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/** \file     TComPrediction.h
    \brief    prediction class (header)
*/

#ifndef __TCOMPREDICTION__
#define __TCOMPREDICTION__


// Include files
#include "TComPic.h"
#include "TComMotionInfo.h"
#include "TComPattern.h"
#include "TComTrQuant.h"
#include "TComInterpolationFilter.h"
#include "TComWeightPrediction.h"

class TComTU; // forward declaration

//! \ingroup TLibCommon
//! \{

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

/// prediction class
typedef enum PRED_BUF_E
{
  PRED_BUF_UNFILTERED=0,
  PRED_BUF_FILTERED=1,
  NUM_PRED_BUF=2
} PRED_BUF;

static const UInt MAX_INTRA_FILTER_DEPTHS=5;

class TComPrediction : public TComWeightPrediction
{
private:
  static const UChar m_aucIntraFilter[MAX_NUM_CHANNEL_TYPE][MAX_INTRA_FILTER_DEPTHS];

protected:
  Pel*      m_piYuvExt[MAX_NUM_COMPONENT][NUM_PRED_BUF];
  Int       m_iYuvExtSize;

  TComYuv   m_acYuvPred[NUM_REF_PIC_LIST_01];
  TComYuv   m_cYuvPredTemp;
  TComYuv m_filteredBlock[LUMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS][LUMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS];
  TComYuv m_filteredBlockTmp[LUMA_INTERPOLATION_FILTER_SUB_SAMPLE_POSITIONS];

  TComInterpolationFilter m_if;

  Pel*   m_pLumaRecBuffer;       ///< array for downsampled reconstructed luma sample
  Int    m_iLumaRecStride;       ///< stride of #m_pLumaRecBuffer array

  Void xPredIntraAng            ( Int bitDepth, const Pel* pSrc, Int srcStride, Pel* pDst, Int dstStride, UInt width, UInt height, ChannelType channelType, ChromaFormat format, UInt dirMode, Bool blkAboveAvailable, Bool blkLeftAvailable, const Bool bEnableEdgeFilters );
  Void xPredIntraPlanar         ( const Pel* pSrc, Int srcStride, Pel* rpDst, Int dstStride, UInt width, UInt height, ChannelType channelType, ChromaFormat format );

  // motion compensation functions
  Void xPredInterUni            ( TComDataCU* pcCU,                          UInt uiPartAddr,               Int iWidth, Int iHeight, RefPicList eRefPicList, TComYuv* pcYuvPred, Bool bi=false          );
  Void xPredInterBi             ( TComDataCU* pcCU,                          UInt uiPartAddr,               Int iWidth, Int iHeight,                         TComYuv* pcYuvPred          );
  Void xPredInterBlk(const ComponentID compID, TComDataCU *cu, TComPicYuv *refPic, UInt partAddr, TComMv *mv, Int width, Int height, TComYuv *dstPic, Bool bi );
  Void xWeightedAverage         ( TComYuv* pcYuvSrc0, TComYuv* pcYuvSrc1, Int iRefIdx0, Int iRefIdx1, UInt uiPartAddr, Int iWidth, Int iHeight, TComYuv* pcYuvDst );

  Void xGetLLSPrediction ( const Pel* pSrc0, Int iSrcStride, Pel* pDst0, Int iDstStride, UInt uiWidth, UInt uiHeight, UInt uiExt0, const ChromaFormat chFmt  DEBUG_STRING_FN_DECLARE(sDebug) );

  Void xDCPredFiltering( const Pel* pSrc, Int iSrcStride, Pel* pDst, Int iDstStride, Int iWidth, Int iHeight, ChannelType channelType );
  Bool xCheckIdenticalMotion    ( TComDataCU* pcCU, UInt PartAddr);
  Void destroy();

public:
  TComPrediction();
  virtual ~TComPrediction();

  Void    initTempBuff(ChromaFormat chromaFormatIDC);

  ChromaFormat getChromaFormat() const { return m_cYuvPredTemp.getChromaFormat(); }

  // inter
  Void motionCompensation         ( TComDataCU*  pcCU, TComYuv* pcYuvPred, RefPicList eRefPicList = REF_PIC_LIST_X, Int iPartIdx = -1 );

  // motion vector prediction
  Void getMvPredAMVP              ( TComDataCU* pcCU, UInt uiPartIdx, UInt uiPartAddr, RefPicList eRefPicList, TComMv& rcMvPred );

  // Angular Intra
  Void predIntraAng               ( const ComponentID compID, UInt uiDirMode, Pel *piOrg /* Will be null for decoding */, UInt uiOrgStride, Pel* piPred, UInt uiStride, TComTU &rTu, Bool bAbove, Bool bLeft, const Bool bUseFilteredPredSamples, const Bool bUseLosslessDPCM = false );

  Pel  predIntraGetPredValDC      ( const Pel* pSrc, Int iSrcStride, UInt iWidth, UInt iHeight, ChannelType channelType, ChromaFormat format, Bool bAbove, Bool bLeft );

  Pel*  getPredictorPtr           ( const ComponentID compID, const Bool bUseFilteredPredictions )
  {
    return m_piYuvExt[compID][bUseFilteredPredictions?PRED_BUF_FILTERED:PRED_BUF_UNFILTERED];
  }

  // This function is actually still in TComPattern.cpp
  /// set parameters from CU data for accessing ADI data
  Void initAdiPatternChType ( TComTU &rTu,
                              Bool&       bAbove,
                              Bool&       bLeft,
                              const ComponentID compID, const Bool bFilterRefSamples
                              DEBUG_STRING_FN_DECLARE(sDebug)
                              );

  static Bool filteringIntraReferenceSamples(const ComponentID compID, UInt uiDirMode, UInt uiTuChWidth, UInt uiTuChHeight, const ChromaFormat chFmt, const Bool intraReferenceSmoothingDisabled);

  static Bool UseDPCMForFirstPassIntraEstimation(TComTU &rTu, const UInt uiDirMode);
};

//! \}

#endif // __TCOMPREDICTION__