forked from mirrors/linphone-iphone
64 lines
1.9 KiB
Swift
64 lines
1.9 KiB
Swift
//
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// QRScannerController.swift
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// Linphone
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//
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// Created by Benoît Martins on 05/10/2023.
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//
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import Foundation
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import SwiftUI
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import AVFoundation
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class QRScannerController: UIViewController {
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var captureSession = AVCaptureSession()
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var videoPreviewLayer: AVCaptureVideoPreviewLayer?
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var qrCodeFrameView: UIView?
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var delegate: AVCaptureMetadataOutputObjectsDelegate?
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override func viewDidLoad() {
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super.viewDidLoad()
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// Get the back-facing camera for capturing videos
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guard let captureDevice = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) else {
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print("Failed to get the camera device")
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return
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}
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let videoInput: AVCaptureDeviceInput
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do {
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// Get an instance of the AVCaptureDeviceInput class using the previous device object.
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videoInput = try AVCaptureDeviceInput(device: captureDevice)
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} catch {
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// If any error occurs, simply print it out and don't continue any more.
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print(error)
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return
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}
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// Set the input device on the capture session.
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captureSession.addInput(videoInput)
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// Initialize a AVCaptureMetadataOutput object and set it as the output device to the capture session.
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let captureMetadataOutput = AVCaptureMetadataOutput()
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captureSession.addOutput(captureMetadataOutput)
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// Set delegate and use the default dispatch queue to execute the call back
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captureMetadataOutput.setMetadataObjectsDelegate(delegate, queue: DispatchQueue.main)
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captureMetadataOutput.metadataObjectTypes = [ .qr ]
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// Initialize the video preview layer and add it as a sublayer to the viewPreview view's layer.
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videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
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videoPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
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videoPreviewLayer?.frame = view.layer.bounds
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view.layer.addSublayer(videoPreviewLayer!)
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// Start video capture.
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DispatchQueue.global(qos: .background).async {
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self.captureSession.startRunning()
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}
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}
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}
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