diff options
Diffstat (limited to 'src/libs/7zip/unix/CPP/7zip/Compress/BitmDecoder.h')
-rw-r--r-- | src/libs/7zip/unix/CPP/7zip/Compress/BitmDecoder.h | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Compress/BitmDecoder.h b/src/libs/7zip/unix/CPP/7zip/Compress/BitmDecoder.h deleted file mode 100644 index 4369b4524..000000000 --- a/src/libs/7zip/unix/CPP/7zip/Compress/BitmDecoder.h +++ /dev/null @@ -1,66 +0,0 @@ -// BitmDecoder.h -- the Most Significant Bit of byte is First - -#ifndef __BITM_DECODER_H -#define __BITM_DECODER_H - -#include "../IStream.h" - -namespace NBitm { - -const unsigned kNumBigValueBits = 8 * 4; -const unsigned kNumValueBytes = 3; -const unsigned kNumValueBits = 8 * kNumValueBytes; - -const UInt32 kMask = (1 << kNumValueBits) - 1; - -template<class TInByte> -class CDecoder -{ - unsigned m_BitPos; - UInt32 m_Value; -public: - TInByte m_Stream; - bool Create(UInt32 bufferSize) { return m_Stream.Create(bufferSize); } - void SetStream(ISequentialInStream *inStream) { m_Stream.SetStream(inStream);} - void ReleaseStream() { m_Stream.ReleaseStream();} - - void Init() - { - m_Stream.Init(); - m_BitPos = kNumBigValueBits; - Normalize(); - } - - UInt64 GetProcessedSize() const { return m_Stream.GetProcessedSize() - (kNumBigValueBits - m_BitPos) / 8; } - - void Normalize() - { - for (;m_BitPos >= 8; m_BitPos -= 8) - m_Value = (m_Value << 8) | m_Stream.ReadByte(); - } - - UInt32 GetValue(unsigned numBits) const - { - // return (m_Value << m_BitPos) >> (kNumBigValueBits - numBits); - return ((m_Value >> (8 - m_BitPos)) & kMask) >> (kNumValueBits - numBits); - } - - void MovePos(unsigned numBits) - { - m_BitPos += numBits; - Normalize(); - } - - UInt32 ReadBits(unsigned numBits) - { - UInt32 res = GetValue(numBits); - MovePos(numBits); - return res; - } - - void AlignToByte() { MovePos((32 - m_BitPos) & 7); } -}; - -} - -#endif |