falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37692 Commits
32 Branches
580MB
Tree: 21732063a3
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '21732063a3'
${ noResults }
FFmpeg/libavcodec/ivi_common.c

1413 lines
58KB
Raw Blame History 

  1. /*

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

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of Libav.

  7.  *

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

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

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

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

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

  21.  */

  22. 

  23. /**

  24.  * @file

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

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #define BITSTREAM_READER_LE

  30. #include "libavutil/attributes.h"

  31. #include "avcodec.h"

  32. #include "get_bits.h"

  33. #include "internal.h"

  34. #include "mathops.h"

  35. #include "ivi_common.h"

  36. #include "ivi_dsp.h"

  37. 

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

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

  40. 

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

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

  43. 

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

  45.                              uint32_t pitch, int mc_type);

  46. 

  47. static int ivi_mc(ivi_mc_func mc, int16_t *buf, const int16_t *ref_buf,

  48.                   int offs, int mv_x, int mv_y, uint32_t pitch,

  49.                   int mc_type)

  50. {

  51.     int ref_offs = offs + mv_y * pitch + mv_x;

  52. 

  53.     if (offs < 0 || ref_offs < 0 || !ref_buf)

  54.         return AVERROR_INVALIDDATA;

  55. 

  56.     mc(buf + offs, ref_buf + ref_offs, pitch, mc_type);

  57. 

  58.     return 0;

  59. }

  60. 

  61. /**

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

  63.  *  in the least significant bits.

  64.  */

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

  66. {

  67.     uint16_t res;

  68. 

  69.     if (nbits <= 8) {

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

  71.     } else

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

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

  74. 

  75.     return res;

  76. }

  77. 

  78. /*

  79.  *  Generate a huffman codebook from the given descriptor

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

  81.  *

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

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

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

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

  86.  */

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

  88. {

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

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

  91.     uint8_t     bits[256];

  92. 

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

  94. 

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

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

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

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

  99. 

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

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

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

  103. 

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

  105.             if (bits[pos] > IVI_VLC_BITS)

  106.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  107. 

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

  109.             if (!bits[pos])

  110.                 bits[pos] = 1;

  111. 

  112.             pos++;

  113.         }//for j

  114.     }//for i

  115. 

  116.     /* number of codewords = pos */

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

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

  119. }

  120. 

  121. av_cold void ff_ivi_init_static_vlc(void)

  122. {

  123.     int i;

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

  125.     static int initialized_vlcs = 0;

  126. 

  127.     if (initialized_vlcs)

  128.         return;

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

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

  131.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  132.         ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],

  133.                                   &ivi_mb_vlc_tabs[i], 1);

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

  135.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  136.         ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i],

  137.                                   &ivi_blk_vlc_tabs[i], 1);

  138.     }

  139.     initialized_vlcs = 1;

  140. }

  141. 

  142. /*

  143.  *  Copy huffman codebook descriptors.

  144.  *

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

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

  147.  */

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

  149. {

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

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

  152. }

  153. 

  154. /*

  155.  *  Compare two huffman codebook descriptors.

  156.  *

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

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

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

  160.  */

  161. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  162.                              const IVIHuffDesc *desc2)

  163. {

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

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

  166. }

  167. 

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

  169.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  170. {

  171.     int i, result;

  172.     IVIHuffDesc new_huff;

  173. 

  174.     if (!desc_coded) {

  175.         /* select default table */

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

  177.                                     : &ivi_mb_vlc_tabs [7];

  178.         return 0;

  179.     }

  180. 

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

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

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

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

  185.         if (!new_huff.num_rows) {

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

  187.             return AVERROR_INVALIDDATA;

  188.         }

  189. 

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

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

  192. 

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

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

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

  196. 

  197.             if (huff_tab->cust_tab.table)

  198.                 ff_free_vlc(&huff_tab->cust_tab);

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

  200.                     &huff_tab->cust_tab, 0);

  201.             if (result) {

  202.                 // reset faulty description

  203.                 huff_tab->cust_desc.num_rows = 0;

  204.                 av_log(avctx, AV_LOG_ERROR,

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

  206.                 return result;

  207.             }

  208.         }

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

  210.     } else {

  211.         /* select one of predefined tables */

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

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

  214.     }

  215. 

  216.     return 0;

  217. }

  218. 

  219. /*

  220.  *  Free planes, bands and macroblocks buffers.

  221.  *

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

  223.  */

  224. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  225. {

  226.     int p, b, t;

  227. 

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

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

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

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

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

  233. 

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

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

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

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

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

  239.         }

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

  241.     }

  242. }

  243. 

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

  245. {

  246.     int p, b;

  247.     uint32_t b_width, b_height, align_fac, width_aligned,

  248.              height_aligned, buf_size;

  249.     IVIBandDesc *band;

  250. 

  251.     ivi_free_buffers(planes);

  252. 

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

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

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

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

  257. 

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

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

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

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

  262. 

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

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

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

  266.             return AVERROR(ENOMEM);

  267. 

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

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

  270.          *  has only half size */

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

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

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

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

  275. 

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

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

  278.         align_fac       = p ? 8 : 16;

  279.         width_aligned   = FFALIGN(b_width , align_fac);

  280.         height_aligned  = FFALIGN(b_height, align_fac);

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

  282. 

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

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

  285.             band->plane    = p;

  286.             band->band_num = b;

  287.             band->width    = b_width;

  288.             band->height   = b_height;

  289.             band->pitch    = width_aligned;

  290.             band->aheight  = height_aligned;

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

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

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

  294.                 return AVERROR(ENOMEM);

  295. 

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

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

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

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

  300.                     return AVERROR(ENOMEM);

  301.             }

  302.             /* reset custom vlc */

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

  304.         }

  305.     }

  306. 

  307.     return 0;

  308. }

  309. 

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

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

  312. {

  313.     int x, y;

  314.     IVITile *tile = band->tiles;

  315. 

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

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

  318.             tile->xpos     = x;

  319.             tile->ypos     = y;

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

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

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

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

  324.             /* calculate number of macroblocks */

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

  326.                                               band->mb_size);

  327. 

  328.             av_freep(&tile->mbs);

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

  330.             if (!tile->mbs)

  331.                 return AVERROR(ENOMEM);

  332. 

  333.             tile->ref_mbs = 0;

  334.             if (p || b) {

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

  336.                 ref_tile++;

  337.             }

  338.             tile++;

  339.         }

  340.     }

  341. 

  342.     return 0;

  343. }

  344. 

  345. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  346.                               int tile_width, int tile_height)

  347. {

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

  349.     IVIBandDesc *band;

  350. 

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

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

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

  354. 

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

  356.             t_width  >>= 1;

  357.             t_height >>= 1;

  358.         }

  359. 

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

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

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

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

  364.             band->num_tiles = x_tiles * y_tiles;

  365. 

  366.             av_freep(&band->tiles);

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

  368.             if (!band->tiles)

  369.                 return AVERROR(ENOMEM);

  370. 

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

  372.              * and quant */

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

  374.                                  p, b, t_height, t_width);

  375.             if (ret < 0)

  376.                 return ret;

  377.         }

  378.     }

  379. 

  380.     return 0;

  381. }

  382. 

  383. /*

  384.  *  Decode size of the tile data.

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

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

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

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

  389.  *

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

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

  392.  */

  393. static int ivi_dec_tile_data_size(GetBitContext *gb)

  394. {

  395.     int    len;

  396. 

  397.     len = 0;

  398.     if (get_bits1(gb)) {

  399.         len = get_bits(gb, 8);

  400.         if (len == 255)

  401.             len = get_bits_long(gb, 24);

  402.     }

  403. 

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

  405.     align_get_bits(gb);

  406. 

  407.     return len;

  408. }

  409. 

  410. 

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

  412.                                    ivi_mc_func mc, int mv_x, int mv_y,

  413.                                    int *prev_dc, int is_intra, int mc_type,

  414.                                    uint32_t quant, int offs,

  415.                                    AVCodecContext *avctx)

  416. {

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

  418.     RVMapDesc *rvmap = band->rv_map;

  419.     uint8_t col_flags[8];

  420.     int32_t trvec[64];

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

  422.     int pos, run, val;

  423.     int blk_size   = band->blk_size;

  424.     int num_coeffs = blk_size * blk_size;

  425.     int col_mask   = blk_size - 1;

  426.     int scan_pos   = -1;

  427. 

  428.     if (!band->scan) {

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

  430.         return AVERROR_INVALIDDATA;

  431.     }

  432. 

  433.     /* zero transform vector */

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

  435.     /* zero column flags */

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

  437.     while (scan_pos <= num_coeffs) {

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

  439.                        IVI_VLC_BITS, 1);

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

  441.             break; /* End of block */

  442. 

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

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

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

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

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

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

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

  450.         } else {

  451.             if (sym >= 256U) {

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

  453.                 return AVERROR_INVALIDDATA;

  454.             }

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

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

  457.         }

  458. 

  459.         /* de-zigzag and dequantize */

  460.         scan_pos += run;

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

  462.             break;

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

  464. 

  465.         if (!val)

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

  467. 

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

  469.         if (q > 1)

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

  471.         trvec[pos] = val;

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

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

  474.     }

  475. 

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

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

  478. 

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

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

  481.         *prev_dc     += trvec[0];

  482.         trvec[0]      = *prev_dc;

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

  484.     }

  485. 

  486.     /* apply inverse transform */

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

  488.                         band->pitch, col_flags);

  489. 

  490.     /* apply motion compensation */

  491.     if (!is_intra)

  492.         return ivi_mc(mc, band->buf, band->ref_buf, offs, mv_x, mv_y,

  493.                       band->pitch, mc_type);

  494. 

  495.     return 0;

  496. }

  497. /*

  498.  *  Decode block data:

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

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

  501.  *  in order to reconstruct the picture.

  502.  *

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

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

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

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

  507.  */

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

  509.                              IVITile *tile, AVCodecContext *avctx)

  510. {

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

  512.     int mv_x = 0, mv_y = 0;

  513.     int32_t prev_dc;

  514.     uint32_t cbp, quant, buf_offs;

  515.     IVIMbInfo *mb;

  516.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  517.     const uint8_t *scale_tab;

  518. 

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

  520.     prev_dc    = 0;

  521.     blk_size   = band->blk_size;

  522.     /* number of blocks per mb */

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

  524.     if (blk_size == 8) {

  525.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  526.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  527.     } else {

  528.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  529.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  530.     }

  531. 

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

  533.         is_intra = !mb->type;

  534.         cbp      = mb->cbp;

  535.         buf_offs = mb->buf_offs;

  536. 

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

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

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

  540.         else

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

  542. 

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

  544.         if (scale_tab)

  545.             quant = scale_tab[quant];

  546. 

  547.         if (!is_intra) {

  548.             mv_x = mb->mv_x;

  549.             mv_y = mb->mv_y;

  550.             if (band->is_halfpel) {

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

  552.                 mv_x >>= 1;

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

  554.             }

  555.             if (mb->type) {

  556.                 int dmv_x, dmv_y, cx, cy;

  557. 

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

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

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

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

  562. 

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

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

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

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

  567.                     return AVERROR_INVALIDDATA;

  568.                 }

  569.             }

  570.         }

  571. 

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

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

  574.             if (blk & 1) {

  575.                 buf_offs += blk_size;

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

  577.                 buf_offs -= blk_size;

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

  579.             }

  580. 

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

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

  583.                                               mv_x, mv_y, &prev_dc, is_intra,

  584.                                               mc_type, quant, buf_offs, avctx);

  585.                 if (ret < 0)

  586.                     return ret;

  587.             } else {

  588.                 /* block not coded */

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

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

  591.                 if (is_intra) {

  592.                     if (band->dc_transform)

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

  594.                                            band->pitch, blk_size);

  595.                 } else {

  596.                     ret = ivi_mc(mc_no_delta_func, band->buf, band->ref_buf,

  597.                                  buf_offs, mv_x, mv_y, band->pitch, mc_type);

  598.                     if (ret < 0)

  599.                         return ret;

  600.                 }

  601.             }

  602. 

  603.             cbp >>= 1;

  604.         }// for blk

  605.     }// for mbn

  606. 

  607.     align_get_bits(gb);

  608. 

  609.     return 0;

  610. }

  611. 

  612. /**

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

  614.  *  compensation respectively.

  615.  *

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

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

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

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

  620.  */

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

  622.                                   IVITile *tile, int32_t mv_scale)

  623. {

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

  625.     int             offs, mb_offset, row_offset, ret;

  626.     IVIMbInfo       *mb, *ref_mb;

  627.     const int16_t   *src;

  628.     int16_t         *dst;

  629.     ivi_mc_func     mc_no_delta_func;

  630. 

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

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

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

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

  635.         return AVERROR_INVALIDDATA;

  636.     }

  637. 

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

  639.     mb         = tile->mbs;

  640.     ref_mb     = tile->ref_mbs;

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

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

  643. 

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

  645.         mb_offset = offs;

  646. 

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

  648.             mb->xpos     = x;

  649.             mb->ypos     = y;

  650.             mb->buf_offs = mb_offset;

  651. 

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

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

  654. 

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

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

  657.                 mb->mv_x    = 0;

  658.                 mb->mv_y    = 0;

  659.             }

  660. 

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

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

  663. 

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

  665.                 /* motion vector inheritance */

  666.                 if (mv_scale) {

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

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

  669.                 } else {

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

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

  672.                 }

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

  674.             }

  675. 

  676.             mb++;

  677.             if (ref_mb)

  678.                 ref_mb++;

  679.             mb_offset += band->mb_size;

  680.         } // for x

  681.         offs += row_offset;

  682.     } // for y

  683. 

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

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

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

  687.                                                  : ff_ivi_mc_4x4_no_delta;

  688. 

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

  690.             mv_x = mb->mv_x;

  691.             mv_y = mb->mv_y;

  692.             if (!band->is_halfpel) {

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

  694.             } else {

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

  696.                 mv_x >>= 1;

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

  698.             }

  699. 

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

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

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

  703.                 ret = ivi_mc(mc_no_delta_func, band->buf, band->ref_buf,

  704.                              offs, mv_x, mv_y, band->pitch, mc_type);

  705.                 if (ret < 0)

  706.                     return ret;

  707.             }

  708.         }

  709.     } else {

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

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

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

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

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

  715.             src += band->pitch;

  716.             dst += band->pitch;

  717.         }

  718.     }

  719. 

  720.     return 0;

  721. }

  722. 

  723. 

  724. #ifdef DEBUG

  725. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  726. {

  727.     int         x, y;

  728.     int16_t     *src, checksum;

  729. 

  730.     src = band->buf;

  731.     checksum = 0;

  732. 

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

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

  735.             checksum += src[x];

  736. 

  737.     return checksum;

  738. }

  739. #endif

  740. 

  741. /*

  742.  *  Convert and output the current plane.

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

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

  745.  *

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

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

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

  749.  */

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

  751. {

  752.     int             x, y;

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

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

  755. 

  756.     if (!src)

  757.         return;

  758. 

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

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

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

  762.         src += pitch;

  763.         dst += dst_pitch;

  764.     }

  765. }

  766. 

  767. /**

  768.  *  Decode an Indeo 4 or 5 band.

  769.  *

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

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

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

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

  774.  */

  775. static int decode_band(IVI45DecContext *ctx,

  776.                        IVIBandDesc *band, AVCodecContext *avctx)

  777. {

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

  779.     IVITile     *tile;

  780. 

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

  782.     if (!band->buf) {

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

  784.         return AVERROR_INVALIDDATA;

  785.     }

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

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

  788. 

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

  790.     if (result) {

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

  792.                result);

  793.         return result;

  794.     }

  795. 

  796.     if (band->is_empty) {

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

  798.         return AVERROR_INVALIDDATA;

  799.     }

  800. 

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

  802. 

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

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

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

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

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

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

  809.     }

  810. 

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

  812. 

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

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

  815. 

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

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

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

  819.             return AVERROR_INVALIDDATA;

  820.         }

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

  822.         if (tile->is_empty) {

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

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

  825.             if (result < 0)

  826.                 break;

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

  828.         } else {

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

  830.             if (!tile->data_size) {

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

  832.                 return AVERROR_INVALIDDATA;

  833.             }

  834. 

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

  836.             if (result < 0)

  837.                 break;

  838. 

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

  840.             if (result < 0) {

  841.                 av_log(avctx, AV_LOG_ERROR,

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

  843.                 break;

  844.             }

  845. 

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

  847.                 av_log(avctx, AV_LOG_ERROR,

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

  849.                 result = AVERROR_INVALIDDATA;

  850.                 break;

  851.             }

  852. 

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

  854.         }

  855.     }

  856. 

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

  858.      * reverse order */

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

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

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

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

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

  864.     }

  865. 

  866. #ifdef DEBUG

  867.     if (band->checksum_present) {

  868.         uint16_t chksum = ivi_calc_band_checksum(band);

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

  870.             av_log(avctx, AV_LOG_ERROR,

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

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

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

  874.         }

  875.     }

  876. #endif

  877. 

  878.     align_get_bits(&ctx->gb);

  879. 

  880.     return result;

  881. }

  882. 

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

  884.                         AVPacket *avpkt)

  885. {

  886.     IVI45DecContext *ctx = avctx->priv_data;

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

  888.     AVFrame       *frame = data;

  889.     int             buf_size = avpkt->size;

  890.     int             result, p, b;

  891. 

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

  893.     ctx->frame_data = buf;

  894.     ctx->frame_size = buf_size;

  895. 

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

  897.     if (result) {

  898.         av_log(avctx, AV_LOG_ERROR,

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

  900.         return result;

  901.     }

  902.     if (ctx->gop_invalid)

  903.         return AVERROR_INVALIDDATA;

  904. 

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

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

  907.         return AVERROR_PATCHWELCOME;

  908.     }

  909. 

  910.     ctx->switch_buffers(ctx);

  911. 

  912.     //{ START_TIMER;

  913. 

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

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

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

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

  918.                 if (result < 0) {

  919.                     av_log(avctx, AV_LOG_ERROR,

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

  921.                     return result;

  922.                 }

  923.             }

  924.         }

  925.     }

  926. 

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

  928. 

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

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

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

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

  933.      */

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

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

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

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

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

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

  940.     }

  941. 

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

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

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

  945.         return result;

  946.     }

  947. 

  948.     if (ctx->is_scalable) {

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

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

  951.         else

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

  953.     } else {

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

  955.     }

  956. 

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

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

  959. 

  960.     *got_frame = 1;

  961. 

  962.     return buf_size;

  963. }

  964. 

  965. /**

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

  967.  */

  968. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  969. {

  970.     IVI45DecContext *ctx = avctx->priv_data;

  971. 

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

  973. 

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

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

  976. 

  977. #if IVI4_STREAM_ANALYSER

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

  979.     if (ctx->is_scalable)

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

  981.     if (ctx->uses_tiling)

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

  983.     if (ctx->has_b_frames)

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

  985.     if (ctx->has_transp)

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

  987.     if (ctx->uses_haar)

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

  989.     if (ctx->uses_fullpel)

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

  991.     }

  992. #endif

  993. 

  994.     return 0;

  995. }

  996. 

  997. 

  998. /**

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

  1000.  * signals. They are specified using "huffman descriptors" in order to

  1001.  * avoid huge static tables. The decoding tables will be generated at

  1002.  * startup from these descriptors.

  1003.  */

  1004. const IVIHuffDesc ff_ivi_mb_huff_desc[8] = {

  1005.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  1006.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  1007.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  1008.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  1009.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  1010.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  1011.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  1012.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  1013. };

  1014. 

  1015. const IVIHuffDesc ff_ivi_blk_huff_desc[8] = {

  1016.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  1017.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  1018.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  1019.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  1020.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  1021.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  1022.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  1023.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  1024. };

  1025. 

  1026. 

  1027. /**

  1028.  *  Scan patterns shared between indeo4 and indeo5

  1029.  */

  1030. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1031.     0,  8, 16, 24, 32, 40, 48, 56,

  1032.     1,  9, 17, 25, 33, 41, 49, 57,

  1033.     2, 10, 18, 26, 34, 42, 50, 58,

  1034.     3, 11, 19, 27, 35, 43, 51, 59,

  1035.     4, 12, 20, 28, 36, 44, 52, 60,

  1036.     5, 13, 21, 29, 37, 45, 53, 61,

  1037.     6, 14, 22, 30, 38, 46, 54, 62,

  1038.     7, 15, 23, 31, 39, 47, 55, 63

  1039. };

  1040. 

  1041. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1042.      0,  1,  2,  3,  4,  5,  6,  7,

  1043.      8,  9, 10, 11, 12, 13, 14, 15,

  1044.     16, 17, 18, 19, 20, 21, 22, 23,

  1045.     24, 25, 26, 27, 28, 29, 30, 31,

  1046.     32, 33, 34, 35, 36, 37, 38, 39,

  1047.     40, 41, 42, 43, 44, 45, 46, 47,

  1048.     48, 49, 50, 51, 52, 53, 54, 55,

  1049.     56, 57, 58, 59, 60, 61, 62, 63

  1050. };

  1051. 

  1052. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1053.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1054. };

  1055. 

  1056. 

  1057. /**

  1058.  *  Run-value (RLE) tables.

  1059.  */

  1060. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1061. {   /* MapTab0 */

  1062.     5, /* eob_sym */

  1063.     2, /* esc_sym */

  1064.     /* run table */

  1065.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1066.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1067.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1068.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  1069.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1070.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1071.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1072.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1073.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1074.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1075.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1076.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1077.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1078.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1079.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1080.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1081. 

  1082.     /* value table */

  1083.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1084.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1085.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1086.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1087.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1088.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1089.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1090.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1091.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1092.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1093.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1094.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1095.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1096.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1097.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1098.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1099. },{

  1100.     /* MapTab1 */

  1101.     0,  /* eob_sym */

  1102.     38, /* esc_sym */

  1103.     /* run table */

  1104.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1105.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1106.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1107.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1108.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1109.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1110.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1111.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1112.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1113.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1114.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1115.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1116.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1117.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1118.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1119.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1120. 

  1121.     /* value table */

  1122.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1123.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1124.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  1125.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  1126.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1127.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1128.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1129.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1130.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1131.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1132.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1133.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1134.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1135.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1136.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1137.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1138. },{

  1139.     /* MapTab2 */

  1140.     2,  /* eob_sym */

  1141.     11, /* esc_sym */

  1142.     /* run table */

  1143.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1144.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1145.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1146.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1147.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1148.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1149.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1150.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1151.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1152.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1153.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1154.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1155.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1156.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1157.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1158.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1159. 

  1160.     /* value table */

  1161.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1162.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1163.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1164.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1165.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1166.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1167.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1168.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1169.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1170.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1171.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1172.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1173.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1174.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1175.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1176.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1177. },{

  1178.     /* MapTab3 */

  1179.     0,  /* eob_sym */

  1180.     35, /* esc_sym */

  1181.     /* run table */

  1182.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1183.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1184.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1185.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1186.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1187.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1188.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1189.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1190.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1191.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1192.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1193.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1194.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1195.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1196.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1197.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1198. 

  1199.     /* value table */

  1200.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1201.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1202.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1203.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1204.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1205.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1206.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1207.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1208.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1209.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1210.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1211.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1212.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1213.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1214.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1215.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1216. },{

  1217.     /* MapTab4 */

  1218.     0,  /* eob_sym */

  1219.     34, /* esc_sym */

  1220.     /* run table */

  1221.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1222.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1223.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1224.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1225.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1226.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1227.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1228.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1229.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1230.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1231.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1232.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1233.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1234.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1235.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1236.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1237. 

  1238.     /* value table */

  1239.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1240.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1241.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1242.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1243.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1244.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1245.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1246.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1247.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1248.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1249.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1250.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1251.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1252.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1253.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1254.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1255. },{

  1256.     /* MapTab5 */

  1257.     2,  /* eob_sym */

  1258.     33, /* esc_sym */

  1259.     /* run table */

  1260.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1261.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1262.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1263.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1264.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1265.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1266.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1267.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1268.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1269.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1270.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1271.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1272.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1273.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1274.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1275.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1276. 

  1277.     /* value table */

  1278.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1279.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1280.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1281.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1282.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1283.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1284.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1285.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1286.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1287.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1288.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1289.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1290.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1291.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1292.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1293.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1294. },{

  1295.     /* MapTab6 */

  1296.     2,  /* eob_sym */

  1297.     13, /* esc_sym */

  1298.     /* run table */

  1299.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1300.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1301.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1302.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1303.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1304.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1305.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1306.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1307.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1308.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1309.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1310.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1311.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1312.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1313.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1314.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1315. 

  1316.     /* value table */

  1317.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1318.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1319.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1320.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1321.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1322.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1323.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1324.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1325.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1326.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1327.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1328.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1329.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1330.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1331.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1332.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1333. },{

  1334.     /* MapTab7 */

  1335.     2,  /* eob_sym */

  1336.     38, /* esc_sym */

  1337.     /* run table */

  1338.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1339.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1340.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1341.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1342.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1343.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1344.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1345.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1346.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1347.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1348.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1349.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1350.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1351.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1352.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1353.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1354. 

  1355.     /* value table */

  1356.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1357.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1358.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1359.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1360.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1361.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1362.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1363.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1364.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1365.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1366.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1367.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1368.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1369.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1370.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1371.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1372. },{

  1373.     /* MapTab8 */

  1374.     4,  /* eob_sym */

  1375.     11, /* esc_sym */

  1376.     /* run table */

  1377.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1378.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1379.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1380.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1381.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1382.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1383.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1384.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1385.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1386.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1387.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1388.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1389.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1390.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1391.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1392.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1393. 

  1394.     /* value table */

  1395.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1396.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1397.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1398.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1399.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1400.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1401.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1402.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1403.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1404.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1405.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1406.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1407.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1408.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1409.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1410.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1411. }

  1412. };