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FFmpeg/libavcodec/ivi_common.c

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  1. /*

  2.  * common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

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

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

  10.  * License as published by the Free Software Foundation; either

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /**

  24.  * @file

  25.  * This file contains functions and data shared by both Indeo4 and

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #define BITSTREAM_READER_LE

  30. #include "libavutil/attributes.h"

  31. #include "libavutil/timer.h"

  32. #include "avcodec.h"

  33. #include "get_bits.h"

  34. #include "internal.h"

  35. #include "mathops.h"

  36. #include "ivi_common.h"

  37. #include "ivi_dsp.h"

  38. 

  39. /**

  40.  * These are 2x8 predefined Huffman codebooks for coding macroblock/block

  41.  * signals. They are specified using "huffman descriptors" in order to

  42.  * avoid huge static tables. The decoding tables will be generated at

  43.  * startup from these descriptors.

  44.  */

  45. /** static macroblock huffman tables */

  46. static const IVIHuffDesc ivi_mb_huff_desc[8] = {

  47.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  48.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  49.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  50.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  51.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  52.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  53.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  54.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  55. };

  56. 

  57. /** static block huffman tables */

  58. static const IVIHuffDesc ivi_blk_huff_desc[8] = {

  59.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  60.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  61.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  62.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  63.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  64.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  65.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  66.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  67. };

  68. 

  69. static VLC ivi_mb_vlc_tabs [8]; ///< static macroblock Huffman tables

  70. static VLC ivi_blk_vlc_tabs[8]; ///< static block Huffman tables

  71. 

  72. typedef void (*ivi_mc_func) (int16_t *buf, const int16_t *ref_buf,

  73.                              uint32_t pitch, int mc_type);

  74. 

  75. static int ivi_mc(IVIBandDesc *band, ivi_mc_func mc,

  76.                   int offs, int mv_x, int mv_y, int mc_type)

  77. {

  78.     int ref_offs = offs + mv_y * band->pitch + mv_x;

  79.     int buf_size = band->pitch * band->aheight;

  80.     int min_size = band->pitch * (band->blk_size - 1) + band->blk_size;

  81.     int ref_size = (mc_type > 1) * band->pitch + (mc_type & 1);

  82. 

  83.     av_assert0(offs >= 0 && ref_offs >= 0 && band->ref_buf);

  84.     av_assert0(buf_size - min_size >= offs);

  85.     av_assert0(buf_size - min_size - ref_size >= ref_offs);

  86. 

  87.     mc(band->buf + offs, band->ref_buf + ref_offs, band->pitch, mc_type);

  88. 

  89.     return 0;

  90. }

  91. 

  92. /**

  93.  *  Reverse "nbits" bits of the value "val" and return the result

  94.  *  in the least significant bits.

  95.  */

  96. static uint16_t inv_bits(uint16_t val, int nbits)

  97. {

  98.     uint16_t res;

  99. 

  100.     if (nbits <= 8) {

  101.         res = ff_reverse[val] >> (8 - nbits);

  102.     } else

  103.         res = ((ff_reverse[val & 0xFF] << 8) +

  104.                (ff_reverse[val >> 8])) >> (16 - nbits);

  105. 

  106.     return res;

  107. }

  108. 

  109. /*

  110.  *  Generate a huffman codebook from the given descriptor

  111.  *  and convert it into the FFmpeg VLC table.

  112.  *

  113.  *  @param[in]   cb    pointer to codebook descriptor

  114.  *  @param[out]  vlc   where to place the generated VLC table

  115.  *  @param[in]   flag  flag: 1 - for static or 0 for dynamic tables

  116.  *  @return     result code: 0 - OK, -1 = error (invalid codebook descriptor)

  117.  */

  118. static int ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)

  119. {

  120.     int         pos, i, j, codes_per_row, prefix, not_last_row;

  121.     uint16_t    codewords[256]; /* FIXME: move this temporal storage out? */

  122.     uint8_t     bits[256];

  123. 

  124.     pos = 0; /* current position = 0 */

  125. 

  126.     for (i = 0; i < cb->num_rows; i++) {

  127.         codes_per_row = 1 << cb->xbits[i];

  128.         not_last_row  = (i != cb->num_rows - 1);

  129.         prefix        = ((1 << i) - 1) << (cb->xbits[i] + not_last_row);

  130. 

  131.         for (j = 0; j < codes_per_row; j++) {

  132.             if (pos >= 256) /* Some Indeo5 codebooks can have more than 256 */

  133.                 break;      /* elements, but only 256 codes are allowed! */

  134. 

  135.             bits[pos] = i + cb->xbits[i] + not_last_row;

  136.             if (bits[pos] > IVI_VLC_BITS)

  137.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  138. 

  139.             codewords[pos] = inv_bits((prefix | j), bits[pos]);

  140.             if (!bits[pos])

  141.                 bits[pos] = 1;

  142. 

  143.             pos++;

  144.         }//for j

  145.     }//for i

  146. 

  147.     /* number of codewords = pos */

  148.     return init_vlc(vlc, IVI_VLC_BITS, pos, bits, 1, 1, codewords, 2, 2,

  149.                     (flag ? INIT_VLC_USE_NEW_STATIC : 0) | INIT_VLC_LE);

  150. }

  151. 

  152. av_cold void ff_ivi_init_static_vlc(void)

  153. {

  154.     int i;

  155.     static VLC_TYPE table_data[8192 * 16][2];

  156.     static int initialized_vlcs = 0;

  157. 

  158.     if (initialized_vlcs)

  159.         return;

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

  161.         ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;

  162.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  163.         ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],

  164.                                   &ivi_mb_vlc_tabs[i], 1);

  165.         ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;

  166.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  167.         ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],

  168.                                   &ivi_blk_vlc_tabs[i], 1);

  169.     }

  170.     initialized_vlcs = 1;

  171. }

  172. 

  173. /*

  174.  *  Copy huffman codebook descriptors.

  175.  *

  176.  *  @param[out]  dst  ptr to the destination descriptor

  177.  *  @param[in]   src  ptr to the source descriptor

  178.  */

  179. static void ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)

  180. {

  181.     dst->num_rows = src->num_rows;

  182.     memcpy(dst->xbits, src->xbits, src->num_rows);

  183. }

  184. 

  185. /*

  186.  *  Compare two huffman codebook descriptors.

  187.  *

  188.  *  @param[in]  desc1  ptr to the 1st descriptor to compare

  189.  *  @param[in]  desc2  ptr to the 2nd descriptor to compare

  190.  *  @return         comparison result: 0 - equal, 1 - not equal

  191.  */

  192. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  193.                              const IVIHuffDesc *desc2)

  194. {

  195.     return desc1->num_rows != desc2->num_rows ||

  196.            memcmp(desc1->xbits, desc2->xbits, desc1->num_rows);

  197. }

  198. 

  199. int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,

  200.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  201. {

  202.     int i, result;

  203.     IVIHuffDesc new_huff;

  204. 

  205.     if (!desc_coded) {

  206.         /* select default table */

  207.         huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[7]

  208.                                     : &ivi_mb_vlc_tabs [7];

  209.         return 0;

  210.     }

  211. 

  212.     huff_tab->tab_sel = get_bits(gb, 3);

  213.     if (huff_tab->tab_sel == 7) {

  214.         /* custom huffman table (explicitly encoded) */

  215.         new_huff.num_rows = get_bits(gb, 4);

  216.         if (!new_huff.num_rows) {

  217.             av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");

  218.             return AVERROR_INVALIDDATA;

  219.         }

  220. 

  221.         for (i = 0; i < new_huff.num_rows; i++)

  222.             new_huff.xbits[i] = get_bits(gb, 4);

  223. 

  224.         /* Have we got the same custom table? Rebuild if not. */

  225.         if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc) || !huff_tab->cust_tab.table) {

  226.             ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);

  227. 

  228.             if (huff_tab->cust_tab.table)

  229.                 ff_free_vlc(&huff_tab->cust_tab);

  230.             result = ivi_create_huff_from_desc(&huff_tab->cust_desc,

  231.                     &huff_tab->cust_tab, 0);

  232.             if (result) {

  233.                 // reset faulty description

  234.                 huff_tab->cust_desc.num_rows = 0;

  235.                 av_log(avctx, AV_LOG_ERROR,

  236.                        "Error while initializing custom vlc table!\n");

  237.                 return result;

  238.             }

  239.         }

  240.         huff_tab->tab = &huff_tab->cust_tab;

  241.     } else {

  242.         /* select one of predefined tables */

  243.         huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[huff_tab->tab_sel]

  244.             : &ivi_mb_vlc_tabs [huff_tab->tab_sel];

  245.     }

  246. 

  247.     return 0;

  248. }

  249. 

  250. /*

  251.  *  Free planes, bands and macroblocks buffers.

  252.  *

  253.  *  @param[in]  planes  pointer to the array of the plane descriptors

  254.  */

  255. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  256. {

  257.     int p, b, t;

  258. 

  259.     for (p = 0; p < 3; p++) {

  260.         if (planes[p].bands)

  261.         for (b = 0; b < planes[p].num_bands; b++) {

  262.             av_freep(&planes[p].bands[b].bufs[0]);

  263.             av_freep(&planes[p].bands[b].bufs[1]);

  264.             av_freep(&planes[p].bands[b].bufs[2]);

  265. 

  266.             if (planes[p].bands[b].blk_vlc.cust_tab.table)

  267.                 ff_free_vlc(&planes[p].bands[b].blk_vlc.cust_tab);

  268.             for (t = 0; t < planes[p].bands[b].num_tiles; t++)

  269.                 av_freep(&planes[p].bands[b].tiles[t].mbs);

  270.             av_freep(&planes[p].bands[b].tiles);

  271.         }

  272.         av_freep(&planes[p].bands);

  273.         planes[p].num_bands = 0;

  274.     }

  275. }

  276. 

  277. av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)

  278. {

  279.     int p, b;

  280.     uint32_t b_width, b_height, align_fac, width_aligned,

  281.              height_aligned, buf_size;

  282.     IVIBandDesc *band;

  283. 

  284.     ivi_free_buffers(planes);

  285. 

  286.     if (cfg->pic_width < 1 || cfg->pic_height < 1 ||

  287.         cfg->luma_bands < 1 || cfg->chroma_bands < 1)

  288.         return AVERROR_INVALIDDATA;

  289. 

  290.     /* fill in the descriptor of the luminance plane */

  291.     planes[0].width     = cfg->pic_width;

  292.     planes[0].height    = cfg->pic_height;

  293.     planes[0].num_bands = cfg->luma_bands;

  294. 

  295.     /* fill in the descriptors of the chrominance planes */

  296.     planes[1].width     = planes[2].width     = (cfg->pic_width  + 3) >> 2;

  297.     planes[1].height    = planes[2].height    = (cfg->pic_height + 3) >> 2;

  298.     planes[1].num_bands = planes[2].num_bands = cfg->chroma_bands;

  299. 

  300.     for (p = 0; p < 3; p++) {

  301.         planes[p].bands = av_mallocz(planes[p].num_bands * sizeof(IVIBandDesc));

  302.         if (!planes[p].bands)

  303.             return AVERROR(ENOMEM);

  304. 

  305.         /* select band dimensions: if there is only one band then it

  306.          *  has the full size, if there are several bands each of them

  307.          *  has only half size */

  308.         b_width  = planes[p].num_bands == 1 ? planes[p].width

  309.                                             : (planes[p].width  + 1) >> 1;

  310.         b_height = planes[p].num_bands == 1 ? planes[p].height

  311.                                             : (planes[p].height + 1) >> 1;

  312. 

  313.         /* luma   band buffers will be aligned on 16x16 (max macroblock size) */

  314.         /* chroma band buffers will be aligned on   8x8 (max macroblock size) */

  315.         align_fac       = p ? 8 : 16;

  316.         width_aligned   = FFALIGN(b_width , align_fac);

  317.         height_aligned  = FFALIGN(b_height, align_fac);

  318.         buf_size        = width_aligned * height_aligned * sizeof(int16_t);

  319. 

  320.         for (b = 0; b < planes[p].num_bands; b++) {

  321.             band = &planes[p].bands[b]; /* select appropriate plane/band */

  322.             band->plane    = p;

  323.             band->band_num = b;

  324.             band->width    = b_width;

  325.             band->height   = b_height;

  326.             band->pitch    = width_aligned;

  327.             band->aheight  = height_aligned;

  328.             band->bufs[0]  = av_mallocz(buf_size);

  329.             band->bufs[1]  = av_mallocz(buf_size);

  330.             band->bufsize  = buf_size/2;

  331.             if (!band->bufs[0] || !band->bufs[1])

  332.                 return AVERROR(ENOMEM);

  333. 

  334.             /* allocate the 3rd band buffer for scalability mode */

  335.             if (cfg->luma_bands > 1) {

  336.                 band->bufs[2] = av_mallocz(buf_size);

  337.                 if (!band->bufs[2])

  338.                     return AVERROR(ENOMEM);

  339.             }

  340.             /* reset custom vlc */

  341.             planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0;

  342.         }

  343.     }

  344. 

  345.     return 0;

  346. }

  347. 

  348. static int ivi_init_tiles(IVIBandDesc *band, IVITile *ref_tile,

  349.                           int p, int b, int t_height, int t_width)

  350. {

  351.     int x, y;

  352.     IVITile *tile = band->tiles;

  353. 

  354.     for (y = 0; y < band->height; y += t_height) {

  355.         for (x = 0; x < band->width; x += t_width) {

  356.             tile->xpos     = x;

  357.             tile->ypos     = y;

  358.             tile->mb_size  = band->mb_size;

  359.             tile->width    = FFMIN(band->width - x,  t_width);

  360.             tile->height   = FFMIN(band->height - y, t_height);

  361.             tile->is_empty = tile->data_size = 0;

  362.             /* calculate number of macroblocks */

  363.             tile->num_MBs  = IVI_MBs_PER_TILE(tile->width, tile->height,

  364.                                               band->mb_size);

  365. 

  366.             av_freep(&tile->mbs);

  367.             tile->mbs = av_mallocz(tile->num_MBs * sizeof(IVIMbInfo));

  368.             if (!tile->mbs)

  369.                 return AVERROR(ENOMEM);

  370. 

  371.             tile->ref_mbs = 0;

  372.             if (p || b) {

  373.                 if (tile->num_MBs != ref_tile->num_MBs) {

  374.                     av_log(NULL, AV_LOG_DEBUG, "ref_tile mismatch\n");

  375.                     return AVERROR_INVALIDDATA;

  376.                 }

  377.                 tile->ref_mbs = ref_tile->mbs;

  378.                 ref_tile++;

  379.             }

  380.             tile++;

  381.         }

  382.     }

  383. 

  384.     return 0;

  385. }

  386. 

  387. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  388.                               int tile_width, int tile_height)

  389. {

  390.     int p, b, x_tiles, y_tiles, t_width, t_height, ret;

  391.     IVIBandDesc *band;

  392. 

  393.     for (p = 0; p < 3; p++) {

  394.         t_width  = !p ? tile_width  : (tile_width  + 3) >> 2;

  395.         t_height = !p ? tile_height : (tile_height + 3) >> 2;

  396. 

  397.         if (!p && planes[0].num_bands == 4) {

  398.             t_width  >>= 1;

  399.             t_height >>= 1;

  400.         }

  401.         if(t_width<=0 || t_height<=0)

  402.             return AVERROR(EINVAL);

  403. 

  404.         for (b = 0; b < planes[p].num_bands; b++) {

  405.             band = &planes[p].bands[b];

  406.             x_tiles = IVI_NUM_TILES(band->width, t_width);

  407.             y_tiles = IVI_NUM_TILES(band->height, t_height);

  408.             band->num_tiles = x_tiles * y_tiles;

  409. 

  410.             av_freep(&band->tiles);

  411.             band->tiles = av_mallocz(band->num_tiles * sizeof(IVITile));

  412.             if (!band->tiles)

  413.                 return AVERROR(ENOMEM);

  414. 

  415.             /* use the first luma band as reference for motion vectors

  416.              * and quant */

  417.             ret = ivi_init_tiles(band, planes[0].bands[0].tiles,

  418.                                  p, b, t_height, t_width);

  419.             if (ret < 0)

  420.                 return ret;

  421.         }

  422.     }

  423. 

  424.     return 0;

  425. }

  426. 

  427. /*

  428.  *  Decode size of the tile data.

  429.  *  The size is stored as a variable-length field having the following format:

  430.  *  if (tile_data_size < 255) than this field is only one byte long

  431.  *  if (tile_data_size >= 255) than this field four is byte long: 0xFF X1 X2 X3

  432.  *  where X1-X3 is size of the tile data

  433.  *

  434.  *  @param[in,out]  gb  the GetBit context

  435.  *  @return     size of the tile data in bytes

  436.  */

  437. static int ivi_dec_tile_data_size(GetBitContext *gb)

  438. {

  439.     int    len;

  440. 

  441.     len = 0;

  442.     if (get_bits1(gb)) {

  443.         len = get_bits(gb, 8);

  444.         if (len == 255)

  445.             len = get_bits_long(gb, 24);

  446.     }

  447. 

  448.     /* align the bitstream reader on the byte boundary */

  449.     align_get_bits(gb);

  450. 

  451.     return len;

  452. }

  453. 

  454. static int ivi_dc_transform(IVIBandDesc *band, int *prev_dc, int buf_offs,

  455.                             int blk_size)

  456. {

  457.     int buf_size = band->pitch * band->aheight - buf_offs;

  458.     int min_size = (blk_size - 1) * band->pitch + blk_size;

  459. 

  460.     if (min_size > buf_size)

  461.         return AVERROR_INVALIDDATA;

  462. 

  463.     band->dc_transform(prev_dc, band->buf + buf_offs,

  464.                        band->pitch, blk_size);

  465. 

  466.     return 0;

  467. }

  468. 

  469. static int ivi_decode_coded_blocks(GetBitContext *gb, IVIBandDesc *band,

  470.                                    ivi_mc_func mc, int mv_x, int mv_y,

  471.                                    int *prev_dc, int is_intra, int mc_type,

  472.                                    uint32_t quant, int offs,

  473.                                    AVCodecContext *avctx)

  474. {

  475.     const uint16_t *base_tab  = is_intra ? band->intra_base : band->inter_base;

  476.     RVMapDesc *rvmap = band->rv_map;

  477.     uint8_t col_flags[8];

  478.     int32_t trvec[64];

  479.     uint32_t sym = 0, lo, hi, q;

  480.     int pos, run, val;

  481.     int blk_size   = band->blk_size;

  482.     int num_coeffs = blk_size * blk_size;

  483.     int col_mask   = blk_size - 1;

  484.     int scan_pos   = -1;

  485.     int min_size   = band->pitch * (band->transform_size - 1) +

  486.                      band->transform_size;

  487.     int buf_size   = band->pitch * band->aheight - offs;

  488. 

  489.     if (min_size > buf_size)

  490.         return AVERROR_INVALIDDATA;

  491. 

  492.     if (!band->scan) {

  493.         av_log(avctx, AV_LOG_ERROR, "Scan pattern is not set.\n");

  494.         return AVERROR_INVALIDDATA;

  495.     }

  496. 

  497.     /* zero transform vector */

  498.     memset(trvec, 0, num_coeffs * sizeof(trvec[0]));

  499.     /* zero column flags */

  500.     memset(col_flags, 0, sizeof(col_flags));

  501.     while (scan_pos <= num_coeffs) {

  502.         sym = get_vlc2(gb, band->blk_vlc.tab->table,

  503.                        IVI_VLC_BITS, 1);

  504.         if (sym == rvmap->eob_sym)

  505.             break; /* End of block */

  506. 

  507.         /* Escape - run/val explicitly coded using 3 vlc codes */

  508.         if (sym == rvmap->esc_sym) {

  509.             run = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1) + 1;

  510.             lo  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);

  511.             hi  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);

  512.             /* merge them and convert into signed val */

  513.             val = IVI_TOSIGNED((hi << 6) | lo);

  514.         } else {

  515.             if (sym >= 256U) {

  516.                 av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %d.\n", sym);

  517.                 return AVERROR_INVALIDDATA;

  518.             }

  519.             run = rvmap->runtab[sym];

  520.             val = rvmap->valtab[sym];

  521.         }

  522. 

  523.         /* de-zigzag and dequantize */

  524.         scan_pos += run;

  525.         if (scan_pos >= num_coeffs || scan_pos < 0)

  526.             break;

  527.         pos = band->scan[scan_pos];

  528. 

  529.         if (!val)

  530.             av_dlog(avctx, "Val = 0 encountered!\n");

  531. 

  532.         q = (base_tab[pos] * quant) >> 9;

  533.         if (q > 1)

  534.             val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);

  535.         trvec[pos] = val;

  536.         /* track columns containing non-zero coeffs */

  537.         col_flags[pos & col_mask] |= !!val;

  538.     }

  539. 

  540.     if (scan_pos < 0 || scan_pos >= num_coeffs && sym != rvmap->eob_sym)

  541.         return AVERROR_INVALIDDATA; /* corrupt block data */

  542. 

  543.     /* undoing DC coeff prediction for intra-blocks */

  544.     if (is_intra && band->is_2d_trans) {

  545.         *prev_dc     += trvec[0];

  546.         trvec[0]      = *prev_dc;

  547.         col_flags[0] |= !!*prev_dc;

  548.     }

  549. 

  550.     if(band->transform_size > band->blk_size){

  551.         av_log(NULL, AV_LOG_ERROR, "Too large transform\n");

  552.         return AVERROR_INVALIDDATA;

  553.     }

  554. 

  555.     /* apply inverse transform */

  556.     band->inv_transform(trvec, band->buf + offs,

  557.                         band->pitch, col_flags);

  558. 

  559.     /* apply motion compensation */

  560.     if (!is_intra)

  561.         return ivi_mc(band, mc, offs, mv_x, mv_y, mc_type);

  562. 

  563.     return 0;

  564. }

  565. /*

  566.  *  Decode block data:

  567.  *  extract huffman-coded transform coefficients from the bitstream,

  568.  *  dequantize them, apply inverse transform and motion compensation

  569.  *  in order to reconstruct the picture.

  570.  *

  571.  *  @param[in,out]  gb    the GetBit context

  572.  *  @param[in]      band  pointer to the band descriptor

  573.  *  @param[in]      tile  pointer to the tile descriptor

  574.  *  @return     result code: 0 - OK, -1 = error (corrupted blocks data)

  575.  */

  576. static int ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band,

  577.                              IVITile *tile, AVCodecContext *avctx)

  578. {

  579.     int mbn, blk, num_blocks, blk_size, ret, is_intra, mc_type = 0;

  580.     int mv_x = 0, mv_y = 0;

  581.     int32_t prev_dc;

  582.     uint32_t cbp, quant, buf_offs;

  583.     IVIMbInfo *mb;

  584.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  585.     const uint8_t *scale_tab;

  586. 

  587.     /* init intra prediction for the DC coefficient */

  588.     prev_dc    = 0;

  589.     blk_size   = band->blk_size;

  590.     /* number of blocks per mb */

  591.     num_blocks = (band->mb_size != blk_size) ? 4 : 1;

  592.     if (blk_size == 8) {

  593.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  594.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  595.     } else {

  596.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  597.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  598.     }

  599. 

  600.     for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {

  601.         is_intra = !mb->type;

  602.         cbp      = mb->cbp;

  603.         buf_offs = mb->buf_offs;

  604. 

  605.         quant = band->glob_quant + mb->q_delta;

  606.         if (avctx->codec_id == AV_CODEC_ID_INDEO4)

  607.             quant = av_clip(quant, 0, 31);

  608.         else

  609.             quant = av_clip(quant, 0, 23);

  610. 

  611.         scale_tab = is_intra ? band->intra_scale : band->inter_scale;

  612.         if (scale_tab)

  613.             quant = scale_tab[quant];

  614. 

  615.         if (!is_intra) {

  616.             mv_x = mb->mv_x;

  617.             mv_y = mb->mv_y;

  618.             if (band->is_halfpel) {

  619.                 mc_type = ((mv_y & 1) << 1) | (mv_x & 1);

  620.                 mv_x >>= 1;

  621.                 mv_y >>= 1; /* convert halfpel vectors into fullpel ones */

  622.             }

  623.             if (mb->type) {

  624.                 int dmv_x, dmv_y, cx, cy;

  625. 

  626.                 dmv_x = mb->mv_x >> band->is_halfpel;

  627.                 dmv_y = mb->mv_y >> band->is_halfpel;

  628.                 cx    = mb->mv_x &  band->is_halfpel;

  629.                 cy    = mb->mv_y &  band->is_halfpel;

  630. 

  631.                 if (mb->xpos + dmv_x < 0 ||

  632.                     mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||

  633.                     mb->ypos + dmv_y < 0 ||

  634.                     mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {

  635.                     return AVERROR_INVALIDDATA;

  636.                 }

  637.             }

  638.         }

  639. 

  640.         for (blk = 0; blk < num_blocks; blk++) {

  641.             /* adjust block position in the buffer according to its number */

  642.             if (blk & 1) {

  643.                 buf_offs += blk_size;

  644.             } else if (blk == 2) {

  645.                 buf_offs -= blk_size;

  646.                 buf_offs += blk_size * band->pitch;

  647.             }

  648. 

  649.             if (cbp & 1) { /* block coded ? */

  650.                 ret = ivi_decode_coded_blocks(gb, band, mc_with_delta_func,

  651.                                               mv_x, mv_y, &prev_dc, is_intra,

  652.                                               mc_type, quant, buf_offs, avctx);

  653.                 if (ret < 0)

  654.                     return ret;

  655.             } else {

  656.                 /* block not coded */

  657.                 /* for intra blocks apply the dc slant transform */

  658.                 /* for inter - perform the motion compensation without delta */

  659.                 if (is_intra) {

  660.                     ret = ivi_dc_transform(band, &prev_dc, buf_offs, blk_size);

  661.                     if (ret < 0)

  662.                         return ret;

  663.                 } else {

  664.                     ret = ivi_mc(band, mc_no_delta_func, buf_offs,

  665.                                  mv_x, mv_y, mc_type);

  666.                     if (ret < 0)

  667.                         return ret;

  668.                 }

  669.             }

  670. 

  671.             cbp >>= 1;

  672.         }// for blk

  673.     }// for mbn

  674. 

  675.     align_get_bits(gb);

  676. 

  677.     return 0;

  678. }

  679. 

  680. /**

  681.  *  Handle empty tiles by performing data copying and motion

  682.  *  compensation respectively.

  683.  *

  684.  *  @param[in]  avctx     ptr to the AVCodecContext

  685.  *  @param[in]  band      pointer to the band descriptor

  686.  *  @param[in]  tile      pointer to the tile descriptor

  687.  *  @param[in]  mv_scale  scaling factor for motion vectors

  688.  */

  689. static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,

  690.                                   IVITile *tile, int32_t mv_scale)

  691. {

  692.     int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;

  693.     int             offs, mb_offset, row_offset, ret;

  694.     IVIMbInfo       *mb, *ref_mb;

  695.     const int16_t   *src;

  696.     int16_t         *dst;

  697.     ivi_mc_func     mc_no_delta_func;

  698. 

  699.     if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {

  700.         av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches "

  701.                "parameters %d in ivi_process_empty_tile()\n",

  702.                tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));

  703.         return AVERROR_INVALIDDATA;

  704.     }

  705. 

  706.     offs       = tile->ypos * band->pitch + tile->xpos;

  707.     mb         = tile->mbs;

  708.     ref_mb     = tile->ref_mbs;

  709.     row_offset = band->mb_size * band->pitch;

  710.     need_mc    = 0; /* reset the mc tracking flag */

  711. 

  712.     for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) {

  713.         mb_offset = offs;

  714. 

  715.         for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) {

  716.             mb->xpos     = x;

  717.             mb->ypos     = y;

  718.             mb->buf_offs = mb_offset;

  719. 

  720.             mb->type = 1; /* set the macroblocks type = INTER */

  721.             mb->cbp  = 0; /* all blocks are empty */

  722. 

  723.             if (!band->qdelta_present && !band->plane && !band->band_num) {

  724.                 mb->q_delta = band->glob_quant;

  725.                 mb->mv_x    = 0;

  726.                 mb->mv_y    = 0;

  727.             }

  728. 

  729.             if (band->inherit_qdelta && ref_mb)

  730.                 mb->q_delta = ref_mb->q_delta;

  731. 

  732.             if (band->inherit_mv && ref_mb) {

  733.                 /* motion vector inheritance */

  734.                 if (mv_scale) {

  735.                     mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);

  736.                     mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);

  737.                 } else {

  738.                     mb->mv_x = ref_mb->mv_x;

  739.                     mb->mv_y = ref_mb->mv_y;

  740.                 }

  741.                 need_mc |= mb->mv_x || mb->mv_y; /* tracking non-zero motion vectors */

  742.                 {

  743.                     int dmv_x, dmv_y, cx, cy;

  744. 

  745.                     dmv_x = mb->mv_x >> band->is_halfpel;

  746.                     dmv_y = mb->mv_y >> band->is_halfpel;

  747.                     cx    = mb->mv_x &  band->is_halfpel;

  748.                     cy    = mb->mv_y &  band->is_halfpel;

  749. 

  750.                     if (   mb->xpos + dmv_x < 0

  751.                         || mb->xpos + dmv_x + band->mb_size + cx > band->pitch

  752.                         || mb->ypos + dmv_y < 0

  753.                         || mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {

  754.                         av_log(avctx, AV_LOG_ERROR, "MV out of bounds\n");

  755.                         return AVERROR_INVALIDDATA;

  756.                     }

  757.                 }

  758.             }

  759. 

  760.             mb++;

  761.             if (ref_mb)

  762.                 ref_mb++;

  763.             mb_offset += band->mb_size;

  764.         } // for x

  765.         offs += row_offset;

  766.     } // for y

  767. 

  768.     if (band->inherit_mv && need_mc) { /* apply motion compensation if there is at least one non-zero motion vector */

  769.         num_blocks = (band->mb_size != band->blk_size) ? 4 : 1; /* number of blocks per mb */

  770.         mc_no_delta_func = (band->blk_size == 8) ? ff_ivi_mc_8x8_no_delta

  771.                                                  : ff_ivi_mc_4x4_no_delta;

  772. 

  773.         for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {

  774.             mv_x = mb->mv_x;

  775.             mv_y = mb->mv_y;

  776.             if (!band->is_halfpel) {

  777.                 mc_type = 0; /* we have only fullpel vectors */

  778.             } else {

  779.                 mc_type = ((mv_y & 1) << 1) | (mv_x & 1);

  780.                 mv_x >>= 1;

  781.                 mv_y >>= 1; /* convert halfpel vectors into fullpel ones */

  782.             }

  783. 

  784.             for (blk = 0; blk < num_blocks; blk++) {

  785.                 /* adjust block position in the buffer according with its number */

  786.                 offs = mb->buf_offs + band->blk_size * ((blk & 1) + !!(blk & 2) * band->pitch);

  787.                 ret = ivi_mc(band, mc_no_delta_func, offs,

  788.                              mv_x, mv_y, mc_type);

  789.                 if (ret < 0)

  790.                     return ret;

  791.             }

  792.         }

  793.     } else {

  794.         /* copy data from the reference tile into the current one */

  795.         src = band->ref_buf + tile->ypos * band->pitch + tile->xpos;

  796.         dst = band->buf     + tile->ypos * band->pitch + tile->xpos;

  797.         for (y = 0; y < tile->height; y++) {

  798.             memcpy(dst, src, tile->width*sizeof(band->buf[0]));

  799.             src += band->pitch;

  800.             dst += band->pitch;

  801.         }

  802.     }

  803. 

  804.     return 0;

  805. }

  806. 

  807. 

  808. #ifdef DEBUG

  809. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  810. {

  811.     int         x, y;

  812.     int16_t     *src, checksum;

  813. 

  814.     src = band->buf;

  815.     checksum = 0;

  816. 

  817.     for (y = 0; y < band->height; src += band->pitch, y++)

  818.         for (x = 0; x < band->width; x++)

  819.             checksum += src[x];

  820. 

  821.     return checksum;

  822. }

  823. #endif

  824. 

  825. /*

  826.  *  Convert and output the current plane.

  827.  *  This conversion is done by adding back the bias value of 128

  828.  *  (subtracted in the encoder) and clipping the result.

  829.  *

  830.  *  @param[in]   plane      pointer to the descriptor of the plane being processed

  831.  *  @param[out]  dst        pointer to the buffer receiving converted pixels

  832.  *  @param[in]   dst_pitch  pitch for moving to the next y line

  833.  */

  834. static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch)

  835. {

  836.     int             x, y;

  837.     const int16_t   *src  = plane->bands[0].buf;

  838.     uint32_t        pitch = plane->bands[0].pitch;

  839. 

  840.     if (!src)

  841.         return;

  842. 

  843.     for (y = 0; y < plane->height; y++) {

  844.         for (x = 0; x < plane->width; x++)

  845.             dst[x] = av_clip_uint8(src[x] + 128);

  846.         src += pitch;

  847.         dst += dst_pitch;

  848.     }

  849. }

  850. 

  851. /**

  852.  *  Decode an Indeo 4 or 5 band.

  853.  *

  854.  *  @param[in,out]  ctx    ptr to the decoder context

  855.  *  @param[in,out]  band   ptr to the band descriptor

  856.  *  @param[in]      avctx  ptr to the AVCodecContext

  857.  *  @return         result code: 0 = OK, -1 = error

  858.  */

  859. static int decode_band(IVI45DecContext *ctx,

  860.                        IVIBandDesc *band, AVCodecContext *avctx)

  861. {

  862.     int         result, i, t, idx1, idx2, pos;

  863.     IVITile     *tile;

  864. 

  865.     band->buf     = band->bufs[ctx->dst_buf];

  866.     if (!band->buf) {

  867.         av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");

  868.         return AVERROR_INVALIDDATA;

  869.     }

  870.     band->ref_buf = band->bufs[ctx->ref_buf];

  871.     band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);

  872. 

  873.     result = ctx->decode_band_hdr(ctx, band, avctx);

  874.     if (result) {

  875.         av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",

  876.                result);

  877.         return result;

  878.     }

  879. 

  880.     if (band->is_empty) {

  881.         av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");

  882.         return AVERROR_INVALIDDATA;

  883.     }

  884. 

  885.     band->rv_map = &ctx->rvmap_tabs[band->rvmap_sel];

  886. 

  887.     /* apply corrections to the selected rvmap table if present */

  888.     for (i = 0; i < band->num_corr; i++) {

  889.         idx1 = band->corr[i * 2];

  890.         idx2 = band->corr[i * 2 + 1];

  891.         FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);

  892.         FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);

  893.         if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)

  894.             band->rv_map->eob_sym ^= idx1 ^ idx2;

  895.         if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)

  896.             band->rv_map->esc_sym ^= idx1 ^ idx2;

  897.     }

  898. 

  899.     pos = get_bits_count(&ctx->gb);

  900. 

  901.     for (t = 0; t < band->num_tiles; t++) {

  902.         tile = &band->tiles[t];

  903. 

  904.         if (tile->mb_size != band->mb_size) {

  905.             av_log(avctx, AV_LOG_ERROR, "MB sizes mismatch: %d vs. %d\n",

  906.                    band->mb_size, tile->mb_size);

  907.             return AVERROR_INVALIDDATA;

  908.         }

  909.         tile->is_empty = get_bits1(&ctx->gb);

  910.         if (tile->is_empty) {

  911.             result = ivi_process_empty_tile(avctx, band, tile,

  912.                                       (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));

  913.             if (result < 0)

  914.                 break;

  915.             av_dlog(avctx, "Empty tile encountered!\n");

  916.         } else {

  917.             tile->data_size = ivi_dec_tile_data_size(&ctx->gb);

  918.             if (!tile->data_size) {

  919.                 av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");

  920.                 result = AVERROR_INVALIDDATA;

  921.                 break;

  922.             }

  923. 

  924.             result = ctx->decode_mb_info(ctx, band, tile, avctx);

  925.             if (result < 0)

  926.                 break;

  927. 

  928.             result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);

  929.             if (result < 0) {

  930.                 av_log(avctx, AV_LOG_ERROR,

  931.                        "Corrupted tile data encountered!\n");

  932.                 break;

  933.             }

  934. 

  935.             if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {

  936.                 av_log(avctx, AV_LOG_ERROR,

  937.                        "Tile data_size mismatch!\n");

  938.                 result = AVERROR_INVALIDDATA;

  939.                 break;

  940.             }

  941. 

  942.             pos += tile->data_size << 3; // skip to next tile

  943.         }

  944.     }

  945. 

  946.     /* restore the selected rvmap table by applying its corrections in

  947.      * reverse order */

  948.     for (i = band->num_corr-1; i >= 0; i--) {

  949.         idx1 = band->corr[i*2];

  950.         idx2 = band->corr[i*2+1];

  951.         FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);

  952.         FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);

  953.         if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)

  954.             band->rv_map->eob_sym ^= idx1 ^ idx2;

  955.         if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)

  956.             band->rv_map->esc_sym ^= idx1 ^ idx2;

  957.     }

  958. 

  959. #ifdef DEBUG

  960.     if (band->checksum_present) {

  961.         uint16_t chksum = ivi_calc_band_checksum(band);

  962.         if (chksum != band->checksum) {

  963.             av_log(avctx, AV_LOG_ERROR,

  964.                    "Band checksum mismatch! Plane %d, band %d, "

  965.                    "received: %x, calculated: %x\n",

  966.                    band->plane, band->band_num, band->checksum, chksum);

  967.         }

  968.     }

  969. #endif

  970. 

  971.     align_get_bits(&ctx->gb);

  972. 

  973.     return result;

  974. }

  975. 

  976. int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

  977.                         AVPacket *avpkt)

  978. {

  979.     IVI45DecContext *ctx = avctx->priv_data;

  980.     const uint8_t   *buf = avpkt->data;

  981.     AVFrame       *frame = data;

  982.     int             buf_size = avpkt->size;

  983.     int             result, p, b;

  984. 

  985.     init_get_bits(&ctx->gb, buf, buf_size * 8);

  986.     ctx->frame_data = buf;

  987.     ctx->frame_size = buf_size;

  988. 

  989.     result = ctx->decode_pic_hdr(ctx, avctx);

  990.     if (result) {

  991.         av_log(avctx, AV_LOG_ERROR,

  992.                "Error while decoding picture header: %d\n", result);

  993.         return result;

  994.     }

  995.     if (ctx->gop_invalid)

  996.         return AVERROR_INVALIDDATA;

  997. 

  998.     if (ctx->gop_flags & IVI5_IS_PROTECTED) {

  999.         avpriv_report_missing_feature(avctx, "Password-protected clip!\n");

  1000.         return AVERROR_PATCHWELCOME;

  1001.     }

  1002. 

  1003.     if (!ctx->planes[0].bands) {

  1004.         av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");

  1005.         return AVERROR_INVALIDDATA;

  1006.     }

  1007. 

  1008.     ctx->switch_buffers(ctx);

  1009. 

  1010.     //{ START_TIMER;

  1011. 

  1012.     if (ctx->is_nonnull_frame(ctx)) {

  1013.         ctx->buf_invalid[ctx->dst_buf] = 1;

  1014.         for (p = 0; p < 3; p++) {

  1015.             for (b = 0; b < ctx->planes[p].num_bands; b++) {

  1016.                 result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);

  1017.                 if (result < 0) {

  1018.                     av_log(avctx, AV_LOG_ERROR,

  1019.                            "Error while decoding band: %d, plane: %d\n", b, p);

  1020.                     return result;

  1021.                 }

  1022.             }

  1023.         }

  1024.         ctx->buf_invalid[ctx->dst_buf] = 0;

  1025.     } else {

  1026.         if (ctx->is_scalable)

  1027.             return AVERROR_INVALIDDATA;

  1028. 

  1029.         for (p = 0; p < 3; p++) {

  1030.             if (!ctx->planes[p].bands[0].buf)

  1031.                 return AVERROR_INVALIDDATA;

  1032.         }

  1033.     }

  1034.     if (ctx->buf_invalid[ctx->dst_buf])

  1035.         return -1;

  1036. 

  1037.     //STOP_TIMER("decode_planes"); }

  1038. 

  1039.     /* If the bidirectional mode is enabled, next I and the following P

  1040.      * frame will be sent together. Unfortunately the approach below seems

  1041.      * to be the only way to handle the B-frames mode.

  1042.      * That's exactly the same Intel decoders do.

  1043.      */

  1044.     if (avctx->codec_id == AV_CODEC_ID_INDEO4 &&

  1045.         ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {

  1046.             // skip version string

  1047.         while (get_bits(&ctx->gb, 8)) {

  1048.             if (get_bits_left(&ctx->gb) < 8)

  1049.                 return AVERROR_INVALIDDATA;

  1050.         }

  1051. 

  1052.         skip_bits_long(&ctx->gb, 64);  // skip padding, TODO: implement correct 8-bytes alignment

  1053.         if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)

  1054.             av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");

  1055.     }

  1056. 

  1057.     if (!ctx->is_nonnull_frame(ctx))

  1058.         return buf_size;

  1059. 

  1060.     result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  1061.     if (result < 0)

  1062.         return result;

  1063. 

  1064.     if ((result = ff_get_buffer(avctx, frame, 0)) < 0)

  1065.         return result;

  1066. 

  1067.     if (ctx->is_scalable) {

  1068.         if (avctx->codec_id == AV_CODEC_ID_INDEO4)

  1069.             ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1070.         else

  1071.             ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1072.     } else {

  1073.         ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1074.     }

  1075. 

  1076.     ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);

  1077.     ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);

  1078. 

  1079.     *got_frame = 1;

  1080. 

  1081.     return buf_size;

  1082. }

  1083. 

  1084. /**

  1085.  *  Close Indeo5 decoder and clean up its context.

  1086.  */

  1087. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  1088. {

  1089.     IVI45DecContext *ctx = avctx->priv_data;

  1090. 

  1091.     ivi_free_buffers(&ctx->planes[0]);

  1092. 

  1093.     if (ctx->mb_vlc.cust_tab.table)

  1094.         ff_free_vlc(&ctx->mb_vlc.cust_tab);

  1095. 

  1096. #if IVI4_STREAM_ANALYSER

  1097.     if (avctx->codec_id == AV_CODEC_ID_INDEO4) {

  1098.     if (ctx->is_scalable)

  1099.         av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");

  1100.     if (ctx->uses_tiling)

  1101.         av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");

  1102.     if (ctx->has_b_frames)

  1103.         av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");

  1104.     if (ctx->has_transp)

  1105.         av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");

  1106.     if (ctx->uses_haar)

  1107.         av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");

  1108.     if (ctx->uses_fullpel)

  1109.         av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");

  1110.     }

  1111. #endif

  1112. 

  1113.     return 0;

  1114. }

  1115. 

  1116. 

  1117. /**

  1118.  *  Scan patterns shared between indeo4 and indeo5

  1119.  */

  1120. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1121.     0,  8, 16, 24, 32, 40, 48, 56,

  1122.     1,  9, 17, 25, 33, 41, 49, 57,

  1123.     2, 10, 18, 26, 34, 42, 50, 58,

  1124.     3, 11, 19, 27, 35, 43, 51, 59,

  1125.     4, 12, 20, 28, 36, 44, 52, 60,

  1126.     5, 13, 21, 29, 37, 45, 53, 61,

  1127.     6, 14, 22, 30, 38, 46, 54, 62,

  1128.     7, 15, 23, 31, 39, 47, 55, 63

  1129. };

  1130. 

  1131. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1132.      0,  1,  2,  3,  4,  5,  6,  7,

  1133.      8,  9, 10, 11, 12, 13, 14, 15,

  1134.     16, 17, 18, 19, 20, 21, 22, 23,

  1135.     24, 25, 26, 27, 28, 29, 30, 31,

  1136.     32, 33, 34, 35, 36, 37, 38, 39,

  1137.     40, 41, 42, 43, 44, 45, 46, 47,

  1138.     48, 49, 50, 51, 52, 53, 54, 55,

  1139.     56, 57, 58, 59, 60, 61, 62, 63

  1140. };

  1141. 

  1142. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1143.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1144. };

  1145. 

  1146. 

  1147. /**

  1148.  *  Run-value (RLE) tables.

  1149.  */

  1150. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1151. {   /* MapTab0 */

  1152.     5, /* eob_sym */

  1153.     2, /* esc_sym */

  1154.     /* run table */

  1155.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1156.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1157.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1158.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  1159.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1160.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1161.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1162.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1163.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1164.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1165.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1166.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1167.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1168.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1169.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1170.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1171. 

  1172.     /* value table */

  1173.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1174.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1175.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1176.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1177.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1178.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1179.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1180.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1181.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1182.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1183.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1184.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1185.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1186.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1187.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1188.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1189. },{

  1190.     /* MapTab1 */

  1191.     0,  /* eob_sym */

  1192.     38, /* esc_sym */

  1193.     /* run table */

  1194.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1195.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1196.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1197.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1198.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1199.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1200.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1201.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1202.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1203.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1204.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1205.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1206.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1207.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1208.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1209.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1210. 

  1211.     /* value table */

  1212.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1213.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1214.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  1215.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  1216.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1217.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1218.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1219.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1220.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1221.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1222.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1223.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1224.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1225.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1226.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1227.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1228. },{

  1229.     /* MapTab2 */

  1230.     2,  /* eob_sym */

  1231.     11, /* esc_sym */

  1232.     /* run table */

  1233.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1234.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1235.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1236.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1237.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1238.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1239.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1240.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1241.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1242.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1243.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1244.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1245.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1246.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1247.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1248.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1249. 

  1250.     /* value table */

  1251.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1252.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1253.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1254.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1255.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1256.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1257.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1258.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1259.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1260.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1261.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1262.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1263.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1264.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1265.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1266.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1267. },{

  1268.     /* MapTab3 */

  1269.     0,  /* eob_sym */

  1270.     35, /* esc_sym */

  1271.     /* run table */

  1272.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1273.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1274.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1275.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1276.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1277.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1278.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1279.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1280.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1281.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1282.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1283.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1284.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1285.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1286.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1287.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1288. 

  1289.     /* value table */

  1290.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1291.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1292.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1293.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1294.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1295.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1296.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1297.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1298.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1299.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1300.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1301.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1302.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1303.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1304.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1305.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1306. },{

  1307.     /* MapTab4 */

  1308.     0,  /* eob_sym */

  1309.     34, /* esc_sym */

  1310.     /* run table */

  1311.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1312.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1313.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1314.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1315.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1316.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1317.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1318.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1319.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1320.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1321.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1322.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1323.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1324.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1325.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1326.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1327. 

  1328.     /* value table */

  1329.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1330.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1331.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1332.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1333.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1334.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1335.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1336.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1337.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1338.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1339.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1340.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1341.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1342.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1343.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1344.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1345. },{

  1346.     /* MapTab5 */

  1347.     2,  /* eob_sym */

  1348.     33, /* esc_sym */

  1349.     /* run table */

  1350.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1351.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1352.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1353.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1354.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1355.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1356.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1357.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1358.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1359.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1360.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1361.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1362.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1363.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1364.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1365.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1366. 

  1367.     /* value table */

  1368.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1369.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1370.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1371.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1372.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1373.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1374.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1375.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1376.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1377.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1378.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1379.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1380.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1381.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1382.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1383.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1384. },{

  1385.     /* MapTab6 */

  1386.     2,  /* eob_sym */

  1387.     13, /* esc_sym */

  1388.     /* run table */

  1389.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1390.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1391.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1392.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1393.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1394.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1395.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1396.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1397.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1398.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1399.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1400.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1401.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1402.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1403.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1404.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1405. 

  1406.     /* value table */

  1407.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1408.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1409.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1410.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1411.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1412.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1413.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1414.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1415.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1416.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1417.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1418.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1419.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1420.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1421.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1422.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1423. },{

  1424.     /* MapTab7 */

  1425.     2,  /* eob_sym */

  1426.     38, /* esc_sym */

  1427.     /* run table */

  1428.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1429.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1430.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1431.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1432.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1433.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1434.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1435.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1436.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1437.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1438.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1439.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1440.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1441.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1442.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1443.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1444. 

  1445.     /* value table */

  1446.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1447.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1448.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1449.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1450.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1451.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1452.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1453.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1454.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1455.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1456.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1457.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1458.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1459.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1460.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1461.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1462. },{

  1463.     /* MapTab8 */

  1464.     4,  /* eob_sym */

  1465.     11, /* esc_sym */

  1466.     /* run table */

  1467.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1468.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1469.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1470.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1471.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1472.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1473.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1474.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1475.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1476.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1477.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1478.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1479.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1480.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1481.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1482.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1483. 

  1484.     /* value table */

  1485.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1486.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1487.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1488.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1489.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1490.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1491.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1492.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1493.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1494.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1495.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1496.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1497.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1498.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1499.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1500.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1501. }

  1502. };