[FFmpeg-cvslog] vc1dec: Add support for interlaced B-frames
Sebastian Sandberg
git at videolan.org
Fri May 17 10:34:39 CEST 2013
ffmpeg | branch: master | Sebastian Sandberg <sebastiand.sandberg at gmail.com> | Thu Jan 31 18:04:22 2013 +0100| [1fb013a57c6d98d3f425506eb25f32b2cf7ddc6f] | committer: Martin Storsjö
vc1dec: Add support for interlaced B-frames
Signed-off-by: Martin Storsjö <martin at martin.st>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1fb013a57c6d98d3f425506eb25f32b2cf7ddc6f
---
libavcodec/vc1dec.c | 466 +++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 411 insertions(+), 55 deletions(-)
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index ea08bdd..a1c9890 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -347,6 +347,7 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
uint8_t *srcY, *srcU, *srcV;
int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
int v_edge_pos = s->v_edge_pos >> v->field_mode;
+ int i;
if ((!v->field_mode ||
(v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
@@ -358,8 +359,10 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
// store motion vectors for further use in B frames
if (s->pict_type == AV_PICTURE_TYPE_P) {
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = mx;
- s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = my;
+ for (i = 0; i < 4; i++) {
+ s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
+ s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
+ }
}
uvmx = (mx + ((mx & 3) == 3)) >> 1;
@@ -533,7 +536,7 @@ static inline int median4(int a, int b, int c, int d)
/** Do motion compensation for 4-MV macroblock - luminance block
*/
-static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir)
+static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
{
MpegEncContext *s = &v->s;
uint8_t *srcY;
@@ -601,6 +604,10 @@ static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir)
int qx, qy;
int width = s->avctx->coded_width;
int height = s->avctx->coded_height >> 1;
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
+ s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
+ s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
+ }
qx = (s->mb_x * 16) + (mx >> 2);
qy = (s->mb_y * 8) + (my >> 3);
@@ -688,7 +695,10 @@ static void vc1_mc_4mv_luma(VC1Context *v, int n, int dir)
if (s->mspel) {
dxy = ((my & 3) << 2) | (mx & 3);
- v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
+ if (avg)
+ v->vc1dsp.avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
+ else
+ v->vc1dsp.put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
} else { // hpel mc - always used for luma
dxy = (my & 2) | ((mx & 2) >> 1);
if (!v->rnd)
@@ -1583,7 +1593,7 @@ static inline void vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
/** Predict and set motion vector for interlaced frame picture MBs
*/
static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
- int mvn, int r_x, int r_y, uint8_t* is_intra)
+ int mvn, int r_x, int r_y, uint8_t* is_intra, int dir)
{
MpegEncContext *s = &v->s;
int xy, wrap, off = 0;
@@ -1625,14 +1635,14 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
if (s->mb_x || (n == 1) || (n == 3)) {
if ((v->blk_mv_type[xy]) // current block (MB) has a field MV
|| (!v->blk_mv_type[xy] && !v->blk_mv_type[xy - 1])) { // or both have frame MV
- A[0] = s->current_picture.motion_val[0][xy - 1][0];
- A[1] = s->current_picture.motion_val[0][xy - 1][1];
+ A[0] = s->current_picture.motion_val[dir][xy - 1][0];
+ A[1] = s->current_picture.motion_val[dir][xy - 1][1];
a_valid = 1;
} else { // current block has frame mv and cand. has field MV (so average)
- A[0] = (s->current_picture.motion_val[0][xy - 1][0]
- + s->current_picture.motion_val[0][xy - 1 + off * wrap][0] + 1) >> 1;
- A[1] = (s->current_picture.motion_val[0][xy - 1][1]
- + s->current_picture.motion_val[0][xy - 1 + off * wrap][1] + 1) >> 1;
+ A[0] = (s->current_picture.motion_val[dir][xy - 1][0]
+ + s->current_picture.motion_val[dir][xy - 1 + off * wrap][0] + 1) >> 1;
+ A[1] = (s->current_picture.motion_val[dir][xy - 1][1]
+ + s->current_picture.motion_val[dir][xy - 1 + off * wrap][1] + 1) >> 1;
a_valid = 1;
}
if (!(n & 1) && v->is_intra[s->mb_x - 1]) {
@@ -1652,11 +1662,11 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
if (v->blk_mv_type[pos_b] && v->blk_mv_type[xy]) {
n_adj = (n & 2) | (n & 1);
}
- B[0] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap][0];
- B[1] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap][1];
+ B[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][0];
+ B[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap][1];
if (v->blk_mv_type[pos_b] && !v->blk_mv_type[xy]) {
- B[0] = (B[0] + s->current_picture.motion_val[0][s->block_index[n_adj ^ 2] - 2 * wrap][0] + 1) >> 1;
- B[1] = (B[1] + s->current_picture.motion_val[0][s->block_index[n_adj ^ 2] - 2 * wrap][1] + 1) >> 1;
+ B[0] = (B[0] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][0] + 1) >> 1;
+ B[1] = (B[1] + s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap][1] + 1) >> 1;
}
}
if (s->mb_width > 1) {
@@ -1667,11 +1677,11 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
n_adj = n & 2;
}
- C[0] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap + 2][0];
- C[1] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap + 2][1];
+ C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][0];
+ C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap + 2][1];
if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
- C[0] = (1 + C[0] + (s->current_picture.motion_val[0][s->block_index[n_adj ^ 2] - 2 * wrap + 2][0])) >> 1;
- C[1] = (1 + C[1] + (s->current_picture.motion_val[0][s->block_index[n_adj ^ 2] - 2 * wrap + 2][1])) >> 1;
+ C[0] = (1 + C[0] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][0])) >> 1;
+ C[1] = (1 + C[1] + (s->current_picture.motion_val[dir][s->block_index[n_adj ^ 2] - 2 * wrap + 2][1])) >> 1;
}
if (s->mb_x == s->mb_width - 1) {
if (!v->is_intra[s->mb_x - s->mb_stride - 1]) {
@@ -1681,11 +1691,11 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
if (v->blk_mv_type[pos_c] && v->blk_mv_type[xy]) {
n_adj = n | 1;
}
- C[0] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap - 2][0];
- C[1] = s->current_picture.motion_val[0][s->block_index[n_adj] - 2 * wrap - 2][1];
+ C[0] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][0];
+ C[1] = s->current_picture.motion_val[dir][s->block_index[n_adj] - 2 * wrap - 2][1];
if (v->blk_mv_type[pos_c] && !v->blk_mv_type[xy]) {
- C[0] = (1 + C[0] + s->current_picture.motion_val[0][s->block_index[1] - 2 * wrap - 2][0]) >> 1;
- C[1] = (1 + C[1] + s->current_picture.motion_val[0][s->block_index[1] - 2 * wrap - 2][1]) >> 1;
+ C[0] = (1 + C[0] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][0]) >> 1;
+ C[1] = (1 + C[1] + s->current_picture.motion_val[dir][s->block_index[1] - 2 * wrap - 2][1]) >> 1;
}
} else
c_valid = 0;
@@ -1696,12 +1706,12 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
} else {
pos_b = s->block_index[1];
b_valid = 1;
- B[0] = s->current_picture.motion_val[0][pos_b][0];
- B[1] = s->current_picture.motion_val[0][pos_b][1];
+ B[0] = s->current_picture.motion_val[dir][pos_b][0];
+ B[1] = s->current_picture.motion_val[dir][pos_b][1];
pos_c = s->block_index[0];
c_valid = 1;
- C[0] = s->current_picture.motion_val[0][pos_c][0];
- C[1] = s->current_picture.motion_val[0][pos_c][1];
+ C[0] = s->current_picture.motion_val[dir][pos_c][0];
+ C[1] = s->current_picture.motion_val[dir][pos_c][1];
}
total_valid = a_valid + b_valid + c_valid;
@@ -1789,20 +1799,20 @@ static inline void vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
}
/* store MV using signed modulus of MV range defined in 4.11 */
- s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
- s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
+ s->mv[dir][n][0] = s->current_picture.motion_val[dir][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
+ s->mv[dir][n][1] = s->current_picture.motion_val[dir][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
if (mvn == 1) { /* duplicate motion data for 1-MV block */
- s->current_picture.motion_val[0][xy + 1 ][0] = s->current_picture.motion_val[0][xy][0];
- s->current_picture.motion_val[0][xy + 1 ][1] = s->current_picture.motion_val[0][xy][1];
- s->current_picture.motion_val[0][xy + wrap ][0] = s->current_picture.motion_val[0][xy][0];
- s->current_picture.motion_val[0][xy + wrap ][1] = s->current_picture.motion_val[0][xy][1];
- s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
- s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
+ s->current_picture.motion_val[dir][xy + 1 ][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + 1 ][1] = s->current_picture.motion_val[dir][xy][1];
+ s->current_picture.motion_val[dir][xy + wrap ][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + wrap ][1] = s->current_picture.motion_val[dir][xy][1];
+ s->current_picture.motion_val[dir][xy + wrap + 1][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + wrap + 1][1] = s->current_picture.motion_val[dir][xy][1];
} else if (mvn == 2) { /* duplicate motion data for 2-Field MV block */
- s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
- s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
- s->mv[0][n + 1][0] = s->mv[0][n][0];
- s->mv[0][n + 1][1] = s->mv[0][n][1];
+ s->current_picture.motion_val[dir][xy + 1][0] = s->current_picture.motion_val[dir][xy][0];
+ s->current_picture.motion_val[dir][xy + 1][1] = s->current_picture.motion_val[dir][xy][1];
+ s->mv[dir][n + 1][0] = s->mv[dir][n][0];
+ s->mv[dir][n + 1][1] = s->mv[dir][n][1];
}
}
@@ -3548,7 +3558,7 @@ static int vc1_decode_p_mb(VC1Context *v)
}
vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
if (!s->mb_intra)
- vc1_mc_4mv_luma(v, i, 0);
+ vc1_mc_4mv_luma(v, i, 0, 0);
intra_count += s->mb_intra;
is_intra[i] = s->mb_intra;
is_coded[i] = mb_has_coeffs;
@@ -3638,7 +3648,7 @@ static int vc1_decode_p_mb(VC1Context *v)
}
for (i = 0; i < 4; i++) {
vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0);
- vc1_mc_4mv_luma(v, i, 0);
+ vc1_mc_4mv_luma(v, i, 0, 0);
}
vc1_mc_4mv_chroma(v, 0);
s->current_picture.qscale_table[mb_pos] = 0;
@@ -3716,8 +3726,10 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
break;
}
if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
- s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
- s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+ for (i = 0; i < 4; i++) {
+ s->current_picture.motion_val[1][s->block_index[i]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[i]][1] = 0;
+ }
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++)
@@ -3786,8 +3798,8 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
if (val) {
get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0);
}
- vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
- vc1_mc_4mv_luma(v, i, 0);
+ vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0);
+ vc1_mc_4mv_luma(v, i, 0, 0);
} else if (i == 4) {
vc1_mc_4mv_chroma4(v);
}
@@ -3798,16 +3810,16 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
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]);
- vc1_mc_4mv_luma(v, 0, 0);
- vc1_mc_4mv_luma(v, 1, 0);
+ vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
+ vc1_mc_4mv_luma(v, 0, 0, 0);
+ vc1_mc_4mv_luma(v, 1, 0, 0);
dmv_x = dmv_y = 0;
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]);
- vc1_mc_4mv_luma(v, 2, 0);
- vc1_mc_4mv_luma(v, 3, 0);
+ vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0);
+ vc1_mc_4mv_luma(v, 2, 0, 0);
+ vc1_mc_4mv_luma(v, 3, 0, 0);
vc1_mc_4mv_chroma4(v);
} else {
mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2];
@@ -3815,7 +3827,7 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
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]);
+ 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);
}
if (cbp)
@@ -3855,7 +3867,7 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
v->blk_mv_type[s->block_index[1]] = 0;
v->blk_mv_type[s->block_index[2]] = 0;
v->blk_mv_type[s->block_index[3]] = 0;
- vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
+ vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
vc1_mc_1mv(v, 0);
}
if (s->mb_x == s->mb_width - 1)
@@ -3942,7 +3954,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag);
}
vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0);
- vc1_mc_4mv_luma(v, i, 0);
+ vc1_mc_4mv_luma(v, i, 0, 0);
} else if (i == 4)
vc1_mc_4mv_chroma(v, 0);
}
@@ -4251,7 +4263,7 @@ static void vc1_decode_b_mb_intfi(VC1Context *v)
&pred_flag[bmvtype == BMV_TYPE_BACKWARD]);
}
vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag);
- vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD);
+ vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0);
} else if (i == 4)
vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD);
}
@@ -4285,6 +4297,348 @@ static void vc1_decode_b_mb_intfi(VC1Context *v)
}
}
+/** Decode one B-frame MB (in interlaced frame B picture)
+ */
+static int vc1_decode_b_mb_intfr(VC1Context *v)
+{
+ MpegEncContext *s = &v->s;
+ GetBitContext *gb = &s->gb;
+ int i, j;
+ 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 mvsw = 0; /* motion vector switch */
+ int mb_has_coeffs = 1; /* last_flag */
+ int dmv_x, dmv_y; /* Differential MV components */
+ int val; /* temp value */
+ int first_block = 1;
+ int dst_idx, off;
+ int skipped, direct, twomv = 0;
+ int block_cbp = 0, pat, block_tt = 0;
+ int idx_mbmode = 0, mvbp;
+ int stride_y, fieldtx;
+ int bmvtype = BMV_TYPE_BACKWARD;
+ int dir, dir2;
+
+ mquant = v->pq; /* Lossy initialization */
+ s->mb_intra = 0;
+ if (v->skip_is_raw)
+ skipped = get_bits1(gb);
+ else
+ skipped = v->s.mbskip_table[mb_pos];
+
+ 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) {
+ twomv = 1;
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ v->blk_mv_type[s->block_index[2]] = 1;
+ v->blk_mv_type[s->block_index[3]] = 1;
+ } else {
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+ }
+ }
+
+ if (v->dmb_is_raw)
+ direct = get_bits1(gb);
+ else
+ direct = v->direct_mb_plane[mb_pos];
+
+ if (direct) {
+ s->mv[0][0][0] = s->current_picture.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample);
+ s->mv[0][0][1] = s->current_picture.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample);
+ s->mv[1][0][0] = s->current_picture.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample);
+ s->mv[1][0][1] = s->current_picture.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample);
+
+ if (twomv) {
+ s->mv[0][2][0] = s->current_picture.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample);
+ s->mv[0][2][1] = s->current_picture.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample);
+ 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) {
+ 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];
+ s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1];
+ }
+ } else {
+ for (i = 1; i < 4; i++) {
+ s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0];
+ s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1];
+ s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0];
+ s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1];
+ }
+ }
+ }
+
+ if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB
+ for (i = 0; i < 4; i++) {
+ s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = 0;
+ s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = 0;
+ 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->mb_intra = v->is_intra[s->mb_x] = 1;
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 1;
+ fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
+ mb_has_coeffs = get_bits1(gb);
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
+ 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];
+ 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);
+ v->mb_type[0][s->block_index[i]] = s->mb_intra;
+ v->a_avail = v->c_avail = 0;
+ 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]);
+ if (i < 4) {
+ stride_y = s->linesize << fieldtx;
+ off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize;
+ } else {
+ stride_y = s->uvlinesize;
+ off = 0;
+ }
+ s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, stride_y);
+ }
+ } else {
+ s->mb_intra = v->is_intra[s->mb_x] = 0;
+ if (!direct) {
+ if (skipped || !s->mb_intra) {
+ bmvtype = decode012(gb);
+ switch (bmvtype) {
+ case 0:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
+ break;
+ case 1:
+ bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
+ break;
+ case 2:
+ bmvtype = BMV_TYPE_INTERPOLATED;
+ }
+ }
+
+ if (twomv && bmvtype != BMV_TYPE_INTERPOLATED)
+ mvsw = get_bits1(gb);
+ }
+
+ if (!skipped) { // inter MB
+ mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
+ if (mb_has_coeffs)
+ cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+ 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) {
+ v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
+ }
+ }
+
+ for (i = 0; i < 6; i++)
+ v->mb_type[0][s->block_index[i]] = 0;
+ fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1];
+ /* for all motion vector read MVDATA and motion compensate each block */
+ dst_idx = 0;
+ if (direct) {
+ if (twomv) {
+ for (i = 0; i < 4; i++) {
+ vc1_mc_4mv_luma(v, i, 0, 0);
+ vc1_mc_4mv_luma(v, i, 1, 1);
+ }
+ vc1_mc_4mv_chroma4(v);
+ } else {
+ vc1_mc_1mv(v, 0);
+ vc1_interp_mc(v);
+ }
+ } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) {
+ mvbp = v->fourmvbp;
+ for (i = 0; i < 4; i++) {
+ dir = i==1 || i==3;
+ dmv_x = dmv_y = 0;
+ val = ((mvbp >> (3 - i)) & 1);
+ 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);
+ vc1_mc_4mv_luma(v, j+1, dir, dir);
+ }
+
+ vc1_mc_4mv_chroma4(v);
+ } else if (bmvtype == BMV_TYPE_INTERPOLATED) {
+ mvbp = v->twomvbp;
+ dmv_x = dmv_y = 0;
+ 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)
+ 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);
+ } else if (twomv) {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+ dir2 = dir;
+ if (mvsw)
+ dir2 = !dir;
+ mvbp = v->twomvbp;
+ dmv_x = dmv_y = 0;
+ 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)
+ 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++) {
+ 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];
+ s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
+ }
+ } else {
+ vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
+ vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir);
+ }
+
+ vc1_mc_4mv_luma(v, 0, dir, 0);
+ vc1_mc_4mv_luma(v, 1, dir, 0);
+ vc1_mc_4mv_luma(v, 2, dir2, 0);
+ vc1_mc_4mv_luma(v, 3, dir2, 0);
+ vc1_mc_4mv_chroma4(v);
+ } else {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+
+ mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2];
+ dmv_x = dmv_y = 0;
+ 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;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ 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++) {
+ 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];
+ }
+ vc1_mc_1mv(v, dir);
+ }
+
+ if (cbp)
+ GET_MQUANT(); // p. 227
+ 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);
+ for (i = 0; i < 6; i++) {
+ s->dc_val[0][s->block_index[i]] = 0;
+ dst_idx += i >> 2;
+ val = ((cbp >> (5 - i)) & 1);
+ if (!fieldtx)
+ off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+ else
+ off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * 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 << fieldtx),
+ (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt);
+ block_cbp |= pat << (i << 2);
+ if (!v->ttmbf && ttmb < 8)
+ ttmb = -1;
+ first_block = 0;
+ }
+ }
+
+ } else { // skipped
+ dir = 0;
+ for (i = 0; i < 6; i++) {
+ v->mb_type[0][s->block_index[i]] = 0;
+ s->dc_val[0][s->block_index[i]] = 0;
+ }
+ s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
+ s->current_picture.qscale_table[mb_pos] = 0;
+ v->blk_mv_type[s->block_index[0]] = 0;
+ v->blk_mv_type[s->block_index[1]] = 0;
+ v->blk_mv_type[s->block_index[2]] = 0;
+ v->blk_mv_type[s->block_index[3]] = 0;
+
+ if (!direct) {
+ if (bmvtype == BMV_TYPE_INTERPOLATED) {
+ vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0);
+ vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 1);
+ } else {
+ dir = bmvtype == BMV_TYPE_BACKWARD;
+ vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], dir);
+ if (mvsw) {
+ int dir2 = dir;
+ if (mvsw)
+ dir2 = !dir;
+ 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];
+ s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1];
+ }
+ } else {
+ v->blk_mv_type[s->block_index[0]] = 1;
+ v->blk_mv_type[s->block_index[1]] = 1;
+ 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++) {
+ 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];
+ }
+ }
+ }
+ }
+
+ vc1_mc_1mv(v, dir);
+ if (direct || bmvtype == BMV_TYPE_INTERPOLATED) {
+ vc1_interp_mc(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);
+ v->cbp[s->mb_x] = block_cbp;
+ v->ttblk[s->mb_x] = block_tt;
+ return 0;
+}
+
/** Decode blocks of I-frame
*/
static void vc1_decode_i_blocks(VC1Context *v)
@@ -4675,6 +5029,8 @@ static void vc1_decode_b_blocks(VC1Context *v)
if (v->fcm == ILACE_FIELD)
vc1_decode_b_mb_intfi(v);
+ else if (v->fcm == ILACE_FRAME)
+ vc1_decode_b_mb_intfr(v);
else
vc1_decode_b_mb(v);
if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
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