feat: disable custom camera session when running on simulator

Author: tkmn0

SimpleWebRTC/CameraSession/CameraSession.swift

@@ -25,6 +25,7 @@ class CameraSession: NSObject, AVCaptureVideoDataOutputSampleBufferDelegate {
 
     func setupSession(){
         self.session = AVCaptureSession()
+        session?.sessionPreset = AVCaptureSession.Preset.medium
         self.device = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front)
         guard let input = try? AVCaptureDeviceInput(device: device!) else {
             print("Caught exception!")

SimpleWebRTC/ViewController/ViewController.swift

@@ -34,7 +34,7 @@ class ViewController: UIViewController, WebSocketDelegate, WebRTCClientDelegate,
     var cameraSession: CameraSession?
 
     // You can create video source from CMSampleBuffer :)
-    var useCustomCapturer: Bool = false
+    var useCustomCapturer: Bool = true
 
     // Constants
     let ipAddress: String = "192.168.1.139"
@@ -52,6 +52,10 @@ class ViewController: UIViewController, WebSocketDelegate, WebRTCClientDelegate,
     //MARK: - ViewController Override Methods
     override func viewDidLoad() {
         super.viewDidLoad()
+        #if targetEnvironment(simulator)
+        // simulator does not have camera
+        self.useCustomCapturer = false
+        #endif
 
         webRTCClient = WebRTCClient()
         webRTCClient.delegate = self