/*

    File: MixerHostViewController.h

Abstract: View controller: Sets up the user interface and conveys UI actions 

to the MixerHostAudio object. Also responds to state-change notifications from

the MixerHostAudio object.

 Version: 1.0

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*/

#import <UIKit/UIKit.h>

@class MixerHostAudio;

@interface MixerHostViewController : UIViewController {

    UIBarButtonItem *playButton;

    UISwitch        *mixerBus0Switch;

    UISwitch        *mixerBus1Switch;

    UISlider        *mixerBus0LevelFader;

    UISlider        *mixerBus1LevelFader;

    UISlider        *mixerOutputLevelFader;

    MixerHostAudio  *audioObject;

}

@property (nonatomic, retain)    IBOutlet UIBarButtonItem    *playButton; 

@property (nonatomic, retain)    IBOutlet UISwitch           *mixerBus0Switch;

@property (nonatomic, retain)    IBOutlet UISwitch           *mixerBus1Switch;

@property (nonatomic, retain)    IBOutlet UISlider           *mixerBus0LevelFader;

@property (nonatomic, retain)    IBOutlet UISlider           *mixerBus1LevelFader;

@property (nonatomic, retain)    IBOutlet UISlider           *mixerOutputLevelFader;

@property (nonatomic, retain)    MixerHostAudio              *audioObject;

- (IBAction) enableMixerInput:          (UISwitch *) sender;

- (IBAction) mixerInputGainChanged:     (UISlider *) sender;

- (IBAction) mixerOutputGainChanged:    (UISlider *) sender;

- (IBAction) playOrStop:                (id) sender;

- (void) handlePlaybackStateChanged: (id) notification;

- (void) initializeMixerSettingsToUI;

- (void) registerForAudioObjectNotifications;

@end