[Fix] Ensure layers are not rotated unless autorate is enabled

CHANGELOG.md

@@ -1,8 +1,11 @@
 # CHANGELOG
 
 ## Master
+
+## Version 4.0.0
 - Fixes an issue when Record button isn't getting correct callbacks
 - Fixes an when didFinishRecordingVideo wouldn't get a callback
+- Using allowAutoRotate=false prevents layer from rotating. 
 
 ## Version 3.0.0
 - Swift 4.2 support

Source/SwiftyCamViewController.swift

@@ -346,8 +346,12 @@ open class SwiftyCamViewController: UIViewController {
     /// ViewDidLayoutSubviews() Implementation
     private func updatePreviewLayer(layer: AVCaptureConnection, orientation: AVCaptureVideoOrientation) {
 
-        layer.videoOrientation = orientation
-
+        if(shouldAutorotate){
+            layer.videoOrientation = orientation
+        } else {
+            layer.videoOrientation = .portrait
+        }
+        
         previewLayer.frame = self.view.bounds
 
     }