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/************************************************************************
*
* Copyright (C) 2009-2025 IRCAD France
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "io/itk/nifti_image_writer.hpp"
#include "io/itk/helper/progress_itk_to_fw.hpp"
#include "io/itk/itk.hpp"
#include <core/base.hpp>
#include <core/tools/dispatcher.hpp>
#include <core/tools/type_key_type_mapping.hpp>
#include <itkImageFileWriter.h>
#include <itkNiftiImageIO.h>
#include <filesystem>
namespace sight::io::itk
{
//------------------------------------------------------------------------------
void nifti_image_writer::write(sight::core::progress::observer::sptr _progress)
{
SIGHT_ASSERT("Object expired", !m_object.expired());
SIGHT_ASSERT("Object null", m_object.lock());
auto do_write =
[]<class PIXELTYPE>(const data::image::csptr _image,
const std::string& _filename,
core::progress::observer::sptr _progress)
{
SIGHT_DEBUG("itk::ImageFileWriter with PIXELTYPE " << core::type::get<PIXELTYPE>().name());
// Reader IO (*1*)
auto image_io_write = ::itk::NiftiImageIO::New();
// create writer
using itk_image_type = ::itk::Image<PIXELTYPE, 3>;
using writer_t = typename ::itk::ImageFileWriter<itk_image_type>;
auto writer = writer_t::New();
progressor progress(writer, _progress);
// create itk Image
auto itk_image = io::itk::move_to_itk<itk_image_type>(_image);
writer->SetFileName(_filename.c_str());
writer->SetInput(itk_image);
writer->SetImageIO(image_io_write); // (*3*)
// save image;
writer->Update();
};
auto file = this->get_file();
auto image = get_concrete_object();
using sight::core::tools::dispatcher;
using sight::core::tools::supported_dispatcher_types;
dispatcher<supported_dispatcher_types, decltype(do_write)>::invoke(image->type(), image, file.string(), _progress);
}
//------------------------------------------------------------------------------
std::string nifti_image_writer::extension() const
{
if(get_file().empty() || (get_file().string().find(".nii") != std::string::npos))
{
return ".nii";
}
return get_file().filename().extension().string();
}
//------------------------------------------------------------------------------
} // namespace sight::io::itk
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