/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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
 *
 *         http://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.
 *
 *=========================================================================*/
/*=========================================================================
 *
 *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
 *
 *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 *
 *  For complete copyright, license and disclaimer of warranty information
 *  please refer to the NOTICE file at the top of the ITK source tree.
 *
 *=========================================================================*/

#include <iostream>

#include "itkBSplineDownsampleImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkFilterWatcher.h"

int itkBSplineDownsampleImageFilterTest( int argc, char * argv [] )
{

  if( argc < 4 )
    {
    std::cerr << "Error: Missing arguments" << std::endl;
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << "inputImage outputImage splineOrder" << std::endl;
    return EXIT_FAILURE;
    }

  typedef unsigned char   PixelType;
  const unsigned int      Dimension = 3;

  typedef itk::Image< PixelType, Dimension >   ImageType;

  typedef itk::BSplineDownsampleImageFilter< ImageType, ImageType > DownsamplerFilterType;

  DownsamplerFilterType::Pointer filter = DownsamplerFilterType::New();

  FilterWatcher watcher(filter, "BSplineDownsampleImageFilter");

  typedef itk::ImageFileReader< ImageType > ReaderType;
  ReaderType::Pointer reader = ReaderType::New();

  typedef itk::ImageFileWriter< ImageType > WriterType;
  WriterType::Pointer writer = WriterType::New();

  reader->SetFileName( argv[1] );
  writer->SetFileName( argv[2] );

  const unsigned int splineOrder = atoi( argv[3] );

  filter->SetSplineOrder( splineOrder );

  filter->SetInput( reader->GetOutput() );
  writer->SetInput( filter->GetOutput() );

  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & excp )
    {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}
