itkGPUSmoothingRecursiveYvvGaussianImageFilter.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
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 *         http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  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.
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#ifndef itkGPUSmoothingRecursiveYvvGaussianImageFilter_h
#define itkGPUSmoothingRecursiveYvvGaussianImageFilter_h

#ifdef GPU

#include "itkImage.h"
#include "itkPixelTraits.h"
#include "itkCommand.h"
#include "itkFixedArray.h"
#include "itkSmoothingRecursiveYvvGaussianImageFilter.h"
#include "itkOpenCLUtil.h"
#include "itkGPUImageToImageFilter.h"

namespace itk
{
itkGPUKernelClassMacro(GPUSmoothingRecursiveYvvGaussianImageFilterKernel);

template< typename TInputImage, typename TOutputImage = TInputImage >
class ITK_EXPORT GPUSmoothingRecursiveYvvGaussianImageFilter:
  public         GPUImageToImageFilter< TInputImage, TOutputImage,
                                        SmoothingRecursiveYvvGaussianImageFilter< TInputImage, TOutputImage > >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(GPUSmoothingRecursiveYvvGaussianImageFilter);

  using Self = GPUSmoothingRecursiveYvvGaussianImageFilter;
  //typedef SmoothingRecursiveYvvGaussianImageFilter<TInputImage,TOutputImage>
  //   CPUSuperclass;
  using Superclass = GPUImageToImageFilter< TInputImage, TOutputImage,
                                 SmoothingRecursiveYvvGaussianImageFilter< TInputImage, TOutputImage > >;
  using GPUSuperclass = GPUImageToImageFilter< TInputImage, TOutputImage,
                                 SmoothingRecursiveYvvGaussianImageFilter< TInputImage, TOutputImage > >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  using PixelType = typename TInputImage::PixelType;
        #ifdef WITH_DOUBLE
  using RealType = typename NumericTraits< PixelType >::RealType;
  using ScalarRealType = typename NumericTraits< PixelType >::ScalarRealType;
        #else
  using RealType = typename NumericTraits< PixelType >::FloatType;
  using ScalarRealType = typename NumericTraits< PixelType >::FloatType;
        #endif

  using GPUInputImage = typename itk::GPUTraits< TInputImage >::Type;
  using GPUOutputImage = typename itk::GPUTraits< TOutputImage >::Type;

  itkTypeMacro(GPUSmoothingRecursiveYvvGaussianImageFilter,
               GPUImageToImageFilter);

  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;

  using SigmaArrayType = FixedArray< ScalarRealType,
                      itkGetStaticConstMacro(ImageDimension) >;

  using InternalRealType = typename NumericTraits< PixelType >::FloatType;
  using RealImageType = GPUImage< InternalRealType,
                    itkGetStaticConstMacro(ImageDimension) >;

  using OutputImagePointer = typename OutputImageType::Pointer;

  itkNewMacro(Self);

  void SetSigmaArray(const SigmaArrayType & sigmas);

  void SetSigma(ScalarRealType sigma);

  SigmaArrayType GetSigmaArray() const;

  ScalarRealType GetSigma() const;

  void SetNormalizeAcrossScale(bool normalizeInScaleSpace);

  itkGetConstMacro(NormalizeAcrossScale, bool);

  virtual void SetUp(ScalarRealType spacing);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( InputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< PixelType > ) );

#endif

  itkGetOpenCLSourceFromKernelMacro(GPUSmoothingRecursiveYvvGaussianImageFilterKernel);
  void SetInput(const TInputImage *input);
  using Superclass::SetInput;
protected:
  GPUSmoothingRecursiveYvvGaussianImageFilter();
  virtual ~GPUSmoothingRecursiveYvvGaussianImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  void GPUGenerateData(void);

  virtual void GenerateInputRequestedRegion() throw( InvalidRequestedRegionError );

  // Override since the filter produces the entire dataset
  void EnlargeOutputRequestedRegion(DataObject *output);

  void AllocateGPUCoefficients();

  std::ostringstream defines;

  ScalarRealType  m_B1;
  ScalarRealType  m_B2;
  ScalarRealType  m_B3;
  ScalarRealType  m_B;
  ScalarRealType *m_Bvalues;

  // Initialization matrix for anti-causal pass
  ScalarRealType *m_CPUMatrix;

  using GPUDataPointer = GPUDataManager::Pointer;

  GPUDataPointer m_GPUMMatrixDataManager;
  GPUDataPointer m_GPUBCoefficientsDataManager;
  GPUDataPointer m_GPULocalDataManager;

private:
  void BuildKernel();

  bool m_NormalizeAcrossScale;

  int m_FilterGPUKernelHandle;
  typename GPUInputImage::Pointer inPtr;
  typename GPUOutputImage::Pointer otPtr;
  typename GPUOutputImage::SizeType m_requestedSize;
  SigmaArrayType m_Sigma;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
    #include "itkGPUSmoothingRecursiveYvvGaussianImageFilter.hxx"
#endif

#endif    //GPU

#endif // itkGPUSmoothingRecursiveYvvGaussianImageFilter_h