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Merge "vp10: allow MV refs to point outside visible image."

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This commit is contained in:
Ronald S. Bultje 2015-10-20 15:56:56 +00:00 committed by Gerrit Code Review
commit 1a64595780
2 changed files with 17 additions and 2 deletions
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4
vp10/common/mvref_common.c
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@ -27,6 +27,8 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
const MV_REF *const prev_frame_mvs = cm->use_prev_frame_mvs ?
cm->prev_frame->mvs + mi_row * cm->mi_cols + mi_col : NULL;
const TileInfo *const tile = &xd->tile;
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;
// Blank the reference vector list
memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);
@ -145,7 +147,7 @@ static void find_mv_refs_idx(const VP10_COMMON *cm, const MACROBLOCKD *xd,
// Clamp vectors
for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
clamp_mv_ref(&mv_ref_list[i].as_mv, xd);
clamp_mv_ref(&mv_ref_list[i].as_mv, bw, bh, xd);
}
void vp10_find_mv_refs(const VP10_COMMON *cm, const MACROBLOCKD *xd,

15
vp10/common/mvref_common.h
View File

@ -119,13 +119,26 @@ static const int idx_n_column_to_subblock[4][2] = {
};
// clamp_mv_ref
#if CONFIG_MISC_FIXES
#define MV_BORDER (8 << 3) // Allow 8 pels in 1/8th pel units
#else
#define MV_BORDER (16 << 3) // Allow 16 pels in 1/8th pel units
#endif
static INLINE void clamp_mv_ref(MV *mv, const MACROBLOCKD *xd) {
static INLINE void clamp_mv_ref(MV *mv, int bw, int bh, const MACROBLOCKD *xd) {
#if CONFIG_MISC_FIXES
clamp_mv(mv, xd->mb_to_left_edge - bw * 8 - MV_BORDER,
xd->mb_to_right_edge + bw * 8 + MV_BORDER,
xd->mb_to_top_edge - bh * 8 - MV_BORDER,
xd->mb_to_bottom_edge + bh * 8 + MV_BORDER);
#else
(void) bw;
(void) bh;
clamp_mv(mv, xd->mb_to_left_edge - MV_BORDER,
xd->mb_to_right_edge + MV_BORDER,
xd->mb_to_top_edge - MV_BORDER,
xd->mb_to_bottom_edge + MV_BORDER);
#endif
}
// This function returns either the appropriate sub block or block's mv