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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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.
*
*=========================================================================*/
#ifndef _itkImageFileCastWriter_hxx
#define _itkImageFileCastWriter_hxx
#include "itkImageFileCastWriter.h"
#include "itkDataObject.h"
#include "itkObjectFactoryBase.h"
#include "itkImageIOFactory.h"
#include "itkCommand.h"
#include <vnl/vnl_vector.h>
#include "itkVectorImage.h"
#include "itkDefaultConvertPixelTraits.h"
#include "itkMetaImageIO.h"
namespace itk
{
//---------------------------------------------------------
template <class TInputImage>
std::string
ImageFileCastWriter<TInputImage>::GetDefaultOutputComponentType()
{
/** Make a dummy imageIO object, which has some handy functions */
const auto dummyImageIO = MetaImageIO::New();
/** Set the pixeltype. */
using ScalarType = typename InputImageType::InternalPixelType;
dummyImageIO->SetPixelTypeInfo(static_cast<const ScalarType *>(nullptr));
/** Get its description. */
return ImageIOBase::GetComponentTypeAsString(dummyImageIO->GetComponentType());
}
//---------------------------------------------------------
template <class TInputImage>
void
ImageFileCastWriter<TInputImage>::GenerateData()
{
const InputImageType * input = this->GetInput();
itkDebugMacro("Writing file: " << this->GetFileName());
// Make sure that the image is the right type and no more than
// four components.
using ScalarType = typename InputImageType::PixelType;
if (strcmp(input->GetNameOfClass(), "VectorImage") == 0)
{
using VectorImageScalarType = typename InputImageType::InternalPixelType;
// this->GetImageIO()->SetPixelTypeInfo( typeid(VectorImageScalarType) );
this->GetModifiableImageIO()->SetPixelTypeInfo(static_cast<const VectorImageScalarType *>(nullptr));
using AccessorFunctorType = typename InputImageType::AccessorFunctorType;
this->GetModifiableImageIO()->SetNumberOfComponents(AccessorFunctorType::GetVectorLength(input));
}
else
{
// Set the pixel and component type; the number of components.
// this->GetImageIO()->SetPixelTypeInfo(typeid(ScalarType));
this->GetModifiableImageIO()->SetPixelTypeInfo(static_cast<const ScalarType *>(nullptr));
}
/** Setup the image IO for writing. */
this->GetModifiableImageIO()->SetFileName(this->GetFileName());
/** Get the number of Components */
unsigned int numberOfComponents = this->GetImageIO()->GetNumberOfComponents();
/** Extract the data as a raw buffer pointer and possibly convert.
* Converting is only possible if the number of components equals 1 */
if (this->m_OutputComponentType !=
this->GetImageIO()->GetComponentTypeAsString(this->GetImageIO()->GetComponentType()) &&
numberOfComponents == 1)
{
void * convertedDataBuffer = nullptr;
const DataObject * inputAsDataObject = dynamic_cast<const DataObject *>(input);
/** convert the scalar image to a scalar image with another componenttype
* The imageIO's PixelType is also changed */
if (this->m_OutputComponentType == "char")
{
convertedDataBuffer = this->ConvertScalarImage<char>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "unsigned_char")
{
convertedDataBuffer = this->ConvertScalarImage<unsigned char>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "short")
{
convertedDataBuffer = this->ConvertScalarImage<short>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "unsigned_short")
{
convertedDataBuffer = this->ConvertScalarImage<unsigned short>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "int")
{
convertedDataBuffer = this->ConvertScalarImage<int>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "unsigned_int")
{
convertedDataBuffer = this->ConvertScalarImage<unsigned int>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "long")
{
convertedDataBuffer = this->ConvertScalarImage<long>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "unsigned_long")
{
convertedDataBuffer = this->ConvertScalarImage<unsigned long>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "float")
{
convertedDataBuffer = this->ConvertScalarImage<float>(inputAsDataObject);
}
else if (this->m_OutputComponentType == "double")
{
convertedDataBuffer = this->ConvertScalarImage<double>(inputAsDataObject);
}
/** Do the writing */
this->GetModifiableImageIO()->Write(convertedDataBuffer);
/** Release the caster's memory */
this->m_Caster = nullptr;
}
else
{
/** No casting needed or possible, just write */
const void * dataPtr = input->GetBufferPointer();
this->GetModifiableImageIO()->Write(dataPtr);
}
}
} // end namespace itk
#endif
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