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/** \file     TrQuant.h
    \brief    transform and quantization class (header)
*/

#ifndef __TRQUANT__
#define __TRQUANT__

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

#include "UnitPartitioner.h"
#include "Quant.h"

#include "DepQuant.h"
//! \ingroup CommonLib
//! \{

typedef void FwdTrans(const TCoeff*, TCoeff*, int, int, int, int);
typedef void InvTrans(const TCoeff*, TCoeff*, int, int, int, int, const TCoeff, const TCoeff);

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

using CbfMaskList = static_vector<int, 3>;
using TrModeList  = static_vector<TrMode, NUM_TRAFO_MODES_MTS>;

/// transform and quantization class
class TrQuant
{
public:
  TrQuant();
  ~TrQuant();

  //ALBERTO
  TrQuant::TrQuant(const TrQuant& other)
  {
    m_quant = new DepQuant(*other.m_quant);
    std::memcpy(m_tempCoeff, other.m_tempCoeff, sizeof(m_tempCoeff));
    m_mtsCoeffs = other.m_mtsCoeffs;
    std::memcpy(m_tempInMatrix, other.m_tempInMatrix, sizeof(m_tempInMatrix));
    std::memcpy(m_tempOutMatrix, other.m_tempOutMatrix, sizeof(m_tempOutMatrix));
    std::memcpy(m_invICTMem, other.m_invICTMem, sizeof(m_invICTMem));
    std::memcpy(m_fwdICTMem, other.m_fwdICTMem, sizeof(m_fwdICTMem));
    m_invICT = other.m_invICT;
    m_fwdICT = other.m_fwdICT;
  }
  //END ALBERTO

  // initialize class
  void init      (
                    const Quant* otherQuant,
                    const uint32_t uiMaxTrSize,
                    const bool bUseRDOQ,
                    const bool bUseRDOQTS,
                    const bool useSelectiveRDOQ,
                    const bool bEnc
  );
  void getTrTypes(const TransformUnit tu, const ComponentID compID, TransType &trTypeHor, TransType &trTypeVer);

  void fwdLfnstNxN( TCoeff* src, TCoeff* dst, const uint32_t mode, const uint32_t index, const uint32_t size, int zeroOutSize );
  void invLfnstNxN( TCoeff* src, TCoeff* dst, const uint32_t mode, const uint32_t index, const uint32_t size, int zeroOutSize, const int maxLog2TrDynamicRange );

  uint32_t getLFNSTIntraMode( int wideAngPredMode );
  bool     getTransposeFlag ( uint32_t intraMode  );

protected:

  void xFwdLfnst( const TransformUnit &tu, const ComponentID compID, const bool loadTr = false );
  void xInvLfnst( const TransformUnit &tu, const ComponentID compID );

public:

  void invTransformNxN  (TransformUnit &tu, const ComponentID &compID, PelBuf &pResi, const QpParam &cQPs);
  void transformNxN(TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, TrModeList &trModes,
                    const int maxCand);
  void transformNxN(TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, TCoeff &absSum, const Ctx &ctx,
                    const bool loadTr = false);

  void transformSkipQuantOneSample(TransformUnit &tu, const ComponentID &compID, const TCoeff &resiDiff, TCoeff &coeff,    const uint32_t &uiPos, const QpParam &cQP, const bool bUseHalfRoundingPoint);
  void invTrSkipDeQuantOneSample  (TransformUnit &tu, const ComponentID &compID, const TCoeff &pcCoeff,  Pel &reconSample, const uint32_t &uiPos, const QpParam &cQP);

  void                        invTransformICT     ( const TransformUnit &tu, PelBuf &resCb, PelBuf &resCr );
  std::pair<int64_t,int64_t>  fwdTransformICT     ( const TransformUnit &tu, const PelBuf &resCb, const PelBuf &resCr, PelBuf& resC1, PelBuf& resC2, int jointCbCr = -1 );

  void selectICTCandidates(const TransformUnit &tu, CompStorage *resCb, CompStorage *resCr,
                           CbfMaskList &cbfMasksToTest);

#if RDOQ_CHROMA_LAMBDA
  void   setLambdas  ( const double lambdas[MAX_NUM_COMPONENT] )   { m_quant->setLambdas( lambdas ); }
  void   selectLambda( const ComponentID compIdx )                 { m_quant->selectLambda( compIdx ); }
  void   getLambdas  ( double (&lambdas)[MAX_NUM_COMPONENT]) const { m_quant->getLambdas( lambdas ); }
#endif
  void   setLambda   ( const double dLambda )                      { m_quant->setLambda( dLambda ); }
  double getLambda   () const                                      { return m_quant->getLambda(); }

  DepQuant* getQuant() { return m_quant; }
  void   lambdaAdjustColorTrans(bool forward) { m_quant->lambdaAdjustColorTrans(forward); }
  void   resetStore() { m_quant->resetStore(); }

protected:
  TCoeff   m_tempCoeff[MAX_TB_SIZEY * MAX_TB_SIZEY];

private:
  DepQuant *m_quant;          //!< Quantizer

  EnumArray<TCoeff[MAX_TB_SIZEY * MAX_TB_SIZEY], MtsType> m_mtsCoeffs;

  TCoeff   m_tempInMatrix [ 48 ];
  TCoeff   m_tempOutMatrix[ 48 ];
  static const int maxAbsIctMode = 3;
  void                      (*m_invICTMem[1+2*maxAbsIctMode])(PelBuf&,PelBuf&);
  std::pair<int64_t,int64_t>(*m_fwdICTMem[1+2*maxAbsIctMode])(const PelBuf&,const PelBuf&,PelBuf&,PelBuf&);
  void                      (**m_invICT)(PelBuf&,PelBuf&);
  std::pair<int64_t,int64_t>(**m_fwdICT)(const PelBuf&,const PelBuf&,PelBuf&,PelBuf&);


  // forward Transform
  void xT               (const TransformUnit &tu, const ComponentID &compID, const CPelBuf &resi, CoeffBuf &dstCoeff, const int width, const int height);

  // skipping Transform
  void xTransformSkip   (const TransformUnit &tu, const ComponentID &compID, const CPelBuf &resi, TCoeff* psCoeff);

  // quantization
  void xQuant(TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &absSum, const QpParam &cQP,
              const Ctx &ctx);

  // dequantization
  void xDeQuant( const TransformUnit &tu,
                       CoeffBuf      &dstCoeff,
                 const ComponentID   &compID,
                 const QpParam       &cQP      );

  // inverse transform
  void xIT     ( const TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pCoeff, PelBuf &pResidual );

  // inverse skipping transform
  void xITransformSkip(
                 const CCoeffBuf     &plCoef,
                       PelBuf        &pResidual,
                 const TransformUnit &tu,
                 const ComponentID   &component);

  void xGetCoeffEnergy(
                       TransformUnit  &tu,
                 const ComponentID    &compID,
                 const CoeffBuf       &coeffs,
                       double*        diagRatio,
                       double*        horVerRatio );
};// END CLASS DEFINITION TrQuant

//! \}

#endif // __TRQUANT__
