/* Nearly identical to wmv1 but that is just because we do not use the * useless M$ crap features. It is duplicated here in case someone wants * to add support for these crap features. */ void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y) { Wmv2Context *const w = (Wmv2Context *) s; int cbp, coded_cbp, i; int pred_x, pred_y; uint8_t *coded_block; ff_msmpeg4_handle_slices(s); if (!s->mb_intra) { /* compute cbp */ cbp = 0; for (i = 0; i < 6; i++) if (s->block_last_index[i] >= 0) cbp |= 1 << (5 - i); put_bits(&s->pb, ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1], ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][0]); s->misc_bits += get_bits_diff(s); /* motion vector */ ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); ff_msmpeg4_encode_motion(s, motion_x - pred_x, motion_y - pred_y); s->mv_bits += get_bits_diff(s); } else { /* compute cbp */ cbp = 0; coded_cbp = 0; for (i = 0; i < 6; i++) { int val, pred; val = (s->block_last_index[i] >= 1); cbp |= val << (5 - i); if (i < 4) { /* predict value for close blocks only for luma */ pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block); *coded_block = val; val = val ^ pred; } coded_cbp |= val << (5 - i); } if (s->pict_type == AV_PICTURE_TYPE_I) put_bits(&s->pb, ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]); else put_bits(&s->pb, ff_wmv2_inter_table[w->cbp_table_index][cbp][1], ff_wmv2_inter_table[w->cbp_table_index][cbp][0]); put_bits(&s->pb, 1, 0); /* no AC prediction yet */ if (s->inter_intra_pred) { s->h263_aic_dir = 0; put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]); } s->misc_bits += get_bits_diff(s); } for (i = 0; i < 6; i++) ff_msmpeg4_encode_block(s, block[i], i); if (s->mb_intra) s->i_tex_bits += get_bits_diff(s); else s->p_tex_bits += get_bits_diff(s); }
/* Nearly identical to wmv1 but that is just because we do not use the * useless M$ crap features. It is duplicated here in case someone wants * to add support for these crap features. */ void ff_wmv2_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y) { Wmv2Context * const w= (Wmv2Context*)s; int cbp, coded_cbp, i; int pred_x, pred_y; uint8_t *coded_block; ff_msmpeg4_handle_slices(s); if (!s->mb_intra) { /* compute cbp */ cbp = 0; for (i = 0; i < 6; i++) { if (s->block_last_index[i] >= 0) cbp |= 1 << (5 - i); } put_bits(&s->pb, wmv2_inter_table[w->cbp_table_index][cbp + 64][1], wmv2_inter_table[w->cbp_table_index][cbp + 64][0]); /* motion vector */ h263_pred_motion(s, 0, 0, &pred_x, &pred_y); ff_msmpeg4_encode_motion(s, motion_x - pred_x, motion_y - pred_y); } else { /* compute cbp */ cbp = 0; coded_cbp = 0; for (i = 0; i < 6; i++) { int val, pred; val = (s->block_last_index[i] >= 1); cbp |= val << (5 - i); if (i < 4) { /* predict value for close blocks only for luma */ pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block); *coded_block = val; val = val ^ pred; } coded_cbp |= val << (5 - i); } #if 0 if (coded_cbp) printf("cbp=%x %x\n", cbp, coded_cbp); #endif if (s->pict_type == FF_I_TYPE) { put_bits(&s->pb, ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]); } else { put_bits(&s->pb, wmv2_inter_table[w->cbp_table_index][cbp][1], wmv2_inter_table[w->cbp_table_index][cbp][0]); } put_bits(&s->pb, 1, 0); /* no AC prediction yet */ if(s->inter_intra_pred){ s->h263_aic_dir=0; put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]); } } for (i = 0; i < 6; i++) { ff_msmpeg4_encode_block(s, block[i], i); } }