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ffmpeg.wasm-core
Commit c453da33 authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge commit '1fb013a5' 

* commit '1fb013a5':
  vc1dec: Add support for interlaced B-frames

Conflicts:
	libavcodec/vc1dec.c
Merged-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parents 28e6b7b9 1fb013a5
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Showing with 17 additions and 24 deletions
libavcodec/vc1dec.c
View file @ c453da33
......@@ -4413,8 +4413,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
if (!skipped) {
idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD)
{
if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
twomv = 1;
v->blk_mv_type[s->block_index[0]] = 1;
v->blk_mv_type[s->block_index[1]] = 1;
......@@ -4445,7 +4444,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
s->mv[1][2][0] = s->current_picture.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample);
s->mv[1][2][1] = s->current_picture.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample);
for (i = 1; i < 4; i+=2) {
for (i = 1; i < 4; i += 2) {
s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0];
s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1];
s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0];
......@@ -4468,7 +4467,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
}
s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
s->mb_intra = v->is_intra[s->mb_x] = 1;
for (i = 0; i < 6; i++)
v->mb_type[0][s->block_index[i]] = 1;
......@@ -4496,7 +4495,8 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
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;
if (i > 3 && (s->flags & CODEC_FLAG_GRAY))
continue;
v->vc1dsp.vc1_inv_trans_8x8(s->block[i]);
if (i < 4) {
stride_y = s->linesize << fieldtx;
......@@ -4535,8 +4535,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
if (!direct) {
if (bmvtype == BMV_TYPE_INTERPOLATED & twomv) {
v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
}
else if (bmvtype == BMV_TYPE_INTERPOLATED | twomv) {
} else if (bmvtype == BMV_TYPE_INTERPOLATED | twomv) {
v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
}
}
......@@ -4564,9 +4563,8 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
dir = i==1 || i==3;
dmv_x = dmv_y = 0;
val = ((mvbp >> (3 - i)) & 1);
if (val) {
if (val)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
j = i > 1 ? 2 : 0;
vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
vc1_mc_4mv_luma(v, j, dir, dir);
......@@ -4578,17 +4576,15 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
} else if (bmvtype == BMV_TYPE_INTERPOLATED) {
mvbp = v->twomvbp;
dmv_x = dmv_y = 0;
if (mvbp & 2) {
if (mvbp & 2)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0);
vc1_mc_1mv(v, 0);
dmv_x = dmv_y = 0;
if (mvbp & 1) {
if (mvbp & 1)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 1);
vc1_interp_mc(v);
......@@ -4599,19 +4595,17 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
dir2 = !dir;
mvbp = v->twomvbp;
dmv_x = dmv_y = 0;
if (mvbp & 2) {
if (mvbp & 2)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir);
dmv_x = dmv_y = 0;
if (mvbp & 1) {
if (mvbp & 1)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir2);
if (mvsw) {
for (i = 0; i<2; i++) {
for (i = 0; i < 2; i++) {
s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
......@@ -4632,9 +4626,8 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
dmv_x = dmv_y = 0;
if (mvbp) {
if (mvbp)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], dir);
v->blk_mv_type[s->block_index[0]] = 1;
......@@ -4642,7 +4635,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
v->blk_mv_type[s->block_index[2]] = 1;
v->blk_mv_type[s->block_index[3]] = 1;
vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
for (i = 0; i<2; i++) {
for (i = 0; i < 2; i++) {
s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
}
......@@ -4698,7 +4691,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
int dir2 = dir;
if (mvsw)
dir2 = !dir;
for (i = 0; i<2; i++) {
for (i = 0; i < 2; i++) {
s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0];
s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1];
s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0];
......@@ -4710,7 +4703,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
v->blk_mv_type[s->block_index[2]] = 1;
v->blk_mv_type[s->block_index[3]] = 1;
vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir);
for (i = 0; i<2; i++) {
for (i = 0; i < 2; i++) {
s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0];
s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1];
}
......@@ -4725,7 +4718,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
}
}
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);
memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride);
v->cbp[s->mb_x] = block_cbp;
v->ttblk[s->mb_x] = block_tt;
return 0;
......
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