ivi.c 65.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
/*
 * common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
 *
 * Copyright (c) 2009 Maxim Poliakovski
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
24
 * @file
25 26 27 28
 * This file contains functions and data shared by both Indeo4 and
 * Indeo5 decoders.
 */

29 30
#include <inttypes.h>

31
#include "libavutil/attributes.h"
32
#include "libavutil/imgutils.h"
33
#include "libavutil/timer.h"
34 35

#define BITSTREAM_READER_LE
36 37
#include "avcodec.h"
#include "get_bits.h"
38
#include "internal.h"
39
#include "mathops.h"
40
#include "ivi.h"
41 42
#include "ivi_dsp.h"

43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
/**
 * These are 2x8 predefined Huffman codebooks for coding macroblock/block
 * signals. They are specified using "huffman descriptors" in order to
 * avoid huge static tables. The decoding tables will be generated at
 * startup from these descriptors.
 */
/** static macroblock huffman tables */
static const IVIHuffDesc ivi_mb_huff_desc[8] = {
    {8,  {0, 4, 5, 4, 4, 4, 6, 6}},
    {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},
    {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},
    {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},
    {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},
    {9,  {0, 4, 4, 4, 4, 3, 3, 3, 2}},
    {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},
    {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}
};

/** static block huffman tables */
static const IVIHuffDesc ivi_blk_huff_desc[8] = {
    {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},
    {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},
    {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},
    {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},
    {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},
    {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},
    {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},
    {9,  {3, 4, 4, 5, 5, 5, 6, 5, 5}}
};
72

73 74
static VLC ivi_mb_vlc_tabs [8]; ///< static macroblock Huffman tables
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 79
typedef void (*ivi_mc_avg_func) (int16_t *buf, const int16_t *ref_buf1,
                                 const int16_t *ref_buf2,
80
                                 ptrdiff_t pitch, int mc_type, int mc_type2);
81

82 83 84
static int ivi_mc(IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg,
                  int offs, int mv_x, int mv_y, int mv_x2, int mv_y2,
                  int mc_type, int mc_type2)
85
{
86 87 88 89
    int ref_offs = offs + mv_y * band->pitch + mv_x;
    int buf_size = band->pitch * band->aheight;
    int min_size = band->pitch * (band->blk_size - 1) + band->blk_size;
    int ref_size = (mc_type > 1) * band->pitch + (mc_type & 1);
90

91
    if (mc_type != -1) {
92 93 94
        av_assert0(offs >= 0 && ref_offs >= 0 && band->ref_buf);
        av_assert0(buf_size - min_size >= offs);
        av_assert0(buf_size - min_size - ref_size >= ref_offs);
95
    }
96

97 98 99 100 101 102 103 104 105
    if (mc_type2 == -1) {
        mc(band->buf + offs, band->ref_buf + ref_offs, band->pitch, mc_type);
    } else {
        int ref_offs2 = offs + mv_y2 * band->pitch + mv_x2;
        int ref_size2 = (mc_type2 > 1) * band->pitch + (mc_type2 & 1);
        if (offs < 0 || ref_offs2 < 0 || !band->b_ref_buf)
            return AVERROR_INVALIDDATA;
        if (buf_size - min_size - ref_size2 < ref_offs2)
            return AVERROR_INVALIDDATA;
106

107 108 109 110 111 112 113 114
        if (mc_type == -1)
            mc(band->buf + offs, band->b_ref_buf + ref_offs2,
               band->pitch, mc_type2);
        else
            mc_avg(band->buf + offs, band->ref_buf + ref_offs,
                   band->b_ref_buf + ref_offs2, band->pitch,
                   mc_type, mc_type2);
    }
115 116 117 118

    return 0;
}

119
/**
120
 *  Reverse "nbits" bits of the value "val" and return the result
121 122 123 124 125 126 127
 *  in the least significant bits.
 */
static uint16_t inv_bits(uint16_t val, int nbits)
{
    uint16_t res;

    if (nbits <= 8) {
128
        res = ff_reverse[val] >> (8 - nbits);
129
    } else
130 131
        res = ((ff_reverse[val & 0xFF] << 8) +
               (ff_reverse[val >> 8])) >> (16 - nbits);
132 133 134 135

    return res;
}

136 137
/*
 *  Generate a huffman codebook from the given descriptor
138
 *  and convert it into the FFmpeg VLC table.
139 140 141 142 143 144 145
 *
 *  @param[in]   cb    pointer to codebook descriptor
 *  @param[out]  vlc   where to place the generated VLC table
 *  @param[in]   flag  flag: 1 - for static or 0 for dynamic tables
 *  @return     result code: 0 - OK, -1 = error (invalid codebook descriptor)
 */
static int ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
{
    int         pos, i, j, codes_per_row, prefix, not_last_row;
    uint16_t    codewords[256]; /* FIXME: move this temporal storage out? */
    uint8_t     bits[256];

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

    for (i = 0; i < cb->num_rows; i++) {
        codes_per_row = 1 << cb->xbits[i];
        not_last_row  = (i != cb->num_rows - 1);
        prefix        = ((1 << i) - 1) << (cb->xbits[i] + not_last_row);

        for (j = 0; j < codes_per_row; j++) {
            if (pos >= 256) /* Some Indeo5 codebooks can have more than 256 */
                break;      /* elements, but only 256 codes are allowed! */

            bits[pos] = i + cb->xbits[i] + not_last_row;
            if (bits[pos] > IVI_VLC_BITS)
164
                return AVERROR_INVALIDDATA; /* invalid descriptor */
165 166 167 168 169 170 171 172 173 174 175

            codewords[pos] = inv_bits((prefix | j), bits[pos]);
            if (!bits[pos])
                bits[pos] = 1;

            pos++;
        }//for j
    }//for i

    /* number of codewords = pos */
    return init_vlc(vlc, IVI_VLC_BITS, pos, bits, 1, 1, codewords, 2, 2,
176 177 178
                    (flag ? INIT_VLC_USE_NEW_STATIC : 0) | INIT_VLC_LE);
}

179
av_cold void ff_ivi_init_static_vlc(void)
180 181
{
    int i;
182
    static VLC_TYPE table_data[8192 * 16][2];
183 184 185 186 187
    static int initialized_vlcs = 0;

    if (initialized_vlcs)
        return;
    for (i = 0; i < 8; i++) {
188 189
        ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;
        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);
192 193
        ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;
        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
}

200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218
/*
 *  Copy huffman codebook descriptors.
 *
 *  @param[out]  dst  ptr to the destination descriptor
 *  @param[in]   src  ptr to the source descriptor
 */
static void ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)
{
    dst->num_rows = src->num_rows;
    memcpy(dst->xbits, src->xbits, src->num_rows);
}

/*
 *  Compare two huffman codebook descriptors.
 *
 *  @param[in]  desc1  ptr to the 1st descriptor to compare
 *  @param[in]  desc2  ptr to the 2nd descriptor to compare
 *  @return         comparison result: 0 - equal, 1 - not equal
 */
219 220
static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,
                             const IVIHuffDesc *desc2)
221
{
222 223
    return desc1->num_rows != desc2->num_rows ||
           memcmp(desc1->xbits, desc2->xbits, desc1->num_rows);
224 225
}

226 227
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
                         IVIHuffTab *huff_tab, AVCodecContext *avctx)
228
{
229
    int i, result;
230
    IVIHuffDesc new_huff;
231

232 233
    if (!desc_coded) {
        /* select default table */
234
        huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[7]
235 236 237
                                    : &ivi_mb_vlc_tabs [7];
        return 0;
    }
238

239 240 241 242 243 244 245 246 247 248 249 250 251
    huff_tab->tab_sel = get_bits(gb, 3);
    if (huff_tab->tab_sel == 7) {
        /* custom huffman table (explicitly encoded) */
        new_huff.num_rows = get_bits(gb, 4);
        if (!new_huff.num_rows) {
            av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
            return AVERROR_INVALIDDATA;
        }

        for (i = 0; i < new_huff.num_rows; i++)
            new_huff.xbits[i] = get_bits(gb, 4);

        /* 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) {
253 254 255 256 257 258 259 260 261 262 263 264
            ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);

            if (huff_tab->cust_tab.table)
                ff_free_vlc(&huff_tab->cust_tab);
            result = ivi_create_huff_from_desc(&huff_tab->cust_desc,
                    &huff_tab->cust_tab, 0);
            if (result) {
                // reset faulty description
                huff_tab->cust_desc.num_rows = 0;
                av_log(avctx, AV_LOG_ERROR,
                       "Error while initializing custom vlc table!\n");
                return result;
265 266
            }
        }
267 268 269 270 271
        huff_tab->tab = &huff_tab->cust_tab;
    } else {
        /* select one of predefined tables */
        huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[huff_tab->tab_sel]
            : &ivi_mb_vlc_tabs [huff_tab->tab_sel];
272 273
    }

274
    return 0;
275 276
}

277 278 279 280 281 282
/*
 *  Free planes, bands and macroblocks buffers.
 *
 *  @param[in]  planes  pointer to the array of the plane descriptors
 */
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)
288 289 290 291
        for (b = 0; b < planes[p].num_bands; b++) {
            av_freep(&planes[p].bands[b].bufs[0]);
            av_freep(&planes[p].bands[b].bufs[1]);
            av_freep(&planes[p].bands[b].bufs[2]);
292
            av_freep(&planes[p].bands[b].bufs[3]);
293 294 295 296 297 298 299 300

            if (planes[p].bands[b].blk_vlc.cust_tab.table)
                ff_free_vlc(&planes[p].bands[b].blk_vlc.cust_tab);
            for (t = 0; t < planes[p].bands[b].num_tiles; t++)
                av_freep(&planes[p].bands[b].tiles[t].mbs);
            av_freep(&planes[p].bands[b].tiles);
        }
        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
{
308 309 310
    int p, b;
    uint32_t b_width, b_height, align_fac, width_aligned,
             height_aligned, buf_size;
311 312
    IVIBandDesc *band;

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 ||
316 317 318
        cfg->luma_bands < 1 || cfg->chroma_bands < 1)
        return AVERROR_INVALIDDATA;

319 320 321 322 323 324 325 326 327 328 329
    /* fill in the descriptor of the luminance plane */
    planes[0].width     = cfg->pic_width;
    planes[0].height    = cfg->pic_height;
    planes[0].num_bands = cfg->luma_bands;

    /* fill in the descriptors of the chrominance planes */
    planes[1].width     = planes[2].width     = (cfg->pic_width  + 3) >> 2;
    planes[1].height    = planes[2].height    = (cfg->pic_height + 3) >> 2;
    planes[1].num_bands = planes[2].num_bands = cfg->chroma_bands;

    for (p = 0; p < 3; p++) {
330
        planes[p].bands = av_mallocz_array(planes[p].num_bands, sizeof(IVIBandDesc));
331 332 333 334 335 336
        if (!planes[p].bands)
            return AVERROR(ENOMEM);

        /* select band dimensions: if there is only one band then it
         *  has the full size, if there are several bands each of them
         *  has only half size */
337 338 339 340
        b_width  = planes[p].num_bands == 1 ? planes[p].width
                                            : (planes[p].width  + 1) >> 1;
        b_height = planes[p].num_bands == 1 ? planes[p].height
                                            : (planes[p].height + 1) >> 1;
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355

        /* luma   band buffers will be aligned on 16x16 (max macroblock size) */
        /* chroma band buffers will be aligned on   8x8 (max macroblock size) */
        align_fac       = p ? 8 : 16;
        width_aligned   = FFALIGN(b_width , align_fac);
        height_aligned  = FFALIGN(b_height, align_fac);
        buf_size        = width_aligned * height_aligned * sizeof(int16_t);

        for (b = 0; b < planes[p].num_bands; b++) {
            band = &planes[p].bands[b]; /* select appropriate plane/band */
            band->plane    = p;
            band->band_num = b;
            band->width    = b_width;
            band->height   = b_height;
            band->pitch    = width_aligned;
356
            band->aheight  = height_aligned;
357 358
            band->bufs[0]  = av_mallocz(buf_size);
            band->bufs[1]  = av_mallocz(buf_size);
359
            band->bufsize  = buf_size/2;
360 361 362 363 364
            if (!band->bufs[0] || !band->bufs[1])
                return AVERROR(ENOMEM);

            /* allocate the 3rd band buffer for scalability mode */
            if (cfg->luma_bands > 1) {
365
                band->bufs[2] = av_mallocz(buf_size);
366 367 368
                if (!band->bufs[2])
                    return AVERROR(ENOMEM);
            }
369 370 371 372 373
            if (is_indeo4) {
                band->bufs[3]  = av_mallocz(buf_size);
                if (!band->bufs[3])
                    return AVERROR(ENOMEM);
            }
374 375
            /* reset custom vlc */
            planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0;
376 377 378 379 380 381
        }
    }

    return 0;
}

382 383
static int ivi_init_tiles(IVIBandDesc *band, IVITile *ref_tile,
                          int p, int b, int t_height, int t_width)
384
{
385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400
    int x, y;
    IVITile *tile = band->tiles;

    for (y = 0; y < band->height; y += t_height) {
        for (x = 0; x < band->width; x += t_width) {
            tile->xpos     = x;
            tile->ypos     = y;
            tile->mb_size  = band->mb_size;
            tile->width    = FFMIN(band->width - x,  t_width);
            tile->height   = FFMIN(band->height - y, t_height);
            tile->is_empty = tile->data_size = 0;
            /* calculate number of macroblocks */
            tile->num_MBs  = IVI_MBs_PER_TILE(tile->width, tile->height,
                                              band->mb_size);

            av_freep(&tile->mbs);
401
            tile->mbs = av_mallocz_array(tile->num_MBs, sizeof(IVIMbInfo));
402 403 404 405 406
            if (!tile->mbs)
                return AVERROR(ENOMEM);

            tile->ref_mbs = 0;
            if (p || b) {
407 408
                if (tile->num_MBs != ref_tile->num_MBs) {
                    av_log(NULL, AV_LOG_DEBUG, "ref_tile mismatch\n");
409
                    return AVERROR_INVALIDDATA;
410
                }
411 412 413 414 415 416 417 418 419 420 421 422 423 424
                tile->ref_mbs = ref_tile->mbs;
                ref_tile++;
            }
            tile++;
        }
    }

    return 0;
}

av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes,
                              int tile_width, int tile_height)
{
    int p, b, x_tiles, y_tiles, t_width, t_height, ret;
425 426 427 428 429 430
    IVIBandDesc *band;

    for (p = 0; p < 3; p++) {
        t_width  = !p ? tile_width  : (tile_width  + 3) >> 2;
        t_height = !p ? tile_height : (tile_height + 3) >> 2;

431 432 433 434
        if (!p && planes[0].num_bands == 4) {
            t_width  >>= 1;
            t_height >>= 1;
        }
435 436
        if(t_width<=0 || t_height<=0)
            return AVERROR(EINVAL);
437

438 439 440 441 442 443 444
        for (b = 0; b < planes[p].num_bands; b++) {
            band = &planes[p].bands[b];
            x_tiles = IVI_NUM_TILES(band->width, t_width);
            y_tiles = IVI_NUM_TILES(band->height, t_height);
            band->num_tiles = x_tiles * y_tiles;

            av_freep(&band->tiles);
445
            band->tiles = av_mallocz_array(band->num_tiles, sizeof(IVITile));
446 447 448 449 450
            if (!band->tiles)
                return AVERROR(ENOMEM);

            /* use the first luma band as reference for motion vectors
             * and quant */
451 452 453 454 455 456
            ret = ivi_init_tiles(band, planes[0].bands[0].tiles,
                                 p, b, t_height, t_width);
            if (ret < 0)
                return ret;
        }
    }
457 458 459 460

    return 0;
}

461 462 463 464 465 466 467 468 469 470 471
/*
 *  Decode size of the tile data.
 *  The size is stored as a variable-length field having the following format:
 *  if (tile_data_size < 255) than this field is only one byte long
 *  if (tile_data_size >= 255) than this field four is byte long: 0xFF X1 X2 X3
 *  where X1-X3 is size of the tile data
 *
 *  @param[in,out]  gb  the GetBit context
 *  @return     size of the tile data in bytes
 */
static int ivi_dec_tile_data_size(GetBitContext *gb)
472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487
{
    int    len;

    len = 0;
    if (get_bits1(gb)) {
        len = get_bits(gb, 8);
        if (len == 255)
            len = get_bits_long(gb, 24);
    }

    /* align the bitstream reader on the byte boundary */
    align_get_bits(gb);

    return len;
}

488 489 490 491 492 493 494 495 496 497 498 499 500 501
static int ivi_dc_transform(IVIBandDesc *band, int *prev_dc, int buf_offs,
                            int blk_size)
{
    int buf_size = band->pitch * band->aheight - buf_offs;
    int min_size = (blk_size - 1) * band->pitch + blk_size;

    if (min_size > buf_size)
        return AVERROR_INVALIDDATA;

    band->dc_transform(prev_dc, band->buf + buf_offs,
                       band->pitch, blk_size);

    return 0;
}
502 503

static int ivi_decode_coded_blocks(GetBitContext *gb, IVIBandDesc *band,
504 505 506 507 508
                                   ivi_mc_func mc, ivi_mc_avg_func mc_avg,
                                   int mv_x, int mv_y,
                                   int mv_x2, int mv_y2,
                                   int *prev_dc, int is_intra,
                                   int mc_type, int mc_type2,
509 510 511 512 513 514 515 516 517 518 519 520 521
                                   uint32_t quant, int offs,
                                   AVCodecContext *avctx)
{
    const uint16_t *base_tab  = is_intra ? band->intra_base : band->inter_base;
    RVMapDesc *rvmap = band->rv_map;
    uint8_t col_flags[8];
    int32_t trvec[64];
    uint32_t sym = 0, lo, hi, q;
    int pos, run, val;
    int blk_size   = band->blk_size;
    int num_coeffs = blk_size * blk_size;
    int col_mask   = blk_size - 1;
    int scan_pos   = -1;
522 523 524 525 526 527
    int min_size   = band->pitch * (band->transform_size - 1) +
                     band->transform_size;
    int buf_size   = band->pitch * band->aheight - offs;

    if (min_size > buf_size)
        return AVERROR_INVALIDDATA;
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552

    if (!band->scan) {
        av_log(avctx, AV_LOG_ERROR, "Scan pattern is not set.\n");
        return AVERROR_INVALIDDATA;
    }

    /* zero transform vector */
    memset(trvec, 0, num_coeffs * sizeof(trvec[0]));
    /* zero column flags */
    memset(col_flags, 0, sizeof(col_flags));
    while (scan_pos <= num_coeffs) {
        sym = get_vlc2(gb, band->blk_vlc.tab->table,
                       IVI_VLC_BITS, 1);
        if (sym == rvmap->eob_sym)
            break; /* End of block */

        /* Escape - run/val explicitly coded using 3 vlc codes */
        if (sym == rvmap->esc_sym) {
            run = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1) + 1;
            lo  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
            hi  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
            /* merge them and convert into signed val */
            val = IVI_TOSIGNED((hi << 6) | lo);
        } else {
            if (sym >= 256U) {
553
                av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %"PRIu32".\n", sym);
554 555 556 557 558 559 560 561
                return AVERROR_INVALIDDATA;
            }
            run = rvmap->runtab[sym];
            val = rvmap->valtab[sym];
        }

        /* de-zigzag and dequantize */
        scan_pos += run;
562
        if (scan_pos >= num_coeffs || scan_pos < 0)
563 564 565 566
            break;
        pos = band->scan[scan_pos];

        if (!val)
567
            ff_dlog(avctx, "Val = 0 encountered!\n");
568 569 570 571 572 573 574 575 576

        q = (base_tab[pos] * quant) >> 9;
        if (q > 1)
            val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
        trvec[pos] = val;
        /* track columns containing non-zero coeffs */
        col_flags[pos & col_mask] |= !!val;
    }

577
    if (scan_pos < 0 || scan_pos >= num_coeffs && sym != rvmap->eob_sym)
578 579 580 581 582 583 584 585 586
        return AVERROR_INVALIDDATA; /* corrupt block data */

    /* undoing DC coeff prediction for intra-blocks */
    if (is_intra && band->is_2d_trans) {
        *prev_dc     += trvec[0];
        trvec[0]      = *prev_dc;
        col_flags[0] |= !!*prev_dc;
    }

587 588 589 590 591
    if(band->transform_size > band->blk_size){
        av_log(NULL, AV_LOG_ERROR, "Too large transform\n");
        return AVERROR_INVALIDDATA;
    }

592 593 594 595 596 597
    /* apply inverse transform */
    band->inv_transform(trvec, band->buf + offs,
                        band->pitch, col_flags);

    /* apply motion compensation */
    if (!is_intra)
598 599
        return ivi_mc(band, mc, mc_avg, offs, mv_x, mv_y, mv_x2, mv_y2,
                      mc_type, mc_type2);
600 601 602

    return 0;
}
603 604 605 606 607 608 609 610 611 612 613
/*
 *  Decode block data:
 *  extract huffman-coded transform coefficients from the bitstream,
 *  dequantize them, apply inverse transform and motion compensation
 *  in order to reconstruct the picture.
 *
 *  @param[in,out]  gb    the GetBit context
 *  @param[in]      band  pointer to the band descriptor
 *  @param[in]      tile  pointer to the tile descriptor
 *  @return     result code: 0 - OK, -1 = error (corrupted blocks data)
 */
614 615
static int ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band,
                             IVITile *tile, AVCodecContext *avctx)
616
{
617 618 619
    int mbn, blk, num_blocks, blk_size, ret, is_intra;
    int mc_type = 0, mc_type2 = -1;
    int mv_x = 0, mv_y = 0, mv_x2 = 0, mv_y2 = 0;
620 621 622
    int32_t prev_dc;
    uint32_t cbp, quant, buf_offs;
    IVIMbInfo *mb;
623
    ivi_mc_func mc_with_delta_func, mc_no_delta_func;
624
    ivi_mc_avg_func mc_avg_with_delta_func, mc_avg_no_delta_func;
625
    const uint8_t *scale_tab;
626

627 628
    /* init intra prediction for the DC coefficient */
    prev_dc    = 0;
629
    blk_size   = band->blk_size;
630 631
    /* number of blocks per mb */
    num_blocks = (band->mb_size != blk_size) ? 4 : 1;
632
    if (blk_size == 8) {
633 634 635 636
        mc_with_delta_func     = ff_ivi_mc_8x8_delta;
        mc_no_delta_func       = ff_ivi_mc_8x8_no_delta;
        mc_avg_with_delta_func = ff_ivi_mc_avg_8x8_delta;
        mc_avg_no_delta_func   = ff_ivi_mc_avg_8x8_no_delta;
637
    } else {
638 639 640 641
        mc_with_delta_func     = ff_ivi_mc_4x4_delta;
        mc_no_delta_func       = ff_ivi_mc_4x4_no_delta;
        mc_avg_with_delta_func = ff_ivi_mc_avg_4x4_delta;
        mc_avg_no_delta_func   = ff_ivi_mc_avg_4x4_no_delta;
642 643 644 645 646 647 648
    }

    for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {
        is_intra = !mb->type;
        cbp      = mb->cbp;
        buf_offs = mb->buf_offs;

649 650
        quant = band->glob_quant + mb->q_delta;
        if (avctx->codec_id == AV_CODEC_ID_INDEO4)
651
            quant = av_clip_uintp2(quant, 5);
652 653
        else
            quant = av_clip(quant, 0, 23);
654 655

        scale_tab = is_intra ? band->intra_scale : band->inter_scale;
656 657
        if (scale_tab)
            quant = scale_tab[quant];
658 659

        if (!is_intra) {
660 661 662 663
            mv_x  = mb->mv_x;
            mv_y  = mb->mv_y;
            mv_x2 = mb->b_mv_x;
            mv_y2 = mb->b_mv_y;
664
            if (band->is_halfpel) {
665 666 667 668 669 670
                mc_type  = ((mv_y  & 1) << 1) | (mv_x  & 1);
                mc_type2 = ((mv_y2 & 1) << 1) | (mv_x2 & 1);
                mv_x  >>= 1;
                mv_y  >>= 1;
                mv_x2 >>= 1;
                mv_y2 >>= 1; /* convert halfpel vectors into fullpel ones */
671
            }
672 673 674 675
            if (mb->type == 2)
                mc_type = -1;
            if (mb->type != 2 && mb->type != 3)
                mc_type2 = -1;
676 677 678 679 680 681 682 683
            if (mb->type) {
                int dmv_x, dmv_y, cx, cy;

                dmv_x = mb->mv_x >> band->is_halfpel;
                dmv_y = mb->mv_y >> band->is_halfpel;
                cx    = mb->mv_x &  band->is_halfpel;
                cy    = mb->mv_y &  band->is_halfpel;

684 685 686 687 688 689 690 691 692 693 694 695 696 697 698
                if (mb->xpos + dmv_x < 0 ||
                    mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||
                    mb->ypos + dmv_y < 0 ||
                    mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
                    return AVERROR_INVALIDDATA;
                }
            }
            if (mb->type == 2 || mb->type == 3) {
                int dmv_x, dmv_y, cx, cy;

                dmv_x = mb->b_mv_x >> band->is_halfpel;
                dmv_y = mb->b_mv_y >> band->is_halfpel;
                cx    = mb->b_mv_x &  band->is_halfpel;
                cy    = mb->b_mv_y &  band->is_halfpel;

699 700 701 702
                if (mb->xpos + dmv_x < 0 ||
                    mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||
                    mb->ypos + dmv_y < 0 ||
                    mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
703 704 705
                    return AVERROR_INVALIDDATA;
                }
            }
706 707 708 709 710 711 712 713 714 715 716 717
        }

        for (blk = 0; blk < num_blocks; blk++) {
            /* adjust block position in the buffer according to its number */
            if (blk & 1) {
                buf_offs += blk_size;
            } else if (blk == 2) {
                buf_offs -= blk_size;
                buf_offs += blk_size * band->pitch;
            }

            if (cbp & 1) { /* block coded ? */
718
                ret = ivi_decode_coded_blocks(gb, band, mc_with_delta_func,
719 720 721 722 723
                                              mc_avg_with_delta_func,
                                              mv_x, mv_y, mv_x2, mv_y2,
                                              &prev_dc, is_intra,
                                              mc_type, mc_type2, quant,
                                              buf_offs, avctx);
724 725
                if (ret < 0)
                    return ret;
726 727 728 729
            } else {
                /* block not coded */
                /* for intra blocks apply the dc slant transform */
                /* for inter - perform the motion compensation without delta */
730
                if (is_intra) {
731 732 733
                    ret = ivi_dc_transform(band, &prev_dc, buf_offs, blk_size);
                    if (ret < 0)
                        return ret;
734
                } else {
735 736 737
                    ret = ivi_mc(band, mc_no_delta_func, mc_avg_no_delta_func,
                                 buf_offs, mv_x, mv_y, mv_x2, mv_y2,
                                 mc_type, mc_type2);
738 739 740
                    if (ret < 0)
                        return ret;
                }
741 742 743 744 745 746 747 748 749 750 751
            }

            cbp >>= 1;
        }// for blk
    }// for mbn

    align_get_bits(gb);

    return 0;
}

752 753 754 755 756 757 758 759 760
/**
 *  Handle empty tiles by performing data copying and motion
 *  compensation respectively.
 *
 *  @param[in]  avctx     ptr to the AVCodecContext
 *  @param[in]  band      pointer to the band descriptor
 *  @param[in]  tile      pointer to the tile descriptor
 *  @param[in]  mv_scale  scaling factor for motion vectors
 */
761 762
static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
                                  IVITile *tile, int32_t mv_scale)
763 764
{
    int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
765
    int             offs, mb_offset, row_offset, ret;
766 767 768
    IVIMbInfo       *mb, *ref_mb;
    const int16_t   *src;
    int16_t         *dst;
769
    ivi_mc_func     mc_no_delta_func;
770

771 772 773
    if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {
        av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches "
               "parameters %d in ivi_process_empty_tile()\n",
774
               tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
775
        return AVERROR_INVALIDDATA;
776 777
    }

778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803
    offs       = tile->ypos * band->pitch + tile->xpos;
    mb         = tile->mbs;
    ref_mb     = tile->ref_mbs;
    row_offset = band->mb_size * band->pitch;
    need_mc    = 0; /* reset the mc tracking flag */

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

        for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) {
            mb->xpos     = x;
            mb->ypos     = y;
            mb->buf_offs = mb_offset;

            mb->type = 1; /* set the macroblocks type = INTER */
            mb->cbp  = 0; /* all blocks are empty */

            if (!band->qdelta_present && !band->plane && !band->band_num) {
                mb->q_delta = band->glob_quant;
                mb->mv_x    = 0;
                mb->mv_y    = 0;
            }

            if (band->inherit_qdelta && ref_mb)
                mb->q_delta = ref_mb->q_delta;

804
            if (band->inherit_mv && ref_mb) {
805 806 807 808 809 810 811 812 813
                /* motion vector inheritance */
                if (mv_scale) {
                    mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
                    mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
                } else {
                    mb->mv_x = ref_mb->mv_x;
                    mb->mv_y = ref_mb->mv_y;
                }
                need_mc |= mb->mv_x || mb->mv_y; /* tracking non-zero motion vectors */
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829
                {
                    int dmv_x, dmv_y, cx, cy;

                    dmv_x = mb->mv_x >> band->is_halfpel;
                    dmv_y = mb->mv_y >> band->is_halfpel;
                    cx    = mb->mv_x &  band->is_halfpel;
                    cy    = mb->mv_y &  band->is_halfpel;

                    if (   mb->xpos + dmv_x < 0
                        || mb->xpos + dmv_x + band->mb_size + cx > band->pitch
                        || mb->ypos + dmv_y < 0
                        || mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
                        av_log(avctx, AV_LOG_ERROR, "MV out of bounds\n");
                        return AVERROR_INVALIDDATA;
                    }
                }
830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
            }

            mb++;
            if (ref_mb)
                ref_mb++;
            mb_offset += band->mb_size;
        } // for x
        offs += row_offset;
    } // for y

    if (band->inherit_mv && need_mc) { /* apply motion compensation if there is at least one non-zero motion vector */
        num_blocks = (band->mb_size != band->blk_size) ? 4 : 1; /* number of blocks per mb */
        mc_no_delta_func = (band->blk_size == 8) ? ff_ivi_mc_8x8_no_delta
                                                 : ff_ivi_mc_4x4_no_delta;

        for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {
            mv_x = mb->mv_x;
            mv_y = mb->mv_y;
            if (!band->is_halfpel) {
                mc_type = 0; /* we have only fullpel vectors */
            } else {
                mc_type = ((mv_y & 1) << 1) | (mv_x & 1);
                mv_x >>= 1;
                mv_y >>= 1; /* convert halfpel vectors into fullpel ones */
            }

            for (blk = 0; blk < num_blocks; blk++) {
                /* adjust block position in the buffer according with its number */
                offs = mb->buf_offs + band->blk_size * ((blk & 1) + !!(blk & 2) * band->pitch);
859 860
                ret = ivi_mc(band, mc_no_delta_func, 0, offs,
                             mv_x, mv_y, 0, 0, mc_type, -1);
861 862
                if (ret < 0)
                    return ret;
863 864 865 866 867 868 869 870 871 872 873 874
            }
        }
    } else {
        /* copy data from the reference tile into the current one */
        src = band->ref_buf + tile->ypos * band->pitch + tile->xpos;
        dst = band->buf     + tile->ypos * band->pitch + tile->xpos;
        for (y = 0; y < tile->height; y++) {
            memcpy(dst, src, tile->width*sizeof(band->buf[0]));
            src += band->pitch;
            dst += band->pitch;
        }
    }
875 876

    return 0;
877 878 879
}


880
#ifdef DEBUG
881
static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896
{
    int         x, y;
    int16_t     *src, checksum;

    src = band->buf;
    checksum = 0;

    for (y = 0; y < band->height; src += band->pitch, y++)
        for (x = 0; x < band->width; x++)
            checksum += src[x];

    return checksum;
}
#endif

897 898 899 900 901 902 903 904 905
/*
 *  Convert and output the current plane.
 *  This conversion is done by adding back the bias value of 128
 *  (subtracted in the encoder) and clipping the result.
 *
 *  @param[in]   plane      pointer to the descriptor of the plane being processed
 *  @param[out]  dst        pointer to the buffer receiving converted pixels
 *  @param[in]   dst_pitch  pitch for moving to the next y line
 */
906
static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, ptrdiff_t dst_pitch)
907 908 909
{
    int             x, y;
    const int16_t   *src  = plane->bands[0].buf;
910
    ptrdiff_t       pitch = plane->bands[0].pitch;
911

912
    if (!src)
913 914
        return;

915 916 917 918 919 920 921 922
    for (y = 0; y < plane->height; y++) {
        for (x = 0; x < plane->width; x++)
            dst[x] = av_clip_uint8(src[x] + 128);
        src += pitch;
        dst += dst_pitch;
    }
}

923 924 925 926 927 928 929 930
/**
 *  Decode an Indeo 4 or 5 band.
 *
 *  @param[in,out]  ctx    ptr to the decoder context
 *  @param[in,out]  band   ptr to the band descriptor
 *  @param[in]      avctx  ptr to the AVCodecContext
 *  @return         result code: 0 = OK, -1 = error
 */
931
static int decode_band(IVI45DecContext *ctx,
932 933 934 935 936 937
                       IVIBandDesc *band, AVCodecContext *avctx)
{
    int         result, i, t, idx1, idx2, pos;
    IVITile     *tile;

    band->buf     = band->bufs[ctx->dst_buf];
938 939 940 941
    if (!band->buf) {
        av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");
        return AVERROR_INVALIDDATA;
    }
942 943 944 945 946 947 948 949
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_BIDIR) {
        band->ref_buf   = band->bufs[ctx->b_ref_buf];
        band->b_ref_buf = band->bufs[ctx->ref_buf];
    } else {
        band->ref_buf   = band->bufs[ctx->ref_buf];
        band->b_ref_buf = 0;
    }
    band->data_ptr  = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970

    result = ctx->decode_band_hdr(ctx, band, avctx);
    if (result) {
        av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",
               result);
        return result;
    }

    if (band->is_empty) {
        av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
        return AVERROR_INVALIDDATA;
    }

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

    /* apply corrections to the selected rvmap table if present */
    for (i = 0; i < band->num_corr; i++) {
        idx1 = band->corr[i * 2];
        idx2 = band->corr[i * 2 + 1];
        FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
        FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
971 972 973 974
        if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
            band->rv_map->eob_sym ^= idx1 ^ idx2;
        if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
            band->rv_map->esc_sym ^= idx1 ^ idx2;
975 976 977 978 979 980 981
    }

    pos = get_bits_count(&ctx->gb);

    for (t = 0; t < band->num_tiles; t++) {
        tile = &band->tiles[t];

982 983 984 985 986
        if (tile->mb_size != band->mb_size) {
            av_log(avctx, AV_LOG_ERROR, "MB sizes mismatch: %d vs. %d\n",
                   band->mb_size, tile->mb_size);
            return AVERROR_INVALIDDATA;
        }
987 988
        tile->is_empty = get_bits1(&ctx->gb);
        if (tile->is_empty) {
989
            result = ivi_process_empty_tile(avctx, band, tile,
990
                                      (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
991 992
            if (result < 0)
                break;
993
            ff_dlog(avctx, "Empty tile encountered!\n");
994
        } else {
995
            tile->data_size = ivi_dec_tile_data_size(&ctx->gb);
996 997
            if (!tile->data_size) {
                av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
998 999
                result = AVERROR_INVALIDDATA;
                break;
1000 1001 1002 1003 1004 1005
            }

            result = ctx->decode_mb_info(ctx, band, tile, avctx);
            if (result < 0)
                break;

1006
            result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);
1007 1008 1009 1010 1011 1012 1013 1014 1015 1016
            if (result < 0) {
                av_log(avctx, AV_LOG_ERROR,
                       "Corrupted tile data encountered!\n");
                break;
            }

            if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {
                av_log(avctx, AV_LOG_ERROR,
                       "Tile data_size mismatch!\n");
                result = AVERROR_INVALIDDATA;
1017 1018 1019 1020 1021 1022 1023
                break;
            }

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

1024 1025
    /* restore the selected rvmap table by applying its corrections in
     * reverse order */
1026 1027 1028 1029 1030
    for (i = band->num_corr-1; i >= 0; i--) {
        idx1 = band->corr[i*2];
        idx2 = band->corr[i*2+1];
        FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
        FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
1031 1032 1033 1034
        if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
            band->rv_map->eob_sym ^= idx1 ^ idx2;
        if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
            band->rv_map->esc_sym ^= idx1 ^ idx2;
1035 1036 1037 1038 1039 1040 1041
    }

#ifdef DEBUG
    if (band->checksum_present) {
        uint16_t chksum = ivi_calc_band_checksum(band);
        if (chksum != band->checksum) {
            av_log(avctx, AV_LOG_ERROR,
1042
                   "Band checksum mismatch! Plane %d, band %d, "
1043
                   "received: %"PRIx32", calculated: %"PRIx16"\n",
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
                   band->plane, band->band_num, band->checksum, chksum);
        }
    }
#endif

    align_get_bits(&ctx->gb);

    return result;
}

1054
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
1055 1056 1057 1058
                        AVPacket *avpkt)
{
    IVI45DecContext *ctx = avctx->priv_data;
    const uint8_t   *buf = avpkt->data;
1059
    AVFrame       *frame = data;
1060 1061 1062
    int             buf_size = avpkt->size;
    int             result, p, b;

1063 1064 1065
    result = init_get_bits8(&ctx->gb, buf, buf_size);
    if (result < 0)
        return result;
1066 1067 1068 1069 1070 1071 1072
    ctx->frame_data = buf;
    ctx->frame_size = buf_size;

    result = ctx->decode_pic_hdr(ctx, avctx);
    if (result) {
        av_log(avctx, AV_LOG_ERROR,
               "Error while decoding picture header: %d\n", result);
1073
        return result;
1074
    }
1075 1076
    if (ctx->gop_invalid)
        return AVERROR_INVALIDDATA;
1077

1078
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_NULL_LAST) {
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
        if (ctx->got_p_frame) {
            av_frame_move_ref(data, ctx->p_frame);
            *got_frame = 1;
            ctx->got_p_frame = 0;
        } else {
            *got_frame = 0;
        }
        return buf_size;
    }

1089
    if (ctx->gop_flags & IVI5_IS_PROTECTED) {
1090
        avpriv_report_missing_feature(avctx, "Password-protected clip");
1091
        return AVERROR_PATCHWELCOME;
1092 1093
    }

1094 1095 1096 1097 1098
    if (!ctx->planes[0].bands) {
        av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");
        return AVERROR_INVALIDDATA;
    }

1099 1100 1101 1102 1103
    ctx->switch_buffers(ctx);

    //{ START_TIMER;

    if (ctx->is_nonnull_frame(ctx)) {
1104
        ctx->buf_invalid[ctx->dst_buf] = 1;
1105 1106
        for (p = 0; p < 3; p++) {
            for (b = 0; b < ctx->planes[p].num_bands; b++) {
1107
                result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);
1108
                if (result < 0) {
1109 1110
                    av_log(avctx, AV_LOG_ERROR,
                           "Error while decoding band: %d, plane: %d\n", b, p);
1111
                    return result;
1112 1113 1114
                }
            }
        }
1115
        ctx->buf_invalid[ctx->dst_buf] = 0;
1116 1117 1118 1119 1120 1121 1122 1123
    } else {
        if (ctx->is_scalable)
            return AVERROR_INVALIDDATA;

        for (p = 0; p < 3; p++) {
            if (!ctx->planes[p].bands[0].buf)
                return AVERROR_INVALIDDATA;
        }
1124
    }
1125 1126
    if (ctx->buf_invalid[ctx->dst_buf])
        return -1;
1127 1128 1129

    //STOP_TIMER("decode_planes"); }

1130
    if (!ctx->is_nonnull_frame(ctx))
1131 1132
        return buf_size;

1133 1134 1135 1136
    result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);
    if (result < 0)
        return result;

1137
    if ((result = ff_get_buffer(avctx, frame, 0)) < 0)
1138 1139 1140
        return result;

    if (ctx->is_scalable) {
1141
        if (ctx->is_indeo4)
1142
            ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1143
        else
1144
            ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);
1145
    } else {
1146
        ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1147 1148
    }

1149 1150
    ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);
    ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);
1151

1152
    *got_frame = 1;
1153

1154 1155 1156 1157 1158
    /* If the bidirectional mode is enabled, next I and the following P
     * frame will be sent together. Unfortunately the approach below seems
     * to be the only way to handle the B-frames mode.
     * That's exactly the same Intel decoders do.
     */
1159
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177
        int left;

            // skip version string
        while (get_bits(&ctx->gb, 8)) {
            if (get_bits_left(&ctx->gb) < 8)
                return AVERROR_INVALIDDATA;
        }
        left = get_bits_count(&ctx->gb) & 0x18;
        skip_bits_long(&ctx->gb, 64 - left);
        if (get_bits_left(&ctx->gb) > 18 &&
            show_bits_long(&ctx->gb, 21) == 0xBFFF8) { // syncheader + inter type
            AVPacket pkt;
            pkt.data = avpkt->data + (get_bits_count(&ctx->gb) >> 3);
            pkt.size = get_bits_left(&ctx->gb) >> 3;
            ff_ivi_decode_frame(avctx, ctx->p_frame, &ctx->got_p_frame, &pkt);
        }
    }

1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
    if (ctx->show_indeo4_info) {
        if (ctx->is_scalable)
            av_log(avctx, AV_LOG_DEBUG, "This video uses scalability mode\n");
        if (ctx->uses_tiling)
            av_log(avctx, AV_LOG_DEBUG, "This video uses local decoding\n");
        if (ctx->has_b_frames)
            av_log(avctx, AV_LOG_DEBUG, "This video contains B-frames\n");
        if (ctx->has_transp)
            av_log(avctx, AV_LOG_DEBUG, "Transparency mode is enabled\n");
        if (ctx->uses_haar)
            av_log(avctx, AV_LOG_DEBUG, "This video uses Haar transform\n");
        if (ctx->uses_fullpel)
            av_log(avctx, AV_LOG_DEBUG, "This video uses fullpel motion vectors\n");
        ctx->show_indeo4_info = 0;
    }

1194 1195 1196 1197 1198 1199 1200 1201 1202 1203
    return buf_size;
}

/**
 *  Close Indeo5 decoder and clean up its context.
 */
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
{
    IVI45DecContext *ctx = avctx->priv_data;

1204
    ivi_free_buffers(&ctx->planes[0]);
1205 1206 1207 1208

    if (ctx->mb_vlc.cust_tab.table)
        ff_free_vlc(&ctx->mb_vlc.cust_tab);

1209 1210 1211
    if (ctx->blk_vlc.cust_tab.table)
        ff_free_vlc(&ctx->blk_vlc.cust_tab);

1212 1213
    av_frame_free(&ctx->p_frame);

1214 1215 1216
    return 0;
}

1217

1218 1219 1220
/**
 *  Scan patterns shared between indeo4 and indeo5
 */
1221
const uint8_t ff_ivi_vertical_scan_8x8[64] = {
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231
    0,  8, 16, 24, 32, 40, 48, 56,
    1,  9, 17, 25, 33, 41, 49, 57,
    2, 10, 18, 26, 34, 42, 50, 58,
    3, 11, 19, 27, 35, 43, 51, 59,
    4, 12, 20, 28, 36, 44, 52, 60,
    5, 13, 21, 29, 37, 45, 53, 61,
    6, 14, 22, 30, 38, 46, 54, 62,
    7, 15, 23, 31, 39, 47, 55, 63
};

1232
const uint8_t ff_ivi_horizontal_scan_8x8[64] = {
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
     0,  1,  2,  3,  4,  5,  6,  7,
     8,  9, 10, 11, 12, 13, 14, 15,
    16, 17, 18, 19, 20, 21, 22, 23,
    24, 25, 26, 27, 28, 29, 30, 31,
    32, 33, 34, 35, 36, 37, 38, 39,
    40, 41, 42, 43, 44, 45, 46, 47,
    48, 49, 50, 51, 52, 53, 54, 55,
    56, 57, 58, 59, 60, 61, 62, 63
};

1243
const uint8_t ff_ivi_direct_scan_4x4[16] = {
1244 1245 1246 1247
    0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
};


1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603
/**
 *  Run-value (RLE) tables.
 */
const RVMapDesc ff_ivi_rvmap_tabs[9] = {
{   /* MapTab0 */
    5, /* eob_sym */
    2, /* esc_sym */
    /* run table */
    {1,  1,  0,  1,  1,  0,  1,  1,  2,  2,  1,  1,  1,  1,  3,  3,
     1,  1,  2,  2,  1,  1,  4,  4,  1,  1,  1,  1,  2,  2,  5,  5,
     1,  1,  3,  3,  1,  1,  6,  6,  1,  2,  1,  2,  7,  7,  1,  1,
     8,  8,  1,  1,  4,  2,  1,  4,  2,  1,  3,  3,  1,  1,  1,  9,
     9,  1,  2,  1,  2,  1,  5,  5,  1,  1, 10, 10,  1,  1,  3,  3,
     2,  2,  1,  1, 11, 11,  6,  4,  4,  1,  6,  1,  2,  1,  2, 12,
     8,  1, 12,  7,  8,  7,  1, 16,  1, 16,  1,  3,  3, 13,  1, 13,
     2,  2,  1, 15,  1,  5, 14, 15,  1,  5, 14,  1, 17,  8, 17,  8,
     1,  4,  4,  2,  2,  1, 25, 25, 24, 24,  1,  3,  1,  3,  1,  8,
     6,  7,  6,  1, 18,  8, 18,  1,  7, 23,  2,  2, 23,  1,  1, 21,
    22,  9,  9, 22, 19,  1, 21,  5, 19,  5,  1, 33, 20, 33, 20,  8,
     4,  4,  1, 32,  2,  2,  8,  3, 32, 26,  3,  1,  7,  7, 26,  6,
     1,  6,  1,  1, 16,  1, 10,  1, 10,  2, 16, 29, 28,  2, 29, 28,
     1, 27,  5,  8,  5, 27,  1,  8,  3,  7,  3, 31, 41, 31,  1, 41,
     6,  1,  6,  7,  4,  4,  1,  1,  2,  1,  2, 11, 34, 30, 11,  1,
    30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},

    /* value table */
    { 1,  -1,   0,   2,  -2,   0,   3,  -3,   1,  -1,   4,  -4,   5,  -5,   1,  -1,
      6,  -6,   2,  -2,   7,  -7,   1,  -1,   8,  -8,   9,  -9,   3,  -3,   1,  -1,
     10, -10,   2,  -2,  11, -11,   1,  -1,  12,   4, -12,  -4,   1,  -1,  13, -13,
      1,  -1,  14, -14,   2,   5,  15,  -2,  -5, -15,  -3,   3,  16, -16,  17,   1,
     -1, -17,   6,  18,  -6, -18,   2,  -2,  19, -19,   1,  -1,  20, -20,   4,  -4,
      7,  -7,  21, -21,   1,  -1,   2,   3,  -3,  22,  -2, -22,   8,  23,  -8,   1,
      2, -23,  -1,   2,  -2,  -2,  24,   1, -24,  -1,  25,   5,  -5,   1, -25,  -1,
      9,  -9,  26,   1, -26,   3,   1,  -1,  27,  -3,  -1, -27,   1,   3,  -1,  -3,
     28,  -4,   4,  10, -10, -28,   1,  -1,   1,  -1,  29,   6, -29,  -6,  30,  -4,
      3,   3,  -3, -30,   1,   4,  -1,  31,  -3,   1,  11, -11,  -1, -31,  32,  -1,
     -1,   2,  -2,   1,   1, -32,   1,   4,  -1,  -4,  33,  -1,   1,   1,  -1,   5,
      5,  -5, -33,  -1, -12,  12,  -5,  -7,   1,   1,   7,  34,   4,  -4,  -1,   4,
    -34,  -4,  35,  36,  -2, -35,  -2, -36,   2,  13,   2,  -1,   1, -13,   1,  -1,
     37,   1,  -5,   6,   5,  -1,  38,  -6,  -8,   5,   8,  -1,   1,   1, -37,  -1,
      5,  39,  -5,  -5,   6,  -6, -38, -39, -14,  40,  14,   2,   1,   1,  -2, -40,
     -1,  -2,   2,  -1,  -1,  -1,   1,   1,   1,  -1,   1,  -1,   1,  -1,   1,  -1}
},{
    /* MapTab1 */
    0,  /* eob_sym */
    38, /* esc_sym */
    /* run table */
    {0,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  8,  6,  8,  7,
     7,  9,  9, 10, 10, 11, 11,  1, 12,  1, 12, 13, 13, 16, 14, 16,
    14, 15, 15, 17, 17, 18,  0, 18, 19, 20, 21, 19, 22, 21, 20, 22,
    25, 24,  2, 25, 24, 23, 23,  2, 26, 28, 26, 28, 29, 27, 29, 27,
    33, 33,  1, 32,  1,  3, 32, 30, 36,  3, 36, 30, 31, 31, 35, 34,
    37, 41, 34, 35, 37,  4, 41,  4, 49,  8,  8, 49, 40, 38,  5, 38,
    40, 39,  5, 39, 42, 43, 42,  7, 57,  6, 43, 44,  6, 50,  7, 44,
    57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58,  1, 51, 58,  1,
    52, 59, 53,  9, 52, 55, 55, 59, 53, 56, 54, 56, 54,  9, 64, 64,
    60, 63, 60, 63, 61, 62, 61, 62,  2, 10,  2, 10, 11,  1, 11, 13,
    12,  1, 12, 13, 16, 16,  8,  8, 14,  3,  3, 15, 14, 15,  4,  4,
     1, 17, 17,  5,  1,  7,  7,  5,  6,  1,  2,  2,  6, 22,  1, 25,
    21, 22,  8, 24,  1, 21, 25, 24,  8, 18, 18, 23,  9, 20, 23, 33,
    29, 33, 20,  1, 19,  1, 29, 36,  9, 36, 19, 41, 28, 57, 32,  3,
    28,  3,  1, 27, 49, 49,  1, 32, 26, 26,  2,  4,  4,  7, 57, 41,
     2,  7, 10,  5, 37, 16, 10, 27,  8,  8, 13, 16, 37, 13,  1,  5},

    /* value table */
    {0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   1,   1,  -1,  -1,   1,
    -1,   1,  -1,   1,  -1,   1,  -1,   2,   1,  -2,  -1,   1,  -1,   1,   1,  -1,
    -1,   1,  -1,   1,  -1,   1,   0,  -1,   1,   1,   1,  -1,   1,  -1,  -1,  -1,
     1,   1,   2,  -1,  -1,   1,  -1,  -2,   1,   1,  -1,  -1,   1,   1,  -1,  -1,
     1,  -1,   3,   1,  -3,   2,  -1,   1,   1,  -2,  -1,  -1,  -1,   1,   1,   1,
     1,   1,  -1,  -1,  -1,   2,  -1,  -2,   1,   2,  -2,  -1,   1,   1,   2,  -1,
    -1,   1,  -2,  -1,   1,   1,  -1,   2,   1,   2,  -1,   1,  -2,  -1,  -2,  -1,
    -1,   1,   1,  -1,   1,  -1,   1,   1,   1,  -1,  -1,   1,   4,  -1,  -1,  -4,
     1,   1,   1,   2,  -1,  -1,   1,  -1,  -1,   1,  -1,  -1,   1,  -2,   1,  -1,
     1,   1,  -1,  -1,   1,   1,  -1,  -1,   3,   2,  -3,  -2,   2,   5,  -2,   2,
     2,  -5,  -2,  -2,  -2,   2,  -3,   3,   2,   3,  -3,   2,  -2,  -2,   3,  -3,
     6,   2,  -2,   3,  -6,   3,  -3,  -3,   3,   7,  -4,   4,  -3,   2,  -7,   2,
     2,  -2,  -4,   2,   8,  -2,  -2,  -2,   4,   2,  -2,   2,   3,   2,  -2,  -2,
     2,   2,  -2,  -8,  -2,   9,  -2,   2,  -3,  -2,   2,  -2,   2,   2,   2,   4,
    -2,  -4,  10,   2,   2,  -2,  -9,  -2,   2,  -2,   5,   4,  -4,   4,  -2,   2,
    -5,  -4,  -3,   4,   2,  -3,   3,  -2,  -5,   5,   3,   3,  -2,  -3, -10,  -4}
},{
    /* MapTab2 */
    2,  /* eob_sym */
    11, /* esc_sym */
    /* run table */
    {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  0,  1,  1,  5,  5,
     2,  2,  6,  6,  7,  7,  1,  8,  1,  8,  3,  3,  9,  9,  1,  2,
     2,  1,  4, 10,  4, 10, 11, 11,  1,  5, 12, 12,  1,  5, 13, 13,
     3,  3,  6,  6,  2,  2, 14, 14, 16, 16, 15,  7, 15,  8,  8,  7,
     1,  1, 17, 17,  4,  4,  1,  1, 18, 18,  2,  2,  5,  5, 25,  3,
     9,  3, 25,  9, 19, 24, 19, 24,  1, 21, 20,  1, 21, 22, 20, 22,
    23, 23,  8,  6, 33,  6,  8, 33,  7,  7, 26, 26,  1, 32,  1, 32,
    28,  4, 28, 10, 29, 27, 27, 10, 41,  4, 29,  2,  2, 41, 36, 31,
    49, 31, 34, 30, 34, 36, 30, 35,  1, 49, 11,  5, 35, 11,  1,  3,
     3,  5, 37, 37,  8, 40,  8, 40, 12, 12, 42, 42,  1, 38, 16, 57,
     1,  6, 16, 39, 38,  6,  7,  7, 13, 13, 39, 43,  2, 43, 57,  2,
    50,  9, 44,  9, 50,  4, 15, 48, 44,  4,  1, 15, 48, 14, 14,  1,
    45, 45,  8,  3,  5,  8, 51, 47,  3, 46, 46, 47,  5, 51,  1, 17,
    17, 58,  1, 58,  2, 52, 52,  2, 53,  7, 59,  6,  6, 56, 53, 55,
     7, 55,  1, 54, 59, 56, 54, 10,  1, 10,  4, 60,  1, 60,  8,  4,
     8, 64, 64, 61,  1, 63,  3, 63, 62, 61,  5, 11,  5,  3, 11, 62},

    /* value table */
    { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   0,   3,  -3,   1,  -1,
      2,  -2,   1,  -1,   1,  -1,   4,   1,  -4,  -1,   2,  -2,   1,  -1,   5,   3,
     -3,  -5,   2,   1,  -2,  -1,   1,  -1,   6,   2,   1,  -1,  -6,  -2,   1,  -1,
      3,  -3,   2,  -2,   4,  -4,   1,  -1,   1,  -1,   1,   2,  -1,   2,  -2,  -2,
      7,  -7,   1,  -1,   3,  -3,   8,  -8,   1,  -1,   5,  -5,   3,  -3,   1,   4,
      2,  -4,  -1,  -2,   1,   1,  -1,  -1,   9,   1,   1,  -9,  -1,   1,  -1,  -1,
      1,  -1,   3,  -3,   1,   3,  -3,  -1,   3,  -3,   1,  -1,  10,   1, -10,  -1,
      1,   4,  -1,   2,   1,  -1,   1,  -2,   1,  -4,  -1,   6,  -6,  -1,   1,   1,
      1,  -1,   1,   1,  -1,  -1,  -1,   1,  11,  -1,  -2,   4,  -1,   2, -11,   5,
     -5,  -4,  -1,   1,   4,   1,  -4,  -1,  -2,   2,   1,  -1,  12,   1,  -2,   1,
    -12,   4,   2,   1,  -1,  -4,   4,  -4,   2,  -2,  -1,   1,   7,  -1,  -1,  -7,
     -1,  -3,   1,   3,   1,   5,   2,   1,  -1,  -5,  13,  -2,  -1,   2,  -2, -13,
      1,  -1,   5,   6,   5,  -5,   1,   1,  -6,   1,  -1,  -1,  -5,  -1,  14,   2,
     -2,   1, -14,  -1,   8,   1,  -1,  -8,   1,   5,   1,   5,  -5,   1,  -1,   1,
     -5,  -1,  15,   1,  -1,  -1,  -1,   3, -15,  -3,   6,   1,  16,  -1,   6,  -6,
     -6,   1,  -1,   1, -16,   1,   7,  -1,   1,  -1,  -6,  -3,   6,  -7,   3,  -1}
},{
    /* MapTab3 */
    0,  /* eob_sym */
    35, /* esc_sym */
    /* run table */
    {0,  1,  1,  2,  2,  3,  3,  4,  4,  1,  1,  5,  5,  6,  6,  7,
     7,  8,  8,  9,  9,  2,  2, 10, 10,  1,  1, 11, 11, 12, 12,  3,
     3, 13, 13,  0, 14, 14, 16, 15, 16, 15,  4,  4, 17,  1, 17,  1,
     5,  5, 18, 18,  2,  2,  6,  6,  8, 19,  7,  8,  7, 19, 20, 20,
    21, 21, 22, 24, 22, 24, 23, 23,  1,  1, 25, 25,  3,  3, 26, 26,
     9,  9, 27, 27, 28, 28, 33, 29,  4, 33, 29,  1,  4,  1, 32, 32,
     2,  2, 31, 10, 30, 10, 30, 31, 34, 34,  5,  5, 36, 36, 35, 41,
    35, 11, 41, 11, 37,  1,  8,  8, 37,  6,  1,  6, 40,  7,  7, 40,
    12, 38, 12, 39, 39, 38, 49, 13, 49, 13,  3, 42,  3, 42, 16, 16,
    43, 43, 14, 14,  1,  1, 44, 15, 44, 15,  2,  2, 57, 48, 50, 48,
    57, 50,  4, 45, 45,  4, 46, 47, 47, 46,  1, 51,  1, 17, 17, 51,
     8,  9,  9,  5, 58,  8, 58,  5, 52, 52, 55, 56, 53, 56, 55, 59,
    59, 53, 54,  1,  6, 54,  7,  7,  6,  1,  2,  3,  2,  3, 64, 60,
    60, 10, 10, 64, 61, 62, 61, 63,  1, 63, 62,  1, 18, 24, 18,  4,
    25,  4,  8, 21, 21,  1, 24, 22, 25, 22,  8, 11, 19, 11, 23,  1,
    20, 23, 19, 20,  5, 12,  5,  1, 16,  2, 12, 13,  2, 13,  1, 16},

    /* value table */
    { 0,   1,  -1,   1,  -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,
     -1,   1,  -1,   1,  -1,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   1,  -1,   2,
     -2,   1,  -1,   0,   1,  -1,   1,   1,  -1,  -1,   2,  -2,   1,   4,  -1,  -4,
      2,  -2,   1,  -1,  -3,   3,   2,  -2,   2,   1,   2,  -2,  -2,  -1,   1,  -1,
      1,  -1,   1,   1,  -1,  -1,   1,  -1,   5,  -5,   1,  -1,   3,  -3,   1,  -1,
      2,  -2,   1,  -1,   1,  -1,   1,   1,   3,  -1,  -1,   6,  -3,  -6,  -1,   1,
      4,  -4,   1,   2,   1,  -2,  -1,  -1,   1,  -1,   3,  -3,   1,  -1,   1,   1,
     -1,   2,  -1,  -2,   1,   7,  -3,   3,  -1,   3,  -7,  -3,   1,  -3,   3,  -1,
      2,   1,  -2,   1,  -1,  -1,   1,   2,  -1,  -2,  -4,  -1,   4,   1,   2,  -2,
      1,  -1,  -2,   2,   8,  -8,  -1,   2,   1,  -2,  -5,   5,   1,  -1,  -1,   1,
     -1,   1,   4,  -1,   1,  -4,  -1,  -1,   1,   1,   9,   1,  -9,   2,  -2,  -1,
     -4,   3,  -3,  -4,  -1,   4,   1,   4,   1,  -1,   1,  -1,   1,   1,  -1,   1,
     -1,  -1,  -1,  10,   4,   1,   4,  -4,  -4, -10,   6,   5,  -6,  -5,   1,  -1,
      1,   3,  -3,  -1,   1,  -1,  -1,  -1,  11,   1,   1, -11,  -2,  -2,   2,   5,
     -2,  -5,  -5,   2,  -2,  12,   2,  -2,   2,   2,   5,  -3,  -2,   3,  -2, -12,
     -2,   2,   2,   2,  -5,   3,   5,  13,  -3,   7,  -3,  -3,  -7,   3, -13,   3}
},{
    /* MapTab4 */
    0,  /* eob_sym */
    34, /* esc_sym */
    /* run table */
    {0,  1,  1,  1,  2,  2,  1,  3,  3,  1,  1,  1,  4,  4,  1,  5,
     2,  1,  5,  2,  1,  1,  6,  6,  1,  1,  1,  1,  1,  7,  3,  1,
     2,  3,  0,  1,  2,  7,  1,  1,  1,  8,  1,  1,  8,  1,  1,  1,
     9,  1,  9,  1,  2,  1,  1,  2,  1,  1, 10,  4,  1, 10,  1,  4,
     1,  1,  1,  1,  1,  3,  1,  1,  1,  3,  2,  1,  5,  1,  1,  1,
     2,  5,  1, 11,  1, 11,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
     2,  1,  6,  1,  6,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1, 12,
     3,  1, 12,  1,  1,  1,  2,  1,  1,  3,  1,  1,  1,  1,  1,  1,
     4,  1,  1,  1,  2,  1,  1,  4,  1,  1,  1,  1,  1,  1,  2,  1,
     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  3,  1,  2,  1,  1,  5,
     1,  1,  1,  1,  1,  7,  1,  7,  1,  1,  2,  3,  1,  1,  1,  1,
     5,  1,  1,  1,  1,  1,  1,  2, 13,  1,  1,  1,  1,  1,  1,  1,
     1,  1,  1,  1,  1,  1,  1,  1, 13,  2,  1,  1,  4,  1,  1,  1,
     3,  1,  6,  1,  1,  1, 14,  1,  1,  1,  1,  1, 14,  6,  1,  1,
     1,  1, 15,  2,  4,  1,  2,  3, 15,  1,  1,  1,  8,  1,  1,  8,
     1,  1,  1,  1,  1,  1,  1,  1,  2,  1,  1,  1,  1,  1,  1,  1},

    /* value table */
    { 0,   1,  -1,   2,   1,  -1,  -2,   1,  -1,   3,  -3,   4,   1,  -1,  -4,   1,
      2,   5,  -1,  -2,  -5,   6,   1,  -1,  -6,   7,  -7,   8,  -8,   1,   2,   9,
      3,  -2,   0,  -9,  -3,  -1,  10, -10,  11,   1, -11,  12,  -1, -12,  13, -13,
      1,  14,  -1, -14,   4,  15, -15,  -4,  16, -16,   1,   2,  17,  -1, -17,  -2,
     18, -18,  19, -19,  20,   3, -20,  21, -21,  -3,   5,  22,   2, -22, -23,  23,
     -5,  -2,  24,   1, -24,  -1,  25, -25,  26, -26, -27,  27,  28,  29, -28, -29,
      6,  30,   2, -31,  -2, -30,  31,  -6, -32,  32,  33, -33,  34, -35, -34,   1,
      4, -36,  -1,  35,  37,  36,   7, -37,  38,  -4, -38,  39,  41,  40, -40, -39,
      3,  42, -43, -41,  -7, -42,  43,  -3,  44, -44,  45, -45,  46,  47,   8, -47,
    -48, -46,  50, -50,  48,  49,  51, -49,  52, -52,   5, -51,  -8, -53,  53,   3,
    -56,  56,  55,  54, -54,   2,  60,  -2, -55,  58,   9,  -5,  59,  57, -57, -63,
     -3, -58, -60, -61,  61, -59, -62,  -9,   1,  64,  62,  69, -64,  63,  65, -67,
    -68,  66, -65,  68, -66, -69,  67, -70,  -1,  10,  71, -71,   4,  73,  72,  70,
      6, -76,  -3,  74, -78, -74,   1,  78,  80, -72, -75,  76,  -1,   3, -73,  79,
     75,  77,   1,  11,  -4, -79, -10,  -6,  -1, -77, -83, -80,   2,  81, -84,  -2,
     83, -81,  82, -82,  84, -87, -86,  85, -11, -85,  86, -89,  87, -88,  88,  89}
},{
    /* MapTab5 */
    2,  /* eob_sym */
    33, /* esc_sym */
    /* run table */
    {1,  1,  0,  2,  1,  2,  1,  3,  3,  1,  1,  4,  4,  2,  2,  1,
     1,  5,  5,  6,  1,  6,  1,  7,  7,  3,  3,  2,  8,  2,  8,  1,
     1,  0,  9,  9,  1,  1, 10,  4, 10,  4, 11, 11,  2,  1,  2,  1,
    12, 12,  3,  3,  1,  1, 13,  5,  5, 13, 14,  1,  1, 14,  2,  2,
     6,  6, 15,  1,  1, 15, 16,  4,  7, 16,  4,  7,  1,  1,  3,  3,
     8,  8,  2,  2,  1,  1, 17, 17,  1,  1, 18, 18,  5,  5,  2,  2,
     1,  1,  9, 19,  9, 19, 20,  3,  3, 20,  1, 10, 21,  1, 10,  4,
     4, 21, 22,  6,  6, 22,  1,  1, 23, 24,  2,  2, 23, 24, 11,  1,
     1, 11,  7, 25,  7,  1,  1, 25,  8,  8,  3, 26,  3,  1, 12,  2,
     2, 26,  1, 12,  5,  5, 27,  4,  1,  4,  1, 27, 28,  1, 28, 13,
     1, 13,  2, 29,  2,  1, 32,  6,  1, 30, 14, 29, 14,  6,  3, 31,
     3,  1, 30,  1, 32, 31, 33,  9, 33,  1,  1,  7,  9,  7,  2,  2,
     1,  1,  4, 36, 34,  4,  5, 10, 10,  5, 34,  1,  1, 35,  8,  8,
    36,  3, 35,  1, 15,  3,  2,  1, 16, 15, 16,  2, 37,  1, 37,  1,
     1,  1,  6,  6, 38,  1, 38, 11,  1, 39, 39, 40, 11,  2, 41,  4,
    40,  1,  2,  4,  1,  1,  1, 41,  3,  1,  3,  1,  5,  7,  5,  7},

    /* value table */
    { 1,  -1,   0,   1,   2,  -1,  -2,   1,  -1,   3,  -3,   1,  -1,   2,  -2,   4,
     -4,   1,  -1,   1,   5,  -1,  -5,   1,  -1,   2,  -2,   3,   1,  -3,  -1,   6,
     -6,   0,   1,  -1,   7,  -7,   1,   2,  -1,  -2,   1,  -1,   4,   8,  -4,  -8,
      1,  -1,   3,  -3,   9,  -9,   1,   2,  -2,  -1,   1,  10, -10,  -1,   5,  -5,
      2,  -2,   1,  11, -11,  -1,   1,   3,   2,  -1,  -3,  -2,  12, -12,   4,  -4,
      2,  -2,  -6,   6,  13, -13,   1,  -1,  14, -14,   1,  -1,   3,  -3,   7,  -7,
     15, -15,   2,   1,  -2,  -1,   1,   5,  -5,  -1, -16,   2,   1,  16,  -2,   4,
     -4,  -1,   1,   3,  -3,  -1,  17, -17,   1,   1,  -8,   8,  -1,  -1,   2,  18,
    -18,  -2,   3,   1,  -3,  19, -19,  -1,   3,  -3,   6,   1,  -6,  20,   2,   9,
     -9,  -1, -20,  -2,   4,  -4,   1,  -5,  21,   5, -21,  -1,   1, -22,  -1,   2,
     22,  -2,  10,   1, -10,  23,   1,   4, -23,   1,   2,  -1,  -2,  -4,  -7,   1,
      7, -24,  -1,  24,  -1,  -1,   1,   3,  -1, -25,  25,   4,  -3,  -4,  11, -11,
     26, -26,   6,   1,   1,  -6,  -5,  -3,   3,   5,  -1, -27,  27,   1,   4,  -4,
     -1,  -8,  -1,  28,   2,   8, -12, -28,  -2,  -2,   2,  12,  -1,  29,   1, -29,
     30, -30,   5,  -5,   1, -31,  -1,   3,  31,  -1,   1,   1,  -3, -13,   1,  -7,
     -1, -32,  13,   7,  32,  33, -33,  -1,  -9, -34,   9,  34,  -6,   5,   6,  -5}
},{
    /* MapTab6 */
    2,  /* eob_sym */
    13, /* esc_sym */
    /* run table */
    {1,  1,  0,  1,  1,  2,  2,  1,  1,  3,  3,  1,  1,  0,  2,  2,
     4,  1,  4,  1,  1,  1,  5,  5,  1,  1,  6,  6,  2,  2,  1,  1,
     3,  3,  7,  7,  1,  1,  8,  8,  1,  1,  2,  2,  1,  9,  1,  9,
     4,  4, 10,  1,  1, 10,  1,  1, 11, 11,  3,  3,  1,  2,  1,  2,
     1,  1, 12, 12,  5,  5,  1,  1, 13,  1,  1, 13,  2,  2,  1,  1,
     6,  6,  1,  1,  4, 14,  4, 14,  3,  1,  3,  1,  1,  1, 15,  7,
    15,  2,  2,  7,  1,  1,  1,  8,  1,  8, 16, 16,  1,  1,  1,  1,
     2,  1,  1,  2,  1,  1,  3,  5,  5,  3,  4,  1,  1,  4,  1,  1,
    17, 17,  9,  1,  1,  9,  2,  2,  1,  1, 10, 10,  1,  6,  1,  1,
     6, 18,  1,  1, 18,  1,  1,  1,  2,  2,  3,  1,  3,  1,  1,  1,
     4,  1, 19,  1, 19,  7,  1,  1, 20,  1,  4, 20,  1,  7, 11,  2,
     1, 11, 21,  2,  8,  5,  1,  8,  1,  5, 21,  1,  1,  1, 22,  1,
     1, 22,  1,  1,  3,  3,  1, 23,  2, 12, 24,  1,  1,  2,  1,  1,
    12, 23,  1,  1, 24,  1,  1,  1,  4,  1,  1,  1,  2,  1,  6,  6,
     4,  2,  1,  1,  1,  1,  1,  1,  1, 14, 13,  3,  1, 25,  9, 25,
    14,  1,  9,  3, 13,  1,  1,  1,  1,  1, 10,  1,  1,  2, 10,  2},

    /* value table */
    {-20,  -1,   0,   2,  -2,   1,  -1,   3,  -3,   1,  -1,   4,  -4,   0,   2,  -2,
       1,   5,  -1,  -5,   6,  -6,   1,  -1,   7,  -7,   1,  -1,   3,  -3,   8,  -8,
       2,  -2,   1,  -1,   9,  -9,   1,  -1,  10, -10,   4,  -4,  11,   1, -11,  -1,
       2,  -2,   1,  12, -12,  -1,  13, -13,   1,  -1,   3,  -3,  14,   5, -14,  -5,
     -15,  15,  -1,   1,   2,  -2,  16, -16,   1,  17, -17,  -1,   6,  -6,  18, -18,
       2,  -2, -19,  19,  -3,   1,   3,  -1,   4,  20,  -4,   1, -21,  21,   1,   2,
      -1,  -7,   7,  -2,  22, -22,  23,   2, -23,  -2,   1,  -1, -24,  24, -25,  25,
      -8, -26,  26,   8, -27,  27,   5,   3,  -3,  -5,  -4,  28, -28,   4,  29, -29,
       1,  -1,  -2, -30,  30,   2,   9,  -9, -31,  31,   2,  -2, -32,   3,  32, -33,
      -3,   1,  33, -34,  -1,  34, -35,  35, -10,  10,  -6,  36,   6, -36,  37, -37,
      -5,  38,   1, -38,  -1,   3,  39, -39,  -1,  40,   5,   1, -40,  -3,   2, -11,
     -41,  -2,   1,  11,  -3,  -4,  41,   3,  42,   4,  -1, -43, -42,  43,   1, -44,
      45,  -1,  44, -45,  -7,   7, -46,   1, -12,   2,   1, -47,  46,  12,  47,  48,
      -2,  -1, -48,  49,  -1, -50, -49,  50,  -6, -51,  51,  52, -13,  53,  -4,   4,
       6,  13, -53, -52, -54,  55,  54, -55, -56,  -2,   2,  -8,  56,   1,  -3,  -1,
       2,  58,   3,   8,  -2,  57, -58, -60, -59, -57,  -3,  60,  59, -14,   3,  14}
},{
    /* MapTab7 */
    2,  /* eob_sym */
    38, /* esc_sym */
    /* run table */
    {1,  1,  0,  2,  2,  1,  1,  3,  3,  4,  4,  5,  5,  1,  1,  6,
     6,  2,  2,  7,  7,  8,  8,  1,  1,  3,  3,  9,  9, 10, 10,  1,
     1,  2,  2,  4,  4, 11,  0, 11, 12, 12, 13, 13,  1,  1,  5,  5,
    14, 14, 15, 16, 15, 16,  3,  3,  1,  6,  1,  6,  2,  2,  7,  7,
     8,  8, 17, 17,  1,  1,  4,  4, 18, 18,  2,  2,  1, 19,  1, 20,
    19, 20, 21, 21,  3,  3, 22, 22,  5,  5, 24,  1,  1, 23,  9, 23,
    24,  9,  2,  2, 10,  1,  1, 10,  6,  6, 25,  4,  4, 25,  7,  7,
    26,  8,  1,  8,  3,  1, 26,  3, 11, 11, 27, 27,  2, 28,  1,  2,
    28,  1, 12, 12,  5,  5, 29, 13, 13, 29, 32,  1,  1, 33, 31, 30,
    32,  4, 30, 33,  4, 31,  3, 14,  1,  1,  3, 34, 34,  2,  2, 14,
     6,  6, 35, 36, 35, 36,  1, 15,  1, 16, 16, 15,  7,  9,  7,  9,
    37,  8,  8, 37,  1,  1, 39,  2, 38, 39,  2, 40,  5, 38, 40,  5,
     3,  3,  4,  4, 10, 10,  1,  1,  1,  1, 41,  2, 41,  2,  6,  6,
     1,  1, 11, 42, 11, 43,  3, 42,  3, 17,  4, 43,  1, 17,  7,  1,
     8, 44,  4,  7, 44,  5,  8,  2,  5,  1,  2, 48, 45,  1, 12, 45,
    12, 48, 13, 13,  1,  9,  9, 46,  1, 46, 47, 47, 49, 18, 18, 49},

    /* value table */
    { 1,  -1,   0,   1,  -1,   2,  -2,   1,  -1,   1,  -1,   1,  -1,   3,  -3,   1,
     -1,  -2,   2,   1,  -1,   1,  -1,   4,  -4,  -2,   2,   1,  -1,   1,  -1,   5,
     -5,  -3,   3,   2,  -2,   1,   0,  -1,   1,  -1,   1,  -1,   6,  -6,   2,  -2,
      1,  -1,   1,   1,  -1,  -1,  -3,   3,   7,   2,  -7,  -2,  -4,   4,   2,  -2,
      2,  -2,   1,  -1,   8,  -8,   3,  -3,   1,  -1,  -5,   5,   9,   1,  -9,   1,
     -1,  -1,   1,  -1,  -4,   4,   1,  -1,   3,  -3,   1, -10,  10,   1,   2,  -1,
     -1,  -2,   6,  -6,   2,  11, -11,  -2,   3,  -3,   1,  -4,   4,  -1,   3,  -3,
      1,   3,  12,  -3,  -5, -12,  -1,   5,   2,  -2,   1,  -1,  -7,   1,  13,   7,
     -1, -13,   2,  -2,   4,  -4,   1,   2,  -2,  -1,   1,  14, -14,   1,   1,   1,
     -1,  -5,  -1,  -1,   5,  -1,  -6,   2, -15,  15,   6,   1,  -1,  -8,   8,  -2,
     -4,   4,   1,   1,  -1,  -1,  16,   2, -16,  -2,   2,  -2,   4,   3,  -4,  -3,
     -1,  -4,   4,   1, -17,  17,  -1,  -9,   1,   1,   9,   1,  -5,  -1,  -1,   5,
     -7,   7,   6,  -6,   3,  -3,  18, -18,  19, -19,   1, -10,  -1,  10,  -5,   5,
     20, -20,  -3,   1,   3,   1,   8,  -1,  -8,   2,   7,  -1, -21,  -2,   5,  21,
      5,  -1,  -7,  -5,   1,  -6,  -5, -11,   6,  22,  11,   1,   1, -22,  -3,  -1,
      3,  -1,   3,  -3, -23,   4,  -4,   1,  23,  -1,   1,  -1,   1,  -2,   2,  -1}
},{
    /* MapTab8 */
    4,  /* eob_sym */
    11, /* esc_sym */
    /* run table */
    {1,  1,  1,  1,  0,  2,  2,  1,  1,  3,  3,  0,  1,  1,  2,  2,
     4,  4,  1,  1,  5,  5,  1,  1,  2,  2,  3,  3,  6,  6,  1,  1,
     7,  7,  8,  1,  8,  2,  2,  1,  4,  4,  1,  3,  1,  3,  9,  9,
     2,  2,  1,  5,  1,  5, 10, 10,  1,  1, 11, 11,  3,  6,  3,  4,
     4,  6,  2,  2,  1, 12,  1, 12,  7, 13,  7, 13,  1,  1,  8,  8,
     2,  2, 14, 14, 16, 15, 16,  5,  5,  1,  3, 15,  1,  3,  4,  4,
     1,  1, 17, 17,  2,  2,  6,  6,  1, 18,  1, 18, 22, 21, 22, 21,
    25, 24, 25, 19,  9, 20,  9, 23, 19, 24, 20,  3, 23,  7,  3,  1,
     1,  7, 28, 26, 29,  5, 28, 26,  5,  8, 29,  4,  8, 27,  2,  2,
     4, 27,  1,  1, 10, 36, 10, 33, 33, 36, 30,  1, 32, 32,  1, 30,
     6, 31, 31, 35,  3,  6, 11, 11,  3,  2, 35,  2, 34,  1, 34,  1,
    37, 37, 12,  7, 12,  5, 41,  5,  4,  7,  1,  8, 13,  4,  1, 41,
    13, 38,  8, 38,  9,  1, 40, 40,  9,  1, 39,  2,  2, 49, 39, 42,
     3,  3, 14, 16, 49, 14, 16, 42, 43, 43,  6,  6, 15,  1,  1, 15,
    44, 44,  1,  1, 50, 48,  4,  5,  4,  7,  5,  2, 10, 10, 48,  7,
    50, 45,  2,  1, 45,  8,  8,  1, 46, 46,  3, 47, 47,  3,  1,  1},

    /* value table */
    { 1,  -1,   2,  -2,   0,   1,  -1,   3,  -3,   1,  -1,   0,   4,  -4,   2,  -2,
      1,  -1,   5,  -5,   1,  -1,   6,  -6,   3,  -3,   2,  -2,   1,  -1,   7,  -7,
      1,  -1,   1,   8,  -1,   4,  -4,  -8,   2,  -2,   9,   3,  -9,  -3,   1,  -1,
      5,  -5,  10,   2, -10,  -2,   1,  -1,  11, -11,   1,  -1,  -4,   2,   4,   3,
     -3,  -2,   6,  -6,  12,   1, -12,  -1,   2,   1,  -2,  -1,  13, -13,   2,  -2,
      7,  -7,   1,  -1,   1,   1,  -1,   3,  -3,  14,   5,  -1, -14,  -5,   4,  -4,
     15, -15,   1,  -1,   8,  -8,  -3,   3,  16,   1, -16,  -1,   1,   1,  -1,  -1,
      1,   1,  -1,   1,   2,   1,  -2,   1,  -1,  -1,  -1,   6,  -1,   3,  -6,  17,
    -17,  -3,   1,   1,   1,   4,  -1,  -1,  -4,   3,  -1,   5,  -3,  -1,  -9,   9,
     -5,   1,  18, -18,   2,   1,  -2,   1,  -1,  -1,   1,  19,  -1,   1, -19,  -1,
      4,   1,  -1,   1,   7,  -4,  -2,   2,  -7,  10,  -1, -10,   1,  20,  -1, -20,
      1,  -1,   2,   4,  -2,   5,   1,  -5,   6,  -4,  21,   4,   2,  -6, -21,  -1,
     -2,   1,  -4,  -1,  -3,  22,  -1,   1,   3, -22,  -1,  11, -11,   1,   1,   1,
      8,  -8,   2,   2,  -1,  -2,  -2,  -1,   1,  -1,  -5,   5,   2,  23, -23,  -2,
      1,  -1,  24, -24,  -1,  -1,   7,   6,  -7,   5,  -6,  12,  -3,   3,   1,  -5,
      1,   1, -12,  25,  -1,  -5,   5, -25,  -1,   1,   9,   1,  -1,  -9,  26, -26}
}
};