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FFmpeg/libavcodec/ivi_common.c

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  1. /*

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

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

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

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

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

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

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

  21.  */

  22. 

  23. /**

  24.  * @file

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

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #define BITSTREAM_READER_LE

  30. #include "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.  *  Reverse "nbits" bits of the value "val" and return 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(void)

  93. {

  94.     int i;

  95.     static VLC_TYPE 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, int desc_coded, int which_tab,

  112.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  113. {

  114.     int         i, result;

  115.     IVIHuffDesc new_huff;

  116. 

  117.     if (!desc_coded) {

  118.         /* select default table */

  119.         huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[7]

  120.             : &ff_ivi_mb_vlc_tabs [7];

  121.     } else {

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

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

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

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

  126. 

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

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

  129. 

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

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

  132.                 ff_ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);

  133. 

  134.                 if (huff_tab->cust_tab.table)

  135.                     ff_free_vlc(&huff_tab->cust_tab);

  136.                 result = ff_ivi_create_huff_from_desc(&huff_tab->cust_desc,

  137.                         &huff_tab->cust_tab, 0);

  138.                 if (result) {

  139.                     av_log(avctx, AV_LOG_ERROR,

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

  141.                     return -1;

  142.                 }

  143.             }

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

  145.         } else {

  146.             /* select one of predefined tables */

  147.             huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[huff_tab->tab_sel]

  148.                 : &ff_ivi_mb_vlc_tabs [huff_tab->tab_sel];

  149.         }

  150.     }

  151. 

  152.     return 0;

  153. }

  154. 

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

  156. {

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

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

  159. }

  160. 

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

  162. {

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

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

  165. }

  166. 

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

  168. {

  169.     int         p, b;

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

  171.     IVIBandDesc *band;

  172. 

  173.     ff_ivi_free_buffers(planes);

  174. 

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

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

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

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

  179. 

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

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

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

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

  184. 

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

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

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

  188.             return AVERROR(ENOMEM);

  189. 

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

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

  192.          *  has only half size */

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

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

  195. 

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

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

  198.         align_fac       = p ? 8 : 16;

  199.         width_aligned   = FFALIGN(b_width , align_fac);

  200.         height_aligned  = FFALIGN(b_height, align_fac);

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

  202. 

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

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

  205.             band->plane    = p;

  206.             band->band_num = b;

  207.             band->width    = b_width;

  208.             band->height   = b_height;

  209.             band->pitch    = width_aligned;

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

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

  212.             band->bufsize  = buf_size/2;

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

  214.                 return AVERROR(ENOMEM);

  215. 

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

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

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

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

  220.                     return AVERROR(ENOMEM);

  221.             }

  222. 

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

  224.         }

  225.     }

  226. 

  227.     return 0;

  228. }

  229. 

  230. av_cold void ff_ivi_free_buffers(IVIPlaneDesc *planes)

  231. {

  232.     int p, b, t;

  233. 

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

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

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

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

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

  239. 

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

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

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

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

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

  245.         }

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

  247.     }

  248. }

  249. 

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

  251. {

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

  253.     IVIBandDesc *band;

  254.     IVITile     *tile, *ref_tile;

  255. 

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

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

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

  259. 

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

  261.             t_width  >>= 1;

  262.             t_height >>= 1;

  263.         }

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

  265.             return AVERROR(EINVAL);

  266. 

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

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

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

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

  271.             band->num_tiles = x_tiles * y_tiles;

  272. 

  273.             av_freep(&band->tiles);

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

  275.             if (!band->tiles)

  276.                 return AVERROR(ENOMEM);

  277. 

  278.             tile = band->tiles;

  279. 

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

  281.              * and quant */

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

  283. 

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

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

  286.                     tile->xpos     = x;

  287.                     tile->ypos     = y;

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

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

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

  291.                     /* calculate number of macroblocks */

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

  293.                                                       band->mb_size);

  294. 

  295.                     av_freep(&tile->mbs);

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

  297.                     if (!tile->mbs)

  298.                         return AVERROR(ENOMEM);

  299. 

  300.                     tile->ref_mbs = 0;

  301.                     if (p || b) {

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

  303.                         ref_tile++;

  304.                     }

  305. 

  306.                     tile++;

  307.                 }

  308.             }

  309. 

  310.         }// for b

  311.     }// for p

  312. 

  313.     return 0;

  314. }

  315. 

  316. int ff_ivi_dec_tile_data_size(GetBitContext *gb)

  317. {

  318.     int    len;

  319. 

  320.     len = 0;

  321.     if (get_bits1(gb)) {

  322.         len = get_bits(gb, 8);

  323.         if (len == 255)

  324.             len = get_bits_long(gb, 24);

  325.     }

  326. 

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

  328.     align_get_bits(gb);

  329. 

  330.     return len;

  331. }

  332. 

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

  334. {

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

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

  337.     uint8_t     col_flags[8];

  338.     int32_t     prev_dc, trvec[64];

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

  340.     IVIMbInfo   *mb;

  341.     RVMapDesc   *rvmap = band->rv_map;

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

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

  344.     const uint16_t  *base_tab;

  345.     const uint8_t   *scale_tab;

  346. 

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

  348. 

  349.     blk_size   = band->blk_size;

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

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

  352.     num_coeffs = blk_size * blk_size;

  353.     if (blk_size == 8) {

  354.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  355.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  356.     } else {

  357.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  358.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  359.     }

  360. 

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

  362.         is_intra = !mb->type;

  363.         cbp      = mb->cbp;

  364.         buf_offs = mb->buf_offs;

  365. 

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

  367. 

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

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

  370.         if (scale_tab)

  371.             quant = scale_tab[quant];

  372. 

  373.         if (!is_intra) {

  374.             mv_x = mb->mv_x;

  375.             mv_y = mb->mv_y;

  376.             if (band->is_halfpel) {

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

  378.                 mv_x >>= 1;

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

  380.             }

  381.         }

  382. 

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

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

  385.             if (blk & 1) {

  386.                 buf_offs += blk_size;

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

  388.                 buf_offs -= blk_size;

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

  390.             }

  391. 

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

  393.                 scan_pos = -1;

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

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

  396. 

  397.                 while (scan_pos <= num_coeffs) {

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

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

  400.                         break; /* End of block */

  401. 

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

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

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

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

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

  407.                     } else {

  408.                         if (sym >= 256U) {

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

  410.                             return -1;

  411.                         }

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

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

  414.                     }

  415. 

  416.                     /* de-zigzag and dequantize */

  417.                     scan_pos += run;

  418.                     if (scan_pos >= (unsigned)num_coeffs)

  419.                         break;

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

  421. 

  422.                     if (!val)

  423.                         av_dlog(NULL, "Val = 0 encountered!\n");

  424. 

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

  426.                     if (q > 1)

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

  428.                     trvec[pos] = val;

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

  430.                 }// while

  431. 

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

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

  434. 

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

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

  437.                     prev_dc      += trvec[0];

  438.                     trvec[0]      = prev_dc;

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

  440.                 }

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

  442.                     av_log(0, AV_LOG_ERROR, "Too large transform\n");

  443.                     return AVERROR_INVALIDDATA;

  444.                 }

  445.                 /* apply inverse transform */

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

  447.                                     band->pitch, col_flags);

  448. 

  449.                 /* apply motion compensation */

  450.                 if (!is_intra)

  451.                     mc_with_delta_func(band->buf + buf_offs,

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

  453.                                        band->pitch, mc_type);

  454.             } else {

  455.                 /* block not coded */

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

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

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

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

  460.                                        band->pitch, blk_size);

  461.                 } else

  462.                     mc_no_delta_func(band->buf + buf_offs,

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

  464.                                      band->pitch, mc_type);

  465.             }

  466. 

  467.             cbp >>= 1;

  468.         }// for blk

  469.     }// for mbn

  470. 

  471.     align_get_bits(gb);

  472. 

  473.     return 0;

  474. }

  475. 

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

  477.                                IVITile *tile, int32_t mv_scale)

  478. {

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

  480.     int             offs, mb_offset, row_offset;

  481.     IVIMbInfo       *mb, *ref_mb;

  482.     const int16_t   *src;

  483.     int16_t         *dst;

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

  485.                              int mc_type);

  486. 

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

  488.         av_log(avctx, AV_LOG_ERROR, "allocated tile size %d mismatches parameters %d in ff_ivi_process_empty_tile()\n",

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

  490.         return;

  491.     }

  492. 

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

  494.     mb         = tile->mbs;

  495.     ref_mb     = tile->ref_mbs;

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

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

  498. 

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

  500.         mb_offset = offs;

  501. 

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

  503.             mb->xpos     = x;

  504.             mb->ypos     = y;

  505.             mb->buf_offs = mb_offset;

  506. 

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

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

  509. 

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

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

  512.                 mb->mv_x    = 0;

  513.                 mb->mv_y    = 0;

  514.             }

  515. 

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

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

  518. 

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

  520.                 /* motion vector inheritance */

  521.                 if (mv_scale) {

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

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

  524.                 } else {

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

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

  527.                 }

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

  529.             }

  530. 

  531.             mb++;

  532.             if (ref_mb)

  533.                 ref_mb++;

  534.             mb_offset += band->mb_size;

  535.         } // for x

  536.         offs += row_offset;

  537.     } // for y

  538. 

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

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

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

  542.                                                  : ff_ivi_mc_4x4_no_delta;

  543. 

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

  545.             mv_x = mb->mv_x;

  546.             mv_y = mb->mv_y;

  547.             if (!band->is_halfpel) {

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

  549.             } else {

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

  551.                 mv_x >>= 1;

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

  553.             }

  554. 

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

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

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

  558.                 mc_no_delta_func(band->buf + offs,

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

  560.                                  band->pitch, mc_type);

  561.             }

  562.         }

  563.     } else {

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

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

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

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

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

  569.             src += band->pitch;

  570.             dst += band->pitch;

  571.         }

  572.     }

  573. }

  574. 

  575. 

  576. #ifdef DEBUG

  577. uint16_t ivi_calc_band_checksum (IVIBandDesc *band)

  578. {

  579.     int         x, y;

  580.     int16_t     *src, checksum;

  581. 

  582.     src = band->buf;

  583.     checksum = 0;

  584. 

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

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

  587.             checksum += src[x];

  588. 

  589.     return checksum;

  590. }

  591. 

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

  593. {

  594.     int         x, y, result;

  595.     uint8_t     t1, t2;

  596.     int16_t    *src;

  597. 

  598.     src = band->buf;

  599.     result = 0;

  600. 

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

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

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

  604.             t2 = ref[x];

  605.             if (t1 != t2) {

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

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

  608.                 result = -1;

  609.             }

  610.         }

  611.         ref += pitch;

  612.     }

  613. 

  614.     return result;

  615. }

  616. #endif

  617. 

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

  619. {

  620.     int             x, y;

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

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

  623. 

  624.     if (!src)

  625.         return;

  626. 

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

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

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

  630.         src += pitch;

  631.         dst += dst_pitch;

  632.     }

  633. }

  634. 

  635. 

  636. /**

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

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

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

  640.  * startup from these descriptors.

  641.  */

  642. const IVIHuffDesc ff_ivi_mb_huff_desc[8] = {

  643.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  644.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  645.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  646.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  647.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  648.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  649.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  650.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  651. };

  652. 

  653. const IVIHuffDesc ff_ivi_blk_huff_desc[8] = {

  654.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  655.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  656.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  657.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  658.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  659.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  660.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  661.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  662. };

  663. 

  664. 

  665. /**

  666.  *  Scan patterns shared between indeo4 and indeo5

  667.  */

  668. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  669.     0,  8, 16, 24, 32, 40, 48, 56,

  670.     1,  9, 17, 25, 33, 41, 49, 57,

  671.     2, 10, 18, 26, 34, 42, 50, 58,

  672.     3, 11, 19, 27, 35, 43, 51, 59,

  673.     4, 12, 20, 28, 36, 44, 52, 60,

  674.     5, 13, 21, 29, 37, 45, 53, 61,

  675.     6, 14, 22, 30, 38, 46, 54, 62,

  676.     7, 15, 23, 31, 39, 47, 55, 63

  677. };

  678. 

  679. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  680.      0,  1,  2,  3,  4,  5,  6,  7,

  681.      8,  9, 10, 11, 12, 13, 14, 15,

  682.     16, 17, 18, 19, 20, 21, 22, 23,

  683.     24, 25, 26, 27, 28, 29, 30, 31,

  684.     32, 33, 34, 35, 36, 37, 38, 39,

  685.     40, 41, 42, 43, 44, 45, 46, 47,

  686.     48, 49, 50, 51, 52, 53, 54, 55,

  687.     56, 57, 58, 59, 60, 61, 62, 63

  688. };

  689. 

  690. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  691.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  692. };

  693. 

  694. 

  695. /**

  696.  *  Run-value (RLE) tables.

  697.  */

  698. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  699. {   /* MapTab0 */

  700.     5, /* eob_sym */

  701.     2, /* esc_sym */

  702.     /* run table */

  703.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  704.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  705.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  706.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  707.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  708.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  709.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  710.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  711.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  712.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  713.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  714.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  715.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  716.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  717.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  718.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  719. 

  720.     /* value table */

  721.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  722.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  723.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  724.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  725.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  726.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  727.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  728.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  729.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  730.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  731.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  732.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  733.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  734.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  735.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  736.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  737. },{

  738.     /* MapTab1 */

  739.     0,  /* eob_sym */

  740.     38, /* esc_sym */

  741.     /* run table */

  742.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  743.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  744.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  745.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  746.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  747.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  748.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  749.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  750.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  751.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  752.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  753.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  754.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  755.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  756.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  757.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  758. 

  759.     /* value table */

  760.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

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

  762.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  763.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  764.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  765.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  766.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  767.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  768.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  769.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  770.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  771.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  772.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  773.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  774.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  775.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  776. },{

  777.     /* MapTab2 */

  778.     2,  /* eob_sym */

  779.     11, /* esc_sym */

  780.     /* run table */

  781.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  782.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  783.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  784.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  785.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  786.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  787.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  788.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  789.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  790.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  791.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  792.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  793.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  794.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  795.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  796.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  797. 

  798.     /* value table */

  799.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  800.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  801.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  802.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  803.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  804.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  805.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  806.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  807.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  808.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  809.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  810.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  811.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  812.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  813.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  814.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  815. },{

  816.     /* MapTab3 */

  817.     0,  /* eob_sym */

  818.     35, /* esc_sym */

  819.     /* run table */

  820.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  821.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  822.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  823.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  824.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  825.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  826.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  827.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  828.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  829.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  830.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  831.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  832.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  833.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  834.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  835.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  836. 

  837.     /* value table */

  838.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  839.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  840.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  841.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  842.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  843.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  844.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  845.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  846.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  847.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  848.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  849.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  850.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  851.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  852.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  853.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  854. },{

  855.     /* MapTab4 */

  856.     0,  /* eob_sym */

  857.     34, /* esc_sym */

  858.     /* run table */

  859.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  860.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  861.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  862.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  863.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  864.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  865.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  866.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  867.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  868.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  869.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  870.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  871.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  872.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  873.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  874.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  875. 

  876.     /* value table */

  877.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  878.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  879.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  880.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  881.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  882.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  883.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  884.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  885.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  886.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  887.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  888.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  889.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  890.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  891.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  892.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  893. },{

  894.     /* MapTab5 */

  895.     2,  /* eob_sym */

  896.     33, /* esc_sym */

  897.     /* run table */

  898.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  899.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  900.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  901.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  902.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  903.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  904.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  905.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  906.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  907.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  908.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  909.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  910.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  911.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  912.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  913.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  914. 

  915.     /* value table */

  916.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  917.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  918.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  919.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  920.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  921.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  922.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  923.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  924.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  925.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  926.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  927.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  928.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  929.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  930.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  931.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  932. },{

  933.     /* MapTab6 */

  934.     2,  /* eob_sym */

  935.     13, /* esc_sym */

  936.     /* run table */

  937.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  938.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  939.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  940.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  941.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  942.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  943.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  944.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  945.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  946.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  947.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  948.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  949.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  950.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  951.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  952.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  953. 

  954.     /* value table */

  955.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  956.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  957.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  958.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  959.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  960.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  961.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  962.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  963.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  964.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  965.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  966.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  967.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  968.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  969.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  970.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  971. },{

  972.     /* MapTab7 */

  973.     2,  /* eob_sym */

  974.     38, /* esc_sym */

  975.     /* run table */

  976.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  977.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  978.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  979.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  980.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  981.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  982.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  983.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  984.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  985.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  986.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  987.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  988.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  989.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  990.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  991.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  992. 

  993.     /* value table */

  994.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  995.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  996.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  997.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  998.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  999.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1000.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1001.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1002.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1003.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1004.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1005.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1006.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1007.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1008.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1009.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1010. },{

  1011.     /* MapTab8 */

  1012.     4,  /* eob_sym */

  1013.     11, /* esc_sym */

  1014.     /* run table */

  1015.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1016.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1017.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1018.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1019.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1020.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1021.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1022.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1023.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1024.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1025.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1026.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1027.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1028.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1029.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1030.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1031. 

  1032.     /* value table */

  1033.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1034.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1035.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1036.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1037.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1038.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1039.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1040.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1041.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1042.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1043.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1044.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1045.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1046.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1047.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1048.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1049. }

  1050. };