ivi.c 65.9 KB
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/*
 * 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
 */

/**
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 * @file
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 * This file contains functions and data shared by both Indeo4 and
 * Indeo5 decoders.
 */

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#include <inttypes.h>

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#include "libavutil/attributes.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/timer.h"
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#define BITSTREAM_READER_LE
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#include "avcodec.h"
#include "get_bits.h"
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#include "internal.h"
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#include "mathops.h"
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#include "ivi.h"
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#include "ivi_dsp.h"

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/**
 * 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}}
};
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static VLC ivi_mb_vlc_tabs [8]; ///< static macroblock Huffman tables
static VLC ivi_blk_vlc_tabs[8]; ///< static block Huffman tables
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typedef void (*ivi_mc_func) (int16_t *buf, const int16_t *ref_buf,
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                             ptrdiff_t pitch, int mc_type);
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typedef void (*ivi_mc_avg_func) (int16_t *buf, const int16_t *ref_buf1,
                                 const int16_t *ref_buf2,
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                                 ptrdiff_t pitch, int mc_type, int mc_type2);
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static int ivi_mc(const IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg,
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                  int offs, int mv_x, int mv_y, int mv_x2, int mv_y2,
                  int mc_type, int mc_type2)
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{
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    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);
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    if (mc_type != -1) {
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        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);
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    }
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    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;
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        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);
    }
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    return 0;
}

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/**
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 *  Reverse "nbits" bits of the value "val" and return the result
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 *  in the least significant bits.
 */
static uint16_t inv_bits(uint16_t val, int nbits)
{
    uint16_t res;

    if (nbits <= 8) {
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        res = ff_reverse[val] >> (8 - nbits);
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    } else
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        res = ((ff_reverse[val & 0xFF] << 8) +
               (ff_reverse[val >> 8])) >> (16 - nbits);
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    return res;
}

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/*
 *  Generate a huffman codebook from the given descriptor
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 *  and convert it into the FFmpeg VLC table.
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 *
 *  @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)
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{
    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)
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                return AVERROR_INVALIDDATA; /* invalid descriptor */
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            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,
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                    (flag ? INIT_VLC_USE_NEW_STATIC : 0) | INIT_VLC_LE);
}

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av_cold void ff_ivi_init_static_vlc(void)
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{
    int i;
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    static VLC_TYPE table_data[8192 * 16][2];
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    static int initialized_vlcs = 0;

    if (initialized_vlcs)
        return;
    for (i = 0; i < 8; i++) {
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        ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;
        ivi_mb_vlc_tabs[i].table_allocated = 8192;
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        ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],
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                                  &ivi_mb_vlc_tabs[i], 1);
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        ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;
        ivi_blk_vlc_tabs[i].table_allocated = 8192;
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        ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],
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                                  &ivi_blk_vlc_tabs[i], 1);
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    }
    initialized_vlcs = 1;
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}

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/*
 *  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
 */
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static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,
                             const IVIHuffDesc *desc2)
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{
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    return desc1->num_rows != desc2->num_rows ||
           memcmp(desc1->xbits, desc2->xbits, desc1->num_rows);
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}

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int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
                         IVIHuffTab *huff_tab, AVCodecContext *avctx)
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{
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    int i, result;
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    IVIHuffDesc new_huff;
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    if (!desc_coded) {
        /* select default table */
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        huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[7]
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                                    : &ivi_mb_vlc_tabs [7];
        return 0;
    }
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    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. */
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        if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc) || !huff_tab->cust_tab.table) {
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            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;
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            }
        }
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        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];
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    }

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    return 0;
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}

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/*
 *  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)
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{
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    int p, b, t;
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    for (p = 0; p < 3; p++) {
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        if (planes[p].bands)
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        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]);
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            av_freep(&planes[p].bands[b].bufs[3]);
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            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);
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        planes[p].num_bands = 0;
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    }
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}

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av_cold int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg,
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                               int is_indeo4)
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{
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    int p, b;
    uint32_t b_width, b_height, align_fac, width_aligned,
             height_aligned, buf_size;
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    IVIBandDesc *band;

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    ivi_free_buffers(planes);
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    if (av_image_check_size2(cfg->pic_width, cfg->pic_height, avctx->max_pixels, AV_PIX_FMT_YUV410P, 0, avctx) < 0 ||
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        cfg->luma_bands < 1 || cfg->chroma_bands < 1)
        return AVERROR_INVALIDDATA;

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    /* 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++) {
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        planes[p].bands = av_mallocz_array(planes[p].num_bands, sizeof(IVIBandDesc));
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        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 */
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        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;
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        /* 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;
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            band->aheight  = height_aligned;
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            av_assert0(!band->bufs[0] && !band->bufs[1] &&
                       !band->bufs[2] && !band->bufs[3]);
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            band->bufsize  = buf_size/2;
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            av_assert0(buf_size % 2 == 0);
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            /* reset custom vlc */
            planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0;
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        }
    }

    return 0;
}

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static int ivi_init_tiles(const IVIBandDesc *band, IVITile *ref_tile,
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                          int p, int b, int t_height, int t_width)
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{
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    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);
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            tile->mbs = av_mallocz_array(tile->num_MBs, sizeof(IVIMbInfo));
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            if (!tile->mbs)
                return AVERROR(ENOMEM);

            tile->ref_mbs = 0;
            if (p || b) {
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                if (tile->num_MBs != ref_tile->num_MBs) {
                    av_log(NULL, AV_LOG_DEBUG, "ref_tile mismatch\n");
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                    return AVERROR_INVALIDDATA;
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                }
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                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;
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    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;

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        if (!p && planes[0].num_bands == 4) {
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            if (t_width % 2 || t_height % 2) {
                avpriv_request_sample(NULL, "Odd tiles");
                return AVERROR_PATCHWELCOME;
            }
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            t_width  >>= 1;
            t_height >>= 1;
        }
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        if(t_width<=0 || t_height<=0)
            return AVERROR(EINVAL);
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        for (b = 0; b < planes[p].num_bands; b++) {
            band = &planes[p].bands[b];
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            if (band->tiles) {
                int t;
                for (t = 0; t < band->num_tiles; t++) {
                    av_freep(&band->tiles[t].mbs);
                }
            }

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            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);
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            band->tiles = av_mallocz_array(band->num_tiles, sizeof(IVITile));
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            if (!band->tiles)
                return AVERROR(ENOMEM);

            /* use the first luma band as reference for motion vectors
             * and quant */
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            ret = ivi_init_tiles(band, planes[0].bands[0].tiles,
                                 p, b, t_height, t_width);
            if (ret < 0)
                return ret;
        }
    }
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    return 0;
}

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/*
 *  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)
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{
    int    len;

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

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

    return len;
}

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static int ivi_dc_transform(const IVIBandDesc *band, int *prev_dc, int buf_offs,
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                            int blk_size)
{
    band->dc_transform(prev_dc, band->buf + buf_offs,
                       band->pitch, blk_size);

    return 0;
}
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static int ivi_decode_coded_blocks(GetBitContext *gb, const IVIBandDesc *band,
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                                   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,
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                                   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;
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    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;
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    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) {
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                av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %"PRIu32".\n", sym);
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                return AVERROR_INVALIDDATA;
            }
            run = rvmap->runtab[sym];
            val = rvmap->valtab[sym];
        }

        /* de-zigzag and dequantize */
        scan_pos += run;
556
        if (scan_pos >= num_coeffs || scan_pos < 0)
557 558 559 560
            break;
        pos = band->scan[scan_pos];

        if (!val)
561
            ff_dlog(avctx, "Val = 0 encountered!\n");
562 563 564 565 566 567 568 569 570

        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;
    }

571
    if (scan_pos < 0 || scan_pos >= num_coeffs && sym != rvmap->eob_sym)
572 573 574 575 576 577 578 579 580
        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;
    }

581 582 583 584 585
    if(band->transform_size > band->blk_size){
        av_log(NULL, AV_LOG_ERROR, "Too large transform\n");
        return AVERROR_INVALIDDATA;
    }

586 587 588 589 590 591
    /* apply inverse transform */
    band->inv_transform(trvec, band->buf + offs,
                        band->pitch, col_flags);

    /* apply motion compensation */
    if (!is_intra)
592 593
        return ivi_mc(band, mc, mc_avg, offs, mv_x, mv_y, mv_x2, mv_y2,
                      mc_type, mc_type2);
594 595 596

    return 0;
}
597 598 599 600 601 602 603 604 605 606 607
/*
 *  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)
 */
608
static int ivi_decode_blocks(GetBitContext *gb, const IVIBandDesc *band,
609
                             IVITile *tile, AVCodecContext *avctx)
610
{
611 612 613
    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;
614 615 616
    int32_t prev_dc;
    uint32_t cbp, quant, buf_offs;
    IVIMbInfo *mb;
617
    ivi_mc_func mc_with_delta_func, mc_no_delta_func;
618
    ivi_mc_avg_func mc_avg_with_delta_func, mc_avg_no_delta_func;
619
    const uint8_t *scale_tab;
620

621 622
    /* init intra prediction for the DC coefficient */
    prev_dc    = 0;
623
    blk_size   = band->blk_size;
624 625
    /* number of blocks per mb */
    num_blocks = (band->mb_size != blk_size) ? 4 : 1;
626
    if (blk_size == 8) {
627 628 629 630
        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;
631
    } else {
632 633 634 635
        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;
636 637 638 639 640 641 642
    }

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

643 644
        quant = band->glob_quant + mb->q_delta;
        if (avctx->codec_id == AV_CODEC_ID_INDEO4)
645
            quant = av_clip_uintp2(quant, 5);
646 647
        else
            quant = av_clip(quant, 0, 23);
648 649

        scale_tab = is_intra ? band->intra_scale : band->inter_scale;
650 651
        if (scale_tab)
            quant = scale_tab[quant];
652 653

        if (!is_intra) {
654 655 656 657
            mv_x  = mb->mv_x;
            mv_y  = mb->mv_y;
            mv_x2 = mb->b_mv_x;
            mv_y2 = mb->b_mv_y;
658
            if (band->is_halfpel) {
659 660 661 662 663 664
                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 */
665
            }
666 667 668 669
            if (mb->type == 2)
                mc_type = -1;
            if (mb->type != 2 && mb->type != 3)
                mc_type2 = -1;
670 671 672 673 674 675 676 677
            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;

678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
                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;

693 694 695 696
                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) {
697 698 699
                    return AVERROR_INVALIDDATA;
                }
            }
700 701 702 703 704 705 706 707 708 709 710 711
        }

        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 ? */
712
                ret = ivi_decode_coded_blocks(gb, band, mc_with_delta_func,
713 714 715 716 717
                                              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);
718 719
                if (ret < 0)
                    return ret;
720
            } else {
721 722 723 724 725
                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;
726 727 728
                /* block not coded */
                /* for intra blocks apply the dc slant transform */
                /* for inter - perform the motion compensation without delta */
729
                if (is_intra) {
730 731 732
                    ret = ivi_dc_transform(band, &prev_dc, buf_offs, blk_size);
                    if (ret < 0)
                        return ret;
733
                } else {
734 735 736
                    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);
737 738 739
                    if (ret < 0)
                        return ret;
                }
740 741 742 743 744 745 746 747 748 749 750
            }

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

    align_get_bits(gb);

    return 0;
}

751 752 753 754 755 756 757 758 759
/**
 *  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
 */
760
static int ivi_process_empty_tile(AVCodecContext *avctx, const IVIBandDesc *band,
761
                                  IVITile *tile, int32_t mv_scale)
762 763
{
    int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
764
    int             offs, mb_offset, row_offset, ret;
765 766 767
    IVIMbInfo       *mb, *ref_mb;
    const int16_t   *src;
    int16_t         *dst;
768
    ivi_mc_func     mc_no_delta_func;
769 770 771 772 773
    int             clear_first = !band->qdelta_present && !band->plane && !band->band_num;
    int             mb_size     = band->mb_size;
    int             xend        = tile->xpos + tile->width;
    int             is_halfpel  = band->is_halfpel;
    int             pitch       = band->pitch;
774

775
    if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, mb_size)) {
776 777
        av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches "
               "parameters %d in ivi_process_empty_tile()\n",
778
               tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, mb_size));
779
        return AVERROR_INVALIDDATA;
780 781
    }

782
    offs       = tile->ypos * pitch + tile->xpos;
783 784
    mb         = tile->mbs;
    ref_mb     = tile->ref_mbs;
785
    row_offset = mb_size * pitch;
786 787
    need_mc    = 0; /* reset the mc tracking flag */

788
    for (y = tile->ypos; y < (tile->ypos + tile->height); y += mb_size) {
789 790
        mb_offset = offs;

791
        for (x = tile->xpos; x < xend; x += mb_size) {
792 793 794 795 796 797 798
            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 */

799
            if (clear_first) {
800 801 802 803 804
                mb->q_delta = band->glob_quant;
                mb->mv_x    = 0;
                mb->mv_y    = 0;
            }

805
            if (ref_mb) {
806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821
                if (band->inherit_qdelta)
                    mb->q_delta = ref_mb->q_delta;

                if (band->inherit_mv) {
                    /* 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 */
                    {
                        int dmv_x, dmv_y, cx, cy;

822 823 824 825
                        dmv_x = mb->mv_x >> is_halfpel;
                        dmv_y = mb->mv_y >> is_halfpel;
                        cx    = mb->mv_x &  is_halfpel;
                        cy    = mb->mv_y &  is_halfpel;
826 827

                        if (   mb->xpos + dmv_x < 0
828
                            || mb->xpos + dmv_x + mb_size + cx > pitch
829
                            || mb->ypos + dmv_y < 0
830
                            || mb->ypos + dmv_y + mb_size + cy > band->aheight) {
831 832 833
                            av_log(avctx, AV_LOG_ERROR, "MV out of bounds\n");
                            return AVERROR_INVALIDDATA;
                        }
834 835
                    }
                }
836 837
                ref_mb++;
            }
838 839

            mb++;
840
            mb_offset += mb_size;
841 842 843 844 845
        } // 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 */
846
        num_blocks = (mb_size != band->blk_size) ? 4 : 1; /* number of blocks per mb */
847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
        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 */
863
                offs = mb->buf_offs + band->blk_size * ((blk & 1) + !!(blk & 2) * pitch);
864 865
                ret = ivi_mc(band, mc_no_delta_func, 0, offs,
                             mv_x, mv_y, 0, 0, mc_type, -1);
866 867
                if (ret < 0)
                    return ret;
868 869 870 871
            }
        }
    } else {
        /* copy data from the reference tile into the current one */
872 873
        src = band->ref_buf + tile->ypos * pitch + tile->xpos;
        dst = band->buf     + tile->ypos * pitch + tile->xpos;
874 875
        for (y = 0; y < tile->height; y++) {
            memcpy(dst, src, tile->width*sizeof(band->buf[0]));
876 877
            src += pitch;
            dst += pitch;
878 879
        }
    }
880 881

    return 0;
882 883 884
}


885
#ifdef DEBUG
886
static uint16_t ivi_calc_band_checksum(const IVIBandDesc *band)
887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
{
    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

902 903 904 905 906 907 908 909 910
/*
 *  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
 */
911
static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, ptrdiff_t dst_pitch)
912 913 914
{
    int             x, y;
    const int16_t   *src  = plane->bands[0].buf;
915
    ptrdiff_t       pitch = plane->bands[0].pitch;
916

917
    if (!src)
918 919
        return;

920
    for (y = 0; y < plane->height; y++) {
921
        int m = 0;
922 923
        int w = plane->width;
        for (x = 0; x < w; x++) {
924 925 926 927 928
            int t = src[x] + 128;
            dst[x] = t;
            m |= t;
        }
        if (m & ~255)
929
            for (x = 0; x < w; x++)
930
                dst[x] = av_clip_uint8(src[x] + 128);
931 932 933 934 935
        src += pitch;
        dst += dst_pitch;
    }
}

936 937 938 939 940 941 942 943 944
static void *prepare_buf(IVI45DecContext *ctx, IVIBandDesc *band, int i)
{
    if (ctx->pic_conf.luma_bands <= 1 && i == 2)
        return NULL;
    if (!band->bufs[i])
        band->bufs[i] = av_mallocz(2 * band->bufsize);
    return band->bufs[i];
}

945 946 947 948 949 950 951 952
/**
 *  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
 */
953
static int decode_band(IVI45DecContext *ctx,
954 955 956 957 958
                       IVIBandDesc *band, AVCodecContext *avctx)
{
    int         result, i, t, idx1, idx2, pos;
    IVITile     *tile;

959
    band->buf     = prepare_buf(ctx, band, ctx->dst_buf);
960 961 962 963
    if (!band->buf) {
        av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");
        return AVERROR_INVALIDDATA;
    }
964
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_BIDIR) {
965 966 967 968
        band->ref_buf   = prepare_buf(ctx, band, ctx->b_ref_buf);
        band->b_ref_buf = prepare_buf(ctx, band, ctx->ref_buf);
        if (!band->b_ref_buf)
            return AVERROR(ENOMEM);
969
    } else {
970
        band->ref_buf   = prepare_buf(ctx, band, ctx->ref_buf);
971 972
        band->b_ref_buf = 0;
    }
973 974
    if (!band->ref_buf)
        return AVERROR(ENOMEM);
975
    band->data_ptr  = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996

    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]);
997 998 999 1000
        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;
1001 1002 1003 1004 1005 1006 1007
    }

    pos = get_bits_count(&ctx->gb);

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

1008 1009 1010 1011 1012
        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;
        }
1013 1014
        tile->is_empty = get_bits1(&ctx->gb);
        if (tile->is_empty) {
1015
            result = ivi_process_empty_tile(avctx, band, tile,
1016
                                      (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
1017 1018
            if (result < 0)
                break;
1019
            ff_dlog(avctx, "Empty tile encountered!\n");
1020
        } else {
1021
            tile->data_size = ivi_dec_tile_data_size(&ctx->gb);
1022 1023
            if (!tile->data_size) {
                av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
1024 1025
                result = AVERROR_INVALIDDATA;
                break;
1026 1027 1028 1029 1030 1031
            }

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

1032
            result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
            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;
1043 1044 1045 1046 1047 1048 1049
                break;
            }

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

1050 1051
    /* restore the selected rvmap table by applying its corrections in
     * reverse order */
1052 1053 1054 1055 1056
    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]);
1057 1058 1059 1060
        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;
1061 1062 1063 1064 1065 1066 1067
    }

#ifdef DEBUG
    if (band->checksum_present) {
        uint16_t chksum = ivi_calc_band_checksum(band);
        if (chksum != band->checksum) {
            av_log(avctx, AV_LOG_ERROR,
1068
                   "Band checksum mismatch! Plane %d, band %d, "
1069
                   "received: %"PRIx32", calculated: %"PRIx16"\n",
1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
                   band->plane, band->band_num, band->checksum, chksum);
        }
    }
#endif

    align_get_bits(&ctx->gb);

    return result;
}

1080
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
1081 1082 1083 1084
                        AVPacket *avpkt)
{
    IVI45DecContext *ctx = avctx->priv_data;
    const uint8_t   *buf = avpkt->data;
1085
    AVFrame       *frame = data;
1086 1087 1088
    int             buf_size = avpkt->size;
    int             result, p, b;

1089 1090 1091
    result = init_get_bits8(&ctx->gb, buf, buf_size);
    if (result < 0)
        return result;
1092 1093 1094 1095 1096 1097 1098
    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);
1099
        return result;
1100
    }
1101 1102
    if (ctx->gop_invalid)
        return AVERROR_INVALIDDATA;
1103

1104
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_NULL_LAST) {
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
        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;
    }

1115
    if (ctx->gop_flags & IVI5_IS_PROTECTED) {
1116
        avpriv_report_missing_feature(avctx, "Password-protected clip");
1117
        return AVERROR_PATCHWELCOME;
1118 1119
    }

1120 1121 1122 1123 1124
    if (!ctx->planes[0].bands) {
        av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");
        return AVERROR_INVALIDDATA;
    }

1125 1126 1127 1128 1129
    ctx->switch_buffers(ctx);

    //{ START_TIMER;

    if (ctx->is_nonnull_frame(ctx)) {
1130
        ctx->buf_invalid[ctx->dst_buf] = 1;
1131 1132
        for (p = 0; p < 3; p++) {
            for (b = 0; b < ctx->planes[p].num_bands; b++) {
1133
                result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);
1134
                if (result < 0) {
1135 1136
                    av_log(avctx, AV_LOG_ERROR,
                           "Error while decoding band: %d, plane: %d\n", b, p);
1137
                    return result;
1138 1139 1140
                }
            }
        }
1141
        ctx->buf_invalid[ctx->dst_buf] = 0;
1142 1143 1144 1145 1146 1147 1148 1149
    } else {
        if (ctx->is_scalable)
            return AVERROR_INVALIDDATA;

        for (p = 0; p < 3; p++) {
            if (!ctx->planes[p].bands[0].buf)
                return AVERROR_INVALIDDATA;
        }
1150
    }
1151 1152
    if (ctx->buf_invalid[ctx->dst_buf])
        return -1;
1153 1154 1155

    //STOP_TIMER("decode_planes"); }

1156
    if (!ctx->is_nonnull_frame(ctx))
1157 1158
        return buf_size;

1159 1160 1161 1162
    result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);
    if (result < 0)
        return result;

1163
    if ((result = ff_get_buffer(avctx, frame, 0)) < 0)
1164 1165 1166
        return result;

    if (ctx->is_scalable) {
1167
        if (ctx->is_indeo4)
1168
            ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1169
        else
1170
            ff_ivi_recompose53   (&ctx->planes[0], frame->data[0], frame->linesize[0]);
1171
    } else {
1172
        ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1173 1174
    }

1175 1176
    ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);
    ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);
1177

1178
    *got_frame = 1;
1179

1180 1181 1182 1183 1184
    /* 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.
     */
1185
    if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
        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 &&
1196
            show_bits(&ctx->gb, 21) == 0xBFFF8) { // syncheader + inter type
1197 1198 1199 1200 1201 1202 1203
            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);
        }
    }

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
    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;
    }

1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
    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;

1230
    ivi_free_buffers(&ctx->planes[0]);
1231 1232 1233 1234

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

1235 1236 1237
    if (ctx->blk_vlc.cust_tab.table)
        ff_free_vlc(&ctx->blk_vlc.cust_tab);

1238 1239
    av_frame_free(&ctx->p_frame);

1240 1241 1242
    return 0;
}

1243

1244 1245 1246
/**
 *  Scan patterns shared between indeo4 and indeo5
 */
1247
const uint8_t ff_ivi_vertical_scan_8x8[64] = {
1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
    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
};

1258
const uint8_t ff_ivi_horizontal_scan_8x8[64] = {
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
     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
};

1269
const uint8_t ff_ivi_direct_scan_4x4[16] = {
1270 1271 1272 1273
    0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
};


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 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629
/**
 *  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}
}
};