uint32_t * const mb_type_ptr= &v->s.current_picture.mb_type[ v->s.mb_x + v->s.mb_y*v->s.mb_stride ];
int vc9_decode_i_mb(VC9Context *v, DCTELEM block[6][64]){    int i, cbp, val;    uint8_t *coded_val;    uint32_t * const mb_type_ptr= &v->s.current_picture.mb_type[ v->s.mb_x + v->s.mb_y*v->s.mb_stride ];    v->s.mb_intra = 1;    cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);    if (cbp < 0) return -1;    v->s.ac_pred = get_bits(&v->s.gb, 1);    for (i=0; i<6; i++)    {        val = ((cbp >> (5 - i)) & 1);        if (i < 4) {            int pred = vc9_coded_block_pred(&v->s, i, &coded_val);            val = val ^ pred;            *coded_val = val;        }        cbp |= val << (5 - i);        if (vc9_decode_block(v, block[i], i, val, v->pq) < 0) //FIXME Should be mquant        {            av_log(v->s.avctx, AV_LOG_ERROR,                   "\nerror while decoding block: %d x %d (%d)\n", v->s.mb_x, v->s.mb_y, i);            return -1;        }    }    return 0;}