+
+ /**
+ * True if a frame is currently wanted on the input of this filter.
+ * Set when ff_request_frame() is called by the output,
+ * cleared when the request is handled or forwarded.
+ */
+ int frame_wanted_in;
+
+ /**
+ * True if a frame is currently wanted on the output of this filter.
+ * Set when ff_request_frame() is called by the output,
+ * cleared when a frame is filtered.
+ */
+ int frame_wanted_out;