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/*=========================================================================
Program: Visualization Toolkit
Module: TestJPEGReader.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME Test of vtkJPEGReader
// .SECTION Description
//
#include "vtkSmartPointer.h"
#include "vtkJPEGReader.h"
#include "vtkImageData.h"
#include "vtkImageViewer.h"
#include "vtkRenderer.h"
#include "vtkRenderWindowInteractor.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.c_str() << "\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);
imageViewer->Render();
return EXIT_SUCCESS;
}
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