

  557.         av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");

  558.         v->range_mapy = get_bits(gb, 3);

  559.     }

  560.     if ((v->range_mapuv_flag = get_bits1(gb))) {

  561.         av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");

  562.         v->range_mapuv = get_bits(gb, 3);

  563.     }

  564. 

  565.     av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"

  566.            "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"

  567.            "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"

  568.            "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",

  569.            v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,

  570.            v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);

  571. 

  572.     return 0;

  573. }

  574. 

  575. int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)

  576. {

  577.     int pqindex, lowquant, status;

  578. 

  579.     if (v->finterpflag)

  580.         v->interpfrm = get_bits1(gb);

  581.     skip_bits(gb, 2); //framecnt unused

  582.     v->rangeredfrm = 0;

  583.     if (v->rangered)

  584.         v->rangeredfrm = get_bits1(gb);

  585.     v->s.pict_type = get_bits1(gb);

  586.     if (v->s.avctx->max_b_frames) {

  587.         if (!v->s.pict_type) {

  588.             if (get_bits1(gb))

  589.                 v->s.pict_type = AV_PICTURE_TYPE_I;

  590.             else

  591.                 v->s.pict_type = AV_PICTURE_TYPE_B;

  592.         } else

  593.             v->s.pict_type = AV_PICTURE_TYPE_P;

  594.     } else

  595.         v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;

  596. 

  597.     v->bi_type = 0;

  598.     if (v->s.pict_type == AV_PICTURE_TYPE_B) {

  599.         v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);

  600.         v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];

  601.         if (v->bfraction == 0) {

  602.             v->s.pict_type = AV_PICTURE_TYPE_BI;

  603.         }

  604.     }

  605.     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)

  606.         skip_bits(gb, 7); // skip buffer fullness

  607. 

  608.     if (v->parse_only)

  609.         return 0;

  610. 

  611.     /* calculate RND */

  612.     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)

  613.         v->rnd = 1;

  614.     if (v->s.pict_type == AV_PICTURE_TYPE_P)

  615.         v->rnd ^= 1;

  616. 

  617.     /* Quantizer stuff */

  618.     pqindex = get_bits(gb, 5);

  619.     if (!pqindex)

  620.         return -1;

  621.     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)

  622.         v->pq = ff_vc1_pquant_table[0][pqindex];

  623.     else

  624.         v->pq = ff_vc1_pquant_table[1][pqindex];

  625. 

  626.     v->pquantizer = 1;

  627.     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)

  628.         v->pquantizer = pqindex < 9;

  629.     if (v->quantizer_mode == QUANT_NON_UNIFORM)

  630.         v->pquantizer = 0;

  631.     v->pqindex = pqindex;

  632.     if (pqindex < 9)

  633.         v->halfpq = get_bits1(gb);

  634.     else

  635.         v->halfpq = 0;

  636.     if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)

  637.         v->pquantizer = get_bits1(gb);

  638.     v->dquantfrm = 0;

  639.     if (v->extended_mv == 1)

  640.         v->mvrange = get_unary(gb, 0, 3);

  641.     v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13

  642.     v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11

  643.     v->range_x = 1 << (v->k_x - 1);

  644.     v->range_y = 1 << (v->k_y - 1);

  645.     if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)

  646.         v->respic = get_bits(gb, 2);

  647. 

  648.     if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {

  649.         v->x8_type = get_bits1(gb);

  650.     } else

  651.         v->x8_type = 0;

  652. //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",

  653. //        (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);

  654. 

  655.     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)

  656.         v->use_ic = 0;

  657. 

  658.     switch (v->s.pict_type) {

  659.     case AV_PICTURE_TYPE_P:

  660.         if (v->pq < 5)       v->tt_index = 0;

  661.         else if (v->pq < 13) v->tt_index = 1;

  662.         else                 v->tt_index = 2;

  663. 

  664.         lowquant = (v->pq > 12) ? 0 : 1;

  665.         v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];

  666.         if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {

  667.             int scale, shift, i;

  668.             v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];

  669.             v->lumscale = get_bits(gb, 6);

  670.             v->lumshift = get_bits(gb, 6);

  671.             v->use_ic   = 1;

  672.             /* fill lookup tables for intensity compensation */

  673.             if (!v->lumscale) {

  674.                 scale = -64;

  675.                 shift = (255 - v->lumshift * 2) << 6;

  676.                 if (v->lumshift > 31)

  677.                     shift += 128 << 6;

  678.             } else {

  679.                 scale = v->lumscale + 32;

  680.                 if (v->lumshift > 31)

  681.                     shift = (v->lumshift - 64) << 6;

  682.                 else

  683.                     shift = v->lumshift << 6;

  684.             }

  685.             for (i = 0; i < 256; i++) {

  686.                 v->luty[i]  = av_clip_uint8((scale * i + shift + 32) >> 6);

  687.                 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);

  688.             }

  689.         }

  690.         v->qs_last = v->s.quarter_sample;

  691.         if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)

  692.             v->s.quarter_sample = 0;

  693.         else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {

  694.             if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)

  695.                 v->s.quarter_sample = 0;

  696.             else

  697.                 v->s.quarter_sample = 1;

  698.         } else

  699.             v->s.quarter_sample = 1;

  700.         v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));

  701. 

  702.         if ((v->mv_mode  == MV_PMODE_INTENSITY_COMP &&

  703.              v->mv_mode2 == MV_PMODE_MIXED_MV)      ||

  704.             v->mv_mode   == MV_PMODE_MIXED_MV) {

  705.             status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);

  706.             if (status < 0)

  707.                 return -1;

  708.             av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "

  709.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  710.         } else {

  711.             v->mv_type_is_raw = 0;

  712.             memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);

  713.         }

  714.         status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);

  715.         if (status < 0)

  716.             return -1;

  717.         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "

  718.                "Imode: %i, Invert: %i\n", status>>1, status&1);

  719. 

  720.         /* Hopefully this is correct for P frames */

  721.         v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables

  722.         v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];

  723. 

  724.         if (v->dquant) {

  725.             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");

  726.             vop_dquant_decoding(v);

  727.         }

  728. 

  729.         v->ttfrm = 0; //FIXME Is that so ?

  730.         if (v->vstransform) {

  731.             v->ttmbf = get_bits1(gb);

  732.             if (v->ttmbf) {

  733.                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];

  734.             }

  735.         } else {

  736.             v->ttmbf = 1;

  737.             v->ttfrm = TT_8X8;

  738.         }

  739.         break;

  740.     case AV_PICTURE_TYPE_B:

  741.         if (v->pq < 5)       v->tt_index = 0;

  742.         else if (v->pq < 13) v->tt_index = 1;

  743.         else                 v->tt_index = 2;

  744. 

  745.         v->mv_mode          = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;

  746.         v->qs_last          = v->s.quarter_sample;

  747.         v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);

  748.         v->s.mspel          = v->s.quarter_sample;

  749. 

  750.         status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);

  751.         if (status < 0)

  752.             return -1;

  753.         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "

  754.                "Imode: %i, Invert: %i\n", status>>1, status&1);

  755.         status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);

  756.         if (status < 0)

  757.             return -1;

  758.         av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "

  759.                "Imode: %i, Invert: %i\n", status>>1, status&1);

  760. 

  761.         v->s.mv_table_index = get_bits(gb, 2);

  762.         v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];

  763. 

  764.         if (v->dquant) {

  765.             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");

  766.             vop_dquant_decoding(v);

  767.         }

  768. 

  769.         v->ttfrm = 0;

  770.         if (v->vstransform) {

  771.             v->ttmbf = get_bits1(gb);

  772.             if (v->ttmbf) {

  773.                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];

  774.             }

  775.         } else {

  776.             v->ttmbf = 1;

  777.             v->ttfrm = TT_8X8;

  778.         }

  779.         break;

  780.     }

  781. 

  782.     if (!v->x8_type) {

  783.         /* AC Syntax */

  784.         v->c_ac_table_index = decode012(gb);

  785.         if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {

  786.             v->y_ac_table_index = decode012(gb);

  787.         }

  788.         /* DC Syntax */

  789.         v->s.dc_table_index = get_bits1(gb);

  790.     }

  791. 

  792.     if (v->s.pict_type == AV_PICTURE_TYPE_BI) {

  793.         v->s.pict_type = AV_PICTURE_TYPE_B;

  794.         v->bi_type     = 1;

  795.     }

  796.     return 0;

  797. }

  798. 

  799. /* fill lookup tables for intensity compensation */

  800. #define INIT_LUT(lumscale, lumshift, luty, lutuv)   \

  801.     if (!lumscale) {                                \

  802.         scale = -64;                                \

  803.         shift = (255 - lumshift * 2) << 6;          \

  804.         if (lumshift > 31)                          \

  805.             shift += 128 << 6;                      \

  806.     } else {                                        \

  807.         scale = lumscale + 32;                      \

  808.         if (lumshift > 31)                          \

  809.             shift = (lumshift - 64) << 6;           \

  810.         else                                        \

  811.             shift = lumshift << 6;                  \

  812.     }                                               \

  813.     for (i = 0; i < 256; i++) {                     \

  814.         luty[i]  = av_clip_uint8((scale * i + shift + 32) >> 6);           \

  815.         lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);  \

  816.     }

  817. 

  818. int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)

  819. {

  820.     int pqindex, lowquant;

  821.     int status;

  822.     int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */

  823.     int scale, shift, i; /* for initializing LUT for intensity compensation */

  824. 

  825.     v->p_frame_skipped = 0;

  826.     if (v->second_field) {

  827.         v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;

  828.         if (v->fptype & 4)

  829.             v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;

  830.         v->s.current_picture_ptr->f.pict_type = v->s.pict_type;

  831.         if (!v->pic_header_flag)

  832.             goto parse_common_info;

  833.     }

  834. 

  835.     v->field_mode = 0;

  836.     if (v->interlace) {

  837.         v->fcm = decode012(gb);

  838.         if (v->fcm) {

  839.             if (v->fcm == ILACE_FIELD)

  840.                 v->field_mode = 1;

  841.             if (!v->warn_interlaced++)

  842.                 av_log(v->s.avctx, AV_LOG_ERROR,

  843.                        "Interlaced frames/fields support is incomplete\n");

  844.         }

  845.     } else {

  846.         v->fcm = PROGRESSIVE;

  847.     }

  848. 

  849.     if (v->field_mode) {

  850.         v->fptype = get_bits(gb, 3);

  851.         v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;

  852.         if (v->fptype & 4) // B-picture

  853.             v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;

  854.     } else {

  855.         switch (get_unary(gb, 0, 4)) {

  856.         case 0:

  857.             v->s.pict_type = AV_PICTURE_TYPE_P;

  858.             break;

  859.         case 1:

  860.             v->s.pict_type = AV_PICTURE_TYPE_B;

  861.             break;

  862.         case 2:

  863.             v->s.pict_type = AV_PICTURE_TYPE_I;

  864.             break;

  865.         case 3:

  866.             v->s.pict_type = AV_PICTURE_TYPE_BI;

  867.             break;

  868.         case 4:

  869.             v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic

  870.             v->p_frame_skipped = 1;

  871.             break;

  872.         }

  873.     }

  874.     if (v->tfcntrflag)

  875.         skip_bits(gb, 8);

  876.     if (v->broadcast) {

  877.         if (!v->interlace || v->psf) {

  878.             v->rptfrm = get_bits(gb, 2);

  879.         } else {

  880.             v->tff = get_bits1(gb);

  881.             v->rff = get_bits1(gb);

  882.         }

  883.     }

  884.     if (v->panscanflag) {

  885.         av_log_missing_feature(v->s.avctx, "Pan-scan", 0);

  886.         //...

  887.     }

  888.     if (v->p_frame_skipped) {

  889.         return 0;

  890.     }

  891.     v->rnd = get_bits1(gb);

  892.     if (v->interlace)

  893.         v->uvsamp = get_bits1(gb);

  894.     if (v->field_mode) {

  895.         if (!v->refdist_flag)

  896.             v->refdist = 0;

  897.         else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {

  898.             v->refdist = get_bits(gb, 2);

  899.             if (v->refdist == 3)

  900.                 v->refdist += get_unary(gb, 0, 16);

  901.         }

  902.         if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {

  903.             v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);

  904.             v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];

  905.             v->frfd = (v->bfraction * v->refdist) >> 8;

  906.             v->brfd = v->refdist - v->frfd - 1;

  907.             if (v->brfd < 0)

  908.                 v->brfd = 0;

  909.         }

  910.         goto parse_common_info;

  911.     }

  912.     if (v->fcm == PROGRESSIVE) {

  913.         if (v->finterpflag)

  914.             v->interpfrm = get_bits1(gb);

  915.         if (v->s.pict_type == AV_PICTURE_TYPE_B) {

  916.             v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);

  917.             v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];

  918.             if (v->bfraction == 0) {

  919.                 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */

  920.             }

  921.         }

  922.     }

  923. 

  924.     parse_common_info:

  925.     if (v->field_mode)

  926.         v->cur_field_type = !(v->tff ^ v->second_field);

  927.     pqindex = get_bits(gb, 5);

  928.     if (!pqindex)

  929.         return -1;

  930.     v->pqindex = pqindex;

  931.     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)

  932.         v->pq = ff_vc1_pquant_table[0][pqindex];

  933.     else

  934.         v->pq = ff_vc1_pquant_table[1][pqindex];

  935. 

  936.     v->pquantizer = 1;

  937.     if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)

  938.         v->pquantizer = pqindex < 9;

  939.     if (v->quantizer_mode == QUANT_NON_UNIFORM)

  940.         v->pquantizer = 0;

  941.     v->pqindex = pqindex;

  942.     if (pqindex < 9)

  943.         v->halfpq = get_bits1(gb);

  944.     else

  945.         v->halfpq = 0;

  946.     if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)

  947.         v->pquantizer = get_bits1(gb);

  948.     if (v->postprocflag)

  949.         v->postproc = get_bits(gb, 2);

  950. 

  951.     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)

  952.         v->use_ic = 0;

  953. 

  954.     if (v->parse_only)

  955.         return 0;

  956. 

  957.     switch (v->s.pict_type) {

  958.     case AV_PICTURE_TYPE_I:

  959.     case AV_PICTURE_TYPE_BI:

  960.         if (v->fcm == ILACE_FRAME) { //interlace frame picture

  961.             status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);

  962.             if (status < 0)

  963.                 return -1;

  964.             av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "

  965.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  966.         }

  967.         status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);

  968.         if (status < 0)

  969.             return -1;

  970.         av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "

  971.                "Imode: %i, Invert: %i\n", status>>1, status&1);

  972.         v->condover = CONDOVER_NONE;

  973.         if (v->overlap && v->pq <= 8) {

  974.             v->condover = decode012(gb);

  975.             if (v->condover == CONDOVER_SELECT) {

  976.                 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);

  977.                 if (status < 0)

  978.                     return -1;

  979.                 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "

  980.                        "Imode: %i, Invert: %i\n", status>>1, status&1);

  981.             }

  982.         }

  983.         break;

  984.     case AV_PICTURE_TYPE_P:

  985.         if (v->field_mode) {

  986.             v->numref = get_bits1(gb);

  987.             if (!v->numref) {

  988.                 v->reffield          = get_bits1(gb);

  989.                 v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;

  990.             }

  991.         }

  992.         if (v->extended_mv)

  993.             v->mvrange = get_unary(gb, 0, 3);

  994.         else

  995.             v->mvrange = 0;

  996.         if (v->interlace) {

  997.             if (v->extended_dmv)

  998.                 v->dmvrange = get_unary(gb, 0, 3);

  999.             else

  1000.                 v->dmvrange = 0;

  1001.             if (v->fcm == ILACE_FRAME) { // interlaced frame picture

  1002.                 v->fourmvswitch = get_bits1(gb);

  1003.                 v->intcomp      = get_bits1(gb);

  1004.                 if (v->intcomp) {

  1005.                     v->lumscale = get_bits(gb, 6);

  1006.                     v->lumshift = get_bits(gb, 6);

  1007.                     INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);

  1008.                 }

  1009.                 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);

  1010.                 av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "

  1011.                        "Imode: %i, Invert: %i\n", status>>1, status&1);

  1012.                 mbmodetab = get_bits(gb, 2);

  1013.                 if (v->fourmvswitch)

  1014.                     v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];

  1015.                 else

  1016.                     v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];

  1017.                 imvtab         = get_bits(gb, 2);

  1018.                 v->imv_vlc     = &ff_vc1_1ref_mvdata_vlc[imvtab];

  1019.                 // interlaced p-picture cbpcy range is [1, 63]

  1020.                 icbptab        = get_bits(gb, 3);

  1021.                 v->cbpcy_vlc   = &ff_vc1_icbpcy_vlc[icbptab];

  1022.                 twomvbptab     = get_bits(gb, 2);

  1023.                 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];

  1024.                 if (v->fourmvswitch) {

  1025.                     fourmvbptab     = get_bits(gb, 2);

  1026.                     v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];

  1027.                 }

  1028.             }

  1029.         }

  1030.         v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13

  1031.         v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11

  1032.         v->range_x = 1 << (v->k_x - 1);

  1033.         v->range_y = 1 << (v->k_y - 1);

  1034. 

  1035.         if (v->pq < 5)

  1036.             v->tt_index = 0;

  1037.         else if (v->pq < 13)

  1038.             v->tt_index = 1;

  1039.         else

  1040.             v->tt_index = 2;

  1041.         if (v->fcm != ILACE_FRAME) {

  1042.             int mvmode;

  1043.             mvmode     = get_unary(gb, 1, 4);

  1044.             lowquant   = (v->pq > 12) ? 0 : 1;

  1045.             v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];

  1046.             if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {

  1047.                 int mvmode2;

  1048.                 mvmode2 = get_unary(gb, 1, 3);

  1049.                 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];

  1050.                 if (v->field_mode)

  1051.                     v->intcompfield = decode210(gb);

  1052.                 v->lumscale = get_bits(gb, 6);

  1053.                 v->lumshift = get_bits(gb, 6);

  1054.                 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);

  1055.                 if ((v->field_mode) && !v->intcompfield) {

  1056.                     v->lumscale2 = get_bits(gb, 6);

  1057.                     v->lumshift2 = get_bits(gb, 6);

  1058.                     INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);

  1059.                 }

  1060.                 v->use_ic = 1;

  1061.             }

  1062.             v->qs_last = v->s.quarter_sample;

  1063.             if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)

  1064.                 v->s.quarter_sample = 0;

  1065.             else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {

  1066.                 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)

  1067.                     v->s.quarter_sample = 0;

  1068.                 else

  1069.                     v->s.quarter_sample = 1;

  1070.             } else

  1071.                 v->s.quarter_sample = 1;

  1072.             v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN

  1073.                            || (v->mv_mode == MV_PMODE_INTENSITY_COMP

  1074.                                && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));

  1075.         }

  1076.         if (v->fcm == PROGRESSIVE) { // progressive

  1077.             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&

  1078.                  v->mv_mode2 == MV_PMODE_MIXED_MV)

  1079.                 || v->mv_mode == MV_PMODE_MIXED_MV) {

  1080.                 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);

  1081.                 if (status < 0)

  1082.                     return -1;

  1083.                 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "

  1084.                        "Imode: %i, Invert: %i\n", status>>1, status&1);

  1085.             } else {

  1086.                 v->mv_type_is_raw = 0;

  1087.                 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);

  1088.             }

  1089.             status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);

  1090.             if (status < 0)

  1091.                 return -1;

  1092.             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "

  1093.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  1094. 

  1095.             /* Hopefully this is correct for P frames */

  1096.             v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables

  1097.             v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];

  1098.         } else if (v->fcm == ILACE_FRAME) { // frame interlaced

  1099.             v->qs_last          = v->s.quarter_sample;

  1100.             v->s.quarter_sample = 1;

  1101.             v->s.mspel          = 1;

  1102.         } else {    // field interlaced

  1103.             mbmodetab = get_bits(gb, 3);

  1104.             imvtab = get_bits(gb, 2 + v->numref);

  1105.             if (!v->numref)

  1106.                 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];

  1107.             else

  1108.                 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];

  1109.             icbptab = get_bits(gb, 3);

  1110.             v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];

  1111.             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&

  1112.                 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {

  1113.                 fourmvbptab     = get_bits(gb, 2);

  1114.                 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];

  1115.                 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];

  1116.             } else {

  1117.                 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];

  1118.             }

  1119.         }

  1120.         if (v->dquant) {

  1121.             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");

  1122.             vop_dquant_decoding(v);

  1123.         }

  1124. 

  1125.         v->ttfrm = 0; //FIXME Is that so ?

  1126.         if (v->vstransform) {

  1127.             v->ttmbf = get_bits1(gb);

  1128.             if (v->ttmbf) {

  1129.                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];

  1130.             }

  1131.         } else {

  1132.             v->ttmbf = 1;

  1133.             v->ttfrm = TT_8X8;

  1134.         }

  1135.         break;

  1136.     case AV_PICTURE_TYPE_B:

  1137.         // TODO: implement interlaced frame B picture decoding

  1138.         if (v->fcm == ILACE_FRAME)

  1139.             return -1;

  1140.         if (v->extended_mv)

  1141.             v->mvrange = get_unary(gb, 0, 3);

  1142.         else

  1143.             v->mvrange = 0;

  1144.         v->k_x     = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13

  1145.         v->k_y     = v->mvrange + 8; //k_y can be 8 9 10 11

  1146.         v->range_x = 1 << (v->k_x - 1);

  1147.         v->range_y = 1 << (v->k_y - 1);

  1148. 

  1149.         if (v->pq < 5)

  1150.             v->tt_index = 0;

  1151.         else if (v->pq < 13)

  1152.             v->tt_index = 1;

  1153.         else

  1154.             v->tt_index = 2;

  1155. 

  1156.         if (v->field_mode) {

  1157.             int mvmode;

  1158.             if (v->extended_dmv)

  1159.                 v->dmvrange = get_unary(gb, 0, 3);

  1160.             mvmode = get_unary(gb, 1, 3);

  1161.             lowquant = (v->pq > 12) ? 0 : 1;

  1162.             v->mv_mode          = ff_vc1_mv_pmode_table2[lowquant][mvmode];

  1163.             v->qs_last          = v->s.quarter_sample;

  1164.             v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);

  1165.             v->s.mspel          = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);

  1166.             status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);

  1167.             if (status < 0)

  1168.                 return -1;

  1169.             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "

  1170.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  1171.             mbmodetab = get_bits(gb, 3);

  1172.             if (v->mv_mode == MV_PMODE_MIXED_MV)

  1173.                 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];

  1174.             else

  1175.                 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];

  1176.             imvtab       = get_bits(gb, 3);

  1177.             v->imv_vlc   = &ff_vc1_2ref_mvdata_vlc[imvtab];

  1178.             icbptab      = get_bits(gb, 3);

  1179.             v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];

  1180.             if (v->mv_mode == MV_PMODE_MIXED_MV) {

  1181.                 fourmvbptab     = get_bits(gb, 2);

  1182.                 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];

  1183.             }

  1184.             v->numref = 1; // interlaced field B pictures are always 2-ref

  1185.         } else {

  1186.             v->mv_mode          = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;

  1187.             v->qs_last          = v->s.quarter_sample;

  1188.             v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);

  1189.             v->s.mspel          = v->s.quarter_sample;

  1190.             status              = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);

  1191.             if (status < 0)

  1192.                 return -1;

  1193.             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "

  1194.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  1195.             status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);

  1196.             if (status < 0)

  1197.                 return -1;

  1198.             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "

  1199.                    "Imode: %i, Invert: %i\n", status>>1, status&1);

  1200.             v->s.mv_table_index = get_bits(gb, 2);

  1201.             v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];

  1202.         }

  1203. 

  1204.         if (v->dquant) {

  1205.             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");

  1206.             vop_dquant_decoding(v);

  1207.         }

  1208. 

  1209.         v->ttfrm = 0;

  1210.         if (v->vstransform) {

  1211.             v->ttmbf = get_bits1(gb);

  1212.             if (v->ttmbf) {

  1213.                 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];

  1214.             }

  1215.         } else {

  1216.             v->ttmbf = 1;

  1217.             v->ttfrm = TT_8X8;

  1218.         }

  1219.         break;

  1220.     }

  1221. 

  1222.     /* AC Syntax */

  1223.     v->c_ac_table_index = decode012(gb);

  1224.     if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {

  1225.         v->y_ac_table_index = decode012(gb);

  1226.     }

  1227.     /* DC Syntax */

  1228.     v->s.dc_table_index = get_bits1(gb);

  1229.     if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)

  1230.         && v->dquant) {

  1231.         av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");

  1232.         vop_dquant_decoding(v);

  1233.     }

  1234. 

  1235.     v->bi_type = 0;

  1236.     if (v->s.pict_type == AV_PICTURE_TYPE_BI) {

  1237.         v->s.pict_type = AV_PICTURE_TYPE_B;

  1238.         v->bi_type = 1;

  1239.     }

  1240.     return 0;

  1241. }

  1242. 

  1243. static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {

  1244. {

  1245. { 0x0001,  2}, { 0x0005,  3}, { 0x000D,  4}, { 0x0012,  5}, { 0x000E,  6}, { 0x0015,  7},

  1246. { 0x0013,  8}, { 0x003F,  8}, { 0x004B,  9}, { 0x011F,  9}, { 0x00B8, 10}, { 0x03E3, 10},

  1247. { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},

  1248. { 0x3EAE, 14}, { 0x0000,  4}, { 0x0010,  5}, { 0x0008,  7}, { 0x0020,  8}, { 0x0029,  9},

  1249. { 0x01F4,  9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},

  1250. { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003,  5}, { 0x0011,  7},

  1251. { 0x00C4,  8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},

  1252. { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013,  5}, { 0x0078,  7},

  1253. { 0x0069,  9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},

  1254. { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C,  6}, { 0x0024,  9}, { 0x0094, 11},

  1255. { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D,  6}, { 0x0053,  9}, { 0x01A0, 11},

  1256. { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013,  7}, { 0x007C,  9}, { 0x07C1, 11}, { 0x04AC, 14},

  1257. { 0x001B,  7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079,  7}, { 0x03E1, 10},

  1258. { 0x02D4, 13}, { 0x2306, 14}, { 0x0021,  8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},

  1259. { 0x0035,  8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5,  8}, { 0x0174, 11}, { 0x0785, 13},

  1260. { 0x0048,  9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C,  9}, { 0x00FA, 10}, { 0x07D6, 11},

  1261. { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},

  1262. { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},

  1263. { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},

  1264. { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E,  4},

  1265. { 0x0045,  7}, { 0x01F3,  9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019,  5},

  1266. { 0x0028,  9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030,  6}, { 0x00A2, 10},

  1267. { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F,  6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},

  1268. { 0x0044,  7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063,  7}, { 0x03C3, 12}, { 0x0015,  8},

  1269. { 0x08F6, 12}, { 0x0017,  8}, { 0x0498, 13}, { 0x002C,  8}, { 0x07B2, 13}, { 0x002F,  8},

  1270. { 0x1F54, 13}, { 0x008D,  8}, { 0x07BD, 13}, { 0x008E,  8}, { 0x1182, 13}, { 0x00FB,  8},

  1271. { 0x050B, 13}, { 0x002D,  8}, { 0x07C0, 11}, { 0x0079,  9}, { 0x1F5F, 13}, { 0x007A,  9},

  1272. { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},

  1273. { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},

  1274. { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},

  1275. { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A,  9}

  1276. },

  1277. {

  1278. { 0x0000,  3}, { 0x0003,  4}, { 0x000B,  5}, { 0x0014,  6}, { 0x003F,  6}, { 0x005D,  7},

  1279. { 0x00A2,  8}, { 0x00AC,  9}, { 0x016E,  9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},

  1280. { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},

  1281. { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004,  4},

  1282. { 0x001E,  5}, { 0x0042,  7}, { 0x00B6,  8}, { 0x0173,  9}, { 0x0395, 10}, { 0x072E, 11},

  1283. { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005,  5}, { 0x0040,  7},

  1284. { 0x0049,  9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},

  1285. { 0x0018,  5}, { 0x0025,  8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},

  1286. { 0x139C, 15}, { 0x0029,  6}, { 0x004F,  9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},

  1287. { 0x0038,  6}, { 0x010E,  9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058,  7},

  1288. { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023,  8}, { 0x02E3, 10}, { 0x04E5, 13},

  1289. { 0x2E40, 14}, { 0x00A1,  8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083,  8}, { 0x013A, 11},

  1290. { 0x1721, 13}, { 0x0044,  9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},

  1291. { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},

  1292. { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},

  1293. { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},

  1294. { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003,  3}, { 0x002A,  6}, { 0x00E4,  8},

  1295. { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},

  1296. { 0x0009,  4}, { 0x0054,  8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D,  4},

  1297. { 0x00AD,  9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011,  5}, { 0x016B,  9}, { 0x0B7F, 12},

  1298. { 0x51A4, 15}, { 0x0019,  5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D,  5}, { 0x0394, 10},

  1299. { 0x28D3, 14}, { 0x002B,  6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F,  6}, { 0x0247, 12},

  1300. { 0x0010,  7}, { 0x0A35, 12}, { 0x003E,  6}, { 0x0B7A, 12}, { 0x0059,  7}, { 0x105E, 13},

  1301. { 0x0026,  8}, { 0x09CF, 14}, { 0x0055,  8}, { 0x1CB5, 13}, { 0x0057,  8}, { 0x0E5B, 12},

  1302. { 0x00A0,  8}, { 0x1468, 13}, { 0x0170,  9}, { 0x0090, 10}, { 0x01CE,  9}, { 0x021A, 10},

  1303. { 0x0218, 10}, { 0x0168,  9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},

  1304. { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},

  1305. { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},

  1306. { 0x0169,  9}

  1307. },

  1308. {

  1309. { 0x0001,  2}, { 0x0006,  3}, { 0x000F,  4}, { 0x0016,  5}, { 0x0020,  6}, { 0x0018,  7},

  1310. { 0x0008,  8}, { 0x009A,  8}, { 0x0056,  9}, { 0x013E,  9}, { 0x00F0, 10}, { 0x03A5, 10},

  1311. { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001,  4}, { 0x0011,  5},

  1312. { 0x0002,  7}, { 0x000B,  8}, { 0x0012,  9}, { 0x01D6,  9}, { 0x027E, 10}, { 0x0191, 11},

  1313. { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004,  5}, { 0x0014,  7}, { 0x009E,  8},

  1314. { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017,  5},

  1315. { 0x004E,  7}, { 0x005E,  9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},

  1316. { 0x000E,  6}, { 0x00E1,  8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B,  6},

  1317. { 0x001C,  9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006,  7}, { 0x007A,  9}, { 0x0190, 11},

  1318. { 0x0137, 13}, { 0x001B,  7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071,  7}, { 0x00D7, 10},

  1319. { 0x09BF, 12}, { 0x0007,  8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034,  8}, { 0x0265, 10},

  1320. { 0x009F, 12}, { 0x00E0,  8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015,  9}, { 0x017D, 11},

  1321. { 0x0EBB, 12}, { 0x0014,  9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},

  1322. { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},

  1323. { 0x013A, 13}, { 0x000A,  4}, { 0x0042,  7}, { 0x01D3,  9}, { 0x04DD, 11}, { 0x0012,  5},

  1324. { 0x00E8,  8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039,  6}, { 0x0264, 10}, { 0x0EBA, 12},

  1325. { 0x0000,  7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F,  7}, { 0x04DE, 11}, { 0x0043,  7},

  1326. { 0x04DC, 11}, { 0x0003,  8}, { 0x03CB, 12}, { 0x0006,  8}, { 0x099E, 12}, { 0x002A,  8},

  1327. { 0x05F1, 13}, { 0x000F,  8}, { 0x09FE, 12}, { 0x0033,  8}, { 0x09FF, 12}, { 0x0098,  8},

  1328. { 0x099F, 12}, { 0x00EA,  8}, { 0x013C, 13}, { 0x002E,  8}, { 0x0192, 11}, { 0x0136,  9},

  1329. { 0x006A,  9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},

  1330. { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},

  1331. { 0x0016,  7}

  1332. },

  1333. {

  1334. { 0x0004,  3}, { 0x0014,  5}, { 0x0017,  7}, { 0x007F,  8}, { 0x0154,  9}, { 0x01F2, 10},

  1335. { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},

  1336. { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B,  4}, { 0x0037,  7}, { 0x0062,  9}, { 0x0007, 11},

  1337. { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007,  5},

  1338. { 0x006D,  8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002,  6}, { 0x0061,  9},

  1339. { 0x0055, 12}, { 0x01DF, 14}, { 0x001A,  6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},

  1340. { 0x001E,  6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006,  7}, { 0x0004, 11},

  1341. { 0x02F8, 13}, { 0x0019,  7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057,  7}, { 0x0182, 11},

  1342. { 0x2AA2, 14}, { 0x0004,  8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D,  8}, { 0x0164, 12},

  1343. { 0x076D, 15}, { 0x0002,  9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD,  8}, { 0x0060, 12},

  1344. { 0x0C67, 14}, { 0x001C,  9}, { 0x00EE, 13}, { 0x0003,  9}, { 0x02CF, 13}, { 0x00D9,  9},

  1345. { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},

  1346. { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},

  1347. { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003,  2}, { 0x0054,  7}, { 0x02AB, 10},

  1348. { 0x0016, 13}, { 0x05F7, 14}, { 0x0005,  4}, { 0x00F8,  9}, { 0x0AA9, 12}, { 0x005F, 15},

  1349. { 0x0004,  4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004,  5}, { 0x0077, 11}, { 0x076C, 15},

  1350. { 0x000E,  5}, { 0x000A, 12}, { 0x000C,  5}, { 0x0562, 11}, { 0x0004,  6}, { 0x031C, 12},

  1351. { 0x0006,  6}, { 0x00C8, 13}, { 0x000D,  6}, { 0x01DA, 13}, { 0x0007,  6}, { 0x00C9, 13},

  1352. { 0x0001,  7}, { 0x002E, 14}, { 0x0014,  7}, { 0x1596, 13}, { 0x000A,  7}, { 0x0AC2, 12},

  1353. { 0x0016,  7}, { 0x015B, 14}, { 0x0015,  7}, { 0x015A, 14}, { 0x000F,  8}, { 0x005E, 15},

  1354. { 0x007E,  8}, { 0x00AB,  8}, { 0x002D,  9}, { 0x00D8,  9}, { 0x000B,  9}, { 0x0014, 10},

  1355. { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E,  9},

  1356. { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},

  1357. { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},

  1358. { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D,  9}

  1359. },

  1360. {

  1361. { 0x0002,  2}, { 0x0006,  3}, { 0x000F,  4}, { 0x000D,  5}, { 0x000C,  5}, { 0x0015,  6},

  1362. { 0x0013,  6}, { 0x0012,  6}, { 0x0017,  7}, { 0x001F,  8}, { 0x001E,  8}, { 0x001D,  8},

  1363. { 0x0025,  9}, { 0x0024,  9}, { 0x0023,  9}, { 0x0021,  9}, { 0x0021, 10}, { 0x0020, 10},

  1364. { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},

  1365. { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E,  4}, { 0x0014,  6}, { 0x0016,  7},

  1366. { 0x001C,  8}, { 0x0020,  9}, { 0x001F,  9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},

  1367. { 0x0055, 12}, { 0x000B,  5}, { 0x0015,  7}, { 0x001E,  9}, { 0x000C, 10}, { 0x0056, 12},

  1368. { 0x0011,  6}, { 0x001B,  8}, { 0x001D,  9}, { 0x000B, 10}, { 0x0010,  6}, { 0x0022,  9},

  1369. { 0x000A, 10}, { 0x000D,  6}, { 0x001C,  9}, { 0x0008, 10}, { 0x0012,  7}, { 0x001B,  9},

  1370. { 0x0054, 12}, { 0x0014,  7}, { 0x001A,  9}, { 0x0057, 12}, { 0x0019,  8}, { 0x0009, 10},

  1371. { 0x0018,  8}, { 0x0023, 11}, { 0x0017,  8}, { 0x0019,  9}, { 0x0018,  9}, { 0x0007, 10},

  1372. { 0x0058, 12}, { 0x0007,  4}, { 0x000C,  6}, { 0x0016,  8}, { 0x0017,  9}, { 0x0006, 10},

  1373. { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F,  6}, { 0x0016,  9}, { 0x0005, 10},

  1374. { 0x000E,  6}, { 0x0004, 10}, { 0x0011,  7}, { 0x0024, 11}, { 0x0010,  7}, { 0x0025, 11},

  1375. { 0x0013,  7}, { 0x005A, 12}, { 0x0015,  8}, { 0x005B, 12}, { 0x0014,  8}, { 0x0013,  8},

  1376. { 0x001A,  8}, { 0x0015,  9}, { 0x0014,  9}, { 0x0013,  9}, { 0x0012,  9}, { 0x0011,  9},

  1377. { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},

  1378. { 0x0003,  7}

  1379. },

  1380. {

  1381. { 0x0002,  2}, { 0x000F,  4}, { 0x0015,  6}, { 0x0017,  7}, { 0x001F,  8}, { 0x0025,  9},

  1382. { 0x0024,  9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},

  1383. { 0x0006,  3}, { 0x0014,  6}, { 0x001E,  8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},

  1384. { 0x000E,  4}, { 0x001D,  8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D,  5}, { 0x0023,  9},

  1385. { 0x000D, 10}, { 0x000C,  5}, { 0x0022,  9}, { 0x0052, 12}, { 0x000B,  5}, { 0x000C, 10},

  1386. { 0x0053, 12}, { 0x0013,  6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012,  6}, { 0x000A, 10},

  1387. { 0x0011,  6}, { 0x0009, 10}, { 0x0010,  6}, { 0x0008, 10}, { 0x0016,  7}, { 0x0055, 12},

  1388. { 0x0015,  7}, { 0x0014,  7}, { 0x001C,  8}, { 0x001B,  8}, { 0x0021,  9}, { 0x0020,  9},

  1389. { 0x001F,  9}, { 0x001E,  9}, { 0x001D,  9}, { 0x001C,  9}, { 0x001B,  9}, { 0x001A,  9},

  1390. { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007,  4}, { 0x0019,  9},

  1391. { 0x0005, 11}, { 0x000F,  6}, { 0x0004, 11}, { 0x000E,  6}, { 0x000D,  6}, { 0x000C,  6},

  1392. { 0x0013,  7}, { 0x0012,  7}, { 0x0011,  7}, { 0x0010,  7}, { 0x001A,  8}, { 0x0019,  8},

  1393. { 0x0018,  8}, { 0x0017,  8}, { 0x0016,  8}, { 0x0015,  8}, { 0x0014,  8}, { 0x0013,  8},

  1394. { 0x0018,  9}, { 0x0017,  9}, { 0x0016,  9}, { 0x0015,  9}, { 0x0014,  9}, { 0x0013,  9},

  1395. { 0x0012,  9}, { 0x0011,  9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},

  1396. { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},

  1397. { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},

  1398. { 0x0003,  7}

  1399. },

  1400. {

  1401. { 0x0000,  2}, { 0x0003,  3}, { 0x000D,  4}, { 0x0005,  4}, { 0x001C,  5}, { 0x0016,  5},

  1402. { 0x003F,  6}, { 0x003A,  6}, { 0x002E,  6}, { 0x0022,  6}, { 0x007B,  7}, { 0x0067,  7},

  1403. { 0x005F,  7}, { 0x0047,  7}, { 0x0026,  7}, { 0x00EF,  8}, { 0x00CD,  8}, { 0x00C1,  8},

  1404. { 0x00A9,  8}, { 0x004F,  8}, { 0x01F2,  9}, { 0x01DD,  9}, { 0x0199,  9}, { 0x0185,  9},

  1405. { 0x015D,  9}, { 0x011B,  9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},

  1406. { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},

  1407. { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},

  1408. { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},

  1409. { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},

  1410. { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009,  4}, { 0x0010,  5}, { 0x0029,  6}, { 0x0062,  7},

  1411. { 0x00F3,  8}, { 0x00AD,  8}, { 0x01E5,  9}, { 0x0179,  9}, { 0x009C,  9}, { 0x03B1, 10},

  1412. { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},

  1413. { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008,  5}, { 0x0063,  7},

  1414. { 0x00AF,  8}, { 0x017B,  9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},

  1415. { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028,  6}, { 0x00C3,  8}, { 0x0151,  9}, { 0x02A1, 10},

  1416. { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065,  7}, { 0x01DA,  9}, { 0x02AF, 10},

  1417. { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025,  7}, { 0x0118,  9}, { 0x0646, 11},

  1418. { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9,  8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},

  1419. { 0x0048,  8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180,  9}, { 0x0465, 11}, { 0x1905, 13},

  1420. { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},

  1421. { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},

  1422. { 0x0078,  7}, { 0x0155,  9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA,  8}, { 0x07DC, 11},

  1423. { 0x1907, 13}, { 0x00AC,  8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6,  9}, { 0x0AE2, 12},

  1424. { 0x01DC,  9}, { 0x04ED, 12}, { 0x0184,  9}, { 0x1904, 13}, { 0x0156,  9}, { 0x09D9, 13},

  1425. { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},

  1426. { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},

  1427. { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},

  1428. { 0x007A,  7}

  1429. },

  1430. {

  1431. { 0x0002,  2}, { 0x0000,  3}, { 0x001E,  5}, { 0x0004,  5}, { 0x0012,  6}, { 0x0070,  7},

  1432. { 0x001A,  7}, { 0x005F,  8}, { 0x0047,  8}, { 0x01D3,  9}, { 0x00B5,  9}, { 0x0057,  9},

  1433. { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},

  1434. { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},

  1435. { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},

  1436. { 0x08C0, 13}, { 0x055D, 13}, { 0x0003,  3}, { 0x000A,  5}, { 0x0077,  7}, { 0x00E5,  8},

  1437. { 0x01D9,  9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},

  1438. { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C,  4}, { 0x007D,  7}, { 0x0044,  8},

  1439. { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B,  5},

  1440. { 0x00E2,  8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007,  5},

  1441. { 0x01D8,  9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035,  6}, { 0x03E1, 10},

  1442. { 0x059C, 12}, { 0x38C3, 14}, { 0x000C,  6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},

  1443. { 0x0068,  7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020,  7}, { 0x0F90, 12}, { 0x7CF6, 15},

  1444. { 0x00E8,  8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045,  8}, { 0x0B3A, 13}, { 0x01F1,  9},

  1445. { 0x3B46, 14}, { 0x01A7,  9}, { 0x1676, 14}, { 0x0056,  9}, { 0x692A, 15}, { 0x038D, 10},

  1446. { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},

  1447. { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},

  1448. { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},

  1449. { 0x055F, 13}, { 0x003F,  6}, { 0x006D,  9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013,  6},

  1450. { 0x0119, 10}, { 0x0B66, 13}, { 0x000B,  6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075,  7},

  1451. { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E,  7}, { 0x1F22, 13}, { 0x0021,  7}, { 0x054F, 13},

  1452. { 0x0014,  7}, { 0x3A44, 14}, { 0x00E4,  8}, { 0x7CF7, 15}, { 0x005E,  8}, { 0x7185, 15},

  1453. { 0x0037,  8}, { 0x2C73, 15}, { 0x01DB,  9}, { 0x59DD, 16}, { 0x01C7,  9}, { 0x692B, 15},

  1454. { 0x01A6,  9}, { 0x58E5, 16}, { 0x00B4,  9}, { 0x1F3D0, 17}, { 0x00B0,  9}, { 0xB1C9, 17},

  1455. { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},

  1456. { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},

  1457. { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},

  1458. { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},

  1459. { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},

  1460. { 0x0073,  7}

  1461. }

  1462. };

  1463. 

  1464. static const uint16_t vlc_offs[] = {

  1465.         0,   520,   552,   616,  1128,  1160,  1224,  1740,  1772,  1836,  1900,  2436,

  1466.      2986,  3050,  3610,  4154,  4218,  4746,  5326,  5390,  5902,  6554,  7658,  8342,

  1467.      9304,  9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,

  1468.     20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,

  1469.     27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,

  1470.     29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,

  1471.     31714, 31746, 31778, 32306, 32340, 32372

  1472. };

  1473. 

  1474. /**

  1475.  * Init VC-1 specific tables and VC1Context members

  1476.  * @param v The VC1Context to initialize

  1477.  * @return Status

  1478.  */

  1479. int ff_vc1_init_common(VC1Context *v)

  1480. {

  1481.     static int done = 0;

  1482.     int i = 0;

  1483.     static VLC_TYPE vlc_table[32372][2];

  1484. 

  1485.     v->hrd_rate = v->hrd_buffer = NULL;

  1486. 

  1487.     /* VLC tables */

  1488.     if (!done) {

  1489.         INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,

  1490.                         ff_vc1_bfraction_bits, 1, 1,

  1491.                         ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);

  1492.         INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,

  1493.                         ff_vc1_norm2_bits, 1, 1,

  1494.                         ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);

  1495.         INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,

  1496.                         ff_vc1_norm6_bits, 1, 1,

  1497.                         ff_vc1_norm6_codes, 2, 2, 556);

  1498.         INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,

  1499.                         ff_vc1_imode_bits, 1, 1,

  1500.                         ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);

  1501.         for (i = 0; i < 3; i++) {

  1502.             ff_vc1_ttmb_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 0]];

  1503.             ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];

  1504.             init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,

  1505.                      ff_vc1_ttmb_bits[i], 1, 1,

  1506.                      ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

  1507.             ff_vc1_ttblk_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 1]];

  1508.             ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];

  1509.             init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,

  1510.                      ff_vc1_ttblk_bits[i], 1, 1,

  1511.                      ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1512.             ff_vc1_subblkpat_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 2]];

  1513.             ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];

  1514.             init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,

  1515.                      ff_vc1_subblkpat_bits[i], 1, 1,

  1516.                      ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1517.         }

  1518.         for (i = 0; i < 4; i++) {

  1519.             ff_vc1_4mv_block_pattern_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 9]];

  1520.             ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];

  1521.             init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,

  1522.                      ff_vc1_4mv_block_pattern_bits[i], 1, 1,

  1523.                      ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1524.             ff_vc1_cbpcy_p_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 10]];

  1525.             ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];

  1526.             init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,

  1527.                      ff_vc1_cbpcy_p_bits[i], 1, 1,

  1528.                      ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

  1529.             ff_vc1_mv_diff_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 11]];

  1530.             ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];

  1531.             init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,

  1532.                      ff_vc1_mv_diff_bits[i], 1, 1,

  1533.                      ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

  1534.         }

  1535.         for (i = 0; i < 8; i++) {

  1536.             ff_vc1_ac_coeff_table[i].table           = &vlc_table[vlc_offs[i * 2 + 21]];

  1537.             ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];

  1538.             init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],

  1539.                      &vc1_ac_tables[i][0][1], 8, 4,

  1540.                      &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);

  1541.             /* initialize interlaced MVDATA tables (2-Ref) */

  1542.             ff_vc1_2ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 2 + 22]];

  1543.             ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];

  1544.             init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,

  1545.                      ff_vc1_2ref_mvdata_bits[i], 1, 1,

  1546.                      ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);

  1547.         }

  1548.         for (i = 0; i < 4; i++) {

  1549.             /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */

  1550.             ff_vc1_intfr_4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 37]];

  1551.             ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];

  1552.             init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,

  1553.                      ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,

  1554.                      ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

  1555.             /* initialize NON-4MV MBMODE VLC tables for the same */

  1556.             ff_vc1_intfr_non4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 38]];

  1557.             ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];

  1558.             init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,

  1559.                      ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,

  1560.                      ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1561.             /* initialize interlaced MVDATA tables (1-Ref) */

  1562.             ff_vc1_1ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 39]];

  1563.             ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];

  1564.             init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,

  1565.                      ff_vc1_1ref_mvdata_bits[i], 1, 1,

  1566.                      ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);

  1567.         }

  1568.         for (i = 0; i < 4; i++) {

  1569.             /* Initialize 2MV Block pattern VLC tables */

  1570.             ff_vc1_2mv_block_pattern_vlc[i].table           = &vlc_table[vlc_offs[i + 49]];

  1571.             ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];

  1572.             init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,

  1573.                      ff_vc1_2mv_block_pattern_bits[i], 1, 1,

  1574.                      ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1575.         }

  1576.         for (i = 0; i < 8; i++) {

  1577.             /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */

  1578.             ff_vc1_icbpcy_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 53]];

  1579.             ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];

  1580.             init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,

  1581.                      ff_vc1_icbpcy_p_bits[i], 1, 1,

  1582.                      ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

  1583.             /* Initialize interlaced field picture MBMODE VLC tables */

  1584.             ff_vc1_if_mmv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 54]];

  1585.             ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];

  1586.             init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,

  1587.                      ff_vc1_if_mmv_mbmode_bits[i], 1, 1,

  1588.                      ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1589.             ff_vc1_if_1mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 55]];

  1590.             ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];

  1591.             init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,

  1592.                      ff_vc1_if_1mv_mbmode_bits[i], 1, 1,

  1593.                      ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

  1594.         }

  1595.         done = 1;

  1596.     }

  1597. 

  1598.     /* Other defaults */

  1599.     v->pq      = -1;

  1600.     v->mvrange = 0; /* 7.1.1.18, p80 */

  1601. 

  1602.     return 0;

  1603. }