/* 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) 2010-2011, 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     TComRdCost.h
    \brief    RD cost computation classes (header)
*/

#ifndef __TCOMRDCOST__
#define __TCOMRDCOST__


#include "CommonDef.h"
#include "TComPattern.h"
#include "TComMv.h"

#if WEIGHT_PRED
  #include "TComSlice.h"
  #include "TComRdCostWeightPrediction.h"
#endif

//! \ingroup TLibCommon
//! \{

#define FIX203 1

class DistParam;
class TComPattern;

// ====================================================================================================================
// Type definition
// ====================================================================================================================

// for function pointer
typedef UInt (*FpDistFunc) (DistParam*);

// ====================================================================================================================
// Class definition
// ====================================================================================================================

/// distortion parameter class
class DistParam
{
public:
  Pel*  pOrg;
  Pel*  pCur;
  Int   iStrideOrg;
  Int   iStrideCur;
  Int   iRows;
  Int   iCols;
  Int   iStep;
  FpDistFunc DistFunc;

#if WEIGHT_PRED
  Bool            bApplyWeight;     // whether weithed prediction is used or not
  wpScalingParam  *wpCur;           // weithed prediction scaling parameters for current ref
  UInt            uiComp;           // uiComp = 0 (luma Y), 1 (chroma U), 2 (chroma V)
#endif

#if NS_HAD
  Bool            bUseNSHAD;
#endif

  // (vertical) subsampling shift (for reducing complexity)
  // - 0 = no subsampling, 1 = even rows, 2 = every 4th, etc.
  Int   iSubShift;
  
  DistParam()
  {
    pOrg = NULL;
    pCur = NULL;
    iStrideOrg = 0;
    iStrideCur = 0;
    iRows = 0;
    iCols = 0;
    iStep = 1;
    DistFunc = NULL;
    iSubShift = 0;
#if NS_HAD
    bUseNSHAD = false;
#endif
  }
};

/// RD cost computation class
class TComRdCost
#if WEIGHT_PRED
  : public TComRdCostWeightPrediction
#endif
{
private:
  // for distortion
  Int                     m_iBlkWidth;
  Int                     m_iBlkHeight;
  
#if AMP_SAD
  FpDistFunc              m_afpDistortFunc[64]; // [eDFunc]
#else  
  FpDistFunc              m_afpDistortFunc[33]; // [eDFunc]
#endif  
  
#if WEIGHTED_CHROMA_DISTORTION
  Double                  m_chromaDistortionWeight;   
#endif
  Double                  m_dLambda;
  Double                  m_sqrtLambda;
  UInt                    m_uiLambdaMotionSAD;
  UInt                    m_uiLambdaMotionSSE;
  Double                  m_dFrameLambda;
  
  // for motion cost
#if FIX203
  TComMv                  m_mvPredictor;
#else
  UInt*                   m_puiComponentCostOriginP;
  UInt*                   m_puiComponentCost;
  UInt*                   m_puiVerCost;
  UInt*                   m_puiHorCost;
#endif
  UInt                    m_uiCost;
  Int                     m_iCostScale;
#if !FIX203
  Int                     m_iSearchLimit;
#endif
  
public:
  TComRdCost();
  virtual ~TComRdCost();
  
  Double  calcRdCost  ( UInt   uiBits, UInt   uiDistortion, Bool bFlag = false, DFunc eDFunc = DF_DEFAULT );
  Double  calcRdCost64( UInt64 uiBits, UInt64 uiDistortion, Bool bFlag = false, DFunc eDFunc = DF_DEFAULT );
  
#if WEIGHTED_CHROMA_DISTORTION
  Void    setChromaDistortionWeight      ( Double chromaDistortionWeight) { m_chromaDistortionWeight = chromaDistortionWeight; };
#endif
  Void    setLambda      ( Double dLambda );
  Void    setFrameLambda ( Double dLambda ) { m_dFrameLambda = dLambda; }
  
  Double  getSqrtLambda ()   { return m_sqrtLambda; }
  
  // Distortion Functions
  Void    init();
  
  Void    setDistParam( UInt uiBlkWidth, UInt uiBlkHeight, DFunc eDFunc, DistParam& rcDistParam );
  Void    setDistParam( TComPattern* pcPatternKey, Pel* piRefY, Int iRefStride,            DistParam& rcDistParam );
#if NS_HAD
  Void    setDistParam( TComPattern* pcPatternKey, Pel* piRefY, Int iRefStride, Int iStep, DistParam& rcDistParam, Bool bHADME=false, Bool bUseNSHAD=false );
  Void    setDistParam( DistParam& rcDP, Pel* p1, Int iStride1, Pel* p2, Int iStride2, Int iWidth, Int iHeight, Bool bHadamard = false, Bool bUseNSHAD=false );
#else
  Void    setDistParam( TComPattern* pcPatternKey, Pel* piRefY, Int iRefStride, Int iStep, DistParam& rcDistParam, Bool bHADME=false );
  Void    setDistParam( DistParam& rcDP, Pel* p1, Int iStride1, Pel* p2, Int iStride2, Int iWidth, Int iHeight, Bool bHadamard = false );
#endif
  
  UInt    calcHAD         ( Pel* pi0, Int iStride0, Pel* pi1, Int iStride1, Int iWidth, Int iHeight );
  
  // for motion cost
#if !FIX203
  Void    initRateDistortionModel( Int iSubPelSearchLimit );
  Void    xUninit();
#endif
  UInt    xGetComponentBits( Int iVal );
  Void    getMotionCost( Bool bSad, Int iAdd ) { m_uiCost = (bSad ? m_uiLambdaMotionSAD + iAdd : m_uiLambdaMotionSSE + iAdd); }
  Void    setPredictor( TComMv& rcMv )
  {
#if FIX203
    m_mvPredictor = rcMv;
#else
    m_puiHorCost = m_puiComponentCost - rcMv.getHor();
    m_puiVerCost = m_puiComponentCost - rcMv.getVer();
#endif
  }
  Void    setCostScale( Int iCostScale )    { m_iCostScale = iCostScale; }
  __inline UInt getCost( Int x, Int y )
  {
#if FIX203
    return m_uiCost * getBits(x, y) >> 16;
#else
    return (( m_uiCost * (m_puiHorCost[ x * (1<<m_iCostScale) ] + m_puiVerCost[ y * (1<<m_iCostScale) ]) ) >> 16);
#endif
  }
  UInt    getCost( UInt b )                 { return ( m_uiCost * b ) >> 16; }
  UInt    getBits( Int x, Int y )          
  {
#if FIX203
    return xGetComponentBits((x << m_iCostScale) - m_mvPredictor.getHor())
    +      xGetComponentBits((y << m_iCostScale) - m_mvPredictor.getVer());
#else
    return m_puiHorCost[ x * (1<<m_iCostScale)] + m_puiVerCost[ y * (1<<m_iCostScale) ];
#endif
  }
  
private:
  
  static UInt xGetSSE           ( DistParam* pcDtParam );
  static UInt xGetSSE4          ( DistParam* pcDtParam );
  static UInt xGetSSE8          ( DistParam* pcDtParam );
  static UInt xGetSSE16         ( DistParam* pcDtParam );
  static UInt xGetSSE32         ( DistParam* pcDtParam );
  static UInt xGetSSE64         ( DistParam* pcDtParam );
  static UInt xGetSSE16N        ( DistParam* pcDtParam );
  
  static UInt xGetSAD           ( DistParam* pcDtParam );
  static UInt xGetSAD4          ( DistParam* pcDtParam );
  static UInt xGetSAD8          ( DistParam* pcDtParam );
  static UInt xGetSAD16         ( DistParam* pcDtParam );
  static UInt xGetSAD32         ( DistParam* pcDtParam );
  static UInt xGetSAD64         ( DistParam* pcDtParam );
  static UInt xGetSAD16N        ( DistParam* pcDtParam );
  
#if AMP_SAD
  static UInt xGetSAD12         ( DistParam* pcDtParam );
  static UInt xGetSAD24         ( DistParam* pcDtParam );
  static UInt xGetSAD48         ( DistParam* pcDtParam );

#endif

  static UInt xGetHADs4         ( DistParam* pcDtParam );
  static UInt xGetHADs8         ( DistParam* pcDtParam );
  static UInt xGetHADs          ( DistParam* pcDtParam );
  static UInt xCalcHADs2x2      ( Pel *piOrg, Pel *piCurr, Int iStrideOrg, Int iStrideCur, Int iStep );
  static UInt xCalcHADs4x4      ( Pel *piOrg, Pel *piCurr, Int iStrideOrg, Int iStrideCur, Int iStep );
  static UInt xCalcHADs8x8      ( Pel *piOrg, Pel *piCurr, Int iStrideOrg, Int iStrideCur, Int iStep );
#if NS_HAD
  static UInt xCalcHADs16x4     ( Pel *piOrg, Pel *piCurr, Int iStrideOrg, Int iStrideCur, Int iStep );
  static UInt xCalcHADs4x16     ( Pel *piOrg, Pel *piCurr, Int iStrideOrg, Int iStrideCur, Int iStep );
#endif
  
public:
#if WEIGHTED_CHROMA_DISTORTION
  UInt   getDistPart( Pel* piCur, Int iCurStride,  Pel* piOrg, Int iOrgStride, UInt uiBlkWidth, UInt uiBlkHeight, Bool bWeighted = false, DFunc eDFunc = DF_SSE );
#else
  UInt   getDistPart( Pel* piCur, Int iCurStride,  Pel* piOrg, Int iOrgStride, UInt uiBlkWidth, UInt uiBlkHeight, DFunc eDFunc = DF_SSE );
#endif
  
};// END CLASS DEFINITION TComRdCost

//! \}

#endif // __TCOMRDCOST__
