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Fix race condition with the player queue

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This commit is contained in:
ronaldheft 2022-08-31 23:15:25 -04:00
parent defd895995
commit 6257c6488b
1 changed files with 39 additions and 27 deletions
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66
ios/App/Shared/player/AudioPlayer.swift
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@ -195,36 +195,48 @@ class AudioPlayer: NSObject {
private func setupQueueItemStatusObserver() {
self.queueItemStatusObserver?.invalidate()
self.queueItemStatusObserver = self.audioPlayer.currentItem?.observe(\.status, options: [.new, .old], changeHandler: { (playerItem, change) in
guard let playbackSession = self.getPlaybackSession() else {
NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.failed.rawValue), object: nil)
return
}
if (playerItem.status == .readyToPlay) {
NSLog("queueStatusObserver: Current Item Ready to play. PlayWhenReady: \(self.playWhenReady)")
self.updateNowPlaying()
// Seek the player before initializing, so a currentTime of 0 does not appear in MediaProgress / session
let firstReady = self.status < 0
if firstReady || self.playWhenReady {
self.seek(playbackSession.currentTime, from: "queueItemStatusObserver")
}
// Mark the player as ready
self.status = 0
// Start the player, if requested
if self.playWhenReady {
self.playWhenReady = false
self.play()
}
} else if (playerItem.status == .failed) {
NSLog("queueStatusObserver: FAILED \(playerItem.error?.localizedDescription ?? "")")
NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.failed.rawValue), object: nil)
}
let status = self.audioPlayer.currentItem?.status.rawValue ?? -1
NSLog("queueStatusObserver: Setting up status=\(status)")
// First item already loaded, we need to fire manually
if status == 1, let playerItem = self.audioPlayer.currentItem {
self.handleQueueItemStatus(playerItem: playerItem)
}
// Now listen for future updates
self.queueItemStatusObserver = self.audioPlayer.currentItem?.observe(\.status, options: [.new, .old], changeHandler: { playerItem, change in
self.handleQueueItemStatus(playerItem: playerItem)
})
}
private func handleQueueItemStatus(playerItem: AVPlayerItem) {
NSLog("queueStatusObserver: Current item status changed")
guard let playbackSession = self.getPlaybackSession() else {
NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.failed.rawValue), object: nil)
return
}
if (playerItem.status == .readyToPlay) {
NSLog("queueStatusObserver: Current Item Ready to play. PlayWhenReady: \(self.playWhenReady)")
// Seek the player before initializing, so a currentTime of 0 does not appear in MediaProgress / session
let firstReady = self.status < 0
if firstReady || self.playWhenReady {
self.seek(playbackSession.currentTime, from: "queueItemStatusObserver")
}
// Mark the player as ready
self.status = 0
// Start the player, if requested
if self.playWhenReady {
self.playWhenReady = false
self.play()
}
} else if (playerItem.status == .failed) {
NSLog("queueStatusObserver: FAILED \(playerItem.error?.localizedDescription ?? "")")
NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.failed.rawValue), object: nil)
}
}
private func startPausedTimer() {
guard self.pausedTimer == nil else { return }
self.queue.async {