I am making a custom camera view controller using AVFoundation frameworks in Swift 4/iOS 11/Xcode 9.1
My code for setUpCaptureSession: (credit to brian voong of letsbuildthatapp.com, I have followed his IG/firebase tutorial and made extensive use of his work!)
fileprivate func setupCaptureSession() {
let captureSession = AVCaptureSession()
//setup inputs
let captureDevice = AVCaptureDevice.default(for: AVMediaType.video)
do {
let input = try AVCaptureDeviceInput(device: captureDevice!)
if captureSession.canAddInput(input) {
captureSession.addInput(input)
}
} catch let err {
debugPrint(err)
}
//setup outputs
if captureSession.canAddOutput(output) {
captureSession.addOutput(output)
}
//setup output preview
let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.frame = photoPreView.frame
view.layer.addSublayer(previewLayer)
captureSession.startRunning()
}
photoPreView is a view I manually added to the storyboard with aspect ratio 1:1. my issue is visible in this screenshot below:
The capture session is indeed within photoPreView.frame but I want the capture session to fill up the entire area and zoom in , much like how the square mode of the native iOS camera works, or how Instagram's photo capture appears as well.
