Caps-iOS/CapCollector/Capture/PhotoCaptureHandler.swift

/*
See LICENSE.txt for this sample’s licensing information.

Abstract:
Photo capture delegate.
*/

import AVFoundation
import Photos
import UIKit

protocol PhotoCaptureHandlerDelegate {

    func didCapture(_ image: UIImage?)
}

class PhotoCaptureHandler: NSObject {
	
    var delegate: PhotoCaptureHandlerDelegate?

    var photoSettings: AVCapturePhotoSettings {
        let photoSettings = AVCapturePhotoSettings()
        photoSettings.flashMode = .off
        return photoSettings
    }
}

extension PhotoCaptureHandler: AVCapturePhotoCaptureDelegate {
    /*
     This extension includes all the delegate callbacks for AVCapturePhotoCaptureDelegate protocol
    */

    func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {

        guard error == nil else {
            log("PhotoCaptureHandler: \(error!)")
            delegate?.didCapture(nil)
            return
        }

        guard let cgImage = photo.cgImageRepresentation()?.takeUnretainedValue() else {
            log("PhotoCaptureHandler: No image captured")
            delegate?.didCapture(nil)
            return
        }

        let image = UIImage(cgImage: cgImage, scale: 1.0, orientation: .right)
        DispatchQueue.main.async {
            self.delegate?.didCapture(image)
        }
    }
}

extension PhotoCaptureHandler: Logger {
    
}