static void decode_mb_b(AVSContext *h, enum cavs_mb mb_type) { int block; enum cavs_sub_mb sub_type[4]; int flags; ff_cavs_init_mb(h); /* reset all MVs */ h->mv[MV_FWD_X0] = ff_cavs_dir_mv; set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); h->mv[MV_BWD_X0] = ff_cavs_dir_mv; set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); switch(mb_type) { case B_SKIP: case B_DIRECT: if(!h->col_type_base[h->mbidx]) { /* intra MB at co-location, do in-plane prediction */ ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1); ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0); } else /* direct prediction from co-located P MB, block-wise */ for(block=0;block<4;block++) mv_pred_direct(h,&h->mv[mv_scan[block]], &h->col_mv[h->mbidx*4 + block]); break; case B_FWD_16X16: ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); break; case B_SYM_16X16: ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1); mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16); break; case B_BWD_16X16: ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0); break; case B_8X8: for(block=0;block<4;block++) sub_type[block] = get_bits(&h->s.gb,2); for(block=0;block<4;block++) { switch(sub_type[block]) { case B_SUB_DIRECT: if(!h->col_type_base[h->mbidx]) { /* intra MB at co-location, do in-plane prediction */ ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3, MV_PRED_BSKIP, BLK_8X8, 1); ff_cavs_mv(h, mv_scan[block]+MV_BWD_OFFS, mv_scan[block]-3+MV_BWD_OFFS, MV_PRED_BSKIP, BLK_8X8, 0); } else mv_pred_direct(h,&h->mv[mv_scan[block]], &h->col_mv[h->mbidx*4 + block]); break; case B_SUB_FWD: ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3, MV_PRED_MEDIAN, BLK_8X8, 1); break; case B_SUB_SYM: ff_cavs_mv(h, mv_scan[block], mv_scan[block]-3, MV_PRED_MEDIAN, BLK_8X8, 1); mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8); break; } } for(block=0;block<4;block++) { if(sub_type[block] == B_SUB_BWD) ff_cavs_mv(h, mv_scan[block]+MV_BWD_OFFS, mv_scan[block]+MV_BWD_OFFS-3, MV_PRED_MEDIAN, BLK_8X8, 0); } break; default: av_assert2((mb_type > B_SYM_16X16) && (mb_type < B_8X8)); flags = ff_cavs_partition_flags[mb_type]; if(mb_type & 1) { /* 16x8 macroblock types */ if(flags & FWD0) ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); if(flags & SYM0) mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); if(flags & FWD1) ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); if(flags & SYM1) mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); if(flags & BWD0) ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); if(flags & BWD1) ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0); } else { /* 8x16 macroblock types */ if(flags & FWD0) ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); if(flags & SYM0) mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); if(flags & FWD1) ff_cavs_mv(h,MV_FWD_X1,MV_FWD_C2,MV_PRED_TOPRIGHT,BLK_8X16,1); if(flags & SYM1) mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); if(flags & BWD0) ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); if(flags & BWD1) ff_cavs_mv(h,MV_BWD_X1,MV_BWD_C2,MV_PRED_TOPRIGHT,BLK_8X16,0); } } ff_cavs_inter(h, mb_type); set_intra_mode_default(h); if(mb_type != B_SKIP) decode_residual_inter(h); ff_cavs_filter(h,mb_type); }