common/rfb/TightDecoder.h

/* Copyright (C) 2000-2003 Constantin Kaplinsky.  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.
 */
#ifndef __RFB_TIGHTDECODER_H__
#define __RFB_TIGHTDECODER_H__

#include <rdr/ZlibInStream.h>
#include <rfb/Decoder.h>

namespace rfb {

  class TightDecoder : public Decoder {
  public:
    static Decoder* create(CMsgReader* reader);
    virtual void readRect(const Rect& r, CMsgHandler* handler);
    virtual ~TightDecoder();
  private:
    TightDecoder(CMsgReader* reader);
    CMsgReader* reader;
    rdr::ZlibInStream zis[4];
  };

  // Compression control 
  const unsigned int rfbTightExplicitFilter = 0x04;
  const unsigned int rfbTightFill = 0x08;
  const unsigned int rfbTightJpeg = 0x09;
  const unsigned int rfbTightMaxSubencoding = 0x09;

  // Filters to improve compression efficiency
  const unsigned int rfbTightFilterCopy = 0x00;
  const unsigned int rfbTightFilterPalette = 0x01;
  const unsigned int rfbTightFilterGradient = 0x02;
}

#endif