/// <summary>
/// Service start
/// </summary>
protected override void Start()
{
//
// Add service specific initialization here
//
base.Start();
#region Run WinForms and Activate Timers
_stopWatch.Start();
var webcamPorts = new[] { _firstWebcamPort, _secondWebcamPort };
for (int idx = 0; idx < _webcamForms.Length; ++idx)
{
int i = idx;
WinFormsServicePort.Post(new RunForm(() =>
{
_webcamForms[i] = new ImageProcessingResultForm();
_webcamForms[i].Show();
Activate(Arbiter.Receive(false, _timers[i], dateTime => UpdateWebcam(webcamPorts[i],
_webcamForms[i], _timers[i])));
TaskQueue.EnqueueTimer(TimeSpan.FromMilliseconds(60), _timers[i]);
return(_webcamForms[i]);
}));
}
#endregion
}
IEnumerator <ITask> UpdateImage(webcam.WebCamOperations webcamPort, ImageProcessingResultForm webcamForm)
{
long timestamp = _stopWatch.ElapsedMilliseconds;
byte[] rgbData = null;
Size size = new Size(0, 0);
yield return(Arbiter.Choice(webcamPort.QueryFrame(),
success =>
{
rgbData = success.Frame;
size = success.Size;
},
failure =>
{
LogError(failure.ToException());
}));
TaskQueue.Enqueue(new Task(() =>
{
if (rgbData != null)
{
ComputeGradient(ref rgbData, size);
UpdateBitmap(rgbData, size, webcamForm, timestamp);
}
}));
}
IEnumerator <ITask> UpdateWebcamHelper(webcam.WebCamOperations webcamPort, ImageProcessingResultForm webcamForm,
Port <DateTime> timerPort)
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
yield return(new IterativeTask(() => UpdateImage(webcamPort, webcamForm)));
Activate(Arbiter.Receive(false, timerPort, dateTime => UpdateWebcam(webcamPort,
webcamForm, timerPort)));
TaskQueue.EnqueueTimer(TimeSpan.FromMilliseconds(Math.Max(1, 60 - stopwatch.ElapsedMilliseconds)), timerPort);
yield break;
}
private void UpdateBitmap(byte[] rgbData, Size size, ImageProcessingResultForm webcamForm,
long timestamp)
{
if (webcamForm == null)
{
return;
}
WinFormsServicePort.Post(new FormInvoke(() =>
{
if (timestamp > webcamForm.TimeStamp)
{
webcamForm.TimeStamp = timestamp;
Bitmap bmp = webcamForm.ImageResultBitmap;
CopyBytesToBitmap(rgbData, size.Width, size.Height, ref bmp);
if (bmp != webcamForm.ImageResultBitmap)
{
webcamForm.UpdateForm(bmp);
}
webcamForm.Invalidate(true);
}
}));
}
void UpdateWebcam(webcam.WebCamOperations webcamPort, ImageProcessingResultForm webcamForm,
Port <DateTime> timerPort)
{
SpawnIterator <webcam.WebCamOperations, ImageProcessingResultForm, Port <DateTime> >(
webcamPort, webcamForm, timerPort, UpdateWebcamHelper);
}
