Play audio while downloading without downloading file twice? - ios

Question

I would like to write an iOS app that plays an audio file as soon as there is enough data while continuing to download. It seems that you can either download and play when the download is finishing (Using NSURLProtocol to implement play while downloading for AVPlayer on iOS) or continuously stream without getting to save a file (Playing audio file while I download it). Is there any way to download and play at the same time without downloading two copies of the file?

Answer 1

You can do that with the help of AVAssetResourceLoader and AVPlayer
Here is the link of the tutorial
http://leshkoapps.com/wordpress/audio-streaming-and-caching-in-ios-using-avassetresourceloader-and-avplayer/
And here is the Github repo for that
https://github.com/leshkoapps/AVAssetResourceLoader

Answer 2

here you can use below functions without download (Streaming)
import AVFoundation
var progressTimer:Timer?
{
willSet {
progressTimer?.invalidate()
}
}
var playerStream: AVPlayer?
var playerItem: AVPlayerItem?
func playerStream(urlStream : String)
{
if let playerStream = playerStream
{
if playerStream.isPlaying
{
stopProgressTimer()
playerStream.pause()
}
else
{
startProgressTimer()
playerStream.play()
}
}
else
{
if let urlStr = urlStream.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
{
if let TempURL = URL.init(string: urlStr)
{
playerItem = AVPlayerItem(url: TempURL)
playerStream = AVPlayer(playerItem: playerItem)
NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidPlayToEndTime), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: playerItem)
}
}
}
}
func playerItemDidPlayToEndTime() {
stopProgressTimer()
self.playProgressView.progress = 0.0
if let playerStream = self.playerStream
{
playerStream.replaceCurrentItem(with: playerItem)
playerStream.seek(to: kCMTimeZero)
// playerStream.seek(to: .zero) swift 4.0
}
}
func stopProgressTimer() {
progressTimer?.invalidate()
progressTimer = nil
}
func startProgressTimer()
{
if #available(iOS 10.0, *) {
progressTimer = Timer.scheduledTimer(withTimeInterval: 0.1, repeats: true){_ in
self.updateProgressTimer()
}
}
else {
progressTimer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(self.updateProgressTimer), userInfo: nil, repeats: true)
}
}
#objc func updateProgressTimer()
{
if let playerItem = playerItem
{
if let pa = playerStream
{
let floatTime = Float(CMTimeGetSeconds(pa.currentTime()))
let floatTimeDu = Float(CMTimeGetSeconds(playerItem.duration))
playProgressView.progress = Double(floatTime / floatTimeDu)
}
}
}