DngDecoder.h

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/*
    RawSpeed - RAW file decoder.
 
    Copyright (C) 2009-2014 Klaus Post
 
    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
 
#include "adt/Optional.h"
#include "common/RawImage.h"
#include "decoders/AbstractTiffDecoder.h"
#include "tiff/TiffIFD.h"
#include <cstdint>
#include <vector>
 
namespace rawspeed {
 
class Buffer;
class CameraMetaData;
class iRectangle2D;
struct DngTilingDescription;
 
class DngDecoder final : public AbstractTiffDecoder {
public:
  static bool isAppropriateDecoder(const TiffRootIFD* rootIFD, Buffer file);
  DngDecoder(TiffRootIFDOwner&& rootIFD, Buffer file);
 
  RawImage decodeRawInternal() override;
  void decodeMetaDataInternal(const CameraMetaData* meta) override;
  void checkSupportInternal(const CameraMetaData* meta) override;
 
private:
  [[nodiscard]] int getDecoderVersion() const override { return 0; }
  bool mFixLjpeg;
  static void dropUnsuportedChunks(std::vector<const TiffIFD*>* data);
  Optional<iRectangle2D> parseACTIVEAREA(const TiffIFD* raw) const;
  void parseCFA(const TiffIFD* raw) const;
  void parseColorMatrix() const;
  void parseWhiteBalance() const;
  DngTilingDescription getTilingDescription(const TiffIFD* raw) const;
  void decodeData(const TiffIFD* raw, uint32_t sample_format) const;
  void handleMetadata(const TiffIFD* raw);
  bool decodeMaskedAreas(const TiffIFD* raw) const;
  bool decodeBlackLevels(const TiffIFD* raw) const;
  void setBlack(const TiffIFD* raw) const;
 
  Optional<int> bps;
  int compression = -1;
};
 
} // namespace rawspeed