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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 libavcodec/ivi_common.c

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

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #define ALT_BITSTREAM_READER_LE

  30. #include "avcodec.h"

  31. #include "get_bits.h"

  32. #include "ivi_common.h"

  33. #include "libavutil/common.h"

  34. #include "ivi_dsp.h"

  35. 

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

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

  38. 

  39. VLC ff_ivi_mb_vlc_tabs [8];

  40. VLC ff_ivi_blk_vlc_tabs[8];

  41. 

  42. /**

  43.  *  Reverses "nbits" bits of the value "val" and returns the result

  44.  *  in the least significant bits.

  45.  */

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

  47. {

  48.     uint16_t res;

  49. 

  50.     if (nbits <= 8) {

  51.         res = av_reverse[val] >> (8-nbits);

  52.     } else

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

  54. 

  55.     return res;

  56. }

  57. 

  58. int ff_ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)

  59. {

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

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

  62.     uint8_t     bits[256];

  63. 

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

  65. 

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

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

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

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

  70. 

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

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

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

  74. 

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

  76.             if (bits[pos] > IVI_VLC_BITS)

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

  78. 

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

  80.             if (!bits[pos])

  81.                 bits[pos] = 1;

  82. 

  83.             pos++;

  84.         }//for j

  85.     }//for i

  86. 

  87.     /* number of codewords = pos */

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

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

  90. }

  91. 

  92. void ff_ivi_init_static_vlc()

  93. {

  94.     int i;

  95.     static VLC table_data[8192 * 16][2];

  96.     static int initialized_vlcs = 0;

  97. 

  98.     if (initialized_vlcs)

  99.         return;

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

  101.         ff_ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;

  102.         ff_ivi_mb_vlc_tabs[i].table_allocated = 8192;

  103.         ff_ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],  &ff_ivi_mb_vlc_tabs[i],  1);

  104.         ff_ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;

  105.         ff_ivi_blk_vlc_tabs[i].table_allocated = 8192;

  106.         ff_ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i], &ff_ivi_blk_vlc_tabs[i], 1);

  107.     }

  108.     initialized_vlcs = 1;

  109. }

  110. 

  111. int ff_ivi_dec_huff_desc(GetBitContext *gb, IVIHuffDesc *desc)

  112. {

  113.     int tab_sel, i;

  114. 

  115.     tab_sel = get_bits(gb, 3);

  116.     if (tab_sel == 7) {

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

  118.         desc->num_rows = get_bits(gb, 4);

  119. 

  120.         for (i = 0; i < desc->num_rows; i++)

  121.             desc->xbits[i] = get_bits(gb, 4);

  122.     }

  123. 

  124.     return tab_sel;

  125. }

  126. 

  127. int ff_ivi_huff_desc_cmp(const IVIHuffDesc *desc1, const IVIHuffDesc *desc2)

  128. {

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

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

  131. }

  132. 

  133. void ff_ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)

  134. {

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

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

  137. }

  138. 

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

  140. {

  141.     int         p, b;

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

  143.     IVIBandDesc *band;

  144. 

  145.     ff_ivi_free_buffers(planes);

  146. 

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

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

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

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

  151. 

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

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

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

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

  156. 

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

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

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

  160.             return AVERROR(ENOMEM);

  161. 

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

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

  164.          *  has only half size */

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

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

  167. 

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

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

  170.         align_fac       = p ? 8 : 16;

  171.         width_aligned   = FFALIGN(b_width , align_fac);

  172.         height_aligned  = FFALIGN(b_height, align_fac);

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

  174. 

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

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

  177.             band->plane    = p;

  178.             band->band_num = b;

  179.             band->width    = b_width;

  180.             band->height   = b_height;

  181.             band->pitch    = width_aligned;

  182.             band->bufs[0]  = av_malloc(buf_size);

  183.             band->bufs[1]  = av_malloc(buf_size);

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

  185.                 return AVERROR(ENOMEM);

  186. 

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

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

  189.                 band->bufs[2] = av_malloc(buf_size);

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

  191.                     return AVERROR(ENOMEM);

  192.             }

  193. 

  194.             planes[p].bands[0].huff_desc.num_rows = 0; /* reset custom vlc */

  195.         }

  196.     }

  197. 

  198.     return 0;

  199. }

  200. 

  201. void av_cold ff_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.             for (t = 0; t < planes[p].bands[b].num_tiles; t++)

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

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

  214.         }

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

  216.     }

  217. }

  218. 

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

  220. {

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

  222.     IVIBandDesc *band;

  223.     IVITile     *tile, *ref_tile;

  224. 

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

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

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

  228. 

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

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

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

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

  233.             band->num_tiles = x_tiles * y_tiles;

  234. 

  235.             av_freep(&band->tiles);

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

  237.             if (!band->tiles)

  238.                 return AVERROR(ENOMEM);

  239. 

  240.             tile = band->tiles;

  241. 

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

  243.              * and quant */

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

  245. 

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

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

  248.                     tile->xpos     = x;

  249.                     tile->ypos     = y;

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

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

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

  253.                     /* calculate number of macroblocks */

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

  255.                                                       band->mb_size);

  256. 

  257.                     av_freep(&tile->mbs);

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

  259.                     if (!tile->mbs)

  260.                         return AVERROR(ENOMEM);

  261. 

  262.                     tile->ref_mbs = 0;

  263.                     if (p || b) {

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

  265.                         ref_tile++;

  266.                     }

  267. 

  268.                     tile++;

  269.                 }

  270.             }

  271. 

  272.         }// for b

  273.     }// for p

  274. 

  275.     return 0;

  276. }

  277. 

  278. int ff_ivi_dec_tile_data_size(GetBitContext *gb)

  279. {

  280.     int    len;

  281. 

  282.     len = 0;

  283.     if (get_bits1(gb)) {

  284.         len = get_bits(gb, 8);

  285.         if (len == 255)

  286.             len = get_bits_long(gb, 24);

  287.     }

  288. 

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

  290.     align_get_bits(gb);

  291. 

  292.     return len;

  293. }

  294. 

  295. int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)

  296. {

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

  298.                 pos, is_intra, mc_type, mv_x, mv_y, col_mask;

  299.     uint8_t     col_flags[8];

  300.     int32_t     prev_dc, trvec[64];

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

  302.     IVIMbInfo   *mb;

  303.     RVMapDesc   *rvmap = band->rv_map;

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

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

  306.     const uint8_t   *base_tab, *scale_tab;

  307. 

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

  309. 

  310.     blk_size   = band->blk_size;

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

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

  313.     num_coeffs = blk_size * blk_size;

  314.     if (blk_size == 8) {

  315.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  316.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  317.     } else {

  318.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  319.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  320.     }

  321. 

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

  323.         is_intra = !mb->type;

  324.         cbp      = mb->cbp;

  325.         buf_offs = mb->buf_offs;

  326. 

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

  328. 

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

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

  331. 

  332.         if (!is_intra) {

  333.             mv_x = mb->mv_x;

  334.             mv_y = mb->mv_y;

  335.             if (!band->is_halfpel) {

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

  337.             } else {

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

  339.                 mv_x >>= 1;

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

  341.             }

  342.         }

  343. 

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

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

  346.             if (blk & 1) {

  347.                 buf_offs += blk_size;

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

  349.                 buf_offs -= blk_size;

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

  351.             }

  352. 

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

  354.                 scan_pos = -1;

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

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

  357. 

  358.                 while (scan_pos <= num_coeffs) {

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

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

  361.                         break; /* End of block */

  362. 

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

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

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

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

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

  368.                     } else {

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

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

  371.                     }

  372. 

  373.                     /* de-zigzag and dequantize */

  374.                     scan_pos += run;

  375.                     if (scan_pos >= num_coeffs)

  376.                         break;

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

  378. 

  379.                     if (IVI_DEBUG && !val)

  380.                         av_log(NULL, AV_LOG_ERROR, "Val = 0 encountered!\n");

  381. 

  382.                     q = (base_tab[pos] * scale_tab[quant]) >> 8;

  383.                     if (q > 1)

  384.                         val = val * q + FFSIGN(val) * ((q >> 1) - (q & 1));

  385.                     trvec[pos] = val;

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

  387.                 }// while

  388. 

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

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

  391. 

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

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

  394.                     prev_dc      += trvec[0];

  395.                     trvec[0]      = prev_dc;

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

  397.                 }

  398. 

  399.                 /* apply inverse transform */

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

  401.                                     band->pitch, col_flags);

  402. 

  403.                 /* apply motion compensation */

  404.                 if (!is_intra)

  405.                     mc_with_delta_func(band->buf + buf_offs,

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

  407.                                        band->pitch, mc_type);

  408.             } else {

  409.                 /* block not coded */

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

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

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

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

  414.                                        band->pitch, blk_size);

  415.                 } else

  416.                     mc_no_delta_func(band->buf + buf_offs,

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

  418.                                      band->pitch, mc_type);

  419.             }

  420. 

  421.             cbp >>= 1;

  422.         }// for blk

  423.     }// for mbn

  424. 

  425.     align_get_bits(gb);

  426. 

  427.     return 0;

  428. }

  429. 

  430. void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,

  431.                                IVITile *tile, int32_t mv_scale)

  432. {

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

  434.     int             offs, mb_offset, row_offset;

  435.     IVIMbInfo       *mb, *ref_mb;

  436.     const int16_t   *src;

  437.     int16_t         *dst;

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

  439.                              int mc_type);

  440. 

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

  442.     mb         = tile->mbs;

  443.     ref_mb     = tile->ref_mbs;

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

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

  446. 

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

  448.         mb_offset = offs;

  449. 

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

  451.             mb->xpos     = x;

  452.             mb->ypos     = y;

  453.             mb->buf_offs = mb_offset;

  454. 

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

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

  457. 

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

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

  460.                 mb->mv_x    = 0;

  461.                 mb->mv_y    = 0;

  462.             }

  463. 

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

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

  466. 

  467.             if (band->inherit_mv) {

  468.                 /* motion vector inheritance */

  469.                 if (mv_scale) {

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

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

  472.                 } else {

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

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

  475.                 }

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

  477.             }

  478. 

  479.             mb++;

  480.             if (ref_mb)

  481.                 ref_mb++;

  482.             mb_offset += band->mb_size;

  483.         } // for x

  484.         offs += row_offset;

  485.     } // for y

  486. 

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

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

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

  490.                                                  : ff_ivi_mc_4x4_no_delta;

  491. 

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

  493.             mv_x = mb->mv_x;

  494.             mv_y = mb->mv_y;

  495.             if (!band->is_halfpel) {

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

  497.             } else {

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

  499.                 mv_x >>= 1;

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

  501.             }

  502. 

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

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

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

  506.                 mc_no_delta_func(band->buf + offs,

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

  508.                                  band->pitch, mc_type);

  509.             }

  510.         }

  511.     } else {

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

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

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

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

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

  517.             src += band->pitch;

  518.             dst += band->pitch;

  519.         }

  520.     }

  521. }

  522. 

  523. 

  524. #if IVI_DEBUG

  525. uint16_t ivi_calc_band_checksum (IVIBandDesc *band)

  526. {

  527.     int         x, y;

  528.     int16_t     *src, checksum;

  529. 

  530.     src = band->buf;

  531.     checksum = 0;

  532. 

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

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

  535.             checksum += src[x];

  536. 

  537.     return checksum;

  538. }

  539. 

  540. int ivi_check_band (IVIBandDesc *band, const uint8_t *ref, int pitch)

  541. {

  542.     int         x, y, result;

  543.     uint8_t     t1, t2;

  544.     int16_t    *src;

  545. 

  546.     src = band->buf;

  547.     result = 0;

  548. 

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

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

  551.             t1 = av_clip(src[x] + 128, 0, 255);

  552.             t2 = ref[x];

  553.             if (t1 != t2) {

  554.                 av_log(NULL, AV_LOG_ERROR, "Data mismatch: row %d, column %d\n",

  555.                        y / band->blk_size, x / band->blk_size);

  556.                 result = -1;

  557.             }

  558.         }

  559.         ref += pitch;

  560.     }

  561. 

  562.     return result;

  563. }

  564. #endif

  565. 

  566. void ff_ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch)

  567. {

  568.     int             x, y;

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

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

  571. 

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

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

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

  575.         src += pitch;

  576.         dst += dst_pitch;

  577.     }

  578. }

  579. 

  580. 

  581. /**

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

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

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

  585.  * startup from these descriptors.

  586.  */

  587. const IVIHuffDesc ff_ivi_mb_huff_desc[8] = {

  588.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  589.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  590.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  591.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  592.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  593.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  594.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  595.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  596. };

  597. 

  598. const IVIHuffDesc ff_ivi_blk_huff_desc[8] = {

  599.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  600.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  601.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  602.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  603.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  604.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  605.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  606.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  607. };

  608. 

  609. 

  610. /**

  611.  *  Run-value (RLE) tables.

  612.  */

  613. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  614. {   /* MapTab0 */

  615.     5, /* eob_sym */

  616.     2, /* esc_sym */

  617.     /* run table */

  618.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  619.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  620.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  621.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  622.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  623.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  624.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  625.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  626.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  627.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  628.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  629.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  630.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  631.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  632.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  633.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  634. 

  635.     /* value table */

  636.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  637.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  638.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  639.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  640.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  641.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  642.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  643.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  644.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  645.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  646.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  647.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  648.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  649.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  650.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  651.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  652. },{

  653.     /* MapTab1 */

  654.     0,  /* eob_sym */

  655.     38, /* esc_sym */

  656.     /* run table */

  657.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  658.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  659.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  660.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  661.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  662.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  663.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  664.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  665.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  666.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  667.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  668.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  669.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  670.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  671.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  672.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  673. 

  674.     /* value table */

  675.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  676.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  677.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  678.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  679.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  680.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  681.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  682.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  683.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  684.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  685.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  686.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  687.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  688.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  689.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  690.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  691. },{

  692.     /* MapTab2 */

  693.     2,  /* eob_sym */

  694.     11, /* esc_sym */

  695.     /* run table */

  696.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  697.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  698.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  699.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  700.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  701.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  702.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  703.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  704.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  705.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  706.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  707.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  708.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  709.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  710.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  711.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  712. 

  713.     /* value table */

  714.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  715.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  716.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  717.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  718.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  719.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  720.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  721.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  722.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  723.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  724.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  725.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  726.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  727.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  728.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  729.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  730. },{

  731.     /* MapTab3 */

  732.     0,  /* eob_sym */

  733.     35, /* esc_sym */

  734.     /* run table */

  735.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  736.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  737.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  738.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  739.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  740.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  741.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  742.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  743.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  744.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  745.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  746.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  747.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  748.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  749.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  750.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  751. 

  752.     /* value table */

  753.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  754.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  755.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  756.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  757.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  758.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  759.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  760.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  761.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  762.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  763.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  764.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  765.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  766.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  767.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  768.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  769. },{

  770.     /* MapTab4 */

  771.     0,  /* eob_sym */

  772.     34, /* esc_sym */

  773.     /* run table */

  774.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  775.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  776.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  777.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  778.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  779.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  780.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  781.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  782.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  783.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  784.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  785.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  786.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  787.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  788.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  789.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  790. 

  791.     /* value table */

  792.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  793.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  794.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  795.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  796.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  797.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  798.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  799.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  800.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  801.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  802.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  803.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  804.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  805.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  806.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  807.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  808. },{

  809.     /* MapTab5 */

  810.     2,  /* eob_sym */

  811.     33, /* esc_sym */

  812.     /* run table */

  813.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  814.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  815.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  816.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  817.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  818.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  819.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  820.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  821.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  822.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  823.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  824.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  825.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  826.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  827.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  828.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  829. 

  830.     /* value table */

  831.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  832.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  833.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  834.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  835.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  836.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  837.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  838.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  839.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  840.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  841.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  842.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  843.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  844.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  845.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  846.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  847. },{

  848.     /* MapTab6 */

  849.     2,  /* eob_sym */

  850.     13, /* esc_sym */

  851.     /* run table */

  852.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  853.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  854.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  855.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  856.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  857.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  858.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  859.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  860.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  861.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  862.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  863.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  864.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  865.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  866.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  867.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  868. 

  869.     /* value table */

  870.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  871.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  872.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  873.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  874.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  875.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  876.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  877.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  878.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  879.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  880.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  881.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  882.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  883.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  884.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  885.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  886. },{

  887.     /* MapTab7 */

  888.     2,  /* eob_sym */

  889.     38, /* esc_sym */

  890.     /* run table */

  891.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  892.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  893.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  894.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  895.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  896.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  897.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  898.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  899.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  900.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  901.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  902.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  903.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  904.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  905.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  906.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  907. 

  908.     /* value table */

  909.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  910.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  911.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  912.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  913.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  914.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  915.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  916.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  917.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  918.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  919.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  920.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  921.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  922.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  923.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  924.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  925. },{

  926.     /* MapTab8 */

  927.     4,  /* eob_sym */

  928.     11, /* esc_sym */

  929.     /* run table */

  930.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  931.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  932.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  933.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  934.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  935.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  936.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  937.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  938.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  939.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  940.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  941.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  942.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  943.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  944.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  945.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  946. 

  947.     /* value table */

  948.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  949.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  950.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  951.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  952.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  953.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  954.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  955.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  956.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  957.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  958.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  959.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  960.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  961.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  962.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  963.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  964. }

  965. };