public void SetDefaultAudioDevice(SoundControllServer.AudioDevice device, AudioDeviceRole role)
{
if (device == null)
{
throw new ArgumentNullException("device");
}
// BADNESS: The following code uses undocumented interfaces provided by the Audio SDK. This is completely
// unsupported, and should be used for amusement purposes only. This is *extremely likely* to be broken
// in future updates and/or versions of Windows. If Larry Osterman was dead, he would be rolling over
// in his grave if he knew you were using this for nefarious purposes.
var config = new PolicyConfig();
int hr;
IPolicyConfig2 config2 = config as IPolicyConfig2;
if (config2 != null)
{ // Windows 7 -> Windows 8.1
hr = config2.SetDefaultEndpoint(device.Id, role);
}
else
{ // Windows 10+
hr = ((IPolicyConfig3)config).SetDefaultEndpoint(device.Id, role);
}
if (hr != HResult.OK)
{
throw Marshal.GetExceptionForHR(hr);
}
}
public static void SetDefaultAudioDevice(MMDevice mMDevice)
{
try
{
var config = new PolicyConfig();
int hr1;
int hr2;
int hr3;
bool? win10 = null;
IPolicyConfig2 config2 = config as IPolicyConfig2;
if (config2 != null)
{
win10 = false;
hr1 = config2.SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Multimedia);
hr2 = config2.SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Communications);
hr3 = config2.SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Console);
}
else
{
win10 = true;
hr1 = ((IPolicyConfig3)config).SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Multimedia);
hr2 = ((IPolicyConfig3)config).SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Communications);
hr3 = ((IPolicyConfig3)config).SetDefaultEndpoint(mMDevice.ID, AudioDeviceRole.Console);
}
Toolbox.uAddDebugLog($"NAudio HResult Definitions: s_OK({HResult.S_OK}) | s_FALSE({HResult.S_FALSE}) | e_INVALIDARG({HResult.E_INVALIDARG})");
Toolbox.uAddDebugLog($"SetAudioDefaultResults: win10({win10}) | hr1({hr1}) | hr2({hr2}) | hr3({hr3})");
}
catch (Exception ex)
{
Toolbox.LogException(ex);
}
}
