const AVFilterPad *inputs; ///< NULL terminated list of inputs. NULL if none
const AVFilterPad *outputs; ///< NULL terminated list of outputs. NULL if none
+ /**
+ * A class for the private data, used to access filter private
+ * AVOptions.
+ */
+ const AVClass *priv_class;
+
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavfilter and can be changed and