private void Uninitialize()
{
StatusTextBlock.Text = "";
if (_mediaElement != null)
{
_mediaElement.Source = null;
_mediaElement = null;
}
if (_cameraStreamSource != null)
{
_cameraStreamSource.FrameRateChanged -= CameraStreamSource_FPSChanged;
_cameraStreamSource = null;
}
_cameraEffect = null;
}
private async void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_StatusTextBlock_StartingCamera;
_cameraEffect = new Effects()
{
PhotoCaptureDevice = App.Camera
};
_cameraStreamSource = new CameraStreamSource(_cameraEffect, App.Camera.CaptureResolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement {
Stretch = Stretch.UniformToFill, BufferingTime = new TimeSpan(0)
};
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
StatusTextBlock.Text = _cameraEffect.EffectName;
}
private void Uninitialize()
{
StatusTextBlock.Text = "";
if (_mediaElement != null)
{
_mediaElement.Source = null;
_mediaElement = null;
}
if (_cameraStreamSource != null)
{
_cameraStreamSource.FrameRateChanged -= CameraStreamSource_FPSChanged;
_cameraStreamSource = null;
}
_cameraEffect = null;
if (_photoCaptureDevice != null)
{
_photoCaptureDevice.Dispose();
_photoCaptureDevice = null;
}
}
private async void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_StatusTextBlock_StartingCamera;
var resolution = PhotoCaptureDevice.GetAvailablePreviewResolutions(CameraSensorLocation.Back).Last();
_photoCaptureDevice = await PhotoCaptureDevice.OpenAsync(CameraSensorLocation.Back, resolution);
await _photoCaptureDevice.SetPreviewResolutionAsync(resolution);
_cameraEffect = new NokiaImagingSDKEffects();
_cameraEffect.PhotoCaptureDevice = _photoCaptureDevice;
_cameraStreamSource = new CameraStreamSource(_cameraEffect, resolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement();
_mediaElement.Stretch = Stretch.UniformToFill;
_mediaElement.BufferingTime = new TimeSpan(0);
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
_cameraEffect.PreviousEffect();
StatusTextBlock.Text = _cameraEffect.EffectName;
}
private async void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_StatusTextBlock_StartingCamera;
_cameraEffect = new Effects() {PhotoCaptureDevice = App.Camera};
_cameraStreamSource = new CameraStreamSource(_cameraEffect, App.Camera.CaptureResolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement {Stretch = Stretch.UniformToFill, BufferingTime = new TimeSpan(0)};
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
StatusTextBlock.Text = _cameraEffect.EffectName;
}
/// <summary>
/// Opens and sets up the camera if not already. Creates a new
/// CameraStreamSource with an effect and shows it on the screen via
/// the media element.
/// </summary>
private async void Initialize() {
Debug.WriteLine("MainPage.Initialize()");
var mediaElementSize = new Size(MediaElementWidth, MediaElementHeight);
if (_camera == null) {
// Resolve the capture resolution and open the camera
var captureResolutions =
PhotoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back);
var selectedCaptureResolution =
captureResolutions.Where(
resolution => Math.Abs(AspectRatio - resolution.Width/resolution.Height) <= 0.1)
.OrderBy(resolution => resolution.Width).Last();
_camera = await PhotoCaptureDevice.OpenAsync(
CameraSensorLocation.Back, selectedCaptureResolution);
// Set the image orientation prior to encoding
_camera.SetProperty(KnownCameraGeneralProperties.EncodeWithOrientation,
_camera.SensorLocation == CameraSensorLocation.Back
? _camera.SensorRotationInDegrees : -_camera.SensorRotationInDegrees);
// Resolve and set the preview resolution
var previewResolutions =
PhotoCaptureDevice.GetAvailablePreviewResolutions(CameraSensorLocation.Back);
Size selectedPreviewResolution =
previewResolutions.Where(
resolution => Math.Abs(AspectRatio - resolution.Width/resolution.Height) <= 0.1)
.Where(resolution => (resolution.Height >= mediaElementSize.Height)
&& (resolution.Width >= mediaElementSize.Width))
.OrderBy(resolution => resolution.Width).First();
await _camera.SetPreviewResolutionAsync(selectedPreviewResolution);
_cameraEffect.CaptureDevice = _camera;
}
if (_mediaElement == null) {
_mediaElement = new MediaElement {
Stretch = Stretch.UniformToFill,
BufferingTime = new TimeSpan(0)
};
_mediaElement.Tap += OnMyCameraMediaElementTapped;
_source = new CameraStreamSource(_cameraEffect, mediaElementSize);
_mediaElement.SetSource(_source);
MediaElementContainer.Children.Add(_mediaElement);
_source.FPSChanged += OnFPSChanged;
}
// Show the index and the name of the current effect
if (_cameraEffect is NokiaImagingSDKEffects) {
var effects =
_cameraEffect as NokiaImagingSDKEffects;
EffectNameTextBlock.Text =
(effects.EffectIndex + 1) + "/"
+ NokiaImagingSDKEffects.NumberOfEffects
+ ": " + effects.EffectName;
} else {
EffectNameTextBlock.Text = _cameraEffect.EffectName;
}
}
