private async void btnStartStopPhotoSequence_Click(Object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
try
{
if (btnStartStopPhotoSequence.Content.ToString() == "Prepare PhotoSequence")
{
if (!m_capture.VideoDeviceController.LowLagPhotoSequence.Supported)
{
rootPage.NotifyUser("Photo-sequence is not supported", NotifyType.ErrorMessage);
}
else
{
if (m_capture.VideoDeviceController.LowLagPhotoSequence.MaxPastPhotos < m_pastFrame)
{
m_pastFrame = m_capture.VideoDeviceController.LowLagPhotoSequence.MaxPastPhotos;
rootPage.NotifyUser("pastFrame number is past limit, reset passFrame number", NotifyType.ErrorMessage);
}
btnStartStopPhotoSequence.IsEnabled = false;
m_capture.VideoDeviceController.LowLagPhotoSequence.ThumbnailEnabled = true;
m_capture.VideoDeviceController.LowLagPhotoSequence.DesiredThumbnailSize = 300;
m_capture.VideoDeviceController.LowLagPhotoSequence.PhotosPerSecondLimit = 4;
m_capture.VideoDeviceController.LowLagPhotoSequence.PastPhotoLimit = m_pastFrame;
LowLagPhotoSequenceCapture photoCapture = await m_capture.PrepareLowLagPhotoSequenceCaptureAsync(ImageEncodingProperties.CreateJpeg());
photoCapture.PhotoCaptured += new Windows.Foundation.TypedEventHandler <LowLagPhotoSequenceCapture, PhotoCapturedEventArgs>(this.photoCapturedEventHandler);
m_photoSequenceCapture = photoCapture;
btnStartStopPhotoSequence.Content = "Take PhotoSequence";
btnStartStopPhotoSequence.IsEnabled = true;
m_bPhotoSequence = true;
}
}
else if (btnStartStopPhotoSequence.Content.ToString() == "Take PhotoSequence")
{
btnSaveToFile.IsEnabled = false;
m_frameNum = 0;
m_ThumbnailNum = 0;
m_selectedIndex = -1;
m_highLighted = false;
Clear();
btnStartStopPhotoSequence.IsEnabled = false;
await m_photoSequenceCapture.StartAsync();
}
else
{
rootPage.NotifyUser("Bad photo-sequence state", NotifyType.ErrorMessage);
}
}
catch (Exception exception)
{
ShowExceptionMessage(exception);
}
}
private async void InitializeMediaCapture()
{
_capturedSequence = new List<IRandomAccessStream>();
_mediaCapture = new MediaCapture();
var devices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
var backCamera = devices.FirstOrDefault(x => x.EnclosureLocation != null && x.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Back);
await _mediaCapture.InitializeAsync(new MediaCaptureInitializationSettings
{
StreamingCaptureMode = StreamingCaptureMode.Video,
PhotoCaptureSource = PhotoCaptureSource.Auto,
AudioDeviceId = string.Empty,
VideoDeviceId = backCamera.Id
});
captureElement.Source = _mediaCapture;
await _mediaCapture.StartPreviewAsync();
var format = ImageEncodingProperties.CreateJpeg();
format.Width = 640;
format.Height = 480;
_lowLagPhotoSequenceCapture = await _mediaCapture.PrepareLowLagPhotoSequenceCaptureAsync(format);
_lowLagPhotoSequenceCapture.PhotoCaptured += OnPhotoCaptured;
}
