itkMRCImageIO.h

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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.
 *
 *=========================================================================*/
#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_ASSIGN(MRCImageIO);

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

  itkNewMacro(Self);

  itkTypeMacro(MRCImageIO, StreamingImageIOBase);

  // 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 & is);

  virtual void WriteImageInformation(const void *bufferBegin);

  MRCHeaderObject::Pointer m_MRCHeader;
};
} // namespace itk

#endif