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


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

  // initialize class
  void init      (
                    const Quant* otherQuant,
                    const uint32_t uiMaxTrSize,
                    const bool bUseRDOQ             = false,
                    const bool bUseRDOQTS           = false,
#if T0196_SELECTIVE_RDOQ
                    const bool useSelectiveRDOQ     = false,
#endif
                    const bool bEnc                 = false,
                    const bool useTransformSkipFast = false
  );
  void getTrTypes(const TransformUnit tu, const ComponentID compID, int &trTypeHor, int &trTypeVer);

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

  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);
#if JVET_O0502_ISP_CLEANUP
  void transformNxN     ( TransformUnit& tu, const ComponentID& compID, const QpParam& cQP, std::vector<TrMode>* trModes, const int maxCand );
  void transformNxN     ( TransformUnit& tu, const ComponentID& compID, const QpParam& cQP, TCoeff& uiAbsSum, const Ctx& ctx, const bool loadTr = false );
#else
  void transformNxN     ( TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, std::vector<TrMode>* trModes, const int maxCand, double* diagRatio = nullptr, double* horVerRatio = nullptr );
  void transformNxN     ( TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, TCoeff &uiAbsSum, const Ctx &ctx, const bool loadTr = false, double* diagRatio = nullptr, double* horVerRatio = nullptr );
#endif
  void rdpcmNxN         (TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, TCoeff &uiAbsSum,       RDPCMMode &rdpcmMode);
  void applyForwardRDPCM(TransformUnit &tu, const ComponentID &compID, const QpParam &cQP, TCoeff &uiAbsSum, const RDPCMMode &rdpcmMode);

  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);

#if JVET_O0105_ICT
  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 );
  std::vector<int>            selectICTCandidates ( const TransformUnit &tu, CompStorage* resCb, CompStorage* resCr );
#endif

  void invRdpcmNxN(TransformUnit& tu, const ComponentID &compID, PelBuf &pcResidual);
#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; }


#if ENABLE_SPLIT_PARALLELISM
  void    copyState( const TrQuant& other );
#endif

protected:
  TCoeff*  m_plTempCoeff;
  uint32_t     m_uiMaxTrSize;
  bool     m_bEnc;
  bool     m_useTransformSkipFast;

  bool     m_scalingListEnabledFlag;

private:
  DepQuant *m_quant;          //!< Quantizer
  TCoeff** m_mtsCoeffs;
  TCoeff   m_tempInMatrix [ 48 ];
  TCoeff   m_tempOutMatrix[ 48 ];
#if JVET_O0105_ICT
  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&);
#endif


  // 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 &uiAbsSum, 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__
