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diff --git a/source/blender/io/alembic/exporter/abc_subdiv_disabler.h b/source/blender/io/alembic/exporter/abc_subdiv_disabler.h
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+/*
+ * 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) 2020 Blender Foundation.
+ * All rights reserved.
+ */
+#pragma once
+
+#include <set>
+
+struct Depsgraph;
+struct ModifierData;
+struct Object;
+struct Scene;
+
+namespace blender {
+namespace io {
+namespace alembic {
+
+/**
+ * Temporarily all subdivision modifiers on mesh objects.
+ * The destructor restores all disabled modifiers.
+ *
+ * This is used to export unsubdivided meshes to Alembic. It is done in a separate step before the
+ * exporter starts iterating over all the frames, so that it only has to happen once per export.
+ */
+class SubdivModifierDisabler final {
+ private:
+  Depsgraph *depsgraph_;
+  std::set<ModifierData *> disabled_modifiers_;
+
+ public:
+  explicit SubdivModifierDisabler(Depsgraph *depsgraph);
+  ~SubdivModifierDisabler();
+
+  void disable_modifiers();
+
+  static ModifierData *get_subdiv_modifier(Scene *scene, Object *ob);
+};
+
+}  // namespace alembic
+}  // namespace io
+}  // namespace blender