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diff --git a/source/blender/alembic/intern/abc_exporter.h b/source/blender/alembic/intern/abc_exporter.h
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+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * Contributor(s): Esteban Tovagliari, Cedric Paille, Kevin Dietrich
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __ABC_EXPORTER_H__
+#define __ABC_EXPORTER_H__
+
+#include <Alembic/Abc/All.h>
+#include <map>
+#include <set>
+#include <vector>
+
+class AbcObjectWriter;
+class AbcTransformWriter;
+
+struct EvaluationContext;
+struct Main;
+struct Object;
+struct Scene;
+
+struct ExportSettings {
+	ExportSettings();
+
+	Scene *scene;
+
+	bool selected_only;
+	bool visible_layers_only;
+	bool renderable_only;
+
+	double frame_start, frame_end;
+	double frame_step_xform;
+	double frame_step_shape;
+	double shutter_open;
+	double shutter_close;
+	float global_scale;
+
+	bool flatten_hierarchy;
+
+	bool export_normals;
+	bool export_uvs;
+	bool export_vcols;
+	bool export_face_sets;
+	bool export_vweigths;
+
+	bool apply_subdiv;
+	bool use_subdiv_schema;
+	bool export_child_hairs;
+	bool export_ogawa;
+	bool pack_uv;
+
+	bool do_convert_axis;
+	float convert_matrix[3][3];
+};
+
+class AbcExporter {
+	ExportSettings &m_settings;
+
+	const char *m_filename;
+
+	Alembic::Abc::OArchive m_archive;
+	unsigned int m_trans_sampling_index, m_shape_sampling_index;
+
+	Scene *m_scene;
+
+	std::map<std::string, AbcTransformWriter *> m_xforms;
+	std::vector<AbcObjectWriter *> m_shapes;
+
+public:
+	AbcExporter(Scene *scene, const char *filename, ExportSettings &settings);
+	~AbcExporter();
+
+	void operator()(Main *bmain, float &progress, bool &was_canceled);
+
+private:
+	void getShutterSamples(double step, bool time_relative, std::vector<double> &samples);
+
+	Alembic::Abc::TimeSamplingPtr createTimeSampling(double step);
+
+	void getFrameSet(double step, std::set<double> &frames);
+
+	void createTransformWritersHierarchy(EvaluationContext *eval_ctx);
+	void createTransformWritersFlat();
+	void createTransformWriter(Object *ob,  Object *parent, Object *dupliObParent);
+	void exploreTransform(EvaluationContext *eval_ctx, Object *ob, Object *parent, Object *dupliObParent = NULL);
+	void exploreObject(EvaluationContext *eval_ctx, Object *ob, Object *dupliObParent);
+	void createShapeWriters(EvaluationContext *eval_ctx);
+	void createShapeWriter(Object *ob, Object *dupliObParent);
+
+	AbcTransformWriter *getXForm(const std::string &name);
+
+	void setCurrentFrame(Main *bmain, double t);
+};
+
+#endif  /* __ABC_EXPORTER_H__ */