00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 // 00030 00031 // class description: 00032 // 00033 // This class represents a line of JPEG code. This class must be used exclusively 00034 // by G4RTJpegCoder. 00035 // 00036 00037 #ifndef G4RTOutBitStream_H 00038 #define G4RTOutBitStream_H 1 00039 #include "G4RTJpeg.hh" 00040 00041 static const u_char BitFullMaskT[8] = {0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f 00042 , 0xff}; 00043 00044 class G4OutBitStream 00045 { 00046 public: 00047 G4OutBitStream(int size); 00048 ~G4OutBitStream(); 00049 void SetBits(int v, int numBits); 00050 void SetByte(u_char dat); 00051 void SetWord(u_int dat); 00052 void CopyByte(const char* src, int n); 00053 00054 u_char* GetStreamAddress(void){return mHeadOfBuf;}; 00055 int GetStreamSize(void){return mBuf - mHeadOfBuf;}; 00056 00057 00058 protected: 00059 u_char* mHeadOfBuf; 00060 u_char* mBuf; 00061 u_char* mEndOfBuf; 00062 int mBitPos; 00063 int mWriteFlag; 00064 00065 void IncBuf(void); 00066 void FullBit(void); 00067 void Set8Bits(u_char v, int numBits); 00068 void SetFewBits(u_char v, int numBits); 00069 void SetBits2Byte(u_char v, int numBits); 00070 }; 00071 00072 #endif