ivi_common.c 54.7 KB
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/*
 * common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
 *
 * Copyright (c) 2009 Maxim Poliakovski
 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * 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.
 *
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 * Libav is distributed in the hope that it will be useful,
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 * 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
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 * License along with Libav; if not, write to the Free Software
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 * 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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#define BITSTREAM_READER_LE
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#include "avcodec.h"
#include "get_bits.h"
#include "ivi_common.h"
#include "libavutil/common.h"
#include "ivi_dsp.h"

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extern const IVIHuffDesc ff_ivi_mb_huff_desc[8];  ///< static macroblock huffman tables
extern const IVIHuffDesc ff_ivi_blk_huff_desc[8]; ///< static block huffman tables

VLC ff_ivi_mb_vlc_tabs [8];
VLC ff_ivi_blk_vlc_tabs[8];

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

    return res;
}

int ff_ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)
{
    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)
                return -1; /* invalid descriptor */

            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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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++) {
        ff_ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;
        ff_ivi_mb_vlc_tabs[i].table_allocated = 8192;
        ff_ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],  &ff_ivi_mb_vlc_tabs[i],  1);
        ff_ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;
        ff_ivi_blk_vlc_tabs[i].table_allocated = 8192;
        ff_ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i], &ff_ivi_blk_vlc_tabs[i], 1);
    }
    initialized_vlcs = 1;
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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;
    IVIHuffDesc new_huff;
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    if (!desc_coded) {
        /* select default table */
        huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[7]
            : &ff_ivi_mb_vlc_tabs [7];
    } else {
        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);
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            if (!new_huff.num_rows) {
                av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
                return AVERROR_INVALIDDATA;
            }
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            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. */
            if (ff_ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {
                ff_ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);

                if (huff_tab->cust_tab.table)
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                    ff_free_vlc(&huff_tab->cust_tab);
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                result = ff_ivi_create_huff_from_desc(&huff_tab->cust_desc,
                        &huff_tab->cust_tab, 0);
                if (result) {
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                    huff_tab->cust_desc.num_rows = 0; // reset faulty description
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                    av_log(avctx, AV_LOG_ERROR,
                           "Error while initializing custom vlc table!\n");
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                    return result;
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                }
            }
            huff_tab->tab = &huff_tab->cust_tab;
        } else {
            /* select one of predefined tables */
            huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[huff_tab->tab_sel]
                : &ff_ivi_mb_vlc_tabs [huff_tab->tab_sel];
        }
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    }

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    return 0;
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}

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

void ff_ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)
{
    dst->num_rows = src->num_rows;
    memcpy(dst->xbits, src->xbits, src->num_rows);
}

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

    ff_ivi_free_buffers(planes);

    /* 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++) {
        planes[p].bands = av_mallocz(planes[p].num_bands * sizeof(IVIBandDesc));
        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 */
        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;

        /* 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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            band->bufs[0]  = av_mallocz(buf_size);
            band->bufs[1]  = av_mallocz(buf_size);
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            if (!band->bufs[0] || !band->bufs[1])
                return AVERROR(ENOMEM);

            /* allocate the 3rd band buffer for scalability mode */
            if (cfg->luma_bands > 1) {
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                band->bufs[2] = av_mallocz(buf_size);
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                if (!band->bufs[2])
                    return AVERROR(ENOMEM);
            }

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            planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0; /* reset custom vlc */
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        }
    }

    return 0;
}

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av_cold void ff_ivi_free_buffers(IVIPlaneDesc *planes)
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{
    int p, b, t;

    for (p = 0; p < 3; p++) {
        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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            if (planes[p].bands[b].blk_vlc.cust_tab.table)
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                ff_free_vlc(&planes[p].bands[b].blk_vlc.cust_tab);
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            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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av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
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{
    int         p, b, x, y, x_tiles, y_tiles, t_width, t_height;
    IVIBandDesc *band;
    IVITile     *tile, *ref_tile;

    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) {
            t_width  >>= 1;
            t_height >>= 1;
        }

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

            tile = band->tiles;

            /* use the first luma band as reference for motion vectors
             * and quant */
            ref_tile = planes[0].bands[0].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;
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                    tile->mb_size  = band->mb_size;
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                    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);
                    tile->mbs = av_malloc(tile->num_MBs * sizeof(IVIMbInfo));
                    if (!tile->mbs)
                        return AVERROR(ENOMEM);

                    tile->ref_mbs = 0;
                    if (p || b) {
                        tile->ref_mbs = ref_tile->mbs;
                        ref_tile++;
                    }

                    tile++;
                }
            }

        }// for b
    }// for p

    return 0;
}

int ff_ivi_dec_tile_data_size(GetBitContext *gb)
{
    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;
}

int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
{
    int         mbn, blk, num_blocks, num_coeffs, blk_size, scan_pos, run, val,
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                pos, is_intra, mc_type = 0, mv_x, mv_y, col_mask;
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    uint8_t     col_flags[8];
    int32_t     prev_dc, trvec[64];
    uint32_t    cbp, sym, lo, hi, quant, buf_offs, q;
    IVIMbInfo   *mb;
    RVMapDesc   *rvmap = band->rv_map;
    void (*mc_with_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
    void (*mc_no_delta_func)  (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type);
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    const uint16_t  *base_tab;
    const uint8_t   *scale_tab;
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    prev_dc = 0; /* init intra prediction for the DC coefficient */

    blk_size   = band->blk_size;
    col_mask   = blk_size - 1; /* column mask for tracking non-zero coeffs */
    num_blocks = (band->mb_size != blk_size) ? 4 : 1; /* number of blocks per mb */
    num_coeffs = blk_size * blk_size;
    if (blk_size == 8) {
        mc_with_delta_func = ff_ivi_mc_8x8_delta;
        mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;
    } else {
        mc_with_delta_func = ff_ivi_mc_4x4_delta;
        mc_no_delta_func   = ff_ivi_mc_4x4_no_delta;
    }

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

        quant = av_clip(band->glob_quant + mb->q_delta, 0, 23);

        base_tab  = is_intra ? band->intra_base  : band->inter_base;
        scale_tab = is_intra ? band->intra_scale : band->inter_scale;
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        if (scale_tab)
            quant = scale_tab[quant];
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        if (!is_intra) {
            mv_x = mb->mv_x;
            mv_y = mb->mv_y;
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            if (band->is_halfpel) {
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                mc_type = ((mv_y & 1) << 1) | (mv_x & 1);
                mv_x >>= 1;
                mv_y >>= 1; /* convert halfpel vectors into fullpel ones */
            }
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            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;

                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;
                }
            }
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        }

        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 ? */
                scan_pos = -1;
                memset(trvec, 0, num_coeffs*sizeof(trvec[0])); /* zero transform vector */
                memset(col_flags, 0, sizeof(col_flags));      /* zero column flags */

                while (scan_pos <= num_coeffs) {
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                    sym = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
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                    if (sym == rvmap->eob_sym)
                        break; /* End of block */

                    if (sym == rvmap->esc_sym) { /* Escape - run/val explicitly coded using 3 vlc codes */
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                        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);
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                        val = IVI_TOSIGNED((hi << 6) | lo); /* merge them and convert into signed val */
                    } else {
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                        if (sym >= 256U) {
                            av_log(NULL, AV_LOG_ERROR, "Invalid sym encountered: %d.\n", sym);
                            return -1;
                        }
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                        run = rvmap->runtab[sym];
                        val = rvmap->valtab[sym];
                    }

                    /* de-zigzag and dequantize */
                    scan_pos += run;
                    if (scan_pos >= num_coeffs)
                        break;
                    pos = band->scan[scan_pos];

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                    if (!val)
                        av_dlog(NULL, "Val = 0 encountered!\n");
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                    q = (base_tab[pos] * quant) >> 9;
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                    if (q > 1)
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                        val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
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                    trvec[pos] = val;
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                    col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */
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                }// while

                if (scan_pos >= num_coeffs && sym != rvmap->eob_sym)
                    return -1; /* 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;
                }

                /* apply inverse transform */
                band->inv_transform(trvec, band->buf + buf_offs,
                                    band->pitch, col_flags);

                /* apply motion compensation */
                if (!is_intra)
                    mc_with_delta_func(band->buf + buf_offs,
                                       band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,
                                       band->pitch, mc_type);
            } else {
                /* block not coded */
                /* for intra blocks apply the dc slant transform */
                /* for inter - perform the motion compensation without delta */
                if (is_intra && band->dc_transform) {
                    band->dc_transform(&prev_dc, band->buf + buf_offs,
                                       band->pitch, blk_size);
                } else
                    mc_no_delta_func(band->buf + buf_offs,
                                     band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,
                                     band->pitch, mc_type);
            }

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

    align_get_bits(gb);

    return 0;
}

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/**
 *  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
 */
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static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
                                  IVITile *tile, int32_t mv_scale)
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{
    int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
    int             offs, mb_offset, row_offset;
    IVIMbInfo       *mb, *ref_mb;
    const int16_t   *src;
    int16_t         *dst;
    void (*mc_no_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch,
                             int mc_type);

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    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",
               tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
        return AVERROR_INVALIDDATA;
    }

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    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;

            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 */
            }

            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);
                mc_no_delta_func(band->buf + offs,
                                 band->ref_buf + offs + mv_y * band->pitch + mv_x,
                                 band->pitch, mc_type);
            }
        }
    } 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;
        }
    }
599 600

    return 0;
601 602 603
}


604
#ifdef DEBUG
605
static uint16_t ivi_calc_band_checksum(IVIBandDesc *band)
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
{
    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

void ff_ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, int dst_pitch)
{
    int             x, y;
    const int16_t   *src  = plane->bands[0].buf;
    uint32_t        pitch = plane->bands[0].pitch;

627 628 629
    if (!src)
        return;

630 631 632 633 634 635 636 637
    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;
    }
}

638 639 640 641 642 643 644 645 646 647 648 649 650 651 652
/**
 *  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
 */
static int decode_band(IVI45DecContext *ctx, int plane_num,
                       IVIBandDesc *band, AVCodecContext *avctx)
{
    int         result, i, t, idx1, idx2, pos;
    IVITile     *tile;

    band->buf     = band->bufs[ctx->dst_buf];
653 654 655 656
    if (!band->buf) {
        av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");
        return AVERROR_INVALIDDATA;
    }
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    band->ref_buf = band->bufs[ctx->ref_buf];
    band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);

    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]);
    }

    pos = get_bits_count(&ctx->gb);

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

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        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;
        }
692 693
        tile->is_empty = get_bits1(&ctx->gb);
        if (tile->is_empty) {
694
            result = ivi_process_empty_tile(avctx, band, tile,
695
                                      (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
696 697
            if (result < 0)
                break;
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            av_dlog(avctx, "Empty tile encountered!\n");
        } else {
            tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);
            if (!tile->data_size) {
                av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
                return AVERROR_INVALIDDATA;
            }

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

            result = ff_ivi_decode_blocks(&ctx->gb, band, tile);
            if (result < 0 || ((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {
                av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n");
                break;
            }

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

    /* restore the selected rvmap table by applying its corrections in reverse order */
    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]);
    }

#ifdef DEBUG
    if (band->checksum_present) {
        uint16_t chksum = ivi_calc_band_checksum(band);
        if (chksum != band->checksum) {
            av_log(avctx, AV_LOG_ERROR,
                   "Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",
                   band->plane, band->band_num, band->checksum, chksum);
        }
    }
#endif

    align_get_bits(&ctx->gb);

    return result;
}

int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
                        AVPacket *avpkt)
{
    IVI45DecContext *ctx = avctx->priv_data;
    const uint8_t   *buf = avpkt->data;
    int             buf_size = avpkt->size;
    int             result, p, b;

    init_get_bits(&ctx->gb, buf, buf_size * 8);
    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);
        return -1;
    }
762 763
    if (ctx->gop_invalid)
        return AVERROR_INVALIDDATA;
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791

    if (ctx->gop_flags & IVI5_IS_PROTECTED) {
        av_log(avctx, AV_LOG_ERROR, "Password-protected clip!\n");
        return -1;
    }

    ctx->switch_buffers(ctx);

    //{ START_TIMER;

    if (ctx->is_nonnull_frame(ctx)) {
        for (p = 0; p < 3; p++) {
            for (b = 0; b < ctx->planes[p].num_bands; b++) {
                result = decode_band(ctx, p, &ctx->planes[p].bands[b], avctx);
                if (result) {
                    av_log(avctx, AV_LOG_ERROR,
                           "Error while decoding band: %d, plane: %d\n", b, p);
                    return -1;
                }
            }
        }
    }

    //STOP_TIMER("decode_planes"); }

    /* 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.     */
792
    if (avctx->codec_id == AV_CODEC_ID_INDEO4 && ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {
793 794 795 796 797 798 799 800 801 802
        while (get_bits(&ctx->gb, 8)); // skip version string
        skip_bits_long(&ctx->gb, 64);  // skip padding, TODO: implement correct 8-bytes alignment
        if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)
            av_log(avctx, AV_LOG_ERROR, "Buffer contains IP frames!\n");
    }

    if (ctx->frame.data[0])
        avctx->release_buffer(avctx, &ctx->frame);

    ctx->frame.reference = 0;
803
    avcodec_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);
804 805 806 807 808 809
    if ((result = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
        return result;
    }

    if (ctx->is_scalable) {
810
        if (avctx->codec_id == AV_CODEC_ID_INDEO4)
811
            ff_ivi_recompose_haar(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
812
        else
813
            ff_ivi_recompose53   (&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842
    } else {
        ff_ivi_output_plane(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
    }

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

    *data_size = sizeof(AVFrame);
    *(AVFrame*)data = ctx->frame;

    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;

    ff_ivi_free_buffers(&ctx->planes[0]);

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

    if (ctx->frame.data[0])
        avctx->release_buffer(avctx, &ctx->frame);

#if IVI4_STREAM_ANALYSER
843
    if (avctx->codec_id == AV_CODEC_ID_INDEO4) {
844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
    if (ctx->is_scalable)
        av_log(avctx, AV_LOG_ERROR, "This video uses scalability mode!\n");
    if (ctx->uses_tiling)
        av_log(avctx, AV_LOG_ERROR, "This video uses local decoding!\n");
    if (ctx->has_b_frames)
        av_log(avctx, AV_LOG_ERROR, "This video contains B-frames!\n");
    if (ctx->has_transp)
        av_log(avctx, AV_LOG_ERROR, "Transparency mode is enabled!\n");
    if (ctx->uses_haar)
        av_log(avctx, AV_LOG_ERROR, "This video uses Haar transform!\n");
    if (ctx->uses_fullpel)
        av_log(avctx, AV_LOG_ERROR, "This video uses fullpel motion vectors!\n");
    }
#endif

    return 0;
}

862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891

/**
 * 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.
 */
const IVIHuffDesc ff_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}}
};

const IVIHuffDesc ff_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}}
};


892 893 894
/**
 *  Scan patterns shared between indeo4 and indeo5
 */
895
const uint8_t ff_ivi_vertical_scan_8x8[64] = {
896 897 898 899 900 901 902 903 904 905
    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
};

906
const uint8_t ff_ivi_horizontal_scan_8x8[64] = {
907 908 909 910 911 912 913 914 915 916
     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
};

917
const uint8_t ff_ivi_direct_scan_4x4[16] = {
918 919 920 921
    0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
};


922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 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
/**
 *  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