IiqDecoder.h

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/*
    RawSpeed - RAW file decoder.
 
    Copyright (C) 2009-2014 Klaus Post
    Copyright (C) 2014 Pedro Côrte-Real
 
    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 "common/RawImage.h"
#include "decoders/AbstractTiffDecoder.h"
#include "io/Buffer.h"
#include "tiff/TiffIFD.h"
#include <cstdint>
#include <utility>
#include <vector>
 
namespace rawspeed {
 
class Buffer;
class ByteStream;
class CameraMetaData;
struct PhaseOneStrip;
 
class IiqDecoder final : public AbstractTiffDecoder {
  struct IiqOffset final {
    uint32_t n;
    uint32_t offset;
 
    IiqOffset() = default;
    IiqOffset(uint32_t block, uint32_t offset_) : n(block), offset(offset_) {}
  };
 
  static std::vector<PhaseOneStrip>
  computeSripes(Buffer raw_data, std::vector<IiqOffset> offsets,
                uint32_t height);
 
public:
  static bool isAppropriateDecoder(Buffer file);
  static bool isAppropriateDecoder(const TiffRootIFD* rootIFD, Buffer file);
 
  IiqDecoder(TiffRootIFDOwner&& rootIFD, Buffer file)
      : AbstractTiffDecoder(std::move(rootIFD), file) {}
 
  RawImage decodeRawInternal() override;
  void checkSupportInternal(const CameraMetaData* meta) override;
  void decodeMetaDataInternal(const CameraMetaData* meta) override;
 
private:
  [[nodiscard]] int getDecoderVersion() const override { return 0; }
  uint32_t black_level = 0;
  void CorrectPhaseOneC(ByteStream meta_data, uint32_t split_row,
                        uint32_t split_col) const;
  void CorrectQuadrantMultipliersCombined(ByteStream data, uint32_t split_row,
                                          uint32_t split_col) const;
  enum class IiqCorr : uint8_t;
  void PhaseOneFlatField(ByteStream data, IiqCorr corr) const;
  void correctSensorDefects(ByteStream data) const;
  void correctBadColumn(uint16_t col) const;
  void handleBadPixel(uint16_t col, uint16_t row) const;
};
 
} // namespace rawspeed