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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// .NAME Test of vtkJPEGReader
// .SECTION Description
//
#include "vtkImageData.h"
#include "vtkImageViewer.h"
#include "vtkJPEGReader.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
int TestJPEGReader(int argc, char* argv[])
{
if (argc <= 1)
{
cout << "Usage: " << argv[0] << " <jpeg file>" << endl;
return EXIT_FAILURE;
}
std::string filename = argv[1];
vtkSmartPointer<vtkJPEGReader> JPEGReader = vtkSmartPointer<vtkJPEGReader>::New();
// Check the image can be read
if (!JPEGReader->CanReadFile(filename.c_str()))
{
cerr << "CanReadFile failed for " << filename << "\n";
return EXIT_FAILURE;
}
// Read the input image
JPEGReader->SetFileName(filename.c_str());
JPEGReader->Update();
// Read and display the image properties
const char* fileExtensions = JPEGReader->GetFileExtensions();
cout << "File xtensions: " << fileExtensions << endl;
const char* descriptiveName = JPEGReader->GetDescriptiveName();
cout << "Descriptive name: " << descriptiveName << endl;
// Visualize
vtkSmartPointer<vtkImageViewer> imageViewer = vtkSmartPointer<vtkImageViewer>::New();
imageViewer->SetInputConnection(JPEGReader->GetOutputPort());
imageViewer->SetColorWindow(256);
imageViewer->SetColorLevel(127.5);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
imageViewer->SetupInteractor(renderWindowInteractor);
imageViewer->Render();
vtkRenderWindow* renWin = imageViewer->GetRenderWindow();
int retVal = vtkRegressionTestImage(renWin);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
renderWindowInteractor->Start();
}
return !retVal;
}
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