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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. #include <inttypes.h>

  30. 

  31. #define BITSTREAM_READER_LE

  32. #include "libavutil/attributes.h"

  33. #include "libavutil/timer.h"

  34. #include "avcodec.h"

  35. #include "get_bits.h"

  36. #include "internal.h"

  37. #include "mathops.h"

  38. #include "ivi_common.h"

  39. #include "ivi_dsp.h"

  40. 

  41. /**

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

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

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

  45.  * startup from these descriptors.

  46.  */

  47. /** static macroblock huffman tables */

  48. static const IVIHuffDesc ivi_mb_huff_desc[8] = {

  49.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  50.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  51.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  52.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  53.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  54.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  55.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  56.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  57. };

  58. 

  59. /** static block huffman tables */

  60. static const IVIHuffDesc ivi_blk_huff_desc[8] = {

  61.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  62.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  63.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

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

  65.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  66.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  67.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  68.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  69. };

  70. 

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

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

  73. 

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

  75.                              uint32_t pitch, int mc_type);

  76. 

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

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

  79. {

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

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

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

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

  84. 

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

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

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

  88. 

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

  90. 

  91.     return 0;

  92. }

  93. 

  94. /**

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

  96.  *  in the least significant bits.

  97.  */

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

  99. {

  100.     uint16_t res;

  101. 

  102.     if (nbits <= 8) {

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

  104.     } else

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

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

  107. 

  108.     return res;

  109. }

  110. 

  111. /*

  112.  *  Generate a huffman codebook from the given descriptor

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

  114.  *

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

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

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

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

  119.  */

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

  121. {

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

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

  124.     uint8_t     bits[256];

  125. 

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

  127. 

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

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

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

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

  132. 

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

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

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

  136. 

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

  138.             if (bits[pos] > IVI_VLC_BITS)

  139.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  140. 

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

  142.             if (!bits[pos])

  143.                 bits[pos] = 1;

  144. 

  145.             pos++;

  146.         }//for j

  147.     }//for i

  148. 

  149.     /* number of codewords = pos */

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

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

  152. }

  153. 

  154. av_cold void ff_ivi_init_static_vlc(void)

  155. {

  156.     int i;

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

  158.     static int initialized_vlcs = 0;

  159. 

  160.     if (initialized_vlcs)

  161.         return;

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

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

  164.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  165.         ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],

  166.                                   &ivi_mb_vlc_tabs[i], 1);

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

  168.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  169.         ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],

  170.                                   &ivi_blk_vlc_tabs[i], 1);

  171.     }

  172.     initialized_vlcs = 1;

  173. }

  174. 

  175. /*

  176.  *  Copy huffman codebook descriptors.

  177.  *

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

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

  180.  */

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

  182. {

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

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

  185. }

  186. 

  187. /*

  188.  *  Compare two huffman codebook descriptors.

  189.  *

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

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

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

  193.  */

  194. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  195.                              const IVIHuffDesc *desc2)

  196. {

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

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

  199. }

  200. 

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

  202.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  203. {

  204.     int i, result;

  205.     IVIHuffDesc new_huff;

  206. 

  207.     if (!desc_coded) {

  208.         /* select default table */

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

  210.                                     : &ivi_mb_vlc_tabs [7];

  211.         return 0;

  212.     }

  213. 

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

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

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

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

  218.         if (!new_huff.num_rows) {

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

  220.             return AVERROR_INVALIDDATA;

  221.         }

  222. 

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

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

  225. 

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

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

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

  229. 

  230.             if (huff_tab->cust_tab.table)

  231.                 ff_free_vlc(&huff_tab->cust_tab);

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

  233.                     &huff_tab->cust_tab, 0);

  234.             if (result) {

  235.                 // reset faulty description

  236.                 huff_tab->cust_desc.num_rows = 0;

  237.                 av_log(avctx, AV_LOG_ERROR,

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

  239.                 return result;

  240.             }

  241.         }

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

  243.     } else {

  244.         /* select one of predefined tables */

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

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

  247.     }

  248. 

  249.     return 0;

  250. }

  251. 

  252. /*

  253.  *  Free planes, bands and macroblocks buffers.

  254.  *

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

  256.  */

  257. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  258. {

  259.     int p, b, t;

  260. 

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

  262.         if (planes[p].bands)

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

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

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

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

  267. 

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

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

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

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

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

  273.         }

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

  275.         planes[p].num_bands = 0;

  276.     }

  277. }

  278. 

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

  280. {

  281.     int p, b;

  282.     uint32_t b_width, b_height, align_fac, width_aligned,

  283.              height_aligned, buf_size;

  284.     IVIBandDesc *band;

  285. 

  286.     ivi_free_buffers(planes);

  287. 

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

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

  290.         return AVERROR_INVALIDDATA;

  291. 

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

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

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

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

  296. 

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

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

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

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

  301. 

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

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

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

  305.             return AVERROR(ENOMEM);

  306. 

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

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

  309.          *  has only half size */

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

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

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

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

  314. 

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

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

  317.         align_fac       = p ? 8 : 16;

  318.         width_aligned   = FFALIGN(b_width , align_fac);

  319.         height_aligned  = FFALIGN(b_height, align_fac);

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

  321. 

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

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

  324.             band->plane    = p;

  325.             band->band_num = b;

  326.             band->width    = b_width;

  327.             band->height   = b_height;

  328.             band->pitch    = width_aligned;

  329.             band->aheight  = height_aligned;

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

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

  332.             band->bufsize  = buf_size/2;

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

  334.                 return AVERROR(ENOMEM);

  335. 

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

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

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

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

  340.                     return AVERROR(ENOMEM);

  341.             }

  342.             /* reset custom vlc */

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

  344.         }

  345.     }

  346. 

  347.     return 0;

  348. }

  349. 

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

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

  352. {

  353.     int x, y;

  354.     IVITile *tile = band->tiles;

  355. 

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

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

  358.             tile->xpos     = x;

  359.             tile->ypos     = y;

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

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

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

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

  364.             /* calculate number of macroblocks */

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

  366.                                               band->mb_size);

  367. 

  368.             av_freep(&tile->mbs);

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

  370.             if (!tile->mbs)

  371.                 return AVERROR(ENOMEM);

  372. 

  373.             tile->ref_mbs = 0;

  374.             if (p || b) {

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

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

  377.                     return AVERROR_INVALIDDATA;

  378.                 }

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

  380.                 ref_tile++;

  381.             }

  382.             tile++;

  383.         }

  384.     }

  385. 

  386.     return 0;

  387. }

  388. 

  389. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  390.                               int tile_width, int tile_height)

  391. {

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

  393.     IVIBandDesc *band;

  394. 

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

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

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

  398. 

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

  400.             t_width  >>= 1;

  401.             t_height >>= 1;

  402.         }

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

  404.             return AVERROR(EINVAL);

  405. 

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

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

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

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

  410.             band->num_tiles = x_tiles * y_tiles;

  411. 

  412.             av_freep(&band->tiles);

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

  414.             if (!band->tiles)

  415.                 return AVERROR(ENOMEM);

  416. 

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

  418.              * and quant */

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

  420.                                  p, b, t_height, t_width);

  421.             if (ret < 0)

  422.                 return ret;

  423.         }

  424.     }

  425. 

  426.     return 0;

  427. }

  428. 

  429. /*

  430.  *  Decode size of the tile data.

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

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

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

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

  435.  *

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

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

  438.  */

  439. static int ivi_dec_tile_data_size(GetBitContext *gb)

  440. {

  441.     int    len;

  442. 

  443.     len = 0;

  444.     if (get_bits1(gb)) {

  445.         len = get_bits(gb, 8);

  446.         if (len == 255)

  447.             len = get_bits_long(gb, 24);

  448.     }

  449. 

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

  451.     align_get_bits(gb);

  452. 

  453.     return len;

  454. }

  455. 

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

  457.                             int blk_size)

  458. {

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

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

  461. 

  462.     if (min_size > buf_size)

  463.         return AVERROR_INVALIDDATA;

  464. 

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

  466.                        band->pitch, blk_size);

  467. 

  468.     return 0;

  469. }

  470. 

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

  472.                                    ivi_mc_func mc, int mv_x, int mv_y,

  473.                                    int *prev_dc, int is_intra, int mc_type,

  474.                                    uint32_t quant, int offs,

  475.                                    AVCodecContext *avctx)

  476. {

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

  478.     RVMapDesc *rvmap = band->rv_map;

  479.     uint8_t col_flags[8];

  480.     int32_t trvec[64];

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

  482.     int pos, run, val;

  483.     int blk_size   = band->blk_size;

  484.     int num_coeffs = blk_size * blk_size;

  485.     int col_mask   = blk_size - 1;

  486.     int scan_pos   = -1;

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

  488.                      band->transform_size;

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

  490. 

  491.     if (min_size > buf_size)

  492.         return AVERROR_INVALIDDATA;

  493. 

  494.     if (!band->scan) {

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

  496.         return AVERROR_INVALIDDATA;

  497.     }

  498. 

  499.     /* zero transform vector */

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

  501.     /* zero column flags */

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

  503.     while (scan_pos <= num_coeffs) {

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

  505.                        IVI_VLC_BITS, 1);

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

  507.             break; /* End of block */

  508. 

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

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

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

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

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

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

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

  516.         } else {

  517.             if (sym >= 256U) {

  518.                 av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %"PRIu32".\n", sym);

  519.                 return AVERROR_INVALIDDATA;

  520.             }

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

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

  523.         }

  524. 

  525.         /* de-zigzag and dequantize */

  526.         scan_pos += run;

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

  528.             break;

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

  530. 

  531.         if (!val)

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

  533. 

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

  535.         if (q > 1)

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

  537.         trvec[pos] = val;

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

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

  540.     }

  541. 

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

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

  544. 

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

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

  547.         *prev_dc     += trvec[0];

  548.         trvec[0]      = *prev_dc;

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

  550.     }

  551. 

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

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

  554.         return AVERROR_INVALIDDATA;

  555.     }

  556. 

  557.     /* apply inverse transform */

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

  559.                         band->pitch, col_flags);

  560. 

  561.     /* apply motion compensation */

  562.     if (!is_intra)

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

  564. 

  565.     return 0;

  566. }

  567. /*

  568.  *  Decode block data:

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

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

  571.  *  in order to reconstruct the picture.

  572.  *

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

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

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

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

  577.  */

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

  579.                              IVITile *tile, AVCodecContext *avctx)

  580. {

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

  582.     int mv_x = 0, mv_y = 0;

  583.     int32_t prev_dc;

  584.     uint32_t cbp, quant, buf_offs;

  585.     IVIMbInfo *mb;

  586.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  587.     const uint8_t *scale_tab;

  588. 

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

  590.     prev_dc    = 0;

  591.     blk_size   = band->blk_size;

  592.     /* number of blocks per mb */

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

  594.     if (blk_size == 8) {

  595.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  596.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  597.     } else {

  598.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  599.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  600.     }

  601. 

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

  603.         is_intra = !mb->type;

  604.         cbp      = mb->cbp;

  605.         buf_offs = mb->buf_offs;

  606. 

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

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

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

  610.         else

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

  612. 

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

  614.         if (scale_tab)

  615.             quant = scale_tab[quant];

  616. 

  617.         if (!is_intra) {

  618.             mv_x = mb->mv_x;

  619.             mv_y = mb->mv_y;

  620.             if (band->is_halfpel) {

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

  622.                 mv_x >>= 1;

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

  624.             }

  625.             if (mb->type) {

  626.                 int dmv_x, dmv_y, cx, cy;

  627. 

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

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

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

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

  632. 

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

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

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

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

  637.                     return AVERROR_INVALIDDATA;

  638.                 }

  639.             }

  640.         }

  641. 

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

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

  644.             if (blk & 1) {

  645.                 buf_offs += blk_size;

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

  647.                 buf_offs -= blk_size;

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

  649.             }

  650. 

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

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

  653.                                               mv_x, mv_y, &prev_dc, is_intra,

  654.                                               mc_type, quant, buf_offs, avctx);

  655.                 if (ret < 0)

  656.                     return ret;

  657.             } else {

  658.                 /* block not coded */

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

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

  661.                 if (is_intra) {

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

  663.                     if (ret < 0)

  664.                         return ret;

  665.                 } else {

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

  667.                                  mv_x, mv_y, mc_type);

  668.                     if (ret < 0)

  669.                         return ret;

  670.                 }

  671.             }

  672. 

  673.             cbp >>= 1;

  674.         }// for blk

  675.     }// for mbn

  676. 

  677.     align_get_bits(gb);

  678. 

  679.     return 0;

  680. }

  681. 

  682. /**

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

  684.  *  compensation respectively.

  685.  *

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

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

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

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

  690.  */

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

  692.                                   IVITile *tile, int32_t mv_scale)

  693. {

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

  695.     int             offs, mb_offset, row_offset, ret;

  696.     IVIMbInfo       *mb, *ref_mb;

  697.     const int16_t   *src;

  698.     int16_t         *dst;

  699.     ivi_mc_func     mc_no_delta_func;

  700. 

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

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

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

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

  705.         return AVERROR_INVALIDDATA;

  706.     }

  707. 

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

  709.     mb         = tile->mbs;

  710.     ref_mb     = tile->ref_mbs;

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

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

  713. 

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

  715.         mb_offset = offs;

  716. 

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

  718.             mb->xpos     = x;

  719.             mb->ypos     = y;

  720.             mb->buf_offs = mb_offset;

  721. 

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

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

  724. 

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

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

  727.                 mb->mv_x    = 0;

  728.                 mb->mv_y    = 0;

  729.             }

  730. 

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

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

  733. 

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

  735.                 /* motion vector inheritance */

  736.                 if (mv_scale) {

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

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

  739.                 } else {

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

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

  742.                 }

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

  744.                 {

  745.                     int dmv_x, dmv_y, cx, cy;

  746. 

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

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

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

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

  751. 

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

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

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

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

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

  757.                         return AVERROR_INVALIDDATA;

  758.                     }

  759.                 }

  760.             }

  761. 

  762.             mb++;

  763.             if (ref_mb)

  764.                 ref_mb++;

  765.             mb_offset += band->mb_size;

  766.         } // for x

  767.         offs += row_offset;

  768.     } // for y

  769. 

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

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

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

  773.                                                  : ff_ivi_mc_4x4_no_delta;

  774. 

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

  776.             mv_x = mb->mv_x;

  777.             mv_y = mb->mv_y;

  778.             if (!band->is_halfpel) {

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

  780.             } else {

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

  782.                 mv_x >>= 1;

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

  784.             }

  785. 

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

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

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

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

  790.                              mv_x, mv_y, mc_type);

  791.                 if (ret < 0)

  792.                     return ret;

  793.             }

  794.         }

  795.     } else {

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

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

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

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

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

  801.             src += band->pitch;

  802.             dst += band->pitch;

  803.         }

  804.     }

  805. 

  806.     return 0;

  807. }

  808. 

  809. 

  810. #ifdef DEBUG

  811. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  812. {

  813.     int         x, y;

  814.     int16_t     *src, checksum;

  815. 

  816.     src = band->buf;

  817.     checksum = 0;

  818. 

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

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

  821.             checksum += src[x];

  822. 

  823.     return checksum;

  824. }

  825. #endif

  826. 

  827. /*

  828.  *  Convert and output the current plane.

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

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

  831.  *

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

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

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

  835.  */

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

  837. {

  838.     int             x, y;

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

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

  841. 

  842.     if (!src)

  843.         return;

  844. 

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

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

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

  848.         src += pitch;

  849.         dst += dst_pitch;

  850.     }

  851. }

  852. 

  853. /**

  854.  *  Decode an Indeo 4 or 5 band.

  855.  *

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

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

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

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

  860.  */

  861. static int decode_band(IVI45DecContext *ctx,

  862.                        IVIBandDesc *band, AVCodecContext *avctx)

  863. {

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

  865.     IVITile     *tile;

  866. 

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

  868.     if (!band->buf) {

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

  870.         return AVERROR_INVALIDDATA;

  871.     }

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

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

  874. 

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

  876.     if (result) {

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

  878.                result);

  879.         return result;

  880.     }

  881. 

  882.     if (band->is_empty) {

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

  884.         return AVERROR_INVALIDDATA;

  885.     }

  886. 

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

  888. 

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

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

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

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

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

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

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

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

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

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

  899.     }

  900. 

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

  902. 

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

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

  905. 

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

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

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

  909.             return AVERROR_INVALIDDATA;

  910.         }

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

  912.         if (tile->is_empty) {

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

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

  915.             if (result < 0)

  916.                 break;

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

  918.         } else {

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

  920.             if (!tile->data_size) {

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

  922.                 result = AVERROR_INVALIDDATA;

  923.                 break;

  924.             }

  925. 

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

  927.             if (result < 0)

  928.                 break;

  929. 

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

  931.             if (result < 0) {

  932.                 av_log(avctx, AV_LOG_ERROR,

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

  934.                 break;

  935.             }

  936. 

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

  938.                 av_log(avctx, AV_LOG_ERROR,

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

  940.                 result = AVERROR_INVALIDDATA;

  941.                 break;

  942.             }

  943. 

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

  945.         }

  946.     }

  947. 

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

  949.      * reverse order */

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

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

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

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

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

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

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

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

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

  959.     }

  960. 

  961. #ifdef DEBUG

  962.     if (band->checksum_present) {

  963.         uint16_t chksum = ivi_calc_band_checksum(band);

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

  965.             av_log(avctx, AV_LOG_ERROR,

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

  967.                    "received: %"PRIx32", calculated: %"PRIx16"\n",

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

  969.         }

  970.     }

  971. #endif

  972. 

  973.     align_get_bits(&ctx->gb);

  974. 

  975.     return result;

  976. }

  977. 

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

  979.                         AVPacket *avpkt)

  980. {

  981.     IVI45DecContext *ctx = avctx->priv_data;

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

  983.     AVFrame       *frame = data;

  984.     int             buf_size = avpkt->size;

  985.     int             result, p, b;

  986. 

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

  988.     ctx->frame_data = buf;

  989.     ctx->frame_size = buf_size;

  990. 

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

  992.     if (result) {

  993.         av_log(avctx, AV_LOG_ERROR,

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

  995.         return result;

  996.     }

  997.     if (ctx->gop_invalid)

  998.         return AVERROR_INVALIDDATA;

  999. 

  1000.     if (ctx->gop_flags & IVI5_IS_PROTECTED) {

  1001.         avpriv_report_missing_feature(avctx, "Password-protected clip!\n");

  1002.         return AVERROR_PATCHWELCOME;

  1003.     }

  1004. 

  1005.     if (!ctx->planes[0].bands) {

  1006.         av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");

  1007.         return AVERROR_INVALIDDATA;

  1008.     }

  1009. 

  1010.     ctx->switch_buffers(ctx);

  1011. 

  1012.     //{ START_TIMER;

  1013. 

  1014.     if (ctx->is_nonnull_frame(ctx)) {

  1015.         ctx->buf_invalid[ctx->dst_buf] = 1;

  1016.         for (p = 0; p < 3; p++) {

  1017.             for (b = 0; b < ctx->planes[p].num_bands; b++) {

  1018.                 result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);

  1019.                 if (result < 0) {

  1020.                     av_log(avctx, AV_LOG_ERROR,

  1021.                            "Error while decoding band: %d, plane: %d\n", b, p);

  1022.                     return result;

  1023.                 }

  1024.             }

  1025.         }

  1026.         ctx->buf_invalid[ctx->dst_buf] = 0;

  1027.     } else {

  1028.         if (ctx->is_scalable)

  1029.             return AVERROR_INVALIDDATA;

  1030. 

  1031.         for (p = 0; p < 3; p++) {

  1032.             if (!ctx->planes[p].bands[0].buf)

  1033.                 return AVERROR_INVALIDDATA;

  1034.         }

  1035.     }

  1036.     if (ctx->buf_invalid[ctx->dst_buf])

  1037.         return -1;

  1038. 

  1039.     //STOP_TIMER("decode_planes"); }

  1040. 

  1041.     /* If the bidirectional mode is enabled, next I and the following P

  1042.      * frame will be sent together. Unfortunately the approach below seems

  1043.      * to be the only way to handle the B-frames mode.

  1044.      * That's exactly the same Intel decoders do.

  1045.      */

  1046.     if (avctx->codec_id == AV_CODEC_ID_INDEO4 &&

  1047.         ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {

  1048.             // skip version string

  1049.         while (get_bits(&ctx->gb, 8)) {

  1050.             if (get_bits_left(&ctx->gb) < 8)

  1051.                 return AVERROR_INVALIDDATA;

  1052.         }

  1053. 

  1054.         skip_bits_long(&ctx->gb, 64);  // skip padding, TODO: implement correct 8-bytes alignment

  1055.         if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)

  1056.             av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");

  1057.     }

  1058. 

  1059.     if (!ctx->is_nonnull_frame(ctx))

  1060.         return buf_size;

  1061. 

  1062.     result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  1063.     if (result < 0)

  1064.         return result;

  1065. 

  1066.     if ((result = ff_get_buffer(avctx, frame, 0)) < 0)

  1067.         return result;

  1068. 

  1069.     if (ctx->is_scalable) {

  1070.         if (avctx->codec_id == AV_CODEC_ID_INDEO4)

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

  1072.         else

  1073.             ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1074.     } else {

  1075.         ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1076.     }

  1077. 

  1078.     ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);

  1079.     ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);

  1080. 

  1081.     *got_frame = 1;

  1082. 

  1083.     return buf_size;

  1084. }

  1085. 

  1086. /**

  1087.  *  Close Indeo5 decoder and clean up its context.

  1088.  */

  1089. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  1090. {

  1091.     IVI45DecContext *ctx = avctx->priv_data;

  1092. 

  1093.     ivi_free_buffers(&ctx->planes[0]);

  1094. 

  1095.     if (ctx->mb_vlc.cust_tab.table)

  1096.         ff_free_vlc(&ctx->mb_vlc.cust_tab);

  1097. 

  1098. #if IVI4_STREAM_ANALYSER

  1099.     if (avctx->codec_id == AV_CODEC_ID_INDEO4) {

  1100.     if (ctx->is_scalable)

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

  1102.     if (ctx->uses_tiling)

  1103.         av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");

  1104.     if (ctx->has_b_frames)

  1105.         av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");

  1106.     if (ctx->has_transp)

  1107.         av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");

  1108.     if (ctx->uses_haar)

  1109.         av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");

  1110.     if (ctx->uses_fullpel)

  1111.         av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");

  1112.     }

  1113. #endif

  1114. 

  1115.     return 0;

  1116. }

  1117. 

  1118. 

  1119. /**

  1120.  *  Scan patterns shared between indeo4 and indeo5

  1121.  */

  1122. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1123.     0,  8, 16, 24, 32, 40, 48, 56,

  1124.     1,  9, 17, 25, 33, 41, 49, 57,

  1125.     2, 10, 18, 26, 34, 42, 50, 58,

  1126.     3, 11, 19, 27, 35, 43, 51, 59,

  1127.     4, 12, 20, 28, 36, 44, 52, 60,

  1128.     5, 13, 21, 29, 37, 45, 53, 61,

  1129.     6, 14, 22, 30, 38, 46, 54, 62,

  1130.     7, 15, 23, 31, 39, 47, 55, 63

  1131. };

  1132. 

  1133. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1134.      0,  1,  2,  3,  4,  5,  6,  7,

  1135.      8,  9, 10, 11, 12, 13, 14, 15,

  1136.     16, 17, 18, 19, 20, 21, 22, 23,

  1137.     24, 25, 26, 27, 28, 29, 30, 31,

  1138.     32, 33, 34, 35, 36, 37, 38, 39,

  1139.     40, 41, 42, 43, 44, 45, 46, 47,

  1140.     48, 49, 50, 51, 52, 53, 54, 55,

  1141.     56, 57, 58, 59, 60, 61, 62, 63

  1142. };

  1143. 

  1144. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1145.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1146. };

  1147. 

  1148. 

  1149. /**

  1150.  *  Run-value (RLE) tables.

  1151.  */

  1152. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1153. {   /* MapTab0 */

  1154.     5, /* eob_sym */

  1155.     2, /* esc_sym */

  1156.     /* run table */

  1157.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1158.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1159.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1160.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  1161.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1162.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1163.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1164.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1165.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1166.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1167.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1168.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1169.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1170.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1171.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1172.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1173. 

  1174.     /* value table */

  1175.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1176.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1177.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1178.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1179.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1180.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1181.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1182.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1183.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1184.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1185.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1186.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1187.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1188.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1189.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1190.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1191. },{

  1192.     /* MapTab1 */

  1193.     0,  /* eob_sym */

  1194.     38, /* esc_sym */

  1195.     /* run table */

  1196.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1197.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1198.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1199.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1200.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1201.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1202.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1203.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1204.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1205.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1206.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1207.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1208.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1209.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1210.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1211.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1212. 

  1213.     /* value table */

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

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

  1216.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

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

  1218.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1219.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

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

  1221.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1222.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1223.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1224.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1225.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1226.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1227.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1228.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1229.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1230. },{

  1231.     /* MapTab2 */

  1232.     2,  /* eob_sym */

  1233.     11, /* esc_sym */

  1234.     /* run table */

  1235.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1236.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1237.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1238.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1239.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1240.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1241.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1242.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1243.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1244.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1245.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1246.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1247.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1248.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1249.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1250.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1251. 

  1252.     /* value table */

  1253.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1254.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1255.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1256.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1257.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1258.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1259.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1260.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1261.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1262.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1263.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1264.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1265.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1266.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1267.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1268.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1269. },{

  1270.     /* MapTab3 */

  1271.     0,  /* eob_sym */

  1272.     35, /* esc_sym */

  1273.     /* run table */

  1274.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1275.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1276.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1277.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1278.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1279.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1280.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1281.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1282.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1283.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1284.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1285.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1286.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1287.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1288.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1289.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1290. 

  1291.     /* value table */

  1292.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

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

  1294.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

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

  1296.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1297.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1298.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1299.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

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

  1301.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1302.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1303.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1304.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1305.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1306.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1307.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1308. },{

  1309.     /* MapTab4 */

  1310.     0,  /* eob_sym */

  1311.     34, /* esc_sym */

  1312.     /* run table */

  1313.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1314.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1315.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1316.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1317.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1318.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1319.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1320.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1321.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1322.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1323.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1324.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1325.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1326.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1327.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1328.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1329. 

  1330.     /* value table */

  1331.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1332.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1333.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1334.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1335.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1336.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1337.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1338.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1339.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1340.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1341.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1342.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1343.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1344.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1345.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1346.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1347. },{

  1348.     /* MapTab5 */

  1349.     2,  /* eob_sym */

  1350.     33, /* esc_sym */

  1351.     /* run table */

  1352.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1353.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1354.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1355.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1356.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1357.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1358.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1359.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1360.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1361.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1362.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1363.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1364.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1365.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1366.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1367.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1368. 

  1369.     /* value table */

  1370.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1371.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1372.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1373.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1374.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1375.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1376.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1377.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1378.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1379.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1380.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1381.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1382.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1383.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1384.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1385.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1386. },{

  1387.     /* MapTab6 */

  1388.     2,  /* eob_sym */

  1389.     13, /* esc_sym */

  1390.     /* run table */

  1391.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1392.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1393.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1394.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1395.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1396.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1397.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1398.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1399.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1400.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1401.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1402.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1403.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1404.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1405.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1406.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1407. 

  1408.     /* value table */

  1409.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1410.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1411.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1412.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1413.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1414.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1415.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1416.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1417.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1418.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1419.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1420.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1421.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1422.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1423.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1424.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1425. },{

  1426.     /* MapTab7 */

  1427.     2,  /* eob_sym */

  1428.     38, /* esc_sym */

  1429.     /* run table */

  1430.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1431.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1432.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1433.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1434.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1435.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1436.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1437.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1438.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1439.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1440.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1441.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1442.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1443.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1444.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1445.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1446. 

  1447.     /* value table */

  1448.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1449.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1450.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1451.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1452.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1453.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1454.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1455.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1456.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1457.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1458.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1459.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1460.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1461.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1462.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1463.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1464. },{

  1465.     /* MapTab8 */

  1466.     4,  /* eob_sym */

  1467.     11, /* esc_sym */

  1468.     /* run table */

  1469.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

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

  1471.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1472.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1473.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1474.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1475.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1476.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1477.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1478.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1479.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1480.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1481.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1482.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1483.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1484.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1485. 

  1486.     /* value table */

  1487.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1488.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1489.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1490.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1491.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1492.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1493.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1494.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1495.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1496.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1497.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1498.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1499.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1500.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1501.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1502.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1503. }

  1504. };