private void Uninitialize()
{
_initialized = false;
if (_timer != null)
{
_timer.Stop();
_timer.Tick -= DispatcherTimer_Tick;
_timer = null;
}
if (_renderer != null)
{
_renderer.Dispose();
_renderer = null;
}
if (_effect != null)
{
_effect.Dispose();
_effect = null;
}
_filters = null;
_chromaKeyFilter = null;
_rotationFilter = null;
_bitmap = null;
if (_source != null)
{
_source.Dispose();
_source = null;
}
}
private void Cleanup()
{
System.Diagnostics.Debug.WriteLine("Cleaning up scanner");
try
{
_Ready = false;
_Done = true;
_Rendering = true;
_Controller = null;
_ImagePreview = null;
_Effects = null;
_Render.Dispose();
_Render = null;
_Image = null;
_Source.StopPreviewAsync();
_Source.PreviewFrameAvailable -= OnPreviewFrameAvailable;
_Source.Dispose();
_Source = null;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Cleaning up scanner. {0}", ex.Message);
}
}
private void Cleanup()
{
if (!_cleanedUp)
{
// Free all - NECESSARY TO CLEANUP PROPERLY !
_cameraPreviewImageSource.PreviewFrameAvailable -= OnPreviewFrameAvailable;
_capturing = false;
_cameraPreviewImageSource.Dispose();
_writeableBitmapRenderer.Dispose();
_cleanedUp = true;
}
}
private async Task Render()
{
if (!_rendering && !_stop)
{
_rendering = true;
// Render camera preview frame to screen
_writeableBitmapRenderer.Source = _cameraPreviewImageSource;
_writeableBitmapRenderer.WriteableBitmap = _writeableBitmap;
await _writeableBitmapRenderer.RenderAsync();
await Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(
CoreDispatcherPriority.High, () =>
{
_writeableBitmap.Invalidate();
});
// Write camera preview frame to file if capturing
if (_capturing)
{
if (_sequenceIndex < 20)
{
_jpegRenderer.Source = _cameraPreviewImageSource;
IBuffer jpg = await _jpegRenderer.RenderAsync();
await Save(jpg, _sequenceIndex ++);
}
else
{
StartStopCapture();
}
}
_rendering = false;
}
if (_stop)
{
_capturing = false;
_cameraPreviewImageSource.Dispose();
_writeableBitmapRenderer.Dispose();
_jpegRenderer.Dispose();
}
}
}//hide progressBar
private async Task DisposeResourcesAsync()
{
HideCommandBar();
DisposeArray();
if (bitmapRenderer != null)
{
bitmapRenderer.Dispose();
}
bitmapRenderer = null;
if (isPreviewing && (cameraSource != null))
{
await cameraSource.StopPreviewAsync();
cameraSource.Dispose();
}
cameraSource = null;
GC.Collect();
}//dispose page resources
private void EndSession()
{
if (_renderer != null)
{
_renderer.Dispose();
_renderer = null;
}
if (_filterEffect != null)
{
_filterEffect.Dispose();
_filterEffect = null;
}
if (_source != null)
{
_source.Dispose();
_source = null;
}
_reframingFilter = null;
_info = null;
}
