[FFmpeg-cvslog] hevc/mvs: remove same prediction block
Mickaël Raulet
git at videolan.org
Tue Jul 22 14:16:58 CEST 2014
ffmpeg | branch: master | Mickaël Raulet <mraulet at insa-rennes.fr> | Sat Jul 19 01:03:20 2014 +0200| [e9bb45ba7905dea68f44209aa15e0911895e39ea] | committer: Michael Niedermayer
hevc/mvs: remove same prediction block
cherry picked from commit 1206262ba1ef810328cadce99d5cdc0bf9285e4d
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e9bb45ba7905dea68f44209aa15e0911895e39ea
---
libavcodec/hevc_mvs.c | 48 ++++++++++--------------------------------------
1 file changed, 10 insertions(+), 38 deletions(-)
diff --git a/libavcodec/hevc_mvs.c b/libavcodec/hevc_mvs.c
index 1cdc0bd..a09f70a 100644
--- a/libavcodec/hevc_mvs.c
+++ b/libavcodec/hevc_mvs.c
@@ -88,34 +88,6 @@ static int z_scan_block_avail(HEVCContext *s, int xCurr, int yCurr,
}
}
-static int same_prediction_block(HEVCLocalContext *lc, int log2_cb_size,
- int x0, int y0, int nPbW, int nPbH,
- int xA1, int yA1, int partIdx)
-{
- return !(nPbW << 1 == 1 << log2_cb_size &&
- nPbH << 1 == 1 << log2_cb_size && partIdx == 1 &&
- lc->cu.x + nPbW > xA1 &&
- lc->cu.y + nPbH <= yA1);
-}
-
-/*
- * 6.4.2 Derivation process for prediction block availability
- */
-static int check_prediction_block_available(HEVCContext *s, int log2_cb_size,
- int x0, int y0, int nPbW, int nPbH,
- int xA1, int yA1, int partIdx)
-{
- HEVCLocalContext *lc = s->HEVClc;
-
- if (lc->cu.x < xA1 && lc->cu.y < yA1 &&
- (lc->cu.x + (1 << log2_cb_size)) > xA1 &&
- (lc->cu.y + (1 << log2_cb_size)) > yA1)
- return same_prediction_block(lc, log2_cb_size, x0, y0,
- nPbW, nPbH, xA1, yA1, partIdx);
- else
- return z_scan_block_avail(s, x0, y0, xA1, yA1);
-}
-
//check if the two luma locations belong to the same mostion estimation region
static int isDiffMER(HEVCContext *s, int xN, int yN, int xP, int yP)
{
@@ -303,9 +275,7 @@ static int temporal_luma_motion_vector(HEVCContext *s, int x0, int y0,
(cand && !(TAB_MVF_PU(v).pred_flag == PF_INTRA))
#define PRED_BLOCK_AVAILABLE(v) \
- check_prediction_block_available(s, log2_cb_size, \
- x0, y0, nPbW, nPbH, \
- x ## v, y ## v, part_idx)
+ z_scan_block_avail(s, x0, y0, x ## v, y ## v)
#define COMPARE_MV_REFIDX(a, b) \
compareMVrefidx(TAB_MVF_PU(a), TAB_MVF_PU(b))
@@ -372,8 +342,6 @@ static void derive_spatial_merge_candidates(HEVCContext *s, int x0, int y0,
int is_available_b0;
int is_available_b1;
int is_available_b2;
- int check_B0;
- int check_A0;
//first left spatial merge candidate
is_available_a1 = AVAILABLE(cand_left, A1);
@@ -411,9 +379,10 @@ static void derive_spatial_merge_candidates(HEVCContext *s, int x0, int y0,
// above right spatial merge candidate
check_MER = 1;
- check_B0 = PRED_BLOCK_AVAILABLE(B0);
- is_available_b0 = check_B0 && AVAILABLE(cand_up_right, B0);
+ is_available_b0 = AVAILABLE(cand_up_right, B0) &&
+ xB0 < s->sps->width &&
+ PRED_BLOCK_AVAILABLE(B0);
if (isDiffMER(s, xB0, yB0, x0, y0))
is_available_b0 = 0;
@@ -429,9 +398,10 @@ static void derive_spatial_merge_candidates(HEVCContext *s, int x0, int y0,
// left bottom spatial merge candidate
check_MER = 1;
- check_A0 = PRED_BLOCK_AVAILABLE(A0);
- is_available_a0 = check_A0 && AVAILABLE(cand_bottom_left, A0);
+ is_available_a0 = AVAILABLE(cand_bottom_left, A0) &&
+ yA0 < s->sps->height &&
+ PRED_BLOCK_AVAILABLE(A0);
if (isDiffMER(s, xA0, yA0, x0, y0))
is_available_a0 = 0;
@@ -698,7 +668,9 @@ void ff_hevc_luma_mv_mvp_mode(HEVCContext *s, int x0, int y0, int nPbW,
xA0_pu = xA0 >> s->sps->log2_min_pu_size;
yA0_pu = yA0 >> s->sps->log2_min_pu_size;
- is_available_a0 = PRED_BLOCK_AVAILABLE(A0) && AVAILABLE(cand_bottom_left, A0);
+ is_available_a0 = AVAILABLE(cand_bottom_left, A0) &&
+ yA0 < s->sps->height &&
+ PRED_BLOCK_AVAILABLE(A0);
//left spatial merge candidate
xA1 = x0 - 1;
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