I am currently trying to implement a camera live feed to my app. I've got it setup but somehow it's not working as expected. As far as I understand, captureOutput
should be executed every time a frame is recognized and the print message should be output in console, but somehow it's not - the console won't show the print command.
Does anybody see any possible mistake inside of the code?
I don't know whether that's connected to my problem, but at start of the app the console shows the following:
[BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C1.1:2][0x106b24530] get output frames failed, state 8196
import UIKit
import AVKit
import Vision
class CameraViewController: UIViewController, AVCaptureVideoDataOutputSampleBufferDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let captureSession = AVCaptureSession()
guard let captureDevice = AVCaptureDevice.default(for: .video) else { return }
guard let input = try? AVCaptureDeviceInput(device: captureDevice) else{ return }
captureSession.addInput(input)
captureSession.startRunning()
let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
view.layer.addSublayer(previewLayer)
previewLayer.frame = view.frame
let dataOutput = AVCaptureVideoDataOutput()
dataOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "videoQueue"))
captureSession.addOutput(dataOutput)
// let request = VNCoreMLRequest
// VNImageRequestHandler(cgImage: <#T##CGImage#>, options: [:]).perform(request)
}
func captureOutput(_ output: AVCaptureOutput, didDrop sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
print("Es hat funktioniert")
}
}
You need to implement captureOutput(_:didOutput:from:)
not captureOutput(_:didDrop:from:)
func captureOutput(_ output: AVCaptureOutput,
didOutput sampleBuffer: CMSampleBuffer,
from connection: AVCaptureConnection) {
print("Es hat funktioniert")
}