itkTIFFImageIO.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkTIFFImageIO.h,v $
  Language:  C++
  Date:      $Date: 2004/01/08 00:39:08 $
  Version:   $Revision: 1.2 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.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 __itkTIFFImageIO_h
#define __itkTIFFImageIO_h

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

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

namespace itk
{

/* \brief ImageIO object for reading and writing TIFF images
 *
 * \ingroup IOFilters
 *
 */

//BTX
class TIFFReaderInternal;
//ETX

class ITK_EXPORT TIFFImageIO : public ImageIOBase
{
public:
  typedef TIFFImageIO            Self;
  typedef ImageIOBase  Superclass;
  typedef SmartPointer<Self>  Pointer;
  
  itkNewMacro(Self);

  itkTypeMacro(TIFFImageIO, ImageIOBase);

  /*-------- 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);

  enum { NOFORMAT, RGB_, GRAYSCALE, PALETTE_RGB, PALETTE_GRAYSCALE, OTHER };

  //BTX
  enum { // Compression types
    NoCompression,
    PackBits,
    JPEG,
    Deflate,
    LZW
  };
  //ETX

  // Description:
  // Set compression type. Sinze LZW compression is patented outside US, the
  // additional work steps have to be taken in order to use that compression.
  void SetCompressionToNoCompression() { this->SetCompression(NoCompression); }
  void SetCompressionToPackBits()      { this->SetCompression(PackBits); }
  void SetCompressionToJPEG()          { this->SetCompression(JPEG); }
  void SetCompressionToDeflate()       { this->SetCompression(Deflate); }
  void SetCompressionToLZW()           { this->SetCompression(LZW); }

  itkSetMacro(Compression,int);

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

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

  void InitializeColors();
  void ReadGenericImage( void *out, 
                         unsigned int itkNotUsed(width), 
                         unsigned int height );
  int EvaluateImageAt( void* out, void* in );

  unsigned int  GetFormat();

  void GetColor( int index, unsigned short *red, 
                                 unsigned short *green, unsigned short *blue );


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

  unsigned short *ColorRed;
  unsigned short *ColorGreen;
  unsigned short *ColorBlue;
  int TotalColors;
  unsigned int ImageFormat;
  TIFFReaderInternal * m_InternalImage;
  int m_Compression;
};

} // end namespace itk

#endif // __itkTIFFImageIO_h

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