// stop streaming
void CameraStop()
{
tPvErr errCode;
//stop camera receiving triggers
if ((errCode = PvCommandRun(GCamera.Handle,"AcquisitionStop")) != ePvErrSuccess)
printf("AcquisitionStop command err: %u\n", errCode);
else
printf("AcquisitionStop success.\n");
//PvCaptureQueueClear aborts any actively written frame with Frame.Status = ePvErrDataMissing
//Further queued frames returned with Frame.Status = ePvErrCancelled
//Add delay between AcquisitionStop and PvCaptureQueueClear
//to give actively written frame time to complete
Sleep(200);
printf("Calling PvCaptureQueueClear...\n");
if ((errCode = PvCaptureQueueClear(GCamera.Handle)) != ePvErrSuccess)
printf("PvCaptureQueueClear err: %u\n", errCode);
else
printf("...Queue cleared.\n");
//stop driver stream
if ((errCode = PvCaptureEnd(GCamera.Handle)) != ePvErrSuccess)
printf("PvCaptureEnd err: %u\n", errCode);
else
printf("Driver stream stopped.\n");
}
void Camera::stop()
{
if (FSTmode_ == None)
return;
PvCommandRun(handle_, "AcquisitionStop");
PvCaptureEnd(handle_);
PvCaptureQueueClear(handle_);
FSTmode_ = None;
}
void CtrlCHandler(int Signo)
#endif
{
GCamera.Abort = true;
if(GCamera.Handle)
PvCaptureQueueClear(GCamera.Handle);
#ifndef _WINDOWS
signal(SIGINT, CtrlCHandler);
#else
return true;
#endif
}
// setup and start streaming
// return value: true == success, false == fail
bool CameraStart()
{
tPvErr errCode;
// NOTE: This call sets camera PacketSize to largest sized test packet, up to 8228, that doesn't fail
// on network card. Some MS VISTA network card drivers become unresponsive if test packet fails.
// Use PvUint32Set(handle, "PacketSize", MaxAllowablePacketSize) instead. See network card properties
// for max allowable PacketSize/MTU/JumboFrameSize.
if((errCode = PvCaptureAdjustPacketSize(GCamera.Handle,8228)) != ePvErrSuccess)
{
printf("CameraStart: PvCaptureAdjustPacketSize err: %u\n", errCode);
return false;
}
// start driver capture stream
if((errCode = PvCaptureStart(GCamera.Handle)) != ePvErrSuccess)
{
printf("CameraStart: PvCaptureStart err: %u\n", errCode);
return false;
}
// queue frame
if((errCode = PvCaptureQueueFrame(GCamera.Handle,&(GCamera.Frame),NULL)) != ePvErrSuccess)
{
printf("CameraStart: PvCaptureQueueFrame err: %u\n", errCode);
// stop driver capture stream
PvCaptureEnd(GCamera.Handle);
return false;
}
// set the camera in hardware trigger, continuous mode, and start camera receiving triggers
if((PvAttrEnumSet(GCamera.Handle,"FrameStartTriggerMode","SyncIn1") != ePvErrSuccess) ||
(PvAttrEnumSet(GCamera.Handle,"AcquisitionMode","Continuous") != ePvErrSuccess) ||
(PvCommandRun(GCamera.Handle,"AcquisitionStart") != ePvErrSuccess))
{
printf("CameraStart: failed to set camera attributes\n");
// clear queued frame
PvCaptureQueueClear(GCamera.Handle);
// stop driver capture stream
PvCaptureEnd(GCamera.Handle);
return false;
}
return true;
}
// stop streaming
void CameraStop()
{
tPvErr errCode;
//stop camera receiving triggers
if ((errCode = PvCommandRun(GCamera.Handle,"AcquisitionStop")) != ePvErrSuccess)
printf("AcquisitionStop command err: %u\n", errCode);
else
printf("Camera stopped.\n");
//clear queued frames. will block until all frames dequeued
if ((errCode = PvCaptureQueueClear(GCamera.Handle)) != ePvErrSuccess)
printf("PvCaptureQueueClear err: %u\n", errCode);
else
printf("Queue cleared.\n");
//stop driver stream
if ((errCode = PvCaptureEnd(GCamera.Handle)) != ePvErrSuccess)
printf("PvCaptureEnd err: %u\n", errCode);
else
printf("Driver stream stopped.\n");
}
// unsetup the camera
void cameraUnsetup(tCamera* camera) {
// dequeue all the frame still queued (this will block until they all have been dequeued)
PvCaptureQueueClear(camera->Handle);
// then close the camera
PvCameraClose(camera->Handle);
}
