A bug for combination of CIIP and WP

[chujoh]

There is a bug for combination of CIIP and WP.
When chroma coefficients or offsets of weighted prediction are existed, results between encoder and decoder are not identical.
The following changes should be introduced.

In /source/Lib/CommonLib/InterPrediction.cpp,
void InterPrediction::xPredInterBi(PredictionUnit &pu, PelUnitBuf &pcYuvPred, const bool luma, const bool chroma, PelUnitBuf *yuvPredTmp /*= NULL*/)

   if (dmvrApplied)
    {
      if (yuvPredTmp)
      {
        yuvPredTmp->addAvg(srcPred0, srcPred1, slice.clpRngs(), false);
      }
      xProcessDMVR(pu, pcYuvPred, slice.clpRngs(), bioApplied);
    }

->

   if (dmvrApplied)
    {
      if (yuvPredTmp)
      {
        if( pps.getWPBiPred() && slice.getSliceType() == B_SLICE &&
            wp0[COMPONENT_Cb].bPresentFlag || wp1[COMPONENT_Cb].bPresentFlag ||
            wp0[COMPONENT_Cr].bPresentFlag || wp1[COMPONENT_Cr].bPresentFlag) )
        {
          yuvPredTmp->addAvg(srcPred0, srcPred1, slice.clpRngs(), false, true);
          xWeightedPredictionBi( pu, srcPred0, srcPred1, pcYuvPred, m_maxCompIDToPred, false, true );
          yuvPredTmp->copyFrom(pcYuvPred, false, true);
        }
        else
        {
          yuvPredTmp->addAvg(srcPred0, srcPred1, slice.clpRngs(), false);
        }
      }
      xProcessDMVR(pu, pcYuvPred, slice.clpRngs(), bioApplied);
    }

[chujoh]

As a result of adoption of JVET-Q0128, this bug has been resolved.