1 files changed, 55 insertions, 0 deletions
diff --git a/vcl/source/filter/egif/giflzwc.hxx b/vcl/source/filter/egif/giflzwc.hxx
new file mode 100644
index 000000000..057710c85
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+++ b/vcl/source/filter/egif/giflzwc.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_FILTER_SOURCE_GRAPHICFILTER_EGIF_GIFLZWC_HXX
+#define INCLUDED_FILTER_SOURCE_GRAPHICFILTER_EGIF_GIFLZWC_HXX
+
+#include <vcl/mapmod.hxx>
+
+
+class   GIFImageDataOutputStream;
+struct  GIFLZWCTreeNode;
+
+
+class GIFLZWCompressor
+{
+private:
+
+    std::unique_ptr<GIFImageDataOutputStream> pIDOS;
+    std::unique_ptr<GIFLZWCTreeNode[]> pTable;
+    GIFLZWCTreeNode*            pPrefix;
+    sal_uInt16                  nDataSize;
+    sal_uInt16                  nClearCode;
+    sal_uInt16                  nEOICode;
+    sal_uInt16                  nTableSize;
+    sal_uInt16                  nCodeSize;
+
+public:
+
+                                GIFLZWCompressor();
+                                ~GIFLZWCompressor();
+
+    void                        StartCompression( SvStream& rGIF, sal_uInt16 nPixelSize );
+    void                        Compress(sal_uInt8* pSrc, sal_uInt32 nSize);
+    void                        EndCompression();
+};
+
+#endif // INCLUDED_FILTER_SOURCE_GRAPHICFILTER_EGIF_GIFLZWC_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */