swiftでAVCapturePhotoSettingsのプロパティを使って写真に位置情報を記録したい。

Question

###前提・実現したいこと
swiftでAVCapturePhotoSettingsのプロパティを使って写真に位置情報を記録したい。
アップルのサンプルコードと、こちらのサイトを参考にさせていただきました。https://qiita.com/BlueEventHorizon/items/cda4661d98af768ae5d9

###発生している問題・エラーメッセージ
カメラで撮影ができない。位置情報を保存するプロパティにエラーが出来る。

Expected '{' to start getter definition

###該当のソースコード

import UIKit
import CoreLocation
import AVFoundation
import ImageIO
import Photos


class CameraViewController: UIViewController,  CLLocationManagerDelegate, AVCaptureFileOutputRecordingDelegate  {
	
	
    override func viewDidLoad() {
		super.viewDidLoad()
		
	cameraButton.isEnabled = false
				photoButton.isEnabled = false
				
		previewView.session = session
		
				switch AVCaptureDevice.authorizationStatus(for: .video) {
            case .authorized:
								break
			
			case .notDetermined:
				
				sessionQueue.suspend()
				AVCaptureDevice.requestAccess(for: .video, completionHandler: { granted in
					if !granted {
						self.setupResult = .notAuthorized
					}
					self.sessionQueue.resume()
				})
			
			default:
				
				setupResult = .notAuthorized
		}
		
				*/
		sessionQueue.async {
			self.configureSession()
		}
	}
	
//字数制限により省略
    
	var metadata: [String : Any] { get set }
            func configure(location: CLLocation)
            {
            var photoSettings = AVCapturePhotoSettings()

          
            // Capture HEIF photo when supported, with flash set to auto and high resolution photo enabled.
                
            if  self.photoOutput.availablePhotoCodecTypes.contains(.hevc) {
            
                
            photoSettings = AVCapturePhotoSettings(format: [AVVideoCodecKey: AVVideoCodecType.hevc])
                

            }
            
            if self.videoDeviceInput.device.isFlashAvailable {
                photoSettings.flashMode = .auto
            }
            
			photoSettings.isHighResolutionPhotoEnabled = true
            
			if !photoSettings.__availablePreviewPhotoPixelFormatTypes.isEmpty {
				photoSettings.previewPhotoFormat = [kCVPixelBufferPixelFormatTypeKey as String: photoSettings.__availablePreviewPhotoPixelFormatTypes.first!]
			}
			if self.livePhotoMode == .on && self.photoOutput.isLivePhotoCaptureSupported { // Live Photo capture is not supported in movie mode.
				let livePhotoMovieFileName = NSUUID().uuidString
				let livePhotoMovieFilePath = (NSTemporaryDirectory() as NSString).appendingPathComponent((livePhotoMovieFileName as NSString).appendingPathExtension("mov")!)
				photoSettings.livePhotoMovieFileURL = URL(fileURLWithPath: livePhotoMovieFilePath)
			}
            
            if self.depthDataDeliveryMode == .on && self.photoOutput.isDepthDataDeliverySupported {
                photoSettings.isDepthDataDeliveryEnabled = true
            } else {
                photoSettings.isDepthDataDeliveryEnabled = false
            }
			
			// Use a separate object for the photo capture delegate to isolate each capture life cycle.
			let photoCaptureProcessor = PhotoCaptureProcessor(with: photoSettings, willCapturePhotoAnimation: {
					DispatchQueue.main.async {
						self.previewView.videoPreviewLayer.opacity = 0
						UIView.animate(withDuration: 0.25) {
							self.previewView.videoPreviewLayer.opacity = 1
						}
					}
				}, livePhotoCaptureHandler: { capturing in
					/*
						Because Live Photo captures can overlap, we need to keep track of the
						number of in progress Live Photo captures to ensure that the
						Live Photo label stays visible during these captures.
					*/
					self.sessionQueue.async {
						if capturing {
							self.inProgressLivePhotoCapturesCount += 1
						} else {
							self.inProgressLivePhotoCapturesCount -= 1
						}
						
						let inProgressLivePhotoCapturesCount = self.inProgressLivePhotoCapturesCount
						DispatchQueue.main.async {
							if inProgressLivePhotoCapturesCount > 0 {
								self.capturingLivePhotoLabel.isHidden = false
							} else if inProgressLivePhotoCapturesCount == 0 {
								self.capturingLivePhotoLabel.isHidden = true
							} else {
								print("Error: In progress live photo capture count is less than 0")
							}
						}
					}
				}, completionHandler: { photoCaptureProcessor in
					// When the capture is complete, remove a reference to the photo capture delegate so it can be deallocated.
					self.sessionQueue.async {
						self.inProgressPhotoCaptureDelegates[photoCaptureProcessor.requestedPhotoSettings.uniqueID] = nil
					}
				}
			)
			
			/*
				The Photo Output keeps a weak reference to the photo capture delegate so
				we store it in an array to maintain a strong reference to this object
				until the capture is completed.
			*/
			self.inProgressPhotoCaptureDelegates[photoCaptureProcessor.requestedPhotoSettings.uniqueID] = photoCaptureProcessor
			self.photoOutput.capturePhoto(with: photoSettings, delegate: photoCaptureProcessor)
		
	}
        }
    }
    private func setMeta(location: CLLocation) -> Dictionary<String, Any>
    {
        // メタデータ
        //exif情報を準備する
        let gps = NSMutableDictionary()
        var exif = Dictionary<String, Any>()
        var meta = Dictionary<String, Any>()
        
        // 位置情報
        gps.setObject(location.timestamp,   forKey: kCGImagePropertyGPSDateStamp as! NSCopying)
        gps.setObject(location.timestamp,   forKey: kCGImagePropertyGPSTimeStamp as! NSCopying)
        
        // 経度の設定
        
        // 緯度情報を取得
        var latitude = location.coordinate.latitude
        var gpsLatitudeRef = "N"        // 北緯
        if latitude < 0
        {
            latitude = -latitude;       // マイナス値はプラス値に反転
            gpsLatitudeRef = "S"        // 南緯
        }
        gps.setObject(gpsLatitudeRef,   forKey: kCGImagePropertyGPSLatitudeRef as! NSCopying)
        gps.setObject(latitude,         forKey: kCGImagePropertyGPSLatitude as! NSCopying)
        
        // 経度情報を取得
        var longitude = location.coordinate.longitude
        var gpsLongitudeRef = "E"       // 東経
        if longitude < 0
        {
            longitude = -longitude;     // マイナス値はプラス値に反転
            gpsLongitudeRef = "W"       // 西経
        }
        gps.setObject(gpsLongitudeRef,  forKey: kCGImagePropertyGPSLongitudeRef as! NSCopying)
        gps.setObject(longitude,        forKey: kCGImagePropertyGPSLongitude as! NSCopying)
        
        gps.setObject(0,                forKey: kCGImagePropertyGPSAltitudeRef as! NSCopying)
        gps.setObject(0,                forKey: kCGImagePropertyGPSAltitude as! NSCopying)
        
        exif[kCGImagePropertyGPSDictionary as String] = gps
        
        exif[kCGImagePropertyExifUserComment as String] = "コメント"
        
        meta[kCGImagePropertyExifDictionary as String] = exif
        
        return meta
    }
    
//字数制限により省略
extension AVCaptureVideoOrientation {
    init?(deviceOrientation: UIDeviceOrientation) {
        switch deviceOrientation {
        case .portrait: self = .portrait
        case .portraitUpsideDown: self = .portraitUpsideDown
        case .landscapeLeft: self = .landscapeRight
        case .landscapeRight: self = .landscapeLeft
        default: return nil
        }
    }
    
    init?(interfaceOrientation: UIInterfaceOrientation) {
        switch interfaceOrientation {
        case .portrait: self = .portrait
        case .portraitUpsideDown: self = .portraitUpsideDown
        case .landscapeLeft: self = .landscapeLeft
        case .landscapeRight: self = .landscapeRight
        default: return nil
        }
        
        
    }
    

    
    
    
}
extension AVCaptureDevice.DiscoverySession {
    var uniqueDevicePositionsCount: Int {
        var uniqueDevicePositions: [AVCaptureDevice.Position] = []
        
        for device in devices {
            if !uniqueDevicePositions.contains(device.position) {
                uniqueDevicePositions.append(device.position)
            }
        }
        
        return uniqueDevicePositions.count
}
}

###試したこと
var metadata: [String : Any] { get set }に格納するのは分かっていますが、その書き方が分かりません。

###補足情報(言語/FW/ツール等のバージョンなど)
より詳細な情報

Comments

[fuzzball]

どこでエラーが出るのでしょうか？

[huyuhimituhiro]

申し訳ございません。 var metadata: [String : Any] { get set }の部分です。

Answer 1

var metadata: [String : Any] { get set }

というのは、そういう風に定義されてるいるよ、ということで自分で書かなくてもいいです。
参考にしている記事のように、

photoSettings.metadata = self.setMeta(location: location)

でいけると思うのですが、同じようにしない（出来ない）理由がありますか？

Comments

[huyuhimituhiro]

そういう風定義されているとの説明だけで、書く必要なかったのですね。ありがとうございました。