//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
// *   http://cern.ch/geant4/license                                  *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.                                                             *
// *                                                                  *
// * This  code  implementation is the  intellectual property  of the *
// * GEANT4 collaboration.                                            *
// * By copying,  distributing  or modifying the Program (or any work *
// * based  on  the Program)  you indicate  your  acceptance of  this *
// * statement, and all its terms.                                    *
// ********************************************************************
//
//
// $Id: G4RTOutBitStream.hh,v 1.6 2001/07/11 10:09:02 gunter Exp $
// GEANT4 tag $Name: geant4-04-01 $
//
//

// class description:
//
//  This class represents a line of JPEG code. This class must be used exclusively
// by G4RTJpegCoder.
//

#ifndef G4RTOutBitStream_H
#define G4RTOutBitStream_H 1
#include "G4RTJpeg.hh"

static const u_char BitFullMaskT[8] = {0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
, 0xff};

class G4OutBitStream
{
  public:
    G4OutBitStream(int size);
        void SetBits(int v, int numBits);
        void SetByte(u_char dat);
        void SetWord(u_int dat);
        void CopyByte(const char* src, int n);

        u_char* GetStreamAddress(void){return mHeadOfBuf;};
        int GetStreamSize(void){return mBuf - mHeadOfBuf;};


  protected:
        u_char* mHeadOfBuf;
        u_char* mBuf;
        u_char* mEndOfBuf;
        int mBitPos;
        int mWriteFlag;

        void IncBuf(void);
        void FullBit(void);
        void Set8Bits(u_char v, int numBits);
        void SetFewBits(u_char v, int numBits);
        void SetBits2Byte(u_char v, int numBits);
};

#endif