4.44 beta

1 files changed, 27 insertions, 0 deletions

diff --git a/CPP/7zip/Common/LSBFDecoder.cpp b/CPP/7zip/Common/LSBFDecoder.cpp
new file mode 100755
index 00000000..76dd090f
--- /dev/null
+++ b/CPP/7zip/Common/LSBFDecoder.cpp
@@ -0,0 +1,27 @@
+// Stream/LSBFDecoder.cpp
+
+#include "StdAfx.h"
+
+#include "LSBFDecoder.h"
+
+namespace NStream {
+namespace NLSBF {
+
+Byte kInvertTable[256];
+
+class CInverterTableInitializer
+{
+public:
+  CInverterTableInitializer()
+  {
+    for (int i = 0; i < 256; i++)
+    {
+      int x = ((i & 0x55) << 1) | ((i & 0xAA) >> 1);
+      x = ((x & 0x33) << 2) | ((x & 0xCC) >> 2);
+      kInvertTable[i] = (Byte)(((x & 0x0F) << 4) | ((x & 0xF0) >> 4));
+    }
+  }
+} g_InverterTableInitializer;
+
+
+}}