Get capture from camera to custom UIView

// Vladimir Zhelnov - neatek.pw - Web/iOS dev
//
//  Class_CameraView.swift
//  iconbaseApp
//
//  Created by Vladimir on 04.11.16.
//  Copyright © 2016 Vladimir Zhelnov. All rights reserved.
//

import UIKit
//import Haneke
//import Kingfisher
import AVFoundation

@available(iOS 10.0, *)
class Class_CameraView: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBOutlet weak var cameraView: UIView!

    var captureSession = AVCaptureSession();
    var sessionOutput = AVCapturePhotoOutput();
    var sessionOutputSetting = AVCapturePhotoSettings(format: [AVVideoCodecKey:AVVideoCodecJPEG]);
    var previewLayer = AVCaptureVideoPreviewLayer();

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        UIApplication.shared.statusBarStyle = UIStatusBarStyle.lightContent
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        previewLayer.frame = cameraView.bounds
    }

    override func viewWillAppear(_ animated: Bool) {
        let deviceDiscoverySession = AVCaptureDeviceDiscoverySession(deviceTypes: [AVCaptureDeviceType.builtInDuoCamera, AVCaptureDeviceType.builtInTelephotoCamera,AVCaptureDeviceType.builtInWideAngleCamera], mediaType: AVMediaTypeVideo, position: AVCaptureDevicePosition.unspecified)
        for device in (deviceDiscoverySession?.devices)! {
            if(device.position == AVCaptureDevicePosition.front){
                do{
                    let input = try AVCaptureDeviceInput(device: device)
                    if(captureSession.canAddInput(input)){
                        captureSession.addInput(input);

                        if(captureSession.canAddOutput(sessionOutput)){
                            captureSession.addOutput(sessionOutput);
                            previewLayer = AVCaptureVideoPreviewLayer(session: captureSession);
                            previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
                            previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.portrait;
                            cameraView.layer.addSublayer(previewLayer);

                            captureSession.startRunning()
                            print("Start Running")
                        } else {
                            print("Cant add output")
                        }
                    } else {
                        print("Cant add input")
                    }
                }
                catch{
                    print("exception!");
                }
            }
        }
    }
}