v->mv_diff_vlc = &vc9_mv_diff_vlc[get_bits(gb, 2)];
v->s.mv_table_index =get_bits(gb, 2);
static int decode_p_picture_secondary_header(VC9Context *v){    GetBitContext *gb = &v->s.gb;    int status = 0;    if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&         v->mv_mode2 == MV_PMODE_MIXED_MV)        || v->mv_mode == MV_PMODE_MIXED_MV)    {        status = bitplane_decoding(&v->mv_type_mb_plane, v);        if (status < 0) return -1;#if TRACE        av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "               "Imode: %i, Invert: %i\n", status>>1, status&1);#endif    }    status = bitplane_decoding(&v->skip_mb_plane, v);    if (status < 0) return -1;#if TRACE    av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "           "Imode: %i, Invert: %i\n", status>>1, status&1);#endif    /* Hopefully this is correct for P frames */    v->mv_diff_vlc = &vc9_mv_diff_vlc[get_bits(gb, 2)];    v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];    if (v->dquant)    {        av_log(v->s.avctx, AV_LOG_INFO, "VOP DQuant info\n");        vop_dquant_decoding(v);    }    if (v->vstransform)    {        v->ttmbf = get_bits(gb, 1);        if (v->ttmbf)        {            v->ttfrm = get_bits(gb, 2);            av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",                   (v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8);        }    }    /* Epilog should be done in caller */    return 0;}