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lavc/vvc: Don't check motion estimation region for IBC

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The final parameter of check_available determines whether the motion
estimation region constraints imposed in section 8.5.2.3 of H.266 (V3)
on MVP candidates apply to the current candidate or not.  In the case of
IBC spatial merge candidates they do not, as their availability is
dependent only on the criteria described in sections 8.6.2.3 and 6.4.4,
which do not include this constraint on the motion estimation region.

Signed-off-by: Frank Plowman <post@frankplowman.com>
This commit is contained in:
Frank Plowman
2024-11-28 22:17:24 +00:00
committed by Nuo Mi
parent 9221cb0443
commit 7399d9f374
1 changed files with 2 additions and 2 deletions
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libavcodec/vvc/mvs.c
+2 -2
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@@ -1627,12 +1627,12 @@ static int ibc_spatial_candidates(const VVCLocalContext *lc, const int merge_idx
init_neighbour_context(&nctx, lc);
if (check_available(a1, lc, 1)) {
if (check_available(a1, lc, 0)) {
cand_list[num_cands++] = TAB_MVF(a1->x, a1->y).mv[L0];
if (num_cands > merge_idx)
return 1;
}
if (check_available(b1, lc, 1)) {
if (check_available(b1, lc, 0)) {
const MvField *mvf = &TAB_MVF(b1->x, b1->y);
if (!num_cands || !IS_SAME_MV(&cand_list[0], mvf->mv)) {
cand_list[num_cands++] = mvf->mv[L0];