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vp10: clip MVs before adding to find_ref_mvs() list.

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This causes the output of find_ref_mvs() to always be unique or zero.
A nice side-effect of this is that it also causes the output of
find_ref_mvs_sub8x8() to be unique-or-zero, and it will not ignore
available candidate MVs under certain conditions.

See issue 1012.

Change-Id: If4792789cb7885dbc9db420001d95f9b91b63bfa
This commit is contained in:
Ronald S. Bultje 2015-10-20 13:31:40 -04:00
parent dec4405cfa
commit 293e20df91
2 changed files with 35 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
vp10/common/mvref_common.c
View File

@ -30,8 +30,10 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type] << 3;
const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type] << 3;
#if !CONFIG_MISC_FIXES
// Blank the reference vector list
memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);
#endif
// The nearest 2 blocks are treated differently
// if the size < 8x8 we get the mv from the bmi substructure,
@ -48,10 +50,10 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, block),
refmv_count, mv_ref_list, Done);
refmv_count, mv_ref_list, bw, bh, xd, Done);
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1, mv_ref->col, block),
refmv_count, mv_ref_list, Done);
refmv_count, mv_ref_list, bw, bh, xd, Done);
}
}
@ -66,9 +68,11 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
different_ref_found = 1;
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[0], refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(candidate->mv[0], refmv_count, mv_ref_list,
bw, bh, xd, Done);
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[1], refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(candidate->mv[1], refmv_count, mv_ref_list,
bw, bh, xd, Done);
}
}
@ -90,9 +94,11 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
}
if (prev_frame_mvs->ref_frame[0] == ref_frame) {
ADD_MV_REF_LIST(prev_frame_mvs->mv[0], refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(prev_frame_mvs->mv[0], refmv_count, mv_ref_list,
bw, bh, xd, Done);
} else if (prev_frame_mvs->ref_frame[1] == ref_frame) {
ADD_MV_REF_LIST(prev_frame_mvs->mv[1], refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(prev_frame_mvs->mv[1], refmv_count, mv_ref_list,
bw, bh, xd, Done);
}
}
@ -108,7 +114,7 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
// If the candidate is INTRA we don't want to consider its mv.
IF_DIFF_REF_FRAME_ADD_MV(candidate, ref_frame, ref_sign_bias,
refmv_count, mv_ref_list, Done);
refmv_count, mv_ref_list, bw, bh, xd, Done);
}
}
}
@ -123,7 +129,7 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
mv.as_mv.row *= -1;
mv.as_mv.col *= -1;
}
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, bw, bh, xd, Done);
}
if (prev_frame_mvs->ref_frame[1] > INTRA_FRAME &&
@ -137,7 +143,7 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
mv.as_mv.row *= -1;
mv.as_mv.col *= -1;
}
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done);
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, bw, bh, xd, Done);
}
}
@ -145,9 +151,14 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
mode_context[ref_frame] = counter_to_context[context_counter];
#if CONFIG_MISC_FIXES
for (i = refmv_count; i < MAX_MV_REF_CANDIDATES; ++i)
mv_ref_list[i].as_int = 0;
#else
// Clamp vectors
for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
clamp_mv_ref(&mv_ref_list[i].as_mv, bw, bh, xd);
#endif
}
void vp10_find_mv_refs(const VP10_COMMON *cm, const MACROBLOCKD *xd,

25
vp10/common/mvref_common.h
View File

@ -164,36 +164,41 @@ static INLINE int_mv scale_mv(const MB_MODE_INFO *mbmi, int ref,
return mv;
}
#if CONFIG_MISC_FIXES
#define CLIP_IN_ADD(mv, bw, bh, xd) clamp_mv_ref(mv, bw, bh, xd)
#else
#define CLIP_IN_ADD(mv, bw, bh, xd) do {} while (0)
#endif
// This macro is used to add a motion vector mv_ref list if it isn't
// already in the list. If it's the second motion vector it will also
// skip all additional processing and jump to done!
#define ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done) \
#define ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, bw, bh, xd, Done) \
do { \
if (refmv_count) { \
if ((mv).as_int != (mv_ref_list)[0].as_int) { \
(mv_ref_list)[(refmv_count)] = (mv); \
(mv_ref_list)[(refmv_count)] = (mv); \
CLIP_IN_ADD(&(mv_ref_list)[(refmv_count)].as_mv, (bw), (bh), (xd)); \
if (refmv_count && (mv_ref_list)[1].as_int != (mv_ref_list)[0].as_int) { \
(refmv_count) = 2; \
goto Done; \
} \
} else { \
(mv_ref_list)[(refmv_count)++] = (mv); \
} \
(refmv_count) = 1; \
} while (0)
// If either reference frame is different, not INTRA, and they
// are different from each other scale and add the mv to our list.
#define IF_DIFF_REF_FRAME_ADD_MV(mbmi, ref_frame, ref_sign_bias, refmv_count, \
mv_ref_list, Done) \
mv_ref_list, bw, bh, xd, Done) \
do { \
if (is_inter_block(mbmi)) { \
if ((mbmi)->ref_frame[0] != ref_frame) \
ADD_MV_REF_LIST(scale_mv((mbmi), 0, ref_frame, ref_sign_bias), \
refmv_count, mv_ref_list, Done); \
refmv_count, mv_ref_list, bw, bh, xd, Done); \
if (has_second_ref(mbmi) && \
(CONFIG_MISC_FIXES || \
(mbmi)->mv[1].as_int != (mbmi)->mv[0].as_int) && \
(mbmi)->ref_frame[1] != ref_frame) \
ADD_MV_REF_LIST(scale_mv((mbmi), 1, ref_frame, ref_sign_bias), \
refmv_count, mv_ref_list, Done); \
refmv_count, mv_ref_list, bw, bh, xd, Done); \
} \
} while (0)