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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    itkStimulateImageIO.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

  Portions of this code are covered under the VTK copyright.
  See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkStimulateImageIO_h
#define __itkStimulateImageIO_h

#ifdef _MSC_VER
#pragma warning ( disable : 4786 )
#endif

#include <fstream>
#include "itkImageIOBase.h"

namespace itk
{

/** \class StimulateImageIO
 *
 *  \brief ImageIO class for reading SDT/SPR (Stimulate) images
 *  This format is similar to a MetaImageIO file:
 *  The user should specify the .spr file (not the data file : .sdt)
 *
 *  This is based on the notes from: 
 *
 *      http://www.cmrr.umn.edu/stimulate/stimUsersGuide/node57.html
 *
 *  It has been tested on:
 *
 *      ftp://ftp.cmrr.umn.edu/pub/stimulate/data/
 *
 *  \warning Beware of the scalar range of some files (See GetDisplayRange).
 *
 * \author Mathieu Malaterre
 *  CREATIS team at INSA - Lyon 2002
 *    http://www.creatis.insa-lyon.fr
 *
 * \ingroup IOFilters
 *
 */
class ITK_EXPORT StimulateImageIO : public ImageIOBase
{
public:
  /** Standard class typedefs. */
  typedef StimulateImageIO   Self;
  typedef ImageIOBase        Superclass;
  typedef SmartPointer<Self> Pointer;
  
  /** Method for creation through the object factory. */
  itkNewMacro(Self);

  /** Run-time type information (and related methods). */
  itkTypeMacro(StimulateImageIO, Superclass);

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

  /** Determine the file type. Returns true if this ImageIO can read the
   * file specified. */
  virtual bool CanReadFile(const char*);
  
  /** Set the spacing and dimesion information for the current filename. */
  virtual void ReadImageInformation();
  
  /** Reads the data from disk into the memory buffer provided. */
  virtual void Read(void* buffer);

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

  /** Determine the file type. Returns true if this ImageIO can read the
   * file specified. */
  virtual bool CanWriteFile(const char*);

  /** Writes the spacing and dimentions of the image.
   * Assumes SetFileName has been called with a valid file name. */
  virtual void WriteImageInformation() {};
  
  /** Writes the data to disk from the memory buffer provided. Make sure
   * that the IORegion has been set properly. */
  virtual void Write(const void* buffer);

  /** Two values used for applying intensity windowing to the data set. The pair
   *  of numbers represent a low value and a hight value. Pixel values below the
   *  low_value will be displayed as black and voxels with values above the
   *  high_value will be displayed as white. Pixels with values within the display
   *  range are displayed with a grey value that is scaled linearly between the
   *  low_value and high_value. */
  itkGetVectorMacro( DisplayRange, const float, 2);

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

  bool OpenStimulateFileForReading(std::ifstream& os, const char* filename);
  bool OpenStimulateFileForWriting(std::ofstream& os, const char* filename);
  void InternalReadImageInformation(std::ifstream& file);

private:
  std::string m_DataFileName;
  char    m_SdtOrient[256];
  float   m_DisplayRange[2];
  float   m_DisplayThresh;
  char    m_FidName[256];

  StimulateImageIO(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
};

} // end namespace itk

#endif // __itkStimulateImageIO_h