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FFmpeg/libavcodec/ivi.c

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  1. /*

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

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

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

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

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

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

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

  21.  */

  22. 

  23. /**

  24.  * @file

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

  26.  * Indeo5 decoders.

  27.  */

  28. 

  29. #include <inttypes.h>

  30. 

  31. #include "libavutil/attributes.h"

  32. #include "libavutil/imgutils.h"

  33. #include "libavutil/timer.h"

  34. 

  35. #define BITSTREAM_READER_LE

  36. #include "avcodec.h"

  37. #include "get_bits.h"

  38. #include "internal.h"

  39. #include "mathops.h"

  40. #include "ivi.h"

  41. #include "ivi_dsp.h"

  42. 

  43. /**

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

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

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

  47.  * startup from these descriptors.

  48.  */

  49. /** static macroblock huffman tables */

  50. static const IVIHuffDesc ivi_mb_huff_desc[8] = {

  51.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  52.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  53.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

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

  55.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  56.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  57.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  58.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  59. };

  60. 

  61. /** static block huffman tables */

  62. static const IVIHuffDesc ivi_blk_huff_desc[8] = {

  63.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  64.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  65.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

  66.     {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},

  67.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

  68.     {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},

  69.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  70.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  71. };

  72. 

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

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

  75. 

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

  77.                              ptrdiff_t pitch, int mc_type);

  78. typedef void (*ivi_mc_avg_func) (int16_t *buf, const int16_t *ref_buf1,

  79.                                  const int16_t *ref_buf2,

  80.                                  ptrdiff_t pitch, int mc_type, int mc_type2);

  81. 

  82. static int ivi_mc(const IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg,

  83.                   int offs, int mv_x, int mv_y, int mv_x2, int mv_y2,

  84.                   int mc_type, int mc_type2)

  85. {

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

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

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

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

  90. 

  91.     if (mc_type != -1) {

  92.         av_assert0(offs >= 0 && ref_offs >= 0 && band->ref_buf);

  93.         av_assert0(buf_size - min_size >= offs);

  94.         av_assert0(buf_size - min_size - ref_size >= ref_offs);

  95.     }

  96. 

  97.     if (mc_type2 == -1) {

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

  99.     } else {

  100.         int ref_offs2 = offs + mv_y2 * band->pitch + mv_x2;

  101.         int ref_size2 = (mc_type2 > 1) * band->pitch + (mc_type2 & 1);

  102.         if (offs < 0 || ref_offs2 < 0 || !band->b_ref_buf)

  103.             return AVERROR_INVALIDDATA;

  104.         if (buf_size - min_size - ref_size2 < ref_offs2)

  105.             return AVERROR_INVALIDDATA;

  106. 

  107.         if (mc_type == -1)

  108.             mc(band->buf + offs, band->b_ref_buf + ref_offs2,

  109.                band->pitch, mc_type2);

  110.         else

  111.             mc_avg(band->buf + offs, band->ref_buf + ref_offs,

  112.                    band->b_ref_buf + ref_offs2, band->pitch,

  113.                    mc_type, mc_type2);

  114.     }

  115. 

  116.     return 0;

  117. }

  118. 

  119. /**

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

  121.  *  in the least significant bits.

  122.  */

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

  124. {

  125.     uint16_t res;

  126. 

  127.     if (nbits <= 8) {

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

  129.     } else

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

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

  132. 

  133.     return res;

  134. }

  135. 

  136. /*

  137.  *  Generate a huffman codebook from the given descriptor

  138.  *  and convert it into the FFmpeg VLC table.

  139.  *

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

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

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

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

  144.  */

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

  146. {

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

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

  149.     uint8_t     bits[256];

  150. 

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

  152. 

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

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

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

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

  157. 

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

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

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

  161. 

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

  163.             if (bits[pos] > IVI_VLC_BITS)

  164.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  165. 

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

  167.             if (!bits[pos])

  168.                 bits[pos] = 1;

  169. 

  170.             pos++;

  171.         }//for j

  172.     }//for i

  173. 

  174.     /* number of codewords = pos */

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

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

  177. }

  178. 

  179. av_cold void ff_ivi_init_static_vlc(void)

  180. {

  181.     int i;

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

  183.     static int initialized_vlcs = 0;

  184. 

  185.     if (initialized_vlcs)

  186.         return;

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

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

  189.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  190.         ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],

  191.                                   &ivi_mb_vlc_tabs[i], 1);

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

  193.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  194.         ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],

  195.                                   &ivi_blk_vlc_tabs[i], 1);

  196.     }

  197.     initialized_vlcs = 1;

  198. }

  199. 

  200. /*

  201.  *  Copy huffman codebook descriptors.

  202.  *

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

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

  205.  */

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

  207. {

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

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

  210. }

  211. 

  212. /*

  213.  *  Compare two huffman codebook descriptors.

  214.  *

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

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

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

  218.  */

  219. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  220.                              const IVIHuffDesc *desc2)

  221. {

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

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

  224. }

  225. 

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

  227.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  228. {

  229.     int i, result;

  230.     IVIHuffDesc new_huff;

  231. 

  232.     if (!desc_coded) {

  233.         /* select default table */

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

  235.                                     : &ivi_mb_vlc_tabs [7];

  236.         return 0;

  237.     }

  238. 

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

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

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

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

  243.         if (!new_huff.num_rows) {

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

  245.             return AVERROR_INVALIDDATA;

  246.         }

  247. 

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

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

  250. 

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

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

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

  254. 

  255.             if (huff_tab->cust_tab.table)

  256.                 ff_free_vlc(&huff_tab->cust_tab);

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

  258.                     &huff_tab->cust_tab, 0);

  259.             if (result) {

  260.                 // reset faulty description

  261.                 huff_tab->cust_desc.num_rows = 0;

  262.                 av_log(avctx, AV_LOG_ERROR,

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

  264.                 return result;

  265.             }

  266.         }

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

  268.     } else {

  269.         /* select one of predefined tables */

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

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

  272.     }

  273. 

  274.     return 0;

  275. }

  276. 

  277. /*

  278.  *  Free planes, bands and macroblocks buffers.

  279.  *

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

  281.  */

  282. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  283. {

  284.     int p, b, t;

  285. 

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

  287.         if (planes[p].bands)

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

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

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

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

  292.             av_freep(&planes[p].bands[b].bufs[3]);

  293. 

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

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

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

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

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

  299.         }

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

  301.         planes[p].num_bands = 0;

  302.     }

  303. }

  304. 

  305. av_cold int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg,

  306.                                int is_indeo4)

  307. {

  308.     int p, b;

  309.     uint32_t b_width, b_height, align_fac, width_aligned,

  310.              height_aligned, buf_size;

  311.     IVIBandDesc *band;

  312. 

  313.     ivi_free_buffers(planes);

  314. 

  315.     if (av_image_check_size2(cfg->pic_width, cfg->pic_height, avctx->max_pixels, AV_PIX_FMT_YUV410P, 0, avctx) < 0 ||

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

  317.         return AVERROR_INVALIDDATA;

  318. 

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

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

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

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

  323. 

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

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

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

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

  328. 

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

  330.         planes[p].bands = av_mallocz_array(planes[p].num_bands, sizeof(IVIBandDesc));

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

  332.             return AVERROR(ENOMEM);

  333. 

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

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

  336.          *  has only half size */

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

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

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

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

  341. 

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

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

  344.         align_fac       = p ? 8 : 16;

  345.         width_aligned   = FFALIGN(b_width , align_fac);

  346.         height_aligned  = FFALIGN(b_height, align_fac);

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

  348. 

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

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

  351.             band->plane    = p;

  352.             band->band_num = b;

  353.             band->width    = b_width;

  354.             band->height   = b_height;

  355.             band->pitch    = width_aligned;

  356.             band->aheight  = height_aligned;

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

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

  359.             band->bufsize  = buf_size/2;

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

  361.                 return AVERROR(ENOMEM);

  362. 

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

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

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

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

  367.                     return AVERROR(ENOMEM);

  368.             }

  369.             if (is_indeo4) {

  370.                 band->bufs[3]  = av_mallocz(buf_size);

  371.                 if (!band->bufs[3])

  372.                     return AVERROR(ENOMEM);

  373.             }

  374.             /* reset custom vlc */

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

  376.         }

  377.     }

  378. 

  379.     return 0;

  380. }

  381. 

  382. static int ivi_init_tiles(const IVIBandDesc *band, IVITile *ref_tile,

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

  384. {

  385.     int x, y;

  386.     IVITile *tile = band->tiles;

  387. 

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

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

  390.             tile->xpos     = x;

  391.             tile->ypos     = y;

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

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

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

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

  396.             /* calculate number of macroblocks */

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

  398.                                               band->mb_size);

  399. 

  400.             av_freep(&tile->mbs);

  401.             tile->mbs = av_mallocz_array(tile->num_MBs, sizeof(IVIMbInfo));

  402.             if (!tile->mbs)

  403.                 return AVERROR(ENOMEM);

  404. 

  405.             tile->ref_mbs = 0;

  406.             if (p || b) {

  407.                 if (tile->num_MBs != ref_tile->num_MBs) {

  408.                     av_log(NULL, AV_LOG_DEBUG, "ref_tile mismatch\n");

  409.                     return AVERROR_INVALIDDATA;

  410.                 }

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

  412.                 ref_tile++;

  413.             }

  414.             tile++;

  415.         }

  416.     }

  417. 

  418.     return 0;

  419. }

  420. 

  421. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  422.                               int tile_width, int tile_height)

  423. {

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

  425.     IVIBandDesc *band;

  426. 

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

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

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

  430. 

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

  432.             t_width  >>= 1;

  433.             t_height >>= 1;

  434.         }

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

  436.             return AVERROR(EINVAL);

  437. 

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

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

  440. 

  441.             if (band->tiles) {

  442.                 int t;

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

  444.                     av_freep(&band->tiles[t].mbs);

  445.                 }

  446.             }

  447. 

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

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

  450.             band->num_tiles = x_tiles * y_tiles;

  451. 

  452.             av_freep(&band->tiles);

  453.             band->tiles = av_mallocz_array(band->num_tiles, sizeof(IVITile));

  454.             if (!band->tiles)

  455.                 return AVERROR(ENOMEM);

  456. 

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

  458.              * and quant */

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

  460.                                  p, b, t_height, t_width);

  461.             if (ret < 0)

  462.                 return ret;

  463.         }

  464.     }

  465. 

  466.     return 0;

  467. }

  468. 

  469. /*

  470.  *  Decode size of the tile data.

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

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

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

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

  475.  *

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

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

  478.  */

  479. static int ivi_dec_tile_data_size(GetBitContext *gb)

  480. {

  481.     int    len;

  482. 

  483.     len = 0;

  484.     if (get_bits1(gb)) {

  485.         len = get_bits(gb, 8);

  486.         if (len == 255)

  487.             len = get_bits_long(gb, 24);

  488.     }

  489. 

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

  491.     align_get_bits(gb);

  492. 

  493.     return len;

  494. }

  495. 

  496. static int ivi_dc_transform(const IVIBandDesc *band, int *prev_dc, int buf_offs,

  497.                             int blk_size)

  498. {

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

  500.                        band->pitch, blk_size);

  501. 

  502.     return 0;

  503. }

  504. 

  505. static int ivi_decode_coded_blocks(GetBitContext *gb, const IVIBandDesc *band,

  506.                                    ivi_mc_func mc, ivi_mc_avg_func mc_avg,

  507.                                    int mv_x, int mv_y,

  508.                                    int mv_x2, int mv_y2,

  509.                                    int *prev_dc, int is_intra,

  510.                                    int mc_type, int mc_type2,

  511.                                    uint32_t quant, int offs,

  512.                                    AVCodecContext *avctx)

  513. {

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

  515.     RVMapDesc *rvmap = band->rv_map;

  516.     uint8_t col_flags[8];

  517.     int32_t trvec[64];

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

  519.     int pos, run, val;

  520.     int blk_size   = band->blk_size;

  521.     int num_coeffs = blk_size * blk_size;

  522.     int col_mask   = blk_size - 1;

  523.     int scan_pos   = -1;

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

  525.                      band->transform_size;

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

  527. 

  528.     if (min_size > buf_size)

  529.         return AVERROR_INVALIDDATA;

  530. 

  531.     if (!band->scan) {

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

  533.         return AVERROR_INVALIDDATA;

  534.     }

  535. 

  536.     /* zero transform vector */

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

  538.     /* zero column flags */

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

  540.     while (scan_pos <= num_coeffs) {

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

  542.                        IVI_VLC_BITS, 1);

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

  544.             break; /* End of block */

  545. 

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

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

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

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

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

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

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

  553.         } else {

  554.             if (sym >= 256U) {

  555.                 av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %"PRIu32".\n", sym);

  556.                 return AVERROR_INVALIDDATA;

  557.             }

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

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

  560.         }

  561. 

  562.         /* de-zigzag and dequantize */

  563.         scan_pos += run;

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

  565.             break;

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

  567. 

  568.         if (!val)

  569.             ff_dlog(avctx, "Val = 0 encountered!\n");

  570. 

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

  572.         if (q > 1)

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

  574.         trvec[pos] = val;

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

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

  577.     }

  578. 

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

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

  581. 

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

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

  584.         *prev_dc     += trvec[0];

  585.         trvec[0]      = *prev_dc;

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

  587.     }

  588. 

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

  590.         av_log(NULL, AV_LOG_ERROR, "Too large transform\n");

  591.         return AVERROR_INVALIDDATA;

  592.     }

  593. 

  594.     /* apply inverse transform */

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

  596.                         band->pitch, col_flags);

  597. 

  598.     /* apply motion compensation */

  599.     if (!is_intra)

  600.         return ivi_mc(band, mc, mc_avg, offs, mv_x, mv_y, mv_x2, mv_y2,

  601.                       mc_type, mc_type2);

  602. 

  603.     return 0;

  604. }

  605. /*

  606.  *  Decode block data:

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

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

  609.  *  in order to reconstruct the picture.

  610.  *

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

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

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

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

  615.  */

  616. static int ivi_decode_blocks(GetBitContext *gb, const IVIBandDesc *band,

  617.                              IVITile *tile, AVCodecContext *avctx)

  618. {

  619.     int mbn, blk, num_blocks, blk_size, ret, is_intra;

  620.     int mc_type = 0, mc_type2 = -1;

  621.     int mv_x = 0, mv_y = 0, mv_x2 = 0, mv_y2 = 0;

  622.     int32_t prev_dc;

  623.     uint32_t cbp, quant, buf_offs;

  624.     IVIMbInfo *mb;

  625.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  626.     ivi_mc_avg_func mc_avg_with_delta_func, mc_avg_no_delta_func;

  627.     const uint8_t *scale_tab;

  628. 

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

  630.     prev_dc    = 0;

  631.     blk_size   = band->blk_size;

  632.     /* number of blocks per mb */

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

  634.     if (blk_size == 8) {

  635.         mc_with_delta_func     = ff_ivi_mc_8x8_delta;

  636.         mc_no_delta_func       = ff_ivi_mc_8x8_no_delta;

  637.         mc_avg_with_delta_func = ff_ivi_mc_avg_8x8_delta;

  638.         mc_avg_no_delta_func   = ff_ivi_mc_avg_8x8_no_delta;

  639.     } else {

  640.         mc_with_delta_func     = ff_ivi_mc_4x4_delta;

  641.         mc_no_delta_func       = ff_ivi_mc_4x4_no_delta;

  642.         mc_avg_with_delta_func = ff_ivi_mc_avg_4x4_delta;

  643.         mc_avg_no_delta_func   = ff_ivi_mc_avg_4x4_no_delta;

  644.     }

  645. 

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

  647.         is_intra = !mb->type;

  648.         cbp      = mb->cbp;

  649.         buf_offs = mb->buf_offs;

  650. 

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

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

  653.             quant = av_clip_uintp2(quant, 5);

  654.         else

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

  656. 

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

  658.         if (scale_tab)

  659.             quant = scale_tab[quant];

  660. 

  661.         if (!is_intra) {

  662.             mv_x  = mb->mv_x;

  663.             mv_y  = mb->mv_y;

  664.             mv_x2 = mb->b_mv_x;

  665.             mv_y2 = mb->b_mv_y;

  666.             if (band->is_halfpel) {

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

  668.                 mc_type2 = ((mv_y2 & 1) << 1) | (mv_x2 & 1);

  669.                 mv_x  >>= 1;

  670.                 mv_y  >>= 1;

  671.                 mv_x2 >>= 1;

  672.                 mv_y2 >>= 1; /* convert halfpel vectors into fullpel ones */

  673.             }

  674.             if (mb->type == 2)

  675.                 mc_type = -1;

  676.             if (mb->type != 2 && mb->type != 3)

  677.                 mc_type2 = -1;

  678.             if (mb->type) {

  679.                 int dmv_x, dmv_y, cx, cy;

  680. 

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

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

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

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

  685. 

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

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

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

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

  690.                     return AVERROR_INVALIDDATA;

  691.                 }

  692.             }

  693.             if (mb->type == 2 || mb->type == 3) {

  694.                 int dmv_x, dmv_y, cx, cy;

  695. 

  696.                 dmv_x = mb->b_mv_x >> band->is_halfpel;

  697.                 dmv_y = mb->b_mv_y >> band->is_halfpel;

  698.                 cx    = mb->b_mv_x &  band->is_halfpel;

  699.                 cy    = mb->b_mv_y &  band->is_halfpel;

  700. 

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

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

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

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

  705.                     return AVERROR_INVALIDDATA;

  706.                 }

  707.             }

  708.         }

  709. 

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

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

  712.             if (blk & 1) {

  713.                 buf_offs += blk_size;

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

  715.                 buf_offs -= blk_size;

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

  717.             }

  718. 

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

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

  721.                                               mc_avg_with_delta_func,

  722.                                               mv_x, mv_y, mv_x2, mv_y2,

  723.                                               &prev_dc, is_intra,

  724.                                               mc_type, mc_type2, quant,

  725.                                               buf_offs, avctx);

  726.                 if (ret < 0)

  727.                     return ret;

  728.             } else {

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

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

  731. 

  732.                 if (min_size > buf_size)

  733.                     return AVERROR_INVALIDDATA;

  734.                 /* block not coded */

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

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

  737.                 if (is_intra) {

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

  739.                     if (ret < 0)

  740.                         return ret;

  741.                 } else {

  742.                     ret = ivi_mc(band, mc_no_delta_func, mc_avg_no_delta_func,

  743.                                  buf_offs, mv_x, mv_y, mv_x2, mv_y2,

  744.                                  mc_type, mc_type2);

  745.                     if (ret < 0)

  746.                         return ret;

  747.                 }

  748.             }

  749. 

  750.             cbp >>= 1;

  751.         }// for blk

  752.     }// for mbn

  753. 

  754.     align_get_bits(gb);

  755. 

  756.     return 0;

  757. }

  758. 

  759. /**

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

  761.  *  compensation respectively.

  762.  *

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

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

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

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

  767.  */

  768. static int ivi_process_empty_tile(AVCodecContext *avctx, const IVIBandDesc *band,

  769.                                   IVITile *tile, int32_t mv_scale)

  770. {

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

  772.     int             offs, mb_offset, row_offset, ret;

  773.     IVIMbInfo       *mb, *ref_mb;

  774.     const int16_t   *src;

  775.     int16_t         *dst;

  776.     ivi_mc_func     mc_no_delta_func;

  777.     int             clear_first = !band->qdelta_present && !band->plane && !band->band_num;

  778.     int             mb_size     = band->mb_size;

  779.     int             xend        = tile->xpos + tile->width;

  780.     int             is_halfpel  = band->is_halfpel;

  781.     int             pitch       = band->pitch;

  782. 

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

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

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

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

  787.         return AVERROR_INVALIDDATA;

  788.     }

  789. 

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

  791.     mb         = tile->mbs;

  792.     ref_mb     = tile->ref_mbs;

  793.     row_offset = mb_size * pitch;

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

  795. 

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

  797.         mb_offset = offs;

  798. 

  799.         for (x = tile->xpos; x < xend; x += mb_size) {

  800.             mb->xpos     = x;

  801.             mb->ypos     = y;

  802.             mb->buf_offs = mb_offset;

  803. 

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

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

  806. 

  807.             if (clear_first) {

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

  809.                 mb->mv_x    = 0;

  810.                 mb->mv_y    = 0;

  811.             }

  812. 

  813.             if (ref_mb) {

  814.                 if (band->inherit_qdelta)

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

  816. 

  817.                 if (band->inherit_mv) {

  818.                     /* motion vector inheritance */

  819.                     if (mv_scale) {

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

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

  822.                     } else {

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

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

  825.                     }

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

  827.                     {

  828.                         int dmv_x, dmv_y, cx, cy;

  829. 

  830.                         dmv_x = mb->mv_x >> is_halfpel;

  831.                         dmv_y = mb->mv_y >> is_halfpel;

  832.                         cx    = mb->mv_x &  is_halfpel;

  833.                         cy    = mb->mv_y &  is_halfpel;

  834. 

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

  836.                             || mb->xpos + dmv_x + mb_size + cx > pitch

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

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

  839.                             av_log(avctx, AV_LOG_ERROR, "MV out of bounds\n");

  840.                             return AVERROR_INVALIDDATA;

  841.                         }

  842.                     }

  843.                 }

  844.                 ref_mb++;

  845.             }

  846. 

  847.             mb++;

  848.             mb_offset += mb_size;

  849.         } // for x

  850.         offs += row_offset;

  851.     } // for y

  852. 

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

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

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

  856.                                                  : ff_ivi_mc_4x4_no_delta;

  857. 

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

  859.             mv_x = mb->mv_x;

  860.             mv_y = mb->mv_y;

  861.             if (!band->is_halfpel) {

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

  863.             } else {

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

  865.                 mv_x >>= 1;

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

  867.             }

  868. 

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

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

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

  872.                 ret = ivi_mc(band, mc_no_delta_func, 0, offs,

  873.                              mv_x, mv_y, 0, 0, mc_type, -1);

  874.                 if (ret < 0)

  875.                     return ret;

  876.             }

  877.         }

  878.     } else {

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

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

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

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

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

  884.             src += pitch;

  885.             dst += pitch;

  886.         }

  887.     }

  888. 

  889.     return 0;

  890. }

  891. 

  892. 

  893. #ifdef DEBUG

  894. static uint16_t ivi_calc_band_checksum(const IVIBandDesc *band)

  895. {

  896.     int         x, y;

  897.     int16_t     *src, checksum;

  898. 

  899.     src = band->buf;

  900.     checksum = 0;

  901. 

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

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

  904.             checksum += src[x];

  905. 

  906.     return checksum;

  907. }

  908. #endif

  909. 

  910. /*

  911.  *  Convert and output the current plane.

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

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

  914.  *

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

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

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

  918.  */

  919. static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, ptrdiff_t dst_pitch)

  920. {

  921.     int             x, y;

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

  923.     ptrdiff_t       pitch = plane->bands[0].pitch;

  924. 

  925.     if (!src)

  926.         return;

  927. 

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

  929.         int m = 0;

  930.         int w = plane->width;

  931.         for (x = 0; x < w; x++) {

  932.             int t = src[x] + 128;

  933.             dst[x] = t;

  934.             m |= t;

  935.         }

  936.         if (m & ~255)

  937.             for (x = 0; x < w; x++)

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

  939.         src += pitch;

  940.         dst += dst_pitch;

  941.     }

  942. }

  943. 

  944. /**

  945.  *  Decode an Indeo 4 or 5 band.

  946.  *

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

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

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

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

  951.  */

  952. static int decode_band(IVI45DecContext *ctx,

  953.                        IVIBandDesc *band, AVCodecContext *avctx)

  954. {

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

  956.     IVITile     *tile;

  957. 

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

  959.     if (!band->buf) {

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

  961.         return AVERROR_INVALIDDATA;

  962.     }

  963.     if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_BIDIR) {

  964.         band->ref_buf   = band->bufs[ctx->b_ref_buf];

  965.         band->b_ref_buf = band->bufs[ctx->ref_buf];

  966.     } else {

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

  968.         band->b_ref_buf = 0;

  969.     }

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

  971. 

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

  973.     if (result) {

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

  975.                result);

  976.         return result;

  977.     }

  978. 

  979.     if (band->is_empty) {

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

  981.         return AVERROR_INVALIDDATA;

  982.     }

  983. 

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

  985. 

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

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

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

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

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

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

  992.         if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)

  993.             band->rv_map->eob_sym ^= idx1 ^ idx2;

  994.         if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)

  995.             band->rv_map->esc_sym ^= idx1 ^ idx2;

  996.     }

  997. 

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

  999. 

  1000.     for (t = 0; t < band->num_tiles; t++) {

  1001.         tile = &band->tiles[t];

  1002. 

  1003.         if (tile->mb_size != band->mb_size) {

  1004.             av_log(avctx, AV_LOG_ERROR, "MB sizes mismatch: %d vs. %d\n",

  1005.                    band->mb_size, tile->mb_size);

  1006.             return AVERROR_INVALIDDATA;

  1007.         }

  1008.         tile->is_empty = get_bits1(&ctx->gb);

  1009.         if (tile->is_empty) {

  1010.             result = ivi_process_empty_tile(avctx, band, tile,

  1011.                                       (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));

  1012.             if (result < 0)

  1013.                 break;

  1014.             ff_dlog(avctx, "Empty tile encountered!\n");

  1015.         } else {

  1016.             tile->data_size = ivi_dec_tile_data_size(&ctx->gb);

  1017.             if (!tile->data_size) {

  1018.                 av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");

  1019.                 result = AVERROR_INVALIDDATA;

  1020.                 break;

  1021.             }

  1022. 

  1023.             result = ctx->decode_mb_info(ctx, band, tile, avctx);

  1024.             if (result < 0)

  1025.                 break;

  1026. 

  1027.             result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);

  1028.             if (result < 0) {

  1029.                 av_log(avctx, AV_LOG_ERROR,

  1030.                        "Corrupted tile data encountered!\n");

  1031.                 break;

  1032.             }

  1033. 

  1034.             if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {

  1035.                 av_log(avctx, AV_LOG_ERROR,

  1036.                        "Tile data_size mismatch!\n");

  1037.                 result = AVERROR_INVALIDDATA;

  1038.                 break;

  1039.             }

  1040. 

  1041.             pos += tile->data_size << 3; // skip to next tile

  1042.         }

  1043.     }

  1044. 

  1045.     /* restore the selected rvmap table by applying its corrections in

  1046.      * reverse order */

  1047.     for (i = band->num_corr-1; i >= 0; i--) {

  1048.         idx1 = band->corr[i*2];

  1049.         idx2 = band->corr[i*2+1];

  1050.         FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);

  1051.         FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);

  1052.         if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)

  1053.             band->rv_map->eob_sym ^= idx1 ^ idx2;

  1054.         if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)

  1055.             band->rv_map->esc_sym ^= idx1 ^ idx2;

  1056.     }

  1057. 

  1058. #ifdef DEBUG

  1059.     if (band->checksum_present) {

  1060.         uint16_t chksum = ivi_calc_band_checksum(band);

  1061.         if (chksum != band->checksum) {

  1062.             av_log(avctx, AV_LOG_ERROR,

  1063.                    "Band checksum mismatch! Plane %d, band %d, "

  1064.                    "received: %"PRIx32", calculated: %"PRIx16"\n",

  1065.                    band->plane, band->band_num, band->checksum, chksum);

  1066.         }

  1067.     }

  1068. #endif

  1069. 

  1070.     align_get_bits(&ctx->gb);

  1071. 

  1072.     return result;

  1073. }

  1074. 

  1075. int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

  1076.                         AVPacket *avpkt)

  1077. {

  1078.     IVI45DecContext *ctx = avctx->priv_data;

  1079.     const uint8_t   *buf = avpkt->data;

  1080.     AVFrame       *frame = data;

  1081.     int             buf_size = avpkt->size;

  1082.     int             result, p, b;

  1083. 

  1084.     result = init_get_bits8(&ctx->gb, buf, buf_size);

  1085.     if (result < 0)

  1086.         return result;

  1087.     ctx->frame_data = buf;

  1088.     ctx->frame_size = buf_size;

  1089. 

  1090.     result = ctx->decode_pic_hdr(ctx, avctx);

  1091.     if (result) {

  1092.         av_log(avctx, AV_LOG_ERROR,

  1093.                "Error while decoding picture header: %d\n", result);

  1094.         return result;

  1095.     }

  1096.     if (ctx->gop_invalid)

  1097.         return AVERROR_INVALIDDATA;

  1098. 

  1099.     if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_NULL_LAST) {

  1100.         if (ctx->got_p_frame) {

  1101.             av_frame_move_ref(data, ctx->p_frame);

  1102.             *got_frame = 1;

  1103.             ctx->got_p_frame = 0;

  1104.         } else {

  1105.             *got_frame = 0;

  1106.         }

  1107.         return buf_size;

  1108.     }

  1109. 

  1110.     if (ctx->gop_flags & IVI5_IS_PROTECTED) {

  1111.         avpriv_report_missing_feature(avctx, "Password-protected clip");

  1112.         return AVERROR_PATCHWELCOME;

  1113.     }

  1114. 

  1115.     if (!ctx->planes[0].bands) {

  1116.         av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");

  1117.         return AVERROR_INVALIDDATA;

  1118.     }

  1119. 

  1120.     ctx->switch_buffers(ctx);

  1121. 

  1122.     //{ START_TIMER;

  1123. 

  1124.     if (ctx->is_nonnull_frame(ctx)) {

  1125.         ctx->buf_invalid[ctx->dst_buf] = 1;

  1126.         for (p = 0; p < 3; p++) {

  1127.             for (b = 0; b < ctx->planes[p].num_bands; b++) {

  1128.                 result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);

  1129.                 if (result < 0) {

  1130.                     av_log(avctx, AV_LOG_ERROR,

  1131.                            "Error while decoding band: %d, plane: %d\n", b, p);

  1132.                     return result;

  1133.                 }

  1134.             }

  1135.         }

  1136.         ctx->buf_invalid[ctx->dst_buf] = 0;

  1137.     } else {

  1138.         if (ctx->is_scalable)

  1139.             return AVERROR_INVALIDDATA;

  1140. 

  1141.         for (p = 0; p < 3; p++) {

  1142.             if (!ctx->planes[p].bands[0].buf)

  1143.                 return AVERROR_INVALIDDATA;

  1144.         }

  1145.     }

  1146.     if (ctx->buf_invalid[ctx->dst_buf])

  1147.         return -1;

  1148. 

  1149.     //STOP_TIMER("decode_planes"); }

  1150. 

  1151.     if (!ctx->is_nonnull_frame(ctx))

  1152.         return buf_size;

  1153. 

  1154.     result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  1155.     if (result < 0)

  1156.         return result;

  1157. 

  1158.     if ((result = ff_get_buffer(avctx, frame, 0)) < 0)

  1159.         return result;

  1160. 

  1161.     if (ctx->is_scalable) {

  1162.         if (ctx->is_indeo4)

  1163.             ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1164.         else

  1165.             ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1166.     } else {

  1167.         ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1168.     }

  1169. 

  1170.     ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);

  1171.     ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);

  1172. 

  1173.     *got_frame = 1;

  1174. 

  1175.     /* If the bidirectional mode is enabled, next I and the following P

  1176.      * frame will be sent together. Unfortunately the approach below seems

  1177.      * to be the only way to handle the B-frames mode.

  1178.      * That's exactly the same Intel decoders do.

  1179.      */

  1180.     if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_INTRA) {

  1181.         int left;

  1182. 

  1183.             // skip version string

  1184.         while (get_bits(&ctx->gb, 8)) {

  1185.             if (get_bits_left(&ctx->gb) < 8)

  1186.                 return AVERROR_INVALIDDATA;

  1187.         }

  1188.         left = get_bits_count(&ctx->gb) & 0x18;

  1189.         skip_bits_long(&ctx->gb, 64 - left);

  1190.         if (get_bits_left(&ctx->gb) > 18 &&

  1191.             show_bits_long(&ctx->gb, 21) == 0xBFFF8) { // syncheader + inter type

  1192.             AVPacket pkt;

  1193.             pkt.data = avpkt->data + (get_bits_count(&ctx->gb) >> 3);

  1194.             pkt.size = get_bits_left(&ctx->gb) >> 3;

  1195.             ff_ivi_decode_frame(avctx, ctx->p_frame, &ctx->got_p_frame, &pkt);

  1196.         }

  1197.     }

  1198. 

  1199.     if (ctx->show_indeo4_info) {

  1200.         if (ctx->is_scalable)

  1201.             av_log(avctx, AV_LOG_DEBUG, "This video uses scalability mode\n");

  1202.         if (ctx->uses_tiling)

  1203.             av_log(avctx, AV_LOG_DEBUG, "This video uses local decoding\n");

  1204.         if (ctx->has_b_frames)

  1205.             av_log(avctx, AV_LOG_DEBUG, "This video contains B-frames\n");

  1206.         if (ctx->has_transp)

  1207.             av_log(avctx, AV_LOG_DEBUG, "Transparency mode is enabled\n");

  1208.         if (ctx->uses_haar)

  1209.             av_log(avctx, AV_LOG_DEBUG, "This video uses Haar transform\n");

  1210.         if (ctx->uses_fullpel)

  1211.             av_log(avctx, AV_LOG_DEBUG, "This video uses fullpel motion vectors\n");

  1212.         ctx->show_indeo4_info = 0;

  1213.     }

  1214. 

  1215.     return buf_size;

  1216. }

  1217. 

  1218. /**

  1219.  *  Close Indeo5 decoder and clean up its context.

  1220.  */

  1221. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  1222. {

  1223.     IVI45DecContext *ctx = avctx->priv_data;

  1224. 

  1225.     ivi_free_buffers(&ctx->planes[0]);

  1226. 

  1227.     if (ctx->mb_vlc.cust_tab.table)

  1228.         ff_free_vlc(&ctx->mb_vlc.cust_tab);

  1229. 

  1230.     if (ctx->blk_vlc.cust_tab.table)

  1231.         ff_free_vlc(&ctx->blk_vlc.cust_tab);

  1232. 

  1233.     av_frame_free(&ctx->p_frame);

  1234. 

  1235.     return 0;

  1236. }

  1237. 

  1238. 

  1239. /**

  1240.  *  Scan patterns shared between indeo4 and indeo5

  1241.  */

  1242. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1243.     0,  8, 16, 24, 32, 40, 48, 56,

  1244.     1,  9, 17, 25, 33, 41, 49, 57,

  1245.     2, 10, 18, 26, 34, 42, 50, 58,

  1246.     3, 11, 19, 27, 35, 43, 51, 59,

  1247.     4, 12, 20, 28, 36, 44, 52, 60,

  1248.     5, 13, 21, 29, 37, 45, 53, 61,

  1249.     6, 14, 22, 30, 38, 46, 54, 62,

  1250.     7, 15, 23, 31, 39, 47, 55, 63

  1251. };

  1252. 

  1253. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1254.      0,  1,  2,  3,  4,  5,  6,  7,

  1255.      8,  9, 10, 11, 12, 13, 14, 15,

  1256.     16, 17, 18, 19, 20, 21, 22, 23,

  1257.     24, 25, 26, 27, 28, 29, 30, 31,

  1258.     32, 33, 34, 35, 36, 37, 38, 39,

  1259.     40, 41, 42, 43, 44, 45, 46, 47,

  1260.     48, 49, 50, 51, 52, 53, 54, 55,

  1261.     56, 57, 58, 59, 60, 61, 62, 63

  1262. };

  1263. 

  1264. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1265.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1266. };

  1267. 

  1268. 

  1269. /**

  1270.  *  Run-value (RLE) tables.

  1271.  */

  1272. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1273. {   /* MapTab0 */

  1274.     5, /* eob_sym */

  1275.     2, /* esc_sym */

  1276.     /* run table */

  1277.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1278.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1279.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1280.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

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

  1282.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1283.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1284.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1285.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1286.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1287.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1288.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1289.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1290.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1291.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1292.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1293. 

  1294.     /* value table */

  1295.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1296.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1297.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1298.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1299.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1300.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1301.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1302.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1303.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1304.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1305.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1306.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1307.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1308.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1309.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1310.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1311. },{

  1312.     /* MapTab1 */

  1313.     0,  /* eob_sym */

  1314.     38, /* esc_sym */

  1315.     /* run table */

  1316.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1317.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1318.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1319.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1320.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1321.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1322.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1323.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1324.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1325.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1326.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1327.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1328.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1329.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1330.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1331.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1332. 

  1333.     /* value table */

  1334.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1335.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1336.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

  1337.      1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,

  1338.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1339.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1340.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1341.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1342.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1343.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1344.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1345.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1346.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1347.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1348.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1349.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1350. },{

  1351.     /* MapTab2 */

  1352.     2,  /* eob_sym */

  1353.     11, /* esc_sym */

  1354.     /* run table */

  1355.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1356.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1357.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1358.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1359.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1360.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1361.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1362.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1363.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1364.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1365.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1366.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1367.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1368.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1369.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1370.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1371. 

  1372.     /* value table */

  1373.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1374.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1375.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1376.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1377.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1378.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1379.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1380.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1381.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1382.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1383.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1384.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1385.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1386.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1387.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1388.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1389. },{

  1390.     /* MapTab3 */

  1391.     0,  /* eob_sym */

  1392.     35, /* esc_sym */

  1393.     /* run table */

  1394.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1395.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1396.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1397.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1398.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1399.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1400.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1401.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1402.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1403.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1404.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1405.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1406.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1407.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1408.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1409.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1410. 

  1411.     /* value table */

  1412.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1413.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1414.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1415.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1416.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1417.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1418.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1419.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1420.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1421.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1422.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1423.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1424.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

  1425.       1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,

  1426.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1427.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1428. },{

  1429.     /* MapTab4 */

  1430.     0,  /* eob_sym */

  1431.     34, /* esc_sym */

  1432.     /* run table */

  1433.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1434.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1435.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1436.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1437.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1438.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1439.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1440.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1441.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1442.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1443.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1444.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1445.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1446.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1447.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1448.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1449. 

  1450.     /* value table */

  1451.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1452.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1453.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1454.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1455.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1456.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1457.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1458.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1459.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1460.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1461.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1462.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1463.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1464.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1465.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1466.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1467. },{

  1468.     /* MapTab5 */

  1469.     2,  /* eob_sym */

  1470.     33, /* esc_sym */

  1471.     /* run table */

  1472.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1473.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1474.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1475.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1476.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1477.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1478.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1479.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1480.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1481.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1482.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1483.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1484.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1485.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1486.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1487.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1488. 

  1489.     /* value table */

  1490.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1491.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1492.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1493.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1494.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1495.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1496.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1497.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1498.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1499.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1500.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1501.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1502.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1503.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1504.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1505.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1506. },{

  1507.     /* MapTab6 */

  1508.     2,  /* eob_sym */

  1509.     13, /* esc_sym */

  1510.     /* run table */

  1511.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1512.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1513.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1514.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1515.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1516.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1517.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

  1518.      2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,

  1519.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1520.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1521.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1522.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1523.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1524.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1525.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1526.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1527. 

  1528.     /* value table */

  1529.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1530.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1531.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1532.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1533.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1534.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1535.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1536.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1537.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1538.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1539.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1540.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1541.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1542.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1543.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1544.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1545. },{

  1546.     /* MapTab7 */

  1547.     2,  /* eob_sym */

  1548.     38, /* esc_sym */

  1549.     /* run table */

  1550.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1551.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1552.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1553.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1554.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1555.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1556.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1557.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1558.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1559.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1560.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1561.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1562.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1563.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1564.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1565.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1566. 

  1567.     /* value table */

  1568.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1569.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1570.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1571.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1572.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1573.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1574.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1575.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1576.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1577.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1578.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1579.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1580.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1581.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1582.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1583.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1584. },{

  1585.     /* MapTab8 */

  1586.     4,  /* eob_sym */

  1587.     11, /* esc_sym */

  1588.     /* run table */

  1589.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1590.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1591.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1592.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1593.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1594.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1595.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1596.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1597.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1598.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1599.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1600.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1601.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1602.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1603.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1604.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1605. 

  1606.     /* value table */

  1607.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1608.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1609.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1610.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1611.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1612.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1613.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1614.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1615.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1616.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1617.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1618.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1619.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1620.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1621.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1622.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1623. }

  1624. };