itkImageFileWriter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkImageFileWriter.h,v $
  Language:  C++
  Date:      $Date: 2007-03-17 21:02:11 $
  Version:   $Revision: 1.20 $

  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 __itkImageFileWriter_h
#define __itkImageFileWriter_h

#include "itkProcessObject.h"
#include "itkImageIOBase.h"
#include "itkExceptionObject.h"
#include "itkSize.h"
#include "itkImageIORegion.h"

namespace itk
{

class ImageFileWriterException : public ExceptionObject 
{
public:
  itkTypeMacro( ImageFileWriterException, ExceptionObject );

  ImageFileWriterException(const char *file, unsigned int line, 
                           const char* message = "Error in IO",
                           const char* loc = "Unknown" ) : 
    ExceptionObject(file, line, message, loc)
  {
  }

  ImageFileWriterException(const std::string &file, unsigned int line, 
                           const char* message = "Error in IO",
                           const char* loc = "Unknown" ) :
    ExceptionObject(file, line, message, loc)
  {
  }
};


template <class TInputImage>
class ITK_EXPORT ImageFileWriter : public ProcessObject
{
public:
  typedef ImageFileWriter           Self;
  typedef ProcessObject             Superclass;
  typedef SmartPointer<Self>        Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(ImageFileWriter,ProcessObject);

  typedef TInputImage                         InputImageType;
  typedef typename InputImageType::Pointer    InputImagePointer;
  typedef typename InputImageType::RegionType InputImageRegionType; 
  typedef typename InputImageType::PixelType  InputImagePixelType; 

  void SetInput(const InputImageType *input);
  const InputImageType * GetInput(void);
  const InputImageType * GetInput(unsigned int idx);

  itkSetStringMacro(FileName);
  itkGetStringMacro(FileName);

  void SetImageIO (ImageIOBase* io)
    {
    if (this->m_ImageIO != io)
      {
      this->Modified();
      this->m_ImageIO = io;
      }
    m_FactorySpecifiedImageIO = false;
    }
  itkGetObjectMacro(ImageIO,ImageIOBase);

  virtual void Write(void);

  void SetIORegion(const ImageIORegion & region);
  itkGetConstReferenceMacro( IORegion, ImageIORegion );

  virtual void Update()
    {
    this->Write();\
    }

  itkSetMacro(UseCompression,bool);
  itkGetConstReferenceMacro(UseCompression,bool);
  itkBooleanMacro(UseCompression);

  itkSetMacro(UseInputMetaDataDictionary,bool);
  itkGetConstReferenceMacro(UseInputMetaDataDictionary,bool);
  itkBooleanMacro(UseInputMetaDataDictionary);


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

  void GenerateData(void);

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

  std::string        m_FileName;
  
  ImageIOBase::Pointer m_ImageIO;
  bool                 m_UserSpecifiedImageIO; // track whether the ImageIO
                                                // is user specified
  
  ImageIORegion m_IORegion;
  bool          m_UserSpecifiedIORegion;    // track whether the region
                                            // is user specified
  bool          m_FactorySpecifiedImageIO;  //track whether the factory
                                            //  mechanism set the ImageIO
  bool m_UseCompression;
  bool m_UseInputMetaDataDictionary;        // whether to use the
                                            // MetaDataDictionary from the
                                            // input or not.
};

  
} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkImageFileWriter.txx"
#endif

#endif // __itkImageFileWriter_h

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