我有一个应用程序，应该采取3张照片的用户在一个时间间隔（说200毫秒）。图片时，用户点击一个按钮。
现在，为了确保每200毫秒拍摄一次照片，我想访问照片拍摄的时间，但我正在与文档作斗争。
以下是我正在使用的：

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

    print("this is the call Back called when photo is done processing")
    if let error = error {
        print("error occured : \(error.localizedDescription)")
    }
    let dataProvider = CGDataProvider(data: dataImage as CFData)
    let cgImageRef: CGImage! = CGImage(jpegDataProviderSource: dataProvider!, decode: nil, shouldInterpolate: true, intent: .defaultIntent)
    let image = UIImage(cgImage: cgImageRef, scale: 1.0, orientation: UIImage.Orientation.right)

    // do any of the above stuff contain time of when image was created? or can I derive it from any of them
}