how to add a delay to mp3 streaming in swift AVPlayer-CodePudding

I use AVPlayer for streaming mp3 file from the internet and i want to give the user a option to delay the audio the seconds he want.

Is there any tip of how to do it or what should i start looking for?

I am trying whit something like this:

 player?.pause()

 DispatchQueue.main.asyncAfter(deadline: .now()   5, execute: {
     self.player.play()
 })

CodePudding user response：

You can make 5 seconds delay with following code:

    if let currentTime:CMTime  = self.avPlayer.currentItem?.currentTime() {
        let fiveSeconds = CMTime.init(seconds: 5, preferredTimescale: 100)
        let fiveSecondsBackTime = currentTime - fiveSeconds
        self.avPlayer.seek(to: fiveSecondsBackTime)
    }

CodePudding user response：

In my SwiftUI project it is working exactly as you mentioned above. I implemented a looping video player (see below) with a 10 seconds delay (just for testing) and it works well. Of course you would have to add a var with the user input for the desired delay duration time. Do you face any problems?

//
//  PlayerView.swift
//
//  Created by Sebastian on 11.08.22.
//

import Foundation
import SwiftUI
import AVKit
import AVFoundation
import UIKit

struct PlayerView: UIViewRepresentable {
    func updateUIView(_ uiView: UIView, context: UIViewRepresentableContext<PlayerView>) {
    }

    func makeUIView(context: Context) -> UIView {
        return LoopingPlayerUIView(frame: .zero)
    }
}

class LoopingPlayerUIView: UIView {
    private let playerLayer = AVPlayerLayer()
    private var playerLooper: AVPlayerLooper?
    let videos = ["video_3", "video_10", "video_8", "video_9"]
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    override init(frame: CGRect) {
        super.init(frame: frame)
        // Load the resource -> h
        let fileUrl = Bundle.main.url(forResource: videos.randomElement(), withExtension: "mov")!
        let asset = AVAsset(url: fileUrl)
        let item = AVPlayerItem(asset: asset)
        // Setup the player
        let player = AVQueuePlayer()
        player.volume = 0
        
        playerLayer.player = player
        playerLayer.videoGravity = .resizeAspectFill
        layer.addSublayer(playerLayer)
        // Create a new player looper with the queue player and template item
        playerLooper = AVPlayerLooper(player: player, templateItem: item)
        // Start the movie
        DispatchQueue.main.asyncAfter(deadline: .now()   10) {
            player.play()
        }
    }
    override func layoutSubviews() {
        super.layoutSubviews()
        playerLayer.frame = bounds
    }
}

All I do is to use the video player in the view.

//
//  ContentView.swift
//  SwiftTest
//
//  Created by Sebastian on 11.08.22.
//

import SwiftUI

struct ContentView: View {
    
    var body: some View {

       ZStack() {

            GeometryReader{ geo -> AnyView in
                return AnyView(

                   PlayerView()
                      .aspectRatio(contentMode: .fill)
                      .frame(width: geo.size.width, height: geo.size.height 100)
                      .edgesIgnoringSafeArea(.all)
                      .overlay(Color.black.opacity(0.2))
                      .blur(radius: 1)
                      .edgesIgnoringSafeArea(.all)
                )
            }
        }
    }
}

Best, Sebastian