source: 3DVCSoftware/branches/HTM-5.1-dev1-Hisilicon/source/Lib/TLibCommon/TComWeightPrediction.h @ 1075

/* 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) 2010-2012, 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     TComWeightPrediction.h
    \brief    weighting prediction class (header)
*/

#ifndef __TCOMWEIGHTPREDICTION__
#define __TCOMWEIGHTPREDICTION__


// Include files
#include "TComPic.h"
#include "TComMotionInfo.h"
#include "TComPattern.h"
#include "TComTrQuant.h"
#include "TComInterpolationFilter.h"

// ====================================================================================================================
// Class definition
// ====================================================================================================================
/// weighting prediction class
class TComWeightPrediction
{
  wpScalingParam  m_wp0[3], m_wp1[3];
  Int             m_ibdi;

public:
  TComWeightPrediction();

  Void  getWpScaling( TComDataCU* pcCU, Int iRefIdx0, Int iRefIdx1, wpScalingParam *&wp0 , wpScalingParam *&wp1 , Int ibdi=(g_uiBitDepth+g_uiBitIncrement));

  Void  addWeightBi( TComYuv* pcYuvSrc0, TComYuv* pcYuvSrc1, UInt iPartUnitIdx, UInt iWidth, UInt iHeight, wpScalingParam *wp0, wpScalingParam *wp1, TComYuv* rpcYuvDst, Bool bRound=true );
  Void  addWeightUni( TComYuv* pcYuvSrc0, UInt iPartUnitIdx, UInt iWidth, UInt iHeight, wpScalingParam *wp0, TComYuv* rpcYuvDst );

  Void  xWeightedPredictionUni( TComDataCU* pcCU, TComYuv* pcYuvSrc, UInt uiPartAddr, Int iWidth, Int iHeight, RefPicList eRefPicList, TComYuv*& rpcYuvPred, Int iPartIdx, Int iRefIdx=-1 );
  Void  xWeightedPredictionBi( TComDataCU* pcCU, TComYuv* pcYuvSrc0, TComYuv* pcYuvSrc1, Int iRefIdx0, Int iRefIdx1, UInt uiPartIdx, Int iWidth, Int iHeight, TComYuv* rpcYuvDst );

  __inline  Pel   xClip  ( Int x );
  __inline  Pel   weightBidir( Int w0, Pel P0, Int w1, Pel P1, Int round, Int shift, Int offset);
  __inline  Pel   weightUnidir( Int w0, Pel P0, Int round, Int shift, Int offset);

};

inline  Pel TComWeightPrediction::xClip( Int x )
{ 
  Int max = (Int)g_uiIBDI_MAX;
  Pel pel = (Pel)( (x < 0) ? 0 : (x > max) ? max : x );
  return( pel );
}

inline  Pel TComWeightPrediction::weightBidir( Int w0, Pel P0, Int w1, Pel P1, Int round, Int shift, Int offset)
{
  return xClip( ( (w0*(P0 + IF_INTERNAL_OFFS) + w1*(P1 + IF_INTERNAL_OFFS) + round + (offset << (shift-1))) >> shift ) );
}
inline  Pel TComWeightPrediction::weightUnidir( Int w0, Pel P0, Int round, Int shift, Int offset) 
{
  return xClip( ( (w0*(P0 + IF_INTERNAL_OFFS) + round) >> shift ) + offset );
}

#endif