/*

 * HEIF VVC codec.

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

 *

 * 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_VVC_BOXES_H

#define LIBHEIF_VVC_BOXES_H

#include "box.h"

#include <string>

#include <vector>

#include "image-items/image_item.h"

#include <memory>

#include "sequences/seq_boxes.h"

class Box_vvcC : public FullBox

{

public:

  Box_vvcC()

  {

    set_short_type(fourcc("vvcC"));

  }

  bool is_essential() const override { return true; }

  struct VvcPTLRecord {

    uint8_t num_bytes_constraint_info; // 6 bits

    uint8_t general_profile_idc; // 7 bits

    uint8_t general_tier_flag; // 1 bit

    uint8_t general_level_idc; // 8 bits

    uint8_t ptl_frame_only_constraint_flag; // 1 bit

    uint8_t ptl_multi_layer_enabled_flag; // 1 bit

    std::vector<uint8_t> general_constraint_info;

    std::vector<bool> ptl_sublayer_level_present_flag; // TODO: should we save this here or can we simply derive it on the fly?

    std::vector<uint8_t> sublayer_level_idc;

    std::vector<uint32_t> general_sub_profile_idc;

  };

  struct configuration

  {

    uint8_t LengthSizeMinusOne = 3;  // 0,1,3   default: 4 bytes for NAL unit lengths

    bool ptl_present_flag = true;

    // only of PTL present

    uint16_t ols_idx; // 9 bits

    uint8_t num_sublayers; // 3 bits

    uint8_t constant_frame_rate; // 2 bits

    uint8_t chroma_format_idc; // 2 bits

    uint8_t bit_depth_minus8; // 3 bits

    struct VvcPTLRecord native_ptl;

    uint16_t max_picture_width;

    uint16_t max_picture_height;

    uint16_t avg_frame_rate;

  };

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

  bool get_headers(std::vector<uint8_t>* dest) const;

  void set_configuration(const configuration& config) { m_configuration = config; }

  const configuration& get_configuration() const { return m_configuration; }

  void append_nal_data(const std::vector<uint8_t>& nal);

  void append_nal_data(const uint8_t* data, size_t size);

  Error write(StreamWriter& writer) const override;

protected:

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

private:

    struct NalArray

    {

      bool m_array_completeness;

      uint8_t m_NAL_unit_type;

      std::vector<std::vector<uint8_t> > m_nal_units; // only one NAL item for DCI and OPI

    };

  configuration m_configuration;

  std::vector<NalArray> m_nal_array;

};

class Box_vvc1 : public Box_VisualSampleEntry

{

public:

  Box_vvc1()

  {

    set_short_type(fourcc("vvc1"));

  }

};

Error parse_sps_for_vvcC_configuration(const uint8_t* sps, size_t size,

                                       Box_vvcC::configuration* inout_config,

                                       int* width, int* height);

#endif // LIBHEIF_VVC_BOXES_H