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-rw-r--r--libavfilter/vf_showinfo.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
index cc9ec1c1d0..ede1765d1e 100644
--- a/libavfilter/vf_showinfo.c
+++ b/libavfilter/vf_showinfo.c
@@ -78,9 +78,11 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
int i, plane, vsub = desc->log2_chroma_h;
for (plane = 0; frame->data[plane] && plane < 4; plane++) {
- size_t linesize = av_image_get_linesize(frame->format, frame->width, plane);
uint8_t *data = frame->data[plane];
int h = plane == 1 || plane == 2 ? inlink->h >> vsub : inlink->h;
+ int linesize = av_image_get_linesize(frame->format, frame->width, plane);
+ if (linesize < 0)
+ return linesize;
for (i = 0; i < h; i++) {
plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize);