libbpg-0.9.3

jctvc/TLibCommon/TComMv.h

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+/* 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     TComMv.h
+    \brief    motion vector class (header)
+*/
+
+#ifndef __TCOMMV__
+#define __TCOMMV__
+
+#include "CommonDef.h"
+#include <cstdlib>
+
+//! \ingroup TLibCommon
+//! \{
+
+// ====================================================================================================================
+// Class definition
+// ====================================================================================================================
+
+/// basic motion vector class
+class TComMv
+{
+private:
+  Short m_iHor;     ///< horizontal component of motion vector
+  Short m_iVer;     ///< vertical component of motion vector
+
+public:
+
+  // ------------------------------------------------------------------------------------------------------------------
+  // constructors
+  // ------------------------------------------------------------------------------------------------------------------
+
+  TComMv() :
+  m_iHor(0),
+  m_iVer(0)
+  {
+  }
+
+  TComMv( Short iHor, Short iVer ) :
+  m_iHor(iHor),
+  m_iVer(iVer)
+  {
+  }
+
+  // ------------------------------------------------------------------------------------------------------------------
+  // set
+  // ------------------------------------------------------------------------------------------------------------------
+
+  Void  set       ( Short iHor, Short iVer)     { m_iHor = iHor;  m_iVer = iVer;            }
+  Void  setHor    ( Short i )                   { m_iHor = i;                               }
+  Void  setVer    ( Short i )                   { m_iVer = i;                               }
+  Void  setZero   ()                            { m_iHor = m_iVer = 0;  }
+
+  // ------------------------------------------------------------------------------------------------------------------
+  // get
+  // ------------------------------------------------------------------------------------------------------------------
+
+  Int   getHor    () const { return m_iHor;          }
+  Int   getVer    () const { return m_iVer;          }
+  Int   getAbsHor () const { return abs( m_iHor );   }
+  Int   getAbsVer () const { return abs( m_iVer );   }
+
+  // ------------------------------------------------------------------------------------------------------------------
+  // operations
+  // ------------------------------------------------------------------------------------------------------------------
+
+  const TComMv& operator += (const TComMv& rcMv)
+  {
+    m_iHor += rcMv.m_iHor;
+    m_iVer += rcMv.m_iVer;
+    return  *this;
+  }
+
+  const TComMv& operator-= (const TComMv& rcMv)
+  {
+    m_iHor -= rcMv.m_iHor;
+    m_iVer -= rcMv.m_iVer;
+    return  *this;
+  }
+
+  const TComMv& operator>>= (const Int i)
+  {
+    m_iHor >>= i;
+    m_iVer >>= i;
+    return  *this;
+  }
+
+  const TComMv& operator<<= (const Int i)
+  {
+    m_iHor <<= i;
+    m_iVer <<= i;
+    return  *this;
+  }
+
+  const TComMv operator - ( const TComMv& rcMv ) const
+  {
+    return TComMv( m_iHor - rcMv.m_iHor, m_iVer - rcMv.m_iVer );
+  }
+
+  const TComMv operator + ( const TComMv& rcMv ) const
+  {
+    return TComMv( m_iHor + rcMv.m_iHor, m_iVer + rcMv.m_iVer );
+  }
+
+  Bool operator== ( const TComMv& rcMv ) const
+  {
+    return (m_iHor==rcMv.m_iHor && m_iVer==rcMv.m_iVer);
+  }
+
+  Bool operator!= ( const TComMv& rcMv ) const
+  {
+    return (m_iHor!=rcMv.m_iHor || m_iVer!=rcMv.m_iVer);
+  }
+
+  const TComMv scaleMv( Int iScale ) const
+  {
+    Int mvx = Clip3( -32768, 32767, (iScale * getHor() + 127 + (iScale * getHor() < 0)) >> 8 );
+    Int mvy = Clip3( -32768, 32767, (iScale * getVer() + 127 + (iScale * getVer() < 0)) >> 8 );
+    return TComMv( mvx, mvy );
+  }
+};// END CLASS DEFINITION TComMV
+
+//! \}
+
+#endif // __TCOMMV__