@class NSDictionary, NSString; @interface MediaPlaybackCore.PlaybackStackController : _TtCs12_SwiftObject <MFStateDumpable, MFResettable, MFAudioSessionControlling, MFStackModeConfigurable, MFPlayerConfigurable> { void /* unknown type, empty encoding */ queueController; void /* unknown type, empty encoding */ playerController; void /* unknown type, empty encoding */ reporter; void /* unknown type, empty encoding */ assetQueueController; void /* unknown type, empty encoding */ errorController; void /* unknown type, empty encoding */ backgroundTaskController; void /* unknown type, empty encoding */ currentSetQueueIdentifier; } @property (nonatomic, readonly) NSDictionary *stateDictionary; @property (nonatomic, readonly) NSString *modeDescription; @property (nonatomic, readonly) BOOL isModeSolo; @property (nonatomic, readonly) BOOL isModeShared; @property (nonatomic, readonly) BOOL isModeManagedSession; - (void)deactivateAudioSessionIfIdle:(long long)a0; - (void)setRelativeVolume:(float)a0; - (void)resetWithReason:(id)a0; - (void)activateAudioSessionWithCompletion:(id /* block */)a0; - (void)setInhibitSpeechDetection:(BOOL)a0; - (void)setSpatializationFormat:(long long)a0; - (void)setupForManagedSessionWithAudioSession:(id)a0; - (void)setupForShared; - (void)setupForSolo; - (void)updateAudioSessionWithConfiguration:(id)a0; @end