unsafe extern "C" fn aggregator_src_activate<T: AggregatorImpl>(
ptr: *mut GstAggregator,
mode: GstPadMode,
active: gboolean,
) -> gboolean
unsafe extern "C" fn aggregator_src_activate<T: AggregatorImpl>(
ptr: *mut GstAggregator,
mode: GstPadMode,
active: gboolean,
) -> gboolean