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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include <iostream>
#include "itkVideoIOFactory.h"
#include "itkOpenCVVideoIOFactory.h"
#include "opencv2/core/version.hpp"
#if defined(CV_VERSION_EPOCH)
// OpenCV 2.4.x
# include "highgui.h"
#else
// OpenCV 3.x
# include "opencv2/videoio/videoio_c.h"
#endif
using SizeValueType = itk::SizeValueType;
///////////////////////////////////////////////////////////////////////////////
// This tests all of the functionality of the OpenCVVideoIO
//
// Usage: [Video Input] [Non-Video Input] [Video Output] [Width] [Height]
// [Num Frames] [FpS]
int
test_OpenCVVideoIOFactory(char * input, char * output, SizeValueType cameraNumber)
{
int ret = EXIT_SUCCESS;
//////
// Register the OpenCVVideoIOFactory.
//
// There's something strange going on here that makes the factories not be
// registered by default because of the order in which the includes happen.
// The real strangeness seems to be in ITK's system with the modularized
// framework since none of the factories get reigstered by default.
itk::ObjectFactoryBase::RegisterFactory(itk::OpenCVVideoIOFactory::New());
//////
// Create the VideoIOBase for reading from a file
//////
std::cout << "Trying to create IO for reading from file..." << std::endl;
itk::VideoIOBase::Pointer ioReadFile =
itk::VideoIOFactory::CreateVideoIO(itk::VideoIOFactory::IOModeEnum::ReadFileMode, input);
if (!ioReadFile)
{
std::cerr << "Did not create valid VideoIO for reading from file " << std::endl;
ret = EXIT_FAILURE;
}
//////
// Create the VideoIOBase for reading from a camera
//////
// Use openCV to see if we can even try to open the camera
CvCapture * cameraCapture = cvCaptureFromCAM(cameraNumber);
if (cameraCapture != nullptr)
{
std::cout << "Trying to create IO for reading from camera " << cameraNumber << "..." << std::endl;
// Release the OpenCV capture
cvReleaseCapture(&cameraCapture);
std::stringstream ss;
ss << cameraNumber;
itk::VideoIOBase::Pointer ioReadCamera =
itk::VideoIOFactory::CreateVideoIO(itk::VideoIOFactory::IOModeEnum::ReadCameraMode, ss.str().c_str());
if (!ioReadCamera)
{
std::cerr << "Did not create valid VideoIO for reading from camera" << std::endl;
ret = EXIT_FAILURE;
}
}
//////
// Create the VideoIOBase for writing to a file
//////
std::cout << "Trying to create IO for writing to file..." << std::endl;
itk::VideoIOBase::Pointer ioWrite =
itk::VideoIOFactory::CreateVideoIO(itk::VideoIOFactory::IOModeEnum::WriteMode, output);
if (!ioWrite)
{
std::cerr << "Did not create valid VideoIO for writing " << std::endl;
ret = EXIT_FAILURE;
}
std::cout << "Done !" << std::endl;
return ret;
}
int
itkOpenCVVideoIOFactoryTest(int argc, char * argv[])
{
if (argc != 4)
{
std::cerr << "Usage: [Video Input] [Video Output] [Webcam Number]" << std::endl;
return EXIT_FAILURE;
}
itk::ObjectFactoryBase::RegisterFactory(itk::OpenCVVideoIOFactory::New());
return test_OpenCVVideoIOFactory(argv[1], argv[2], std::stoi(argv[3]));
}
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