Merge pull request #4 from dsmurfin/Remove-Video-Device

Adds a method to remove an existing video capture device

Author: dsmurfin

Sources/VideoIO/Camera.swift

@@ -151,6 +151,17 @@ public class Camera {
         }
     }
 
+    public func removeVideoCaptureDevice() {
+        self.captureSession.beginConfiguration()
+
+        if let currentVideoDeviceInput = self.videoDeviceInput {
+            self.captureSession.removeInput(currentVideoDeviceInput)
+            self.videoDeviceInput = nil
+        }
+        
+        self.captureSession.commitConfiguration()
+    }
+    
     public var videoCaptureConnection: AVCaptureConnection? {
         return self.videoDataOutput?.connection(with: .video)
     }