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-rw-r--r--libswscale/swscale.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libswscale/swscale.h b/libswscale/swscale.h
index d18953486a..87a1c4461b 100644
--- a/libswscale/swscale.h
+++ b/libswscale/swscale.h
@@ -152,6 +152,9 @@ struct SwsContext *sws_alloc_context(void);
/**
* Initializes the swscaler context sws_context.
+ *
+ * @return zero or positive value on success, a negative value on
+ * error
*/
int sws_init_context(struct SwsContext *sws_context, SwsFilter *srcFilter, SwsFilter *dstFilter);