BitmovinPlayerUIController uiReady() controlsWillShow() controlsWillHide() scalingMode hasOwnPlayerLayer isPictureInPicture rootView advertisingUiView hideAdContainerWhileStalling canShowAdContainer showSkipControlsInPictureInPicture enterPictureInPicture() exitPictureInPicture() destroy() willRotate() didRotate()