protected async override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
if (activated)
{
RemoteVideo.Stop();
RemoteVideo.Source = null;
}
await device.CleanUpAsync();
device = null;
}
private async Task CleanupAsync()
{
try
{
if (currentState == State.Previewing || currentState == State.Streaming)
{
await device.CaptureSource.StopPreviewAsync();
if (currentState == State.Streaming)
{
LocalhostVideo.Stop();
}
}
await device.CleanUpAsync();
}
catch (Exception)
{
}
finally
{
LocalhostVideo.Source = null;
}
}
private async Task readCameraProperties()
{
var cameraFound = await CaptureDevice.CheckForRecordingDeviceAsync();
if (cameraFound)
{
device = new CaptureDevice();
await device.InitializeAsync();
loadAllVideoProperties();
await device.CleanUpAsync();
device = null;
}
else
{
NotifyUser("A machine with a camera and a microphone is required to run this sample.", NotifyType.ErrorMessage);
}
}
private async Task EndRecording()
{
if (device == null)
{
return;
}
await device.CaptureSource.StopPreviewAsync();
await device.CleanUpAsync();
device = null;
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, (() =>
{
previewElement.Source = null;
}));
_isRecording = false;
}
private async Task CleanupAsync()
{
if (currentState == State.Previewing || currentState == State.Streaming)
{
await device.CaptureSource.StopPreviewAsync();
if (currentState == State.Streaming)
{
LocalhostVideo.Stop();
LocalhostVideo.Visibility = Visibility.Collapsed;
LocalHostPoster.Visibility = Visibility.Visible;
}
}
await device.CleanUpAsync();
LocalhostVideo.Source = null;
}
