Release 0.13.1

SwiftAudioEx.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SwiftAudioEx'
-  s.version          = '0.13.0'
+  s.version          = '0.13.1'
   s.summary          = 'Easy audio streaming for iOS'
   s.description      = <<-DESC
 SwiftAudioEx is an audio player written in Swift, making it simpler to work with audio playback from streams and files.

SwiftAudioEx/Classes/AudioPlayer.swift

@@ -115,9 +115,17 @@ public class AudioPlayer: AVPlayerWrapperDelegate {
         set { _wrapper.isMuted = newValue }
     }
 
+    private var _rate: Float = 1.0
     public var rate: Float {
-        get { return wrapper.rate }
-        set { _wrapper.rate = newValue }
+        get { return _rate }
+        set {
+            _rate = newValue
+
+            // Only set the rate on the wrapper if it is already playing.
+            if _wrapper.rate > 0 {
+                _wrapper.rate = newValue
+            }
+        }
     }
     
     // MARK: - Init
@@ -311,7 +319,11 @@ public class AudioPlayer: AVPlayerWrapperDelegate {
                 updateNowPlayingPlaybackValues()
             }
             setTimePitchingAlgorithmForCurrentItem()
-        case .playing, .paused:
+        case .playing:
+            // When a track starts playing, reset the rate to the stored rate
+            self.rate = _rate;
+            fallthrough
+        case .paused:
             if (automaticallyUpdateNowPlayingInfo) {
                 updateNowPlayingPlaybackValues()
             }

SwiftAudioEx/Classes/Event.swift

@@ -18,6 +18,7 @@ extension AudioPlayer {
     public typealias UpdateDurationEventData = (Double)
     public typealias MetadataEventData = ([AVMetadataItem])
     public typealias DidRecreateAVPlayerEventData = ()
+    public typealias QueueIndexEventData = (previousIndex: Int?, newIndex: Int?)
     
     public struct EventHolder {
         
@@ -70,7 +71,13 @@ extension AudioPlayer {
          - Note: It can be necessary to set the AVAudioSession's category again when this event is emitted.
          */
         public let didRecreateAVPlayer: AudioPlayer.Event<()> = AudioPlayer.Event()
-        
+
+        /**
+         Emitted when a new track starts and the queue index changes.
+         - Important: Remember to dispatch to the main queue if any UI is updated in the event handler.
+         - Note: It is only fired for instances of a QueuedAudioPlayer.
+         */
+        public let queueIndex: AudioPlayer.Event<QueueIndexEventData> = AudioPlayer.Event()
     }
     
     public typealias EventClosure<EventData> = (EventData) -> Void

SwiftAudioEx/Classes/QueueManager.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-protocol QueueManagerDelegate: class {
+protocol QueueManagerDelegate: AnyObject {
     func onReceivedFirstItem()
     func onCurrentIndexChanged(oldIndex: Int, newIndex: Int)
 }

SwiftAudioEx/Classes/QueuedAudioPlayer.swift

@@ -11,10 +11,15 @@ import MediaPlayer
 /**
  An audio player that can keep track of a queue of AudioItems.
  */
-public class QueuedAudioPlayer: AudioPlayer {
+public class QueuedAudioPlayer: AudioPlayer, QueueManagerDelegate {
     
     let queueManager: QueueManager = QueueManager<AudioItem>()
 
+    public init() {
+        super.init()
+        queueManager.delegate = self
+    }
+
     /// The repeat mode for the queue player.
     public var repeatMode: RepeatMode = .off
     
@@ -34,6 +39,7 @@ public class QueuedAudioPlayer: AudioPlayer {
      */
     public override func stop() {
         super.stop()
+        self.event.queueIndex.emit(data: (currentIndex, nil))
     }
     
     override func reset() {
@@ -199,4 +205,16 @@ public class QueuedAudioPlayer: AudioPlayer {
             } catch { /* TODO: handle possible errors from load */ }
         }
     }
+
+    // MARK: - QueueManagerDelegate
+
+    func onCurrentIndexChanged(oldIndex: Int, newIndex: Int) {
+        // if _currentItem is nil, then this was triggered by a reset. ignore.
+        if _currentItem == nil { return }
+        self.event.queueIndex.emit(data: (oldIndex, newIndex))
+    }
+
+    func onReceivedFirstItem() {
+        self.event.queueIndex.emit(data: (nil, 0))
+    }
 }