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diff --git a/include/svl/instrm.hxx b/include/svl/instrm.hxx
new file mode 100644
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+++ b/include/svl/instrm.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef SVTOOLS_INSTRM_HXX
+#define SVTOOLS_INSTRM_HXX
+
+#include "svl/svldllapi.h"
+#include <com/sun/star/uno/Reference.h>
+#include <tools/stream.hxx>
+
+namespace com { namespace sun { namespace star { namespace io {
+    class XInputStream;
+    class XSeekable;
+} } } }
+
+class SvDataPipe_Impl;
+
+//============================================================================
+class SVL_DLLPUBLIC SvInputStream: public SvStream
+{
+    com::sun::star::uno::Reference< com::sun::star::io::XInputStream >
+        m_xStream;
+    com::sun::star::uno::Reference< com::sun::star::io::XSeekable >
+        m_xSeekable;
+    SvDataPipe_Impl * m_pPipe;
+    sal_uLong m_nSeekedFrom;
+
+    SVL_DLLPRIVATE bool open();
+
+    SVL_DLLPRIVATE virtual sal_uLong GetData(void * pData, sal_uLong nSize);
+
+    SVL_DLLPRIVATE virtual sal_uLong PutData(void const *, sal_uLong);
+
+    SVL_DLLPRIVATE virtual sal_uLong SeekPos(sal_uLong nPos);
+
+    SVL_DLLPRIVATE virtual void FlushData();
+
+    SVL_DLLPRIVATE virtual void SetSize(sal_uLong);
+
+public:
+    SvInputStream(
+        com::sun::star::uno::Reference< com::sun::star::io::XInputStream >
+                const &
+            rTheStream);
+
+    virtual ~SvInputStream();
+
+    virtual sal_uInt16 IsA() const;
+
+    virtual void AddMark(sal_uLong nPos);
+
+    virtual void RemoveMark(sal_uLong nPos);
+};
+
+#endif // SVTOOLS_INSTRM_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */