itkStreamingImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkStreamingImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-02-04 16:34:11 $
  Version:   $Revision: 1.15 $

  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 __itkStreamingImageFilter_h
#define __itkStreamingImageFilter_h

#include "itkImageSource.h"
#include "itkImageToImageFilter.h"
#include "itkImageRegionSplitter.h"

namespace itk
{

template <class TInputImage, class TOutputImage>
class ITK_EXPORT StreamingImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef StreamingImageFilter                           Self;
  typedef ImageToImageFilter<TInputImage, TOutputImage>  Superclass;
  typedef SmartPointer<Self>                             Pointer;
  typedef SmartPointer<const Self>                       ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(StreamingImageFilter,ImageToImageFilter);

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

  typedef TOutputImage                           OutputImageType;
  typedef typename OutputImageType::Pointer      OutputImagePointer;
  typedef typename OutputImageType::RegionType   OutputImageRegionType; 
  typedef typename OutputImageType::PixelType    OutputImagePixelType; 
  typedef typename Superclass::DataObjectPointer DataObjectPointer;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      InputImageType::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      OutputImageType::ImageDimension);

  typedef ImageRegionSplitter<itkGetStaticConstMacro(InputImageDimension)>
  SplitterType;
  typedef typename SplitterType::Pointer RegionSplitterPointer;

  itkSetMacro(NumberOfStreamDivisions,unsigned int);

  itkGetConstReferenceMacro(NumberOfStreamDivisions,unsigned int);

  itkSetObjectMacro(RegionSplitter, SplitterType);

  itkGetObjectMacro(RegionSplitter, SplitterType);

  virtual void UpdateOutputData(DataObject *output);

  virtual void PropagateRequestedRegion(DataObject *output);


#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(SameDimensionCheck,
    (Concept::SameDimension<InputImageDimension, OutputImageDimension>));
  itkConceptMacro(InputConvertibleToOutputCheck,
    (Concept::Convertible<InputImagePixelType, OutputImagePixelType>));

#endif

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

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

  unsigned int          m_NumberOfStreamDivisions;
  RegionSplitterPointer m_RegionSplitter;
};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkStreamingImageFilter.txx"
#endif

#endif