/// <summary>Signals the acquisition thread to stop and waits asynchronously for actual stop</summary>
void StopAcquisition()
{
if (cancellationTokenSource != null)
{
cancellationTokenSource.Cancel();
}
DeviceHandle = null;
if (acquisitionThread != null)
{
acquisitionThread.Join();
}
cancellationTokenSource = null;
Device = null;
acquisitionThread = null;
}
static bool FindFirstAvailableDevice(out GigEVision_DeviceDescriptor device)
{
var devices = new List <GigEVision_DeviceDescriptor>();
device = null;
GenICam.GigEVision_FindDevices(800, 1, devices);
if (devices == null || !devices.Any())
{
return(false);
}
device = devices.First();
Console.WriteLine(string.Format("{0} {1} [{2}]", device.ManufacturerName, device.ModelName, device.IpAddress));
return(true);
}
/// <summary>Connects to the first available GigEVision camera device and runs the acquisition thread.</summary>
void StartAcquisition()
{
connectionStatusLabel.Text = "Connecting...";
Device = FindFirstAvailableDevice();
if (Device == null)
{
connectionStatusLabel.Text = "Disconnected";
throw new Exception("Couldn't find any GigEVision camera device");
}
DeviceHandle = GenICam.GigEVision_OpenDevice(Device.IpAddress);
GenICam.GigEVision_StartAcquisition(DeviceHandle.Value, string.Empty, 1);
acquisitionThread = new Thread(AcquisitionThread);
cancellationTokenSource = new CancellationTokenSource();
acquisitionThread.Start();
}
static void RunAcquisition(GigEVision_DeviceDescriptor device)
{
var handle = GenICam.GigEVision_OpenDevice(device.IpAddress);
try
{
SetupDevice(handle);
}
catch (Exception e)
{
ResetDeviceSetup(handle);
Console.Error.WriteLine("Cannot setup camera device. Device may not be compatible with this demo.");
Console.Error.WriteLine(e.Message);
GenICam.GigEVision_CloseHandle(handle);
return;
}
Console.WriteLine("Starting acquisition, close any preview window to stop...");
// Start acquisition. That will init video stream and activate device, but frames will not be captured until triggered by software command.
GenICam.GigEVision_StartAcquisition(handle, string.Empty, 1);
DebugPreviewWindowState window1 = new DebugPreviewWindowState();
DebugPreviewWindowState window2 = new DebugPreviewWindowState();
int captureErrors = 0;
try
{
using (Image
frameBuffer1 = new Image(),
frameBuffer2 = new Image())
{
while (true)
{
if (!CaptureFramesPair(handle, 8000, 55000, frameBuffer1, frameBuffer2))
{
// Failed to receive frames.
if (++captureErrors >= 3)
{
// Three capture errors in row
throw new TimeoutException("Unable to capture frames.");
}
else
{
// Try again from beginning.
continue;
}
}
captureErrors = 0;
if (!AVL.DebugPreviewShowImage(window1, frameBuffer1) || !AVL.DebugPreviewShowImage(window2, frameBuffer2))
{
break;
}
}
}
}
finally
{
ResetDeviceSetup(handle);
GenICam.GigEVision_CloseHandle(handle);
}
}
