Set if the event can travel downstream.
Set if the event should be serialized with data flow.
Set if the event is sticky on the pads.
Multiple sticky events can be on a pad, each identified by the event name.
Set if the event can travel upstream.
#GstEventTypeFlags indicate the aspects of the different #GstEventType values. You can get the type flags of a #GstEventType with the gst_event_type_get_flags() function.