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 failed
GST_STATE_CHANGE_SUCCESS
the state change succeeded
GST_STATE_CHANGE_ASYNC
the state change will happen asynchronously
GST_STATE_CHANGE_NO_PREROLL
the state change succeeded but the element
cannot produce data in GST_STATE_PAUSED.
This typically happens with live sources.
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 failed GST_STATE_CHANGE_SUCCESS the state change succeeded GST_STATE_CHANGE_ASYNC the state change will happen asynchronously GST_STATE_CHANGE_NO_PREROLL the state change succeeded but the element cannot produce data in GST_STATE_PAUSED. This typically happens with live sources.