The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/other-licenses/7zstub/src/7zip/Common/MSBFEncoder.h	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,59 @@
     1.4 +// Stream/MSBFEncoder.h
     1.5 +
     1.6 +#ifndef __STREAM_MSBFENCODER_H
     1.7 +#define __STREAM_MSBFENCODER_H
     1.8 +
     1.9 +#include "Common/Defs.h"
    1.10 +#include "../IStream.h"
    1.11 +#include "OutBuffer.h"
    1.12 +
    1.13 +namespace NStream {
    1.14 +namespace NMSBF {
    1.15 +
    1.16 +template<class TOutByte>
    1.17 +class CEncoder
    1.18 +{
    1.19 +  TOutByte m_Stream;
    1.20 +  int m_BitPos;
    1.21 +  Byte m_CurByte;
    1.22 +public:
    1.23 +  bool Create(UInt32 bufferSize) { return m_Stream.Create(bufferSize); }
    1.24 +  void SetStream(ISequentialOutStream *outStream) { m_Stream.SetStream(outStream);}
    1.25 +  void ReleaseStream() { m_Stream.ReleaseStream(); }
    1.26 +  void Init()
    1.27 +  {
    1.28 +    m_Stream.Init();
    1.29 +    m_BitPos = 8; 
    1.30 +    m_CurByte = 0;
    1.31 +  }
    1.32 +  HRESULT Flush()
    1.33 +  {
    1.34 +    if(m_BitPos < 8)
    1.35 +      WriteBits(0, m_BitPos);
    1.36 +    return m_Stream.Flush();
    1.37 +  }
    1.38 +
    1.39 +  void WriteBits(UInt32 value, int numBits)
    1.40 +  {
    1.41 +    while(numBits > 0)
    1.42 +    {
    1.43 +      if (numBits < m_BitPos)
    1.44 +      {
    1.45 +        m_CurByte |= ((Byte)value << (m_BitPos -= numBits));
    1.46 +        return;
    1.47 +      }
    1.48 +      numBits -= m_BitPos;
    1.49 +      UInt32 newBits = (value >> numBits);
    1.50 +      value -= (newBits << numBits);
    1.51 +      m_Stream.WriteByte(m_CurByte | (Byte)newBits);
    1.52 +      m_BitPos = 8;
    1.53 +      m_CurByte = 0;
    1.54 +    }
    1.55 +  }
    1.56 +  UInt64 GetProcessedSize() const { 
    1.57 +      return m_Stream.GetProcessedSize() + (8 - m_BitPos + 7) / 8; }
    1.58 +};
    1.59 +
    1.60 +}}
    1.61 +
    1.62 +#endif