I am using AVFoundation for live camera view. I can get my device from the current video input (of type AVCaptureDeviceInput) like:
let device = videoInput.device
The device's active format has a isPortraitEffectSupported. How can I set the Portrait Effect on and off in live camera view?
I setup the camera like this:
private var videoInput: AVCaptureDeviceInput!
private let session = AVCaptureSession()
private(set) var isSessionRunning = false
private var renderingEnabled = true
private let videoDataOutput = AVCaptureVideoDataOutput()
private let photoOutput = AVCapturePhotoOutput()
private(set) var cameraPosition: AVCaptureDevice.Position = .front
func configureSession() {
sessionQueue.async { [weak self] in
guard let strongSelf = self else { return }
if strongSelf.setupResult != .success {
return
}
let defaultVideoDevice: AVCaptureDevice? = strongSelf.videoDeviceDiscoverySession.devices.first(where: {$0.position == strongSelf.cameraPosition})
guard let videoDevice = defaultVideoDevice else {
print("Could not find any video device")
strongSelf.setupResult = .configurationFailed
return
}
do {
strongSelf.videoInput = try AVCaptureDeviceInput(device: videoDevice)
} catch {
print("Could not create video device input: \(error)")
strongSelf.setupResult = .configurationFailed
return
}
strongSelf.session.beginConfiguration()
strongSelf.session.sessionPreset = AVCaptureSession.Preset.photo
// Add a video input.
guard strongSelf.session.canAddInput(strongSelf.videoInput) else {
print("Could not add video device input to the session")
strongSelf.setupResult = .configurationFailed
strongSelf.session.commitConfiguration()
return
}
strongSelf.session.addInput(strongSelf.videoInput)
// Add a video data output
if strongSelf.session.canAddOutput(strongSelf.videoDataOutput) {
strongSelf.session.addOutput(strongSelf.videoDataOutput)
strongSelf.videoDataOutput.videoSettings = [kCVPixelBufferPixelFormatTypeKey as String: Int(kCVPixelFormatType_32BGRA)]
strongSelf.videoDataOutput.setSampleBufferDelegate(self, queue: strongSelf.dataOutputQueue)
} else {
print("Could not add video data output to the session")
strongSelf.setupResult = .configurationFailed
strongSelf.session.commitConfiguration()
return
}
// Add photo output
if strongSelf.session.canAddOutput(strongSelf.photoOutput) {
strongSelf.session.addOutput(strongSelf.photoOutput)
strongSelf.photoOutput.isHighResolutionCaptureEnabled = true
} else {
print("Could not add photo output to the session")
strongSelf.setupResult = .configurationFailed
strongSelf.session.commitConfiguration()
return
}
strongSelf.session.commitConfiguration()
}
}
func prepareSession(completion: @escaping (SessionSetupResult) -> Void) {
sessionQueue.async { [weak self] in
guard let strongSelf = self else { return }
switch strongSelf.setupResult {
case .success:
strongSelf.addObservers()
if strongSelf.photoOutput.isDepthDataDeliverySupported {
strongSelf.photoOutput.isDepthDataDeliveryEnabled = true
}
if let photoOrientation = AVCaptureVideoOrientation(interfaceOrientation: interfaceOrientation) {
if let unwrappedPhotoOutputConnection = strongSelf.photoOutput.connection(with: .video) {
unwrappedPhotoOutputConnection.videoOrientation = photoOrientation
}
}
strongSelf.dataOutputQueue.async {
strongSelf.renderingEnabled = true
}
strongSelf.session.startRunning()
strongSelf.isSessionRunning = strongSelf.session.isRunning
strongSelf.mainQueue.async {
strongSelf.previewView.videoPreviewLayer.session = strongSelf.session
}
completion(strongSelf.setupResult)
default:
completion(strongSelf.setupResult)
}
}
}
Then to I set isPortraitEffectsMatteDeliveryEnabled like this:
func setPortraitAffectActive(_ state: Bool) {
sessionQueue.async { [weak self] in
guard let strongSelf = self else { return }
if strongSelf.photoOutput.isPortraitEffectsMatteDeliverySupported {
strongSelf.photoOutput.isPortraitEffectsMatteDeliveryEnabled = state
}
}
}
However, I don't see any Portrait Effect in the live camera view! Any ideas why?
