4.44 beta

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;
+  }
+}
+
+}}