--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jctvc/TLibCommon/ContextModel.h	Wed Nov 16 11:16:33 2016 +0200
@@ -0,0 +1,108 @@
+/* The copyright in this software is being made available under the BSD
+ * License, included below. This software may be subject to other third party
+ * and contributor rights, including patent rights, and no such rights are
+ * granted under this license.
+ *
+ * Copyright (c) 2010-2014, ITU/ISO/IEC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/** \file     ContextModel.h
+    \brief    context model class (header)
+*/
+
+#ifndef __CONTEXTMODEL__
+#define __CONTEXTMODEL__
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include "CommonDef.h"
+#include "TComRom.h"
+
+//! \ingroup TLibCommon
+//! \{
+
+// ====================================================================================================================
+// Class definition
+// ====================================================================================================================
+
+/// context model class
+class ContextModel
+{
+public:
+  ContextModel  ()                        { m_ucState = 0; m_binsCoded = 0; }
+  ~ContextModel ()                        {}
+
+  UChar getState  ()                { return ( m_ucState >> 1 ); }                    ///< get current state
+  UChar getMps    ()                { return ( m_ucState  & 1 ); }                    ///< get curret MPS
+  Void  setStateAndMps( UChar ucState, UChar ucMPS) { m_ucState = (ucState << 1) + ucMPS; } ///< set state and MPS
+
+  Void init ( Int qp, Int initValue );   ///< initialize state with initial probability
+
+  Void updateLPS ()
+  {
+    m_ucState = m_aucNextStateLPS[ m_ucState ];
+  }
+
+  Void updateMPS ()
+  {
+    m_ucState = m_aucNextStateMPS[ m_ucState ];
+  }
+
+  Int getEntropyBits(Short val) { return m_entropyBits[m_ucState ^ val]; }
+
+#if FAST_BIT_EST
+  Void update( Int binVal )
+  {
+    m_ucState = m_nextState[m_ucState][binVal];
+  }
+  static Void buildNextStateTable();
+  static Int getEntropyBitsTrm( Int val ) { return m_entropyBits[126 ^ val]; }
+#endif
+  Void setBinsCoded(UInt val)   { m_binsCoded = val;  }
+  UInt getBinsCoded()           { return m_binsCoded;   }
+
+private:
+  UChar         m_ucState;                                                                  ///< internal state variable
+
+  static const  UInt  m_totalStates = (1 << CONTEXT_STATE_BITS) * 2; //*2 for MPS = [0|1]
+  static const  UChar m_aucNextStateMPS[m_totalStates];
+  static const  UChar m_aucNextStateLPS[m_totalStates];
+  static const  Int   m_entropyBits    [m_totalStates];
+#if FAST_BIT_EST
+  static UChar m_nextState[m_totalStates][2 /*MPS = [0|1]*/];
+#endif
+  UInt          m_binsCoded;
+};
+
+//! \}
+
+#endif
+