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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 Libav.

  7.  *

  8.  * Libav 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.  * Libav 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 Libav; 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 "avcodec.h"

  32. #include "get_bits.h"

  33. #include "internal.h"

  34. #include "mathops.h"

  35. #include "ivi_common.h"

  36. #include "ivi_dsp.h"

  37. 

  38. extern const IVIHuffDesc ff_ivi_mb_huff_desc[8];  ///< static macroblock huffman tables

  39. extern const IVIHuffDesc ff_ivi_blk_huff_desc[8]; ///< static block huffman tables

  40. 

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

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

  43. 

  44. /**

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

  46.  *  in the least significant bits.

  47.  */

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

  49. {

  50.     uint16_t res;

  51. 

  52.     if (nbits <= 8) {

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

  54.     } else

  55.         res = ((ff_reverse[val & 0xFF] << 8) + (ff_reverse[val >> 8])) >> (16-nbits);

  56. 

  57.     return res;

  58. }

  59. 

  60. /*

  61.  *  Generate a huffman codebook from the given descriptor

  62.  *  and convert it into the Libav VLC table.

  63.  *

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

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

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

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

  68.  */

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

  70. {

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

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

  73.     uint8_t     bits[256];

  74. 

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

  76. 

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

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

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

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

  81. 

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

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

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

  85. 

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

  87.             if (bits[pos] > IVI_VLC_BITS)

  88.                 return -1; /* invalid descriptor */

  89. 

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

  91.             if (!bits[pos])

  92.                 bits[pos] = 1;

  93. 

  94.             pos++;

  95.         }//for j

  96.     }//for i

  97. 

  98.     /* number of codewords = pos */

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

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

  101. }

  102. 

  103. void ff_ivi_init_static_vlc(void)

  104. {

  105.     int i;

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

  107.     static int initialized_vlcs = 0;

  108. 

  109.     if (initialized_vlcs)

  110.         return;

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

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

  113.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  114.         ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],  &ivi_mb_vlc_tabs[i],  1);

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

  116.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  117.         ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i], &ivi_blk_vlc_tabs[i], 1);

  118.     }

  119.     initialized_vlcs = 1;

  120. }

  121. 

  122. /*

  123.  *  Copy huffman codebook descriptors.

  124.  *

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

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

  127.  */

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

  129. {

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

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

  132. }

  133. 

  134. /*

  135.  *  Compare two huffman codebook descriptors.

  136.  *

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

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

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

  140.  */

  141. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1, const IVIHuffDesc *desc2)

  142. {

  143.     return    desc1->num_rows != desc2->num_rows

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

  145. }

  146. 

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

  148.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  149. {

  150.     int         i, result;

  151.     IVIHuffDesc new_huff;

  152. 

  153.     if (!desc_coded) {

  154.         /* select default table */

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

  156.             : &ivi_mb_vlc_tabs [7];

  157.     } else {

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

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

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

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

  162.             if (!new_huff.num_rows) {

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

  164.                 return AVERROR_INVALIDDATA;

  165.             }

  166. 

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

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

  169. 

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

  171.             if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {

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

  173. 

  174.                 if (huff_tab->cust_tab.table)

  175.                     ff_free_vlc(&huff_tab->cust_tab);

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

  177.                         &huff_tab->cust_tab, 0);

  178.                 if (result) {

  179.                     huff_tab->cust_desc.num_rows = 0; // reset faulty description

  180.                     av_log(avctx, AV_LOG_ERROR,

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

  182.                     return result;

  183.                 }

  184.             }

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

  186.         } else {

  187.             /* select one of predefined tables */

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

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

  190.         }

  191.     }

  192. 

  193.     return 0;

  194. }

  195. 

  196. /*

  197.  *  Free planes, bands and macroblocks buffers.

  198.  *

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

  200.  */

  201. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  202. {

  203.     int p, b, t;

  204. 

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

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

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

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

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

  210. 

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

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

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

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

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

  216.         }

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

  218.     }

  219. }

  220. 

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

  222. {

  223.     int         p, b;

  224.     uint32_t    b_width, b_height, align_fac, width_aligned, height_aligned, buf_size;

  225.     IVIBandDesc *band;

  226. 

  227.     ivi_free_buffers(planes);

  228. 

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

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

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

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

  233. 

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

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

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

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

  238. 

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

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

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

  242.             return AVERROR(ENOMEM);

  243. 

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

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

  246.          *  has only half size */

  247.         b_width  = planes[p].num_bands == 1 ? planes[p].width  : (planes[p].width  + 1) >> 1;

  248.         b_height = planes[p].num_bands == 1 ? planes[p].height : (planes[p].height + 1) >> 1;

  249. 

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

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

  252.         align_fac       = p ? 8 : 16;

  253.         width_aligned   = FFALIGN(b_width , align_fac);

  254.         height_aligned  = FFALIGN(b_height, align_fac);

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

  256. 

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

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

  259.             band->plane    = p;

  260.             band->band_num = b;

  261.             band->width    = b_width;

  262.             band->height   = b_height;

  263.             band->pitch    = width_aligned;

  264.             band->aheight  = height_aligned;

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

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

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

  268.                 return AVERROR(ENOMEM);

  269. 

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

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

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

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

  274.                     return AVERROR(ENOMEM);

  275.             }

  276. 

  277.             planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0; /* reset custom vlc */

  278.         }

  279.     }

  280. 

  281.     return 0;

  282. }

  283. 

  284. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)

  285. {

  286.     int         p, b, x, y, x_tiles, y_tiles, t_width, t_height;

  287.     IVIBandDesc *band;

  288.     IVITile     *tile, *ref_tile;

  289. 

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

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

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

  293. 

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

  295.             t_width  >>= 1;

  296.             t_height >>= 1;

  297.         }

  298. 

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

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

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

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

  303.             band->num_tiles = x_tiles * y_tiles;

  304. 

  305.             av_freep(&band->tiles);

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

  307.             if (!band->tiles)

  308.                 return AVERROR(ENOMEM);

  309. 

  310.             tile = band->tiles;

  311. 

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

  313.              * and quant */

  314.             ref_tile = planes[0].bands[0].tiles;

  315. 

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

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

  318.                     tile->xpos     = x;

  319.                     tile->ypos     = y;

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

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

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

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

  324.                     /* calculate number of macroblocks */

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

  326.                                                       band->mb_size);

  327. 

  328.                     av_freep(&tile->mbs);

  329.                     tile->mbs = av_malloc(tile->num_MBs * sizeof(IVIMbInfo));

  330.                     if (!tile->mbs)

  331.                         return AVERROR(ENOMEM);

  332. 

  333.                     tile->ref_mbs = 0;

  334.                     if (p || b) {

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

  336.                         ref_tile++;

  337.                     }

  338. 

  339.                     tile++;

  340.                 }

  341.             }

  342. 

  343.         }// for b

  344.     }// for p

  345. 

  346.     return 0;

  347. }

  348. 

  349. /*

  350.  *  Decode size of the tile data.

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

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

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

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

  355.  *

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

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

  358.  */

  359. static int ivi_dec_tile_data_size(GetBitContext *gb)

  360. {

  361.     int    len;

  362. 

  363.     len = 0;

  364.     if (get_bits1(gb)) {

  365.         len = get_bits(gb, 8);

  366.         if (len == 255)

  367.             len = get_bits_long(gb, 24);

  368.     }

  369. 

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

  371.     align_get_bits(gb);

  372. 

  373.     return len;

  374. }

  375. 

  376. /*

  377.  *  Decode block data:

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

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

  380.  *  in order to reconstruct the picture.

  381.  *

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

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

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

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

  386.  */

  387. static int ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile,

  388.                              AVCodecContext *avctx)

  389. {

  390.     int         mbn, blk, num_blocks, num_coeffs, blk_size, scan_pos, run, val,

  391.                 pos, is_intra, mc_type = 0, mv_x, mv_y, col_mask;

  392.     uint8_t     col_flags[8];

  393.     int32_t     prev_dc, trvec[64];

  394.     uint32_t    cbp, sym, lo, hi, quant, buf_offs, q;

  395.     IVIMbInfo   *mb;

  396.     RVMapDesc   *rvmap = band->rv_map;

  397.     void (*mc_with_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);

  398.     void (*mc_no_delta_func)  (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);

  399.     const uint16_t  *base_tab;

  400.     const uint8_t   *scale_tab;

  401. 

  402.     prev_dc = 0; /* init intra prediction for the DC coefficient */

  403. 

  404.     blk_size   = band->blk_size;

  405.     col_mask   = blk_size - 1; /* column mask for tracking non-zero coeffs */

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

  407.     num_coeffs = blk_size * blk_size;

  408.     if (blk_size == 8) {

  409.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  410.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  411.     } else {

  412.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  413.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  414.     }

  415. 

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

  417.         is_intra = !mb->type;

  418.         cbp      = mb->cbp;

  419.         buf_offs = mb->buf_offs;

  420. 

  421.         quant = av_clip(band->glob_quant + mb->q_delta, 0, 23);

  422. 

  423.         base_tab  = is_intra ? band->intra_base  : band->inter_base;

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

  425.         if (scale_tab)

  426.             quant = scale_tab[quant];

  427. 

  428.         if (!is_intra) {

  429.             mv_x = mb->mv_x;

  430.             mv_y = mb->mv_y;

  431.             if (band->is_halfpel) {

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

  433.                 mv_x >>= 1;

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

  435.             }

  436.             if (mb->type) {

  437.                 int dmv_x, dmv_y, cx, cy;

  438. 

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

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

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

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

  443. 

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

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

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

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

  448.                     return AVERROR_INVALIDDATA;

  449.                 }

  450.             }

  451.         }

  452. 

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

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

  455.             if (blk & 1) {

  456.                 buf_offs += blk_size;

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

  458.                 buf_offs -= blk_size;

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

  460.             }

  461. 

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

  463.                 if (!band->scan) {

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

  465.                     return AVERROR_INVALIDDATA;

  466.                 }

  467. 

  468.                 scan_pos = -1;

  469.                 memset(trvec, 0, num_coeffs*sizeof(trvec[0])); /* zero transform vector */

  470.                 memset(col_flags, 0, sizeof(col_flags));      /* zero column flags */

  471. 

  472.                 while (scan_pos <= num_coeffs) {

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

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

  475.                         break; /* End of block */

  476. 

  477.                     if (sym == rvmap->esc_sym) { /* Escape - run/val explicitly coded using 3 vlc codes */

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

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

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

  481.                         val = IVI_TOSIGNED((hi << 6) | lo); /* merge them and convert into signed val */

  482.                     } else {

  483.                         if (sym >= 256U) {

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

  485.                             return -1;

  486.                         }

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

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

  489.                     }

  490. 

  491.                     /* de-zigzag and dequantize */

  492.                     scan_pos += run;

  493.                     if (scan_pos >= num_coeffs)

  494.                         break;

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

  496. 

  497.                     if (!val)

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

  499. 

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

  501.                     if (q > 1)

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

  503.                     trvec[pos] = val;

  504.                     col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */

  505.                 }// while

  506. 

  507.                 if (scan_pos >= num_coeffs && sym != rvmap->eob_sym)

  508.                     return -1; /* corrupt block data */

  509. 

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

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

  512.                     prev_dc      += trvec[0];

  513.                     trvec[0]      = prev_dc;

  514.                     col_flags[0] |= !!prev_dc;

  515.                 }

  516. 

  517.                 /* apply inverse transform */

  518.                 band->inv_transform(trvec, band->buf + buf_offs,

  519.                                     band->pitch, col_flags);

  520. 

  521.                 /* apply motion compensation */

  522.                 if (!is_intra)

  523.                     mc_with_delta_func(band->buf + buf_offs,

  524.                                        band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,

  525.                                        band->pitch, mc_type);

  526.             } else {

  527.                 /* block not coded */

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

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

  530.                 if (is_intra && band->dc_transform) {

  531.                     band->dc_transform(&prev_dc, band->buf + buf_offs,

  532.                                        band->pitch, blk_size);

  533.                 } else

  534.                     mc_no_delta_func(band->buf + buf_offs,

  535.                                      band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,

  536.                                      band->pitch, mc_type);

  537.             }

  538. 

  539.             cbp >>= 1;

  540.         }// for blk

  541.     }// for mbn

  542. 

  543.     align_get_bits(gb);

  544. 

  545.     return 0;

  546. }

  547. 

  548. /**

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

  550.  *  compensation respectively.

  551.  *

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

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

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

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

  556.  */

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

  558.                                   IVITile *tile, int32_t mv_scale)

  559. {

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

  561.     int             offs, mb_offset, row_offset;

  562.     IVIMbInfo       *mb, *ref_mb;

  563.     const int16_t   *src;

  564.     int16_t         *dst;

  565.     void (*mc_no_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch,

  566.                              int mc_type);

  567. 

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

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

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

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

  572.         return AVERROR_INVALIDDATA;

  573.     }

  574. 

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

  576.     mb         = tile->mbs;

  577.     ref_mb     = tile->ref_mbs;

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

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

  580. 

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

  582.         mb_offset = offs;

  583. 

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

  585.             mb->xpos     = x;

  586.             mb->ypos     = y;

  587.             mb->buf_offs = mb_offset;

  588. 

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

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

  591. 

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

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

  594.                 mb->mv_x    = 0;

  595.                 mb->mv_y    = 0;

  596.             }

  597. 

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

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

  600. 

  601.             if (band->inherit_mv) {

  602.                 /* motion vector inheritance */

  603.                 if (mv_scale) {

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

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

  606.                 } else {

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

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

  609.                 }

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

  611.             }

  612. 

  613.             mb++;

  614.             if (ref_mb)

  615.                 ref_mb++;

  616.             mb_offset += band->mb_size;

  617.         } // for x

  618.         offs += row_offset;

  619.     } // for y

  620. 

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

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

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

  624.                                                  : ff_ivi_mc_4x4_no_delta;

  625. 

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

  627.             mv_x = mb->mv_x;

  628.             mv_y = mb->mv_y;

  629.             if (!band->is_halfpel) {

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

  631.             } else {

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

  633.                 mv_x >>= 1;

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

  635.             }

  636. 

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

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

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

  640.                 mc_no_delta_func(band->buf + offs,

  641.                                  band->ref_buf + offs + mv_y * band->pitch + mv_x,

  642.                                  band->pitch, mc_type);

  643.             }

  644.         }

  645.     } else {

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

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

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

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

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

  651.             src += band->pitch;

  652.             dst += band->pitch;

  653.         }

  654.     }

  655. 

  656.     return 0;

  657. }

  658. 

  659. 

  660. #ifdef DEBUG

  661. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  662. {

  663.     int         x, y;

  664.     int16_t     *src, checksum;

  665. 

  666.     src = band->buf;

  667.     checksum = 0;

  668. 

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

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

  671.             checksum += src[x];

  672. 

  673.     return checksum;

  674. }

  675. #endif

  676. 

  677. /*

  678.  *  Convert and output the current plane.

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

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

  681.  *

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

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

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

  685.  */

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

  687. {

  688.     int             x, y;

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

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

  691. 

  692.     if (!src)

  693.         return;

  694. 

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

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

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

  698.         src += pitch;

  699.         dst += dst_pitch;

  700.     }

  701. }

  702. 

  703. /**

  704.  *  Decode an Indeo 4 or 5 band.

  705.  *

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

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

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

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

  710.  */

  711. static int decode_band(IVI45DecContext *ctx,

  712.                        IVIBandDesc *band, AVCodecContext *avctx)

  713. {

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

  715.     IVITile     *tile;

  716. 

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

  718.     if (!band->buf) {

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

  720.         return AVERROR_INVALIDDATA;

  721.     }

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

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

  724. 

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

  726.     if (result) {

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

  728.                result);

  729.         return result;

  730.     }

  731. 

  732.     if (band->is_empty) {

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

  734.         return AVERROR_INVALIDDATA;

  735.     }

  736. 

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

  738. 

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

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

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

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

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

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

  745.     }

  746. 

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

  748. 

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

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

  751. 

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

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

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

  755.             return AVERROR_INVALIDDATA;

  756.         }

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

  758.         if (tile->is_empty) {

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

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

  761.             if (result < 0)

  762.                 break;

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

  764.         } else {

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

  766.             if (!tile->data_size) {

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

  768.                 return AVERROR_INVALIDDATA;

  769.             }

  770. 

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

  772.             if (result < 0)

  773.                 break;

  774. 

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

  776.             if (result < 0 || ((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {

  777.                 av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n");

  778.                 break;

  779.             }

  780. 

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

  782.         }

  783.     }

  784. 

  785.     /* restore the selected rvmap table by applying its corrections in reverse order */

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

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

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

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

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

  791.     }

  792. 

  793. #ifdef DEBUG

  794.     if (band->checksum_present) {

  795.         uint16_t chksum = ivi_calc_band_checksum(band);

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

  797.             av_log(avctx, AV_LOG_ERROR,

  798.                    "Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",

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

  800.         }

  801.     }

  802. #endif

  803. 

  804.     align_get_bits(&ctx->gb);

  805. 

  806.     return result;

  807. }

  808. 

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

  810.                         AVPacket *avpkt)

  811. {

  812.     IVI45DecContext *ctx = avctx->priv_data;

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

  814.     int             buf_size = avpkt->size;

  815.     int             result, p, b;

  816. 

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

  818.     ctx->frame_data = buf;

  819.     ctx->frame_size = buf_size;

  820. 

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

  822.     if (result) {

  823.         av_log(avctx, AV_LOG_ERROR,

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

  825.         return -1;

  826.     }

  827.     if (ctx->gop_invalid)

  828.         return AVERROR_INVALIDDATA;

  829. 

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

  831.         av_log(avctx, AV_LOG_ERROR, "Password-protected clip!\n");

  832.         return -1;

  833.     }

  834. 

  835.     ctx->switch_buffers(ctx);

  836. 

  837.     //{ START_TIMER;

  838. 

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

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

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

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

  843.                 if (result) {

  844.                     av_log(avctx, AV_LOG_ERROR,

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

  846.                     return -1;

  847.                 }

  848.             }

  849.         }

  850.     }

  851. 

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

  853. 

  854.     /* If the bidirectional mode is enabled, next I and the following P frame will */

  855.     /* be sent together. Unfortunately the approach below seems to be the only way */

  856.     /* to handle the B-frames mode. That's exactly the same Intel decoders do.     */

  857.     if (avctx->codec_id == AV_CODEC_ID_INDEO4 && ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {

  858.         while (get_bits(&ctx->gb, 8)); // skip version string

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

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

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

  862.     }

  863. 

  864.     if (ctx->frame.data[0])

  865.         avctx->release_buffer(avctx, &ctx->frame);

  866. 

  867.     ctx->frame.reference = 0;

  868.     avcodec_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  869.     if ((result = ff_get_buffer(avctx, &ctx->frame)) < 0) {

  870.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  871.         return result;

  872.     }

  873. 

  874.     if (ctx->is_scalable) {

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

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

  877.         else

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

  879.     } else {

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

  881.     }

  882. 

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

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

  885. 

  886.     *got_frame = 1;

  887.     *(AVFrame*)data = ctx->frame;

  888. 

  889.     return buf_size;

  890. }

  891. 

  892. /**

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

  894.  */

  895. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  896. {

  897.     IVI45DecContext *ctx = avctx->priv_data;

  898. 

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

  900. 

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

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

  903. 

  904.     if (ctx->frame.data[0])

  905.         avctx->release_buffer(avctx, &ctx->frame);

  906. 

  907. #if IVI4_STREAM_ANALYSER

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

  909.     if (ctx->is_scalable)

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

  911.     if (ctx->uses_tiling)

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

  913.     if (ctx->has_b_frames)

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

  915.     if (ctx->has_transp)

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

  917.     if (ctx->uses_haar)

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

  919.     if (ctx->uses_fullpel)

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

  921.     }

  922. #endif

  923. 

  924.     return 0;

  925. }

  926. 

  927. 

  928. /**

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

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

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

  932.  * startup from these descriptors.

  933.  */

  934. const IVIHuffDesc ff_ivi_mb_huff_desc[8] = {

  935.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  936.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  937.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  938.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  939.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  940.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  941.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  942.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  943. };

  944. 

  945. const IVIHuffDesc ff_ivi_blk_huff_desc[8] = {

  946.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  947.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  948.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  949.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  950.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  951.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  952.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  953.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  954. };

  955. 

  956. 

  957. /**

  958.  *  Scan patterns shared between indeo4 and indeo5

  959.  */

  960. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  961.     0,  8, 16, 24, 32, 40, 48, 56,

  962.     1,  9, 17, 25, 33, 41, 49, 57,

  963.     2, 10, 18, 26, 34, 42, 50, 58,

  964.     3, 11, 19, 27, 35, 43, 51, 59,

  965.     4, 12, 20, 28, 36, 44, 52, 60,

  966.     5, 13, 21, 29, 37, 45, 53, 61,

  967.     6, 14, 22, 30, 38, 46, 54, 62,

  968.     7, 15, 23, 31, 39, 47, 55, 63

  969. };

  970. 

  971. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  972.      0,  1,  2,  3,  4,  5,  6,  7,

  973.      8,  9, 10, 11, 12, 13, 14, 15,

  974.     16, 17, 18, 19, 20, 21, 22, 23,

  975.     24, 25, 26, 27, 28, 29, 30, 31,

  976.     32, 33, 34, 35, 36, 37, 38, 39,

  977.     40, 41, 42, 43, 44, 45, 46, 47,

  978.     48, 49, 50, 51, 52, 53, 54, 55,

  979.     56, 57, 58, 59, 60, 61, 62, 63

  980. };

  981. 

  982. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  983.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  984. };

  985. 

  986. 

  987. /**

  988.  *  Run-value (RLE) tables.

  989.  */

  990. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  991. {   /* MapTab0 */

  992.     5, /* eob_sym */

  993.     2, /* esc_sym */

  994.     /* run table */

  995.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  996.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  997.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  998.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  999.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1000.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1001.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1002.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1003.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1004.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1005.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1006.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1007.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1008.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1009.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1010.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1011. 

  1012.     /* value table */

  1013.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1014.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1015.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1016.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1017.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1018.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1019.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1020.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1021.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1022.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1023.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1024.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1025.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1026.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1027.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1028.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1029. },{

  1030.     /* MapTab1 */

  1031.     0,  /* eob_sym */

  1032.     38, /* esc_sym */

  1033.     /* run table */

  1034.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1035.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1036.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1037.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1038.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1039.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1040.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1041.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1042.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1043.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1044.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1045.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1046.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1047.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1048.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1049.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1050. 

  1051.     /* value table */

  1052.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1053.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1054.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  1055.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  1056.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1057.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1058.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1059.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1060.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1061.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1062.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1063.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1064.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1065.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1066.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1067.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1068. },{

  1069.     /* MapTab2 */

  1070.     2,  /* eob_sym */

  1071.     11, /* esc_sym */

  1072.     /* run table */

  1073.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1074.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1075.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1076.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1077.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1078.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1079.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1080.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1081.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1082.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1083.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1084.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1085.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1086.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1087.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1088.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1089. 

  1090.     /* value table */

  1091.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1092.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1093.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1094.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1095.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1096.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1097.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1098.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1099.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1100.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1101.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1102.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1103.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1104.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1105.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1106.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1107. },{

  1108.     /* MapTab3 */

  1109.     0,  /* eob_sym */

  1110.     35, /* esc_sym */

  1111.     /* run table */

  1112.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1113.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1114.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1115.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1116.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1117.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1118.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1119.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1120.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1121.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1122.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1123.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1124.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1125.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1126.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1127.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1128. 

  1129.     /* value table */

  1130.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1131.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1132.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1133.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1134.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1135.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1136.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1137.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1138.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1139.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1140.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1141.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1142.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1143.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1144.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1145.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1146. },{

  1147.     /* MapTab4 */

  1148.     0,  /* eob_sym */

  1149.     34, /* esc_sym */

  1150.     /* run table */

  1151.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1152.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1153.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1154.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1155.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1156.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1157.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1158.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1159.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1160.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1161.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1162.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1163.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1164.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1165.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1166.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1167. 

  1168.     /* value table */

  1169.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1170.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1171.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1172.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1173.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1174.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1175.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1176.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1177.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1178.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1179.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1180.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1181.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1182.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1183.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1184.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1185. },{

  1186.     /* MapTab5 */

  1187.     2,  /* eob_sym */

  1188.     33, /* esc_sym */

  1189.     /* run table */

  1190.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1191.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1192.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1193.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1194.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1195.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1196.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1197.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1198.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1199.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1200.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1201.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1202.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1203.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1204.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1205.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1206. 

  1207.     /* value table */

  1208.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1209.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1210.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1211.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1212.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1213.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1214.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1215.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1216.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1217.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1218.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1219.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1220.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1221.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1222.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1223.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1224. },{

  1225.     /* MapTab6 */

  1226.     2,  /* eob_sym */

  1227.     13, /* esc_sym */

  1228.     /* run table */

  1229.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1230.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1231.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1232.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1233.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1234.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1235.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1236.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1237.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1238.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1239.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1240.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1241.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1242.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1243.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1244.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1245. 

  1246.     /* value table */

  1247.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1248.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1249.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1250.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1251.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1252.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1253.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1254.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1255.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1256.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1257.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1258.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1259.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1260.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1261.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1262.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1263. },{

  1264.     /* MapTab7 */

  1265.     2,  /* eob_sym */

  1266.     38, /* esc_sym */

  1267.     /* run table */

  1268.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1269.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1270.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1271.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1272.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1273.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1274.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1275.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1276.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1277.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1278.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1279.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1280.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1281.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1282.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1283.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1284. 

  1285.     /* value table */

  1286.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1287.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1288.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1289.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1290.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1291.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1292.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1293.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1294.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1295.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1296.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1297.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1298.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1299.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1300.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1301.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1302. },{

  1303.     /* MapTab8 */

  1304.     4,  /* eob_sym */

  1305.     11, /* esc_sym */

  1306.     /* run table */

  1307.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1308.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1309.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1310.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1311.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1312.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1313.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1314.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1315.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1316.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1317.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1318.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1319.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1320.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1321.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1322.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1323. 

  1324.     /* value table */

  1325.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1326.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1327.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1328.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1329.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1330.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1331.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1332.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1333.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1334.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1335.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1336.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1337.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1338.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1339.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1340.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1341. }

  1342. };