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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 otbScalarBufferToImageFileWriter_hxx
#define otbScalarBufferToImageFileWriter_hxx
#include "otbMacro.h"
#include "otbScalarBufferToImageFileWriter.h"
#include "itkImageRegionIterator.h"
#include "itkImageRegionIteratorWithIndex.h"
namespace otb
{
template <class TBufferType, class TOutputPixelType>
ScalarBufferToImageFileWriter<TBufferType, TOutputPixelType>::ScalarBufferToImageFileWriter()
: m_Buffer(nullptr), m_NumberOfChannels(0), m_InverseXSpacing(false)
{
m_Writer = WriterType::New();
m_ImageSize.Fill(0);
}
template <class TBufferType, class TOutputPixelType>
void ScalarBufferToImageFileWriter<TBufferType, TOutputPixelType>::GenerateData()
{
// Check image parameters
if ((m_ImageSize[0] == 0) || (m_ImageSize[1] == 0))
{
itkExceptionMacro("Invalid output image size, Size can't be null.");
}
if (m_NumberOfChannels == 0)
{
itkExceptionMacro("Invalid output image number of channels.");
}
RegionType lRegion;
IndexType lId;
lId.Fill(0);
lRegion.SetIndex(lId);
lRegion.SetSize(m_ImageSize);
typename ImageType::Pointer lImage = ImageType::New();
lImage->SetRegions(lRegion);
lImage->SetNumberOfComponentsPerPixel(m_NumberOfChannels);
lImage->Allocate();
PixelType lPix;
lPix.SetSize(m_NumberOfChannels);
lPix.Fill(itk::NumericTraits<OutputPixelType>::Zero);
lImage->FillBuffer(lPix);
// 1 specific loop for each case to save time processing
if (m_InverseXSpacing == false)
{
itk::ImageRegionIterator<ImageType> it(lImage, lRegion);
it.GoToBegin();
unsigned int cpt(0);
while (it.IsAtEnd() == false)
{
for (unsigned int i = 0; i < m_NumberOfChannels; ++i)
{
lPix[i] = static_cast<OutputPixelType>(m_Buffer[cpt]);
++cpt;
}
it.Set(lPix);
++it;
}
}
else
{
itk::ImageRegionIteratorWithIndex<ImageType> it(lImage, lRegion);
it.GoToBegin();
// cpt is the first component of the last pixel
unsigned int cpt(0);
while (it.IsAtEnd() == false)
{
IndexType index = it.GetIndex();
cpt = (m_ImageSize[1] - 1 - index[1]) * m_NumberOfChannels * m_ImageSize[0] + m_NumberOfChannels * index[0];
for (unsigned int i = 0; i < m_NumberOfChannels; ++i)
{
lPix[i] = static_cast<OutputPixelType>(m_Buffer[cpt + i]);
}
it.Set(lPix);
++it;
}
}
m_Writer->SetInput(lImage);
m_Writer->Update();
}
template <class TBufferType, class TOutputPixelType>
void ScalarBufferToImageFileWriter<TBufferType, TOutputPixelType>::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "FileName" << m_Writer->GetFileName() << std::endl;
os << indent << "Size" << m_ImageSize << std::endl;
os << indent << "NumberOfChannels" << m_NumberOfChannels << std::endl;
}
} // end namespace otb
#endif
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