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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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkMetaDataObject.h"
#include "itksys/SystemTools.hxx"
#include "itkNrrdImageIO.h"
/** This test was written in response to ITK task 2549
* https://itk.icts.uiowa.edu/jira/browse/ITK-2549
*
* The complaint was that MetaData items were not getting
* copied from an image to the NRRD file on disk.
*
* If this test succeeds, this bug has been fixed.
*/
int
itkNrrdMetaDataTest( int ac, char* av[] )
{
if(ac < 2)
{
std::cerr << "Missing data directory argument" << std::endl;
return EXIT_FAILURE;
}
// Image type
typedef itk::Image<unsigned char,3> ImageType;
// create dummy image
ImageType::Pointer image1 = ImageType::New();
ImageType::SizeType size = { {2,2,2} };
image1->SetRegions(size);
image1->Allocate();
image1->FillBuffer(1);
const char *metaDataObjectName = "NrrdTest";
const char *metaDataObjectValue = "123456";
// add a metadataobject to the dictionary
itk::MetaDataDictionary &dict = image1->GetMetaDataDictionary();
itk::EncapsulateMetaData<std::string>(dict,metaDataObjectName,metaDataObjectValue);
// write the file then read it back in.
typedef itk::ImageFileWriter<ImageType> ImageWriterType;
typedef itk::ImageFileReader<ImageType> ImageReaderType;
// test uses 1st arg to specify where to drop data
std::string fname = av[1];
fname += "/metadatatest.nrrd";
// set up writer
ImageWriterType::Pointer writer = ImageWriterType::New();
writer->SetImageIO(itk::NrrdImageIO::New());
writer->SetFileName(fname.c_str());
writer->SetInput(image1);
// set up reader
ImageReaderType::Pointer reader = ImageReaderType::New();
reader->SetFileName(fname.c_str());
reader->SetImageIO(itk::NrrdImageIO::New());
ImageType::Pointer image2;
// write and then read
try
{
writer->Update();
reader->Update();
image2 = reader->GetOutput();
}
catch (itk::ExceptionObject & e)
{
std::cerr << "Exception in file reader or writer " << std::endl;
std::cerr << e.GetDescription() << std::endl;
std::cerr << e.GetLocation() << std::endl;
return EXIT_FAILURE;
}
// see if the test metaDataObject was copied to the output and is
// present in the image read in.
dict = image2->GetMetaDataDictionary();
std::string NrrdTest;
// if it exists and the string matches what we put in on the image
// to write, AOK.
if(itk::ExposeMetaData<std::string>(dict,metaDataObjectName,NrrdTest) != false &&
NrrdTest == metaDataObjectValue)
{
return EXIT_SUCCESS;
}
// oops!
return EXIT_FAILURE;
}
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