static int vc1_decode_p_mb_intfi(VC1Context *v) { MpegEncContext *s = &v->s; GetBitContext *gb = &s->gb; int i; int mb_pos = s->mb_x + s->mb_y * s->mb_stride; int cbp = 0; /* cbp decoding stuff */ int mqdiff, mquant; /* MB quantization */ int ttmb = v->ttfrm; /* MB Transform type */ int mb_has_coeffs = 1; /* last_flag */ int dmv_x, dmv_y; /* Differential MV components */ int val; /* temp values */ int first_block = 1; int dst_idx, off; int pred_flag = 0; int block_cbp = 0, pat, block_tt = 0; int idx_mbmode = 0; mquant = v->pq; /* Lossy initialization */ idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); if (idx_mbmode <= 1) { // intra MB v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. s->mb_intra = 1; s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0; s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0; s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; GET_MQUANT(); s->current_picture.qscale_table[mb_pos] = mquant; /* Set DC scale - y and c use the same (not sure if necessary here) */ s->y_dc_scale = s->y_dc_scale_table[mquant]; s->c_dc_scale = s->c_dc_scale_table[mquant]; v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); mb_has_coeffs = idx_mbmode & 1; if (mb_has_coeffs) cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2); dst_idx = 0; for (i = 0; i < 6; i++) { v->a_avail = v->c_avail = 0; v->mb_type[0][s->block_index[i]] = 1; s->dc_val[0][s->block_index[i]] = 0; dst_idx += i >> 2; val = ((cbp >> (5 - i)) & 1); if (i == 2 || i == 3 || !s->first_slice_line) v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; if (i == 1 || i == 3 || s->mb_x) v->c_avail = v->mb_type[0][s->block_index[i] - 1]; vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i & 4) ? v->codingset2 : v->codingset); if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); s->idsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize); // TODO: loop filter } } else { s->mb_intra = v->is_intra[s->mb_x] = 0; s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16; for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0; if (idx_mbmode <= 5) { // 1-MV dmv_x = dmv_y = pred_flag = 0; if (idx_mbmode & 1) { get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); } ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); ff_vc1_mc_1mv(v, 0); mb_has_coeffs = !(idx_mbmode & 2); } else { // 4-MV v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); for (i = 0; i < 6; i++) { if (i < 4) { dmv_x = dmv_y = pred_flag = 0; val = ((v->fourmvbp >> (3 - i)) & 1); if (val) { get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); } ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); ff_vc1_mc_4mv_luma(v, i, 0, 0); } else if (i == 4) ff_vc1_mc_4mv_chroma(v, 0); } mb_has_coeffs = idx_mbmode & 1; } if (mb_has_coeffs) cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); if (cbp) { GET_MQUANT(); } s->current_picture.qscale_table[mb_pos] = mquant; if (!v->ttmbf && cbp) { ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); } dst_idx = 0; for (i = 0; i < 6; i++) { s->dc_val[0][s->block_index[i]] = 0; dst_idx += i >> 2; val = ((cbp >> (5 - i)) & 1); off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize; if (val) { pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize, (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); block_cbp |= pat << (i << 2); if (!v->ttmbf && ttmb < 8) ttmb = -1; first_block = 0; } } } if (s->mb_x == s->mb_width - 1) memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); return 0; }
static int vc1_decode_p_mb_intfi(VC1Context *v) { MpegEncContext *s = &v->s; GetBitContext *gb = &s->gb; int i; int mb_pos = s->mb_x + s->mb_y * s->mb_stride; int cbp = 0;   int mqdiff, mquant;   int ttmb = v->ttfrm;   int mb_has_coeffs = 1;   int dmv_x, dmv_y;   int val;   int first_block = 1; int dst_idx, off; int pred_flag = 0; int block_cbp = 0, pat, block_tt = 0; int idx_mbmode = 0; mquant = v->pq;   idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); if (idx_mbmode <= 1) {  