/* -----------------------------------------------------------------------------
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the Software are granted under this license.

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     this list of conditions and the following disclaimer.

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     software without specific prior written permission.

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

 /** \file     Reshape.h
     \brief    reshaping header and class (header)
 */

#pragma once

#include "CommonDef.h"
#include "Buffer.h"
#include "Slice.h"

namespace vvdec
{

class CodingStructure;

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

class Reshape
{
protected:
  SliceReshapeInfo        m_sliceReshapeInfo;
  Pel*                    m_invLUT;
  std::vector<int>        m_chromaAdjHelpLUT;
  std::vector<uint16_t>   m_binCW;
  uint16_t                m_initCW;
  std::vector<Pel>        m_reshapePivot;
  std::vector<Pel>        m_inputPivot;
  std::vector<Pel>        m_fwdScaleCoef;
  std::vector<Pel>        m_invScaleCoef;
  int                     m_lumaBD;
  int                     m_reshapeLUTSize;
  int                     m_chromaScale;
  int                     m_vpduX;
  int                     m_vpduY;
public:
  Reshape();
  ~Reshape();

  void createDec(int bitDepth);
  void destroy();

  void initSlice( int nalUnitLayerId, const PicHeader& picHeader, const VPS* vps );
  void rspCtuBcw( CodingStructure &cs, int col, int ln ) const;
  void rspBufFwd( PelBuf& buf ) const;

  bool getCTUFlag( const Slice& slice ) const;

  int  calculateChromaAdj(Pel avgLuma) const;
  int  getPWLIdxInv(int lumaVal) const;
  SliceReshapeInfo& getSliceReshaperInfo() { return m_sliceReshapeInfo; }
  void copySliceReshaperInfo(SliceReshapeInfo& tInfo, SliceReshapeInfo& sInfo);

  void constructReshaper();
  int  calculateChromaAdjVpduNei(TransformUnit &tu, const Position pos);
  void setVPDULoc(int x, int y) { m_vpduX = x, m_vpduY = y; }
  bool isVPDUprocessed(int x, int y) { return ((x == m_vpduX) && (y == m_vpduY)); }
  void setChromaScale (int chromaScale) { m_chromaScale = chromaScale; }
  int  getChromaScale() { return m_chromaScale; }
};// END CLASS DEFINITION Reshape

}   // namespace vvdec
