Possible fixe for RDP problems

Crashing when launching the app because of problem with the COM thread.

Fixes #187

Author: Antoine Aflalo

SoundSwitch/Framework/NotificationManager/Notification/NotificationCustom.cs

@@ -25,20 +25,28 @@ namespace SoundSwitch.Framework.NotificationManager.Notification
 {
     public class NotificationCustom : INotification
     {
-        private readonly MMDeviceEnumerator _deviceEnumerator = new MMDeviceEnumerator();
+        private MMDeviceEnumerator _deviceEnumerator;
 
         public NotificationTypeEnum TypeEnum => NotificationTypeEnum.CustomNotification;
         public string Label => SettingsStrings.notificationOptionCustomized;
 
         public INotificationConfiguration Configuration { get; set; }
 
+        private MMDeviceEnumerator GetEnumerator()
+        {
+            if (_deviceEnumerator != null)
+                return _deviceEnumerator;
+
+            return _deviceEnumerator = new MMDeviceEnumerator();
+        }
+
         public void NotifyDefaultChanged(IAudioDevice audioDevice)
         {
             if (audioDevice.Type != AudioDeviceType.Playback)
                 return;
             var task = new Task(() =>
             {
-                var device = _deviceEnumerator.GetDevice(audioDevice.Id);
+                var device = GetEnumerator().GetDevice(audioDevice.Id);
                 using (var output = new WasapiOut(device, AudioClientShareMode.Shared, true, 10))
                 using (var waveStream = new CachedSoundWaveStream(Configuration.CustomSound))
                 {

SoundSwitch/Framework/NotificationManager/Notification/NotificationSound.cs

@@ -26,18 +26,21 @@ namespace SoundSwitch.Framework.NotificationManager.Notification
 {
     public class NotificationSound : INotification
     {
-        private readonly MMDeviceEnumerator _deviceEnumerator;
-
-        public NotificationSound()
-        {
-            _deviceEnumerator = new MMDeviceEnumerator();
-        }
+        private MMDeviceEnumerator _deviceEnumerator;
 
         public NotificationTypeEnum TypeEnum => NotificationTypeEnum.SoundNotification;
         public string Label => SettingsStrings.notificationOptionSound;
 
         public INotificationConfiguration Configuration { get; set; }
 
+        private MMDeviceEnumerator GetEnumerator()
+        {
+            if (_deviceEnumerator != null)
+                return _deviceEnumerator;
+
+            return _deviceEnumerator = new MMDeviceEnumerator();
+        }
+
         public void NotifyDefaultChanged(IAudioDevice audioDevice)
         {
             if (audioDevice.Type != AudioDeviceType.Playback)
@@ -47,7 +50,7 @@ public void NotifyDefaultChanged(IAudioDevice audioDevice)
             {
                 using (var memoryStreamedSound = GetStreamCopy())
                 {
-                    var device = _deviceEnumerator.GetDevice(audioDevice.Id);
+                    var device = GetEnumerator().GetDevice(audioDevice.Id);
                     using (var output = new WasapiOut(device, AudioClientShareMode.Shared, true, 10))
                     {
                         output.Init(new WaveFileReader(memoryStreamedSound));