/// <summary>
/// Handler for notifications by the tracker.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void tracker_TrackerNotification(object sender, TrackerNotificationEventArgs e)
{
ServiceStatus serviceStatus = null;
lock (_lockStatus)
{
switch (e.Code)
{
case TrackerNotificationCode.NoSignalsDetected:
Debug.WriteLine("NO SIGNAL DETECTED.");
break;
case TrackerNotificationCode.Started:
// from tracking to training mode
Debug.WriteLine("TRACKER STARTED (training). ");
_localizer.Enabled = false;
// notify all subscribers
serviceStatus = new ServiceStatus
{
ContextId = _localizer.ContextId,
ServiceState = ServiceStateCode.Training
};
DoReportServiceStatus(serviceStatus);
break;
case TrackerNotificationCode.Stopped:
// from tracking to notification mode
Debug.WriteLine("TRACKER STOPPED.");
// notify all subscribers
serviceStatus = new ServiceStatus
{
ContextId = _localizer.ContextId,
ServiceState = ServiceStateCode.Notification
};
DoReportServiceStatus(serviceStatus);
break;
case TrackerNotificationCode.TrainingCompleted:
// from training to tracking mode
Debug.WriteLine("TRAINING COMPLETED.");
_localizer.Enabled = true;
// notify all subscribers
serviceStatus = new ServiceStatus
{
ContextId = _localizer.ContextId,
ServiceState = ServiceStateCode.Tracking
};
DoReportServiceStatus(serviceStatus);
break;
}
}
}
/// <summary>
/// Each time this handler is invoked, a new WLAN scan is performed
/// and a new example is added to the staging area.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void trackerTimer_Elapsed(object sender, ElapsedEventArgs e)
{
lock (_trackerLock)
{
if (_targetScenario == null)
{
// nothing to do
return;
}
// suspend capture until completion
_trackerTimer.Stop();
var scanSignals = _wlanScanner.GetScanSignals();
if (scanSignals.Count == 0)
{
// notify and ignore signals
if (TrackerNotification != null)
{
var args = new TrackerNotificationEventArgs
{
Code = TrackerNotificationCode.NoSignalsDetected
};
ThreadPool.QueueUserWorkItem(new WaitCallback(DoNotification), args);
}
}
else
{
var example = new TrainingSetExample
{
ScanDateTime = DateTime.Now,
ScanSignals = scanSignals
};
_targetScenario.TrainingSet.Add(example);
Debug.WriteLine("[Tracker] " + _targetScenario.ContextId.ToString()
+ " - Count: " + _targetScenario.TrainingSet.Count);
if (_targetScenario.TrainingSet.Count == TrainingThreshold)
{
if (TrackerNotification != null)
{
var args = new TrackerNotificationEventArgs
{
Code = TrackerNotificationCode.TrainingCompleted,
TargetScenario = _targetScenario
};
ThreadPool.QueueUserWorkItem(new WaitCallback(DoNotification), args);
}
}
}
// resume capture before unlock
_trackerTimer.Start();
}
}
