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G4RTOutBitStream.hh
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1 //
2 // ********************************************************************
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4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
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18 // * This code implementation is the result of the scientific and *
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25 //
26 //
27 //
28 //
29 
30 // class description:
31 //
32 // This class represents a line of JPEG code. This class must be used exclusively
33 // by G4RTJpegCoder.
34 //
35 
36 #ifndef G4RTOutBitStream_H
37 #define G4RTOutBitStream_H 1
38 #include "G4RTJpeg.hh"
39 
40 static const u_char BitFullMaskT[8] = {0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
41 , 0xff};
42 
44 {
45  public:
46  G4OutBitStream(int size);
48  void SetBits(int v, int numBits);
49  void SetByte(u_char dat);
50  void SetWord(u_int dat);
51  void CopyByte(const char* src, int n);
52 
54  int GetStreamSize(void){return mBuf - mHeadOfBuf;};
55 
56 
57  protected:
61  int mBitPos;
63 
64  void IncBuf(void);
65  void FullBit(void);
66  void Set8Bits(u_char v, int numBits);
67  void SetFewBits(u_char v, int numBits);
68  void SetBits2Byte(u_char v, int numBits);
69 };
70 
71 #endif