//  MXAudioPlayerFadeOperation.h

//

//  Created by Andrew Mackenzie-Ross on 30/11/10.

//  mackross.net

//

#import <Foundation/Foundation.h>

@class AVAudioPlayer;

@interface MXAudioPlayerFadeOperation : NSOperation {

  AVAudioPlayer *_audioPlayer;

  NSTimeInterval _fadeDuration;

  NSTimeInterval _delay;

  float _finishVolume;

  BOOL _pauseAfterFade;

  BOOL _stopAfterFade;

  BOOL _playBeforeFade;

}

// The AVAudioPlayer that the volume fade will be applied to.

// Retained until the fade is completed.

// Must be set with init method.

@property (nonatomic, strong, readonly) AVAudioPlayer *audioPlayer;

// The duration of the volume fade.

// Default value is 1.0

@property (nonatomic, assign) NSTimeInterval fadeDuration;

// The delay before the volume fade begins.

// Default value is 0.0

@property (nonatomic, assign) NSTimeInterval delay;

// The volume that will be faded to.

// Default value is 0.0

@property (nonatomic, assign) float finishVolume;

// If YES, audio player will be sent a pause message when the fade has completed.

// Default value is NO, however, if finishVolume is 0.0, default is YES

@property (nonatomic, assign) BOOL pauseAfterFade;

// If YES, when the fade has completed the audio player will be sent a stop message.

// Default value is NO.

@property (nonatomic, assign) BOOL stopAfterFade;

// If YES, audio player will be sent a play message after the delay.

// Default value is YES.

@property (nonatomic, assign) BOOL playBeforeFade;

// Init Methods

- (id)initFadeWithAudioPlayer:(AVAudioPlayer*)player toVolume:(float)volume overDuration:(NSTimeInterval)duration withDelay:(NSTimeInterval)timeDelay;

- (id)initFadeWithAudioPlayer:(AVAudioPlayer*)player toVolume:(float)volume overDuration:(NSTimeInterval)duration;

- (id)initFadeWithAudioPlayer:(AVAudioPlayer*)player toVolume:(float)volume;

- (id)initFadeWithAudioPlayer:(AVAudioPlayer*)player;

@end