UWP app crashes when plugging/unplugging earphones

Unity Engine
, ,
1

Hey guys, I’ve run into an issue with our UWP app where plugging or unplugging a headset or earphones can cause the application to crash. The call stack seems to point out to a problem with Unity.

0 UnityPlayer!SoundManager::GetHandle soundmanager.cpp

1 UnityPlayer!SampleClip::LoadBaseSound audioclip.cpp

2 UnityPlayer!SampleClip::LoadAudioData audioclip.cpp

3 UnityPlayer!AudioSource:: Play audiosource.cpp

4 UnityPlayer!AudioSource_CUSTOM_Play audiobindings.gen.cpp

Has anyone run into this issue before? I’m using Unity 5.6.2f1 and building for Universal 10 using UWP SDK 10.0.14393.0.

2

Hi,

this is definitely not expected and it indeed looks like an issue with Unity. Could you file a bug report?

3

I’ve tried to repro this bug in a new Unity project and managed to do it but I don’t think it’s related to Unity.

Someone added some code in our project to deal with this issue : Unity Issue Tracker - Reconnecting audio device doesn't trigger AudioSettings.OnAudioConfigurationChanged

To circumvent this issue, we used the Windows.Media.Devices namespace and subscribed to the MediaDevice.DefaultAudioRenderDeviceChanged event.

using System;
using UnityEngine;

#if NETFX_CORE
using Windows.Media.Devices;
using Windows.Devices.Enumeration;
#endif

public class AudioCrashScript : MonoBehaviour
{
#if NETFX_CORE
    private string _deviceId = string.Empty;

    private void Awake()
    {
        MediaDevice.DefaultAudioRenderDeviceChanged += OnDefaultSoundPlaybackDeviceChanged;
    }

    private async void OnDefaultSoundPlaybackDeviceChanged(object sender, DefaultAudioRenderDeviceChangedEventArgs args)
    {
        DeviceInformation deviceInfo = await DeviceInformation.CreateFromIdAsync(args.Id);
        if (deviceInfo.Id == _deviceId)
            return;

        _deviceId = deviceInfo.Id;

        UnityEngine.WSA.Application.InvokeOnAppThread(() =>
        {
            AudioConfiguration config = AudioSettings.GetConfiguration();
            AudioSettings.Reset(config);
        }, true);
    }
#endif
}

This code seems to crash the Master UWP app on some machines. Now, if I add a try/catch to the CreateFromIdAsync method, I can prevent the crash.

My problem now is that when I unplug/plug headphones, I don’t have any sound. I’m using Unity 5.6.2f1. Is it possible that the issue I linked in the Unity Issue Tracker is not fixed even though it’s marked as fixed? If sound was able to play as expected when using headphones, I would just discard all the code that was added to circumvent the issue.

4

Disregard all that. I removed all the code that was causing problems and did not call AudioSettings.Reset(config); when changing audio playback device and everything seems to be working now. Sorry about that waste of time -_-

5

I’ll ask our QA to look at it again.

6

Bad news :(. QA managed to reproduce it. Apparently it is device dependent, and it doesn’t reproduce on some laptops (that’s how it first got marked as fixed). We’ll look at it.

1 Like