This is a native binary that allows Unity developers to ask Windows what is the currently default microphone. Currently Unity doesn't seem to support this, so I wrote this wrapper that asks Windows directly. This is useful for users who have a computer with more than one microphone and they can set it through the SteamVR audio preferences or Windows Audio Controls. PS: I wrote this specifically for VR, but it works just fine for regular Windows apps too.
- Download the latest release and copy the files from x86 and x86_64 into your Assets/Plugins/x86 and Assets/Plugins/x86_x64 folders respectively
- In Unity, call the function below to get the currently selected microphone using P/Invoke.
[DllImport("UnityMicLister", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)] private static extern uint GetDefaultMicrophoneName(out IntPtr argument); /// <summary> /// Gets the friendly name of the microphone that SteamVR has set as the default /// </summary> /// <returns>null if none found, otherwise it's the name of the default microphone</returns> public static string DefaultMicrophoneName() { IntPtr argument; uint result = GetDefaultMicrophoneName(out argument); if (result == 0) { string micName = Marshal.PtrToStringUni(argument); return micName; } else { Debug.LogError("Failed to query windows for the default microphone"); return null; } }