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/** \file     BitAllocation.h

\brief    Bit allocation class for QP adaptation and, possibly, rate control (header)

*/

#pragma once

#include "CommonLib/Slice.h"

#include "CommonLib/Unit.h"

//! \ingroup EncoderLib

//! \{

namespace vvenc {

  // visual activity

  struct VisAct

  {

    VisAct()

      : hpSpatAct( 0.0 )

      , hpTempAct( 0.0 )

      , hpVisAct ( 0.0 )

      , spatAct  ( 0 )

      , tempAct  ( 0 )

      , visAct   ( 0 )

      , minAct   ( 0 )

    {

    }

    double   hpSpatAct;  // spatial high precision

    double   hpTempAct;  // temporal high precision

    double   hpVisAct;   // visual activity high precision

    unsigned spatAct;    // spatial  in 12 bit

    unsigned tempAct;    // temporal in 12 bit

    unsigned visAct;     // visual activity 12 bit

    unsigned minAct;     // minimal activity

  };

  void calcSpatialVisAct ( const Pel* pSrc,

                           const int iSrcStride,

                           const int height,

                           const int width,

                           const uint32_t bitDepth,

                           const bool isUHD,

                           VisAct& va );

  void calcTemporalVisAct ( const Pel* pSrc,

                            const int iSrcStride,

                            const int height,

                            const int width,

                            const Pel* pSM1,

                            const int iSM1Stride,

                            const Pel* pSM2,

                            const int iSM2Stride,

                            uint32_t frameRate,

                            const uint32_t bitDepth,

                            const bool isUHD,

                            VisAct& va );

  void updateVisAct ( VisAct& va, const uint32_t bitDepth );

  double filterAndCalculateAverageActivity ( const Pel* pSrc,

                                             const int iSrcStride,

                                             const int height,

                                             const int width,

                                             const Pel* pSM1,

                                             const int iSM1Stride,

                                             const Pel* pSM2,

                                             const int iSM2Stride,

                                             uint32_t frameRate,

                                             const uint32_t bitDepth,

                                             const bool isUHD,

                                             unsigned* minVisAct,

                                             unsigned* spVisAct );

  // BitAllocation functions

  namespace BitAllocation

  {

    int applyQPAdaptationSlice ( const Slice* slice,

                                 const VVEncCfg* encCfg,

                                 const int sliceQP,

                                 const double sliceLambda,

                                 uint16_t* const picVisActLuma,

                                 std::vector<int>& ctuPumpRedQP,

                                 std::vector<uint8_t>* ctuRCQPMemory,

                                 int* const optChromaQPOffsets,

                                 const uint8_t* minNoiseLevels,

                                 const uint32_t ctuStartAddr,

                                 const uint32_t ctuBoundingAddr );

    int applyQPAdaptationSubCtu( const Slice* slice,

                                 const VVEncCfg* encCfg,

                                 const Area& lumaArea,

                                 const uint8_t* minNoiseLevels );

    int getCtuPumpingReducingQP( const Slice* slice,

                                 const CPelBuf& origY,

                                 const Distortion uiSadBestForQPA,

                                 std::vector<int>& ctuPumpRedQP,

                                 const uint32_t ctuRsAddr,

                                 const int baseQP,

                                 const bool isBIM );

  }

} // namespace vvenc

//! \}