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diff --git a/source/blender/alembic/intern/abc_reader_archive.h b/source/blender/alembic/intern/abc_reader_archive.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) 2016 Kévin Dietrich.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup balembic
+ */
+
+#ifndef __ABC_READER_ARCHIVE_H__
+#define __ABC_READER_ARCHIVE_H__
+
+#include <Alembic/Abc/All.h>
+
+#ifdef WITH_ALEMBIC_HDF5
+#  include <Alembic/AbcCoreHDF5/All.h>
+#endif
+
+#include <Alembic/AbcCoreOgawa/All.h>
+
+#include <fstream>
+
+struct Main;
+struct Scene;
+
+/* Wrappers around input and output archives. The goal is to be able to use
+ * streams so that unicode paths work on Windows (T49112), and to make sure that
+ * the stream objects remain valid as long as the archives are open.
+ */
+
+class ArchiveReader {
+  Alembic::Abc::IArchive m_archive;
+  std::ifstream m_infile;
+  std::vector<std::istream *> m_streams;
+  bool m_is_hdf5;
+
+ public:
+  ArchiveReader(struct Main *bmain, const char *filename);
+
+  bool valid() const;
+
+  /**
+   * Returns true when either Blender is compiled with HDF5 support and
+   * the archive was successfully opened (valid() will also return true),
+   * or when Blender was built without HDF5 support but a HDF5 file was
+   * detected (valid() will return false).
+   */
+  bool is_hdf5() const;
+
+  Alembic::Abc::IObject getTop();
+};
+
+#endif /* __ABC_READER_ARCHIVE_H__ */