Try hooking up talking state to mute state

AudioDevice.cs

@@ -13,8 +13,6 @@ internal class AudioDevice : IAudioSessionEventsHandler
     private readonly string _friendlyName;
     private readonly Dictionary<string, AudioSessionControl> _sessions = new();
 
-    private bool _muted;
-
     public delegate void AudioSessionsChangedDelegate();
 
     public event AudioSessionsChangedDelegate AudioSessionsChanged;
@@ -24,9 +22,9 @@ internal class AudioDevice : IAudioSessionEventsHandler
         _logger = Log.ForContext<AudioDevice>();
 
         _friendlyName = device.DeviceFriendlyName;
-        _muted = device.AudioEndpointVolume.Mute;
+        IsMuted = device.AudioEndpointVolume.Mute;
 
-        _logger.Information("AudioDevice: {name} {muted}", _friendlyName, _muted);
+        _logger.Information("AudioDevice: {name} {muted}", _friendlyName, IsMuted);
 
         device.AudioEndpointVolume.OnVolumeNotification += AudioEndpointVolume_OnVolumeNotification;
         device.AudioSessionManager.AudioSessionControl.RegisterEventClient(this);
@@ -45,7 +43,7 @@ internal class AudioDevice : IAudioSessionEventsHandler
     {
         _logger.Information("AudioEndpointVolume_OnVolumeNotification: {name} {muted}", _friendlyName, data.Muted);
 
-        _muted = data.Muted;
+        IsMuted = data.Muted;
     }
 
     private void AudioSessionManager_OnSessionCreated(object sender, IAudioSessionControl newSession)
@@ -69,6 +67,8 @@ internal class AudioDevice : IAudioSessionEventsHandler
 
     public int ActiveSessionCount => _sessions.Values.Count(s => s.State == AudioSessionState.AudioSessionStateActive);
 
+    public bool IsMuted { get; private set; }
+
     void IAudioSessionEventsHandler.OnVolumeChanged(float volume, bool isMuted)
     {
         _logger.Information("OnVolumeChanged: {name} {volume} {isMuted}", _friendlyName, volume, isMuted);

AudioWatcher.cs

@@ -1,20 +1,26 @@
 using NAudio.CoreAudioApi;
 using NAudio.CoreAudioApi.Interfaces;
-using System.Collections.Generic;
-using System.Linq;
 using Serilog;
+using System.Collections.Generic;
 
 namespace WorkIndicator;
 
+internal enum MicrophoneStatus
+{
+    NotUsed,
+    UsedMuted,
+    UsedNotMuted
+}
+
 internal class AudioWatcher : IMMNotificationClient
 {
     private readonly ILogger _logger = Log.ForContext<AudioWatcher>();
     private readonly MMDeviceEnumerator _deviceEnumerator = new();
     private readonly Dictionary<string, AudioDevice> _inputDevices = new();
 
-    public delegate void MicrophoneInUseChangedDelegate(bool microphoneInUse);
+    public delegate void MicrophoneStatusChangedDelegate(MicrophoneStatus microphoneStatus);
 
-    public event MicrophoneInUseChangedDelegate MicrophoneInUseChanged;
+    public event MicrophoneStatusChangedDelegate MicrophoneStatusChanged;
 
     public void Start()
     {
@@ -43,12 +49,12 @@ internal class AudioWatcher : IMMNotificationClient
 
         _inputDevices[captureDevice.ID] = audioDevice;
 
-        MicrophoneInUseChanged?.Invoke(MicrophoneInUse());
+        MicrophoneStatusChanged?.Invoke(GetMicrophoneStatus());
     }
 
     private void AudioDevice_AudioSessionsChanged()
     {
-        MicrophoneInUseChanged?.Invoke(MicrophoneInUse());
+        MicrophoneStatusChanged?.Invoke(GetMicrophoneStatus());
     }
 
     private void HandleRemovedDevice(string deviceId)
@@ -57,7 +63,7 @@ internal class AudioWatcher : IMMNotificationClient
 
         _inputDevices.Remove(deviceId);
 
-        MicrophoneInUseChanged?.Invoke(MicrophoneInUse());
+        MicrophoneStatusChanged?.Invoke(GetMicrophoneStatus());
     }
 
     public void Stop()
@@ -68,11 +74,15 @@ internal class AudioWatcher : IMMNotificationClient
         _deviceEnumerator.Dispose();
     }
 
-    public bool MicrophoneInUse()
+    public MicrophoneStatus GetMicrophoneStatus()
     {
-        var totalActiveSessionCount = _inputDevices.Sum(i => i.Value.ActiveSessionCount);
+        foreach (var inputDevice in _inputDevices.Values)
+        {
+            if (inputDevice.ActiveSessionCount > 0)
+                return inputDevice.IsMuted ? MicrophoneStatus.UsedMuted : MicrophoneStatus.UsedNotMuted;
+        }
 
-        return totalActiveSessionCount > 0;
+        return MicrophoneStatus.NotUsed;
     }
 
     void IMMNotificationClient.OnDeviceStateChanged(string deviceId, DeviceState newState)

LightController.cs

@@ -30,7 +30,7 @@ namespace WorkIndicator
 
             Properties.Settings.Default.PropertyChanged += HandleSettingChange;
 
-            AudioWatcher.MicrophoneInUseChanged += AudioWatcher_MicrophoneInUseChanged;
+            AudioWatcher.MicrophoneStatusChanged += AudioWatcher_MicrophoneStatusChanged;
             AudioWatcher.Start();
 
             _initialized = true;
@@ -50,7 +50,7 @@ namespace WorkIndicator
             UpdateLights();
         }
 
-        private static void AudioWatcher_MicrophoneInUseChanged(bool microphoneInUse)
+        private static void AudioWatcher_MicrophoneStatusChanged(MicrophoneStatus microphoneStatus)
         {
             UpdateLights();
         }
@@ -90,9 +90,11 @@ namespace WorkIndicator
 
             if (status == Status.Auto)
             {
-                if (AudioWatcher.MicrophoneInUse())
+                var microphoneStatus = AudioWatcher.GetMicrophoneStatus();
+
+                if (microphoneStatus != MicrophoneStatus.NotUsed)
                 {
-                    status = Status.OnPhone;
+                    status = microphoneStatus == MicrophoneStatus.UsedMuted ? Status.OnPhone : Status.Talking;
                 }
                 else
                 {