/// <summary> Executes the analysis operation asynchronously, then returns either the result, or any exception that was thrown. </summary>
/// <param name="vFrame"> The frame. </param>
/// <returns> A Task<NewResultEventArgs> </returns>
private async Task <NewResultEventArgs> DoAnalyzeFrame(VideoFrame vFrame)
{
CancellationTokenSource source = new CancellationTokenSource();
var fcn = AnalysisFunction;
if (fcn != null)
{
NewResultEventArgs output = new NewResultEventArgs(vFrame);
var task = fcn(vFrame);
try
{
if (task == await Task.WhenAny(task, Task.Delay(AnalysisTimeout, source.Token)))
{
output.AnalysisResult = await task;
source.Cancel();
}
else
{
output.TimedOut = true;
}
}
catch (Exception ex)
{
output.Exception = ex;
}
return(output);
}
else
{
return(null);
}
}
/// <summary> Executes the analysis operation asynchronously, then returns either the
/// result, or any exception that was thrown. </summary>
/// <param name="frame"> The frame. </param>
/// <returns> A Task<NewResultEventArgs> </returns>
protected async Task <NewResultEventArgs> DoAnalyzeFrame(VideoFrame frame)
{
CancellationTokenSource source = new CancellationTokenSource();
// Make a local reference to the function, just in case someone sets
// AnalysisFunction = null before we can call it.
var fcn = AnalysisFunction;
if (fcn != null)
{
NewResultEventArgs output = new NewResultEventArgs(frame);
var task = fcn(frame);
try
{
if (task == await Task.WhenAny(task, Task.Delay(AnalysisTimeout, source.Token)))
{
output.Analysis = await task;
source.Cancel();
}
else
{
output.TimedOut = true;
}
}
catch (Exception ae)
{
output.Exception = ae;
}
return(output);
}
else
{
return(null);
}
}
private void OnUpdateAnalysisResult(object sender, NewResultEventArgs newResultEventArgs)
{
var result = newResultEventArgs.AnalysisResult?.Emotions?.FirstOrDefault();
if (result == null)
{
return;
}
Scores = result.Scores;
}
/// <summary> Raises the new result event. </summary>
/// <param name="args"> Event information to send to registered event handlers. </param>
protected void OnNewResultAvailable(NewResultEventArgs args)
{
NewResultAvailable?.Invoke(this, args);
}
