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diff --git a/package/source/zipapi/XUnbufferedStream.hxx b/package/source/zipapi/XUnbufferedStream.hxx
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+++ b/package/source/zipapi/XUnbufferedStream.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 INCLUDED_PACKAGE_SOURCE_ZIPAPI_XUNBUFFEREDSTREAM_HXX
+#define INCLUDED_PACKAGE_SOURCE_ZIPAPI_XUNBUFFEREDSTREAM_HXX
+
+#include <com/sun/star/io/XSeekable.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/xml/crypto/XCipherContext.hpp>
+
+#include <comphelper/refcountedmutex.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <rtl/ref.hxx>
+#include <package/Inflater.hxx>
+#include <ZipEntry.hxx>
+#include <CRC32.hxx>
+
+namespace com::sun::star::uno {
+    class XComponentContext;
+}
+
+#define UNBUFF_STREAM_DATA          0
+#define UNBUFF_STREAM_RAW           1
+#define UNBUFF_STREAM_WRAPPEDRAW    2
+
+class EncryptionData;
+class XUnbufferedStream final : public cppu::WeakImplHelper
+<
+    css::io::XInputStream
+>
+{
+    rtl::Reference<comphelper::RefCountedMutex> maMutexHolder;
+
+    css::uno::Reference < css::io::XInputStream > mxZipStream;
+    css::uno::Reference < css::io::XSeekable > mxZipSeek;
+    css::uno::Sequence < sal_Int8 > maCompBuffer, maHeader;
+    ZipEntry maEntry;
+    sal_Int32 mnBlockSize;
+    css::uno::Reference< css::xml::crypto::XCipherContext > m_xCipherContext;
+    ZipUtils::Inflater maInflater;
+    bool mbRawStream, mbWrappedRaw;
+    sal_Int16 mnHeaderToRead;
+    sal_Int64 mnZipCurrent, mnZipEnd, mnZipSize, mnMyCurrent;
+    CRC32 maCRC;
+    bool mbCheckCRC;
+
+public:
+    XUnbufferedStream(
+                 const css::uno::Reference< css::uno::XComponentContext >& xContext,
+                 const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder,
+                 ZipEntry const & rEntry,
+                 css::uno::Reference < css::io::XInputStream > const & xNewZipStream,
+                 const ::rtl::Reference< EncryptionData >& rData,
+                 sal_Int8 nStreamMode,
+                 bool bIsEncrypted,
+                 const OUString& aMediaType,
+                 bool bRecoveryMode );
+
+    // allows to read package raw stream
+    XUnbufferedStream(
+                 const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder,
+                 const css::uno::Reference < css::io::XInputStream >& xRawStream,
+                 const ::rtl::Reference< EncryptionData >& rData );
+
+    sal_Int64 getSize() const { return mnZipSize; }
+
+    virtual ~XUnbufferedStream() override;
+
+    // XInputStream
+    virtual sal_Int32 SAL_CALL readBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) override;
+    virtual sal_Int32 SAL_CALL readSomeBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) override;
+    virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) override;
+    virtual sal_Int32 SAL_CALL available(  ) override;
+    virtual void SAL_CALL closeInput(  ) override;
+};
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */