InterPrediction.cpp

        *dst++ = ClipPel( rightShift( (splitDir == 0 ? *src1 : *src0) + offsetDefault, shiftDefault), clipRng );
        src0++;
        src1++;
      }

      tmpWeightedStart = std::max((int32_t)0, weightedStartPos);
      tmpWeightedEnd   = std::min(weightedEndPos, (int32_t)(width - 1));
      weightIdx        = 1;
      if( weightedStartPos < 0 )
      {
        weightIdx     += abs(weightedStartPos) / ratioWH;
      }
      for( x = tmpWeightedStart; x <= tmpWeightedEnd; x+= ratioWH )
      {
        for( tmpX = ratioWH; tmpX > 0; tmpX-- )
        {
          tmpPelWeighted = Clip3( 1, 7, longWeight ? weightIdx : (weightIdx * 2));
          tmpPelWeighted = splitDir ? ( 8 - tmpPelWeighted ) : tmpPelWeighted;
          *dst++         = ClipPel( rightShift( (tmpPelWeighted*(*src0++) + ((8 - tmpPelWeighted) * (*src1++)) + offsetWeighted), shiftWeighted ), clipRng );
        }
        weightIdx ++;
      }

      for( x = weightedEndPos + 1; x < width; x++ )
      {
        *dst++ = ClipPel( rightShift( (splitDir == 0 ? *src0 : *src1) + offsetDefault, shiftDefault ), clipRng );
        src0++;
        src1++;
      }

      dst  += strideDst;
      src0 += strideSrc0;
      src1 += strideSrc1;
    }
    weightedStartPos += weightedPosoffset;
    weightedEndPos   += weightedPosoffset;
  }
}
#endif

#if JVET_O0297_DMVR_PADDING // For Dec speedup
void InterPrediction::xPrefetch(PredictionUnit& pu, PelUnitBuf &pcPad, RefPicList refId, bool forLuma)
{
  int offset, width, height;
  Mv cMv;
  const Picture* refPic = pu.cu->slice->getRefPic(refId, pu.refIdx[refId]);
  int mvShift = (MV_FRACTIONAL_BITS_INTERNAL);

  int start = 0;
  int end = MAX_NUM_COMPONENT;

  start = forLuma ? 0 : 1;
  end = forLuma ? 1 : MAX_NUM_COMPONENT;

  for (int compID = start; compID < end; compID++)
  {
    cMv = Mv(pu.mv[refId].getHor(), pu.mv[refId].getVer());
    pcPad.bufs[compID].stride = (pcPad.bufs[compID].width + (2 * DMVR_NUM_ITERATION) + NTAPS_LUMA);
    int filtersize = (compID == (COMPONENT_Y)) ? NTAPS_LUMA : NTAPS_CHROMA;
    width = pcPad.bufs[compID].width;
    height = pcPad.bufs[compID].height;
    offset = (DMVR_NUM_ITERATION) * (pcPad.bufs[compID].stride + 1);
    int mvshiftTemp = mvShift + getComponentScaleX((ComponentID)compID, pu.chromaFormat);
    width += (filtersize - 1);
    height += (filtersize - 1);
    cMv += Mv(-(((filtersize >> 1) - 1) << mvshiftTemp),
      -(((filtersize >> 1) - 1) << mvshiftTemp));
    clipMv(cMv, pu.lumaPos(), pu.lumaSize(), *pu.cs->sps);
    /* Pre-fetch similar to HEVC*/
    {
      CPelBuf refBuf;
      Position Rec_offset = pu.blocks[compID].pos().offset(cMv.getHor() >> mvshiftTemp, cMv.getVer() >> mvshiftTemp);
      refBuf = refPic->getRecoBuf(CompArea((ComponentID)compID, pu.chromaFormat, Rec_offset, pu.blocks[compID].size()));
      PelBuf &dstBuf = pcPad.bufs[compID];
      g_pelBufOP.copyBuffer((Pel *)refBuf.buf, refBuf.stride, ((Pel *)dstBuf.buf) + offset, dstBuf.stride, width, height);
    }
  }
}
void InterPrediction::xPad(PredictionUnit& pu, PelUnitBuf &pcPad, RefPicList refId)
{
  int offset = 0, width, height;
  int padsize;
  Mv cMv;
  for (int compID = 0; compID < MAX_NUM_COMPONENT; compID++)
  {
    int filtersize = (compID == (COMPONENT_Y)) ? NTAPS_LUMA : NTAPS_CHROMA;
    width = pcPad.bufs[compID].width;
    height = pcPad.bufs[compID].height;
    offset = (DMVR_NUM_ITERATION) * (pcPad.bufs[compID].stride + 1);
    padsize = (DMVR_NUM_ITERATION) >> getComponentScaleX((ComponentID)compID, pu.chromaFormat);
    width += (filtersize - 1);
    height += (filtersize - 1);
    /*padding on all side of size DMVR_PAD_LENGTH*/
    {
      g_pelBufOP.padding(pcPad.bufs[compID].buf + offset, pcPad.bufs[compID].stride, width, height, padsize);
    }
  }
}
#else
void InterPrediction::xPrefetchPad(PredictionUnit& pu, PelUnitBuf &pcPad, RefPicList refId)
{
  int offset, width, height;
  int padsize;
  Mv cMv;
  const Picture* refPic = pu.cu->slice->getRefPic(refId, pu.refIdx[refId]);
  int mvShift = (MV_FRACTIONAL_BITS_INTERNAL);
  for (int compID = 0; compID < MAX_NUM_COMPONENT; compID++)
  {
    cMv = Mv(pu.mv[refId].getHor(), pu.mv[refId].getVer());
    pcPad.bufs[compID].stride = (MAX_CU_SIZE + (2 * DMVR_NUM_ITERATION) + NTAPS_LUMA);
    int filtersize = (compID == (COMPONENT_Y)) ? NTAPS_LUMA : NTAPS_CHROMA;
    width = pcPad.bufs[compID].width;
    height = pcPad.bufs[compID].height;
    offset = (DMVR_NUM_ITERATION) * (pcPad.bufs[compID].stride + 1);
    padsize = (DMVR_NUM_ITERATION) >> getComponentScaleX((ComponentID)compID, pu.chromaFormat);
    int mvshiftTemp = mvShift + getComponentScaleX((ComponentID)compID, pu.chromaFormat);
    width += (filtersize - 1);
    height += (filtersize - 1);
    cMv += Mv(-(((filtersize >> 1) - 1) << mvshiftTemp),
      -(((filtersize >> 1) - 1) << mvshiftTemp));
    bool wrapRef = false;
    if( pu.cs->sps->getWrapAroundEnabledFlag() ) 
    {
      wrapRef = wrapClipMv( cMv, pu.blocks[0].pos(), pu.blocks[0].size(), pu.cs->sps);   
    }
    else {
      clipMv(cMv, pu.lumaPos(), pu.lumaSize(),*pu.cs->sps);
    }
    /* Pre-fetch similar to HEVC*/
    {
      CPelBuf refBuf;
      Position Rec_offset = pu.blocks[compID].pos().offset(cMv.getHor() >> mvshiftTemp, cMv.getVer() >> mvshiftTemp);
      refBuf = refPic->getRecoBuf(CompArea((ComponentID)compID, pu.chromaFormat, Rec_offset, pu.blocks[compID].size()), wrapRef);
      PelBuf &dstBuf = pcPad.bufs[compID];
      g_pelBufOP.copyBuffer((Pel *)refBuf.buf, refBuf.stride, ((Pel *)dstBuf.buf) + offset, dstBuf.stride, width, height);
#if JVET_J0090_MEMORY_BANDWITH_MEASURE
      JVET_J0090_SET_REF_PICTURE( refPic, (ComponentID)compID );
      for ( int row = 0 ; row < height ; row++ )
      {
        for ( int col = 0 ; col < width ; col++ )
        {
          JVET_J0090_CACHE_ACCESS( ((Pel *)refBuf.buf) + row * refBuf.stride + col, __FILE__, __LINE__ );
        }
      }
#endif
    }
    /*padding on all side of size DMVR_PAD_LENGTH*/
    {
      g_pelBufOP.padding(pcPad.bufs[compID].buf + offset, pcPad.bufs[compID].stride, width, height, padsize);
    }
  }
}
#endif
inline int32_t div_for_maxq7(int64_t N, int64_t D)
{
  int32_t sign, q;
  sign = 0;
  if (N < 0)
  {
    sign = 1;
    N = -N;
  }

  q = 0;
  D = (D << 3);
  if (N >= D)
  {
    N -= D;
    q++;
  }
  q = (q << 1);

  D = (D >> 1);
  if (N >= D)
  {
    N -= D;
    q++;
  }
  q = (q << 1);

  if (N >= (D >> 1))
    q++;

  if (sign)
    return (-q);
  return(q);
}

void xSubPelErrorSrfc(uint64_t *sadBuffer, int32_t *deltaMv)
{
  int64_t numerator, denominator;
  int32_t mvDeltaSubPel;
  int32_t mvSubPelLvl = 4;/*1: half pel, 2: Qpel, 3:1/8, 4: 1/16*/
                                                        /*horizontal*/
    numerator = (int64_t)((sadBuffer[1] - sadBuffer[3]) << mvSubPelLvl);
    denominator = (int64_t)((sadBuffer[1] + sadBuffer[3] - (sadBuffer[0] << 1)));

    if (0 != denominator)
    {
      if ((sadBuffer[1] != sadBuffer[0]) && (sadBuffer[3] != sadBuffer[0]))
      {
        mvDeltaSubPel = div_for_maxq7(numerator, denominator);
        deltaMv[0] = (mvDeltaSubPel);
      }
      else
      {
        if (sadBuffer[1] == sadBuffer[0])
        {
          deltaMv[0] = -8;// half pel
        }
        else
        {
          deltaMv[0] = 8;// half pel
        }
      }
    }

    /*vertical*/
    numerator = (int64_t)((sadBuffer[2] - sadBuffer[4]) << mvSubPelLvl);
    denominator = (int64_t)((sadBuffer[2] + sadBuffer[4] - (sadBuffer[0] << 1)));
    if (0 != denominator)
    {
      if ((sadBuffer[2] != sadBuffer[0]) && (sadBuffer[4] != sadBuffer[0]))
      {
        mvDeltaSubPel = div_for_maxq7(numerator, denominator);
        deltaMv[1] = (mvDeltaSubPel);
      }
      else
      {
        if (sadBuffer[2] == sadBuffer[0])
        {
          deltaMv[1] = -8;// half pel
        }
        else
        {
          deltaMv[1] = 8;// half pel
        }
      }
    }
  return;
}

void InterPrediction::xBIPMVRefine(int bd, Pel *pRefL0, Pel *pRefL1, uint64_t& minCost, int16_t *deltaMV, uint64_t *pSADsArray, int width, int height)
{
  const int32_t refStrideL0 = m_biLinearBufStride;
  const int32_t refStrideL1 = m_biLinearBufStride;
  Pel *pRefL0Orig = pRefL0;
  Pel *pRefL1Orig = pRefL1;
  for (int nIdx = 0; (nIdx < 25); ++nIdx)
  {
    int32_t sadOffset = ((m_pSearchOffset[nIdx].getVer() * ((2 * DMVR_NUM_ITERATION) + 1)) + m_pSearchOffset[nIdx].getHor());
    pRefL0 = pRefL0Orig + m_pSearchOffset[nIdx].hor + (m_pSearchOffset[nIdx].ver * refStrideL0);
    pRefL1 = pRefL1Orig - m_pSearchOffset[nIdx].hor - (m_pSearchOffset[nIdx].ver * refStrideL1);
    if (*(pSADsArray + sadOffset) == MAX_UINT64)
    {
      const uint64_t cost = xDMVRCost(bd, pRefL0, refStrideL0, pRefL1, refStrideL1, width, height);
      *(pSADsArray + sadOffset) = cost;
    }
    if (*(pSADsArray + sadOffset) < minCost)
    {
      minCost = *(pSADsArray + sadOffset);
      deltaMV[0] = m_pSearchOffset[nIdx].getHor();
      deltaMV[1] = m_pSearchOffset[nIdx].getVer();
    }
  }
}

void InterPrediction::xFinalPaddedMCForDMVR(PredictionUnit& pu, PelUnitBuf &pcYuvSrc0, PelUnitBuf &pcYuvSrc1, PelUnitBuf &pcPad0, PelUnitBuf &pcPad1, const bool bioApplied
  , const Mv mergeMV[NUM_REF_PIC_LIST_01]
#if JVET_O0297_DMVR_PADDING // For Dec speedup
  , bool blockMoved
#endif
)
{
  int offset, deltaIntMvX, deltaIntMvY;

  PelUnitBuf pcYUVTemp = pcYuvSrc0;
  PelUnitBuf pcPadTemp = pcPad0;
  /*always high precision MVs are used*/
  int mvShift = MV_FRACTIONAL_BITS_INTERNAL;

  for (int k = 0; k < NUM_REF_PIC_LIST_01; k++)
  {
    RefPicList refId = (RefPicList)k;
    Mv cMv = pu.mv[refId];
    m_iRefListIdx = refId;
    const Picture* refPic = pu.cu->slice->getRefPic(refId, pu.refIdx[refId]);
    Mv cMvClipped = cMv;
    clipMv(cMvClipped, pu.lumaPos(), pu.lumaSize(), *pu.cs->sps);

    Mv startMv = mergeMV[refId];

    if( g_mctsDecCheckEnabled && !MCTSHelper::checkMvForMCTSConstraint( pu, startMv, MV_PRECISION_INTERNAL ) )
    {
      const Area& tileArea = pu.cs->picture->mctsInfo.getTileArea();
      printf( "Attempt an access over tile boundary at block %d,%d %d,%d with MV %d,%d (in Tile TL: %d,%d BR: %d,%d)\n",
        pu.lx(), pu.ly(), pu.lwidth(), pu.lheight(), startMv.getHor(), startMv.getVer(), tileArea.topLeft().x, tileArea.topLeft().y, tileArea.bottomRight().x, tileArea.bottomRight().y );
      THROW( "MCTS constraint failed!" );
    }
    for (int compID = 0; compID < MAX_NUM_COMPONENT; compID++)
    {
#if JVET_O0297_DMVR_PADDING // For Dec speedup   
      Pel *srcBufPelPtr = NULL;
      int pcPadstride = 0;
      if (blockMoved || (compID == 0))
      {
        pcPadstride = pcPadTemp.bufs[compID].stride;
        int mvshiftTemp = mvShift + getComponentScaleX((ComponentID)compID, pu.chromaFormat);
        int leftPixelExtra;
        if (compID == COMPONENT_Y)
        {
          leftPixelExtra = (NTAPS_LUMA >> 1) - 1;
        }
        else
        {
          leftPixelExtra = (NTAPS_CHROMA >> 1) - 1;
        }
        PelBuf &srcBuf = pcPadTemp.bufs[compID];
        deltaIntMvX = (cMv.getHor() >> mvshiftTemp) -
          (startMv.getHor() >> mvshiftTemp);
        deltaIntMvY = (cMv.getVer() >> mvshiftTemp) -
          (startMv.getVer() >> mvshiftTemp);

        CHECK((abs(deltaIntMvX) > DMVR_NUM_ITERATION) || (abs(deltaIntMvY) > DMVR_NUM_ITERATION), "not expected DMVR movement");

        offset = (DMVR_NUM_ITERATION + leftPixelExtra) * (pcPadTemp.bufs[compID].stride + 1);
        offset += (deltaIntMvY)* pcPadTemp.bufs[compID].stride;
        offset += (deltaIntMvX);
        srcBufPelPtr = (srcBuf.buf + offset);
      }
      xPredInterBlk((ComponentID)compID, pu, refPic, cMvClipped, pcYUVTemp, true, pu.cs->slice->getClpRngs().comp[compID],
        bioApplied, false, 0, 0, 0, srcBufPelPtr, pcPadstride);
#else
      int mvshiftTemp = mvShift + getComponentScaleX((ComponentID)compID, pu.chromaFormat);
      int leftPixelExtra;
      if (compID == COMPONENT_Y)
      {
        leftPixelExtra = (NTAPS_LUMA >> 1) - 1;
      }
      else
      {
        leftPixelExtra = (NTAPS_CHROMA >> 1) - 1;
      }

      deltaIntMvX = (cMv.getHor() >> mvshiftTemp) -
        (startMv.getHor() >> mvshiftTemp);
      deltaIntMvY = (cMv.getVer() >> mvshiftTemp) -
        (startMv.getVer() >> mvshiftTemp);

      CHECK((abs(deltaIntMvX) > DMVR_NUM_ITERATION) || (abs(deltaIntMvY) > DMVR_NUM_ITERATION), "not expected DMVR movement");

      offset = (DMVR_NUM_ITERATION + leftPixelExtra) * (pcPadTemp.bufs[compID].stride + 1);
      offset += (deltaIntMvY)* pcPadTemp.bufs[compID].stride;
      offset += (deltaIntMvX);
      PelBuf &srcBuf = pcPadTemp.bufs[compID];
      xPredInterBlk((ComponentID)compID, pu, refPic, cMvClipped, pcYUVTemp, true, pu.cs->slice->getClpRngs().comp[compID],
        bioApplied, false, 0, 0, 0, (srcBuf.buf + offset), pcPadTemp.bufs[compID].stride);
#endif
    }
    pcYUVTemp = pcYuvSrc1;
    pcPadTemp = pcPad1;
  }
}

uint64_t InterPrediction::xDMVRCost(int bitDepth, Pel* pOrg, uint32_t refStride, const Pel* pRef, uint32_t orgStride, int width, int height)
{
  DistParam cDistParam;
  cDistParam.applyWeight = false;
  cDistParam.useMR = false;
  m_pcRdCost->setDistParam(cDistParam, pOrg, pRef, orgStride, refStride, bitDepth, COMPONENT_Y, width, height, 1);
  uint64_t uiCost = cDistParam.distFunc(cDistParam);
  return uiCost;
}

void xDMVRSubPixelErrorSurface(bool notZeroCost, int16_t *totalDeltaMV, int16_t *deltaMV, uint64_t *pSADsArray)
{

  int sadStride = (((2 * DMVR_NUM_ITERATION) + 1));
  uint64_t sadbuffer[5];
  if (notZeroCost && (abs(totalDeltaMV[0]) != (2 << MV_FRACTIONAL_BITS_INTERNAL))
    && (abs(totalDeltaMV[1]) != (2 << MV_FRACTIONAL_BITS_INTERNAL)))
  {
    int32_t tempDeltaMv[2] = { 0,0 };
    sadbuffer[0] = pSADsArray[0];
    sadbuffer[1] = pSADsArray[-1];
    sadbuffer[2] = pSADsArray[-sadStride];
    sadbuffer[3] = pSADsArray[1];
    sadbuffer[4] = pSADsArray[sadStride];
    xSubPelErrorSrfc(sadbuffer, tempDeltaMv);
    totalDeltaMV[0] += tempDeltaMv[0];
    totalDeltaMV[1] += tempDeltaMv[1];
  }
}

void InterPrediction::xinitMC(PredictionUnit& pu, const ClpRngs &clpRngs)
{
  const int refIdx0 = pu.refIdx[0];
  const int refIdx1 = pu.refIdx[1];
  /*use merge MV as starting MV*/
  Mv mergeMVL0(pu.mv[REF_PIC_LIST_0]);
  Mv mergeMVL1(pu.mv[REF_PIC_LIST_1]);

  /*Clip the starting MVs*/
  clipMv(mergeMVL0, pu.lumaPos(), pu.lumaSize(), *pu.cs->sps);
  clipMv(mergeMVL1, pu.lumaPos(), pu.lumaSize(), *pu.cs->sps);

  /*L0 MC for refinement*/
  {
    int offset;
    int leftPixelExtra = (NTAPS_LUMA >> 1) - 1;
    offset = (DMVR_NUM_ITERATION + leftPixelExtra) * (m_cYuvRefBuffDMVRL0.bufs[COMPONENT_Y].stride + 1);
    offset += (-(int)DMVR_NUM_ITERATION)* (int)m_cYuvRefBuffDMVRL0.bufs[COMPONENT_Y].stride;
    offset += (-(int)DMVR_NUM_ITERATION);
    PelBuf srcBuf = m_cYuvRefBuffDMVRL0.bufs[COMPONENT_Y];
    PelUnitBuf yuvPredTempL0 = PelUnitBuf(pu.chromaFormat, PelBuf(m_cYuvPredTempDMVRL0,
#if JVET_O0297_DMVR_PADDING // For Dec speedup
      m_biLinearBufStride
#else
      (MAX_CU_SIZE + (2 * DMVR_NUM_ITERATION))
#endif      
      , pu.lwidth() + (2 * DMVR_NUM_ITERATION), pu.lheight() + (2 * DMVR_NUM_ITERATION)));

    xPredInterBlk(COMPONENT_Y, pu, pu.cu->slice->getRefPic(REF_PIC_LIST_0, refIdx0), mergeMVL0, yuvPredTempL0, true, clpRngs.comp[COMPONENT_Y],
      false, false, pu.lwidth() + (2 * DMVR_NUM_ITERATION), pu.lheight() + (2 * DMVR_NUM_ITERATION), true, ((Pel *)srcBuf.buf) + offset, srcBuf.stride
    );
  }

  /*L1 MC for refinement*/
  {
    int offset;
    int leftPixelExtra = (NTAPS_LUMA >> 1) - 1;
    offset = (DMVR_NUM_ITERATION + leftPixelExtra) * (m_cYuvRefBuffDMVRL1.bufs[COMPONENT_Y].stride + 1);
    offset += (-(int)DMVR_NUM_ITERATION)* (int)m_cYuvRefBuffDMVRL1.bufs[COMPONENT_Y].stride;
    offset += (-(int)DMVR_NUM_ITERATION);
    PelBuf srcBuf = m_cYuvRefBuffDMVRL1.bufs[COMPONENT_Y];
    PelUnitBuf yuvPredTempL1 = PelUnitBuf(pu.chromaFormat, PelBuf(m_cYuvPredTempDMVRL1,
#if JVET_O0297_DMVR_PADDING // For Dec speedup
      m_biLinearBufStride
#else
      (MAX_CU_SIZE + (2 * DMVR_NUM_ITERATION))
#endif
      , pu.lwidth() + (2 * DMVR_NUM_ITERATION), pu.lheight() + (2 * DMVR_NUM_ITERATION)));

    xPredInterBlk(COMPONENT_Y, pu, pu.cu->slice->getRefPic(REF_PIC_LIST_1, refIdx1), mergeMVL1, yuvPredTempL1, true, clpRngs.comp[COMPONENT_Y],
      false, false, pu.lwidth() + (2 * DMVR_NUM_ITERATION), pu.lheight() + (2 * DMVR_NUM_ITERATION), true, ((Pel *)srcBuf.buf) + offset, srcBuf.stride
    );
  }
}

void InterPrediction::xProcessDMVR(PredictionUnit& pu, PelUnitBuf &pcYuvDst, const ClpRngs &clpRngs, const bool bioApplied)
{
  int iterationCount = 1;
  /*Always High Precision*/
  int mvShift = MV_FRACTIONAL_BITS_INTERNAL;

  /*use merge MV as starting MV*/
  Mv mergeMv[] = { pu.mv[REF_PIC_LIST_0] , pu.mv[REF_PIC_LIST_1] };

  m_biLinearBufStride = (MAX_CU_SIZE + (2 * DMVR_NUM_ITERATION));

  int dy = std::min<int>(pu.lumaSize().height, DMVR_SUBCU_HEIGHT);
  int dx = std::min<int>(pu.lumaSize().width,  DMVR_SUBCU_WIDTH);
#if !JVET_O0297_DMVR_PADDING
  /*L0 Padding*/
  m_cYuvRefBuffDMVRL0 = (pu.chromaFormat == CHROMA_400 ?
    PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y())) :
    PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y()),
      PelBuf(m_cRefSamplesDMVRL0[1], pcYuvDst.Cb()), PelBuf(m_cRefSamplesDMVRL0[2], pcYuvDst.Cr())));

  xPrefetchPad(pu, m_cYuvRefBuffDMVRL0, REF_PIC_LIST_0);

  /*L1 Padding*/
  m_cYuvRefBuffDMVRL1 = (pu.chromaFormat == CHROMA_400 ?
    PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y())) :
    PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y()), PelBuf(m_cRefSamplesDMVRL1[1], pcYuvDst.Cb()),
      PelBuf(m_cRefSamplesDMVRL1[2], pcYuvDst.Cr())));

  xPrefetchPad(pu, m_cYuvRefBuffDMVRL1, REF_PIC_LIST_1);

  JVET_J0090_SET_CACHE_ENABLE( false );
  xinitMC(pu, clpRngs);

  // point mc buffer to cetre point to avoid multiplication to reach each iteration to the begining
  Pel *biLinearPredL0 = m_cYuvPredTempDMVRL0 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;
  Pel *biLinearPredL1 = m_cYuvPredTempDMVRL1 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;
#endif
  Position puPos = pu.lumaPos();

  int bd = pu.cs->slice->getClpRngs().comp[COMPONENT_Y].bd;

#if JVET_O0055_INT_DMVR_DIS_BDOF
  int            bioEnabledThres = 8 * (dy >> 1) * dx;
  bool           bioAppliedType[MAX_NUM_SUBCU_DMVR];
#endif
  {
    int num = 0;

#if JVET_O0297_DMVR_PADDING // For Dec speedup
    int scaleX = getComponentScaleX(COMPONENT_Cb, pu.chromaFormat);
    int scaleY = getComponentScaleY(COMPONENT_Cb, pu.chromaFormat);
    m_biLinearBufStride = (dx + (2 * DMVR_NUM_ITERATION));
    // point mc buffer to cetre point to avoid multiplication to reach each iteration to the begining
    Pel *biLinearPredL0 = m_cYuvPredTempDMVRL0 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;
    Pel *biLinearPredL1 = m_cYuvPredTempDMVRL1 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;

    PredictionUnit subPu = pu;
    subPu.UnitArea::operator=(UnitArea(pu.chromaFormat, Area(puPos.x, puPos.y, dx, dy)));
    m_cYuvRefBuffDMVRL0 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y()),
        PelBuf(m_cRefSamplesDMVRL0[1], pcYuvDst.Cb()), PelBuf(m_cRefSamplesDMVRL0[2], pcYuvDst.Cr())));
    m_cYuvRefBuffDMVRL0 = m_cYuvRefBuffDMVRL0.subBuf(UnitAreaRelative(pu, subPu));

    m_cYuvRefBuffDMVRL1 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y()), PelBuf(m_cRefSamplesDMVRL1[1], pcYuvDst.Cb()),
        PelBuf(m_cRefSamplesDMVRL1[2], pcYuvDst.Cr())));
    m_cYuvRefBuffDMVRL1 = m_cYuvRefBuffDMVRL1.subBuf(UnitAreaRelative(pu, subPu));

    PelUnitBuf srcPred0 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[0][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[0][2], pcYuvDst.Cr())));
    PelUnitBuf srcPred1 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[1][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[1][2], pcYuvDst.Cr())));

    srcPred0 = srcPred0.subBuf(UnitAreaRelative(pu, subPu));
    srcPred1 = srcPred1.subBuf(UnitAreaRelative(pu, subPu));
#endif

    int yStart = 0;
    for (int y = puPos.y; y < (puPos.y + pu.lumaSize().height); y = y + dy, yStart = yStart + dy)
    {
      for (int x = puPos.x, xStart = 0; x < (puPos.x + pu.lumaSize().width); x = x + dx, xStart = xStart + dx)
      {
#if JVET_O0297_DMVR_PADDING
        PredictionUnit subPu = pu;
        subPu.UnitArea::operator=(UnitArea(pu.chromaFormat, Area(x, y, dx, dy)));
#if! JVET_O0297_DMVR_PADDING // For Dec speedup
        /*L0 Padding*/
#if! JVET_O0297_DMVR_PADDING // For Dec speedup
        m_cYuvRefBuffDMVRL0 = (pu.chromaFormat == CHROMA_400 ?
          PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y())) :
          PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL0[0], pcYuvDst.Y()),
            PelBuf(m_cRefSamplesDMVRL0[1], pcYuvDst.Cb()), PelBuf(m_cRefSamplesDMVRL0[2], pcYuvDst.Cr())));
        m_cYuvRefBuffDMVRL0 = m_cYuvRefBuffDMVRL0.subBuf(UnitAreaRelative(pu, subPu));
#endif
        xPrefetchPad(subPu, m_cYuvRefBuffDMVRL0, REF_PIC_LIST_0);

        /*L1 Padding*/
#if! JVET_O0297_DMVR_PADDING // For Dec speedup
        m_cYuvRefBuffDMVRL1 = (pu.chromaFormat == CHROMA_400 ?
          PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y())) :
          PelUnitBuf(pu.chromaFormat, PelBuf(m_cRefSamplesDMVRL1[0], pcYuvDst.Y()), PelBuf(m_cRefSamplesDMVRL1[1], pcYuvDst.Cb()),
            PelBuf(m_cRefSamplesDMVRL1[2], pcYuvDst.Cr())));
        m_cYuvRefBuffDMVRL1 = m_cYuvRefBuffDMVRL1.subBuf(UnitAreaRelative(pu, subPu));
#endif
        xPrefetchPad(subPu, m_cYuvRefBuffDMVRL1, REF_PIC_LIST_1);
#else
        xPrefetch(subPu, m_cYuvRefBuffDMVRL0, REF_PIC_LIST_0, 1);
        xPrefetch(subPu, m_cYuvRefBuffDMVRL1, REF_PIC_LIST_1, 1);
#endif

        xinitMC(subPu, clpRngs);

#if! JVET_O0297_DMVR_PADDING // For Dec speedup
        // point mc buffer to cetre point to avoid multiplication to reach each iteration to the begining
        Pel *biLinearPredL0 = m_cYuvPredTempDMVRL0 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;
        Pel *biLinearPredL1 = m_cYuvPredTempDMVRL1 + (DMVR_NUM_ITERATION * m_biLinearBufStride) + DMVR_NUM_ITERATION;
#endif
#endif
        uint64_t minCost = MAX_UINT64;
        bool notZeroCost = true;
        int16_t totalDeltaMV[2] = { 0,0 };
        int16_t deltaMV[2] = { 0, 0 };
        uint64_t  *pSADsArray;
        for (int i = 0; i < (((2 * DMVR_NUM_ITERATION) + 1) * ((2 * DMVR_NUM_ITERATION) + 1)); i++)
        {
          m_SADsArray[i] = MAX_UINT64;
        }
        pSADsArray = &m_SADsArray[(((2 * DMVR_NUM_ITERATION) + 1) * ((2 * DMVR_NUM_ITERATION) + 1)) >> 1];
#if !JVET_O0297_DMVR_PADDING
        Pel *addrL0Centre = biLinearPredL0 + yStart * m_biLinearBufStride + xStart;
        Pel *addrL1Centre = biLinearPredL1 + yStart * m_biLinearBufStride + xStart;
#endif
        for (int i = 0; i < iterationCount; i++)
        {
          deltaMV[0] = 0;
          deltaMV[1] = 0;
#if JVET_O0297_DMVR_PADDING
          Pel *addrL0 = biLinearPredL0 + totalDeltaMV[0] + (totalDeltaMV[1] * m_biLinearBufStride);
          Pel *addrL1 = biLinearPredL1 - totalDeltaMV[0] - (totalDeltaMV[1] * m_biLinearBufStride);
#else
          Pel *addrL0 = addrL0Centre + totalDeltaMV[0] + (totalDeltaMV[1] * m_biLinearBufStride);
          Pel *addrL1 = addrL1Centre - totalDeltaMV[0] - (totalDeltaMV[1] * m_biLinearBufStride);
#endif
          if (i == 0)
          {
            minCost = xDMVRCost(clpRngs.comp[COMPONENT_Y].bd, addrL0, m_biLinearBufStride, addrL1, m_biLinearBufStride, dx, dy);
#if JVET_O0590_REDUCE_DMVR_ORIG_MV_COST
            minCost -= (minCost >>2);            
#endif
            if (minCost < ((4 * dx * (dy >> 1/*for alternate line*/))))
            {
              notZeroCost = false;
              break;
            }
            pSADsArray[0] = minCost;
          }
          if (!minCost)
          {
            notZeroCost = false;
            break;
          }

          xBIPMVRefine(bd, addrL0, addrL1, minCost, deltaMV, pSADsArray, dx, dy);

          if (deltaMV[0] == 0 && deltaMV[1] == 0)
          {
            break;
          }
          totalDeltaMV[0] += deltaMV[0];
          totalDeltaMV[1] += deltaMV[1];
          pSADsArray += ((deltaMV[1] * (((2 * DMVR_NUM_ITERATION) + 1))) + deltaMV[0]);
        }

#if JVET_O0055_INT_DMVR_DIS_BDOF 
        bioAppliedType[num] = (minCost < bioEnabledThres) ? false : bioApplied;
#endif
        totalDeltaMV[0] = (totalDeltaMV[0] << mvShift);
        totalDeltaMV[1] = (totalDeltaMV[1] << mvShift);
        xDMVRSubPixelErrorSurface(notZeroCost, totalDeltaMV, deltaMV, pSADsArray);

        pu.mvdL0SubPu[num] = Mv(totalDeltaMV[0], totalDeltaMV[1]);
#if JVET_O0297_DMVR_PADDING
#if! JVET_O0297_DMVR_PADDING // For Dec speedup
        PelUnitBuf srcPred0 = (pu.chromaFormat == CHROMA_400 ?
        PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y())) :
        PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[0][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[0][2], pcYuvDst.Cr())));
        PelUnitBuf srcPred1 = (pu.chromaFormat == CHROMA_400 ?
        PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y())) :
        PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[1][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[1][2], pcYuvDst.Cr())));

        srcPred0 = srcPred0.subBuf(UnitAreaRelative(pu, subPu));
        srcPred1 = srcPred1.subBuf(UnitAreaRelative(pu, subPu));
#endif
        PelUnitBuf subPredBuf = pcYuvDst.subBuf(UnitAreaRelative(pu, subPu));

#if JVET_O0297_DMVR_PADDING // For Dec speedup
        bool blockMoved = false;
        if (pu.mvdL0SubPu[num] != Mv(0, 0))
        {
          blockMoved = true;
          xPrefetch(subPu, m_cYuvRefBuffDMVRL0, REF_PIC_LIST_0, 0);
          xPrefetch(subPu, m_cYuvRefBuffDMVRL1, REF_PIC_LIST_1, 0);
          xPad(subPu, m_cYuvRefBuffDMVRL0, REF_PIC_LIST_0);
          xPad(subPu, m_cYuvRefBuffDMVRL1, REF_PIC_LIST_1);
        }
#endif
        
        int dstStride[MAX_NUM_COMPONENT] = { pcYuvDst.bufs[COMPONENT_Y].stride, pcYuvDst.bufs[COMPONENT_Cb].stride, pcYuvDst.bufs[COMPONENT_Cr].stride };
        subPu.mv[0] = mergeMv[REF_PIC_LIST_0] + pu.mvdL0SubPu[num];
        subPu.mv[1] = mergeMv[REF_PIC_LIST_1] - pu.mvdL0SubPu[num];

        subPu.mv[0].clipToStorageBitDepth();
        subPu.mv[1].clipToStorageBitDepth();

#if JVET_O0055_INT_DMVR_DIS_BDOF 
        xFinalPaddedMCForDMVR(subPu, srcPred0, srcPred1, m_cYuvRefBuffDMVRL0, m_cYuvRefBuffDMVRL1, bioAppliedType[num], mergeMv
#else
        xFinalPaddedMCForDMVR(subPu, srcPred0, srcPred1, m_cYuvRefBuffDMVRL0, m_cYuvRefBuffDMVRL1, bioApplied, mergeMv
#endif
#if JVET_O0297_DMVR_PADDING // For Dec speedup
          , blockMoved
#endif
        );

        subPredBuf.bufs[COMPONENT_Y].buf = pcYuvDst.bufs[COMPONENT_Y].buf + xStart + yStart * dstStride[COMPONENT_Y];

#if !JVET_O0297_DMVR_PADDING // For Dec speedup
        int scaleX = getComponentScaleX(COMPONENT_Cb, pu.chromaFormat);
        int scaleY = getComponentScaleY(COMPONENT_Cb, pu.chromaFormat);
#endif
        subPredBuf.bufs[COMPONENT_Cb].buf = pcYuvDst.bufs[COMPONENT_Cb].buf + (xStart >> scaleX) + ((yStart >> scaleY) * dstStride[COMPONENT_Cb]);

#if !JVET_O0297_DMVR_PADDING // For Dec speedup
        scaleX = getComponentScaleX(COMPONENT_Cr, pu.chromaFormat);
        scaleY = getComponentScaleY(COMPONENT_Cr, pu.chromaFormat);
#endif
        subPredBuf.bufs[COMPONENT_Cr].buf = pcYuvDst.bufs[COMPONENT_Cr].buf + (xStart >> scaleX) + ((yStart >> scaleY) * dstStride[COMPONENT_Cr]);

#if JVET_O0055_INT_DMVR_DIS_BDOF 
        xWeightedAverage(subPu, srcPred0, srcPred1, subPredBuf, subPu.cu->slice->getSPS()->getBitDepths(), subPu.cu->slice->clpRngs(), bioAppliedType[num]);
#else
        xWeightedAverage(subPu, srcPred0, srcPred1, subPredBuf, subPu.cu->slice->getSPS()->getBitDepths(), subPu.cu->slice->clpRngs(), bioApplied);  
#endif
#endif
        num++;
      }
    }
  }
#if !JVET_O0297_DMVR_PADDING
  {
    PredictionUnit subPu = pu;
    subPu.UnitArea::operator=(UnitArea(pu.chromaFormat, Area(puPos.x, puPos.y, dx, dy)));
    PelUnitBuf           m_cYuvRefBuffSubCuDMVRL0;
    PelUnitBuf           m_cYuvRefBuffSubCuDMVRL1;
    PelUnitBuf srcPred0 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[0][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[0][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[0][2], pcYuvDst.Cr())));
    PelUnitBuf srcPred1 = (pu.chromaFormat == CHROMA_400 ?
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y())) :
      PelUnitBuf(pu.chromaFormat, PelBuf(m_acYuvPred[1][0], pcYuvDst.Y()), PelBuf(m_acYuvPred[1][1], pcYuvDst.Cb()), PelBuf(m_acYuvPred[1][2], pcYuvDst.Cr())));

    srcPred0 = srcPred0.subBuf(UnitAreaRelative(pu, subPu));
    srcPred1 = srcPred1.subBuf(UnitAreaRelative(pu, subPu));
    PelUnitBuf subPredBuf = pcYuvDst.subBuf(UnitAreaRelative(pu, subPu));

    int x = 0, y = 0;
    int xStart = 0, yStart = 0;
    int num = 0;

    int dstStride[MAX_NUM_COMPONENT] = { pcYuvDst.bufs[COMPONENT_Y].stride, pcYuvDst.bufs[COMPONENT_Cb].stride, pcYuvDst.bufs[COMPONENT_Cr].stride };
    for (y = puPos.y; y < (puPos.y + pu.lumaSize().height); y = y + dy, yStart = yStart + dy)
    {
      for (x = puPos.x, xStart = 0; x < (puPos.x + pu.lumaSize().width); x = x + dx, xStart = xStart + dx)
      {
        subPu.UnitArea::operator=(UnitArea(pu.chromaFormat, Area(x, y, dx, dy)));

        subPu.mv[0] = mergeMv[REF_PIC_LIST_0] + pu.mvdL0SubPu[num];
        subPu.mv[1] = mergeMv[REF_PIC_LIST_1] - pu.mvdL0SubPu[num];
        subPu.mv[0].clipToStorageBitDepth();
        subPu.mv[1].clipToStorageBitDepth();
        m_cYuvRefBuffSubCuDMVRL0 = m_cYuvRefBuffDMVRL0.subBuf(UnitAreaRelative(pu, subPu));
        m_cYuvRefBuffSubCuDMVRL1 = m_cYuvRefBuffDMVRL1.subBuf(UnitAreaRelative(pu, subPu));
#if JVET_O0055_INT_DMVR_DIS_BDOF 
        xFinalPaddedMCForDMVR(subPu, srcPred0, srcPred1, m_cYuvRefBuffSubCuDMVRL0, m_cYuvRefBuffSubCuDMVRL1, bioAppliedType[num], mergeMv);
#else
        xFinalPaddedMCForDMVR(subPu, srcPred0, srcPred1, m_cYuvRefBuffSubCuDMVRL0, m_cYuvRefBuffSubCuDMVRL1, bioApplied, mergeMv);
#endif

        subPredBuf.bufs[COMPONENT_Y].buf  = pcYuvDst.bufs[COMPONENT_Y].buf + xStart + yStart * dstStride[COMPONENT_Y];
        int scaleX = getComponentScaleX(COMPONENT_Cb, pu.chromaFormat);
        int scaleY =  getComponentScaleY(COMPONENT_Cb, pu.chromaFormat);
        subPredBuf.bufs[COMPONENT_Cb].buf = pcYuvDst.bufs[COMPONENT_Cb].buf + (xStart >> scaleX) + ((yStart >> scaleY) * dstStride[COMPONENT_Cb]);

        scaleX =  getComponentScaleX(COMPONENT_Cr, pu.chromaFormat);
        scaleY =  getComponentScaleY(COMPONENT_Cr, pu.chromaFormat);
        subPredBuf.bufs[COMPONENT_Cr].buf = pcYuvDst.bufs[COMPONENT_Cr].buf + (xStart >> scaleX) + ((yStart >> scaleY) * dstStride[COMPONENT_Cr]);

#if JVET_O0055_INT_DMVR_DIS_BDOF 
        xWeightedAverage(subPu, srcPred0, srcPred1, subPredBuf, subPu.cu->slice->getSPS()->getBitDepths(), subPu.cu->slice->clpRngs(), bioAppliedType[num]);
#else
        xWeightedAverage(subPu, srcPred0, srcPred1, subPredBuf, subPu.cu->slice->getSPS()->getBitDepths(), subPu.cu->slice->clpRngs(), bioApplied);
#endif
        num++;
      }
    }
  }
#endif
  JVET_J0090_SET_CACHE_ENABLE(true);
}
#if JVET_J0090_MEMORY_BANDWITH_MEASURE
void InterPrediction::cacheAssign( CacheModel *cache )
{
  m_cacheModel = cache;
  m_if.cacheAssign( cache );
  m_if.initInterpolationFilter( !cache->isCacheEnable() );
}
#endif

#if JVET_O1170_IBC_VIRTUAL_BUFFER
void InterPrediction::xFillIBCBuffer(CodingUnit &cu)
{
  for (auto &currPU : CU::traverseTUs(cu))
  {
    for (const CompArea &area : currPU.blocks)
    {
      if (!area.valid())
        continue;

      const unsigned int lcuWidth = cu.cs->slice->getSPS()->getMaxCUWidth();
      const int shiftSample = ::getComponentScaleX(area.compID, cu.chromaFormat);
      const int ctuSizeLog2 = g_aucLog2[lcuWidth] - shiftSample;
      const int pux = area.x & ((m_IBCBufferWidth >> shiftSample) - 1);
      const int puy = area.y & (( 1 << ctuSizeLog2 ) - 1);
      const CompArea dstArea = CompArea(area.compID, cu.chromaFormat, Position(pux, puy), Size(area.width, area.height));
      CPelBuf srcBuf = cu.cs->getRecoBuf(area);
      PelBuf dstBuf = m_IBCBuffer.getBuf(dstArea);

      dstBuf.copyFrom(srcBuf);
    }
  }
}

void InterPrediction::xIntraBlockCopy(PredictionUnit &pu, PelUnitBuf &predBuf, const ComponentID compID)
{
  const unsigned int lcuWidth = pu.cs->slice->getSPS()->getMaxCUWidth();
  int shiftSample = ::getComponentScaleX(compID, pu.chromaFormat);
  const int ctuSizeLog2 = g_aucLog2[lcuWidth] - shiftSample;
  pu.bv = pu.mv[REF_PIC_LIST_0];
  pu.bv.changePrecision(MV_PRECISION_INTERNAL, MV_PRECISION_INT);
  int refx, refy;
  if (compID == COMPONENT_Y)
  {
    refx = pu.Y().x + pu.bv.hor;
    refy = pu.Y().y + pu.bv.ver;
  }
  else
  {//Cb or Cr
    refx = pu.Cb().x + (pu.bv.hor >> shiftSample);
    refy = pu.Cb().y + (pu.bv.ver >> shiftSample);
  }
  refx &= ((m_IBCBufferWidth >> shiftSample) - 1);
  refy &= ((1 << ctuSizeLog2) - 1);

  if (refx + predBuf.bufs[compID].width <= (m_IBCBufferWidth >> shiftSample))
  {
    const CompArea srcArea = CompArea(compID, pu.chromaFormat, Position(refx, refy), Size(predBuf.bufs[compID].width, predBuf.bufs[compID].height));
    const CPelBuf refBuf = m_IBCBuffer.getBuf(srcArea);
    predBuf.bufs[compID].copyFrom(refBuf);
  }
  else
  {//wrap around
    int width = (m_IBCBufferWidth >> shiftSample) - refx;
    CompArea srcArea = CompArea(compID, pu.chromaFormat, Position(refx, refy), Size(width, predBuf.bufs[compID].height));
    CPelBuf srcBuf = m_IBCBuffer.getBuf(srcArea);
    PelBuf dstBuf = PelBuf(predBuf.bufs[compID].bufAt(Position(0, 0)), predBuf.bufs[compID].stride, Size(width, predBuf.bufs[compID].height));
    dstBuf.copyFrom(srcBuf);

    width = refx + predBuf.bufs[compID].width - (m_IBCBufferWidth >> shiftSample);
    srcArea = CompArea(compID, pu.chromaFormat, Position(0, refy), Size(width, predBuf.bufs[compID].height));
    srcBuf = m_IBCBuffer.getBuf(srcArea);
    dstBuf = PelBuf(predBuf.bufs[compID].bufAt(Position((m_IBCBufferWidth >> shiftSample) - refx, 0)), predBuf.bufs[compID].stride, Size(width, predBuf.bufs[compID].height));
    dstBuf.copyFrom(srcBuf);
  }
}

#if JVET_O1170_CHECK_BV_AT_DECODER
void InterPrediction::resetIBCBuffer(const ChromaFormat chromaFormatIDC, const int ctuSize)
{
  const UnitArea area = UnitArea(chromaFormatIDC, Area(0, 0, m_IBCBufferWidth, ctuSize));
  m_IBCBuffer.getBuf(area).fill(-1);
}

void InterPrediction::resetVPDUforIBC(const ChromaFormat chromaFormatIDC, const int ctuSize, const int vSize, const int xPos, const int yPos)
{
  const UnitArea area = UnitArea(chromaFormatIDC, Area(xPos & (m_IBCBufferWidth - 1), yPos & (ctuSize - 1), vSize, vSize));
  m_IBCBuffer.getBuf(area).fill(-1);
}

bool InterPrediction::isLumaBvValid(const int ctuSize, const int xCb, const int yCb, const int width, const int height, const int xBv, const int yBv)
{
  if(((yCb + yBv) & (ctuSize - 1)) + height > ctuSize)
  {
    return false;
  }
  int refTLx = xCb + xBv;
  int refTLy = (yCb + yBv) & (ctuSize - 1);
  PelBuf buf = m_IBCBuffer.Y();
  for(int x = 0; x < width; x += 4)
  {
    for(int y = 0; y < height; y += 4)
    {
      if(buf.at((x + refTLx) & (m_IBCBufferWidth - 1), y + refTLy) == -1) return false;
      if(buf.at((x + 3 + refTLx) & (m_IBCBufferWidth - 1), y + refTLy) == -1) return false;
      if(buf.at((x + refTLx) & (m_IBCBufferWidth - 1), y + 3 + refTLy) == -1) return false;
      if(buf.at((x + 3 + refTLx) & (m_IBCBufferWidth - 1), y + 3 + refTLy) == -1) return false;
    }
  }
  return true;
}
#endif
#endif