text: /*=========================================================================
   *
   *  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 itkGPUImageToImageFilter_hxx
  #define itkGPUImageToImageFilter_hxx
  
  #include "itkGPUImageToImageFilter.h"
  
  namespace itk
  {
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GPUImageToImageFilter() : m_GPUEnabled(true)
  {
    m_GPUKernelManager = GPUKernelManager::New();
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::~GPUImageToImageFilter()
  {
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::PrintSelf(std::ostream & os,
                                                                                    Indent indent) const
  {
    Superclass::PrintSelf(os, indent);
    os << indent << "GPU: " << ( m_GPUEnabled ? "Enabled" : "Disabled" ) << std::endl;
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GenerateData()
  {
    if( !m_GPUEnabled ) // call CPU update function
      {
      Superclass::GenerateData();
      }
    else // call GPU update function
      {
      // Call a method to allocate memory for the filter's outputs
      this->AllocateOutputs();
  
      GPUGenerateData();
      }
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GraftOutput(typename itk::GPUTraits< TOutputImage >::Type *output)
  {
    typedef typename itk::GPUTraits< TOutputImage >::Type GPUOutputImage;
    typename GPUOutputImage::Pointer gpuImage = dynamic_cast< GPUOutputImage * >( this->GetOutput() );
  
    gpuImage->Graft( output );
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GraftOutput(DataObject *output)
  {
    typedef typename itk::GPUTraits< TOutputImage >::Type GPUOutputImage;
    GPUOutputImage* gpuImage = dynamic_cast<GPUOutputImage*>(output);
    if(gpuImage)
      {
      this->GraftOutput(gpuImage);
      }
    else
      {
      itkExceptionMacro( << "itk::GPUImageToImageFilter::GraftOutput() cannot cast "
                         << typeid( output ).name() << " to "
                         << typeid( GPUOutputImage * ).name() );
      }
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GraftOutput(const DataObjectIdentifierType & key, typename itk::GPUTraits< TOutputImage >::Type *output)
  {
    typedef typename itk::GPUTraits< TOutputImage >::Type GPUOutputImage;
    typename GPUOutputImage::Pointer gpuImage = dynamic_cast< GPUOutputImage * >( this->ProcessObject::GetOutput(key) );
  
    gpuImage->Graft( output );
  }
  
  template< typename TInputImage, typename TOutputImage, typename TParentImageFilter >
  void
  GPUImageToImageFilter< TInputImage, TOutputImage, TParentImageFilter >::GraftOutput(const DataObjectIdentifierType & key, DataObject *output)
  {
    typedef typename itk::GPUTraits< TOutputImage >::Type GPUOutputImage;
    GPUOutputImage* gpuImage = dynamic_cast<GPUOutputImage*>(output);
    if(gpuImage)
      {
      this->GraftOutput(key,gpuImage);
      }
    else
      {
      itkExceptionMacro( << "itk::GPUImageToImageFilter::GraftOutput() cannot cast "
                         << typeid( output ).name() << " to "
                         << typeid( GPUOutputImage * ).name() );
      }
  }
  
  } // end namespace itk
  
  #endif
  