public override async Task <bool> SetAsDefaultCommunicationsAsync(CancellationToken cancellationToken)
{
if (State != DeviceState.Active)
{
return(_isDefaultCommDevice = false);
}
var acquiredSemaphore = await _setDefaultCommSemaphore.AvailableWaitHandle.WaitOneAsync(0, cancellationToken);
try
{
if (acquiredSemaphore)
{
_defaultCommResetEvent.Reset();
PolicyConfig.SetDefaultEndpoint(RealId, ERole.Communications);
}
await _defaultCommResetEvent.WaitOneAsync(cancellationToken);
return(_isDefaultCommDevice);
}
catch (Exception ex) when(ex is OperationCanceledException || ex is TimeoutException)
{
throw new ComInteropTimeoutException(ex);
}
finally
{
if (acquiredSemaphore)
{
_setDefaultCommSemaphore.Release();
}
}
}
public override bool SetDefaultCommunicationsDevice(CoreAudioDevice dev)
{
if (dev == null)
{
return(false);
}
var oldDefault = dev.IsPlaybackDevice ? DefaultPlaybackCommunicationsDevice : DefaultCaptureCommunicationsDevice;
try
{
PolicyConfig.SetDefaultEndpoint(dev.RealId, ERole.Communications);
return(dev.IsDefaultCommunicationsDevice);
}
catch
{
return(false);
}
finally
{
//Raise the default changed event on the old device
if (oldDefault != null && !oldDefault.IsDefaultCommunicationsDevice)
{
RaiseAudioDeviceChanged(new DefaultDeviceChangedEventArgs(oldDefault, true));
}
}
}
public override bool SetAsDefault(CancellationToken cancellationToken)
{
if (State != DeviceState.Active)
{
return(_isDefaultDevice = false);
}
var acquiredSemaphore = _setDefaultSemaphore.Wait(0, cancellationToken);
try
{
if (acquiredSemaphore)
{
_defaultResetEvent.Reset();
PolicyConfig.SetDefaultEndpoint(RealId, ERole.Console | ERole.Multimedia);
}
_defaultResetEvent.WaitOne(cancellationToken);
return(_isDefaultDevice);
}
catch (Exception ex) when(ex is OperationCanceledException || ex is TimeoutException)
{
throw new ComInteropTimeoutException(ex);
}
finally
{
if (acquiredSemaphore)
{
_setDefaultSemaphore.Release();
}
}
}
public override bool SetDefaultDevice(CoreAudioDevice dev)
{
if (dev == null)
{
return(false);
}
var oldDefault = dev.IsPlaybackDevice ? DefaultPlaybackDevice : DefaultCaptureDevice;
try
{
if (IsNotVista())
{
PolicyConfig.SetDefaultEndpoint(dev.RealId, ERole.Console | ERole.Multimedia);
}
else
{
PolicyConfigVista.SetDefaultEndpoint(dev.RealId, ERole.Console | ERole.Multimedia);
}
return(dev.IsDefaultDevice);
}
catch
{
return(false);
}
finally
{
//Raise the default changed event on the old device
if (oldDefault != null && !oldDefault.IsDefaultDevice)
{
RaiseAudioDeviceChanged(new AudioDeviceChangedEventArgs(oldDefault, AudioDeviceEventType.DefaultDevice));
}
}
}
