1 files changed, 113 insertions, 0 deletions
diff --git a/goodies/source/filter.vcl/itiff/lzwdecom.hxx b/goodies/source/filter.vcl/itiff/lzwdecom.hxx
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@@ -0,0 +1,113 @@
+/*************************************************************************
+ *
+ *  $RCSfile: lzwdecom.hxx,v $
+ *
+ *  $Revision: 1.1.1.1 $
+ *
+ *  last change: $Author: hr $ $Date: 2000-09-18 16:30:16 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (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.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#ifndef _LZWDECOM_HXX
+#define _LZWDECOM_HXX
+
+#include <tools/stream.hxx>
+
+struct LZWTableEntry {
+    USHORT nPrevCode;
+    USHORT nDataCount;
+    BYTE nData;
+};
+
+class LZWDecompressor {
+
+public:
+
+    LZWDecompressor();
+    ~LZWDecompressor();
+
+    void StartDecompression(SvStream & rIStream);
+
+    ULONG Decompress(BYTE * pTarget, ULONG nMaxCount);
+        // Liefert die Anzahl der geschriebenen Bytes, wenn < nMaxCount,
+        // sind keine weiteren Daten zu entpacken, oder es ist ein
+        // Fehler aufgetreten.
+
+private:
+
+    USHORT GetNextCode();
+    void AddToTable(USHORT nPrevCode, USHORT nCodeFirstData);
+    void DecompressSome();
+
+    SvStream * pIStream;
+
+    LZWTableEntry * pTable;
+    USHORT nTableSize;
+
+    BOOL bEOIFound, bInvert, bFirst;
+
+    USHORT nOldCode;
+
+    BYTE * pOutBuf;
+    BYTE * pOutBufData;
+    USHORT nOutBufDataLen;
+
+    BYTE nInputBitsBuf;
+    USHORT nInputBitsBufSize;
+};
+
+
+#endif
+
+