Added new delegate function

Source/SwiftyCamViewController.swift

@@ -1049,6 +1049,9 @@ extension SwiftyCamViewController : AVCaptureFileOutputRecordingDelegate {
 		}
 		if error != nil {
 			print("[SwiftyCam]: Movie file finishing error: \(error)")
+            DispatchQueue.main.async {
+                self.cameraDelegate?.swiftyCam(self, didFailToRecordVideo: error)
+            }
 		} else {
 			//Call delegate function with the URL of the outputfile
 			DispatchQueue.main.async {

Source/SwiftyCamViewControllerDelegate.swift

@@ -58,6 +58,15 @@ public protocol SwiftyCamViewControllerDelegate: class {
     
     func swiftyCam(_ swiftyCam: SwiftyCamViewController, didFinishProcessVideoAt url: URL)
     
+    
+    /**
+     SwiftyCamViewControllerDelegate function called when SwiftyCamViewController fails to record a video.
+     
+     - Parameter swiftyCam: Current SwiftyCamViewController session
+     - Parameter error: An error object that describes the problem
+     */
+    func swiftyCam(_ swiftyCam: SwiftyCamViewController, didFailToRecordVideo error: Error)
+    
     /**
      SwiftyCamViewControllerDelegate function called when SwiftyCamViewController switches between front or rear camera.
      
@@ -65,6 +74,7 @@ public protocol SwiftyCamViewControllerDelegate: class {
      - Parameter camera: Current camera selection
      */
     
+    
     func swiftyCam(_ swiftyCam: SwiftyCamViewController, didSwitchCameras camera: SwiftyCamViewController.CameraSelection)
     
     /**
@@ -108,6 +118,9 @@ public extension SwiftyCamViewControllerDelegate {
         // Optional
     }
     
+    func swiftyCam(_ swiftyCam: SwiftyCamViewController, didFailToRecordVideo error: Error) {
+        // Optional
+    }
     
     func swiftyCam(_ swiftyCam: SwiftyCamViewController, didSwitchCameras camera: SwiftyCamViewController.CameraSelection) {
         // Optional