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-rw-r--r--libavfilter/vf_libopencv.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libavfilter/vf_libopencv.c b/libavfilter/vf_libopencv.c
index 176065d506..aa30d36880 100644
--- a/libavfilter/vf_libopencv.c
+++ b/libavfilter/vf_libopencv.c
@@ -67,7 +67,10 @@ static int query_formats(AVFilterContext *ctx)
return 0;
}
-static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
+static int null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+{
+ return 0;
+}
typedef struct {
const char *name;