From 67a6aec1325c076b0cea4a81f292ec5ac5d9f83f Mon Sep 17 00:00:00 2001
From: ronaldheft <ron@ronaldheft.com>
Date: Tue, 23 Aug 2022 22:06:41 -0400
Subject: [PATCH] Move AudioPlayer tasks off the main queue

---
 ios/App/Shared/player/AudioPlayer.swift | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/ios/App/Shared/player/AudioPlayer.swift b/ios/App/Shared/player/AudioPlayer.swift
index 4037e4fe..6f41a2a7 100644
--- a/ios/App/Shared/player/AudioPlayer.swift
+++ b/ios/App/Shared/player/AudioPlayer.swift
@@ -18,6 +18,8 @@ enum PlayMethod:Int {
 }
 
 class AudioPlayer: NSObject {
+    private let audioPlayerQueue = DispatchQueue(label: "ABSAudioPlayerQueue")
+    
     // enums and @objc are not compatible
     @objc dynamic var status: Int
     @objc dynamic var rate: Float
@@ -141,7 +143,7 @@ class AudioPlayer: NSObject {
         // Rate will be different depending on playback speed, aim for 2 observations/sec
         let seconds = 0.5 * (self.rate > 0 ? self.rate : 1.0)
         let time = CMTime(seconds: Double(seconds), preferredTimescale: timeScale)
-        self.timeObserverToken = self.audioPlayer.addPeriodicTimeObserver(forInterval: time, queue: .main) { [weak self] time in
+        self.timeObserverToken = self.audioPlayer.addPeriodicTimeObserver(forInterval: time, queue: audioPlayerQueue) { [weak self] time in
             let sleepTimeStopAt = self?.sleepTimeStopAt
             Task {
                 // Let the player update the current playback positions
@@ -205,7 +207,7 @@ class AudioPlayer: NSObject {
     
     private func startPausedTimer() {
         guard self.pausedTimer == nil else { return }
-        DispatchQueue.main.async {
+        audioPlayerQueue.async {
             self.pausedTimer = Timer.scheduledTimer(withTimeInterval: 10, repeats: true) { timer in
                 NSLog("PAUSE TIMER: Syncing from server")
                 Task { await PlayerProgress.shared.syncFromServer() }
@@ -398,7 +400,7 @@ class AudioPlayer: NSObject {
         var times = [NSValue]()
         times.append(NSValue(time: sleepTime))
         
-        sleepTimeToken = self.audioPlayer.addBoundaryTimeObserver(forTimes: times, queue: .main) { [weak self] in
+        sleepTimeToken = self.audioPlayer.addBoundaryTimeObserver(forTimes: times, queue: audioPlayerQueue) { [weak self] in
             NSLog("SLEEP TIMER: Pausing audio")
             self?.pause()
             self?.removeSleepTimer()