itkFDFImageIO.h

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/*  Copyright (C) 2004 Glenn Pierce.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __itkFDFImageIO_h
#define __itkFDFImageIO_h
#include "ITKIOFDFExport.h"
#include "itkImageIOBase.h"

namespace itk
{

/* \brief ImageIO object for reading and writing FDF images
 *
 * \ingroup IOFilters
 *
 */
class ITKIOFDF_EXPORT FDFImageIO : public ImageIOBase
{
public:
  typedef FDFImageIO   Self;
  typedef ImageIOBase  Superclass;
  typedef SmartPointer<Self>  Pointer;

  itkNewMacro(Self);

  itkTypeMacro(FDFImageIO, ImageIOBase);

  virtual bool SupportsDimension( unsigned long dim )
    {
    if( dim == 2 || dim == 3 )
      {
      return true;
      }
    else
      {
      return false;
      }
    }


  /*-------- This part of the interface deals with reading data. ------ */

  virtual bool CanReadFile(const char*);

  virtual void ReadImageInformation();

//   virtual const std::type_info& GetPixelType() const;

  virtual void Read(void* buffer);

  virtual void ReadVolume(void* buffer);

//   virtual unsigned int GetComponentSize() const;

  /*-------- This part of the interfaces deals with writing data. ----- */

  virtual bool CanWriteFile(const char*);

  virtual void WriteImageInformation();

  virtual void Write(const void* buffer);

protected:
  FDFImageIO();
  ~FDFImageIO();
  void PrintSelf(std::ostream& os, Indent indent) const;

  void WriteSlice(std::string& fileName, const void* buffer);

  int ReadHeader(const char *FileNameToRead);

private:
  FDFImageIO(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  void SwapBytesIfNecessary(void* buffer, unsigned long numberOfPixels);

  // Position after ReadImageInformation.
  size_t m_InputPosition;

  std::string          m_SpatialRank;
  std::string          m_Checksum;
  std::string          m_Bits;
  std::vector<int>     m_Size;
  std::vector<float>   m_Location;
  std::vector<float>   m_Span;
  std::vector<float>   m_Roi;
};

} // end namespace itk


#define RAISE_EXCEPTION() \
        { ExceptionObject exception(__FILE__, __LINE__); \
        exception.SetDescription("File cannot be read"); \
        throw exception; }

#endif