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45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
// Copyright (c) 2005-2009 Jay Berkenbilt
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//
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// This file is part of qpdf. This software may be distributed under
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// the terms of version 2 of the Artistic License which may be found
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// in the source distribution. It is provided "as is" without express
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// or implied warranty.
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#ifndef __PL_FLATE_HH__
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#define __PL_FLATE_HH__
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#include <qpdf/Pipeline.hh>
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#include <zlib.h>
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class Pl_Flate: public Pipeline
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{
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public:
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static int const def_bufsize = 65536;
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enum action_e { a_inflate, a_deflate };
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DLL_EXPORT
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Pl_Flate(char const* identifier, Pipeline* next,
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action_e action, int out_bufsize = def_bufsize);
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DLL_EXPORT
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virtual ~Pl_Flate();
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DLL_EXPORT
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virtual void write(unsigned char* data, int len);
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DLL_EXPORT
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virtual void finish();
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private:
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void handleData(unsigned char* data, int len, int flush);
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void checkError(char const* prefix, int error_code);
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unsigned char* outbuf;
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int out_bufsize;
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action_e action;
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bool initialized;
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z_stream zstream;
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};
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#endif // __PL_FLATE_HH__
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