録音時間の制限について

実現したいこと

・録音時間を制限したい
（例）録音ボタンを押して○○秒経つと録音が停止する

試したこと

・「swift 録音　制限」などで検索するがヒットしない
・appstoreで既存のアプリ（録音時間を制限している）が見当たらない

Main,storyboard

ViewController.swift

import UIKit
import AVFoundation

class ViewController: UIViewController {

    var audioRecorder: AVAudioRecorder!
    var audioEngine: AVAudioEngine!
    var audioFile: AVAudioFile!
    var audioPlayerNode: AVAudioPlayerNode!

    override func viewDidLoad() {
        super.viewDidLoad()

        let session = AVAudioSession.sharedInstance()

        do {
            try session.setCategory(.playAndRecord, mode: .default)
            try session.setActive(true)

            let settings = [
                AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
                AVSampleRateKey: 44100,
                AVNumberOfChannelsKey: 2,
                AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue
            ]

            audioRecorder = try AVAudioRecorder(url: getAudioFileUrl(), settings: settings)
            audioRecorder.delegate = self as? AVAudioRecorderDelegate
        } catch let error {
            print(error)
        }

    }

    @IBAction func record(_ sender: Any) {
        if !audioRecorder.isRecording {
            audioRecorder.record()
        } else {
            audioRecorder.stop()
        }
    }


    @IBAction func play(_ sender: Any) {
        audioEngine = AVAudioEngine()
        do {
            audioFile = try AVAudioFile(forReading: getAudioFileUrl())

            audioPlayerNode = AVAudioPlayerNode()
            audioEngine.attach(audioPlayerNode)
            audioEngine.connect(audioPlayerNode, to: audioEngine.outputNode, format: audioFile.processingFormat)

            audioPlayerNode.stop()
            audioPlayerNode.scheduleFile(audioFile, at: nil)

            try audioEngine.start()
            audioPlayerNode.play()
        } catch let error {
            print(error)
        }
    }

    func getAudioFileUrl() -> URL {
        let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
        let docsDirect = paths[0]
        let audioUrl = docsDirect.appendingPathComponent("recording.m4a")

        return audioUrl
    }

}