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-rw-r--r--other-licenses/7zstub/src/7zip/Common/LSBFDecoder.h127
1 files changed, 0 insertions, 127 deletions
diff --git a/other-licenses/7zstub/src/7zip/Common/LSBFDecoder.h b/other-licenses/7zstub/src/7zip/Common/LSBFDecoder.h
deleted file mode 100644
index 6e506859c..000000000
--- a/other-licenses/7zstub/src/7zip/Common/LSBFDecoder.h
+++ /dev/null
@@ -1,127 +0,0 @@
-// LSBFDecoder.h
-
-#ifndef __STREAM_LSBFDECODER_H
-#define __STREAM_LSBFDECODER_H
-
-#include "../IStream.h"
-
-namespace NStream {
-namespace NLSBF {
-
-const int kNumBigValueBits = 8 * 4;
-
-const int kNumValueBytes = 3;
-const int kNumValueBits = 8 * kNumValueBytes;
-
-const UInt32 kMask = (1 << kNumValueBits) - 1;
-
-extern Byte kInvertTable[256];
-// the Least Significant Bit of byte is First
-
-template<class TInByte>
-class CBaseDecoder
-{
-protected:
- int m_BitPos;
- UInt32 m_Value;
- TInByte m_Stream;
-public:
- UInt32 NumExtraBytes;
- 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;
- m_Value = 0;
- NumExtraBytes = 0;
- }
- UInt64 GetProcessedSize() const
- { return m_Stream.GetProcessedSize() - (kNumBigValueBits - m_BitPos) / 8; }
- UInt64 GetProcessedBitsSize() const
- { return (m_Stream.GetProcessedSize() << 3) - (kNumBigValueBits - m_BitPos); }
- int GetBitPosition() const { return (m_BitPos & 7); }
-
- void Normalize()
- {
- for (;m_BitPos >= 8; m_BitPos -= 8)
- {
- Byte b;
- if (!m_Stream.ReadByte(b))
- {
- b = 0xFF; // check it
- NumExtraBytes++;
- }
- m_Value = (b << (kNumBigValueBits - m_BitPos)) | m_Value;
- }
- }
-
- UInt32 ReadBits(int numBits)
- {
- Normalize();
- UInt32 res = m_Value & ((1 << numBits) - 1);
- m_BitPos += numBits;
- m_Value >>= numBits;
- return res;
- }
-
- bool ExtraBitsWereRead() const
- {
- if (NumExtraBytes == 0)
- return false;
- return ((UInt32)(kNumBigValueBits - m_BitPos) < (NumExtraBytes << 3));
- }
-};
-
-template<class TInByte>
-class CDecoder: public CBaseDecoder<TInByte>
-{
- UInt32 m_NormalValue;
-
-public:
- void Init()
- {
- CBaseDecoder<TInByte>::Init();
- m_NormalValue = 0;
- }
-
- void Normalize()
- {
- for (;this->m_BitPos >= 8; this->m_BitPos -= 8)
- {
- Byte b;
- if (!this->m_Stream.ReadByte(b))
- {
- b = 0xFF; // check it
- this->NumExtraBytes++;
- }
- m_NormalValue = (b << (kNumBigValueBits - this->m_BitPos)) | m_NormalValue;
- this->m_Value = (this->m_Value << 8) | kInvertTable[b];
- }
- }
-
- UInt32 GetValue(int numBits)
- {
- Normalize();
- return ((this->m_Value >> (8 - this->m_BitPos)) & kMask) >> (kNumValueBits - numBits);
- }
-
- void MovePos(int numBits)
- {
- this->m_BitPos += numBits;
- m_NormalValue >>= numBits;
- }
-
- UInt32 ReadBits(int numBits)
- {
- Normalize();
- UInt32 res = m_NormalValue & ( (1 << numBits) - 1);
- MovePos(numBits);
- return res;
- }
-};
-
-}}
-
-#endif