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/* Copyright (c) 2008-2022 the MRtrix3 contributors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#include "header.h"
#include "file/ofstream.h"
#include "file/path.h"
#include "file/utils.h"
#include "file/mgh.h"
#include "image_io/default.h"
#include "formats/list.h"
#include "raw.h"
namespace MR
{
namespace Formats
{
std::unique_ptr<ImageIO::Base> MGH::read (Header& H) const
{
if (!Path::has_suffix (H.name(), ".mgh"))
return std::unique_ptr<ImageIO::Base>();
std::ifstream in (H.name(), std::ios_base::binary);
File::MGH::read_header (H, in);
// Remaining header items appear AFTER the data
// It's possible that these data may not even be there; need to make sure that we don't go over the file size
in.seekg (MGH_DATA_OFFSET + footprint (H));
File::MGH::read_other (H, in);
in.close();
std::unique_ptr<ImageIO::Base> io_handler (new ImageIO::Default (H));
io_handler->files.push_back (File::Entry (H.name(), MGH_DATA_OFFSET));
return io_handler;
}
bool MGH::check (Header& H, size_t num_axes) const
{
if (!Path::has_suffix (H.name(), ".mgh")) return (false);
return File::MGH::check (H, num_axes);
}
std::unique_ptr<ImageIO::Base> MGH::create (Header& H) const
{
File::OFStream out (H.name(), std::ios_base::binary);
File::MGH::write_header (H, out);
out.seekp (MGH_DATA_OFFSET + footprint(H));
File::MGH::write_other (H, out);
std::unique_ptr<ImageIO::Base> io_handler (new ImageIO::Default (H));
io_handler->files.push_back (File::Entry (H.name(), MGH_DATA_OFFSET));
return io_handler;
}
}
}
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