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/** \file     QuantRDOQ.h
    \brief    RDOQ class (header)
*/

#ifndef __QUANTRDOQ__
#define __QUANTRDOQ__

#include "CommonDef.h"
#include "Unit.h"
#include "ChromaFormat.h"
#include "Contexts.h"
#include "ContextModelling.h"

#include "Quant.h"

//! \ingroup CommonLib
//! \{

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

/// transform and quantization class
class QuantRDOQ : public Quant
{
public:
  QuantRDOQ( const Quant* other );
  ~QuantRDOQ();

public:
  void setFlatScalingList   ( const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths );
  void setScalingList       ( ScalingList *scalingList, const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths);
  // quantization
  void quant                ( TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx& ctx );
  void forwardBDPCM(TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum,
                    const QpParam &cQP, const Ctx &ctx);

private:
  double* xGetErrScaleCoeffSL            ( uint32_t list, uint32_t sizeX, uint32_t sizeY, int qp ) { return m_errScale[sizeX][sizeY][list][qp]; };  //!< get Error Scale Coefficent
  double  xGetErrScaleCoeff              ( const bool needsSqrt2, SizeType width, SizeType height, int qp, const int maxLog2TrDynamicRange, const int channelBitDepth, bool bTransformSkip);
  double& xGetErrScaleCoeffNoScalingList ( uint32_t list, uint32_t sizeX, uint32_t sizeY, int qp ) { return m_errScaleNoScalingList[sizeX][sizeY][list][qp]; };  //!< get Error Scale Coefficent
  void    xInitScalingList               ( const QuantRDOQ* other );
  void    xDestroyScalingList            ();
  void    xSetErrScaleCoeff              ( uint32_t list, uint32_t sizeX, uint32_t sizeY, int qp, const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths );
  void    xDequantSample                 ( TCoeff& pRes, TCoeff& coeff, const TrQuantParams& trQuantParams );
  // RDOQ functions
  void xRateDistOptQuant(TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx &ctx);

  inline uint32_t xGetCodedLevel( double&            rd64CodedCost,
                              double&            rd64CodedCost0,
                              double&            rd64CodedCostSig,
                              Intermediate_Int   lLevelDouble,
                              uint32_t               uiMaxAbsLevel,
                              const BinFracBits* fracBitsSig,
                              const BinFracBits& fracBitsPar,
                              const BinFracBits& fracBitsGt1,
                              const BinFracBits& fracBitsGt2,
                              const int          remRegBins,
                              unsigned           goRiceZero,
                              uint16_t             ui16AbsGoRice,
                              int                iQBits,
                              double             errorScale,
                              bool               bLast,
                              bool               useLimitedPrefixLength,
                              const int          maxLog2TrDynamicRange ) const;
  inline int xGetICRate     ( const uint32_t         uiAbsLevel,
                              const BinFracBits& fracBitsPar,
                              const BinFracBits& fracBitsGt1,
                              const BinFracBits& fracBitsGt2,
                              const int          remRegBins,
                              unsigned           goRiceZero,
                              const uint16_t       ui16AbsGoRice,
                              const bool         useLimitedPrefixLength,
                              const int          maxLog2TrDynamicRange  ) const;
  inline double xGetRateLast         ( const int* lastBitsX, const int* lastBitsY,
                                       unsigned        PosX, unsigned   PosY                              ) const;

  inline double xGetRateSigCoeffGroup( const BinFracBits& fracBitsSigCG,   unsigned uiSignificanceCoeffGroup ) const;

  inline double xGetRateSigCoef      ( const BinFracBits& fracBitsSig,     unsigned uiSignificance           ) const;

  inline double xGetICost            ( double dRate                                                      ) const;
  inline double xGetIEPRate          (                                                                   ) const;

  void xRateDistOptQuantTS( TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &coeffs, TCoeff &absSum, const QpParam &qp, const Ctx &ctx );

  inline uint32_t xGetCodedLevelTSPred(double&            rd64CodedCost,
    double&            rd64CodedCost0,
    double&            rd64CodedCostSig,
    Intermediate_Int    levelDouble,
    int                 qBits,
    double              errorScale,
    uint32_t coeffLevels[],
    double coeffLevelError[],
    const BinFracBits* fracBitsSig,
    const BinFracBits& fracBitsPar,
    CoeffCodingContext& cctx,
    const FracBitsAccess& fracBitsAccess,
    const BinFracBits& fracBitsSign,
    const BinFracBits& fracBitsGt1,
    const uint8_t      sign,
    int                rightPixel,
    int                belowPixel,
    uint16_t           ricePar,
    bool               isLast,
    bool               useLimitedPrefixLength,
    const int          maxLog2TrDynamicRange
    , int&               numUsedCtxBins
  ) const;

  inline int xGetICRateTS   ( const uint32_t            absLevel,
                              const BinFracBits&        fracBitsPar,
                              const CoeffCodingContext& cctx,
                              const FracBitsAccess&     fracBitsAccess,
                              const BinFracBits&        fracBitsSign,
                              const BinFracBits&        fracBitsGt1,
                              int&                      numCtxBins,
                              const uint8_t             sign,
                              const uint16_t            ricePar,
                              const bool                useLimitedPrefixLength,
                              const int                 maxLog2TrDynamicRange  ) const;
private:
  bool    m_isErrScaleListOwner;

  double *m_errScale             [SCALING_LIST_SIZE_NUM][SCALING_LIST_SIZE_NUM][SCALING_LIST_NUM][SCALING_LIST_REM_NUM]; ///< array of quantization matrix coefficient 4x4
  double  m_errScaleNoScalingList[SCALING_LIST_SIZE_NUM][SCALING_LIST_SIZE_NUM][SCALING_LIST_NUM][SCALING_LIST_REM_NUM]; ///< array of quantization matrix coefficient 4x4
  // temporary buffers for RDOQ
  double m_pdCostCoeff        [MAX_TB_SIZEY * MAX_TB_SIZEY];
  double m_pdCostSig          [MAX_TB_SIZEY * MAX_TB_SIZEY];
  double m_pdCostCoeff0       [MAX_TB_SIZEY * MAX_TB_SIZEY];
  double m_pdCostCoeffGroupSig[(MAX_TB_SIZEY * MAX_TB_SIZEY) >> MLS_CG_SIZE]; // even if CG size is 2 (if one of the sides is 2) instead of 4, there should be enough space
  int    m_rateIncUp          [MAX_TB_SIZEY * MAX_TB_SIZEY];
  int    m_rateIncDown        [MAX_TB_SIZEY * MAX_TB_SIZEY];
  int    m_sigRateDelta       [MAX_TB_SIZEY * MAX_TB_SIZEY];
  TCoeff m_deltaU             [MAX_TB_SIZEY * MAX_TB_SIZEY];
  TCoeff m_fullCoeff          [MAX_TB_SIZEY * MAX_TB_SIZEY];
  int   m_bdpcm;
  int   m_testedLevels;
};// END CLASS DEFINITION QuantRDOQ

//! \}

#endif // __QUANTRDOQ__
