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itkFFTWComplexToComplex1DFFTImageFilter.h
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itkFFTWComplexToComplex1DFFTImageFilter.h
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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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 itkFFTWComplexToComplex1DFFTImageFilter_h
#define itkFFTWComplexToComplex1DFFTImageFilter_h
#include "itkComplexToComplex1DFFTImageFilter.h"
#include "itkFFTWCommonExtended.h"
#include "itkImageRegionSplitterDirection.h"
#include <vector>
namespace itk
{
/** \class FFTWComplexToComplex1DFFTImageFilter
* \brief only do FFT along one dimension using FFTW as a backend.
*
* \ingroup Ultrasound
*/
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT FFTWComplexToComplex1DFFTImageFilter
: public ComplexToComplex1DFFTImageFilter<TInputImage, TOutputImage>
{
public:
using Self = FFTWComplexToComplex1DFFTImageFilter;
using Superclass = ComplexToComplex1DFFTImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Standard class type alias.*/
using InputImageType = typename Superclass::InputImageType;
using OutputImageType = typename Superclass::OutputImageType;
using OutputImageRegionType = typename OutputImageType::RegionType;
/**
* the proxy type is a wrapper for the fftw API
* since the proxy is only defined over double and float,
* trying to use any other pixel type is inoperative, as
* is trying to use double if only the float FFTW1D version is
* configured in, or float if only double is configured.
*/
using FFTW1DProxyType = typename fftw::ComplexToComplexProxy<typename TInputImage::PixelType::value_type>;
using PlanArrayType = typename std::vector<typename FFTW1DProxyType::PlanType>;
using PlanBufferPointerType = typename std::vector<typename FFTW1DProxyType::ComplexType *>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(FFTWComplexToComplex1DFFTImageFilter, ComplexToComplex1DFFTImageFilter);
protected:
FFTWComplexToComplex1DFFTImageFilter();
virtual ~FFTWComplexToComplex1DFFTImageFilter();
void
BeforeThreadedGenerateData() override;
void
ThreadedGenerateData(const OutputImageRegionType &, ThreadIdType threadID) override;
/** Override to return a splitter that does not split along the direction we
* are performing the transform. */
const ImageRegionSplitterBase *
GetImageRegionSplitter() const override;
private:
FFTWComplexToComplex1DFFTImageFilter(const Self &); // purposely not implemented
void
operator=(const Self &); // purposely not implemented
ImageRegionSplitterDirection::Pointer m_ImageRegionSplitter;
/** Destroy FFTW Plans and associated buffers. */
void
DestroyPlans();
bool m_PlanComputed;
PlanArrayType m_PlanArray;
unsigned int m_LastImageSize;
PlanBufferPointerType m_InputBufferArray;
PlanBufferPointerType m_OutputBufferArray;
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkFFTWComplexToComplex1DFFTImageFilter.hxx"
#endif
#endif // itkFFTWComplexToComplex1DFFTImageFilter_h