1 files changed, 72 insertions, 0 deletions
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc
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index 00000000000..08c2697aab3
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+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_sequencer.cc
@@ -0,0 +1,72 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2019 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup depsgraph
+ */
+
+#include "intern/eval/deg_eval_runtime_backup_sequencer.h"
+
+#include "DNA_scene_types.h"
+#include "DNA_sequence_types.h"
+
+#include "BKE_sequencer.h"
+#include "BKE_sound.h"
+
+namespace DEG {
+
+SequencerBackup::SequencerBackup(const Depsgraph *depsgraph) : depsgraph(depsgraph)
+{
+}
+
+void SequencerBackup::init_from_scene(Scene *scene)
+{
+  Sequence *sequence;
+  SEQ_BEGIN (scene->ed, sequence) {
+    SequenceBackup sequence_backup(depsgraph);
+    sequence_backup.init_from_sequence(sequence);
+    if (!sequence_backup.isEmpty()) {
+      sequences_backup.insert(make_pair(sequence->orig_sequence, sequence_backup));
+    }
+  }
+  SEQ_END;
+}
+
+void SequencerBackup::restore_to_scene(Scene *scene)
+{
+  Sequence *sequence;
+  SEQ_BEGIN (scene->ed, sequence) {
+    SequencesBackupMap::iterator it = sequences_backup.find(sequence->orig_sequence);
+    if (it == sequences_backup.end()) {
+      continue;
+    }
+    SequenceBackup &sequence_backup = it->second;
+    sequence_backup.restore_to_sequence(sequence);
+  }
+  SEQ_END;
+  /* Cleanup audio while the scene is still known. */
+  for (SequencesBackupMap::value_type &it : sequences_backup) {
+    SequenceBackup &sequence_backup = it.second;
+    if (sequence_backup.scene_sound != NULL) {
+      BKE_sound_remove_scene_sound(scene, sequence_backup.scene_sound);
+    }
+  }
+}
+
+}  // namespace DEG