Gst.Element.prototype.is_locked_state

function is_locked_state():Boolean {
    // Gjs wrapper for gst_element_is_locked_state()
}

Checks if the state of an element is locked. If the state of an element is locked, state changes of the parent don't affect the element. This way you can leave currently unused elements inside bins. Just lock their state before changing the state from #GST_STATE_NULL.

MT safe.