avfilter/vf_decimate: fix crash with gray8

Signed-off-by: Paul B Mahol <onemda@gmail.com>
11 years ago · 0ad5ef674b
parent 1f5d1342ea
commit 0ad5ef674b
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/vf_decimate.c
+++ b/libavfilter/vf_decimate.c
@ -86,7 +86,7 @@ static void calc_diffs(const DecimateContext *dm, struct qitem *q,

    memset(bdiffs, 0, dm->bdiffsize * sizeof(*bdiffs));

-    for (plane = 0; plane < (dm->chroma ? 3 : 1); plane++) {
+    for (plane = 0; plane < (dm->chroma && f1->data[2] ? 3 : 1); plane++) {
        int x, y, xl;
        const int linesize1 = f1->linesize[plane];
        const int linesize2 = f2->linesize[plane];