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/** \file     SampleAdaptiveOffset.h

    \brief    sample adaptive offset class (header)

*/

#pragma once

#include "CommonDef.h"

#include "Unit.h"

//! \ingroup CommonLib

//! \{

namespace vvenc {

#if defined(TARGET_SIMD_X86)  && ENABLE_SIMD_OPT_SAO

using namespace x86_simd;

#endif

template<typename T> static inline int sgn( T val )

{

  return ( T( 0 ) < val ) - ( val < T( 0 ) );

}

Unexecuted instantiation: SampleAdaptiveOffset_sse41.cpp:int vvenc::sgn<int>(int)

Unexecuted instantiation: SampleAdaptiveOffset_avx2.cpp:int vvenc::sgn<int>(int)

Unexecuted instantiation: SampleAdaptiveOffset.cpp:int vvenc::sgn<int>(int)

Unexecuted instantiation: EncSampleAdaptiveOffset.cpp:int vvenc::sgn<int>(int)

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

// Constants

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

#define MAX_SAO_TRUNCATED_BITDEPTH     10

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

// Class definition

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

  enum Available

  {

    LeftAvail = 1,

    RightAvail = 2,

    AboveAvail = 4,

    BelowAvail = 8,

    AboveLeftAvail = 16,

    AboveRightAvail = 32,

    BelowLeftAvail = 64,

    BelowRightAvail = 128,

  };

class SampleAdaptiveOffset

{

public:

  SampleAdaptiveOffset( bool enableOpt = true );

  virtual ~SampleAdaptiveOffset();

  void        init            ( ChromaFormat format, uint32_t maxCUWidth, uint32_t maxCUHeight, uint32_t lumaBitShift, uint32_t chromaBitShift );

  static int  getMaxOffsetQVal( const int channelBitDepth) { return (1<<(std::min<int>(channelBitDepth,MAX_SAO_TRUNCATED_BITDEPTH)-5))-1; } //Table 9-32, inclusive

  void ( *calcSaoStatisticsBo )( int width, int endX, int endY, Pel* srcLine, Pel* orgLine, int srcStride,

                                 int orgStride, int channelBitDepth, int64_t* count, int64_t* diff );

protected:

  void deriveLoopFilterBoundaryAvailibility( CodingStructure& cs, const Position& pos, uint8_t& availMask ) const;

  void (*offsetBlock) ( const int     channelBitDepth,

                        const ClpRng& clpRng,

                        int           typeIdx,

                        int*          offset,

                        int           startIdx,

                        const Pel*    srcBlk,

                        Pel*          resBlk,

                        ptrdiff_t     srcStride,

                        ptrdiff_t     resStride,

                        int           width,

                        int           height,

                        uint8_t       availMask,

                        std::vector<int8_t> &signLineBuf1,

                        std::vector<int8_t> &signLineBuf2);

  void (*calcSaoStatisticsEo0) (int width,int startX,int endX,int endY,Pel*  srcLine,Pel*  orgLine,int srcStride,int orgStride, int64_t *count,int64_t  *diff);

  void (*calcSaoStatisticsEo90) (int width,int endX,int startY,int endY,Pel*  srcLine,Pel*  orgLine,int srcStride,int orgStride,int64_t  *count, int64_t *diff,int8_t *signUpLine);

  void (*calcSaoStatisticsEo135) (int width,int startX,int endX,int endY,Pel*  srcLine,Pel*  orgLine,int srcStride,int orgStride,int64_t  *count, int64_t *diff,int8_t *signUpLine,int8_t *signDownLine);

  void (*calcSaoStatisticsEo45) (int width,int startX,int endX,int endY,Pel*  srcLine,Pel*  orgLine,int srcStride,int orgStride,int64_t  *count, int64_t *diff,int8_t *signUpLine);

  void invertQuantOffsets       (ComponentID compIdx, int typeIdc, int typeAuxInfo, int* dstOffsets, int* srcOffsets);

  void reconstructBlkSAOParam   (SAOBlkParam& recParam, SAOBlkParam* mergeList[NUM_SAO_MERGE_TYPES]);

  int  getMergeList             (CodingStructure& cs, int ctuRsAddr, SAOBlkParam* blkParams, SAOBlkParam* mergeList[NUM_SAO_MERGE_TYPES]);

  void offsetCTU                (const UnitArea& area, const CPelUnitBuf& src, PelUnitBuf& res, SAOBlkParam& saoblkParam, CodingStructure& cs);

  void xReconstructBlkSAOParams (CodingStructure& cs, SAOBlkParam* saoBlkParams);

#if defined(TARGET_SIMD_X86)  && ENABLE_SIMD_OPT_SAO

  void initSampleAdaptiveOffsetX86();

  template <X86_VEXT vext>

  void _initSampleAdaptiveOffsetX86();

#endif

#if defined( TARGET_SIMD_ARM ) && ENABLE_SIMD_OPT_SAO

  void initSampleAdaptiveOffsetARM();

  template<ARM_VEXT vext>

  void _initSampleAdaptiveOffsetARM();

#endif

protected:

  uint32_t    m_offsetStepLog2[MAX_NUM_COMP]; //offset step

  uint32_t    m_numberOfComponents;

  std::vector<int8_t> m_signLineBuf1;

  std::vector<int8_t> m_signLineBuf2;

private:

  bool m_picSAOEnabled[MAX_NUM_COMP];

};

} // namespace vvenc

//! \}