itkGPUDenseFiniteDifferenceImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkGPUDenseFiniteDifferenceImageFilter_h
#define __itkGPUDenseFiniteDifferenceImageFilter_h

#include "itkDenseFiniteDifferenceImageFilter.h"
#include "itkGPUFiniteDifferenceImageFilter.h"

namespace itk
{
itkGPUKernelClassMacro(GPUDenseFiniteDifferenceImageFilterKernel);

template< class TInputImage, class TOutputImage, class TParentImageFilter =
            DenseFiniteDifferenceImageFilter< TInputImage, TOutputImage > >
class ITK_EXPORT GPUDenseFiniteDifferenceImageFilter :
  public GPUFiniteDifferenceImageFilter< TInputImage, TOutputImage, TParentImageFilter >
{
public:
  typedef GPUDenseFiniteDifferenceImageFilter                                             Self;
  typedef GPUFiniteDifferenceImageFilter< TInputImage, TOutputImage, TParentImageFilter > GPUSuperclass;
  typedef TParentImageFilter                                                              CPUSuperclass;
  typedef SmartPointer< Self >                                                            Pointer;
  typedef SmartPointer< const Self >                                                      ConstPointer;

  itkTypeMacro(GPUDenseFiniteDifferenceImageFilter, GPUFiniteDifferenceImageFilter);

  typedef typename GPUSuperclass::InputImageType               InputImageType;
  typedef typename GPUSuperclass::OutputImageType              OutputImageType;
  typedef typename GPUSuperclass::FiniteDifferenceFunctionType FiniteDifferenceFunctionType;

  itkStaticConstMacro(ImageDimension, unsigned int, GPUSuperclass::ImageDimension);

  typedef typename GPUSuperclass::PixelType PixelType;

  typedef typename GPUSuperclass::TimeStepType TimeStepType;

  typedef OutputImageType UpdateBufferType;

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( OutputTimesDoubleCheck,
                   ( Concept::MultiplyOperator< PixelType, double > ) );
  itkConceptMacro( OutputAdditiveOperatorsCheck,
                   ( Concept::AdditiveOperators< PixelType > ) );
  itkConceptMacro( InputConvertibleToOutputCheck,
                   ( Concept::Convertible< typename TInputImage::PixelType, PixelType > ) );

#endif

  itkGetOpenCLSourceFromKernelMacro(GPUDenseFiniteDifferenceImageFilterKernel);

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

  virtual void ApplyUpdate(const TimeStepType& dt);

  virtual void GPUApplyUpdate(const TimeStepType& dt);

  virtual TimeStepType GPUCalculateChange();

  virtual void CopyInputToOutput();

  virtual UpdateBufferType * GetUpdateBuffer() {
    return CPUSuperclass::GetUpdateBuffer();
  }

  virtual void AllocateUpdateBuffer();

  /* GPU kernel handle for GPUApplyUpdate */
  int m_ApplyUpdateGPUKernelHandle;
private:
  GPUDenseFiniteDifferenceImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);                      //purposely not implemented

};
} // end namespace itk

#if ITK_TEMPLATE_TXX
#include "itkGPUDenseFiniteDifferenceImageFilter.hxx"
#endif

#endif