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60 lines
1.4 KiB
60 lines
1.4 KiB
//
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// Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This software is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this software; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// ZlibInStream streams from a compressed data stream ("underlying"),
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// decompressing with zlib on the fly.
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//
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#ifndef __RDR_ZLIBINSTREAM_H__
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#define __RDR_ZLIBINSTREAM_H__
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#include <rdr/InStream.h>
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struct z_stream_s;
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namespace rdr {
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class ZlibInStream : public InStream {
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public:
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ZlibInStream(int bufSize=0);
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virtual ~ZlibInStream();
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void setUnderlying(InStream* is, int bytesIn);
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void reset();
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int pos();
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private:
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int overrun(int itemSize, int nItems);
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void decompress();
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InStream* underlying;
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int bufSize;
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int offset;
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z_stream_s* zs;
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int bytesIn;
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U8* start;
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};
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} // end of namespace rdr
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#endif
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