MMapReader.h

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/*
    RawSpeed - RAW file decoder.
 
    Copyright (C) 2025 Roman Lebedev
 
    This library 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 2 of the License, or (at your option) any later version.
 
    This library 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 this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
 
#pragma once
 
#if !defined(_WIN32)
 
#include "io/Buffer.h"
#include <cstddef>
#include <string>
 
namespace rawspeed {
 
class MMapReader final {
  int fd;
  void* addr;
  size_t length;
 
public:
  explicit MMapReader(const std::string& fname);
 
  [[nodiscard]] Buffer getAsBuffer() const;
 
  ~MMapReader();
};
 
} // namespace rawspeed
 
#endif // !defined(_WIN32)