AVFoundation

import AVFoundation

class AudioPlayer {
    var audioPlayer: AVAudioPlayer?
    
    func playSound(named soundName: String) {
        guard let url = Bundle.main.url(forResource: soundName, withExtension: "mp3") else {
            print("Sound file not found")
            return
        }
        
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: url)
            audioPlayer?.play()
        } catch {
            print("Error playing sound: \(error)")
        }
    }
}

import AVFoundation

class AudioRecorder {
    var audioRecorder: AVAudioRecorder?
    
    func startRecording() {
        let audioFilename = getDocumentsDirectory().appendingPathComponent("recording.m4a")
        
        let settings = [
            AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
            AVSampleRateKey: 12000,
            AVNumberOfChannelsKey: 1,
            AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue
        ]
        
        do {
            audioRecorder = try AVAudioRecorder(url: audioFilename, settings: settings)
            audioRecorder?.record()
        } catch {
            print("Could not start recording")
        }
    }
    
    func stopRecording() {
        audioRecorder?.stop()
    }
    
    func getDocumentsDirectory() -> URL {
        FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
    }
}

import AVFoundation
import UIKit

class CameraViewController: UIViewController {
    var captureSession: AVCaptureSession?
    var previewLayer: AVCaptureVideoPreviewLayer?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupCamera()
    }
    
    func setupCamera() {
        captureSession = AVCaptureSession()
        
        guard let videoCaptureDevice = AVCaptureDevice.default(for: .video) else { return }
        let videoInput: AVCaptureDeviceInput
        
        do {
            videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)
        } catch {
            return
        }
        
        if (captureSession?.canAddInput(videoInput) ?? false) {
            captureSession?.addInput(videoInput)
        }
        
        previewLayer = AVCaptureVideoPreviewLayer(session: captureSession!)
        previewLayer?.frame = view.layer.bounds
        previewLayer?.videoGravity = .resizeAspectFill
        view.layer.addSublayer(previewLayer!)
        
        captureSession?.startRunning()
    }
}