int ff_msmpeg4_decode_init(MpegEncContext *s) { static int done = 0; int i; MVTable *mv; common_init(s); if (!done) { done = 1; for(i=0;i<NB_RL_TABLES;i++) { init_rl(&rl_table[i]); init_vlc_rl(&rl_table[i]); } for(i=0;i<2;i++) { mv = &mv_tables[i]; init_vlc(&mv->vlc, MV_VLC_BITS, mv->n + 1, mv->table_mv_bits, 1, 1, mv->table_mv_code, 2, 2); } init_vlc(&dc_lum_vlc[0], DC_VLC_BITS, 120, &table0_dc_lum[0][1], 8, 4, &table0_dc_lum[0][0], 8, 4); init_vlc(&dc_chroma_vlc[0], DC_VLC_BITS, 120, &table0_dc_chroma[0][1], 8, 4, &table0_dc_chroma[0][0], 8, 4); init_vlc(&dc_lum_vlc[1], DC_VLC_BITS, 120, &table1_dc_lum[0][1], 8, 4, &table1_dc_lum[0][0], 8, 4); init_vlc(&dc_chroma_vlc[1], DC_VLC_BITS, 120, &table1_dc_chroma[0][1], 8, 4, &table1_dc_chroma[0][0], 8, 4); init_vlc(&v2_dc_lum_vlc, DC_VLC_BITS, 512, &v2_dc_lum_table[0][1], 8, 4, &v2_dc_lum_table[0][0], 8, 4); init_vlc(&v2_dc_chroma_vlc, DC_VLC_BITS, 512, &v2_dc_chroma_table[0][1], 8, 4, &v2_dc_chroma_table[0][0], 8, 4); init_vlc(&cbpy_vlc, CBPY_VLC_BITS, 16, &cbpy_tab[0][1], 2, 1, &cbpy_tab[0][0], 2, 1); init_vlc(&v2_intra_cbpc_vlc, V2_INTRA_CBPC_VLC_BITS, 4, &v2_intra_cbpc[0][1], 2, 1, &v2_intra_cbpc[0][0], 2, 1); init_vlc(&v2_mb_type_vlc, V2_MB_TYPE_VLC_BITS, 8, &v2_mb_type[0][1], 2, 1, &v2_mb_type[0][0], 2, 1); init_vlc(&v2_mv_vlc, V2_MV_VLC_BITS, 33, &mvtab[0][1], 2, 1, &mvtab[0][0], 2, 1); for(i=0; i<4; i++){ init_vlc(&mb_non_intra_vlc[i], MB_NON_INTRA_VLC_BITS, 128, &wmv2_inter_table[i][0][1], 8, 4, &wmv2_inter_table[i][0][0], 8, 4); //FIXME name? } init_vlc(&mb_intra_vlc, MB_INTRA_VLC_BITS, 64, &table_mb_intra[0][1], 4, 2, &table_mb_intra[0][0], 4, 2); init_vlc(&v1_intra_cbpc_vlc, V1_INTRA_CBPC_VLC_BITS, 8, intra_MCBPC_bits, 1, 1, intra_MCBPC_code, 1, 1); init_vlc(&v1_inter_cbpc_vlc, V1_INTER_CBPC_VLC_BITS, 25, inter_MCBPC_bits, 1, 1, inter_MCBPC_code, 1, 1); init_vlc(&inter_intra_vlc, INTER_INTRA_VLC_BITS, 4, &table_inter_intra[0][1], 2, 1, &table_inter_intra[0][0], 2, 1); } switch(s->msmpeg4_version){ case 1: case 2: s->decode_mb= msmpeg4v12_decode_mb; break; case 3: case 4: s->decode_mb= msmpeg4v34_decode_mb; break; case 5: s->decode_mb= wmv2_decode_mb; break; } s->slice_height= s->mb_height; //to avoid 1/0 if the first frame isnt a keyframe return 0; }