int main()
{
INTERFACE_ID interfaceID;
SESSION_ID sessionID;
unsigned int bitsPerPixel, plotFlag;
if (imgInterfaceOpen("img0", &interfaceID) == IMG_ERR_GOOD) // "img0" is interfacename, opens an interface named img0
{
std::cout << "Interface is open" << std::endl;
if (imgSessionOpen(interfaceID, &sessionID) == IMG_ERR_GOOD)
{
std::cout << "Session is open" << std::endl;
// 30 sept 2021: try GRAB
// 1. imgInterfaceOpen (DONE)
// 2. imgSessionOpen (DONE)
// 3. imgGrabSetup (DONE)
// 4. imgSessionStartAcquisition (DONE)
// 5. imgGrab (DONE)
// 6. User specific functions
// 7. imgSessionStop Acquisition (DONE)
// 8. imgClose (DONE)
//3. imgGrabSetup
imgGrabSetup(sessionID, TRUE); //manually start acquisition with imgSessionStartAcquisition
//4. imgSessionStartAcquisition
imgSessionStartAcquisition(sessionID);
//5. imgGrab (sessionID, buffer address, uint32 waitForNext)
imgGrab(sessionID, NULL, TRUE);
//6. imgSessionSaveBufferEx to save a buffer of a session to PNG
imgSessionSaveBufferEx(sessionID, NULL, reinterpret_cast<Int8*>(const_cast<char*>("test.png")));
std::cout << "Image saved" << std::endl;
//7. imgSessionStop Acquisition
imgSessionStopAcquisition(sessionID);
std::cout << "Stop acquisition" << std::endl;
imgClose(sessionID, FALSE); // closes the session using the imgClose function
std::cout << "Session is closed" << std::endl;
}
imgClose(interfaceID, FALSE); // closes the interface using the imgClose function
std::cout << "Interface is closed" << std::endl;
}
}
I have a frame grabber PCIe-1437. I used to work with it using LABVIEW but now I'm trying to work with it using C++.
I'm exploring the function imgGrab() and I'm trying to see what kind of output I would get by obtaining a PNG file with imgSessionSaveBufferEx().
According to the NI-IMAQ function reference manual, I should get a PNG file. However, no such file was produced.
Also, my end goal is to produce an interference signal shown below.
![shiquan35_0-1633577467675.png]( "shiquan35_0-1633577467675.png")
Hence, my enquiries are these:
1. Did I misunderstand about how to implement imgGrab() and imgSessionSaveBufferEx() ?
2. Is there any advice on how can I achieve my goal?
