/// <summary>
/// Initializes the scenario
/// </summary>
/// <returns></returns>
private async Task InitializeAsync(CancellationToken cancel = default(CancellationToken))
{
var streamFilteringCriteria = new
{
//AspectRatio = 1.333333333333333,
HorizontalResolution = (uint)480,
SubType = "YUY2"
};
currentState = State.Initializing;
device = new CaptureDevice();
CameraPreview.Visibility = Visibility.Collapsed;
PreviewPoster.Visibility = Visibility.Visible;
Preview.Content = "Start Preview";
LoopbackClient.IsEnabled = false;
mode = defaultMode;
LatencyModeToggle.IsOn = (mode == LatencyMode.LowLatency);
LatencyModeToggle.IsEnabled = false;
await device.InitializeAsync();
var setting = await device.SelectPreferredCameraStreamSettingAsync(MediaStreamType.VideoPreview, ((x) =>
{
var previewStreamEncodingProperty = x as Windows.Media.MediaProperties.VideoEncodingProperties;
return(previewStreamEncodingProperty.Width >= streamFilteringCriteria.HorizontalResolution &&
previewStreamEncodingProperty.Subtype == streamFilteringCriteria.SubType);
}));
previewEncodingProperties = setting as VideoEncodingProperties;
PreviewSetupCompleted();
}
protected async override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
if (activated)
{
RemoteVideo.Stop();
RemoteVideo.Source = null;
}
await device.CleanUpAsync();
device = null;
}
protected async override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
if (activated)
{
RemoteVideo.Stop();
RemoteVideo.Source = null;
}
await device.CleanUpAsync();
device = null;
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
var cameraFound = await CaptureDevice.CheckForRecordingDeviceAsync();
if (cameraFound)
{
device = new CaptureDevice();
await InitializeAsync();
device.IncomingConnectionArrived += Device_IncomingConnectionArrived;
device.CaptureFailed += Device_CaptureFailed;
RemoteVideo.MediaFailed += RemoteVideo_MediaFailed;
}
else
{
rootPage.NotifyUser("A machine with a camera and a microphone is required to run this sample.", NotifyType.ErrorMessage);
}
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
var cameraFound = await CaptureDevice.CheckForRecordingDeviceAsync();
if (cameraFound)
{
device = new CaptureDevice();
await InitializeAsync();
device.IncomingConnectionArrived += Device_IncomingConnectionArrived;
device.CaptureFailed += Device_CaptureFailed;
RemoteVideo.MediaFailed += RemoteVideo_MediaFailed;
}
else
{
rootPage.NotifyUser("A machine with a camera and a microphone is required to run this sample.", NotifyType.ErrorMessage);
}
}
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 <bool> createRecordingObject()
{
var cameraFound = await CaptureDevice.CheckForRecordingDeviceAsync();
if (cameraFound)
{
device = new CaptureDevice();
await device.InitializeAsync();
device.IncomingConnectionArrived += device_IncomingConnectionArrived;
device.CaptureFailed += device_CaptureFailed;
return(true);
}
else
{
NotifyUser("A machine with a camera and a microphone is required to run this sample.", NotifyType.ErrorMessage);
return(false);
}
}
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;
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
var cameraEnumTask = CaptureDevice.CheckForRecordingDeviceAsync();
var cameraFound = await cameraEnumTask;
if (cameraFound)
{
try
{
await InitializeAsync();
Window.Current.VisibilityChanged += Window_VisibilityChanged;
}
catch (Exception err)
{
rootPage.NotifyUser("Camera initialization error: " + err.Message + "\n Try restarting the sample.", NotifyType.ErrorMessage);
}
}
else
{
rootPage.NotifyUser("A machine with a camera and a microphone is required to run this sample.", NotifyType.ErrorMessage);
}
}
/// <summarycancel
/// Initializes the scenario
/// </summary>
/// <returns></returns>
private async Task InitializeAsync()
{
var streamFilteringCriteria = new
{
HorizontalResolution = (uint)480,
SubType = "YUY2"
};
currentState = State.Initializing;
device = new CaptureDevice();
PreviewVideo.Visibility = Visibility.Collapsed;
WebcamPreviewPoster.Visibility = Visibility.Visible;
PreviewButton.Content = "Start Preview";
LoopbackClientButton.IsEnabled = false;
mode = defaultMode;
LatencyModeToggle.IsOn = (mode == LatencyMode.LowLatency);
LatencyModeToggle.IsEnabled = false;
await device.InitializeAsync();
var setting = await device.SelectPreferredCameraStreamSettingAsync(MediaStreamType.VideoPreview, ((x) =>
{
var previewStreamEncodingProperty = x as Windows.Media.MediaProperties.VideoEncodingProperties;
return (previewStreamEncodingProperty.Width >= streamFilteringCriteria.HorizontalResolution &&
previewStreamEncodingProperty.Subtype == streamFilteringCriteria.SubType);
}));
previewEncodingProperties = setting as VideoEncodingProperties;
PreviewSetupCompleted();
}
