lavfi/histeq: fix out of array write

Signed-off-by: Paul B Mahol <onemda@gmail.com>

lavfi/histeq: fix out of array write
Signed-off-by: Paul B Mahol <onemda@gmail.com>
b8edf916 · Paul B Mahol · 161dee43 · b8edf916
Commit b8edf916 authored Apr 17, 2013 by Paul B Mahol
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vf_histeq.c libavfilter/vf_histeq.c +1 -1

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--- a/libavfilter/vf_histeq.c
+++ b/libavfilter/vf_histeq.c
@@ -235,7 +235,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
                dst[x + histeq->rgba_map[R]] = r;
                dst[x + histeq->rgba_map[G]] = g;
                dst[x + histeq->rgba_map[B]] = b;
-                oluma = (55 * r + 182 * g + 19 * b) >> 8;
+                oluma = av_clip_uint8((55 * r + 182 * g + 19 * b) >> 8);
                histeq->out_histogram[oluma]++;
            }
        }