private void _captureThread(object devIdf)
{
int devId = (int)devIdf;
while (keepGoing)
{
FrameRate = CalculateFrameRate();
Thread.Sleep(1);
if (VIWrapper.IsFrameReady(selectedDeviceIndex))
{
//
// writeLock = true;
output = IntPtr.Zero;
VIWrapper.GetImage(devId, ref output, false, true);
writeLock = false;
int width = VIWrapper.GetWidth(devId);
int height = VIWrapper.GetHeight(devId);
try
{
Application.Current.Dispatcher.BeginInvoke(
DispatcherPriority.Background,
new Action(() =>
{
CapturedImage = FromNativePointer(output, width, height, 3);
}));
if (this.runTest)
{
Stopwatch sw = new Stopwatch();
sw.Start();
if (CheckIfRed(this.redThreshold, array, width, height, 3))
{
redDetected.Stop();
EndLatencyTest();
}
sw.Stop();
// Console.WriteLine("It took " + sw.ElapsedTicks + " to run or" + sw.ElapsedMilliseconds + " Ms");
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}
}
private void _capThread(object deviceID)
{
int devId = (int)deviceID;
while (isCaptureRunning)
{
UpdateFrameRate(); //update the framerate.
Thread.Sleep(1);
if (isCaptureRunning && VIWrapper.IsFrameReady(devId))
{
unmanagedImagePtr = IntPtr.Zero; // Clean the pointer!
try //Enter exception safetyland!
{
VIWrapper.GetImage(devId, ref unmanagedImagePtr, false, true);
//Update Width and Height - Probably not necessary after capture starts. Move to StartCapture!
ImageWidth = VIWrapper.GetWidth(devId);
ImageHeight = VIWrapper.GetHeight(devId);
int bytesPerPixel = 3; //NOTE:Assumption of RGB24 starts here!
lock (bufferGuard) /* Enter critical section to copy data into buffer */
{
if (unmanagedImagePtr != IntPtr.Zero)
{
unsafe
{
Marshal.Copy(unmanagedImagePtr, buffer1, 0, (imageWidth * imageHeight * bytesPerPixel));
}
}
}
// Marshal.FreeHGlobal(unmanagedImagePtr); //Free the data since it should be managed.
GC.Collect(); //Enforced GC because 60frames passes a TON of data
//Now, call back registered members!
//Maybe Lock each call?? If i get crashes, try that.
foreach (Func <byte[], int> function in _callbackMethods)
{
Application.Current.Dispatcher.BeginInvoke(
DispatcherPriority.Loaded,
new Action(() =>
{
try
{
function(buffer1);
}
catch (Exception e)
{ }
}));
}
}
catch (Exception e)
{
Console.WriteLine("CAPTURE FAILURE please report to dev!. Exception -->" + e);
Console.WriteLine("Exception Source: " + e.Source);
Console.WriteLine("Stack Trace:" + e.StackTrace);
}
}
}
}
