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FFmpeg/libavcodec/ivi_common.c

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  1. /*

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

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of Libav.

  7.  *

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

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

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

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

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

  21.  */

  22. 

  23. /**

  24.  * @file

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

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #define BITSTREAM_READER_LE

  30. #include "libavutil/attributes.h"

  31. #include "libavutil/timer.h"

  32. #include "avcodec.h"

  33. #include "get_bits.h"

  34. #include "internal.h"

  35. #include "mathops.h"

  36. #include "ivi_common.h"

  37. #include "ivi_dsp.h"

  38. 

  39. /**

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

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

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

  43.  * startup from these descriptors.

  44.  */

  45. /** static macroblock huffman tables */

  46. static const IVIHuffDesc ivi_mb_huff_desc[8] = {

  47.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  48.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  49.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  50.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  51.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  52.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  53.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  54.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  55. };

  56. 

  57. /** static block huffman tables */

  58. static const IVIHuffDesc ivi_blk_huff_desc[8] = {

  59.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  60.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  61.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  62.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  63.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

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

  65.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  66.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  67. };

  68. 

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

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

  71. 

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

  73.                              uint32_t pitch, int mc_type);

  74. 

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

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

  77. {

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

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

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

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

  82. 

  83.     if (offs < 0 || ref_offs < 0 || !band->ref_buf)

  84.         return AVERROR_INVALIDDATA;

  85.     if (buf_size - min_size < offs)

  86.         return AVERROR_INVALIDDATA;

  87.     if (buf_size - min_size - ref_size < ref_offs)

  88.         return AVERROR_INVALIDDATA;

  89. 

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

  91. 

  92.     return 0;

  93. }

  94. 

  95. /**

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

  97.  *  in the least significant bits.

  98.  */

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

  100. {

  101.     uint16_t res;

  102. 

  103.     if (nbits <= 8) {

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

  105.     } else

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

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

  108. 

  109.     return res;

  110. }

  111. 

  112. /*

  113.  *  Generate a huffman codebook from the given descriptor

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

  115.  *

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

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

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

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

  120.  */

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

  122. {

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

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

  125.     uint8_t     bits[256];

  126. 

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

  128. 

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

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

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

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

  133. 

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

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

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

  137. 

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

  139.             if (bits[pos] > IVI_VLC_BITS)

  140.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  141. 

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

  143.             if (!bits[pos])

  144.                 bits[pos] = 1;

  145. 

  146.             pos++;

  147.         }//for j

  148.     }//for i

  149. 

  150.     /* number of codewords = pos */

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

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

  153. }

  154. 

  155. av_cold void ff_ivi_init_static_vlc(void)

  156. {

  157.     int i;

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

  159.     static int initialized_vlcs = 0;

  160. 

  161.     if (initialized_vlcs)

  162.         return;

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

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

  165.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  166.         ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],

  167.                                   &ivi_mb_vlc_tabs[i], 1);

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

  169.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  170.         ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],

  171.                                   &ivi_blk_vlc_tabs[i], 1);

  172.     }

  173.     initialized_vlcs = 1;

  174. }

  175. 

  176. /*

  177.  *  Copy huffman codebook descriptors.

  178.  *

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

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

  181.  */

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

  183. {

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

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

  186. }

  187. 

  188. /*

  189.  *  Compare two huffman codebook descriptors.

  190.  *

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

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

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

  194.  */

  195. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  196.                              const IVIHuffDesc *desc2)

  197. {

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

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

  200. }

  201. 

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

  203.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  204. {

  205.     int i, result;

  206.     IVIHuffDesc new_huff;

  207. 

  208.     if (!desc_coded) {

  209.         /* select default table */

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

  211.                                     : &ivi_mb_vlc_tabs [7];

  212.         return 0;

  213.     }

  214. 

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

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

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

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

  219.         if (!new_huff.num_rows) {

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

  221.             return AVERROR_INVALIDDATA;

  222.         }

  223. 

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

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

  226. 

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

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

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

  230. 

  231.             if (huff_tab->cust_tab.table)

  232.                 ff_free_vlc(&huff_tab->cust_tab);

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

  234.                     &huff_tab->cust_tab, 0);

  235.             if (result) {

  236.                 // reset faulty description

  237.                 huff_tab->cust_desc.num_rows = 0;

  238.                 av_log(avctx, AV_LOG_ERROR,

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

  240.                 return result;

  241.             }

  242.         }

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

  244.     } else {

  245.         /* select one of predefined tables */

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

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

  248.     }

  249. 

  250.     return 0;

  251. }

  252. 

  253. /*

  254.  *  Free planes, bands and macroblocks buffers.

  255.  *

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

  257.  */

  258. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  259. {

  260.     int p, b, t;

  261. 

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

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

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

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

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

  267. 

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

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

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

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

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

  273.         }

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

  275.         planes[p].num_bands = 0;

  276.     }

  277. }

  278. 

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

  280. {

  281.     int p, b;

  282.     uint32_t b_width, b_height, align_fac, width_aligned,

  283.              height_aligned, buf_size;

  284.     IVIBandDesc *band;

  285. 

  286.     ivi_free_buffers(planes);

  287. 

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

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

  290.         return AVERROR_INVALIDDATA;

  291. 

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

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

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

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

  296. 

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

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

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

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

  301. 

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

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

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

  305.             return AVERROR(ENOMEM);

  306. 

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

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

  309.          *  has only half size */

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

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

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

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

  314. 

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

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

  317.         align_fac       = p ? 8 : 16;

  318.         width_aligned   = FFALIGN(b_width , align_fac);

  319.         height_aligned  = FFALIGN(b_height, align_fac);

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

  321. 

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

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

  324.             band->plane    = p;

  325.             band->band_num = b;

  326.             band->width    = b_width;

  327.             band->height   = b_height;

  328.             band->pitch    = width_aligned;

  329.             band->aheight  = height_aligned;

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

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

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

  333.                 return AVERROR(ENOMEM);

  334. 

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

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

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

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

  339.                     return AVERROR(ENOMEM);

  340.             }

  341.             /* reset custom vlc */

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

  343.         }

  344.     }

  345. 

  346.     return 0;

  347. }

  348. 

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

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

  351. {

  352.     int x, y;

  353.     IVITile *tile = band->tiles;

  354. 

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

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

  357.             tile->xpos     = x;

  358.             tile->ypos     = y;

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

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

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

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

  363.             /* calculate number of macroblocks */

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

  365.                                               band->mb_size);

  366. 

  367.             av_freep(&tile->mbs);

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

  369.             if (!tile->mbs)

  370.                 return AVERROR(ENOMEM);

  371. 

  372.             tile->ref_mbs = 0;

  373.             if (p || b) {

  374.                 if (tile->num_MBs != ref_tile->num_MBs)

  375.                     return AVERROR_INVALIDDATA;

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

  377.                 ref_tile++;

  378.             }

  379.             tile++;

  380.         }

  381.     }

  382. 

  383.     return 0;

  384. }

  385. 

  386. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  387.                               int tile_width, int tile_height)

  388. {

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

  390.     IVIBandDesc *band;

  391. 

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

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

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

  395. 

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

  397.             t_width  >>= 1;

  398.             t_height >>= 1;

  399.         }

  400. 

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

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

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

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

  405.             band->num_tiles = x_tiles * y_tiles;

  406. 

  407.             av_freep(&band->tiles);

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

  409.             if (!band->tiles)

  410.                 return AVERROR(ENOMEM);

  411. 

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

  413.              * and quant */

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

  415.                                  p, b, t_height, t_width);

  416.             if (ret < 0)

  417.                 return ret;

  418.         }

  419.     }

  420. 

  421.     return 0;

  422. }

  423. 

  424. /*

  425.  *  Decode size of the tile data.

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

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

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

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

  430.  *

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

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

  433.  */

  434. static int ivi_dec_tile_data_size(GetBitContext *gb)

  435. {

  436.     int    len;

  437. 

  438.     len = 0;

  439.     if (get_bits1(gb)) {

  440.         len = get_bits(gb, 8);

  441.         if (len == 255)

  442.             len = get_bits_long(gb, 24);

  443.     }

  444. 

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

  446.     align_get_bits(gb);

  447. 

  448.     return len;

  449. }

  450. 

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

  452.                             int blk_size)

  453. {

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

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

  456. 

  457.     if (!band->dc_transform)

  458.         return 0;

  459. 

  460. 

  461.     if (min_size > buf_size)

  462.         return AVERROR_INVALIDDATA;

  463. 

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

  465.                        band->pitch, blk_size);

  466. 

  467.     return 0;

  468. }

  469. 

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

  471.                                    ivi_mc_func mc, int mv_x, int mv_y,

  472.                                    int *prev_dc, int is_intra, int mc_type,

  473.                                    uint32_t quant, int offs,

  474.                                    AVCodecContext *avctx)

  475. {

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

  477.     RVMapDesc *rvmap = band->rv_map;

  478.     uint8_t col_flags[8];

  479.     int32_t trvec[64];

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

  481.     int pos, run, val;

  482.     int blk_size   = band->blk_size;

  483.     int num_coeffs = blk_size * blk_size;

  484.     int col_mask   = blk_size - 1;

  485.     int scan_pos   = -1;

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

  487.                      band->transform_size;

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

  489. 

  490.     if (min_size > buf_size)

  491.         return AVERROR_INVALIDDATA;

  492. 

  493.     if (!band->scan) {

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

  495.         return AVERROR_INVALIDDATA;

  496.     }

  497. 

  498.     /* zero transform vector */

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

  500.     /* zero column flags */

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

  502.     while (scan_pos <= num_coeffs) {

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

  504.                        IVI_VLC_BITS, 1);

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

  506.             break; /* End of block */

  507. 

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

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

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

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

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

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

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

  515.         } else {

  516.             if (sym >= 256U) {

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

  518.                 return AVERROR_INVALIDDATA;

  519.             }

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

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

  522.         }

  523. 

  524.         /* de-zigzag and dequantize */

  525.         scan_pos += run;

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

  527.             break;

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

  529. 

  530.         if (!val)

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

  532. 

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

  534.         if (q > 1)

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

  536.         trvec[pos] = val;

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

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

  539.     }

  540. 

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

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

  543. 

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

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

  546.         *prev_dc     += trvec[0];

  547.         trvec[0]      = *prev_dc;

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

  549.     }

  550. 

  551.     /* apply inverse transform */

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

  553.                         band->pitch, col_flags);

  554. 

  555.     /* apply motion compensation */

  556.     if (!is_intra)

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

  558. 

  559.     return 0;

  560. }

  561. /*

  562.  *  Decode block data:

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

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

  565.  *  in order to reconstruct the picture.

  566.  *

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

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

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

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

  571.  */

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

  573.                              IVITile *tile, AVCodecContext *avctx)

  574. {

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

  576.     int mv_x = 0, mv_y = 0;

  577.     int32_t prev_dc;

  578.     uint32_t cbp, quant, buf_offs;

  579.     IVIMbInfo *mb;

  580.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  581.     const uint8_t *scale_tab;

  582. 

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

  584.     prev_dc    = 0;

  585.     blk_size   = band->blk_size;

  586.     /* number of blocks per mb */

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

  588.     if (blk_size == 8) {

  589.         mc_with_delta_func = ff_ivi_mc_8x8_delta;

  590.         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;

  591.     } else {

  592.         mc_with_delta_func = ff_ivi_mc_4x4_delta;

  593.         mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;

  594.     }

  595. 

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

  597.         is_intra = !mb->type;

  598.         cbp      = mb->cbp;

  599.         buf_offs = mb->buf_offs;

  600. 

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

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

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

  604.         else

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

  606. 

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

  608.         if (scale_tab)

  609.             quant = scale_tab[quant];

  610. 

  611.         if (!is_intra) {

  612.             mv_x = mb->mv_x;

  613.             mv_y = mb->mv_y;

  614.             if (band->is_halfpel) {

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

  616.                 mv_x >>= 1;

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

  618.             }

  619.             if (mb->type) {

  620.                 int dmv_x, dmv_y, cx, cy;

  621. 

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

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

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

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

  626. 

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

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

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

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

  631.                     return AVERROR_INVALIDDATA;

  632.                 }

  633.             }

  634.         }

  635. 

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

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

  638.             if (blk & 1) {

  639.                 buf_offs += blk_size;

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

  641.                 buf_offs -= blk_size;

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

  643.             }

  644. 

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

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

  647.                                               mv_x, mv_y, &prev_dc, is_intra,

  648.                                               mc_type, quant, buf_offs, avctx);

  649.                 if (ret < 0)

  650.                     return ret;

  651.             } else {

  652.                 /* block not coded */

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

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

  655.                 if (is_intra) {

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

  657.                     if (ret < 0)

  658.                         return ret;

  659.                 } else {

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

  661.                                  mv_x, mv_y, mc_type);

  662.                     if (ret < 0)

  663.                         return ret;

  664.                 }

  665.             }

  666. 

  667.             cbp >>= 1;

  668.         }// for blk

  669.     }// for mbn

  670. 

  671.     align_get_bits(gb);

  672. 

  673.     return 0;

  674. }

  675. 

  676. /**

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

  678.  *  compensation respectively.

  679.  *

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

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

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

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

  684.  */

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

  686.                                   IVITile *tile, int32_t mv_scale)

  687. {

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

  689.     int             offs, mb_offset, row_offset, ret;

  690.     IVIMbInfo       *mb, *ref_mb;

  691.     const int16_t   *src;

  692.     int16_t         *dst;

  693.     ivi_mc_func     mc_no_delta_func;

  694. 

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

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

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

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

  699.         return AVERROR_INVALIDDATA;

  700.     }

  701. 

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

  703.     mb         = tile->mbs;

  704.     ref_mb     = tile->ref_mbs;

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

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

  707. 

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

  709.         mb_offset = offs;

  710. 

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

  712.             mb->xpos     = x;

  713.             mb->ypos     = y;

  714.             mb->buf_offs = mb_offset;

  715. 

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

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

  718. 

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

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

  721.                 mb->mv_x    = 0;

  722.                 mb->mv_y    = 0;

  723.             }

  724. 

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

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

  727. 

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

  729.                 /* motion vector inheritance */

  730.                 if (mv_scale) {

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

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

  733.                 } else {

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

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

  736.                 }

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

  738.             }

  739. 

  740.             mb++;

  741.             if (ref_mb)

  742.                 ref_mb++;

  743.             mb_offset += band->mb_size;

  744.         } // for x

  745.         offs += row_offset;

  746.     } // for y

  747. 

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

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

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

  751.                                                  : ff_ivi_mc_4x4_no_delta;

  752. 

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

  754.             mv_x = mb->mv_x;

  755.             mv_y = mb->mv_y;

  756.             if (!band->is_halfpel) {

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

  758.             } else {

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

  760.                 mv_x >>= 1;

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

  762.             }

  763. 

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

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

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

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

  768.                              mv_x, mv_y, mc_type);

  769.                 if (ret < 0)

  770.                     return ret;

  771.             }

  772.         }

  773.     } else {

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

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

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

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

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

  779.             src += band->pitch;

  780.             dst += band->pitch;

  781.         }

  782.     }

  783. 

  784.     return 0;

  785. }

  786. 

  787. 

  788. #ifdef DEBUG

  789. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  790. {

  791.     int         x, y;

  792.     int16_t     *src, checksum;

  793. 

  794.     src = band->buf;

  795.     checksum = 0;

  796. 

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

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

  799.             checksum += src[x];

  800. 

  801.     return checksum;

  802. }

  803. #endif

  804. 

  805. /*

  806.  *  Convert and output the current plane.

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

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

  809.  *

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

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

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

  813.  */

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

  815. {

  816.     int             x, y;

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

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

  819. 

  820.     if (!src)

  821.         return;

  822. 

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

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

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

  826.         src += pitch;

  827.         dst += dst_pitch;

  828.     }

  829. }

  830. 

  831. /**

  832.  *  Decode an Indeo 4 or 5 band.

  833.  *

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

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

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

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

  838.  */

  839. static int decode_band(IVI45DecContext *ctx,

  840.                        IVIBandDesc *band, AVCodecContext *avctx)

  841. {

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

  843.     IVITile     *tile;

  844. 

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

  846.     if (!band->buf) {

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

  848.         return AVERROR_INVALIDDATA;

  849.     }

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

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

  852. 

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

  854.     if (result) {

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

  856.                result);

  857.         return result;

  858.     }

  859. 

  860.     if (band->is_empty) {

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

  862.         return AVERROR_INVALIDDATA;

  863.     }

  864. 

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

  866. 

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

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

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

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

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

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

  873.     }

  874. 

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

  876. 

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

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

  879. 

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

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

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

  883.             return AVERROR_INVALIDDATA;

  884.         }

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

  886.         if (tile->is_empty) {

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

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

  889.             if (result < 0)

  890.                 break;

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

  892.         } else {

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

  894.             if (!tile->data_size) {

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

  896.                 return AVERROR_INVALIDDATA;

  897.             }

  898. 

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

  900.             if (result < 0)

  901.                 break;

  902. 

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

  904.             if (result < 0) {

  905.                 av_log(avctx, AV_LOG_ERROR,

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

  907.                 break;

  908.             }

  909. 

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

  911.                 av_log(avctx, AV_LOG_ERROR,

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

  913.                 result = AVERROR_INVALIDDATA;

  914.                 break;

  915.             }

  916. 

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

  918.         }

  919.     }

  920. 

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

  922.      * reverse order */

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

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

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

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

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

  928.     }

  929. 

  930. #ifdef DEBUG

  931.     if (band->checksum_present) {

  932.         uint16_t chksum = ivi_calc_band_checksum(band);

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

  934.             av_log(avctx, AV_LOG_ERROR,

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

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

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

  938.         }

  939.     }

  940. #endif

  941. 

  942.     align_get_bits(&ctx->gb);

  943. 

  944.     return result;

  945. }

  946. 

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

  948.                         AVPacket *avpkt)

  949. {

  950.     IVI45DecContext *ctx = avctx->priv_data;

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

  952.     AVFrame       *frame = data;

  953.     int             buf_size = avpkt->size;

  954.     int             result, p, b;

  955. 

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

  957.     ctx->frame_data = buf;

  958.     ctx->frame_size = buf_size;

  959. 

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

  961.     if (result) {

  962.         av_log(avctx, AV_LOG_ERROR,

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

  964.         return result;

  965.     }

  966.     if (ctx->gop_invalid)

  967.         return AVERROR_INVALIDDATA;

  968. 

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

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

  971.         return AVERROR_PATCHWELCOME;

  972.     }

  973. 

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

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

  976.         return AVERROR_INVALIDDATA;

  977.     }

  978. 

  979.     ctx->switch_buffers(ctx);

  980. 

  981.     //{ START_TIMER;

  982. 

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

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

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

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

  987.                 if (result < 0) {

  988.                     av_log(avctx, AV_LOG_ERROR,

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

  990.                     return result;

  991.                 }

  992.             }

  993.         }

  994.     } else {

  995.         if (ctx->is_scalable)

  996.             return AVERROR_INVALIDDATA;

  997. 

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

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

  1000.                 return AVERROR_INVALIDDATA;

  1001.         }

  1002.     }

  1003. 

  1004.     //STOP_TIMER("decode_planes"); }

  1005. 

  1006.     /* If the bidirectional mode is enabled, next I and the following P

  1007.      * frame will be sent together. Unfortunately the approach below seems

  1008.      * to be the only way to handle the B-frames mode.

  1009.      * That's exactly the same Intel decoders do.

  1010.      */

  1011.     if (avctx->codec_id == AV_CODEC_ID_INDEO4 &&

  1012.         ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {

  1013.         while (get_bits(&ctx->gb, 8)); // skip version string

  1014.         skip_bits_long(&ctx->gb, 64);  // skip padding, TODO: implement correct 8-bytes alignment

  1015.         if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)

  1016.             av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");

  1017.     }

  1018. 

  1019.     result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  1020.     if (result < 0)

  1021.         return result;

  1022. 

  1023.     if ((result = ff_get_buffer(avctx, frame, 0)) < 0) {

  1024.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  1025.         return result;

  1026.     }

  1027. 

  1028.     if (ctx->is_scalable) {

  1029.         if (avctx->codec_id == AV_CODEC_ID_INDEO4)

  1030.             ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1031.         else

  1032.             ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1033.     } else {

  1034.         ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1035.     }

  1036. 

  1037.     ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);

  1038.     ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);

  1039. 

  1040.     *got_frame = 1;

  1041. 

  1042.     return buf_size;

  1043. }

  1044. 

  1045. /**

  1046.  *  Close Indeo5 decoder and clean up its context.

  1047.  */

  1048. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  1049. {

  1050.     IVI45DecContext *ctx = avctx->priv_data;

  1051. 

  1052.     ivi_free_buffers(&ctx->planes[0]);

  1053. 

  1054.     if (ctx->mb_vlc.cust_tab.table)

  1055.         ff_free_vlc(&ctx->mb_vlc.cust_tab);

  1056. 

  1057. #if IVI4_STREAM_ANALYSER

  1058.     if (avctx->codec_id == AV_CODEC_ID_INDEO4) {

  1059.     if (ctx->is_scalable)

  1060.         av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");

  1061.     if (ctx->uses_tiling)

  1062.         av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");

  1063.     if (ctx->has_b_frames)

  1064.         av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");

  1065.     if (ctx->has_transp)

  1066.         av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");

  1067.     if (ctx->uses_haar)

  1068.         av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");

  1069.     if (ctx->uses_fullpel)

  1070.         av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");

  1071.     }

  1072. #endif

  1073. 

  1074.     return 0;

  1075. }

  1076. 

  1077. 

  1078. /**

  1079.  *  Scan patterns shared between indeo4 and indeo5

  1080.  */

  1081. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1082.     0,  8, 16, 24, 32, 40, 48, 56,

  1083.     1,  9, 17, 25, 33, 41, 49, 57,

  1084.     2, 10, 18, 26, 34, 42, 50, 58,

  1085.     3, 11, 19, 27, 35, 43, 51, 59,

  1086.     4, 12, 20, 28, 36, 44, 52, 60,

  1087.     5, 13, 21, 29, 37, 45, 53, 61,

  1088.     6, 14, 22, 30, 38, 46, 54, 62,

  1089.     7, 15, 23, 31, 39, 47, 55, 63

  1090. };

  1091. 

  1092. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1093.      0,  1,  2,  3,  4,  5,  6,  7,

  1094.      8,  9, 10, 11, 12, 13, 14, 15,

  1095.     16, 17, 18, 19, 20, 21, 22, 23,

  1096.     24, 25, 26, 27, 28, 29, 30, 31,

  1097.     32, 33, 34, 35, 36, 37, 38, 39,

  1098.     40, 41, 42, 43, 44, 45, 46, 47,

  1099.     48, 49, 50, 51, 52, 53, 54, 55,

  1100.     56, 57, 58, 59, 60, 61, 62, 63

  1101. };

  1102. 

  1103. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1104.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1105. };

  1106. 

  1107. 

  1108. /**

  1109.  *  Run-value (RLE) tables.

  1110.  */

  1111. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1112. {   /* MapTab0 */

  1113.     5, /* eob_sym */

  1114.     2, /* esc_sym */

  1115.     /* run table */

  1116.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1117.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1118.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1119.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  1120.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1121.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1122.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1123.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1124.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1125.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1126.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1127.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1128.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1129.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1130.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1131.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1132. 

  1133.     /* value table */

  1134.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1135.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1136.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1137.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1138.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1139.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1140.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1141.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1142.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1143.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1144.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1145.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1146.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1147.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1148.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1149.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1150. },{

  1151.     /* MapTab1 */

  1152.     0,  /* eob_sym */

  1153.     38, /* esc_sym */

  1154.     /* run table */

  1155.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1156.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1157.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1158.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1159.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1160.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1161.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1162.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1163.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1164.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1165.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1166.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1167.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1168.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1169.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1170.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1171. 

  1172.     /* value table */

  1173.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1174.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1175.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  1176.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  1177.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1178.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1179.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1180.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1181.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1182.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1183.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1184.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1185.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1186.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1187.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1188.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1189. },{

  1190.     /* MapTab2 */

  1191.     2,  /* eob_sym */

  1192.     11, /* esc_sym */

  1193.     /* run table */

  1194.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1195.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1196.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1197.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1198.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1199.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1200.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1201.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1202.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1203.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1204.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1205.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1206.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1207.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1208.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1209.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1210. 

  1211.     /* value table */

  1212.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1213.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1214.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1215.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1216.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1217.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1218.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1219.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1220.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1221.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1222.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1223.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1224.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1225.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1226.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1227.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1228. },{

  1229.     /* MapTab3 */

  1230.     0,  /* eob_sym */

  1231.     35, /* esc_sym */

  1232.     /* run table */

  1233.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1234.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1235.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1236.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1237.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1238.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1239.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1240.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1241.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1242.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1243.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1244.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1245.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1246.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1247.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1248.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1249. 

  1250.     /* value table */

  1251.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1252.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1253.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1254.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1255.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1256.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1257.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1258.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1259.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1260.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1261.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1262.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1263.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1264.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1265.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1266.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1267. },{

  1268.     /* MapTab4 */

  1269.     0,  /* eob_sym */

  1270.     34, /* esc_sym */

  1271.     /* run table */

  1272.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1273.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1274.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1275.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1276.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1277.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1278.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1279.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1280.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1281.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1282.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1283.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1284.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1285.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1286.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1287.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1288. 

  1289.     /* value table */

  1290.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1291.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1292.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1293.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1294.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1295.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1296.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1297.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1298.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1299.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1300.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1301.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1302.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1303.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1304.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1305.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1306. },{

  1307.     /* MapTab5 */

  1308.     2,  /* eob_sym */

  1309.     33, /* esc_sym */

  1310.     /* run table */

  1311.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1312.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1313.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1314.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1315.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1316.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1317.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1318.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1319.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1320.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1321.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1322.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1323.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1324.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1325.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1326.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1327. 

  1328.     /* value table */

  1329.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1330.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1331.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1332.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1333.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1334.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1335.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1336.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1337.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1338.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1339.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1340.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1341.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1342.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1343.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1344.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1345. },{

  1346.     /* MapTab6 */

  1347.     2,  /* eob_sym */

  1348.     13, /* esc_sym */

  1349.     /* run table */

  1350.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1351.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1352.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1353.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1354.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1355.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1356.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1357.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1358.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1359.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1360.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1361.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1362.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1363.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1364.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1365.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1366. 

  1367.     /* value table */

  1368.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1369.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1370.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1371.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1372.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1373.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1374.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1375.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1376.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1377.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1378.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1379.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1380.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1381.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1382.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1383.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1384. },{

  1385.     /* MapTab7 */

  1386.     2,  /* eob_sym */

  1387.     38, /* esc_sym */

  1388.     /* run table */

  1389.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1390.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1391.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1392.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1393.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1394.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1395.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1396.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1397.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1398.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1399.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1400.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1401.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1402.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1403.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1404.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1405. 

  1406.     /* value table */

  1407.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1408.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1409.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1410.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1411.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1412.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1413.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1414.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1415.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1416.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1417.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1418.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1419.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1420.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1421.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1422.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1423. },{

  1424.     /* MapTab8 */

  1425.     4,  /* eob_sym */

  1426.     11, /* esc_sym */

  1427.     /* run table */

  1428.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1429.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1430.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1431.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1432.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1433.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1434.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1435.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1436.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1437.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1438.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1439.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1440.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1441.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1442.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1443.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1444. 

  1445.     /* value table */

  1446.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1447.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1448.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1449.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1450.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1451.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1452.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1453.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1454.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1455.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1456.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1457.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1458.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1459.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1460.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1461.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1462. }

  1463. };