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/* Copyright (C) 2002-2004 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// ZlibOutStream streams to a compressed data stream (underlying), compressing
// with zlib on the fly.
//
#ifndef __RDR_ZLIBOUTSTREAM_H__
#define __RDR_ZLIBOUTSTREAM_H__
#include <rdr/OutStream.h>
struct z_stream_s;
namespace rdr {
class ZlibOutStream : public OutStream {
public:
ZlibOutStream(OutStream* os=0, int bufSize=0, int compressionLevel=-1);
virtual ~ZlibOutStream();
void setUnderlying(OutStream* os);
void flush();
int length();
private:
int overrun(int itemSize, int nItems);
OutStream* underlying;
int bufSize;
int offset;
z_stream_s* zs;
U8* start;
};
} // end of namespace rdr
#endif
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