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Keep managed iOS audio active in background
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This commit is contained in:
Talon
2026-09-19 20:09:00 +02:00
parent 9fc5598e8e
commit 42e3bbe14c
10 changed files with 112 additions and 15 deletions
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clients/apple/dotnet/VoiceCat.iOS/IosAudioRouter.cs
+32 -4
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@@ -33,9 +33,9 @@ internal sealed class IosAudioRouter
private IosAudioRouter()
{
NSNotificationCenter.DefaultCenter.AddObserver(AVAudioSession.RouteChangeNotification, _ => Recover());
NSNotificationCenter.DefaultCenter.AddObserver(AVAudioSession.RouteChangeNotification, HandleRouteChange);
NSNotificationCenter.DefaultCenter.AddObserver(AVAudioSession.InterruptionNotification, HandleInterruption);
NSNotificationCenter.DefaultCenter.AddObserver(AVAudioSession.MediaServicesWereResetNotification, _ => Recover());
NSNotificationCenter.DefaultCenter.AddObserver(AVAudioSession.MediaServicesWereResetNotification, _ => Recover("media services reset"));
}
internal void Load()
@@ -131,10 +131,38 @@ internal sealed class IosAudioRouter
private void Set(string key, string? value) { if (value is null) defaults.RemoveObject(key); else defaults.SetString(value, key); }
internal void Deactivate() => AVAudioSession.SharedInstance().SetActive(false, AVAudioSessionSetActiveOptions.NotifyOthersOnDeactivation, out _);
private void Recover() { RefreshRoutes(); if (IosAudioEngine.Shared.IsConnected) UIApplication.SharedApplication.BeginInvokeOnMainThread(IosAudioEngine.Shared.Reconfigure); }
internal void EnsureAudio(string reason)
{
if (!IosAudioEngine.Shared.IsConnected) return;
try { IosAudioEngine.Shared.EnsureRunning(); }
catch (Exception exception) { System.Diagnostics.Debug.WriteLine($"Audio recovery ({reason}) failed: {exception}"); }
}
internal void Recover(string reason)
{
RefreshRoutes();
if (!IosAudioEngine.Shared.IsConnected) return;
UIApplication.SharedApplication.BeginInvokeOnMainThread(() =>
{
try { IosAudioEngine.Shared.Reconfigure(); }
catch (Exception exception) { System.Diagnostics.Debug.WriteLine($"Audio recovery ({reason}) failed: {exception}"); }
});
}
private void HandleRouteChange(NSNotification note)
{
NSNumber? value = note.UserInfo?[new NSString("AVAudioSessionRouteChangeReasonKey")] as NSNumber;
AVAudioSessionRouteChangeReason reason = (AVAudioSessionRouteChangeReason)(value?.UInt32Value ?? 0);
RefreshRoutes();
if (reason is AVAudioSessionRouteChangeReason.CategoryChange
or AVAudioSessionRouteChangeReason.Override
or AVAudioSessionRouteChangeReason.RouteConfigurationChange)
return;
Recover($"route change ({reason})");
}
private void HandleInterruption(NSNotification note)
{
NSNumber? type = note.UserInfo?[new NSString("AVAudioSessionInterruptionTypeKey")] as NSNumber;
if ((AVAudioSessionInterruptionType)(type?.UInt32Value ?? 0) == AVAudioSessionInterruptionType.Ended) Recover();
AVAudioSessionInterruptionType interruption = (AVAudioSessionInterruptionType)(type?.UInt32Value ?? 0);
if (interruption == AVAudioSessionInterruptionType.Ended) Recover("interruption ended");
}
}