/*

 * 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/>.

 */

#include "id_creator.h"

Result<uint32_t> IDCreator::get_new_id(Namespace ns)

{

  if (m_unif) {

    if (m_next_id_global == 0) {

      return Error(heif_error_Usage_error,

                   heif_suberror_Unspecified,

                   "ID namespace overflow");

    }

    return m_next_id_global++;

  }

  uint32_t* counter = nullptr;

  switch (ns) {

    case Namespace::item:

      counter = &m_next_id_item;

      break;

    case Namespace::track:

      counter = &m_next_id_track;

      break;

    case Namespace::entity_group:

      counter = &m_next_id_entity_group;

      break;

  }

  if (*counter == 0) {

    return Error(heif_error_Usage_error,

                 heif_suberror_Unspecified,

                 "ID namespace overflow");

  }

  return (*counter)++;

}