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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 "itkOpenCVVideoCapture.h"
#include "itkVideoFileReader.h"
#include "itkOpenCVVideoIOFactory.h"
#include "itkTestingMacros.h"
#include "opencv2/core/version.hpp"
#if !defined(CV_VERSION_EPOCH)
// OpenCV 3.x
# include "opencv2/videoio/videoio_c.h"
# include "opencv2/imgproc/imgproc_c.h" // cvCvtColor, CV_RGB2BGR, ...
#endif
// ITK type alias
using ScalarPixelType = unsigned char;
using ScalarFrameType = itk::Image<ScalarPixelType, 2>;
using ScalarVideoStreamType = itk::VideoStream<ScalarFrameType>;
using scalarReaderType = itk::VideoFileReader<ScalarVideoStreamType>;
using RGBPixelType = itk::RGBPixel<unsigned char>;
using RGBFrameType = itk::Image<RGBPixelType, 2>;
using RGBVideoStreamType = itk::VideoStream<RGBFrameType>;
using rgbReaderType = itk::VideoFileReader<RGBVideoStreamType>;
int
itkOpenCVVideoCaptureTest(int argc, char * argv[])
{
if (argc != 6)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv)
<< " inputVideo scalarOutputVideo RGBOutputVideo width height" << std::endl;
return EXIT_FAILURE;
}
itk::ObjectFactoryBase::RegisterFactory(itk::OpenCVVideoIOFactory::New());
// Test with scalars
// Set up an itk reader
itk::ObjectFactoryBase::RegisterFactory(itk::OpenCVVideoIOFactory::New());
auto scalarReader = scalarReaderType::New();
scalarReader->SetFileName(argv[1]);
// Set up OpenCVVideoCapture
using ScalarCaptureType = itk::OpenCVVideoCapture<ScalarVideoStreamType>;
ScalarCaptureType * scalarCap = new ScalarCaptureType();
scalarCap->open(scalarReader->GetOutput());
// Check FourCC
scalarCap->set(CV_CAP_PROP_FOURCC, CV_FOURCC('M', 'P', '4', '2'));
if (static_cast<int>(scalarCap->get(CV_CAP_PROP_FOURCC)) != CV_FOURCC('M', 'P', '4', '2'))
{
std::cerr << "FourCC not reporting correctly" << std::endl;
return EXIT_FAILURE;
}
// Check FpS
double eps = 0.0001;
if (scalarCap->get(CV_CAP_PROP_FPS) > 24 + eps || scalarCap->get(CV_CAP_PROP_FPS) < 24 - eps)
{
std::cerr << "FpS not reporting correctly" << std::endl;
return EXIT_FAILURE;
}
// Check width and height
if (static_cast<int>(scalarCap->get(CV_CAP_PROP_FRAME_WIDTH)) != std::stoi(argv[4]) ||
static_cast<int>(scalarCap->get(CV_CAP_PROP_FRAME_HEIGHT)) != std::stoi(argv[5]))
{
std::cerr << "Frame dimensions not reporting correctly. Got [" << scalarCap->get(CV_CAP_PROP_FRAME_WIDTH) << ','
<< scalarCap->get(CV_CAP_PROP_FRAME_HEIGHT) << "] Expected: [" << std::stoi(argv[4]) << ','
<< std::stoi(argv[5]) << ']' << std::endl;
return EXIT_FAILURE;
}
// Set up OpenCV VideoWriter
cv::VideoWriter scalarWriter(
argv[2],
static_cast<int>(scalarCap->get(CV_CAP_PROP_FOURCC)),
scalarCap->get(CV_CAP_PROP_FPS),
cv::Size(scalarCap->get(CV_CAP_PROP_FRAME_WIDTH), scalarCap->get(CV_CAP_PROP_FRAME_HEIGHT)),
false);
// Loop through the frames and write
cv::Mat outFrame;
while (scalarCap->read(outFrame))
{
scalarWriter << outFrame;
}
// Clean up
delete scalarCap;
// Test with RGB
// Set up an itk reader
itk::ObjectFactoryBase::RegisterFactory(itk::OpenCVVideoIOFactory::New());
auto rgbReader = rgbReaderType::New();
rgbReader->SetFileName(argv[1]);
// Set up OpenCVVideoCapture
using RGBCaptureType = itk::OpenCVVideoCapture<RGBVideoStreamType>;
RGBCaptureType * rgbCap = new RGBCaptureType();
rgbCap->open(rgbReader->GetOutput());
// Check FourCC
if (static_cast<int>(rgbCap->get(CV_CAP_PROP_FOURCC)) != CV_FOURCC('M', 'P', '4', '2'))
{
std::cerr << "FourCC not reporting correctly" << std::endl;
return EXIT_FAILURE;
}
// Check FpS
if (rgbCap->get(CV_CAP_PROP_FPS) > 24 + eps || rgbCap->get(CV_CAP_PROP_FPS) < 24 - eps)
{
std::cerr << "FpS not reporting correctly" << std::endl;
return EXIT_FAILURE;
}
// Set up OpenCV VideoWriter
cv::VideoWriter rgbWriter(argv[3],
static_cast<int>(rgbCap->get(CV_CAP_PROP_FOURCC)),
rgbCap->get(CV_CAP_PROP_FPS),
cv::Size(rgbCap->get(CV_CAP_PROP_FRAME_WIDTH), rgbCap->get(CV_CAP_PROP_FRAME_HEIGHT)),
true);
// Loop through the frames and write
while (rgbCap->read(outFrame))
{
rgbWriter << outFrame;
}
// Clean up
delete rgbCap;
std::cout << "Test finished." << std::endl;
return EXIT_SUCCESS;
}
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