diff options
Diffstat (limited to 'CPP/7zip/Common/LSBFEncoder.cpp')
-rwxr-xr-x | CPP/7zip/Common/LSBFEncoder.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/CPP/7zip/Common/LSBFEncoder.cpp b/CPP/7zip/Common/LSBFEncoder.cpp new file mode 100755 index 00000000..6322cae3 --- /dev/null +++ b/CPP/7zip/Common/LSBFEncoder.cpp @@ -0,0 +1,29 @@ +// LSBFEncoder.cpp + +#include "StdAfx.h" + +#include "LSBFEncoder.h" +#include "Common/Defs.h" + +namespace NStream { +namespace NLSBF { + +void CEncoder::WriteBits(UInt32 value, int numBits) +{ + while(numBits > 0) + { + if (numBits < m_BitPos) + { + m_CurByte |= (value & ((1 << numBits) - 1)) << (8 - m_BitPos); + m_BitPos -= numBits; + return; + } + numBits -= m_BitPos; + m_Stream.WriteByte((Byte)(m_CurByte | (value << (8 - m_BitPos)))); + value >>= m_BitPos; + m_BitPos = 8; + m_CurByte = 0; + } +} + +}} |