/*

 * HEIF codec.

 * Copyright (c) 2024 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_MDAT_DATA_H

#define LIBHEIF_MDAT_DATA_H

#include <cstdint>

#include <vector>

#include <cassert>

#include <algorithm>

class MdatData

{

public:

  virtual ~MdatData() = default;

  // returns the start position of the appended data

  virtual size_t append_data(const std::vector<uint8_t>& data) = 0;

  virtual size_t get_data_size() const = 0;

  virtual Error write(StreamWriter&) = 0;

};

class MdatData_Memory : public MdatData

{

public:

  size_t append_data(const std::vector<uint8_t>& data) override {

    size_t startPos = m_data.size();

    m_data.insert(m_data.end(), data.begin(), data.end());

    return startPos;

  }

  size_t get_data_size() const override { return m_data.size(); }

  Error write(StreamWriter& writer) override

  {

    writer.write(m_data);

    return Error::Ok;

  }

private:

  std::vector<uint8_t> m_data;

};

#endif //LIBHEIF_MDAT_DATA_H