Release 2.13.0

Co-Authored-By: fayinsky <38639193+fayinsky@users.noreply.github.com>

Example/Pods/Pods.xcodeproj/project.pbxproj

@@ -14,6 +14,7 @@
 		79D8DF73FA7CDD6E266BAE71D46E035F /* Pods-SwiftAudioPlayer_Tests-umbrella.h in Headers */ = {isa = PBXBuildFile; fileRef = 50C71346CE708A211A5AFAC20BAE48CB /* Pods-SwiftAudioPlayer_Tests-umbrella.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		831B263D357A5FA2DDC7B1AE4B374092 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 5A16F4CFC63FAC439D7A04994F579A03 /* Foundation.framework */; };
 		8F93DB166237195ED222EE55B6404625 /* Pods-SwiftAudioPlayer_Example-umbrella.h in Headers */ = {isa = PBXBuildFile; fileRef = 3B0B76CB1439F4D361322144E5A65C3A /* Pods-SwiftAudioPlayer_Example-umbrella.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		A40DBE292391D9CA00F86146 /* Data.swift in Sources */ = {isa = PBXBuildFile; fileRef = A40DBE282391D9C900F86146 /* Data.swift */; };
 		A41AA0D2238BB9B600A467E1 /* SAPlayingStatus.swift in Sources */ = {isa = PBXBuildFile; fileRef = A41AA0D1238BB9B600A467E1 /* SAPlayingStatus.swift */; };
 		A4681FC6220113880018AB51 /* SAPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = A4681F8D2200E00E0018AB51 /* SAPlayer.swift */; };
 		A4681FC72201138B0018AB51 /* SAPlayerDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = A4681F912200E1950018AB51 /* SAPlayerDelegate.swift */; };
@@ -96,6 +97,7 @@
 		99925F09FC9C6EA4B9C0508F4E2D1FE2 /* Info.plist */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		A19C8F889C787C19BE4123C1896AF501 /* Pods-SwiftAudioPlayer_Example-resources.sh */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.script.sh; path = "Pods-SwiftAudioPlayer_Example-resources.sh"; sourceTree = "<group>"; };
 		A39F2A138CF40C1051CA9E227429A86D /* SwiftAudioPlayer.modulemap */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.module; path = SwiftAudioPlayer.modulemap; sourceTree = "<group>"; };
+		A40DBE282391D9C900F86146 /* Data.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Data.swift; sourceTree = "<group>"; };
 		A41AA0D1238BB9B600A467E1 /* SAPlayingStatus.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SAPlayingStatus.swift; sourceTree = "<group>"; };
 		A4523BC8220A0B3C0079C4BC /* Credited_LICENSE */ = {isa = PBXFileReference; lastKnownFileType = text; path = Credited_LICENSE; sourceTree = "<group>"; };
 		A4681F802200D0500018AB51 /* Log.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Log.swift; sourceTree = "<group>"; };
@@ -273,6 +275,7 @@
 				A4681F872200DAD50018AB51 /* DirectorThreadSafeClosures.swift */,
 				A4681F892200DB3C0018AB51 /* Date.swift */,
 				A4681F962200E2E20018AB51 /* URL.swift */,
+				A40DBE282391D9C900F86146 /* Data.swift */,
 			);
 			path = Util;
 			sourceTree = "<group>";
@@ -488,16 +491,17 @@
 						LastSwiftMigration = 1010;
 					};
 					E50DAD13FFD3FC8036073A58BF8423D4 = {
-						LastSwiftMigration = 1010;
+						LastSwiftMigration = 1120;
 					};
 				};
 			};
 			buildConfigurationList = 2D8E8EC45A3A1A1D94AE762CB5028504 /* Build configuration list for PBXProject "Pods" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = 7DB346D0F39D3F0E887471402A8071AB;
 			productRefGroup = 21D946895A4F57F51246F3EBCF330719 /* Products */;
@@ -523,6 +527,7 @@
 				A4681FD2220113B20018AB51 /* AudioParser.swift in Sources */,
 				A4681FCF220113A40018AB51 /* AudioConverterListener.swift in Sources */,
 				A4681FE1220113E70018AB51 /* Constants.swift in Sources */,
+				A40DBE292391D9CA00F86146 /* Data.swift in Sources */,
 				A4FBA6B5221B74C900D5A353 /* SALockScreenInfo.swift in Sources */,
 				A4681FC6220113880018AB51 /* SAPlayer.swift in Sources */,
 				A4FBA6B7221BAC3D00D5A353 /* SAPlayerUpdateSubscription.swift in Sources */,
@@ -676,7 +681,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited) ";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -708,7 +713,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited) ";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";

Example/Pods/Pods.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

Example/Pods/Pods.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Example/SwiftAudioPlayer.xcodeproj/project.pbxproj

@@ -212,20 +212,20 @@
 				TargetAttributes = {
 					607FACCF1AFB9204008FA782 = {
 						CreatedOnToolsVersion = 6.3.1;
-						DevelopmentTeam = R2392A68YQ;
-						LastSwiftMigration = 1010;
+						DevelopmentTeam = H9Y26B6GZB;
+						LastSwiftMigration = 1120;
 					};
 					607FACE41AFB9204008FA782 = {
 						CreatedOnToolsVersion = 6.3.1;
-						DevelopmentTeam = R2392A68YQ;
-						LastSwiftMigration = 1010;
+						DevelopmentTeam = H9Y26B6GZB;
+						LastSwiftMigration = 1120;
 						TestTargetID = 607FACCF1AFB9204008FA782;
 					};
 				};
 			};
 			buildConfigurationList = 607FACCB1AFB9204008FA782 /* Build configuration list for PBXProject "SwiftAudioPlayer" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -475,13 +475,13 @@
 			baseConfigurationReference = 65A66AB4C3016E8BB53FF3E0 /* Pods-SwiftAudioPlayer_Example.debug.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = R2392A68YQ;
+				DEVELOPMENT_TEAM = H9Y26B6GZB;
 				INFOPLIST_FILE = SwiftAudioPlayer/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				MODULE_NAME = ExampleApp;
-				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.demo.$(PRODUCT_NAME:rfc1034identifier)";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.demo-test.SwiftAudioPlayer-Example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -490,13 +490,13 @@
 			baseConfigurationReference = 4B5DD2AE0B23A759D18926DC /* Pods-SwiftAudioPlayer_Example.release.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = R2392A68YQ;
+				DEVELOPMENT_TEAM = H9Y26B6GZB;
 				INFOPLIST_FILE = SwiftAudioPlayer/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				MODULE_NAME = ExampleApp;
-				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.demo.$(PRODUCT_NAME:rfc1034identifier)";
+				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.demo-test.SwiftAudioPlayer-Example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -504,7 +504,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = BBD877782CC67FBCC7BF7532 /* Pods-SwiftAudioPlayer_Tests.debug.xcconfig */;
 			buildSettings = {
-				DEVELOPMENT_TEAM = R2392A68YQ;
+				DEVELOPMENT_TEAM = H9Y26B6GZB;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(SDKROOT)/Developer/Library/Frameworks",
 					"$(inherited)",
@@ -517,7 +517,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/SwiftAudioPlayer_Example.app/SwiftAudioPlayer_Example";
 			};
 			name = Debug;
@@ -526,7 +526,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 0B7D1E6C00E83B4AF8AA1781 /* Pods-SwiftAudioPlayer_Tests.release.xcconfig */;
 			buildSettings = {
-				DEVELOPMENT_TEAM = R2392A68YQ;
+				DEVELOPMENT_TEAM = H9Y26B6GZB;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(SDKROOT)/Developer/Library/Frameworks",
 					"$(inherited)",
@@ -535,7 +535,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.cocoapods.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/SwiftAudioPlayer_Example.app/SwiftAudioPlayer_Example";
 			};
 			name = Release;

Example/SwiftAudioPlayer/ViewController.swift

@@ -59,7 +59,7 @@ class ViewController: UIViewController {
             self.currentUrlLocationLabel.text = "remote url: \(selectedAudio.url.absoluteString)"
         }
     }
-    
+    var freq:[Int] = [0,0,0,0,0,0,0,0,0,0]
     @IBOutlet weak var currentUrlLocationLabel: UILabel!
     @IBOutlet weak var bufferProgress: UIProgressView!
     @IBOutlet weak var scrubberSlider: UISlider!
@@ -103,6 +103,10 @@ class ViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         
+        SAPlayer.Downloader.allowUsingCellularData = true
+        
+        SAPlayer.shared.DEBUG_MODE = true
+        
         isPlayable = false
         selectedAudio = AudioInfo(index: 0)
         
@@ -117,7 +121,6 @@ class ViewController: UIViewController {
         
         _ = SAPlayer.Updates.ElapsedTime.subscribe { [weak self] (url, position) in
             guard let self = self else { return }
-            guard self.beingSeeked == false else { return }
             guard url == self.selectedAudio.url || url == self.savedUrls[self.selectedAudio] else { return }
             
             self.currentTimestampLabel.text = SAPlayer.prettifyTimestamp(position)
@@ -146,12 +149,12 @@ class ViewController: UIViewController {
             
             if self.duration == 0.0 { return }
             
-            let progress = Float((buffer.totalDurationBuffered + buffer.startingBufferTimePositon) / self.duration)
+            self.bufferProgress.progress = Float(buffer.bufferingProgress)
             
-            self.bufferProgress.progress = progress
-            
-            if progress >= 0.99 {
+            if buffer.bufferingProgress >= 0.99 {
                 self.streamButton.isEnabled = false
+            } else {
+                self.streamButton.isEnabled = true
             }
             
             self.isPlayable = buffer.isReadyForPlaying
@@ -174,6 +177,10 @@ class ViewController: UIViewController {
                 self.isPlayable = false
                 self.playPauseButton.setTitle("Loading", for: .normal)
                 return
+            case .ended:
+                self.isPlayable = false
+                self.playPauseButton.setTitle("Done", for: .normal)
+                return
             }
         }
     }
@@ -182,6 +189,16 @@ class ViewController: UIViewController {
         let node = AVAudioUnitReverb()
         SAPlayer.shared.audioModifiers.append(node)
         node.wetDryMix = 300
+        let frequency:[Int] = [60,170,310,600,1000,3000,6000,12000,14000,16000]
+        let node2 = AVAudioUnitEQ(numberOfBands:frequency.count)
+        node2.globalGain = 1
+        for i in 0...(node2.bands.count-1) {
+            node2.bands[i].frequency  = Float(frequency[i])
+            node2.bands[i].gain       = 0
+            node2.bands[i].bypass     = false
+            node2.bands[i].filterType = .parametric
+        }
+        SAPlayer.shared.audioModifiers.append(node2)
     }
 
     override func didReceiveMemoryWarning() {
@@ -241,7 +258,7 @@ class ViewController: UIViewController {
                         self.currentUrlLocationLabel.text = "saved to: \(url.lastPathComponent)"
                         self.savedUrls[self.selectedAudio] = url
                         
-                        SAPlayer.shared.initializeSavedAudio(withSavedUrl: url)
+                        SAPlayer.shared.startSavedAudio(withSavedUrl: url)
                     }
                 })
                 streamButton.isEnabled = false
@@ -256,11 +273,15 @@ class ViewController: UIViewController {
     
     @IBAction func streamTouched(_ sender: Any) {
         if !isStreaming {
-            SAPlayer.shared.initializeRemoteAudio(withRemoteUrl: selectedAudio.url)
+            SAPlayer.shared.startRemoteAudio(withRemoteUrl: selectedAudio.url)
             streamButton.setTitle("Cancel streaming", for: .normal)
             downloadButton.isEnabled = false
+            isStreaming = true
         } else {
-            // TODO
+            SAPlayer.shared.stopStreamingRemoteAudio()
+            streamButton.setTitle("Stream", for: .normal)
+            downloadButton.isEnabled = true
+            isStreaming = false
         }
     }
     
@@ -275,6 +296,19 @@ class ViewController: UIViewController {
     @IBAction func skipForwardTouched(_ sender: Any) {
         SAPlayer.shared.skipForward()
     }
+    @IBAction func setEqualizerValue(_ sender: Any) {
+        if let slider = sender as? UISlider{
+            print("slider of index:", slider.tag, "is changed to", slider.value)
+            freq[slider.tag] = Int(slider.value)
+            print("current frequency : ",freq)
+            if let node = SAPlayer.shared.audioModifiers[2] as? AVAudioUnitEQ{
+                for i in 0...(node.bands.count - 1){
+                    node.bands[i].gain = Float(freq[i])
+                }
+            }
+        }
+        
+    }
     
 }
 

README.md

@@ -4,21 +4,24 @@
 [![License](https://img.shields.io/cocoapods/l/SwiftAudioPlayer.svg?style=flat)](https://cocoapods.org/pods/SwiftAudioPlayer)
 [![Platform](https://img.shields.io/cocoapods/p/SwiftAudioPlayer.svg?style=flat)](https://cocoapods.org/pods/SwiftAudioPlayer)
 
-Swift based audio player that is able to both stream remote audio and play locally saved audio, while performing audio manipulations in real-time. Underlying using AVAudioEngine, and you can change the rate of audio (up to 32x), change pitch, and [other audio enhancements](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements).
+Swift-based audio player with AVAudioEngine as its base. Allows for: streaming online audio, playing local file, changing audio speed (3.5X, 4X, 32X), pitch, and real-time audio manipulation using custom [audio enhancements](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements).
 
-This player was originally developed to be used in a [podcast player](https://chameleonpodcast.com/). We had originally used AVPlayer for playing audio but we wanted to manipulate audio that was being streamed. We set up AVAudioEngine at first just to play a file saved on the phone and it worked great, but AVAudioEngine on its own doesn't support streaming audio as easily as AVPlayer.
+This player was built for [podcasting](https://chameleonpodcast.com/). We originally used AVPlayer for playing audio but we wanted to manipulate audio that was being streamed. We set up AVAudioEngine at first just to play a file saved on the phone and it worked great, but AVAudioEngine on its own doesn't support streaming audio as easily as AVPlayer.
 
 Thus, using [AudioToolbox](https://developer.apple.com/documentation/audiotoolbox), we are able to stream audio and convert the downloaded data into usable data for the AVAudioEngine to play. For an overview of our solution check out our [blog post](https://medium.com/chameleon-podcast/creating-an-advanced-streaming-audio-engine-for-ios-9fbc7aef4115).
 
 ### Requirements
 
-SwiftAudioPlayer is only available for iOS 10.0 and higher.
+iOS 10.0 and higher.
 
 ## Getting Started
 
-### Example Project
+### Running the Example Project
 
-To run the example project, clone the repo, and run `pod install` from the Example directory first.
+1. Clone repo
+2. CD to directory
+3. Run `pod install` in terminal
+4. Build and run
 
 ### Installation
 
@@ -31,12 +34,17 @@ pod 'SwiftAudioPlayer'
 
 ### Usage
 
+Import the player at the top:
+```swift
+import SwiftAudioPlayer
+```
+
 **Important:** For app in background downloading please refer to [note](#important-step-for-background-downloads).
 
 To play remote audio:
 ```swift
 let url = URL(string: "https://randomwebsite.com/audio.mp3")!
-SAPlayer.shared.initializeAudio(withRemoteUrl: url)
+SAPlayer.shared.startRemoteAudio(withRemoteUrl: url)
 SAPlayer.shared.play()
 ```
 
@@ -46,7 +54,7 @@ let info = SALockScreenInfo(title: "Random audio", artist: "Foo", artwork: UIIma
 SAPlayer.shared.mediaInfo = info
 ```
 
-To receive streaming progress:
+To receive streaming progress (for buffer progress %):
 ```swift
 @IBOutlet weak var bufferProgress: UIProgressView!
 
@@ -115,21 +123,21 @@ SwiftAudioPlayer is available under the MIT license. See the LICENSE file for mo
 
 Access the player and all of its fields and functions through `SAPlayer.shared`.
 
-### Playing Audio
+### Supported file types
+
+Known supported file types are `.mp3` and `.wav`.
+
+### Playing Audio (Basic Commands)
 
 To set up player with audio to play, use either: 
-* `initializeSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo?)` to play audio that is saved on the device.
-* `initializeRemoteAudio(withRemoteUrl url: URL, mediaInfo: SALockScreenInfo?)` to play audio streamed from a remote location.
+* `startSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo?)` to play audio that is saved on the device.
+* `startRemoteAudio(withRemoteUrl url: URL, mediaInfo: SALockScreenInfo?)` to play audio streamed from a remote location.
 
 Both of these expect a URL of the location of the audio and an optional media information to display on the lockscreen. 
 
 For streaming remote audio, subscribe to `SAPlayer.Updates.StreamingBuffer` for updates on streaming progress.
 
-#### Important
-
-Any audio manipulation intended to on the audio must have the nodes anticipated to use finalized before initialize is called. Look at [audio manipulation documentation](#realtime-audio-manipulation) for more information.
-
-All other basic controls are available:
+Basic controls available:
 ```swift
 play()
 pause()
@@ -139,32 +147,13 @@ skipForward()
 skipBackwards()
 ```
 
-### Realtime Audio Manipulation
-
-All audio effects on the player is done through [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/avaudiounit) nodes. These include adding reverb, changing pitch and playback rate, and adding distortion. Full list of effects available [here](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements).
-
-The effects intended to use are stored in `audioModifiers` as a list of nodes. These nodes are in the order that the engine will attach them to one another.
-
-**Note:** By default `SAPlayer` starts off with one node, an [AVAudioUnitTimePitch](https://developer.apple.com/documentation/avfoundation/avaudiounittimepitch) node, that is set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
-
 #### Important
-All the nodes intended to be used on the playing audio must be finalized before calling `initializeSavedAudio(...)` or `initializeRemoteAudio(...)`. Any changes to list of nodes after initialize is called for a given audio file will not be reflected in playback.
 
-Once all nodes are added to `audioModifiers` and the player has been initialized, any manipulations done with the nodes are performed in realtime. The example app shows manipulating the playback rate in realtime:
-
-```swift
-let speed = rateSlider.value
-if let node = SAPlayer.shared.audioModifiers[0] as? AVAudioUnitTimePitch {
-    node.rate = speed
-    SAPlayer.shared.playbackRateOfAudioChanged(rate: speed)
-}
-```
-
-**Note:** if the rate of the audio is changed, `playbackRateOfAudioChanged` should also be called to update the lockscreen's media player.
+The engine can handle audio manipulations like speed, pitch, effects, etc. To do this, nodes for effects must be finalized before initialize is called. Look at [audio manipulation documentation](#realtime-audio-manipulation) for more information.
 
 ### Lockscreen Media Player
  
-Update and set what displays on the lockscreen's media player when the player is active.
+Update and set what displays on the lockscreen's media player when the player is active. 
 
 `skipForwardSeconds` and `skipBackwardSeconds` for the intervals to skip forward and back with.
 
@@ -196,7 +185,7 @@ func application(_ application: UIApplication, handleEventsForBackgroundURLSessi
 
 ### Downloading
 
-Downloads will be held on pause when active stream is started, and will resume downloads when streaming is done.
+All downloads will be paused when audio is streamed from a URL. They will automatically resume when streaming is done.
 
 Use the following to start downloading audio in the background:
 
@@ -214,6 +203,12 @@ And use the following to stop any active or prevent future downloads of the corr
 func cancelDownload(withRemoteUrl url: URL)
 ```
 
+By default downloading will be allowed on cellular data. If you would like to turn this off set:
+```swift
+SAPlayer.Downloader.allowUsingCellularData = false
+```
+You can also retrieve what preference you have set for cellular downloads through `allowUsingCellularData`.
+
 ### Manage Downloaded
 
 Use the following to manage downloaded audio files.
@@ -233,6 +228,8 @@ Delete downloaded audio if it exists:
 func deleteDownloaded(withSavedUrl url: URL)
 ```
 
+**NOTE:** You're in charge or clearing downloads when your don't need them anymore
+
 ## SAPlayer.Updates
 
 Receive updates for changing values from the player, such as the duration, elapsed time of playing audio, download progress, and etc.
@@ -265,12 +262,12 @@ Subscribe to this to update views on changes in position of which part of audio
 ### Duration
 Payload = `Double`
 
-Changes in the duration of the current initialized audio. Especially helpful for audio that is being streamed and can change with more data.
+Changes in the duration of the current initialized audio. Especially helpful for audio that is being streamed and can change with more data. The engine makes a best effort guess as to the duration of the audio. The guess gets better with more bytes streamed from the web.
 
 ### PlayingStatus
 Payload = `SAPlayingStatus`
 
-Changes in the playing status of the player. Can be one of the following 3: `playing`, `paused`, `buffering`.
+Changes in the playing status of the player. Can be one of the following 4: `playing`, `paused`, `buffering`, `ended` (audio ended).
 
 ### StreamingBuffer
 Payload = `SAAudioAvailabilityRange`
@@ -283,3 +280,29 @@ For progress of downloading audio that saves to the phone for playback later, lo
 Payload = `Double`
 
 Changes in the progress of downloading audio in the background. This does not correspond to progress in streaming downloads, look at StreamingBuffer for streaming progress.
+
+## Audio Effects
+
+### Realtime Audio Manipulation
+
+All audio effects on the player is done through [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/avaudiounit) nodes. These include adding reverb, changing pitch and playback rate, and adding distortion. Full list of effects available [here](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements).
+
+The effects intended to use are stored in `audioModifiers` as a list of nodes. These nodes are in the order that the engine will attach them to one another.
+
+**Note:** By default `SAPlayer` starts off with one node, an [AVAudioUnitTimePitch](https://developer.apple.com/documentation/avfoundation/avaudiounittimepitch) node, that is set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+
+#### Important
+All the nodes intended to be used on the playing audio must be finalized before calling `initializeSavedAudio(...)` or `initializeRemoteAudio(...)`. Any changes to list of nodes after initialize is called for a given audio file will not be reflected in playback.
+
+Once all nodes are added to `audioModifiers` and the player has been initialized, any manipulations done with the nodes are performed in realtime. The example app shows manipulating the playback rate in realtime:
+
+```swift
+let speed = rateSlider.value
+if let node = SAPlayer.shared.audioModifiers[0] as? AVAudioUnitTimePitch {
+    node.rate = speed
+    SAPlayer.shared.playbackRateOfAudioChanged(rate: speed)
+}
+```
+
+**Note:** if the rate of the audio is changed, `playbackRateOfAudioChanged` should also be called to update the lockscreen's media player.
+

Source/Engine/AudioDiskEngine.swift

@@ -64,7 +64,7 @@ class AudioDiskEngine: AudioEngine {
             audioSampleRate = Float(audioFormat?.sampleRate ?? 44100)
             audioLengthSeconds = Float(audioLengthSamples) / audioSampleRate
             duration = Duration(audioLengthSeconds)
-            bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: 0, durationLoadedByNetwork: duration, isPlayable: true)
+            bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: 0, durationLoadedByNetwork: duration, predictedDurationToLoad: duration, isPlayable: true)
         } else {
             Log.monitor("Could not load downloaded file with url: \(url)")
         }
@@ -98,7 +98,7 @@ class AudioDiskEngine: AudioEngine {
             if state == .resumed {
                 state = .suspended
             }
-            delegate?.didEndPlaying()
+            playingStatus = .ended
         }
         
         guard audioSampleRate != 0 else {
@@ -136,6 +136,7 @@ class AudioDiskEngine: AudioEngine {
     }
     
     override func invalidate() {
+        super.invalidate()
         //Nothing to invalidate for disk
     }
 }

Source/Engine/AudioEngine.swift

@@ -27,6 +27,7 @@ import Foundation
 import AVFoundation
 
 protocol AudioEngineProtocol {
+    var engine: AVAudioEngine { get set }
     func play()
     func pause()
     func seek(toNeedle needle: Needle)
@@ -42,7 +43,7 @@ class AudioEngine: AudioEngineProtocol {
     weak var delegate:AudioEngineDelegate?
     let key:Key
     
-    let engine = AVAudioEngine()
+    var engine = AVAudioEngine()
     let playerNode = AVAudioPlayerNode()
     
     var timer: Timer?
@@ -77,12 +78,16 @@ class AudioEngine: AudioEngineProtocol {
                 return
             }
             
+            if status == .ended {
+                delegate?.didEndPlaying()
+            }
+            
             AudioClockDirector.shared.audioPlayingStatusWasChanged(key, status: status)
         }
     }
     
-    var bufferedSecondsDebouncer: SAAudioAvailabilityRange = SAAudioAvailabilityRange(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, isPlayable: false)
-    var bufferedSeconds: SAAudioAvailabilityRange =  SAAudioAvailabilityRange(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, isPlayable: false) {
+    var bufferedSecondsDebouncer: SAAudioAvailabilityRange = SAAudioAvailabilityRange(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, predictedDurationToLoad: Double.greatestFiniteMagnitude, isPlayable: false)
+    var bufferedSeconds: SAAudioAvailabilityRange =  SAAudioAvailabilityRange(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, predictedDurationToLoad: Double.greatestFiniteMagnitude, isPlayable: false) {
         didSet {
             if bufferedSeconds.startingNeedle == 0.0 && bufferedSeconds.durationLoadedByNetwork == 0.0 {
                 bufferedSecondsDebouncer = bufferedSeconds
@@ -149,7 +154,11 @@ class AudioEngine: AudioEngineProtocol {
     
     func updateIsPlaying() {
         if !bufferedSeconds.isPlayable {
-            playingStatus = .buffering
+            if bufferedSeconds.bufferingProgress > 0.999 {
+                playingStatus = .ended
+            } else {
+                playingStatus = .buffering
+            }
             return
         }
         

Source/Engine/AudioStreamEngine.swift

@@ -218,7 +218,7 @@ class AudioStreamEngine: AudioEngine {
         let range = converter.pollNetworkAudioAvailabilityRange()
         isPlayable = (numberOfBuffersScheduledInTotal >= MIN_BUFFERS_TO_BE_PLAYABLE && range.1 > 0) && predictedStreamDuration > 0
         Log.debug("loaded \(range), numberOfBuffersScheduledInTotal: \(numberOfBuffersScheduledInTotal), isPlayable: \(isPlayable)")
-        bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: range.0, durationLoadedByNetwork: range.1, isPlayable: isPlayable)
+        bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: range.0, durationLoadedByNetwork: range.1, predictedDurationToLoad: predictedStreamDuration, isPlayable: isPlayable)
     }
     
     private func updateNeedle() {
@@ -236,12 +236,6 @@ class AudioStreamEngine: AudioEngine {
         var currentTime = TimeInterval(playerTime.sampleTime) / playerTime.sampleRate
         currentTime = currentTime > 0 ? currentTime : 0
         
-        if currentTime > predictedStreamDuration {
-            Log.info("reached end of audio")
-            seek(toNeedle: 0)
-            pause()
-            delegate?.didEndPlaying()
-        }
         needle = (currentTime + currentTimeOffset)
     }
     
@@ -296,7 +290,18 @@ class AudioStreamEngine: AudioEngine {
         updateNetworkBufferRange()
     }
     
+    override func pause() {
+        queue.async { [weak self] in
+            self?.pauseHelperDispatchQueue()
+        }
+    }
+    
+    private func pauseHelperDispatchQueue() {
+        super.pause()
+    }
+    
     override func invalidate() {
+        super.invalidate()
         converter.invalidate()
     }
 }

Source/Engine/AudioThrottler.swift

@@ -97,7 +97,15 @@ class AudioThrottler: AudioThrottleable {
     private var networkData: [NetworkDataWrapper] = []
     var shouldThrottle = false
     var byteOffsetBecauseOfSeek: UInt = 0
-    var totalBytesExpected: Int64? //this got sent up twice. Once at beginning of stream and second from network seek. We honor the first send
+    
+    //This will be sent once at beginning of stream and every network seek
+    var totalBytesExpected: Int64? {
+        didSet {
+            if let bytes = totalBytesExpected {
+                delegate?.didUpdate(totalBytesExpected: Int64(byteOffsetBecauseOfSeek) + bytes)
+            }
+        }
+    }
     
     var largestPollingOffsetDifference: UInt64 = 1
     
@@ -110,9 +118,8 @@ class AudioThrottler: AudioThrottleable {
             Log.debug("received stream data of size \(pto.getData().count) and progress: \(pto.getProgress())")
             self.delegate?.didUpdate(networkStreamProgress: pto.getProgress())
             
-            if self.totalBytesExpected == nil, let totalBytesExpected = pto.getTotalBytesExpected() {
+            if let totalBytesExpected = pto.getTotalBytesExpected() {
                 self.totalBytesExpected = totalBytesExpected
-                self.delegate?.didUpdate(totalBytesExpected: totalBytesExpected)
             }
             
             let lastItem = self.networkData.last
@@ -152,30 +159,34 @@ class AudioThrottler: AudioThrottleable {
                 Log.debug("offset: \(offset) within network packet of range: \(wrappedNetworkData.startOffset) to \(wrappedNetworkData.endOffset) is next sent: \(wrappedNetworkData.isNextSent())")
                 
                 if wrappedNetworkData.alreadySent {
-                    if !wrappedNetworkData.isNextSent() {
-                        var bytesSent: UInt = 0
-                        var current = wrappedNetworkData
-                        
-                        // Sometimes the next data packet is smaller than a full audio chunk size, so we need to ensure we send up enough packets for the audio chunk. This prevented Issue #4 where tsreaming would randomly get stuck in a state needing more data up the chain.
-                        // https://github.com/tanhakabir/SwiftAudioPlayer/issues/4
-                        while bytesSent < largestPollingOffsetDifference {
-                            if let next = current.next {
-                                Log.debug("Sending next network packet with range: \(next.startOffset) to \(next.endOffset)")
+                    Log.debug("already sent offset: \(offset) within network packet of range: \(wrappedNetworkData.startOffset) to \(wrappedNetworkData.endOffset)")
+                    
+                    var bytesSent: UInt = 0
+                    var current = wrappedNetworkData
+                    
+                    // Sometimes the next data packet is smaller than a full audio chunk size, so we need to ensure we send up enough packets for the audio chunk. This prevented Issue #4 where tsreaming would randomly get stuck in a state needing more data up the chain.
+                    // https://github.com/tanhakabir/SwiftAudioPlayer/issues/4
+                    while bytesSent < largestPollingOffsetDifference {
+                        if let next = current.next {
+                            if !next.alreadySent {
+                                Log.info("Sending next network packet with range: \(next.startOffset) to \(next.endOffset), have sent \(bytesSent) bytes so far from \(largestPollingOffsetDifference) bytes")
                                 next.alreadySent = true
                                 delegate?.shouldProcess(networkData: next.data)
-                                bytesSent += next.byteCount
-                                current = next
-                            } else {
-                                return
                             }
+                            bytesSent += next.byteCount
+                            current = next
+                        } else {
+                            Log.debug("next package doesn't exist, bytes sent so far: \(bytesSent)")
+                            return
                         }
                     }
+                    
                     return
                 }
                 
-                Log.debug("Found network packet  to send with range: \(wrappedNetworkData.startOffset) to \(wrappedNetworkData.endOffset)")
-                delegate?.shouldProcess(networkData: wrappedNetworkData.data)
+                Log.info("Found network packet  to send with range: \(wrappedNetworkData.startOffset) to \(wrappedNetworkData.endOffset)")
                 wrappedNetworkData.alreadySent = true
+                delegate?.shouldProcess(networkData: wrappedNetworkData.data)
                 return
             }
         }

Source/Engine/Converter/AudioConverterErrors.swift

@@ -57,28 +57,39 @@ public enum ConverterError: LocalizedError {
     public var errorDescription: String? {
         switch self {
         case .cannotLockQueue:
+            Log.warn("Failed to lock queue")
             return "Failed to lock queue"
         case .converterFailed(let status):
+            Log.warn(localizedDescriptionFromConverterError(status))
             return localizedDescriptionFromConverterError(status)
         case .failedToCreateDestinationFormat:
+            Log.warn("Failed to create a destination (processing) format")
             return "Failed to create a destination (processing) format"
         case .failedToCreatePCMBuffer:
+            Log.warn("Failed to create PCM buffer for reading data")
             return "Failed to create PCM buffer for reading data"
         case .notEnoughData:
+            Log.warn("Not enough data for read-conversion operation")
             return "Not enough data for read-conversion operation"
         case .parserMissingDataFormat:
+            Log.warn("Parser is missing a valid data format")
             return "Parser is missing a valid data format"
         case .reachedEndOfFile:
+            Log.warn("Reached the end of the file")
             return "Reached the end of the file"
         case .unableToCreateConverter(let status):
             return localizedDescriptionFromConverterError(status)
         case .superConcerningShouldNeverHappen:
+            Log.warn("Weird unexpected reader error. Should not have happened")
             return "Weird unexpected reader error. Should not have happened"
         case .cannotCreatePCMBufferWithoutConverter:
+            Log.debug("Could not create a PCM Buffer because reader does not have a converter yet")
             return "Could not create a PCM Buffer because reader does not have a converter yet"
         case .throttleParsingBuffersForEngine:
+            Log.warn("Preventing the reader from creating more PCM buffers since the player has more than 60 seconds of audio already to play")
             return "Preventing the reader from creating more PCM buffers since the player has more than 60 seconds of audio already to play"
         case .failedToCreateParser:
+            Log.warn("Could not create a parser")
             return "Could not create a parser"
         }
     }

Source/Engine/Converter/AudioConverterListener.swift

@@ -70,7 +70,7 @@ func ConverterListener(_ converter: AudioConverterRef, _ packetCount: UnsafeMuta
     let packetByteCount = packet.count //this is not the count of an array
     ioData.pointee.mNumberBuffers = 1
     ioData.pointee.mBuffers.mData = UnsafeMutableRawPointer.allocate(byteCount: packetByteCount, alignment: 0)
-    _ = packet.withUnsafeMutableBytes({ (bytes: UnsafeMutablePointer<UInt8>) in
+    _ = packet.accessMutableBytes({ (bytes: UnsafeMutablePointer<UInt8>) in
         memcpy((ioData.pointee.mBuffers.mData?.assumingMemoryBound(to: UInt8.self))!, bytes, packetByteCount)
     })
     ioData.pointee.mBuffers.mDataByteSize = UInt32(packetByteCount)

Source/Engine/Parser/AudioParser.swift

@@ -85,7 +85,9 @@ class AudioParser: AudioParsable {
             return max(AVAudioPacketCount(parsedAudioHeaderPacketCount), AVAudioPacketCount(audioPackets.count))
         }
         
-        guard let sizeOfFileInBytes = expectedFileSizeInBytes, let bytesPerPacket = averageBytesPerPacket else {
+        let sizeOfFileInBytes: UInt64 = expectedFileSizeInBytes != nil ? expectedFileSizeInBytes! : 0
+        
+        guard let bytesPerPacket = averageBytesPerPacket else {
             return AVAudioPacketCount(0)
         }
         
@@ -111,10 +113,13 @@ class AudioParser: AudioParsable {
         didSet {
             if let audioPacketByteSize = audioPackets.last?.0?.mDataByteSize {
                 sumOfParsedAudioBytes += audioPacketByteSize
-                numberOfPacketsParsed += 1
+            } else if let audioPacketByteSize = audioPackets.last?.1.count { // for uncompressed audio there are no descriptors to say how many bytes of audio are in this packet so we approximate by data size
+                sumOfParsedAudioBytes += UInt32(audioPacketByteSize)
             }
             
-            //TODO: duration will not work with WAV or AIFF
+            numberOfPacketsParsed += 1
+            
+            //TODO: duration will not be accurate with WAV or AIFF
         }
     }
     
@@ -202,7 +207,7 @@ class AudioParser: AudioParsable {
     private func getOffset(fromPacketIndex index: AVAudioPacketCount) -> UInt64? {
         //Clear current buffer if we have audio format
         guard fileAudioFormat != nil, let bytesPerPacket = self.averageBytesPerPacket else {
-            Log.error("should not get here")
+            Log.error("should not get here \(String(describing: fileAudioFormat)) and \(String(describing: self.averageBytesPerPacket))")
             return nil
         }
         
@@ -295,7 +300,7 @@ extension AudioParser: AudioThrottleDelegate {
             let sID = self.streamID!
             let dataSize = data.count
             
-            let _ = try data.withUnsafeBytes({ (bytes:UnsafePointer<UInt8>) in
+            _ = try data.accessBytes({ (bytes: UnsafePointer<UInt8>) in
                 let result:OSStatus = AudioFileStreamParseBytes(sID, UInt32(dataSize), bytes, [])
                 guard result == noErr else {
                     Log.monitor(ParserError.failedToParseBytes(result).errorDescription as Any)

Source/Engine/Parser/AudioParserPacketListener.swift

@@ -3,7 +3,7 @@
 //  SwiftAudioPlayer
 //
 //  Created by Tanha Kabir on 2019-01-29.
-//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//  Copyright © 2019 Tanha Kabir, Jon Mercer, Moy Inzunza
 //
 //  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
 //  which was released under Apache License 2.0. Apache License 2.0 requires explicit
@@ -32,15 +32,23 @@
 import Foundation
 import AVFoundation
 
-func ParserPacketListener(_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>) {
+#if swift(>=5.3)
+func ParserPacketListener (_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>?) {
+    parserPacket(context, byteCount, packetCount, streamData, packetDescriptions)
+}
+
+#else
+func ParserPacketListener (_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>) {
+    parserPacket(context, byteCount, packetCount, streamData, packetDescriptions)
+}
+#endif
+
+func parserPacket(_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>?){
+    
     let selfAudioParser = Unmanaged<AudioParser>.fromOpaque(context).takeUnretainedValue()
     
-    //bug in core audio where this could be nil
-    let packetDescriptionOrNil: UnsafeMutablePointer<AudioStreamPacketDescription>? = packetDescriptions
-    let isCompressed = packetDescriptionOrNil != nil
-    
     guard let fileAudioFormat = selfAudioParser.fileAudioFormat else {
-        Log.monitor("shouldnot have reached packet listener without a data format")
+        Log.monitor("should not have reached packet listener without a data format")
         return
     }
     
@@ -50,15 +58,17 @@ func ParserPacketListener(_ context: UnsafeMutableRawPointer, _ byteCount: UInt3
     }
     
     //TODO refactor this after we get it working
-    if isCompressed {
+    if let compressedPacketDescriptions = packetDescriptions {  // is compressed audio (.mp3)
+        Log.debug("compressed audio")
         for i in 0 ..< Int(packetCount) {
-            let audioPacketDescription = packetDescriptions[i]
+            let audioPacketDescription = compressedPacketDescriptions[i]
             let audioPacketStart = Int(audioPacketDescription.mStartOffset)
             let audioPacketSize = Int(audioPacketDescription.mDataByteSize)
             let audioPacketData = Data(bytes: streamData.advanced(by: audioPacketStart), count: audioPacketSize)
             selfAudioParser.audioPackets.append((audioPacketDescription,audioPacketData))
         }
-    } else {
+    } else { // not compressed audio (.wav)
+        Log.debug("uncompressed audio")
         let format = fileAudioFormat.streamDescription.pointee
         let bytesPerAudioPacket = Int(format.mBytesPerPacket)
         for i in 0 ..< Int(packetCount) {
@@ -68,4 +78,5 @@ func ParserPacketListener(_ context: UnsafeMutableRawPointer, _ byteCount: UInt3
             selfAudioParser.audioPackets.append((nil, audioPacketData))
         }
     }
+    
 }

Source/Engine/SAAudioAvailabilityRange.swift

@@ -29,8 +29,15 @@ import Foundation
 public struct SAAudioAvailabilityRange {
     let startingNeedle: Needle
     let durationLoadedByNetwork: Duration
+    let predictedDurationToLoad: Duration
     let isPlayable: Bool
     
+    public var bufferingProgress: Double {
+        get {
+            return (startingNeedle + durationLoadedByNetwork) / predictedDurationToLoad
+        }
+    }
+    
     public var startingBufferTimePositon: Double {
         get {
             return startingNeedle
@@ -52,4 +59,8 @@ public struct SAAudioAvailabilityRange {
     public func contains(_ needle: Double) -> Bool {
         return needle >= startingNeedle && (needle - startingNeedle) < durationLoadedByNetwork
     }
+    
+    public func isCompletelyBuffered() -> Bool {
+        return startingNeedle + durationLoadedByNetwork >= predictedDurationToLoad
+    }
 }

Source/Engine/SAPlayingStatus.swift

@@ -30,4 +30,5 @@ public enum SAPlayingStatus {
     case playing
     case paused
     case buffering
+    case ended
 }

Source/LockScreenViewProtocol.swift

@@ -35,6 +35,10 @@ protocol LockScreenViewProtocol {
 }
 
 extension LockScreenViewProtocol {
+    func clearLockScreenInfo() {
+         MPNowPlayingInfoCenter.default().nowPlayingInfo = [:]
+    }
+    
     @available(iOS 10.0, *)
     func setLockScreenInfo(withMediaInfo info: SALockScreenInfo?, duration: Duration) {
         var nowPlayingInfo:[String : Any] = [:]

Source/Model/AudioDataManager.swift

@@ -32,6 +32,7 @@ protocol AudioDataManagable {
     var allowCellular: Bool { get set }
     
     func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> ())
+    func setAllowCellularDownloadPreference(_ preference: Bool)
     
     func clear()
     
@@ -51,7 +52,7 @@ protocol AudioDataManagable {
 }
 
 class AudioDataManager: AudioDataManagable {
-    var allowCellular: Bool = false
+    var allowCellular: Bool = true
     
     static let shared: AudioDataManagable = AudioDataManager()
     
@@ -99,6 +100,10 @@ class AudioDataManager: AudioDataManagable {
         backgroundCompletion = completionHandler
     }
     
+    func setAllowCellularDownloadPreference(_ preference: Bool) {
+        allowCellular = preference
+    }
+    
     func attach(callback: @escaping (_ id: ID, _ progress: Double)->()) {
         globalDownloadProgressCallback = callback
     }

Source/Model/Downloading/AudioDownloadWorker.swift

@@ -271,21 +271,18 @@ extension AudioDownloadWorker {
             return lhs.id == rhs.id && lhs.remoteUrl == rhs.remoteUrl
         }
         
-        var hashValue: Int {
-            return id.hashValue ^ remoteUrl.hashValue
-        }
-        
         let id: ID
         let remoteUrl: URL
         let rank: Int
         var completionHandlers: [(URL) -> ()]
+        
+        func hash(into hasher: inout Hasher) {
+            hasher.combine(id)
+            hasher.combine(remoteUrl)
+        }
     }
     
     private class ActiveDownload: Hashable {
-        var hashValue: Int {
-            return info.id.hashValue ^ task.hashValue
-        }
-        
         static func == (lhs: AudioDownloadWorker.ActiveDownload, rhs: AudioDownloadWorker.ActiveDownload) -> Bool {
             return lhs.info.id == rhs.info.id
         }
@@ -299,6 +296,11 @@ extension AudioDownloadWorker {
             self.info = info
             self.task = task
         }
+        
+        func hash(into hasher: inout Hasher) {
+            hasher.combine(info.id)
+            hasher.combine(task)
+        }
     }
 }
 

Source/Model/Downloading/FileStorage.swift

@@ -103,12 +103,15 @@ extension FileStorage {
         }
         
         static func locate(_ id: ID) -> URL? {
-            let urls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
-            
-            for url in urls {
-                if url.absoluteString.contains(id) && url.pathExtension != "" {
-                    _ = getUrl(givenId: id, andFileExtension: url.pathExtension)
-                    return url
+            let folderUrls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
+            guard folderUrls.count != 0 else { return nil }
+
+            if let urls = try? FileManager.default.contentsOfDirectory(at: folderUrls[0], includingPropertiesForKeys: nil) {
+                for url in urls {
+                    if url.absoluteString.contains(id) && url.pathExtension != "" {
+                        _ = getUrl(givenId: id, andFileExtension: url.pathExtension)
+                        return url
+                    }
                 }
             }
             return nil

Source/Model/Streaming/AudioStreamWorker.swift

@@ -243,15 +243,19 @@ extension AudioStreamWorker: URLSessionDataDelegate {
         }
         
         guard self.task == dataTask else {
-            Log.error("stream_error not the same task") //Probably because of seek
+            Log.error("stream_error not the same task 638283") //Probably because of seek
             return
         }
         
-        guard let totalBytesExpected = totalBytesExpectedForCurrentStream, totalBytesExpected > 0 else {
+        guard var totalBytesExpected = totalBytesExpectedForCurrentStream else {
             Log.monitor("should not be called 223r2")
             return
         }
         
+        if totalBytesExpected <= 0 {
+            totalBytesExpected = totalBytesReceived
+        }
+        
         totalBytesReceived = totalBytesReceived + Int64(data.count)
         let progress = Double(totalBytesReceived)/Double(totalBytesExpected)
         
@@ -267,7 +271,7 @@ extension AudioStreamWorker: URLSessionDataDelegate {
         }
         
         guard self.task == dataTask else {
-            Log.error("stream_error not the same task")
+            Log.error("stream_error not the same task 517253")
             return
         }
         
@@ -289,8 +293,8 @@ extension AudioStreamWorker: URLSessionDataDelegate {
             return
         }
         
-        guard self.task == task else {
-            Log.error("stream_error not the same task")
+        if self.task != task && self.task != nil {
+            Log.error("stream_error not the same task 3901833")
             return
         }
         

Source/SAPlayer.swift

@@ -27,6 +27,16 @@ import Foundation
 import AVFoundation
 
 public class SAPlayer {
+    public var DEBUG_MODE: Bool = false {
+        didSet {
+            if(DEBUG_MODE) {
+                logLevel = LogLevel.EXTERNAL_DEBUG
+            } else {
+                logLevel = LogLevel.MONITOR
+            }
+        }
+    }
+    
     /**
      Access to the player.
      */
@@ -35,6 +45,44 @@ public class SAPlayer {
     private var presenter: SAPlayerPresenter!
     private var player: AudioEngine?
     
+    /**
+    Access the engine of the player. Engine is nil if player has not been initialized with audio.
+     
+     - Important: Changes to the engine are not safe guarded, thus unknown behaviour can arise from changing the engine. Just be wary and read [documentation of AVAudioEngine](https://developer.apple.com/documentation/avfoundation/avaudioengine) well when modifying,
+    */
+    public var engine: AVAudioEngine? {
+        get {
+            return player?.engine
+        }
+    }
+    
+    /**
+    Access the player node of the engine. Node is nil if player has not been initialized with audio.
+     
+     - Important: Changes to the engine and this node are not safe guarded, thus unknown behaviour can arise from changing the engine or this node. Just be wary and read [documentation of AVAudioEngine](https://developer.apple.com/documentation/avfoundation/avaudioengine) well when modifying,
+    */
+    public var playerNode: AVAudioPlayerNode? {
+        get {
+            return player?.playerNode
+        }
+    }
+    
+    /**
+    Corresponding to the overall volume of the player. Volume's default value is 1.0 and the range of valid values is 0.0 to 1.0. Volume is nil if no audio has been initialized yet.
+    */
+    public var volume: Float? {
+        get {
+            return player?.engine.mainMixerNode.volume
+        }
+        
+        set {
+            guard let value = newValue else { return }
+            guard value >= 0.0 && value <= 1.0 else { return }
+            
+            player?.engine.mainMixerNode.volume = value
+        }
+    }
+    
     /**
      Corresponding to the skipping forward button on the media player on the lockscreen. Default is set to 30 seconds.
      */
@@ -72,11 +120,17 @@ public class SAPlayer {
          }
          ````
          Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+     
+     For more details on pitch modifiers for playback rate changes please look at [developer.apple.com/forums/thread/6050](https://developer.apple.com/forums/thread/6050).
+     
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
      */
     public var audioModifiers: [AVAudioUnit] = []
     
     /**
      Total duration of current audio initialized. Returns nil if no audio is initialized in player.
+     
+     - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, this value will be constantly updating to best known value at the time.
      */
     public var duration: Double? {
         get {
@@ -142,6 +196,22 @@ public class SAPlayer {
         audioModifiers.append(AVAudioUnitTimePitch(audioComponentDescription: componentDescription))
     }
     
+    /**
+     Clears all [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) modifiers intended to be used for realtime audio manipulation.
+     */
+    public func clearAudioModifiers() {
+        audioModifiers.removeAll()
+    }
+    
+    /**
+     Append an [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) modifier to the list of modifiers used for realtime audio manipulation. The modifier will be added to the end of the list.
+
+     - Parameter modifier: The modifier to append.
+     */
+    public func addAudioModifier(_ modifer: AVAudioUnit) {
+        audioModifiers.append(modifer)
+    }
+    
     /**
      Formats a textual representation of a given timestamp for display in hh:MM:SS format, that is hours:minutes:seconds.
 
@@ -169,21 +239,27 @@ public class SAPlayer {
 //MARK: - External Player Controls
 extension SAPlayer {
     /**
-     Toggles between the play and pause state of the player if the player is not buffering (thus is playable).
+     Toggles between the play and pause state of the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+     
+     - Note: If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
      */
     public func togglePlayAndPause() {
         presenter.handleTogglePlayingAndPausing()
     }
     
     /**
-     Attempts to play the player even if nothing playable is loaded (aka still in buffering state or no audio is initialized).
+     Attempts to play the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+     
+     - Note: If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
      */
     public func play() {
         presenter.handlePlay()
     }
     
     /**
-     Attempts to pause the player even if nothing playable is loaded (aka still in buffering state or no audio is initialized).
+     Attempts to pause the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+     
+     - Note:If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
      */
     public func pause() {
         presenter.handlePause()
@@ -221,6 +297,23 @@ extension SAPlayer {
     /**
      If using an AVAudioUnitTimePitch, it's important to notify the player that the rate at which the audio playing has changed to keep the media player in the lockscreen up to date. This is only important for playback rate changes.
      
+     - Note: By default this engine has added a pitch modifier node to change the pitch so that on playback rate changes of spoken word the pitch isn't shifted.
+     
+     The component description of this node is:
+     ````
+     var componentDescription: AudioComponentDescription {
+        get {
+            var ret = AudioComponentDescription()
+            ret.componentType = kAudioUnitType_FormatConverter
+            ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+            return ret
+        }
+     }
+     ````
+     Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+     
+     For more details on pitch modifiers for playback rate changes please look at [developer.apple.com/forums/thread/6050](https://developer.apple.com/forums/thread/6050).
+     
      - Parameter rate: The current rate at which the audio is playing.
      */
     public func playbackRateOfAudioChanged(rate: Float) {
@@ -232,28 +325,86 @@ extension SAPlayer {
      
      - Important: If intending to use [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) audio modifiers during playback, the list of audio modifiers under `SAPlayer.shared.audioModifiers` must be finalized before calling this function. After all realtime audio manipulations within the this will be effective.
      
+     - Note: The default list already has an AVAudioUnitTimePitch node first in the list. This node is specifically set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+     
+         The component description of this node is:
+         ````
+         var componentDescription: AudioComponentDescription {
+            get {
+                var ret = AudioComponentDescription()
+                ret.componentType = kAudioUnitType_FormatConverter
+                ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+                return ret
+            }
+         }
+         ````
+         Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+     
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
+     
      - Parameter withSavedUrl: The URL of the audio saved on the device.
      - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
      */
+    public func startSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
+        self.mediaInfo = mediaInfo
+        presenter.handlePlaySavedAudio(withSavedUrl: url)
+    }
+    
+    @available(*, deprecated, renamed: "startSavedAudio")
     public func initializeSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
         self.mediaInfo = mediaInfo
         presenter.handlePlaySavedAudio(withSavedUrl: url)
     }
     
     /**
-     Sets up player to play audio that will be streamed from a remote location.
+     Sets up player to play audio that will be streamed from a remote location. After this is called, it will connect to the server and start to receive and process data. The player is not playable the SAAudioAvailabilityRange notifies that player is ready for playing (you can subscribe to these updates through `SAPlayer.Updates.StreamingBuffer`). You can alternatively see when the player is available to play by subscribing to `SAPlayer.Updates.PlayingStatus` and waiting for a status that isn't `.buffering`.
      
      - Important: If intending to use [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) audio modifiers during playback, the list of audio modifiers under `SAPlayer.shared.audioModifiers` must be finalized before calling this function. After all realtime audio manipulations within the this will be effective.
      
+     - Note: The default list already has an AVAudioUnitTimePitch node first in the list. This node is specifically set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+     
+         The component description of this node is:
+         ````
+         var componentDescription: AudioComponentDescription {
+            get {
+                var ret = AudioComponentDescription()
+                ret.componentType = kAudioUnitType_FormatConverter
+                ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+                return ret
+            }
+         }
+         ````
+         Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+     
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
+     
      - Note: Subscribe to `SAPlayer.Updates.StreamingBuffer` to see updates in streaming progress.
      
      - Parameter withRemoteUrl: The URL of the remote audio.
      - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
      */
+    public func startRemoteAudio(withRemoteUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
+        self.mediaInfo = mediaInfo
+        presenter.handlePlayStreamedAudio(withRemoteUrl: url)
+    }
+    
+    @available(*, deprecated, renamed: "startRemoteAudio")
     public func initializeRemoteAudio(withRemoteUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
         self.mediaInfo = mediaInfo
         presenter.handlePlayStreamedAudio(withRemoteUrl: url)
     }
+    
+    public func stopStreamingRemoteAudio() {
+        presenter.handleStopStreamingAudio()
+    }
+    
+    /**
+     Resets the player to the state before initializing audio and setting media info.
+     */
+    public func clear() {
+        player = nil
+        presenter.handleClear()
+    }
 }
 
 
@@ -271,6 +422,12 @@ extension SAPlayer: SAPlayerDelegate {
         player = AudioStreamEngine(withRemoteUrl: url, delegate: presenter)
     }
     
+    func clearEngine() {
+        player?.pause()
+        player?.invalidate()
+        player = nil
+    }
+    
     func playEngine() {
         becomeDeviceAudioPlayer()
         player?.play()

Source/SAPlayerDelegate.swift

@@ -32,6 +32,7 @@ protocol SAPlayerDelegate: AnyObject, LockScreenViewProtocol {
     
     func startAudioDownloaded(withSavedUrl url: AudioURL)
     func startAudioStreamed(withRemoteUrl url: AudioURL)
+    func clearEngine()
     func playEngine()
     func pauseEngine()
     func seekEngine(toNeedle needle: Needle) //TODO ensure that engine cleans up out of bounds

Source/SAPlayerDownloader.swift

@@ -100,5 +100,14 @@ extension SAPlayer {
         public static func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> ()) {
             AudioDataManager.shared.setBackgroundCompletionHandler(completionHandler)
         }
+        
+        /**
+         Whether downloading audio on cellular data is allowed. By default this is set to `true`.
+         */
+        public static var allowUsingCellularData = true {
+            didSet {
+                AudioDataManager.shared.setAllowCellularDownloadPreference(allowUsingCellularData)
+            }
+        }
     }
 }

Source/SAPlayerPresenter.swift

@@ -60,6 +60,18 @@ class SAPlayerPresenter {
         urlKeyMap[url.key] = url
     }
     
+    func handleClear() {
+        needle = nil
+        duration = nil
+        key = nil
+        mediaInfo = nil
+        delegate?.clearLockScreenInfo()
+        
+        AudioClockDirector.shared.detachFromChangesInDuration(withID: durationRef)
+        AudioClockDirector.shared.detachFromChangesInNeedle(withID: needleRef)
+        AudioClockDirector.shared.detachFromChangesInPlayingStatus(withID: playingStatusRef)
+    }
+    
     func handlePlaySavedAudio(withSavedUrl url: URL) {
         attachForUpdates(url: url)
         delegate?.startAudioDownloaded(withSavedUrl: url)
@@ -71,9 +83,7 @@ class SAPlayerPresenter {
     }
     
     private func attachForUpdates(url: URL) {
-        AudioClockDirector.shared.detachFromChangesInDuration(withID: durationRef)
-        AudioClockDirector.shared.detachFromChangesInNeedle(withID: needleRef)
-        AudioClockDirector.shared.detachFromChangesInPlayingStatus(withID: playingStatusRef)
+        detachFromUpdates()
         
         self.key = url.key
         urlKeyMap[url.key] = url
@@ -113,6 +123,17 @@ class SAPlayerPresenter {
         })
     }
     
+    private func detachFromUpdates() {
+        AudioClockDirector.shared.detachFromChangesInDuration(withID: durationRef)
+        AudioClockDirector.shared.detachFromChangesInNeedle(withID: needleRef)
+        AudioClockDirector.shared.detachFromChangesInPlayingStatus(withID: playingStatusRef)
+    }
+    
+    func handleStopStreamingAudio() {
+        delegate?.clearEngine()
+        detachFromUpdates()
+    }
+    
     @available(iOS 10.0, *)
     func handleLockscreenInfo(info: SALockScreenInfo?) {
         self.mediaInfo = info

Source/SAPlayerUpdateSubscription.swift

@@ -66,12 +66,16 @@ extension SAPlayer {
         
         /**
          Updates to changes in the duration of the current initialized audio. Especially helpful for audio that is being streamed and can change with more data.
+         
+         - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, duration will be constantly updating to best known value at the time (which is the seconds buffered currently and not necessarily the actual total duration of audio).
          */
         public struct Duration {
             
             /**
              Subscribe to updates to changes in duration of the current audio initialized.
              
+             - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, duration will be constantly updating to best known value at the time (which is the seconds buffered currently and not necessarily the actual total duration of audio).
+             
              - Note: It's recommended to have a weak reference to a class that uses this function
              
              - Parameter closure: The closure that will receive the updates of the changes in duration.
@@ -136,6 +140,8 @@ extension SAPlayer {
             /**
              Subscribe to updates to changes in the progress of downloading audio for streaming. Information about range of audio available and if the audio is playable. Look at SAAudioAvailabilityRange for more information. For progress of downloading audio that saves to the phone for playback later, look at AudioDownloading instead.
              
+             - Note: For live streams that don't have an expected audio length from the beginning of the stream; the duration is constantly changing and equal to the total seconds buffered from the SAAudioAvailabilityRange.
+             
              - Note: It's recommended to have a weak reference to a class that uses this function
              
              - Parameter closure: The closure that will receive the updates of the changes in duration.

Source/Util/Data.swift

@@ -0,0 +1,54 @@
+//
+//  Data.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-11-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+extension Data {
+    // Introduced in Swift 5, withUnsafeBytes using UnsafePointers is deprecated
+    // https://mjtsai.com/blog/2019/03/27/swift-5-released/
+    func accessBytes<R>(_ body: (UnsafePointer<UInt8>) throws -> R) rethrows -> R {
+        return try withUnsafeBytes { (rawBufferPointer: UnsafeRawBufferPointer) -> R in
+            let unsafeBufferPointer = rawBufferPointer.bindMemory(to: UInt8.self)
+            guard let unsafePointer = unsafeBufferPointer.baseAddress else {
+                Log.error("")
+                var int: UInt8 = 0
+                return try body(&int)
+            }
+            return try body(unsafePointer)
+        }
+    }
+    
+    mutating func accessMutableBytes<R>(_ body: (UnsafeMutablePointer<UInt8>) throws -> R) rethrows -> R {
+        return try withUnsafeMutableBytes { (rawBufferPointer: UnsafeMutableRawBufferPointer) -> R in
+            let unsafeMutableBufferPointer = rawBufferPointer.bindMemory(to: UInt8.self)
+            guard let unsafeMutablePointer = unsafeMutableBufferPointer.baseAddress else {
+                Log.error("")
+                var int: UInt8 = 0
+                return try body(&int)
+            }
+            return try body(unsafeMutablePointer)
+        }
+    }
+}

Source/Util/Log.swift

@@ -9,22 +9,23 @@
 import Foundation
 import os.log
 
+// Possible levels of log messages to log
+enum LogLevel: Int {
+    case DEBUG = 1
+    case INFO = 2
+    case WARN = 3
+    case ERROR = 4
+    case EXTERNAL_DEBUG = 5
+    case MONITOR = 6
+    case TEST = 7
+}
+
+// Specify which types of log messages to display. Default level is set to WARN, which means Log will print any log messages of type only WARN, ERROR, MONITOR, and TEST. To print DEBUG and INFO logs, set the level to a lower value.
+var logLevel: LogLevel = LogLevel.MONITOR
+
 class Log {
     private init() {}
     
-    // Possible levels of log messages to log
-    public enum LogLevel: Int {
-        case DEBUG = 1
-        case INFO = 2
-        case WARN = 3
-        case ERROR = 4
-        case MONITOR = 5
-        case TEST = 6
-    }
-    
-    // Specify which types of log messages to display. Default level is set to WARN, which means Log will print any log messages of type only WARN, ERROR, MONITOR, and TEST. To print DEBUG and INFO logs, set the level to a lower value.
-    public static var logLevel: LogLevel = LogLevel.MONITOR
-    
     // Used for OSLog
     private static let SUBSYSTEM: String = "com.SwiftAudioPlayer"
     
@@ -68,6 +69,11 @@ class Log {
             let log = OSLog(subsystem: SUBSYSTEM, category: "ERROR 🛑🛑🛑🛑")
             os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
         }
+        
+        if logLevel.rawValue <= LogLevel.EXTERNAL_DEBUG.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "WARNING")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
     }
     
     /**
@@ -86,7 +92,7 @@ class Log {
     public static func monitor(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
         let fileName = URLUtil.getNameFromStringPath(classPath)
         if logLevel.rawValue <= LogLevel.ERROR.rawValue {
-            let log = OSLog(subsystem: SUBSYSTEM, category: "MONITOR 🔥🔥🔥🔥")
+            let log = OSLog(subsystem: SUBSYSTEM, category: "ERROR 🔥🔥🔥🔥")
             os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
         }
     }
@@ -110,6 +116,11 @@ class Log {
             let log = OSLog(subsystem: SUBSYSTEM, category: "WARN  ⚠️⚠️⚠️⚠️")
             os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
         }
+        
+        if logLevel.rawValue <= LogLevel.EXTERNAL_DEBUG.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "DEBUG")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
     }
     
     /**

SwiftAudioPlayer.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SwiftAudioPlayer'
-  s.version          = '1.3.0'
+  s.version          = '2.13.0'
   s.summary          = 'SwiftAudioPlayer is a Swift based audio player that can handle streaming from a remote location and audio manipulation.'
 
 # This description is used to generate tags and improve search results.
@@ -31,7 +31,7 @@ SwiftAudioPlayer is a Swift based audio player that can handle streaming from a
   s.ios.deployment_target = '10.0'
 
   s.source_files = 'Source/**/*'
-  s.swift_version = '4.2'
+  s.swift_version = '5.0'
   
   # s.resource_bundles = {
   #   'SwiftAudioPlayer' => ['SwiftAudioPlayer/Assets/*.png']