public static extern tErr CameraEventCallbackRegister(UInt32 Camera, [In, Out] tCameraEventCallback Callback, IntPtr Context);
public static extern tErr CameraEventCallbackUnRegister(UInt32 Camera, [In, Out] tCameraEventCallback Callback);
// Setup the camera up for streaming.
static bool CameraStart()
{
tFrameCallback lFrameCB = new tFrameCallback(FrameDoneCB);
tCameraEventCallback lEventCB = new tCameraEventCallback(EventDone);
UInt32 FrameSize = 0;
IntPtr Context = IntPtr.Zero;
if (Pv.AttrExists(GCamera.Handle, "EventsEnable1") == tErr.eErrNotFound)
{
Console.WriteLine("This camera does not support event notifications.");
return(false);
}
// Adjust packet size for optimal performance.
Pv.CaptureAdjustPacketSize(GCamera.Handle, 8228);
// Determines how big the frame buffers should be.
if (Pv.AttrUint32Get(GCamera.Handle, "TotalBytesPerFrame", ref FrameSize) == 0)
{
tFrame Frame = new tFrame();
byte[] Buffer = new byte[FrameSize];
GCHandle pBuffer = GCHandle.Alloc(Buffer, GCHandleType.Pinned);
// Set the frame's fields.
// Handle to the Camera.
Frame.Context.Field0 = new IntPtr(GCamera.Handle);
// Address of the pinned object.
Frame.ImageBuffer = pBuffer.AddrOfPinnedObject();
// Buffer size.
Frame.ImageBufferSize = FrameSize;
// Setup the event channel.
Pv.AttrUint32Set(GCamera.Handle, "EventsEnable1", 0);
Pv.AttrEnumSet(GCamera.Handle, "EventSelector", "AcquisitionStart");
Pv.AttrEnumSet(GCamera.Handle, "EventNotification", "On");
Pv.AttrEnumSet(GCamera.Handle, "EventSelector", "AcquisitionEnd");
Pv.AttrEnumSet(GCamera.Handle, "EventNotification", "On");
Pv.AttrEnumSet(GCamera.Handle, "EventSelector", "FrameTrigger");
Pv.AttrEnumSet(GCamera.Handle, "EventNotification", "On");
if (Pv.CameraEventCallbackRegister(GCamera.Handle, lEventCB, Context) != tErr.eErrSuccess)
{
Console.WriteLine("There was an error accessing the driver.");
return(false);
}
// Start the capture mode.
if (Pv.CaptureStart(GCamera.Handle) == 0)
{
if (Pv.AttrFloat32Set(GCamera.Handle, "FrameRate", 5) == 0)
{
// Set the camera in continuous acquisition mode,and in "Freerun".
if (Pv.AttrEnumSet(GCamera.Handle, "FrameStartTriggerMode", "FixedRate") == 0)
{
// Set the acquisition mode into continuous.
if (Pv.CommandRun(GCamera.Handle, "AcquisitionStart") != 0)
{
// If that fails, reset the camera to non-capture mode.
Pv.CaptureEnd(GCamera.Handle);
Console.WriteLine("Failed to start.");
return(false);
}
else
{
// Pin down a copy of the frame structure.
GCHandle pFrame = GCHandle.Alloc(Frame, GCHandleType.Pinned);
// Enqueue the frame.
Pv.CaptureQueueFrame(GCamera.Handle, pFrame.AddrOfPinnedObject(), lFrameCB);
return(true);
}
}
else
{
return(false);
}
}
else
{
return(false);
}
}
else
{
return(false);
}
}
else
{
return(false);
}
}
