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/** \file     QuantRDOQ2.h

    \brief    RDOQ class (header)

*/

#pragma once

#include "CommonDef.h"

#include "Unit.h"

#include "Contexts.h"

#include "ContextModelling.h"

#include "QuantRDOQ.h"

//! \ingroup CommonLib

//! \{

namespace vvenc {

  typedef int64_t cost_t ;

// ====================================================================================================================

// Class definition

// ====================================================================================================================

/// transform and quantization class

class QuantRDOQ2 : public QuantRDOQ

{

public:

  QuantRDOQ2( const Quant* other, bool useScalingLists );

  ~QuantRDOQ2();

public:

  virtual void setFlatScalingList      ( const int maxLog2TrDynamicRange[MAX_NUM_CH], const BitDepths &bitDepths );

  virtual void quant                   ( TransformUnit &tu, const ComponentID compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx& ctx );

private:

  int* xGetErrScaleCoeffSL             ( unsigned list, unsigned sizeX, unsigned sizeY, int qp ) { return m_errScale[sizeX][sizeY][list][qp]; };  //!< get Error Scale Coefficent

  int  xGetErrScaleCoeff               ( const bool needsSqrt2, SizeType width, SizeType height, int qp, const int maxLog2TrDynamicRange, const int channelBitDepth);

  int& xGetErrScaleCoeffNoScalingList  ( unsigned list, unsigned sizeX, unsigned sizeY, int qp ) { return m_errScaleNoScalingList[sizeX][sizeY][list][qp]; };  //!< get Error Scale Coefficent

  void xInitScalingList                ( const QuantRDOQ2* other );

  void xDestroyScalingList             ();

  void xSetErrScaleCoeff               ( unsigned list, unsigned sizeX, unsigned sizeY, int qp, const int maxLog2TrDynamicRange[MAX_NUM_CH], const BitDepths &bitDepths );

  void xSetErrScaleCoeffNoScalingList  ( unsigned list, unsigned wIdx, unsigned hIdx, int qp, const int maxLog2TrDynamicRange[MAX_NUM_CH], const BitDepths &bitDepths );

  void xInitLastPosBitsTab             ( const CoeffCodingContext& cctx, const unsigned uiWidth, const unsigned uiHeight, const ChannelType chType, const FracBitsAccess& fracBits );

  inline cost_t xiGetICost              ( int iRate ) const;

  inline cost_t xGetIEPRate             () const;

  inline cost_t xiGetICRateCost ( const unsigned     uiAbsLevel,

                                  const BinFracBits& fracBitsPar,

                                  const BinFracBits& fracBitsGt1,

                                  const BinFracBits& fracBitsGt2,

                                  const int          remRegBins,

                                  unsigned           goRiceZero,

                                  const uint16_t     ui16AbsGoRice,

                                  const int          maxLog2TrDynamicRange ) const;

  inline cost_t xiGetCostSigCoeffGroup  ( const BinFracBits& fracBitsSigCG, unsigned uiSignificanceCoeffGroup ) const;

  inline cost_t xLevelCost              ( const uint32_t uiAbsLevel, const int iScaledLevel, const int iQBits, const cost_t iErrScale, const cost_t iErrScaleShift, const cost_t costSig, const BinFracBits& fracBitsPar, const BinFracBits& fracBitsGt1, const BinFracBits& fracBitsGt2, const int remRegBins, unsigned goRiceZero, const uint16_t goRiceParam, const bool extendedPrecision, const int maxLog2TrDynamicRange ) const;

  inline cost_t xiGetCostLast           ( const unsigned uiPosX, const unsigned uiPosY, const ChannelType chType ) const;

  inline cost_t xiGetCostSigCoef        ( const BinFracBits& fracBitsSig, unsigned uiSignificance ) const;

  template< bool bSBH, bool bUseScalingList >

  int xRateDistOptQuantFast( TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx &ctx );

  int xRateDistOptQuant    ( TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx &ctx, bool bUseScalingList );

private:

  bool    m_isErrScaleListOwner;

  int64_t m_iLambda;

  //QuantErrScale m_quantErrScale;

  int     m_lastBitsX             [MAX_NUM_CH][LAST_SIGNIFICANT_GROUPS];

  int     m_lastBitsY             [MAX_NUM_CH][LAST_SIGNIFICANT_GROUPS];

  int*    m_errScale              [SCALING_LIST_SIZE_NUM][SCALING_LIST_SIZE_NUM][SCALING_LIST_NUM][SCALING_LIST_REM_NUM]; ///< array of quantization matrix coefficient 4x4

  int     m_errScaleNoScalingList [SCALING_LIST_SIZE_NUM][SCALING_LIST_SIZE_NUM][SCALING_LIST_NUM][SCALING_LIST_REM_NUM]; ///< array of quantization matrix coefficient 4x4

  CtxTpl  m_tplBuf                [MAX_TB_SIZEY * MAX_TB_SIZEY];

};// END CLASS DEFINITION QuantRDOQ2

} // namespace vvenc

//! \}