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/*=========================================================================
*
* 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.
*
*=========================================================================*/
#include <fstream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkStreamingImageFilter.h"
#include "itkMedianImageFilter.h"
#include "itkMetaImageIO.h"
int itkMetaImageStreamingIOTest(int ac, char* av[])
{
// Image types are defined below.
typedef unsigned char InputPixelType;
typedef unsigned char OutputPixelType;
const unsigned int Dimension = 3;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::ImageFileWriter< OutputImageType > WriterType;
typedef itk::MetaImageIO IOType;
typedef itk::MedianImageFilter< OutputImageType,
OutputImageType > FilterType;
typedef itk::StreamingImageFilter< OutputImageType,
OutputImageType > StreamingFilterType;
FilterType::Pointer filter = FilterType::New();
StreamingFilterType::Pointer streamer = StreamingFilterType::New();
ReaderType::Pointer reader = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
IOType::Pointer metaIn = IOType::New();
IOType::Pointer metaOut = IOType::New();
reader->SetImageIO(metaIn);
writer->SetImageIO(metaOut);
const std::string inputFilename = av[1];
const std::string outputFilename = av[2];
reader->SetFileName( inputFilename );
reader->SetUseStreaming(true);
writer->SetFileName( outputFilename );
InputImageType::SizeType indexRadius;
indexRadius[0] = 1; // radius along x
indexRadius[1] = 1; // radius along y
indexRadius[2] = 1; // radius along Z
filter->SetRadius( indexRadius );
//filter->SetInput( reader->GetOutput() );
streamer->SetInput( reader->GetOutput() );
writer->SetInput( streamer->GetOutput() );
// test streaming check methods
if (!metaIn->CanStreamRead())
{
std::cerr << "Failed stream read check" << std::endl;
return EXIT_FAILURE;
}
if (!metaOut->CanStreamWrite())
{
std::cerr << "Failed stream write check" << std::endl;
return EXIT_FAILURE;
}
// By default we decide to use 4 pieces, but this value can
// be changed from the command line.
unsigned int numberOfDataPieces = 4;
if( ac > 3 )
{
numberOfDataPieces = atoi( av[3] );
}
streamer->SetNumberOfStreamDivisions( numberOfDataPieces );
try
{
writer->Update();
}
catch( itk::ExceptionObject & err )
{
std::cerr << "ExceptionObject caught !" << std::endl;
std::cerr << err << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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