falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74465 Commits
32 Branches
290MB
Tree: 1907e19d0c
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '1907e19d0c'
${ noResults }
FFmpeg/libavcodec/ivi.c

1598 lines
65KB
Raw Blame History 

  1. /*

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

  3.  *

  4.  * Copyright (c) 2009 Maxim Poliakovski

  5.  *

  6.  * This file is part of 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. #define BITSTREAM_READER_LE

  32. #include "libavutil/attributes.h"

  33. #include "libavutil/timer.h"

  34. #include "avcodec.h"

  35. #include "get_bits.h"

  36. #include "internal.h"

  37. #include "mathops.h"

  38. #include "ivi.h"

  39. #include "ivi_dsp.h"

  40. 

  41. /**

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

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

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

  45.  * startup from these descriptors.

  46.  */

  47. /** static macroblock huffman tables */

  48. static const IVIHuffDesc ivi_mb_huff_desc[8] = {

  49.     {8,  {0, 4, 5, 4, 4, 4, 6, 6}},

  50.     {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},

  51.     {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},

  52.     {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},

  53.     {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},

  54.     {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},

  55.     {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},

  56.     {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}

  57. };

  58. 

  59. /** static block huffman tables */

  60. static const IVIHuffDesc ivi_blk_huff_desc[8] = {

  61.     {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},

  62.     {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},

  63.     {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},

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

  65.     {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},

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

  67.     {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},

  68.     {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}

  69. };

  70. 

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

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

  73. 

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

  75.                              uint32_t pitch, int mc_type);

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

  77.                                  const int16_t *ref_buf2,

  78.                                  uint32_t pitch, int mc_type, int mc_type2);

  79. 

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

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

  82.                   int mc_type, int mc_type2)

  83. {

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

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

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

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

  88. 

  89.     if (mc_type != -1) {

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

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

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

  93.     }

  94. 

  95.     if (mc_type2 == -1) {

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

  97.     } else {

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

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

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

  101.             return AVERROR_INVALIDDATA;

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

  103.             return AVERROR_INVALIDDATA;

  104. 

  105.         if (mc_type == -1)

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

  107.                band->pitch, mc_type2);

  108.         else

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

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

  111.                    mc_type, mc_type2);

  112.     }

  113. 

  114.     return 0;

  115. }

  116. 

  117. /**

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

  119.  *  in the least significant bits.

  120.  */

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

  122. {

  123.     uint16_t res;

  124. 

  125.     if (nbits <= 8) {

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

  127.     } else

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

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

  130. 

  131.     return res;

  132. }

  133. 

  134. /*

  135.  *  Generate a huffman codebook from the given descriptor

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

  137.  *

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

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

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

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

  142.  */

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

  144. {

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

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

  147.     uint8_t     bits[256];

  148. 

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

  150. 

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

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

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

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

  155. 

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

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

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

  159. 

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

  161.             if (bits[pos] > IVI_VLC_BITS)

  162.                 return AVERROR_INVALIDDATA; /* invalid descriptor */

  163. 

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

  165.             if (!bits[pos])

  166.                 bits[pos] = 1;

  167. 

  168.             pos++;

  169.         }//for j

  170.     }//for i

  171. 

  172.     /* number of codewords = pos */

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

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

  175. }

  176. 

  177. av_cold void ff_ivi_init_static_vlc(void)

  178. {

  179.     int i;

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

  181.     static int initialized_vlcs = 0;

  182. 

  183.     if (initialized_vlcs)

  184.         return;

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

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

  187.         ivi_mb_vlc_tabs[i].table_allocated = 8192;

  188.         ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],

  189.                                   &ivi_mb_vlc_tabs[i], 1);

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

  191.         ivi_blk_vlc_tabs[i].table_allocated = 8192;

  192.         ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],

  193.                                   &ivi_blk_vlc_tabs[i], 1);

  194.     }

  195.     initialized_vlcs = 1;

  196. }

  197. 

  198. /*

  199.  *  Copy huffman codebook descriptors.

  200.  *

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

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

  203.  */

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

  205. {

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

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

  208. }

  209. 

  210. /*

  211.  *  Compare two huffman codebook descriptors.

  212.  *

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

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

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

  216.  */

  217. static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,

  218.                              const IVIHuffDesc *desc2)

  219. {

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

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

  222. }

  223. 

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

  225.                          IVIHuffTab *huff_tab, AVCodecContext *avctx)

  226. {

  227.     int i, result;

  228.     IVIHuffDesc new_huff;

  229. 

  230.     if (!desc_coded) {

  231.         /* select default table */

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

  233.                                     : &ivi_mb_vlc_tabs [7];

  234.         return 0;

  235.     }

  236. 

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

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

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

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

  241.         if (!new_huff.num_rows) {

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

  243.             return AVERROR_INVALIDDATA;

  244.         }

  245. 

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

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

  248. 

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

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

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

  252. 

  253.             if (huff_tab->cust_tab.table)

  254.                 ff_free_vlc(&huff_tab->cust_tab);

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

  256.                     &huff_tab->cust_tab, 0);

  257.             if (result) {

  258.                 // reset faulty description

  259.                 huff_tab->cust_desc.num_rows = 0;

  260.                 av_log(avctx, AV_LOG_ERROR,

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

  262.                 return result;

  263.             }

  264.         }

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

  266.     } else {

  267.         /* select one of predefined tables */

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

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

  270.     }

  271. 

  272.     return 0;

  273. }

  274. 

  275. /*

  276.  *  Free planes, bands and macroblocks buffers.

  277.  *

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

  279.  */

  280. static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)

  281. {

  282.     int p, b, t;

  283. 

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

  285.         if (planes[p].bands)

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

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

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

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

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

  291. 

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

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

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

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

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

  297.         }

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

  299.         planes[p].num_bands = 0;

  300.     }

  301. }

  302. 

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

  304.                                int is_indeo4)

  305. {

  306.     int p, b;

  307.     uint32_t b_width, b_height, align_fac, width_aligned,

  308.              height_aligned, buf_size;

  309.     IVIBandDesc *band;

  310. 

  311.     ivi_free_buffers(planes);

  312. 

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

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

  315.         return AVERROR_INVALIDDATA;

  316. 

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

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

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

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

  321. 

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

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

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

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

  326. 

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

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

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

  330.             return AVERROR(ENOMEM);

  331. 

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

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

  334.          *  has only half size */

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

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

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

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

  339. 

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

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

  342.         align_fac       = p ? 8 : 16;

  343.         width_aligned   = FFALIGN(b_width , align_fac);

  344.         height_aligned  = FFALIGN(b_height, align_fac);

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

  346. 

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

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

  349.             band->plane    = p;

  350.             band->band_num = b;

  351.             band->width    = b_width;

  352.             band->height   = b_height;

  353.             band->pitch    = width_aligned;

  354.             band->aheight  = height_aligned;

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

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

  357.             band->bufsize  = buf_size/2;

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

  359.                 return AVERROR(ENOMEM);

  360. 

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

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

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

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

  365.                     return AVERROR(ENOMEM);

  366.             }

  367.             if (is_indeo4) {

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

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

  370.                     return AVERROR(ENOMEM);

  371.             }

  372.             /* reset custom vlc */

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

  374.         }

  375.     }

  376. 

  377.     return 0;

  378. }

  379. 

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

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

  382. {

  383.     int x, y;

  384.     IVITile *tile = band->tiles;

  385. 

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

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

  388.             tile->xpos     = x;

  389.             tile->ypos     = y;

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

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

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

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

  394.             /* calculate number of macroblocks */

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

  396.                                               band->mb_size);

  397. 

  398.             av_freep(&tile->mbs);

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

  400.             if (!tile->mbs)

  401.                 return AVERROR(ENOMEM);

  402. 

  403.             tile->ref_mbs = 0;

  404.             if (p || b) {

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

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

  407.                     return AVERROR_INVALIDDATA;

  408.                 }

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

  410.                 ref_tile++;

  411.             }

  412.             tile++;

  413.         }

  414.     }

  415. 

  416.     return 0;

  417. }

  418. 

  419. av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,

  420.                               int tile_width, int tile_height)

  421. {

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

  423.     IVIBandDesc *band;

  424. 

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

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

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

  428. 

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

  430.             t_width  >>= 1;

  431.             t_height >>= 1;

  432.         }

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

  434.             return AVERROR(EINVAL);

  435. 

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

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

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

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

  440.             band->num_tiles = x_tiles * y_tiles;

  441. 

  442.             av_freep(&band->tiles);

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

  444.             if (!band->tiles)

  445.                 return AVERROR(ENOMEM);

  446. 

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

  448.              * and quant */

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

  450.                                  p, b, t_height, t_width);

  451.             if (ret < 0)

  452.                 return ret;

  453.         }

  454.     }

  455. 

  456.     return 0;

  457. }

  458. 

  459. /*

  460.  *  Decode size of the tile data.

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

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

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

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

  465.  *

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

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

  468.  */

  469. static int ivi_dec_tile_data_size(GetBitContext *gb)

  470. {

  471.     int    len;

  472. 

  473.     len = 0;

  474.     if (get_bits1(gb)) {

  475.         len = get_bits(gb, 8);

  476.         if (len == 255)

  477.             len = get_bits_long(gb, 24);

  478.     }

  479. 

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

  481.     align_get_bits(gb);

  482. 

  483.     return len;

  484. }

  485. 

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

  487.                             int blk_size)

  488. {

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

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

  491. 

  492.     if (min_size > buf_size)

  493.         return AVERROR_INVALIDDATA;

  494. 

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

  496.                        band->pitch, blk_size);

  497. 

  498.     return 0;

  499. }

  500. 

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

  502.                                    ivi_mc_func mc, ivi_mc_avg_func mc_avg,

  503.                                    int mv_x, int mv_y,

  504.                                    int mv_x2, int mv_y2,

  505.                                    int *prev_dc, int is_intra,

  506.                                    int mc_type, int mc_type2,

  507.                                    uint32_t quant, int offs,

  508.                                    AVCodecContext *avctx)

  509. {

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

  511.     RVMapDesc *rvmap = band->rv_map;

  512.     uint8_t col_flags[8];

  513.     int32_t trvec[64];

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

  515.     int pos, run, val;

  516.     int blk_size   = band->blk_size;

  517.     int num_coeffs = blk_size * blk_size;

  518.     int col_mask   = blk_size - 1;

  519.     int scan_pos   = -1;

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

  521.                      band->transform_size;

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

  523. 

  524.     if (min_size > buf_size)

  525.         return AVERROR_INVALIDDATA;

  526. 

  527.     if (!band->scan) {

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

  529.         return AVERROR_INVALIDDATA;

  530.     }

  531. 

  532.     /* zero transform vector */

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

  534.     /* zero column flags */

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

  536.     while (scan_pos <= num_coeffs) {

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

  538.                        IVI_VLC_BITS, 1);

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

  540.             break; /* End of block */

  541. 

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

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

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

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

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

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

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

  549.         } else {

  550.             if (sym >= 256U) {

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

  552.                 return AVERROR_INVALIDDATA;

  553.             }

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

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

  556.         }

  557. 

  558.         /* de-zigzag and dequantize */

  559.         scan_pos += run;

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

  561.             break;

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

  563. 

  564.         if (!val)

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

  566. 

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

  568.         if (q > 1)

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

  570.         trvec[pos] = val;

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

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

  573.     }

  574. 

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

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

  577. 

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

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

  580.         *prev_dc     += trvec[0];

  581.         trvec[0]      = *prev_dc;

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

  583.     }

  584. 

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

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

  587.         return AVERROR_INVALIDDATA;

  588.     }

  589. 

  590.     /* apply inverse transform */

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

  592.                         band->pitch, col_flags);

  593. 

  594.     /* apply motion compensation */

  595.     if (!is_intra)

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

  597.                       mc_type, mc_type2);

  598. 

  599.     return 0;

  600. }

  601. /*

  602.  *  Decode block data:

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

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

  605.  *  in order to reconstruct the picture.

  606.  *

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

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

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

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

  611.  */

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

  613.                              IVITile *tile, AVCodecContext *avctx)

  614. {

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

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

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

  618.     int32_t prev_dc;

  619.     uint32_t cbp, quant, buf_offs;

  620.     IVIMbInfo *mb;

  621.     ivi_mc_func mc_with_delta_func, mc_no_delta_func;

  622.     ivi_mc_avg_func mc_avg_with_delta_func, mc_avg_no_delta_func;

  623.     const uint8_t *scale_tab;

  624. 

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

  626.     prev_dc    = 0;

  627.     blk_size   = band->blk_size;

  628.     /* number of blocks per mb */

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

  630.     if (blk_size == 8) {

  631.         mc_with_delta_func     = ff_ivi_mc_8x8_delta;

  632.         mc_no_delta_func       = ff_ivi_mc_8x8_no_delta;

  633.         mc_avg_with_delta_func = ff_ivi_mc_avg_8x8_delta;

  634.         mc_avg_no_delta_func   = ff_ivi_mc_avg_8x8_no_delta;

  635.     } else {

  636.         mc_with_delta_func     = ff_ivi_mc_4x4_delta;

  637.         mc_no_delta_func       = ff_ivi_mc_4x4_no_delta;

  638.         mc_avg_with_delta_func = ff_ivi_mc_avg_4x4_delta;

  639.         mc_avg_no_delta_func   = ff_ivi_mc_avg_4x4_no_delta;

  640.     }

  641. 

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

  643.         is_intra = !mb->type;

  644.         cbp      = mb->cbp;

  645.         buf_offs = mb->buf_offs;

  646. 

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

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

  649.             quant = av_clip_uintp2(quant, 5);

  650.         else

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

  652. 

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

  654.         if (scale_tab)

  655.             quant = scale_tab[quant];

  656. 

  657.         if (!is_intra) {

  658.             mv_x  = mb->mv_x;

  659.             mv_y  = mb->mv_y;

  660.             mv_x2 = mb->b_mv_x;

  661.             mv_y2 = mb->b_mv_y;

  662.             if (band->is_halfpel) {

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

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

  665.                 mv_x  >>= 1;

  666.                 mv_y  >>= 1;

  667.                 mv_x2 >>= 1;

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

  669.             }

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

  671.                 mc_type = -1;

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

  673.                 mc_type2 = -1;

  674.             if (mb->type) {

  675.                 int dmv_x, dmv_y, cx, cy;

  676. 

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

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

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

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

  681. 

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

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

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

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

  686.                     return AVERROR_INVALIDDATA;

  687.                 }

  688.             }

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

  690.                 int dmv_x, dmv_y, cx, cy;

  691. 

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

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

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

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

  696. 

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

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

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

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

  701.                     return AVERROR_INVALIDDATA;

  702.                 }

  703.             }

  704.         }

  705. 

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

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

  708.             if (blk & 1) {

  709.                 buf_offs += blk_size;

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

  711.                 buf_offs -= blk_size;

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

  713.             }

  714. 

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

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

  717.                                               mc_avg_with_delta_func,

  718.                                               mv_x, mv_y, mv_x2, mv_y2,

  719.                                               &prev_dc, is_intra,

  720.                                               mc_type, mc_type2, quant,

  721.                                               buf_offs, avctx);

  722.                 if (ret < 0)

  723.                     return ret;

  724.             } else {

  725.                 /* block not coded */

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

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

  728.                 if (is_intra) {

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

  730.                     if (ret < 0)

  731.                         return ret;

  732.                 } else {

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

  734.                                  buf_offs, mv_x, mv_y, mv_x2, mv_y2,

  735.                                  mc_type, mc_type2);

  736.                     if (ret < 0)

  737.                         return ret;

  738.                 }

  739.             }

  740. 

  741.             cbp >>= 1;

  742.         }// for blk

  743.     }// for mbn

  744. 

  745.     align_get_bits(gb);

  746. 

  747.     return 0;

  748. }

  749. 

  750. /**

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

  752.  *  compensation respectively.

  753.  *

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

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

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

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

  758.  */

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

  760.                                   IVITile *tile, int32_t mv_scale)

  761. {

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

  763.     int             offs, mb_offset, row_offset, ret;

  764.     IVIMbInfo       *mb, *ref_mb;

  765.     const int16_t   *src;

  766.     int16_t         *dst;

  767.     ivi_mc_func     mc_no_delta_func;

  768. 

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

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

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

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

  773.         return AVERROR_INVALIDDATA;

  774.     }

  775. 

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

  777.     mb         = tile->mbs;

  778.     ref_mb     = tile->ref_mbs;

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

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

  781. 

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

  783.         mb_offset = offs;

  784. 

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

  786.             mb->xpos     = x;

  787.             mb->ypos     = y;

  788.             mb->buf_offs = mb_offset;

  789. 

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

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

  792. 

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

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

  795.                 mb->mv_x    = 0;

  796.                 mb->mv_y    = 0;

  797.             }

  798. 

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

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

  801. 

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

  803.                 /* motion vector inheritance */

  804.                 if (mv_scale) {

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

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

  807.                 } else {

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

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

  810.                 }

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

  812.                 {

  813.                     int dmv_x, dmv_y, cx, cy;

  814. 

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

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

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

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

  819. 

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

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

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

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

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

  825.                         return AVERROR_INVALIDDATA;

  826.                     }

  827.                 }

  828.             }

  829. 

  830.             mb++;

  831.             if (ref_mb)

  832.                 ref_mb++;

  833.             mb_offset += band->mb_size;

  834.         } // for x

  835.         offs += row_offset;

  836.     } // for y

  837. 

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

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

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

  841.                                                  : ff_ivi_mc_4x4_no_delta;

  842. 

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

  844.             mv_x = mb->mv_x;

  845.             mv_y = mb->mv_y;

  846.             if (!band->is_halfpel) {

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

  848.             } else {

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

  850.                 mv_x >>= 1;

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

  852.             }

  853. 

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

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

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

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

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

  859.                 if (ret < 0)

  860.                     return ret;

  861.             }

  862.         }

  863.     } else {

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

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

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

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

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

  869.             src += band->pitch;

  870.             dst += band->pitch;

  871.         }

  872.     }

  873. 

  874.     return 0;

  875. }

  876. 

  877. 

  878. #ifdef DEBUG

  879. static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)

  880. {

  881.     int         x, y;

  882.     int16_t     *src, checksum;

  883. 

  884.     src = band->buf;

  885.     checksum = 0;

  886. 

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

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

  889.             checksum += src[x];

  890. 

  891.     return checksum;

  892. }

  893. #endif

  894. 

  895. /*

  896.  *  Convert and output the current plane.

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

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

  899.  *

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

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

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

  903.  */

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

  905. {

  906.     int             x, y;

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

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

  909. 

  910.     if (!src)

  911.         return;

  912. 

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

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

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

  916.         src += pitch;

  917.         dst += dst_pitch;

  918.     }

  919. }

  920. 

  921. /**

  922.  *  Decode an Indeo 4 or 5 band.

  923.  *

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

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

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

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

  928.  */

  929. static int decode_band(IVI45DecContext *ctx,

  930.                        IVIBandDesc *band, AVCodecContext *avctx)

  931. {

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

  933.     IVITile     *tile;

  934. 

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

  936.     if (!band->buf) {

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

  938.         return AVERROR_INVALIDDATA;

  939.     }

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

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

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

  943.     } else {

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

  945.         band->b_ref_buf = 0;

  946.     }

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

  948. 

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

  950.     if (result) {

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

  952.                result);

  953.         return result;

  954.     }

  955. 

  956.     if (band->is_empty) {

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

  958.         return AVERROR_INVALIDDATA;

  959.     }

  960. 

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

  962. 

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

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

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

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

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

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

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

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

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

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

  973.     }

  974. 

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

  976. 

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

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

  979. 

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

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

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

  983.             return AVERROR_INVALIDDATA;

  984.         }

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

  986.         if (tile->is_empty) {

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

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

  989.             if (result < 0)

  990.                 break;

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

  992.         } else {

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

  994.             if (!tile->data_size) {

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

  996.                 result = AVERROR_INVALIDDATA;

  997.                 break;

  998.             }

  999. 

  1000.             result = ctx->decode_mb_info(ctx, band, tile, avctx);

  1001.             if (result < 0)

  1002.                 break;

  1003. 

  1004.             result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);

  1005.             if (result < 0) {

  1006.                 av_log(avctx, AV_LOG_ERROR,

  1007.                        "Corrupted tile data encountered!\n");

  1008.                 break;

  1009.             }

  1010. 

  1011.             if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {

  1012.                 av_log(avctx, AV_LOG_ERROR,

  1013.                        "Tile data_size mismatch!\n");

  1014.                 result = AVERROR_INVALIDDATA;

  1015.                 break;

  1016.             }

  1017. 

  1018.             pos += tile->data_size << 3; // skip to next tile

  1019.         }

  1020.     }

  1021. 

  1022.     /* restore the selected rvmap table by applying its corrections in

  1023.      * reverse order */

  1024.     for (i = band->num_corr-1; i >= 0; i--) {

  1025.         idx1 = band->corr[i*2];

  1026.         idx2 = band->corr[i*2+1];

  1027.         FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);

  1028.         FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);

  1029.         if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)

  1030.             band->rv_map->eob_sym ^= idx1 ^ idx2;

  1031.         if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)

  1032.             band->rv_map->esc_sym ^= idx1 ^ idx2;

  1033.     }

  1034. 

  1035. #ifdef DEBUG

  1036.     if (band->checksum_present) {

  1037.         uint16_t chksum = ivi_calc_band_checksum(band);

  1038.         if (chksum != band->checksum) {

  1039.             av_log(avctx, AV_LOG_ERROR,

  1040.                    "Band checksum mismatch! Plane %d, band %d, "

  1041.                    "received: %"PRIx32", calculated: %"PRIx16"\n",

  1042.                    band->plane, band->band_num, band->checksum, chksum);

  1043.         }

  1044.     }

  1045. #endif

  1046. 

  1047.     align_get_bits(&ctx->gb);

  1048. 

  1049.     return result;

  1050. }

  1051. 

  1052. int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

  1053.                         AVPacket *avpkt)

  1054. {

  1055.     IVI45DecContext *ctx = avctx->priv_data;

  1056.     const uint8_t   *buf = avpkt->data;

  1057.     AVFrame       *frame = data;

  1058.     int             buf_size = avpkt->size;

  1059.     int             result, p, b;

  1060. 

  1061.     init_get_bits(&ctx->gb, buf, buf_size * 8);

  1062.     ctx->frame_data = buf;

  1063.     ctx->frame_size = buf_size;

  1064. 

  1065.     result = ctx->decode_pic_hdr(ctx, avctx);

  1066.     if (result) {

  1067.         av_log(avctx, AV_LOG_ERROR,

  1068.                "Error while decoding picture header: %d\n", result);

  1069.         return result;

  1070.     }

  1071.     if (ctx->gop_invalid)

  1072.         return AVERROR_INVALIDDATA;

  1073. 

  1074.     if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_NULL_LAST) {

  1075.         if (ctx->got_p_frame) {

  1076.             av_frame_move_ref(data, ctx->p_frame);

  1077.             *got_frame = 1;

  1078.             ctx->got_p_frame = 0;

  1079.         } else {

  1080.             *got_frame = 0;

  1081.         }

  1082.         return buf_size;

  1083.     }

  1084. 

  1085.     if (ctx->gop_flags & IVI5_IS_PROTECTED) {

  1086.         avpriv_report_missing_feature(avctx, "Password-protected clip!\n");

  1087.         return AVERROR_PATCHWELCOME;

  1088.     }

  1089. 

  1090.     if (!ctx->planes[0].bands) {

  1091.         av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");

  1092.         return AVERROR_INVALIDDATA;

  1093.     }

  1094. 

  1095.     ctx->switch_buffers(ctx);

  1096. 

  1097.     //{ START_TIMER;

  1098. 

  1099.     if (ctx->is_nonnull_frame(ctx)) {

  1100.         ctx->buf_invalid[ctx->dst_buf] = 1;

  1101.         for (p = 0; p < 3; p++) {

  1102.             for (b = 0; b < ctx->planes[p].num_bands; b++) {

  1103.                 result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);

  1104.                 if (result < 0) {

  1105.                     av_log(avctx, AV_LOG_ERROR,

  1106.                            "Error while decoding band: %d, plane: %d\n", b, p);

  1107.                     return result;

  1108.                 }

  1109.             }

  1110.         }

  1111.         ctx->buf_invalid[ctx->dst_buf] = 0;

  1112.     } else {

  1113.         if (ctx->is_scalable)

  1114.             return AVERROR_INVALIDDATA;

  1115. 

  1116.         for (p = 0; p < 3; p++) {

  1117.             if (!ctx->planes[p].bands[0].buf)

  1118.                 return AVERROR_INVALIDDATA;

  1119.         }

  1120.     }

  1121.     if (ctx->buf_invalid[ctx->dst_buf])

  1122.         return -1;

  1123. 

  1124.     //STOP_TIMER("decode_planes"); }

  1125. 

  1126.     if (!ctx->is_nonnull_frame(ctx))

  1127.         return buf_size;

  1128. 

  1129.     result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);

  1130.     if (result < 0)

  1131.         return result;

  1132. 

  1133.     if ((result = ff_get_buffer(avctx, frame, 0)) < 0)

  1134.         return result;

  1135. 

  1136.     if (ctx->is_scalable) {

  1137.         if (ctx->is_indeo4)

  1138.             ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1139.         else

  1140.             ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1141.     } else {

  1142.         ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);

  1143.     }

  1144. 

  1145.     ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);

  1146.     ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);

  1147. 

  1148.     *got_frame = 1;

  1149. 

  1150.     /* If the bidirectional mode is enabled, next I and the following P

  1151.      * frame will be sent together. Unfortunately the approach below seems

  1152.      * to be the only way to handle the B-frames mode.

  1153.      * That's exactly the same Intel decoders do.

  1154.      */

  1155.     if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_INTRA) {

  1156.         int left;

  1157. 

  1158.             // skip version string

  1159.         while (get_bits(&ctx->gb, 8)) {

  1160.             if (get_bits_left(&ctx->gb) < 8)

  1161.                 return AVERROR_INVALIDDATA;

  1162.         }

  1163.         left = get_bits_count(&ctx->gb) & 0x18;

  1164.         skip_bits_long(&ctx->gb, 64 - left);

  1165.         if (get_bits_left(&ctx->gb) > 18 &&

  1166.             show_bits_long(&ctx->gb, 21) == 0xBFFF8) { // syncheader + inter type

  1167.             AVPacket pkt;

  1168.             pkt.data = avpkt->data + (get_bits_count(&ctx->gb) >> 3);

  1169.             pkt.size = get_bits_left(&ctx->gb) >> 3;

  1170.             ff_ivi_decode_frame(avctx, ctx->p_frame, &ctx->got_p_frame, &pkt);

  1171.         }

  1172.     }

  1173. 

  1174.     return buf_size;

  1175. }

  1176. 

  1177. /**

  1178.  *  Close Indeo5 decoder and clean up its context.

  1179.  */

  1180. av_cold int ff_ivi_decode_close(AVCodecContext *avctx)

  1181. {

  1182.     IVI45DecContext *ctx = avctx->priv_data;

  1183. 

  1184.     ivi_free_buffers(&ctx->planes[0]);

  1185. 

  1186.     if (ctx->mb_vlc.cust_tab.table)

  1187.         ff_free_vlc(&ctx->mb_vlc.cust_tab);

  1188. 

  1189. #if IVI4_STREAM_ANALYSER

  1190.     if (ctx->is_indeo4) {

  1191.     if (ctx->is_scalable)

  1192.         av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");

  1193.     if (ctx->uses_tiling)

  1194.         av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");

  1195.     if (ctx->has_b_frames)

  1196.         av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");

  1197.     if (ctx->has_transp)

  1198.         av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");

  1199.     if (ctx->uses_haar)

  1200.         av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");

  1201.     if (ctx->uses_fullpel)

  1202.         av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");

  1203.     }

  1204. #endif

  1205. 

  1206.     av_frame_free(&ctx->p_frame);

  1207. 

  1208.     return 0;

  1209. }

  1210. 

  1211. 

  1212. /**

  1213.  *  Scan patterns shared between indeo4 and indeo5

  1214.  */

  1215. const uint8_t ff_ivi_vertical_scan_8x8[64] = {

  1216.     0,  8, 16, 24, 32, 40, 48, 56,

  1217.     1,  9, 17, 25, 33, 41, 49, 57,

  1218.     2, 10, 18, 26, 34, 42, 50, 58,

  1219.     3, 11, 19, 27, 35, 43, 51, 59,

  1220.     4, 12, 20, 28, 36, 44, 52, 60,

  1221.     5, 13, 21, 29, 37, 45, 53, 61,

  1222.     6, 14, 22, 30, 38, 46, 54, 62,

  1223.     7, 15, 23, 31, 39, 47, 55, 63

  1224. };

  1225. 

  1226. const uint8_t ff_ivi_horizontal_scan_8x8[64] = {

  1227.      0,  1,  2,  3,  4,  5,  6,  7,

  1228.      8,  9, 10, 11, 12, 13, 14, 15,

  1229.     16, 17, 18, 19, 20, 21, 22, 23,

  1230.     24, 25, 26, 27, 28, 29, 30, 31,

  1231.     32, 33, 34, 35, 36, 37, 38, 39,

  1232.     40, 41, 42, 43, 44, 45, 46, 47,

  1233.     48, 49, 50, 51, 52, 53, 54, 55,

  1234.     56, 57, 58, 59, 60, 61, 62, 63

  1235. };

  1236. 

  1237. const uint8_t ff_ivi_direct_scan_4x4[16] = {

  1238.     0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15

  1239. };

  1240. 

  1241. 

  1242. /**

  1243.  *  Run-value (RLE) tables.

  1244.  */

  1245. const RVMapDesc ff_ivi_rvmap_tabs[9] = {

  1246. {   /* MapTab0 */

  1247.     5, /* eob_sym */

  1248.     2, /* esc_sym */

  1249.     /* run table */

  1250.     {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,

  1251.      1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,

  1252.      1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,

  1253.      8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,

  1254.      9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,

  1255.      2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,

  1256.      8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,

  1257.      2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,

  1258.      1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,

  1259.      6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,

  1260.     22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,

  1261.      4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,

  1262.      1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,

  1263.      1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,

  1264.      6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,

  1265.     30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

  1266. 

  1267.     /* value table */

  1268.     { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,

  1269.       6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,

  1270.      10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,

  1271.       1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,

  1272.      -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,

  1273.       7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,

  1274.       2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,

  1275.       9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,

  1276.      28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,

  1277.       3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,

  1278.      -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,

  1279.       5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,

  1280.     -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,

  1281.      37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,

  1282.       5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,

  1283.      -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}

  1284. },{

  1285.     /* MapTab1 */

  1286.     0,  /* eob_sym */

  1287.     38, /* esc_sym */

  1288.     /* run table */

  1289.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,

  1290.      7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,

  1291.     14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,

  1292.     25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,

  1293.     33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,

  1294.     37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,

  1295.     40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,

  1296.     57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,

  1297.     52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,

  1298.     60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,

  1299.     12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,

  1300.      1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,

  1301.     21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,

  1302.     29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,

  1303.     28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,

  1304.      2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

  1305. 

  1306.     /* value table */

  1307.     {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,

  1308.     -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,

  1309.     -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,

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

  1311.      1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,

  1312.      1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,

  1313.     -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,

  1314.     -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,

  1315.      1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,

  1316.      1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,

  1317.      2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,

  1318.      6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,

  1319.      2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,

  1320.      2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,

  1321.     -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,

  1322.     -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}

  1323. },{

  1324.     /* MapTab2 */

  1325.     2,  /* eob_sym */

  1326.     11, /* esc_sym */

  1327.     /* run table */

  1328.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,

  1329.      2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,

  1330.      2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,

  1331.      3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,

  1332.      1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,

  1333.      9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,

  1334.     23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,

  1335.     28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,

  1336.     49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,

  1337.      3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,

  1338.      1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,

  1339.     50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,

  1340.     45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,

  1341.     17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,

  1342.      7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,

  1343.      8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

  1344. 

  1345.     /* value table */

  1346.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,

  1347.       2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,

  1348.      -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,

  1349.       3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,

  1350.       7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,

  1351.       2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,

  1352.       1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,

  1353.       1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,

  1354.       1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,

  1355.      -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,

  1356.     -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,

  1357.      -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,

  1358.       1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,

  1359.      -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,

  1360.      -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,

  1361.      -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}

  1362. },{

  1363.     /* MapTab3 */

  1364.     0,  /* eob_sym */

  1365.     35, /* esc_sym */

  1366.     /* run table */

  1367.     {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,

  1368.      7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,

  1369.      3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,

  1370.      5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,

  1371.     21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,

  1372.      9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,

  1373.      2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,

  1374.     35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,

  1375.     12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,

  1376.     43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,

  1377.     57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,

  1378.      8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,

  1379.     59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,

  1380.     60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,

  1381.     25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,

  1382.     20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

  1383. 

  1384.     /* value table */

  1385.     { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,

  1386.      -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,

  1387.      -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,

  1388.       2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,

  1389.       1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,

  1390.       2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,

  1391.       4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,

  1392.      -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,

  1393.       2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,

  1394.       1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,

  1395.      -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,

  1396.      -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,

  1397.      -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,

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

  1399.      -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,

  1400.      -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}

  1401. },{

  1402.     /* MapTab4 */

  1403.     0,  /* eob_sym */

  1404.     34, /* esc_sym */

  1405.     /* run table */

  1406.     {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,

  1407.      2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,

  1408.      2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,

  1409.      9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,

  1410.      1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,

  1411.      2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,

  1412.      2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,

  1413.      3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,

  1414.      4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,

  1415.      1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,

  1416.      1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,

  1417.      5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,

  1418.      1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,

  1419.      3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,

  1420.      1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,

  1421.      1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

  1422. 

  1423.     /* value table */

  1424.     { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,

  1425.       2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,

  1426.       3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,

  1427.       1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,

  1428.      18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,

  1429.      -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,

  1430.       6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,

  1431.       4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,

  1432.       3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,

  1433.     -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,

  1434.     -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,

  1435.      -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,

  1436.     -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,

  1437.       6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,

  1438.      75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,

  1439.      83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}

  1440. },{

  1441.     /* MapTab5 */

  1442.     2,  /* eob_sym */

  1443.     33, /* esc_sym */

  1444.     /* run table */

  1445.     {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,

  1446.      1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,

  1447.      1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,

  1448.     12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,

  1449.      6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,

  1450.      8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,

  1451.      1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,

  1452.      4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,

  1453.      1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,

  1454.      2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,

  1455.      1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,

  1456.      3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,

  1457.      1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,

  1458.     36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,

  1459.      1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,

  1460.     40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

  1461. 

  1462.     /* value table */

  1463.     { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,

  1464.      -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,

  1465.      -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,

  1466.       1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,

  1467.       2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,

  1468.       2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,

  1469.      15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,

  1470.      -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,

  1471.     -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,

  1472.      -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,

  1473.      22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,

  1474.       7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,

  1475.      26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,

  1476.      -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,

  1477.      30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,

  1478.      -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}

  1479. },{

  1480.     /* MapTab6 */

  1481.     2,  /* eob_sym */

  1482.     13, /* esc_sym */

  1483.     /* run table */

  1484.     {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,

  1485.      4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,

  1486.      3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,

  1487.      4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,

  1488.      1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,

  1489.      6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,

  1490.     15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,

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

  1492.     17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,

  1493.      6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,

  1494.      4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,

  1495.      1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,

  1496.      1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,

  1497.     12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,

  1498.      4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,

  1499.     14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

  1500. 

  1501.     /* value table */

  1502.     {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,

  1503.        1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,

  1504.        2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,

  1505.        2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,

  1506.      -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,

  1507.        2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,

  1508.       -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,

  1509.       -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,

  1510.        1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,

  1511.       -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,

  1512.       -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,

  1513.      -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,

  1514.       45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,

  1515.       -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,

  1516.        6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,

  1517.        2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}

  1518. },{

  1519.     /* MapTab7 */

  1520.     2,  /* eob_sym */

  1521.     38, /* esc_sym */

  1522.     /* run table */

  1523.     {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,

  1524.      6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,

  1525.      1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,

  1526.     14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,

  1527.      8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,

  1528.     19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,

  1529.     24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,

  1530.     26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,

  1531.     28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,

  1532.     32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,

  1533.      6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,

  1534.     37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,

  1535.      3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,

  1536.      1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,

  1537.      8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,

  1538.     12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

  1539. 

  1540.     /* value table */

  1541.     { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,

  1542.      -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,

  1543.      -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,

  1544.       1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,

  1545.       2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,

  1546.      -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,

  1547.      -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,

  1548.       1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,

  1549.      -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,

  1550.      -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,

  1551.      -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,

  1552.      -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,

  1553.      -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,

  1554.      20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,

  1555.       5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,

  1556.       3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}

  1557. },{

  1558.     /* MapTab8 */

  1559.     4,  /* eob_sym */

  1560.     11, /* esc_sym */

  1561.     /* run table */

  1562.     {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,

  1563.      4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,

  1564.      7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,

  1565.      2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,

  1566.      4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,

  1567.      2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,

  1568.      1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,

  1569.     25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,

  1570.      1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,

  1571.      4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,

  1572.      6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,

  1573.     37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,

  1574.     13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,

  1575.      3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,

  1576.     44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,

  1577.     50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

  1578. 

  1579.     /* value table */

  1580.     { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,

  1581.       1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,

  1582.       1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,

  1583.       5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,

  1584.      -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,

  1585.       7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,

  1586.      15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,

  1587.       1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,

  1588.     -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,

  1589.      -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,

  1590.       4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,

  1591.       1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,

  1592.      -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,

  1593.       8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,

  1594.       1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,

  1595.       1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}

  1596. }

  1597. };