int wrap = s->block_wrap[0];
int wrap = s->b8_stride;
void ff_clean_intra_table_entries(MpegEncContext *s){    int wrap = s->block_wrap[0];    int xy = s->block_index[0];        s->dc_val[0][xy           ] =     s->dc_val[0][xy + 1       ] =     s->dc_val[0][xy     + wrap] =    s->dc_val[0][xy + 1 + wrap] = 1024;    /* ac pred */    memset(s->ac_val[0][xy       ], 0, 32 * sizeof(int16_t));    memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));    if (s->msmpeg4_version>=3) {        s->coded_block[xy           ] =        s->coded_block[xy + 1       ] =        s->coded_block[xy     + wrap] =        s->coded_block[xy + 1 + wrap] = 0;    }    /* chroma */    wrap = s->block_wrap[4];    xy = s->mb_x + 1 + (s->mb_y + 1) * wrap;    s->dc_val[1][xy] =    s->dc_val[2][xy] = 1024;    /* ac pred */    memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));    memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));        s->mbintra_table[s->mb_x + s->mb_y*s->mb_stride]= 0;}