iPhone 模拟器和网络摄像头

iPhone 模拟器和网络摄像头的使用

swift
import UIKit
import AVFoundation
class ViewController: UIViewController {
    var captureSession: AVCaptureSession?
    var videoPreviewLayer: AVCaptureVideoPreviewLayer?
    override func viewDidLoad() {
        super.viewDidLoad()
        // 创建模拟器窗口
        let simulatorView = UIView(frame: CGRect(x: 0, y: 0, width: 320, height: 480))
        view.addSubview(simulatorView)
        // 创建摄像头预览层
        videoPreviewLayer = AVCaptureVideoPreviewLayer()
        videoPreviewLayer?.frame = simulatorView.bounds
        simulatorView.layer.addSublayer(videoPreviewLayer!)
        // 获取摄像头设备
        guard let captureDevice = AVCaptureDevice.default(for: .video) else { return }
        do {
            // 创建摄像头输入
            let input = try AVCaptureDeviceInput(device: captureDevice)
            // 创建摄像头输出
            let output = AVCaptureVideoDataOutput()
            output.setSampleBufferDelegate(self, queue: DispatchQueue.global(qos: .default))
            // 创建捕捉会话
            captureSession = AVCaptureSession()
            captureSession?.addInput(input)
            captureSession?.addOutput(output)
            // 开始捕捉
            captureSession?.startRunning()
        } catch {
            print(error.localizedDescription)
        }
    }
}
extension ViewController: AVCaptureVideoDataOutputSampleBufferDelegate {
    func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
        // 处理捕捉到的画面数据
        // ...
    }
}