fix: recover from microphone disconnects

MeetingAssistant/Recording/WindowsMicrophoneDeviceProvider.cs

@@ -3,7 +3,7 @@ using NAudio.Wave;
 
 namespace MeetingAssistant.Recording;
 
-public sealed class WindowsMicrophoneDeviceProvider : IMicrophoneDeviceProvider
+public sealed class WindowsMicrophoneDeviceProvider : IMicrophoneDeviceProvider, IMicrophoneCaptureSourceFactory
 {
     private readonly MicrophoneDeviceSelection selection;
     private readonly ILogger<WindowsMicrophoneDeviceProvider> logger;
@@ -42,21 +42,38 @@ public sealed class WindowsMicrophoneDeviceProvider : IMicrophoneDeviceProvider
             selection.Resolve(options.Recording.MicrophoneDeviceId, GetDefaultMicrophone(), devices));
     }
 
-    public IWaveIn CreateCapture(MeetingAssistantOptions options)
+    public IMeetingAudioSource CreateCapture(MeetingAssistantOptions options)
     {
         var current = GetMicrophoneSnapshot(options).Current;
+        IWaveIn capture;
         if (current is null)
         {
             logger.LogInformation("Starting microphone capture from Windows default capture endpoint");
-            return new WasapiCapture();
+            capture = new WasapiCapture();
+        }
+        else
+        {
+            logger.LogInformation(
+                "Starting microphone capture from {MicrophoneName} ({MicrophoneDeviceId})",
+                current.Name,
+                current.Id);
+            using var enumerator = new MMDeviceEnumerator();
+            capture = new WasapiCapture(enumerator.GetDevice(current.Id));
         }
 
-        logger.LogInformation(
-            "Starting microphone capture from {MicrophoneName} ({MicrophoneDeviceId})",
-            current.Name,
-            current.Id);
-        using var enumerator = new MMDeviceEnumerator();
-        return new WasapiCapture(enumerator.GetDevice(current.Id));
+        try
+        {
+            capture.WaveFormat = new WaveFormat(
+                options.Recording.SampleRate,
+                16,
+                options.Recording.Channels);
+            return new NaudioCaptureAudioSource(capture, "microphone", logger);
+        }
+        catch
+        {
+            capture.Dispose();
+            throw;
+        }
     }
 
     private static MicrophoneDevice? GetDefaultMicrophone()