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/** \file     TrQuant.h

    \brief    transform and quantization class (header)

*/

#pragma once

#include "CommonDef.h"

#include "Unit.h"

#include "Contexts.h"

#include "ContextModelling.h"

#include "UnitPartitioner.h"

#include "Quant.h"

#include "DepQuant.h"

//! \ingroup CommonLib

//! \{

namespace vvenc {

#if defined(TARGET_SIMD_X86)  && (ENABLE_SIMD_OPT_QUANT || ENABLE_SIMD_TRAFO)

using namespace x86_simd;

#endif

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

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

typedef std::pair<int, bool> TrMode;

typedef std::pair<int, int>  TrCost;

/// transform and quantization class

class TrQuant

{

public:

  TrQuant();

  ~TrQuant();

  // initialize class

  void init(

             const Quant* otherQuant,

             const int  rdoq,

             const bool bUseRDOQTS,

             const bool scalingListsEnabled,

             const bool bEnc,

             const int  thrValue            

           );

public:

  void invTransformNxN    ( TransformUnit& tu, const ComponentID compID, PelBuf& pResi, const QpParam& cQPs);

  void transformNxN       ( TransformUnit& tu, const ComponentID compID, const QpParam& cQP, TCoeff &uiAbsSum, const Ctx& ctx, const bool loadTr = false);

  void checktransformsNxN ( TransformUnit& tu, std::vector<TrMode> *trModes, const int maxCand, const ComponentID compID = COMP_Y);

  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 );

  void   setLambdas  ( const double lambdas[MAX_NUM_COMP] )   { m_quant->setLambdas( lambdas ); }

  void   selectLambda( const ComponentID compIdx )            { m_quant->selectLambda( compIdx ); }

  void   getLambdas  ( double (&lambdas)[MAX_NUM_COMP]) const { m_quant->getLambdas( lambdas ); }

  void   scaleLambda ( const double scale)                    { m_quant->scaleLambda(scale);}

  DepQuant* getQuant ()                                       { return m_quant; }

protected:

  TCoeff*   m_plTempCoeff;

  bool      m_bEnc;

  bool      m_scalingListEnabled;

  TCoeff*   m_blk;

  TCoeff*   m_tmp;

private:

  DepQuant* m_quant;          //!< Quantizer

  TCoeff    m_tempInMatrix[48];

  TCoeff    m_tempOutMatrix[48];

  TCoeff   *m_mtsCoeffs[NUM_TRAFO_MODES_MTS];

  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&);

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

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

  uint32_t xGetLFNSTIntraMode( const Area& tuArea, const uint32_t dirMode );

  bool     xGetTransposeFlag(uint32_t intraMode);

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

  void     xInvLfnst    ( const TransformUnit &tu, const ComponentID compID);

  void     xSetTrTypes  ( const TransformUnit& tu, const ComponentID compID, const int width, const int height, int &trTypeHor, int &trTypeVer );

  // forward Transform

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

  // 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 );

  // skipping Transform

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

  // inverse skipping transform

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

#if defined(TARGET_SIMD_X86)  && (ENABLE_SIMD_TRAFO )

  template<X86_VEXT vext>

  void _initTrQuantX86();

  void initTrQuantX86();

#endif

};// END CLASS DEFINITION TrQuant

} // namespace vvenc

//! \}