ignore explorer process

src/FocusVolumeControl/AudioHelpers/AudioHelper.cs

@@ -1,12 +1,8 @@
-using BarRaider.SdTools;
-using FocusVolumeControl.AudioSessions;
+using FocusVolumeControl.AudioSessions;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.IO;
 using System.Linq;
-using System.Runtime.InteropServices;
-using System.Text;
 
 namespace FocusVolumeControl.AudioHelpers;
 
@@ -27,6 +23,18 @@ public class AudioHelper
 		}
 	}
 
+	private Process GetProcessById(int id)
+	{
+		try
+		{
+			return Process.GetProcessById(id);
+		}
+		catch
+		{
+			return null;
+		}
+	}
+
 	public IAudioSession FindSession(List<Process> processes)
 	{
 		var results = new ActiveAudioSessionWrapper();
@@ -55,7 +63,12 @@ public class AudioHelper
 				sessionEnumerator.GetSession(i, out var session);
 
 				session.GetProcessId(out var sessionProcessId);
-				var audioProcess = Process.GetProcessById(sessionProcessId);
+				var audioProcess = GetProcessById(sessionProcessId);
+
+				if(audioProcess == null)
+				{
+					continue;
+				}
 
 				var index = processes.FindIndex(x => x.Id == sessionProcessId || x.ProcessName == audioProcess?.ProcessName);
 
@@ -99,7 +112,7 @@ public class AudioHelper
 		lock (_lock)
 		{
 			var processes = GetPossibleProcesses();
-			var processIds = processes.Select(x => x.Id).ToArray();
+			var processIds = processes?.Select(x => x.Id).ToArray();
 
 			if (_currentProcesses == null || !_currentProcesses.SequenceEqual(processIds))
 			{
@@ -145,7 +158,7 @@ public class AudioHelper
 
 		if (handle == IntPtr.Zero)
 		{
-			return null;
+			return new List<Process>();
 		}
 
 		var ids = Native.GetProcessesOfChildWindows(handle);
@@ -157,6 +170,11 @@ public class AudioHelper
 						   .Select(x => Process.GetProcessById(x))
 						   .ToList();
 
+		if(processes.FirstOrDefault()?.ProcessName == "explorer")
+		{
+			return new List<Process>();
+		}
+
 		try
 		{
 			//note. in instances where you launch a game from steam. this ends up mapping the process to both steam and to the game. which is unfortunate