0001    //
0002    //  Sound.swift
0003    //  AudioPlayer Sample
0004    //
0005    //  Created by Tom Baranes on 15/01/16.
0006    //  Copyright © 2016 tbaranes. All rights reserved.
0007    //
0008    
0009    import Foundation
0010    import AVFoundation
0011    
0012    public enum AudioPlayerError
AudioPlayer.swift:94
            throw AudioPlayerError.FileExtension: ErrorType {
0013        case FileExtension
AudioPlayer.swift:94
            throw AudioPlayerError.FileExtension
0014    }
0015    
0016    public class AudioPlayer
AudioPlayer.swift:181
extension AudioPlayer: AVAudioPlayerDelegate {
AudioPlayer.swift:189
private extension AudioPlayer {
AudioPlayer.swift:200
        NSNotificationCenter.defaultCenter().postNotificationName(AudioPlayer.SoundDidFinishPlayingNotification, object: self): NSObject {
0017    
0018        public static let SoundDidFinishPlayingNotification
AudioPlayer.swift:200
        NSNotificationCenter.defaultCenter().postNotificationName(AudioPlayer.SoundDidFinishPlayingNotification, object: self) = "SoundDidFinishPlayingNotification"
0019        public typealias SoundCompletionHandler
AudioPlayer.swift:28
    internal var completionHandler: SoundCompletionHandler? = (didFinish: Bool) -> Void
0020        
0021        /// Name of the used to initialize the object
0022        public let name
AudioPlayer.swift:103
        name = fileURL.lastPathComponent: String?
0023    
0024        /// URL of the used to initialize the object
0025        public let URL
AudioPlayer.swift:102
        URL = fileURL: NSURL?
0026        
0027        /// A callback closure that will be called when the audio finishes playing, or is stopped.
0028        internal var completionHandler
AudioPlayer.swift:196
        if let nonNilCompletionHandler = completionHandler {: SoundCompletionHandler?
0029        
0030        /// is it playing or not?
0031        public var playing
AudioPlayer.swift:117
        if playing == false {
AudioPlayer.swift:123
        if playing {: Bool {
0032            get {
0033                if let nonNilsound = sound {
0034                    return nonNilsound.playing
0035                }
0036                return false
0037            }
0038        }
0039    
0040        /// the duration of the sound.
0041        public var duration: NSTimeInterval {
0042            get {
0043                if let nonNilsound = sound {
0044                    return nonNilsound.duration
0045                }
0046                return 0.0
0047            }
0048        }
0049        
0050        /// currentTime is the offset into the sound of the current playback position.
0051        public var currentTime: NSTimeInterval {
0052            get {
0053                if let nonNilsound = sound {
0054                    return nonNilsound.currentTime
0055                }
0056                return 0.0
0057            }
0058            set {
0059               sound?.currentTime = newValue
0060            }
0061        }
0062    
0063        /// The volume for the sound. The nominal range is from 0.0 to 1.0.
0064        public var volume
AudioPlayer.swift:66
            volume = min(1.0, max(0.0, volume));
AudioPlayer.swift:66
            volume = min(1.0, max(0.0, volume));
AudioPlayer.swift:67
            targetVolume = volume
AudioPlayer.swift:140
        volume = 0.0: Float = 1.0 {
0065            didSet {
0066                volume = min(1.0, max(0.0, volume));
0067                targetVolume = volume
0068            }
0069        }
0070        
0071        /// "numberOfLoops" is the number of times that the sound will return to the beginning upon reaching the end.
0072        /// A value of zero means to play the sound just once.
0073        /// A value of one will result in playing the sound twice, and so on..
0074        /// Any negative number will loop indefinitely until stopped.
0075        public var numberOfLoops
AudioPlayer.swift:77
            sound?.numberOfLoops = numberOfLoops: Int =  {
0076            didSet {
0077                sound?.numberOfLoops = numberOfLoops
0078            }
0079        }
0080    
0081        /// set panning. -1.0 is left, 0.0 is center, 1.0 is right.
0082        public var pan
AudioPlayer.swift:84
            sound?.pan = pan: Float = 0.0 {
0083            didSet {
0084                sound?.pan = pan
0085            }
0086        }
0087        
0088        // MARK: Init
0089    
0090        public convenience init(fileName: String) throws {
0091            let fixedFileName = fileName.stringByTrimmingCharactersInSet(.whitespaceAndNewlineCharacterSet())
0092            var soundFileComponents = fixedFileName.componentsSeparatedByString(".")
0093            if soundFileComponents.count ==  {
0094                throw AudioPlayerError.FileExtension
0095            }
0096            let path = NSBundle.mainBundle().pathForResource(soundFileComponents[], ofType: soundFileComponents[])
0097            try self.init(contentsOfPath: path!)
0098        }
0099    
0100        public init
AudioPlayer.swift:97
        try self.init(contentsOfPath: path!)(contentsOfPath path: String) throws {
0101            let fileURL = NSURL(fileURLWithPath: path)
0102            URL = fileURL
0103            name = fileURL.lastPathComponent
0104            sound = try? AVAudioPlayer(contentsOfURL: fileURL)
0105            super.init()
0106            
0107            sound?.delegate = self
0108        }
0109        
0110        deinit {
0111            timer?.invalidate()
0112        }
0113        
0114        // MARK: Play / Stop
0115        
0116        public func play() {
0117            if playing == false {
0118                sound?.play()
0119            }
0120        }
0121        
0122        public func stop
AudioPlayer.swift:160
                    stop()() {
0123            if playing {
0124                soundDidFinishPlayingSuccessfully(false)
0125            }
0126        }
0127        
0128        // MARK: Fade
0129        
0130        public func fadeTo
AudioPlayer.swift:141
        fadeTo(1.0, duration: duration)
AudioPlayer.swift:145
        fadeTo(0.0, duration: duration)(volume: Float, duration: NSTimeInterval = 1.0) {
0131            startVolume = volume;
0132            fadeTime = duration;
0133            fadeStart = NSDate().timeIntervalSinceReferenceDate
0134            if timer == nil {
0135                self.timer = NSTimer.scheduledTimerWithTimeInterval(0.015, target: self, selector: "handleFadeTo", userInfo: nil, repeats: true)
0136            }
0137        }
0138        
0139        public func fadeIn(duration: NSTimeInterval = 1.0) {
0140            volume = 0.0
0141            fadeTo(1.0, duration: duration)
0142        }
0143        
0144        public func fadeOut(duration: NSTimeInterval = 1.0) {
0145            fadeTo(0.0, duration: duration)
0146        }
0147    
0148        // MARK: Private
0149        
0150        private func handleFadeTo() {
0151            let now = NSDate().timeIntervalSinceReferenceDate
0152            let delta: Float = (Float(now - fadeStart) / Float(fadeTime) * (targetVolume - startVolume))
0153            sound?.volume = startVolume + delta
0154            if delta > 0.0 && sound?.volume >= targetVolume ||
0155                delta < 0.0 && sound?.volume <= targetVolume {
0156                    sound?.volume = targetVolume
0157                    timer?.invalidate()
0158                    timer = nil
0159                    if sound?.volume ==  {
0160                        stop()
0161                    }
0162            }
0163        }
0164        
0165        // MARK: Private properties
0166        
0167        private let sound
AudioPlayer.swift:33
            if let nonNilsound = sound {
AudioPlayer.swift:43
            if let nonNilsound = sound {
AudioPlayer.swift:53
            if let nonNilsound = sound {
AudioPlayer.swift:59
           sound?.currentTime = newValue
AudioPlayer.swift:77
            sound?.numberOfLoops = numberOfLoops
AudioPlayer.swift:84
            sound?.pan = pan
AudioPlayer.swift:104
        sound = try? AVAudioPlayer(contentsOfURL: fileURL)
AudioPlayer.swift:107
        sound?.delegate = self
AudioPlayer.swift:118
            sound?.play()
AudioPlayer.swift:153
        sound?.volume = startVolume + delta
AudioPlayer.swift:154
        if delta > 0.0 && sound?.volume >= targetVolume ||
AudioPlayer.swift:155
            delta < 0.0 && sound?.volume <= targetVolume {
AudioPlayer.swift:156
                sound?.volume = targetVolume
AudioPlayer.swift:159
                if sound?.volume == 0 {
AudioPlayer.swift:171
            sound?.volume = targetVolume
AudioPlayer.swift:192
        sound?.stop(): AVAudioPlayer?
0168        private var startVolume
AudioPlayer.swift:131
        startVolume = volume;
AudioPlayer.swift:152
        let delta: Float = (Float(now - fadeStart) / Float(fadeTime) * (targetVolume - startVolume))
AudioPlayer.swift:153
        sound?.volume = startVolume + delta: Float = 1.0
0169        private var targetVolume
AudioPlayer.swift:67
            targetVolume = volume
AudioPlayer.swift:152
        let delta: Float = (Float(now - fadeStart) / Float(fadeTime) * (targetVolume - startVolume))
AudioPlayer.swift:154
        if delta > 0.0 && sound?.volume >= targetVolume ||
AudioPlayer.swift:155
            delta < 0.0 && sound?.volume <= targetVolume {
AudioPlayer.swift:156
                sound?.volume = targetVolume
AudioPlayer.swift:171
            sound?.volume = targetVolume: Float = 1.0 {
0170            didSet {
0171                sound?.volume = targetVolume
0172            }
0173        }
0174        
0175        private var fadeTime
AudioPlayer.swift:132
        fadeTime = duration;
AudioPlayer.swift:152
        let delta: Float = (Float(now - fadeStart) / Float(fadeTime) * (targetVolume - startVolume)): NSTimeInterval = 0.0
0176        private var fadeStart
AudioPlayer.swift:133
        fadeStart = NSDate().timeIntervalSinceReferenceDate
AudioPlayer.swift:152
        let delta: Float = (Float(now - fadeStart) / Float(fadeTime) * (targetVolume - startVolume)): NSTimeInterval = 0.0
0177        private var timer
AudioPlayer.swift:111
        timer?.invalidate()
AudioPlayer.swift:134
        if timer == nil {
AudioPlayer.swift:135
            self.timer = NSTimer.scheduledTimerWithTimeInterval(0.015, target: self, selector: "handleFadeTo", userInfo: nil, repeats: true)
AudioPlayer.swift:157
                timer?.invalidate()
AudioPlayer.swift:158
                timer = nil
AudioPlayer.swift:193
        timer?.invalidate()
AudioPlayer.swift:194
        timer = nil: NSTimer?
0178        
0179    }
0180    
0181    extension AudioPlayer: AVAudioPlayerDelegate {
0182        
0183        public func audioPlayerDidFinishPlaying(player: AVAudioPlayer, successfully flag: Bool) {
0184            soundDidFinishPlayingSuccessfully(flag)
0185        }
0186        
0187    }
0188    
0189    private extension AudioPlayer {
0190        
0191        private func soundDidFinishPlayingSuccessfully
AudioPlayer.swift:124
            soundDidFinishPlayingSuccessfully(false)
AudioPlayer.swift:184
        soundDidFinishPlayingSuccessfully(flag)(didFinishSuccessfully: Bool) {
0192            sound?.stop()
0193            timer?.invalidate()
0194            timer = nil
0195            
0196            if let nonNilCompletionHandler = completionHandler {
0197                nonNilCompletionHandler(didFinish: didFinishSuccessfully)
0198            }
0199            
0200            NSNotificationCenter.defaultCenter().postNotificationName(AudioPlayer.SoundDidFinishPlayingNotification, object: self)
0201        }
0202        
0203    }
0204