/*

 * HEIF mask image codec.

 *

 * Copyright (c) 2023 Dirk Farin <dirk.farin@gmail.com>

 * Copyright (c) 2023 Brad Hards <bradh@frogmouth.net>

 *

 * This file is part of libheif.

 *

 * libheif 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.

 *

 * libheif 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 libheif.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef LIBHEIF_MASK_IMAGE_H

#define LIBHEIF_MASK_IMAGE_H

#include "box.h"

#include "bitstream.h"

#include "pixelimage.h"

#include "file.h"

#include "context.h"

#include <memory>

#include <string>

#include <vector>

#include <set>

/**

  * Mask Configuration Property (mskC).

  *

  * Each mask image item (mski) shall have an associated MaskConfigurationProperty

  * that provides information required to generate the mask of the associated mask

  * item.

  */

class Box_mskC : public FullBox

{

public:

  Box_mskC()

  {

    set_short_type(fourcc("mskC"));

  }

  bool is_essential() const override { return true; }

  std::string dump(Indent&) const override;

  Error write(StreamWriter& writer) const override;

  uint8_t get_bits_per_pixel() const

  { return m_bits_per_pixel; }

  void set_bits_per_pixel(uint8_t bits_per_pixel)

  { m_bits_per_pixel = bits_per_pixel; }

protected:

  Error parse(BitstreamRange& range, const heif_security_limits* limits) override;

private:

  uint8_t m_bits_per_pixel = 0;

};

class MaskImageCodec

{

public:

  static Error decode_mask_image(const HeifContext* context,

                                  heif_item_id ID,

                                  std::shared_ptr<HeifPixelImage>& img,

                                  const std::vector<uint8_t>& data);

};

class ImageItem_mask : public ImageItem

{

public:

  ImageItem_mask(HeifContext* ctx, heif_item_id id) : ImageItem(ctx, id) {}

  ImageItem_mask(HeifContext* ctx) : ImageItem(ctx) {}

  uint32_t get_infe_type() const override { return fourcc("mski"); }

  heif_compression_format get_compression_format() const override { return heif_compression_mask; }

  bool is_ispe_essential() const override { return true; }

  int get_luma_bits_per_pixel() const override;

  int get_chroma_bits_per_pixel() const override { return 0; }

  Result<std::shared_ptr<HeifPixelImage>> decode_compressed_image(const heif_decoding_options& options,

                                                                  bool decode_tile_only, uint32_t tile_x0, uint32_t tile_y0,

                                                                  std::set<heif_item_id> processed_ids) const override;

  Result<Encoder::CodedImageData> encode(const std::shared_ptr<HeifPixelImage>& image,

                                         heif_encoder* encoder,

                                         const heif_encoding_options& options,

                                         heif_image_input_class input_class) override;

};

#endif //LIBHEIF_MASK_IMAGE_H