The possible return values from a state change function such as gst_element_set_state(). Only GST_STATE_CHANGE_FAILURE is a real failure.
GST_STATE_CHANGE_FAILURE
the state change will happen asynchronously
the state change failed
the state change succeeded but the element cannot produce data in %GST_STATE_PAUSED. This typically happens with live sources.
the state change succeeded
The possible return values from a state change function such as gst_element_set_state(). Only
GST_STATE_CHANGE_FAILUREis a real failure.