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/*
* Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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
*
* 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 otbInPlacePassFilter_h
#define otbInPlacePassFilter_h
#include "itkInPlaceImageFilter.h"
#include "otbImage.h"
#include "itkImageRegionIterator.h"
namespace otb
{
/** \class InPlacePassFilter
* \brief This filter has the only purpose to recall regions
*
* This class is implemented to recall regions. Due to ITK implementation
* if the pipeline of the algorithm has branch (diamond) one might have
* an input with two requested regions : one from branch 1 (A) and one from
* branch 2 (B). Problem is after updating and generating data on branch 1
* branch 2 will not propagate its region B again,and will use region A
* instead. By memorizing the region this buffer filter can be placed in
* in front of each branch so that the requested region will be saved.v
*
* \ingroup OTBImageManipulation
*/
template <class TInputImage>
class ITK_EXPORT InPlacePassFilter : public itk::InPlaceImageFilter<TInputImage, TInputImage>
{
public:
/** typedef for standard classes. */
typedef TInputImage InputImageType;
typedef InPlacePassFilter Self;
typedef itk::InPlaceImageFilter<InputImageType, InputImageType> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(InPlacePassFilter, InPlaceImageFilter);
protected:
InPlacePassFilter()
{
this->InPlaceOn();
}
~InPlacePassFilter() override
{
}
void ThreadedGenerateData(const typename InputImageType::RegionType& outputRegionForThread, itk::ThreadIdType itkNotUsed(threadId)) override
{
typename InputImageType::ConstPointer input(this->GetInput());
typename InputImageType::Pointer output(this->GetOutput());
itk::ImageRegionConstIterator<InputImageType> it(input, outputRegionForThread);
itk::ImageRegionIterator<InputImageType> oit(output, outputRegionForThread);
for (oit.GoToBegin(), it.GoToBegin(); !oit.IsAtEnd() || !it.IsAtEnd(); ++it, ++oit)
{
oit.Set(it.Get());
}
}
private:
InPlacePassFilter(const Self&) = delete;
void operator=(const Self&) = delete;
};
} // End namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#endif
#endif
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