private void CleanupInputImage()
{
try
{
if (InputSoftwareBitmapSource != null)
{
InputSoftwareBitmapSource.Dispose();
InputSoftwareBitmapSource = new SoftwareBitmapSource();
}
if (OutputSoftwareBitmapSource != null)
{
OutputSoftwareBitmapSource.Dispose();
OutputSoftwareBitmapSource = new SoftwareBitmapSource();
}
if (_appModel.OutputFrame != null)
{
_appModel.OutputFrame.Dispose();
}
_appModel.OutputFrame = new VideoFrame(BitmapPixelFormat.Bgra8, (int)_outWidth, (int)_outHeight);
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
}
private async Task EvaluateVideoFrameAsync()
{
Debug.WriteLine("EvaluateVideoFrameAsync");
if (_appModel.InputFrame.Direct3DSurface != null)
{
Debug.WriteLine("Has Direct3dsurface");
}
if ((_appModel.InputFrame != null) &&
(_appModel.InputFrame.SoftwareBitmap != null || _appModel.InputFrame.Direct3DSurface != null))
{
_appModel.InputFrame = await ImageHelper.CenterCropImageAsync(_appModel.InputFrame, _inWidth, _inHeight);
await InputSoftwareBitmapSource.SetBitmapAsync(_appModel.InputFrame.SoftwareBitmap);
// Lock so eval + binding not destroyed mid-evaluation
Debug.Write("Eval Begin | ");
LearningModelEvaluationResult results;
lock (_processLock)
{
Debug.Write("Eval Lock | ");
_binding.Bind(_inputImageDescription, ImageFeatureValue.CreateFromVideoFrame(_appModel.InputFrame));
_binding.Bind(_outputImageDescription, ImageFeatureValue.CreateFromVideoFrame(_appModel.OutputFrame));
results = _session.Evaluate(_binding, "test");
}
Debug.Write("Eval Unlock\n");
// Parse Results
IReadOnlyDictionary <string, object> outputs = results.Outputs;
foreach (var output in outputs)
{
Debug.WriteLine($"{output.Key} : {output.Value} -> {output.Value.GetType()}");
}
await OutputSoftwareBitmapSource.SetBitmapAsync(_appModel.OutputFrame.SoftwareBitmap);
}
}