static int decode_mb_info(IVI5DecContext *ctx, IVIBandDesc *band,
                          IVITile *tile, AVCodecContext *avctx)
{
    int         x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
                mv_scale, blks_per_mb;
    IVIMbInfo   *mb, *ref_mb;
    int         row_offset = band->mb_size * band->pitch;
    mb     = tile->mbs;
    ref_mb = tile->ref_mbs;
    offs   = tile->ypos * band->pitch + tile->xpos;
    /* scale factor for motion vectors */
    mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
    mv_x = mv_y = 0;
    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;
            if (get_bits1(&ctx->gb)) {
                if (ctx->frame_type == FRAMETYPE_INTRA) {
                    av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
                    return -1;
                }
                mb->type = 1; /* empty macroblocks are always INTER */
                mb->cbp  = 0; /* all blocks are empty */
                mb->q_delta = 0;
                if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) {
                    mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                           IVI_VLC_BITS, 1);
                    mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                }
                mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
                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;
                    }
                }
            } else {
                if (band->inherit_mv) {
                    mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */
                } else if (ctx->frame_type == FRAMETYPE_INTRA) {
                    mb->type = 0; /* mb_type is always INTRA for intra-frames */
                } else {
                    mb->type = get_bits1(&ctx->gb);
                }
                blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
                mb->cbp = get_bits(&ctx->gb, blks_per_mb);
                mb->q_delta = 0;
                if (band->qdelta_present) {
                    if (band->inherit_qdelta) {
                        if (ref_mb) mb->q_delta = ref_mb->q_delta;
                    } else if (mb->cbp || (!band->plane && !band->band_num &&
                                           (ctx->frame_flags & 8))) {
                        mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                               IVI_VLC_BITS, 1);
                        mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                    }
                }
                if (!mb->type) {
                    mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
                } else {
                    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;
                        }
                    } else {
                        /* decode motion vector deltas */
                        mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        mv_y += IVI_TOSIGNED(mv_delta);
                        mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        mv_x += IVI_TOSIGNED(mv_delta);
                        mb->mv_x = mv_x;
                        mb->mv_y = mv_y;
                    }
                }
            }
            mb++;
            if (ref_mb)
                ref_mb++;
            mb_offset += band->mb_size;
        }
        offs += row_offset;
    }
    align_get_bits(&ctx->gb);
    return 0;
}
static int decode_mb_info(IVI5DecContext *ctx, IVIBandDesc *band,
                          IVITile *tile, AVCodecContext *avctx)
{
    int         x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
                mv_scale, blks_per_mb;
    IVIMbInfo   *mb, *ref_mb;
    int         row_offset = band->mb_size * band->pitch;
    mb     = tile->mbs;
    ref_mb = tile->ref_mbs;
    offs   = tile->ypos * band->pitch + tile->xpos;
    
    mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
    mv_x = mv_y = 0;
    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;
            if (get_bits1(&ctx->gb)) {
                if (ctx->frame_type == FRAMETYPE_INTRA) {
                    av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
                    return -1;
                }
                mb->type = 1; 
                mb->cbp  = 0; 
                mb->q_delta = 0;
                if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) {
                    mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                           IVI_VLC_BITS, 1);
                    mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                }
                mb->mv_x = mb->mv_y = 0; 
                if (band->inherit_mv){
                    
                    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;
                    }
                }
            } else {
                if (band->inherit_mv) {
                    mb->type = ref_mb->type; 
                } else if (ctx->frame_type == FRAMETYPE_INTRA) {
                    mb->type = 0; 
                } else {
                    mb->type = get_bits1(&ctx->gb);
                }
                blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
                mb->cbp = get_bits(&ctx->gb, blks_per_mb);
                mb->q_delta = 0;
                if (band->qdelta_present) {
                    if (band->inherit_qdelta) {
                        if (ref_mb) mb->q_delta = ref_mb->q_delta;
                    } else if (mb->cbp || (!band->plane && !band->band_num &&
                                           (ctx->frame_flags & 8))) {
                        mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                               IVI_VLC_BITS, 1);
                        mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                    }
                }
                if (!mb->type) {
                    mb->mv_x = mb->mv_y = 0; 
                } else {
                    if (band->inherit_mv){
                        
                        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;
                        }
                    } else {
                        
                        mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        mv_y += IVI_TOSIGNED(mv_delta);
                        mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        mv_x += IVI_TOSIGNED(mv_delta);
                        mb->mv_x = mv_x;
                        mb->mv_y = mv_y;
                    }
                }
            }
            mb++;
            if (ref_mb)
                ref_mb++;
            mb_offset += band->mb_size;
        }
        offs += row_offset;
    }
    align_get_bits(&ctx->gb);
    return 0;
}
static int FUNC_0(IVI5DecContext *VAR_0, IVIBandDesc *VAR_1,
                          IVITile *VAR_2, AVCodecContext *VAR_3)
{
    int         VAR_4, VAR_5, VAR_6, VAR_7, VAR_8, VAR_9, VAR_10,
                VAR_11, VAR_12;
    IVIMbInfo   *mb, *ref_mb;
    int         VAR_13 = VAR_1->mb_size * VAR_1->pitch;
    mb     = VAR_2->mbs;
    ref_mb = VAR_2->ref_mbs;
    VAR_9   = VAR_2->ypos * VAR_1->pitch + VAR_2->xpos;
    
    VAR_11 = (VAR_0->planes[0].bands[0].mb_size >> 3) - (VAR_1->mb_size >> 3);
    VAR_6 = VAR_7 = 0;
    for (VAR_5 = VAR_2->ypos; VAR_5 < (VAR_2->ypos + VAR_2->height); VAR_5 += VAR_1->mb_size) {
        VAR_10 = VAR_9;
        for (VAR_4 = VAR_2->xpos; VAR_4 < (VAR_2->xpos + VAR_2->width); VAR_4 += VAR_1->mb_size) {
            mb->xpos     = VAR_4;
            mb->ypos     = VAR_5;
            mb->buf_offs = VAR_10;
            if (get_bits1(&VAR_0->gb)) {
                if (VAR_0->frame_type == FRAMETYPE_INTRA) {
                    av_log(VAR_3, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
                    return -1;
                }
                mb->type = 1; 
                mb->cbp  = 0; 
                mb->q_delta = 0;
                if (!VAR_1->plane && !VAR_1->band_num && (VAR_0->frame_flags & 8)) {
                    mb->q_delta = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
                                           IVI_VLC_BITS, 1);
                    mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                }
                mb->VAR_6 = mb->VAR_7 = 0; 
                if (VAR_1->inherit_mv){
                    
                    if (VAR_11) {
                        mb->VAR_6 = ivi_scale_mv(ref_mb->VAR_6, VAR_11);
                        mb->VAR_7 = ivi_scale_mv(ref_mb->VAR_7, VAR_11);
                    } else {
                        mb->VAR_6 = ref_mb->VAR_6;
                        mb->VAR_7 = ref_mb->VAR_7;
                    }
                }
            } else {
                if (VAR_1->inherit_mv) {
                    mb->type = ref_mb->type; 
                } else if (VAR_0->frame_type == FRAMETYPE_INTRA) {
                    mb->type = 0; 
                } else {
                    mb->type = get_bits1(&VAR_0->gb);
                }
                VAR_12 = VAR_1->mb_size != VAR_1->blk_size ? 4 : 1;
                mb->cbp = get_bits(&VAR_0->gb, VAR_12);
                mb->q_delta = 0;
                if (VAR_1->qdelta_present) {
                    if (VAR_1->inherit_qdelta) {
                        if (ref_mb) mb->q_delta = ref_mb->q_delta;
                    } else if (mb->cbp || (!VAR_1->plane && !VAR_1->band_num &&
                                           (VAR_0->frame_flags & 8))) {
                        mb->q_delta = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
                                               IVI_VLC_BITS, 1);
                        mb->q_delta = IVI_TOSIGNED(mb->q_delta);
                    }
                }
                if (!mb->type) {
                    mb->VAR_6 = mb->VAR_7 = 0; 
                } else {
                    if (VAR_1->inherit_mv){
                        
                        if (VAR_11) {
                            mb->VAR_6 = ivi_scale_mv(ref_mb->VAR_6, VAR_11);
                            mb->VAR_7 = ivi_scale_mv(ref_mb->VAR_7, VAR_11);
                        } else {
                            mb->VAR_6 = ref_mb->VAR_6;
                            mb->VAR_7 = ref_mb->VAR_7;
                        }
                    } else {
                        
                        VAR_8 = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        VAR_7 += IVI_TOSIGNED(VAR_8);
                        VAR_8 = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
                                            IVI_VLC_BITS, 1);
                        VAR_6 += IVI_TOSIGNED(VAR_8);
                        mb->VAR_6 = VAR_6;
                        mb->VAR_7 = VAR_7;
                    }
                }
            }
            mb++;
            if (ref_mb)
                ref_mb++;
            VAR_10 += VAR_1->mb_size;
        }
        VAR_9 += VAR_13;
    }
    align_get_bits(&VAR_0->gb);
    return 0;
}
static int FUNC_0(IVI5DecContext *VAR_0, IVIBandDesc *VAR_1,
IVITile *VAR_2, AVCodecContext *VAR_3)
{ int         VAR_4, VAR_5, VAR_6, VAR_7, VAR_8, VAR_9, VAR_10,
VAR_11, VAR_12; IVIMbInfo   *mb, *ref_mb; int         VAR_13 = VAR_1->mb_size * VAR_1->pitch; mb     = VAR_2->mbs; ref_mb = VAR_2->ref_mbs; VAR_9   = VAR_2->ypos * VAR_1->pitch + VAR_2->xpos; VAR_11 = (VAR_0->planes[0].bands[0].mb_size >> 3) - (VAR_1->mb_size >> 3); VAR_6 = VAR_7 = 0; for (VAR_5 = VAR_2->ypos; VAR_5 < (VAR_2->ypos + VAR_2->height); VAR_5 += VAR_1->mb_size) { VAR_10 = VAR_9; for (VAR_4 = VAR_2->xpos; VAR_4 < (VAR_2->xpos + VAR_2->width); VAR_4 += VAR_1->mb_size) { mb->xpos     = VAR_4; mb->ypos     = VAR_5; mb->buf_offs = VAR_10; if (get_bits1(&VAR_0->gb)) { if (VAR_0->frame_type == FRAMETYPE_INTRA) { av_log(VAR_3, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n"); return -1; } mb->type = 1; mb->cbp  = 0; mb->q_delta = 0; if (!VAR_1->plane && !VAR_1->band_num && (VAR_0->frame_flags & 8)) { mb->q_delta = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
IVI_VLC_BITS, 1); mb->q_delta = IVI_TOSIGNED(mb->q_delta); } mb->VAR_6 = mb->VAR_7 = 0; if (VAR_1->inherit_mv){ if (VAR_11) { mb->VAR_6 = ivi_scale_mv(ref_mb->VAR_6, VAR_11); mb->VAR_7 = ivi_scale_mv(ref_mb->VAR_7, VAR_11); } else { mb->VAR_6 = ref_mb->VAR_6; mb->VAR_7 = ref_mb->VAR_7; } } } else { if (VAR_1->inherit_mv) { mb->type = ref_mb->type; } else if (VAR_0->frame_type == FRAMETYPE_INTRA) { mb->type = 0; } else { mb->type = get_bits1(&VAR_0->gb); } VAR_12 = VAR_1->mb_size != VAR_1->blk_size ? 4 : 1; mb->cbp = get_bits(&VAR_0->gb, VAR_12); mb->q_delta = 0; if (VAR_1->qdelta_present) { if (VAR_1->inherit_qdelta) { if (ref_mb) mb->q_delta = ref_mb->q_delta; } else if (mb->cbp || (!VAR_1->plane && !VAR_1->band_num && (VAR_0->frame_flags & 8))) { mb->q_delta = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
IVI_VLC_BITS, 1); mb->q_delta = IVI_TOSIGNED(mb->q_delta); } } if (!mb->type) { mb->VAR_6 = mb->VAR_7 = 0; } else { if (VAR_1->inherit_mv){ if (VAR_11) { mb->VAR_6 = ivi_scale_mv(ref_mb->VAR_6, VAR_11); mb->VAR_7 = ivi_scale_mv(ref_mb->VAR_7, VAR_11); } else { mb->VAR_6 = ref_mb->VAR_6; mb->VAR_7 = ref_mb->VAR_7; } } else { VAR_8 = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
IVI_VLC_BITS, 1); VAR_7 += IVI_TOSIGNED(VAR_8); VAR_8 = get_vlc2(&VAR_0->gb, VAR_0->mb_vlc.tab->table,
IVI_VLC_BITS, 1); VAR_6 += IVI_TOSIGNED(VAR_8); mb->VAR_6 = VAR_6; mb->VAR_7 = VAR_7; } } } mb++; if (ref_mb)
ref_mb++; VAR_10 += VAR_1->mb_size; } VAR_9 += VAR_13; } align_get_bits(&VAR_0->gb); return 0; }