/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Metronome class header file

*/

#import <Foundation/Foundation.h>

#import <AVFoundation/AVFoundation.h>

@protocol MetronomeDelegate <NSObject>

@optional

- (void)metronomeTick:(NSInteger)currentTick;

@end

@interface Metronome : NSObject

+ (nullable instancetype)sharedInstance;

- (BOOL)startClock;

- (void)stopClock;

- (void)reset;

- (void)incrementTempo:(NSInteger)increment;

- (void)incrementMeter:(NSInteger)increment;

- (void)incrementDivisionIndex:(NSInteger)increment;

@property (nonatomic, readonly) NSInteger   tempo;

@property (nonatomic, readonly) NSUInteger  meter;

@property (nonatomic, readonly) NSInteger   division;

@property (nonatomic, readonly) NSInteger   currentTick;

@property (nonatomic, readonly) BOOL        isRunning;

@property (nonatomic, weak, nullable) id<MetronomeDelegate> delegate;

@end