experimental set download location

Fix seek fail issue when data is not loaded for AudioStreamEngine.

Source/Engine/AudioDiskEngine.swift

@@ -115,10 +115,11 @@ class AudioDiskEngine: AudioEngine {
         }
         
         let playing = playerNode.isPlaying
+        let seekToNeedle = needle > Needle(duration) ? Needle(duration) : needle
         
-        self.needle = needle // to tick while paused
+        self.needle = seekToNeedle // to tick while paused
         
-        seekFrame = AVAudioFramePosition(Float(needle) * audioSampleRate)
+        seekFrame = AVAudioFramePosition(Float(seekToNeedle) * audioSampleRate)
         seekFrame = max(seekFrame, 0)
         seekFrame = min(seekFrame, audioLengthSamples)
         currentPosition = seekFrame

Source/Engine/AudioStreamEngine.swift

@@ -273,6 +273,15 @@ class AudioStreamEngine: AudioEngine {
     //MARK:- Overriden From Parent
     override func seek(toNeedle needle: Needle) {
         Log.info("didSeek to needle: \(needle)")
+
+        // if not playable (data not loaded etc), duration could be zero.
+        guard isPlayable else {
+            if predictedStreamDuration == 0 {
+                seekNeedleCommandBeforeEngineWasReady = needle
+            }
+            return
+        }
+
         guard needle < (ceil(predictedStreamDuration)) else {
             if !isPlayable {
                 seekNeedleCommandBeforeEngineWasReady = needle

Source/Model/AudioDataManager.swift

@@ -30,10 +30,12 @@ protocol AudioDataManagable {
     var numberOfActive: Int { get }
     
     var allowCellular: Bool { get set }
+    var downloadDirectory: FileManager.SearchPathDirectory { get }
     
     func setHTTPHeaderFields(_ fields: [String: String]?)
     func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> ())
     func setAllowCellularDownloadPreference(_ preference: Bool)
+    func setDownloadDirectory(_ dir: FileManager.SearchPathDirectory)
     
     func clear()
     
@@ -54,6 +56,7 @@ protocol AudioDataManagable {
 
 class AudioDataManager: AudioDataManagable {
     var allowCellular: Bool = true
+    var downloadDirectory: FileManager.SearchPathDirectory = .documentDirectory
     
     static let shared: AudioDataManagable = AudioDataManager()
     
@@ -110,6 +113,10 @@ class AudioDataManager: AudioDataManagable {
         allowCellular = preference
     }
     
+    func setDownloadDirectory(_ dir: FileManager.SearchPathDirectory) {
+        downloadDirectory = dir
+    }
+    
     func attach(callback: @escaping (_ id: ID, _ progress: Double)->()) {
         globalDownloadProgressCallback = callback
     }

Source/Model/Downloading/FileStorage.swift

@@ -64,7 +64,7 @@ struct FileStorage {
 // MARK:- Audio
 extension FileStorage {
     struct Audio {
-        private static let directory: FileManager.SearchPathDirectory = .documentDirectory
+        private static let directory: FileManager.SearchPathDirectory = AudioDataManager.shared.downloadDirectory
         private init() {}
         
         static func isStored(_ id: ID) -> Bool {
@@ -103,7 +103,7 @@ extension FileStorage {
         }
         
         static func locate(_ id: ID) -> URL? {
-            let folderUrls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
+            let folderUrls = FileManager.default.urls(for: directory, in: .userDomainMask)
             guard folderUrls.count != 0 else { return nil }
 
             if let urls = try? FileManager.default.contentsOfDirectory(at: folderUrls[0], includingPropertiesForKeys: nil) {

Source/SAPlayer.swift

@@ -585,8 +585,7 @@ extension SAPlayer: SAPlayerDelegate {
     }
     
     internal func seekEngine(toNeedle needle: Needle) {
-        var seekToNeedle = needle < 0 ? 0 : needle
-        seekToNeedle = needle > Needle(duration ?? 0) ? Needle(duration ?? 0) : needle
+        let seekToNeedle = needle < 0 ? 0 : needle
         player?.seek(toNeedle: seekToNeedle)
     }
 }

Source/SAPlayerDownloader.swift

@@ -109,5 +109,14 @@ extension SAPlayer {
                 AudioDataManager.shared.setAllowCellularDownloadPreference(allowUsingCellularData)
             }
         }
+        
+        /**
+         EXPERIMENTAL!
+         */
+        public static var downloadDirectory: FileManager.SearchPathDirectory = .documentDirectory {
+            didSet {
+                AudioDataManager.shared.setDownloadDirectory(downloadDirectory)
+            }
+        }
     }
 }

SwiftAudioPlayer.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SwiftAudioPlayer'
-  s.version          = '7.0.1'
+  s.version          = '7.1.0'
   s.summary          = 'SwiftAudioPlayer is a Swift based audio player that can handle streaming from a remote location and audio manipulation.'
 
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