@class NSSet, NSHashTable, NSObject, IRAVOutputDeviceDiscoverySessionController; @protocol OS_dispatch_queue; @interface IRAVOutputDeviceProvider : NSObject @property (retain, nonatomic) NSSet *cachedDevices; @property (retain, nonatomic) NSHashTable *observers; @property (retain, nonatomic) NSObject<OS_dispatch_queue> *queue; @property (readonly, nonatomic) NSSet *availableOutputDevices; @property (retain, nonatomic) IRAVOutputDeviceDiscoverySessionController *discoverySessionController; - (id)init; - (void)removeObserver:(id)a0; - (void).cxx_destruct; - (void)addObserver:(id)a0; - (id)_logDevicesString:(id)a0; - (void)didUpdateAVOutputDevices:(id)a0; - (void)logActiveDevices; @end