/* -----------------------------------------------------------------------------

The copyright in this software is being made available under the Clear BSD

License, included below. No patent rights, trademark rights and/or 

other Intellectual Property Rights other than the copyrights concerning 

the Software are granted under this license.

The Clear BSD License

Copyright (c) 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification,

are permitted (subject to the limitations in the disclaimer below) provided that

the following conditions are met:

     * Redistributions of source code must retain the above copyright notice,

     this list of conditions and the following disclaimer.

     * Redistributions in binary form must reproduce the above copyright

     notice, this list of conditions and the following disclaimer in the

     documentation and/or other materials provided with the distribution.

     * Neither the name of the copyright holder nor the names of its

     contributors may be used to endorse or promote products derived from this

     software without specific prior written permission.

NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY

THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND

CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR

CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR

BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER

IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

------------------------------------------------------------------------------------------- */

/** \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;   // a transform type (mtsIdx) and whether to test it

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

// Fixed-capacity lists, because a search builds them for every block: the transform types to try and their costs.

typedef static_vector<TrMode, NUM_TRAFO_MODES_MTS> TrModeList;

typedef static_vector<TrCost, NUM_TRAFO_MODES_MTS> TrCostList;

/// 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, TrModeList *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

//! \}