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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
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#ifndef _GIFLZWC_HXX
#define _GIFLZWC_HXX

#ifndef _BMPACC_HXX
#include <vcl/bmpacc.hxx>
#endif

// --------------------
// - GIFLZWCompressor -
// --------------------

class	GIFImageDataOutputStream;
struct	GIFLZWCTreeNode;

class GIFLZWCompressor
{
private:

	GIFImageDataOutputStream*	pIDOS;
	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( HPBYTE pSrc, sal_uLong nSize );
	void						EndCompression();
};

#endif // _GIFLZWC_HXX