@class SVKeyValueObserver, SVPlaybackCoordinator, NSString, AVAudioSession; @interface SVVideoVolumeObserver : NSObject <SVVideoPlaybackObserver, SVVideoVolumeObserving> @property (readonly, weak, nonatomic) SVPlaybackCoordinator *playbackCoordinator; @property (readonly, weak, nonatomic) AVAudioSession *audioSession; @property (readonly, nonatomic) SVKeyValueObserver *outputVolumeObserver; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; @property (readonly, nonatomic) BOOL muted; @property (readonly, nonatomic) float volume; @property (copy, nonatomic, setter=onVolumeChange:) id /* block */ volumeChangeBlock; @property (copy, nonatomic, setter=onMuteStateChange:) id /* block */ muteStateChangeBlock; - (void).cxx_destruct; - (void)volumeChanged:(float)a0; - (id)initWithPlaybackCoordinator:(id)a0 audioSession:(id)a1; - (void)playbackCoordinatorMuteStateChanged:(id)a0; - (void)updateWithVolume:(float)a0 muted:(BOOL)a1; @end