/*

 * HEIF codec.

 * Copyright (c) 2026 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_ID_CREATOR_H

#define LIBHEIF_ID_CREATOR_H

#include "error.h"

#include <cstdint>

class IDCreator

{

public:

  enum class Namespace { item, track, entity_group };

  void set_unif(bool flag) { m_unif = flag; }

  bool get_unif() const { return m_unif; }

  // Returns a new unique ID for the given namespace.

  // In non-unif mode: separate counters per namespace.

  // In unif mode: single global counter shared across all namespaces.

  // Returns error on overflow (counter would exceed 0xFFFFFFFF).

  Result<uint32_t> get_new_id(Namespace ns);

private:

  bool m_unif = false;

  uint32_t m_next_id_item = 1;

  uint32_t m_next_id_track = 1;

  uint32_t m_next_id_entity_group = 1;

  uint32_t m_next_id_global = 1;  // used in unif mode

};

#endif