1 files changed, 73 insertions, 0 deletions
diff --git a/hostTools/lzma/compress/LenCoder.cpp b/hostTools/lzma/compress/LenCoder.cpp
new file mode 100644
index 0000000..35162b2
--- /dev/null
+++ b/hostTools/lzma/compress/LenCoder.cpp
@@ -0,0 +1,73 @@
+#include "LenCoder.h"
+
+using namespace NCompression;
+using namespace NArithmetic;
+
+namespace NLength {
+
+void CEncoder::Init()
+{
+  m_Choice.Init();
+  for (UINT32 aPosState = 0; aPosState < m_NumPosStates; aPosState++)
+  {
+    m_LowCoder[aPosState].Init();
+    m_MidCoder[aPosState].Init();
+  }
+  m_Choice2.Init();
+  m_HighCoder.Init();
+}
+
+void CEncoder::Encode(CMyRangeEncoder *aRangeEncoder, UINT32 aSymbol, UINT32 aPosState)
+{
+  if(aSymbol < kNumLowSymbols)
+  {
+    m_Choice.Encode(aRangeEncoder, 0);
+    m_LowCoder[aPosState].Encode(aRangeEncoder, aSymbol);
+  }
+  else
+  {
+    aSymbol -= kNumLowSymbols;
+    m_Choice.Encode(aRangeEncoder, 1);
+    if(aSymbol < kNumMidSymbols)
+    {
+      m_Choice2.Encode(aRangeEncoder, 0);
+      m_MidCoder[aPosState].Encode(aRangeEncoder, aSymbol);
+    }
+    else
+    {
+      aSymbol -= kNumMidSymbols;
+      m_Choice2.Encode(aRangeEncoder, 1);
+      m_HighCoder.Encode(aRangeEncoder, aSymbol);
+    }
+  }
+}
+
+UINT32 CEncoder::GetPrice(UINT32 aSymbol, UINT32 aPosState) const
+{
+  UINT32 aPrice = 0;
+  if(aSymbol < kNumLowSymbols)
+  {
+    aPrice += m_Choice.GetPrice(0);
+    aPrice += m_LowCoder[aPosState].GetPrice(aSymbol);
+  }
+  else
+  {
+    aSymbol -= kNumLowSymbols;
+    aPrice += m_Choice.GetPrice(1);
+    if(aSymbol < kNumMidSymbols)
+    {
+      aPrice += m_Choice2.GetPrice(0);
+      aPrice += m_MidCoder[aPosState].GetPrice(aSymbol);
+    }
+    else
+    {
+      aSymbol -= kNumMidSymbols;
+      aPrice += m_Choice2.GetPrice(1);
+      aPrice += m_HighCoder.GetPrice(aSymbol);
+    }
+  }
+  return aPrice;
+}
+
+}
+