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avfilter/vf_edgedetect: check if height is big enough

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Fixes #8260

(cherry picked from commit ccf4ab8c9a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Paul B Mahol
2019-10-13 17:23:10 +02:00
committed by Michael Niedermayer
parent c1ce4fba51
commit 3ee76a3ddb
1 changed files with 6 additions and 3 deletions
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3
libavfilter/vf_edgedetect.c
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@@ -122,6 +122,7 @@ static void gaussian_blur(AVFilterContext *ctx, int w, int h,
int i, j; int i, j;
memcpy(dst, src, w); dst += dst_linesize; src += src_linesize; memcpy(dst, src, w); dst += dst_linesize; src += src_linesize;
if (h > 1)
memcpy(dst, src, w); dst += dst_linesize; src += src_linesize; memcpy(dst, src, w); dst += dst_linesize; src += src_linesize;
for (j = 2; j < h - 2; j++) { for (j = 2; j < h - 2; j++) {
dst[0] = src[0]; dst[0] = src[0];
@@ -152,7 +153,9 @@ static void gaussian_blur(AVFilterContext *ctx, int w, int h,
dst += dst_linesize; dst += dst_linesize;
src += src_linesize; src += src_linesize;
} }
if (h > 2)
memcpy(dst, src, w); dst += dst_linesize; src += src_linesize; memcpy(dst, src, w); dst += dst_linesize; src += src_linesize;
if (h > 3)
memcpy(dst, src, w); memcpy(dst, src, w);
} }