/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2019 Blender Foundation. All rights reserved. */

/** \file
 * \ingroup depsgraph
 */

#include "intern/eval/deg_eval_runtime_backup_scene.h"

#include "BKE_sound.h"

#include "DNA_rigidbody_types.h"
#include "DNA_scene_types.h"

namespace blender::deg {

SceneBackup::SceneBackup(const Depsgraph *depsgraph) : sequencer_backup(depsgraph)
{
  reset();
}

void SceneBackup::reset()
{
  sound_scene = nullptr;
  playback_handle = nullptr;
  sound_scrub_handle = nullptr;
  speaker_handles = nullptr;
  rigidbody_last_time = -1;
}

void SceneBackup::init_from_scene(Scene *scene)
{
  BKE_sound_lock();

  sound_scene = scene->sound_scene;
  playback_handle = scene->playback_handle;
  sound_scrub_handle = scene->sound_scrub_handle;
  speaker_handles = scene->speaker_handles;

  if (scene->rigidbody_world != nullptr) {
    rigidbody_last_time = scene->rigidbody_world->ltime;
  }

  /* Clear pointers stored in the scene, so they are not freed when copied-on-written datablock
   * is freed for re-allocation. */
  scene->sound_scene = nullptr;
  scene->playback_handle = nullptr;
  scene->sound_scrub_handle = nullptr;
  scene->speaker_handles = nullptr;

  sequencer_backup.init_from_scene(scene);
}

void SceneBackup::restore_to_scene(Scene *scene)
{
  scene->sound_scene = sound_scene;
  scene->playback_handle = playback_handle;
  scene->sound_scrub_handle = sound_scrub_handle;
  scene->speaker_handles = speaker_handles;

  if (scene->rigidbody_world != nullptr) {
    scene->rigidbody_world->ltime = rigidbody_last_time;
  }

  sequencer_backup.restore_to_scene(scene);

  BKE_sound_unlock();

  reset();
}

}  // namespace blender::deg