itkMRCImageIO.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://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 itkMRCImageIO_h
#define itkMRCImageIO_h
#include "ITKIOMRCExport.h"
#include "itkStreamingImageIOBase.h"
#include "itkMRCHeaderObject.h"
#include <numeric>
 
namespace itk
{
class ITKIOMRC_EXPORT MRCImageIO : public StreamingImageIOBase
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(MRCImageIO);

  using Self = MRCImageIO;
  using Superclass = StreamingImageIOBase;
  using Pointer = SmartPointer<Self>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(MRCImageIO);
 
  // we don't use this method
  void
  WriteImageInformation() override
  {}
 
  //-------- This part of the interface deals with reading data. ------
 
  // See super class for documentation
  bool
  CanReadFile(const char *) override;
 
  // See super class for documentation
  void
  ReadImageInformation() override;
 
  // See super class for documentation
  void
  Read(void * buffer) override;
 
  // -------- This part of the interfaces deals with writing data. -----

  bool
  CanWriteFile(const char *) override;
 
  // see super class for documentation
  void
  Write(const void * buffer) override;

  static const char * m_MetaDataHeaderName;
 
protected:
  MRCImageIO();
  // ~MRCImageIO(); // default works
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  SizeType
  GetHeaderSize() const override;
 
private:
  // internal methods to update the min and max in the header based on
  // the data, in the image buffer to be written
  template <typename TPixelType>
  void
  UpdateHeaderWithMinMaxMean(const TPixelType * bufferBegin);
 
  void
  UpdateHeaderWithMinMaxMean(const void * bufferBegin);
 
  // internal methods to update the header object from the ImageIO's
  // set member variables
  void
  UpdateHeaderFromImageIO();
 
  // reimplemented
  void
  InternalReadImageInformation(std::ifstream & file);
 
  virtual void
  WriteImageInformation(const void * buffer);
 
  MRCHeaderObject::Pointer m_MRCHeader{};
};
} // namespace itk
 
#endif