v->ac_table_level = decode012(gb);
v->c_ac_table_index = decode012(gb);
static int standard_decode_picture_secondary_header(VC9Context *v){    GetBitContext *gb = &v->s.gb;    int status = 0;    switch (v->s.pict_type)    {    case P_TYPE: status = decode_p_picture_secondary_header(v); break;    case B_TYPE: status = decode_b_picture_secondary_header(v); break;    case BI_TYPE:    case I_TYPE: break; //Nothing needed as it's done in the epilog    }    if (status < 0) return FRAME_SKIPED;    /* AC Syntax */    v->ac_table_level = decode012(gb);    if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)    {        v->ac2_table_level = decode012(gb);    }    /* DC Syntax */    v->s.dc_table_index = decode012(gb);    return 0;}