| [834] | 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4RTOutBitStream.hh,v 1.7 2006/06/29 21:23:23 gunter Exp $
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| [954] | 28 | // GEANT4 tag $Name: $
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| [834] | 29 | //
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| 30 | //
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| 31 |
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| 32 | // class description:
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| 33 | //
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| 34 | // This class represents a line of JPEG code. This class must be used exclusively
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| 35 | // by G4RTJpegCoder.
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| 36 | //
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| 37 |
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| 38 | #ifndef G4RTOutBitStream_H
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| 39 | #define G4RTOutBitStream_H 1
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| 40 | #include "G4RTJpeg.hh"
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| 41 |
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| 42 | static const u_char BitFullMaskT[8] = {0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
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| 43 | , 0xff};
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| 44 |
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| 45 | class G4OutBitStream
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| 46 | {
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| 47 | public:
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| 48 | G4OutBitStream(int size);
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| 49 | void SetBits(int v, int numBits);
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| 50 | void SetByte(u_char dat);
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| 51 | void SetWord(u_int dat);
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| 52 | void CopyByte(const char* src, int n);
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| 53 |
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| 54 | u_char* GetStreamAddress(void){return mHeadOfBuf;};
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| 55 | int GetStreamSize(void){return mBuf - mHeadOfBuf;};
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| 56 |
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| 57 |
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| 58 | protected:
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| 59 | u_char* mHeadOfBuf;
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| 60 | u_char* mBuf;
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| 61 | u_char* mEndOfBuf;
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| 62 | int mBitPos;
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| 63 | int mWriteFlag;
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| 64 |
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| 65 | void IncBuf(void);
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| 66 | void FullBit(void);
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| 67 | void Set8Bits(u_char v, int numBits);
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| 68 | void SetFewBits(u_char v, int numBits);
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| 69 | void SetBits2Byte(u_char v, int numBits);
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| 70 | };
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| 71 |
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| 72 | #endif
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