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-rw-r--r--libavfilter/avfilter.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 911cdd6226..49d90cf522 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -177,7 +177,18 @@ AVFilterFormats *avfilter_all_colorspaces(void);
*/
AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b);
-/** Adds *ref as a new reference to f */
+/**
+ * Adds *ref as a new reference to f.
+ * That is the pointers will point like in the ascii art below:
+ * ________
+ * | f |<--------.
+ * | ____ | |
+ * | |refs| | __|_
+ * | |* * | | | | |
+ * | |* *--------->|*ref|
+ * | |____| | |____|
+ * |________|
+ */
void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref);
/**