EncGOP.cpp

        if (pcSlice->isIRAP())
        {
          if (pcSlice->getNalUnitType() >= NAL_UNIT_CODED_SLICE_IDR_W_RADL && pcSlice->getNalUnitType() <= NAL_UNIT_CODED_SLICE_IDR_N_LP)
          {
            pcSlice->setNoIncorrectPicOutputFlag(true);
          }
          //the inference for NoOutputPriorPicsFlag
          // KJS: This cannot happen at the encoder
          if (!m_bFirst && (pcSlice->isIRAP() || pcSlice->getNalUnitType() >= NAL_UNIT_CODED_SLICE_GDR) && pcSlice->getNoIncorrectPicOutputFlag())
          {
            if (pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA || pcSlice->getNalUnitType() >= NAL_UNIT_CODED_SLICE_GDR)
            {
              picHeader->setNoOutputOfPriorPicsFlag(true);
            }
          }
        }

        // code picture header before first slice
        if(sliceSegmentIdxCount == 0) 
        {
          // code RPL in picture header or slice headers
          if( !m_pcCfg->getSliceLevelRpl() && (!pcSlice->getIdrPicFlag() || pcSlice->getSPS()->getIDRRefParamListPresent()) )
          {
            picHeader->setPicRplPresentFlag(true);
            picHeader->setRPL0idx(pcSlice->getRPL0idx());
            picHeader->setRPL1idx(pcSlice->getRPL1idx());
            picHeader->setRPL0(pcSlice->getRPL0());
            picHeader->setRPL1(pcSlice->getRPL1());
            *picHeader->getLocalRPL0() = *pcSlice->getLocalRPL0();
            *picHeader->getLocalRPL1() = *pcSlice->getLocalRPL1();
          }
          else {
            picHeader->setPicRplPresentFlag(false);
          }
          
          // code DBLK in picture header or slice headers
          if( !m_pcCfg->getSliceLevelDblk() )
          {
            picHeader->setDeblockingFilterOverridePresentFlag( true );
            picHeader->setDeblockingFilterOverrideFlag   ( pcSlice->getDeblockingFilterOverrideFlag()   );
            picHeader->setDeblockingFilterDisable        ( pcSlice->getDeblockingFilterDisable()        ); 
            picHeader->setDeblockingFilterBetaOffsetDiv2 ( pcSlice->getDeblockingFilterBetaOffsetDiv2() ); 
            picHeader->setDeblockingFilterTcOffsetDiv2   ( pcSlice->getDeblockingFilterTcOffsetDiv2()   );
          }
          else {
            picHeader->setDeblockingFilterOverridePresentFlag( false );
          }
          
          // code SAO parameters in picture header or slice headers
          if( !m_pcCfg->getSliceLevelSao() )
          {
            picHeader->setSaoEnabledPresentFlag( true );
            picHeader->setSaoEnabledFlag(CHANNEL_TYPE_LUMA,   pcSlice->getSaoEnabledFlag(CHANNEL_TYPE_LUMA  ));
            picHeader->setSaoEnabledFlag(CHANNEL_TYPE_CHROMA, pcSlice->getSaoEnabledFlag(CHANNEL_TYPE_CHROMA));
          }
          else {
            picHeader->setSaoEnabledPresentFlag( false );
          }
          
          // code ALF parameters in picture header or slice headers
          if( !m_pcCfg->getSliceLevelAlf() )
          {
            picHeader->setAlfEnabledPresentFlag( true );
            picHeader->setAlfEnabledFlag(COMPONENT_Y,  pcSlice->getTileGroupAlfEnabledFlag(COMPONENT_Y ) );
            picHeader->setAlfEnabledFlag(COMPONENT_Cb, pcSlice->getTileGroupAlfEnabledFlag(COMPONENT_Cb) );
            picHeader->setAlfEnabledFlag(COMPONENT_Cr, pcSlice->getTileGroupAlfEnabledFlag(COMPONENT_Cr) );            
            picHeader->setNumAlfAps(pcSlice->getTileGroupNumAps());
            picHeader->setAlfAPSs(pcSlice->getTileGroupApsIdLuma());
            picHeader->setAlfApsIdChroma(pcSlice->getTileGroupApsIdChroma());
          }
          else {
            picHeader->setAlfEnabledPresentFlag( false );
          }

          pcPic->cs->picHeader->setPic(pcPic);
          pcPic->cs->picHeader->setValid();
          actualTotalBits += xWritePicHeader(accessUnit, pcPic->cs->picHeader);
        }
        pcSlice->setPicHeader( pcPic->cs->picHeader );

        for ( uint32_t ui = 0 ; ui < numSubstreams; ui++ )
        {
          substreamsOut[ui].clear();
        }

        /* start slice NALunit */
        OutputNALUnit nalu( pcSlice->getNalUnitType(), m_pcEncLib->getLayerId(), pcSlice->getTLayer() );
        m_HLSWriter->setBitstream( &nalu.m_Bitstream );


        tmpBitsBeforeWriting = m_HLSWriter->getNumberOfWrittenBits();
        m_HLSWriter->codeSliceHeader( pcSlice );
        actualHeadBits += ( m_HLSWriter->getNumberOfWrittenBits() - tmpBitsBeforeWriting );

        pcSlice->setFinalized(true);

        pcSlice->clearSubstreamSizes(  );
        {
          uint32_t numBinsCoded = 0;
          m_pcSliceEncoder->encodeSlice(pcPic, &(substreamsOut[0]), numBinsCoded);
          binCountsInNalUnits+=numBinsCoded;
        }
        {
          // Construct the final bitstream by concatenating substreams.
          // The final bitstream is either nalu.m_Bitstream or pcBitstreamRedirect;
          // Complete the slice header info.
          m_HLSWriter->setBitstream( &nalu.m_Bitstream );
          m_HLSWriter->codeTilesWPPEntryPoint( pcSlice );

          // Append substreams...
          OutputBitstream *pcOut = pcBitstreamRedirect;
          const int numSubstreamsToCode  = pcSlice->getNumberOfSubstreamSizes()+1;
          for ( uint32_t ui = 0 ; ui < numSubstreamsToCode; ui++ )
          {
            pcOut->addSubstream(&(substreamsOut[ui]));
          }
        }

        // If current NALU is the first NALU of slice (containing slice header) and more NALUs exist (due to multiple dependent slices) then buffer it.
        // If current NALU is the last NALU of slice and a NALU was buffered, then (a) Write current NALU (b) Update an write buffered NALU at approproate location in NALU list.
        bool bNALUAlignedWrittenToList    = false; // used to ensure current NALU is not written more than once to the NALU list.
        xAttachSliceDataToNalUnit(nalu, pcBitstreamRedirect);
        accessUnit.push_back(new NALUnitEBSP(nalu));
        actualTotalBits += uint32_t(accessUnit.back()->m_nalUnitData.str().size()) * 8;
        numBytesInVclNalUnits += (std::size_t)(accessUnit.back()->m_nalUnitData.str().size());
        bNALUAlignedWrittenToList = true;

        if (!bNALUAlignedWrittenToList)
        {
          nalu.m_Bitstream.writeAlignZero();
          accessUnit.push_back(new NALUnitEBSP(nalu));
        }

        if( ( m_pcCfg->getPictureTimingSEIEnabled() || m_pcCfg->getDecodingUnitInfoSEIEnabled() ) &&
            ( ( pcSlice->getSPS()->getHrdParameters()->getNalHrdParametersPresentFlag() )
           || ( pcSlice->getSPS()->getHrdParameters()->getVclHrdParametersPresentFlag() ) ) &&
            ( pcSlice->getSPS()->getHrdParameters()->getGeneralDecodingUnitHrdParamsPresentFlag() ) )
        {
            uint32_t numNalus = 0;
          uint32_t numRBSPBytes = 0;
          for (AccessUnit::const_iterator it = accessUnit.begin(); it != accessUnit.end(); it++)
          {
            numRBSPBytes += uint32_t((*it)->m_nalUnitData.str().size());
            numNalus ++;
          }
          duData.push_back(DUData());
          duData.back().accumBitsDU = ( numRBSPBytes << 3 );
          duData.back().accumNalsDU = numNalus;
        }
      } // end iteration over slices


      // cabac_zero_words processing
      cabac_zero_word_padding(pcSlice, pcPic, binCountsInNalUnits, numBytesInVclNalUnits, accessUnit.back()->m_nalUnitData, m_pcCfg->getCabacZeroWordPaddingEnabled());

      //-- For time output for each slice
      auto elapsed = std::chrono::steady_clock::now() - beforeTime;
      auto encTime = std::chrono::duration_cast<std::chrono::seconds>( elapsed ).count();

      std::string digestStr;
      if (m_pcCfg->getDecodedPictureHashSEIType()!=HASHTYPE_NONE)
      {
        SEIDecodedPictureHash *decodedPictureHashSei = new SEIDecodedPictureHash();
        PelUnitBuf recoBuf = pcPic->cs->getRecoBuf();
        m_seiEncoder.initDecodedPictureHashSEI(decodedPictureHashSei, recoBuf, digestStr, pcSlice->getSPS()->getBitDepths());
        trailingSeiMessages.push_back(decodedPictureHashSei);
      }

      m_pcCfg->setEncodedFlag(iGOPid, true);

      double PSNR_Y;
      xCalculateAddPSNRs(isField, isTff, iGOPid, pcPic, accessUnit, rcListPic, encTime, snr_conversion, printFrameMSE, &PSNR_Y, isEncodeLtRef );

#if HEVC_SEI
      // Only produce the Green Metadata SEI message with the last picture.
      if( m_pcCfg->getSEIGreenMetadataInfoSEIEnable() && pcSlice->getPOC() == ( m_pcCfg->getFramesToBeEncoded() - 1 )  )
      {
        SEIGreenMetadataInfo *seiGreenMetadataInfo = new SEIGreenMetadataInfo;
        m_seiEncoder.initSEIGreenMetadataInfo(seiGreenMetadataInfo, (uint32_t)(PSNR_Y * 100 + 0.5));
        trailingSeiMessages.push_back(seiGreenMetadataInfo);
      }
#endif

      xWriteTrailingSEIMessages(trailingSeiMessages, accessUnit, pcSlice->getTLayer(), pcSlice->getSPS());

      printHash(m_pcCfg->getDecodedPictureHashSEIType(), digestStr);

      if ( m_pcCfg->getUseRateCtrl() )
      {
        double avgQP     = m_pcRateCtrl->getRCPic()->calAverageQP();
        double avgLambda = m_pcRateCtrl->getRCPic()->calAverageLambda();
        if ( avgLambda < 0.0 )
        {
          avgLambda = lambda;
        }

        m_pcRateCtrl->getRCPic()->updateAfterPicture( actualHeadBits, actualTotalBits, avgQP, avgLambda, pcSlice->isIRAP());
        m_pcRateCtrl->getRCPic()->addToPictureLsit( m_pcRateCtrl->getPicList() );

        m_pcRateCtrl->getRCSeq()->updateAfterPic( actualTotalBits );
        if ( !pcSlice->isIRAP() )
        {
          m_pcRateCtrl->getRCGOP()->updateAfterPicture( actualTotalBits );
        }
        else    // for intra picture, the estimated bits are used to update the current status in the GOP
        {
          m_pcRateCtrl->getRCGOP()->updateAfterPicture( estimatedBits );
        }
  #if U0132_TARGET_BITS_SATURATION
        if (m_pcRateCtrl->getCpbSaturationEnabled())
        {
          m_pcRateCtrl->updateCpbState(actualTotalBits);
          msg( NOTICE, " [CPB %6d bits]", m_pcRateCtrl->getCpbState() );
        }
  #endif
      }
      xCreateFrameFieldInfoSEI( leadingSeiMessages, pcSlice, isField );
      xCreatePictureTimingSEI( m_pcCfg->getEfficientFieldIRAPEnabled() ? effFieldIRAPMap.GetIRAPGOPid() : 0, leadingSeiMessages, nestedSeiMessages, duInfoSeiMessages, pcSlice, isField, duData );
#if HEVC_SEI
     if( m_pcCfg->getScalableNestingSEIEnabled() )
      {
        xCreateScalableNestingSEI( leadingSeiMessages, nestedSeiMessages );
      }
#endif
      xWriteLeadingSEIMessages( leadingSeiMessages, duInfoSeiMessages, accessUnit, pcSlice->getTLayer(), pcSlice->getSPS(), duData );
      xWriteDuSEIMessages( duInfoSeiMessages, accessUnit, pcSlice->getTLayer(), pcSlice->getSPS(), duData );

      m_AUWriterIf->outputAU( accessUnit );

      msg( NOTICE, "\n" );
      fflush( stdout );
    }


    DTRACE_UPDATE( g_trace_ctx, ( std::make_pair( "final", 0 ) ) );

    pcPic->reconstructed = true;
    m_bFirst = false;
    m_iNumPicCoded++;
    if (!(m_pcCfg->getUseCompositeRef() && isEncodeLtRef))
    {
      for( int i = pcSlice->getTLayer() ; i < pcSlice->getSPS()->getMaxTLayers() ; i ++ )
      {
        m_totalCoded[i]++;
      }
    }
    /* logging: insert a newline at end of picture period */

    if (m_pcCfg->getEfficientFieldIRAPEnabled())
    {
      iGOPid=effFieldIRAPMap.restoreGOPid(iGOPid);
    }

    pcPic->destroyTempBuffers();
    pcPic->cs->destroyCoeffs();
    pcPic->cs->releaseIntermediateData();
  } // iGOPid-loop

  delete pcBitstreamRedirect;

  CHECK( m_iNumPicCoded > 1, "Unspecified error" );
}

void EncGOP::printOutSummary( uint32_t uiNumAllPicCoded, bool isField, const bool printMSEBasedSNR, const bool printSequenceMSE, const bool printHexPsnr, const bool printRprPSNR, const BitDepths &bitDepths )
{
#if ENABLE_QPA
  const bool    useWPSNR = m_pcEncLib->getUseWPSNR();
#endif
#if WCG_WPSNR
  const bool    useLumaWPSNR = m_pcEncLib->getLumaLevelToDeltaQPMapping().isEnabled() || (m_pcCfg->getLmcs() && m_pcCfg->getReshapeSignalType() == RESHAPE_SIGNAL_PQ);
#endif

  if( m_pcCfg->getDecodeBitstream(0).empty() && m_pcCfg->getDecodeBitstream(1).empty() && !m_pcCfg->useFastForwardToPOC() )
  {
    CHECK( !( uiNumAllPicCoded == m_gcAnalyzeAll.getNumPic() ), "Unspecified error" );
  }

  //--CFG_KDY
  const int rateMultiplier=(isField?2:1);
  m_gcAnalyzeAll.setFrmRate( m_pcCfg->getFrameRate()*rateMultiplier / (double)m_pcCfg->getTemporalSubsampleRatio());
  m_gcAnalyzeI.setFrmRate( m_pcCfg->getFrameRate()*rateMultiplier / (double)m_pcCfg->getTemporalSubsampleRatio());
  m_gcAnalyzeP.setFrmRate( m_pcCfg->getFrameRate()*rateMultiplier / (double)m_pcCfg->getTemporalSubsampleRatio());
  m_gcAnalyzeB.setFrmRate( m_pcCfg->getFrameRate()*rateMultiplier / (double)m_pcCfg->getTemporalSubsampleRatio());
#if WCG_WPSNR
  if (useLumaWPSNR)
  {
    m_gcAnalyzeWPSNR.setFrmRate(m_pcCfg->getFrameRate()*rateMultiplier / (double)m_pcCfg->getTemporalSubsampleRatio());
  }
#endif

  const ChromaFormat chFmt = m_pcCfg->getChromaFormatIdc();

  //-- all
  msg( INFO, "\n" );
  msg( DETAILS,"\nSUMMARY --------------------------------------------------------\n" );
#if JVET_O0756_CALCULATE_HDRMETRICS
  const bool calculateHdrMetrics = m_pcEncLib->getCalcluateHdrMetrics();
#endif
#if ENABLE_QPA
  m_gcAnalyzeAll.printOut( 'a', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths, useWPSNR
#if JVET_O0756_CALCULATE_HDRMETRICS
                          , calculateHdrMetrics
#endif
                          );
#else
  m_gcAnalyzeAll.printOut('a', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, bitDepths
#if JVET_O0756_CALCULATE_HDRMETRICS
                          , calculateHdrMetrics
#endif
                          );
#endif
  msg( DETAILS, "\n\nI Slices--------------------------------------------------------\n" );
  m_gcAnalyzeI.printOut( 'i', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths );

  msg( DETAILS, "\n\nP Slices--------------------------------------------------------\n" );
  m_gcAnalyzeP.printOut( 'p', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths );

  msg( DETAILS, "\n\nB Slices--------------------------------------------------------\n" );
  m_gcAnalyzeB.printOut( 'b', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths );

#if WCG_WPSNR
  if (useLumaWPSNR)
  {
    msg(DETAILS, "\nWPSNR SUMMARY --------------------------------------------------------\n");
    m_gcAnalyzeWPSNR.printOut( 'w', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths, useLumaWPSNR );
  }
#endif
  if (!m_pcCfg->getSummaryOutFilename().empty())
  {
    m_gcAnalyzeAll.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryOutFilename());
  }

  if (!m_pcCfg->getSummaryPicFilenameBase().empty())
  {
    m_gcAnalyzeI.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryPicFilenameBase()+"I.txt");
    m_gcAnalyzeP.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryPicFilenameBase()+"P.txt");
    m_gcAnalyzeB.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryPicFilenameBase()+"B.txt");
  }

#if WCG_WPSNR
  if (!m_pcCfg->getSummaryOutFilename().empty() && useLumaWPSNR)
  {
    m_gcAnalyzeWPSNR.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryOutFilename());
  }
#endif
  if(isField)
  {
    //-- interlaced summary
    m_gcAnalyzeAll_in.setFrmRate( m_pcCfg->getFrameRate() / (double)m_pcCfg->getTemporalSubsampleRatio());
    m_gcAnalyzeAll_in.setBits(m_gcAnalyzeAll.getBits());
    // prior to the above statement, the interlace analyser does not contain the correct total number of bits.

    msg( INFO,"\n\nSUMMARY INTERLACED ---------------------------------------------\n" );
#if ENABLE_QPA
    m_gcAnalyzeAll_in.printOut( 'a', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, printRprPSNR, bitDepths, useWPSNR );
#else
    m_gcAnalyzeAll_in.printOut('a', chFmt, printMSEBasedSNR, printSequenceMSE, printHexPsnr, bitDepths);
#endif
    if (!m_pcCfg->getSummaryOutFilename().empty())
    {
      m_gcAnalyzeAll_in.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryOutFilename());
#if WCG_WPSNR
      if (useLumaWPSNR)
      {
        m_gcAnalyzeWPSNR.printSummary(chFmt, printSequenceMSE, printHexPsnr, bitDepths, m_pcCfg->getSummaryOutFilename());
      }
#endif
    }
  }

  msg( DETAILS,"\nRVM: %.3lf\n", xCalculateRVM() );
}

#if W0038_DB_OPT
uint64_t EncGOP::preLoopFilterPicAndCalcDist( Picture* pcPic )
{
  CodingStructure& cs = *pcPic->cs;
  m_pcLoopFilter->loopFilterPic( cs );

  const CPelUnitBuf picOrg = pcPic->getRecoBuf();
  const CPelUnitBuf picRec = cs.getRecoBuf();

  uint64_t uiDist = 0;
  for( uint32_t comp = 0; comp < (uint32_t)picRec.bufs.size(); comp++)
  {
    const ComponentID compID = ComponentID(comp);
    const uint32_t rshift = 2 * DISTORTION_PRECISION_ADJUSTMENT(cs.sps->getBitDepth(toChannelType(compID)));
#if ENABLE_QPA
    CHECK( rshift >= 8, "shifts greater than 7 are not supported." );
#endif
    uiDist += xFindDistortionPlane( picOrg.get(compID), picRec.get(compID), rshift );
  }
  return uiDist;
}
#endif

// ====================================================================================================================
// Protected member functions
// ====================================================================================================================
void EncGOP::xInitGOP( int iPOCLast, int iNumPicRcvd, bool isField
  , bool isEncodeLtRef
)
{
  CHECK(!( iNumPicRcvd > 0 ), "Unspecified error");
  //  Exception for the first frames
  if ((isField && (iPOCLast == 0 || iPOCLast == 1)) || (!isField && (iPOCLast == 0)) || isEncodeLtRef)
  {
    m_iGopSize    = 1;
  }
  else
  {
    m_iGopSize    = m_pcCfg->getGOPSize();
  }
  CHECK(!(m_iGopSize > 0), "Unspecified error");

  return;
}


void EncGOP::xGetBuffer( PicList&                  rcListPic,
                         std::list<PelUnitBuf*>&   rcListPicYuvRecOut,
                         int                       iNumPicRcvd,
                         int                       iTimeOffset,
                         Picture*&                 rpcPic,
                         int                       pocCurr,
                         bool                      isField )
{
  int i;
  //  Rec. output
  std::list<PelUnitBuf*>::iterator     iterPicYuvRec = rcListPicYuvRecOut.end();

  if (isField && pocCurr > 1 && m_iGopSize!=1)
  {
    iTimeOffset--;
  }

  int multipleFactor = m_pcCfg->getUseCompositeRef() ? 2 : 1;
  for (i = 0; i < (iNumPicRcvd * multipleFactor - iTimeOffset + 1); i += multipleFactor)
  {
    iterPicYuvRec--;
  }

  //  Current pic.
  PicList::iterator        iterPic       = rcListPic.begin();
  while (iterPic != rcListPic.end())
  {
    rpcPic = *(iterPic);
    if( rpcPic->getPOC() == pocCurr && rpcPic->layerId == m_pcEncLib->getLayerId() )
    {
      break;
    }
    iterPic++;
  }

  CHECK(!(rpcPic != NULL), "Unspecified error");
  CHECK(!(rpcPic->getPOC() == pocCurr), "Unspecified error");

  (**iterPicYuvRec) = rpcPic->getRecoBuf();
  return;
}

#if ENABLE_QPA

#ifndef BETA
  #define BETA 0.5 // value between 0.0 and 1; use 0.0 to obtain traditional PSNR
#endif

static inline double calcWeightedSquaredError(const CPelBuf& org,        const CPelBuf& rec,
                                              double &sumAct,            const uint32_t bitDepth,
                                              const uint32_t imageWidth, const uint32_t imageHeight,
                                              const uint32_t offsetX,    const uint32_t offsetY,
                                              int blockWidth,            int blockHeight)
{
  const int    O = org.stride;
  const int    R = rec.stride;
  const Pel   *o = org.bufAt(offsetX, offsetY);
  const Pel   *r = rec.bufAt(offsetX, offsetY);
  const int yAct = offsetY > 0 ? 0 : 1;
  const int xAct = offsetX > 0 ? 0 : 1;

  if (offsetY + (uint32_t)blockHeight > imageHeight) blockHeight = imageHeight - offsetY;
  if (offsetX + (uint32_t)blockWidth  > imageWidth ) blockWidth  = imageWidth  - offsetX;

  const int hAct = offsetY + (uint32_t)blockHeight < imageHeight ? blockHeight : blockHeight - 1;
  const int wAct = offsetX + (uint32_t)blockWidth  < imageWidth  ? blockWidth  : blockWidth  - 1;
  uint64_t ssErr = 0; // sum of squared diffs
  uint64_t saAct = 0; // sum of abs. activity
  double msAct;
  int x, y;

  // calculate image differences and activity
  for (y = 0; y < blockHeight; y++)  // error
  {
    for (x = 0; x < blockWidth; x++)
    {
      const     int64_t iDiff = (int64_t)o[y*O + x] - (int64_t)r[y*R + x];
      ssErr += uint64_t(iDiff * iDiff);
    }
  }
  if (wAct <= xAct || hAct <= yAct) return (double)ssErr;

  for (y = yAct; y < hAct; y++)   // activity
  {
    for (x = xAct; x < wAct; x++)
    {
      const int f = 12 * (int)o[y*O + x] - 2 * ((int)o[y*O + x-1] + (int)o[y*O + x+1] + (int)o[(y-1)*O + x] + (int)o[(y+1)*O + x])
                       - (int)o[(y-1)*O + x-1] - (int)o[(y-1)*O + x+1] - (int)o[(y+1)*O + x-1] - (int)o[(y+1)*O + x+1];
      saAct += abs(f);
    }
  }

  // calculate weight (mean squared activity)
  msAct = (double)saAct / (double(wAct - xAct) * double(hAct - yAct));

  // lower limit, accounts for high-pass gain
  if (msAct < double(1 << (bitDepth - 4))) msAct = double(1 << (bitDepth - 4));

  msAct *= msAct; // because ssErr is squared

  sumAct += msAct; // includes high-pass gain

  // calculate activity weighted error square
  return (double)ssErr * pow(msAct, -1.0 * BETA);
}
#endif // ENABLE_QPA

uint64_t EncGOP::xFindDistortionPlane(const CPelBuf& pic0, const CPelBuf& pic1, const uint32_t rshift
#if ENABLE_QPA
                                    , const uint32_t chromaShiftHor /*= 0*/, const uint32_t chromaShiftVer /*= 0*/
#endif
                                      )
{
  uint64_t uiTotalDiff;
  const  Pel*  pSrc0 = pic0.bufAt(0, 0);
  const  Pel*  pSrc1 = pic1.bufAt(0, 0);

  CHECK(pic0.width  != pic1.width , "Unspecified error");
  CHECK(pic0.height != pic1.height, "Unspecified error");

  if( rshift > 0 )
  {
#if ENABLE_QPA
    const   uint32_t  BD = rshift;      // image bit-depth
    if (BD >= 8)
    {
      const uint32_t   W = pic0.width;  // image width
      const uint32_t   H = pic0.height; // image height
      const double     R = double(W * H) / (1920.0 * 1080.0);
      const uint32_t   B = Clip3<uint32_t>(0, 128 >> chromaShiftVer, 4 * uint32_t(16.0 * sqrt(R) + 0.5)); // WPSNR block size in integer multiple of 4 (for SIMD, = 64 at full-HD)

      uint32_t x, y;

      if (B < 4) // image is too small to use WPSNR, resort to traditional PSNR
      {
        uiTotalDiff = 0;
        for (y = 0; y < H; y++)
        {
          for (x = 0; x < W; x++)
          {
            const           int64_t iDiff = (int64_t)pSrc0[x] - (int64_t)pSrc1[x];
            uiTotalDiff += uint64_t(iDiff * iDiff);
          }
          pSrc0 += pic0.stride;
          pSrc1 += pic1.stride;
        }
        return uiTotalDiff;
      }

      double wmse = 0.0, sumAct = 0.0; // compute activity normalized SNR value

      for (y = 0; y < H; y += B)
      {
        for (x = 0; x < W; x += B)
        {
          wmse += calcWeightedSquaredError(pic1,   pic0,
                                           sumAct, BD,
                                           W,      H,
                                           x,      y,
                                           B,      B);
        }
      }

      // integer weighted distortion
      sumAct = 16.0 * sqrt ((3840.0 * 2160.0) / double((W << chromaShiftHor) * (H << chromaShiftVer))) * double(1 << BD);

      return (wmse <= 0.0) ? 0 : uint64_t(wmse * pow(sumAct, BETA) + 0.5);
    }
#endif // ENABLE_QPA
    uiTotalDiff = 0;
    for (int y = 0; y < pic0.height; y++)
    {
      for (int x = 0; x < pic0.width; x++)
      {
        Intermediate_Int iTemp = pSrc0[x] - pSrc1[x];
        uiTotalDiff += uint64_t((iTemp * iTemp) >> rshift);
      }
      pSrc0 += pic0.stride;
      pSrc1 += pic1.stride;
    }
  }
  else
  {
    uiTotalDiff = 0;
    for (int y = 0; y < pic0.height; y++)
    {
      for (int x = 0; x < pic0.width; x++)
      {
        Intermediate_Int iTemp = pSrc0[x] - pSrc1[x];
        uiTotalDiff += uint64_t(iTemp * iTemp);
      }
      pSrc0 += pic0.stride;
      pSrc1 += pic1.stride;
    }
  }

  return uiTotalDiff;
}
#if WCG_WPSNR
double EncGOP::xFindDistortionPlaneWPSNR(const CPelBuf& pic0, const CPelBuf& pic1, const uint32_t rshift, const CPelBuf& picLuma0,
  ComponentID compID, const ChromaFormat chfmt    )
{
  const bool    useLumaWPSNR = m_pcEncLib->getLumaLevelToDeltaQPMapping().isEnabled() || (m_pcCfg->getLmcs() && m_pcCfg->getReshapeSignalType() == RESHAPE_SIGNAL_PQ);
  if (!useLumaWPSNR)
  {
    return 0;
  }

  double uiTotalDiffWPSNR;
  const  Pel*  pSrc0 = pic0.bufAt(0, 0);
  const  Pel*  pSrc1 = pic1.bufAt(0, 0);
  const  Pel*  pSrcLuma = picLuma0.bufAt(0, 0);
  CHECK(pic0.width  != pic1.width , "Unspecified error");
  CHECK(pic0.height != pic1.height, "Unspecified error");

  if( rshift > 0 )
  {
    uiTotalDiffWPSNR = 0;
    for (int y = 0; y < pic0.height; y++)
    {
      for (int x = 0; x < pic0.width; x++)
      {
        Intermediate_Int iTemp = pSrc0[x] - pSrc1[x];
        double dW = m_pcEncLib->getRdCost()->getWPSNRLumaLevelWeight(pSrcLuma[(x << getComponentScaleX(compID, chfmt))]);
        uiTotalDiffWPSNR += ((dW * (double)iTemp * (double)iTemp)) * (double)(1 >> rshift);
      }
      pSrc0 += pic0.stride;
      pSrc1 += pic1.stride;
      pSrcLuma += picLuma0.stride << getComponentScaleY(compID, chfmt);
    }
  }
  else
  {
    uiTotalDiffWPSNR = 0;
    for (int y = 0; y < pic0.height; y++)
    {
      for (int x = 0; x < pic0.width; x++)
      {
        Intermediate_Int iTemp = pSrc0[x] - pSrc1[x];
        double dW = m_pcEncLib->getRdCost()->getWPSNRLumaLevelWeight(pSrcLuma[x << getComponentScaleX(compID, chfmt)]);
        uiTotalDiffWPSNR += dW * (double)iTemp * (double)iTemp;
      }
      pSrc0 += pic0.stride;
      pSrc1 += pic1.stride;
      pSrcLuma += picLuma0.stride << getComponentScaleY(compID, chfmt);
    }
  }

  return uiTotalDiffWPSNR;
}
#endif

void EncGOP::xCalculateAddPSNRs( const bool isField, const bool isFieldTopFieldFirst, const int iGOPid, Picture* pcPic, const AccessUnit&accessUnit, PicList &rcListPic, const int64_t dEncTime, const InputColourSpaceConversion snr_conversion, const bool printFrameMSE, double* PSNR_Y
                               , bool isEncodeLtRef
)
{
  xCalculateAddPSNR(pcPic, pcPic->getRecoBuf(), accessUnit, (double)dEncTime, snr_conversion, printFrameMSE, PSNR_Y
                  , isEncodeLtRef
  );

  //In case of field coding, compute the interlaced PSNR for both fields
  if(isField)
  {
    bool bothFieldsAreEncoded = false;
    int correspondingFieldPOC = pcPic->getPOC();
    int currentPicGOPPoc = m_pcCfg->getGOPEntry(iGOPid).m_POC;
    if(pcPic->getPOC() == 0)
    {
      // particular case for POC 0 and 1.
      // If they are not encoded first and separately from other pictures, we need to change this
      // POC 0 is always encoded first then POC 1 is encoded
      bothFieldsAreEncoded = false;
    }
    else if(pcPic->getPOC() == 1)
    {
      // if we are at POC 1, POC 0 has been encoded for sure
      correspondingFieldPOC = 0;
      bothFieldsAreEncoded = true;
    }
    else
    {
      if(pcPic->getPOC()%2 == 1)
      {
        correspondingFieldPOC -= 1; // all odd POC are associated with the preceding even POC (e.g poc 1 is associated to poc 0)
        currentPicGOPPoc      -= 1;
      }
      else
      {
        correspondingFieldPOC += 1; // all even POC are associated with the following odd POC (e.g poc 0 is associated to poc 1)
        currentPicGOPPoc      += 1;
      }
      for(int i = 0; i < m_iGopSize; i ++)
      {
        if(m_pcCfg->getGOPEntry(i).m_POC == currentPicGOPPoc)
        {
          bothFieldsAreEncoded = m_pcCfg->getGOPEntry(i).m_isEncoded;
          break;
        }
      }
    }

    if(bothFieldsAreEncoded)
    {
      //get complementary top field
      PicList::iterator   iterPic = rcListPic.begin();
      while ((*iterPic)->getPOC() != correspondingFieldPOC)
      {
        iterPic ++;
      }
      Picture* correspondingFieldPic = *(iterPic);

      if ((pcPic->topField && isFieldTopFieldFirst) || (!pcPic->topField && !isFieldTopFieldFirst))
      {
        xCalculateInterlacedAddPSNR(pcPic, correspondingFieldPic, pcPic->getRecoBuf(), correspondingFieldPic->getRecoBuf(), snr_conversion, printFrameMSE, PSNR_Y
          , isEncodeLtRef
        );
      }
      else
      {
        xCalculateInterlacedAddPSNR(correspondingFieldPic, pcPic, correspondingFieldPic->getRecoBuf(), pcPic->getRecoBuf(), snr_conversion, printFrameMSE, PSNR_Y
          , isEncodeLtRef
        );
      }
    }
  }
}

void EncGOP::xCalculateAddPSNR(Picture* pcPic, PelUnitBuf cPicD, const AccessUnit& accessUnit, double dEncTime, const InputColourSpaceConversion conversion, const bool printFrameMSE, double* PSNR_Y
                              , bool isEncodeLtRef
)
{
  const SPS&         sps = *pcPic->cs->sps;
  const CPelUnitBuf& pic = cPicD;
  CHECK(!(conversion == IPCOLOURSPACE_UNCHANGED), "Unspecified error");
//  const CPelUnitBuf& org = (conversion != IPCOLOURSPACE_UNCHANGED) ? pcPic->getPicYuvTrueOrg()->getBuf() : pcPic->getPicYuvOrg()->getBuf();
  const CPelUnitBuf& org = (sps.getUseLmcs() || m_pcCfg->getGopBasedTemporalFilterEnabled()) ? pcPic->getTrueOrigBuf() : pcPic->getOrigBuf();
#if ENABLE_QPA
  const bool    useWPSNR = m_pcEncLib->getUseWPSNR();
#endif
  double  dPSNR[MAX_NUM_COMPONENT];
#if WCG_WPSNR
  const bool    useLumaWPSNR = m_pcEncLib->getLumaLevelToDeltaQPMapping().isEnabled() || (m_pcCfg->getLmcs() && m_pcCfg->getReshapeSignalType() == RESHAPE_SIGNAL_PQ);
  double  dPSNRWeighted[MAX_NUM_COMPONENT];
  double  MSEyuvframeWeighted[MAX_NUM_COMPONENT];
#endif
  double  upscaledPSNR[MAX_NUM_COMPONENT];
  for(int i=0; i<MAX_NUM_COMPONENT; i++)
  {
    dPSNR[i]=0.0;
#if WCG_WPSNR
    dPSNRWeighted[i]=0.0;
    MSEyuvframeWeighted[i] = 0.0;
#endif
    upscaledPSNR[i] = 0.0;
  }
#if JVET_O0756_CALCULATE_HDRMETRICS
  double deltaE[hdrtoolslib::NB_REF_WHITE];
  double psnrL[hdrtoolslib::NB_REF_WHITE];
  for (int i=0; i<hdrtoolslib::NB_REF_WHITE; i++)
  {
    deltaE[i] = 0.0;
    psnrL[i] = 0.0;
  }
#endif

  PelStorage interm;

  if (conversion != IPCOLOURSPACE_UNCHANGED)
  {
    interm.create(pic.chromaFormat, Area(Position(), pic.Y()));
    VideoIOYuv::ColourSpaceConvert(pic, interm, conversion, false);
  }

  const CPelUnitBuf& picC = (conversion == IPCOLOURSPACE_UNCHANGED) ? pic : interm;

  //===== calculate PSNR =====
  double MSEyuvframe[MAX_NUM_COMPONENT] = {0, 0, 0};
  const ChromaFormat formatD = pic.chromaFormat;
  const ChromaFormat format  = sps.getChromaFormatIdc();

  const bool bPicIsField     = pcPic->fieldPic;
  const Slice*  pcSlice      = pcPic->slices[0];

  PelStorage upscaledRec;

  if( m_pcEncLib->isRPREnabled() )
  {
    const CPelBuf& upscaledOrg = sps.getUseLmcs() ? pcPic->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT).get( COMPONENT_Y ) : pcPic->M_BUFS( 0, PIC_ORIGINAL_INPUT).get( COMPONENT_Y );
    upscaledRec.create( pic.chromaFormat, Area( Position(), upscaledOrg ) );

    int xScale, yScale;
    // it is assumed that full resolution picture PPS has ppsId 0
    const PPS* pps = m_pcEncLib->getPPS(0);
    CU::getRprScaling( &sps, pps, pcPic, xScale, yScale );
    std::pair<int, int> scalingRatio = std::pair<int, int>( xScale, yScale );

    Picture::rescalePicture( scalingRatio, picC, pcPic->getScalingWindow(), upscaledRec, pps->getScalingWindow(), format, sps.getBitDepths(), false, false, sps.getHorCollocatedChromaFlag(), sps.getVerCollocatedChromaFlag() );
  }

  for (int comp = 0; comp < ::getNumberValidComponents(formatD); comp++)
  {
    const ComponentID compID = ComponentID(comp);
    const CPelBuf&    p = picC.get(compID);
    const CPelBuf&    o = org.get(compID);

    CHECK(!( p.width  == o.width), "Unspecified error");
    CHECK(!( p.height == o.height), "Unspecified error");

    int padX = m_pcEncLib->getPad( 0 );
    int padY = m_pcEncLib->getPad( 1 );

    // when RPR is enabled, picture padding is picture specific due to possible different picture resoluitons, however only full resolution padding is stored in EncLib
    // get per picture padding from the conformance window, in this case if conformance window is set not equal to the padding then PSNR results may be inaccurate
    if( m_pcEncLib->isRPREnabled() )
    {
      Window& conf = pcPic->getConformanceWindow();
      padX = conf.getWindowRightOffset() * SPS::getWinUnitX( format );
      padY = conf.getWindowBottomOffset() * SPS::getWinUnitY( format );
    }

    const uint32_t width = p.width - ( padX >> ::getComponentScaleX( compID, format ) );
    const uint32_t height = p.height - ( padY >> ( !!bPicIsField + ::getComponentScaleY( compID, format ) ) );

    // create new buffers with correct dimensions
    const CPelBuf recPB(p.bufAt(0, 0), p.stride, width, height);
    const CPelBuf orgPB(o.bufAt(0, 0), o.stride, width, height);
    const uint32_t    bitDepth = sps.getBitDepth(toChannelType(compID));
#if ENABLE_QPA
    const uint64_t uiSSDtemp = xFindDistortionPlane(recPB, orgPB, useWPSNR ? bitDepth : 0, ::getComponentScaleX(compID, format), ::getComponentScaleY(compID, format));
#else
    const uint64_t uiSSDtemp = xFindDistortionPlane(recPB, orgPB, 0);
#endif
    const uint32_t maxval = 255 << (bitDepth - 8);
    const uint32_t size   = width * height;
    const double fRefValue = (double)maxval * maxval * size;
    dPSNR[comp]       = uiSSDtemp ? 10.0 * log10(fRefValue / (double)uiSSDtemp) : 999.99;
    MSEyuvframe[comp] = (double)uiSSDtemp / size;
#if WCG_WPSNR
    const double uiSSDtempWeighted = xFindDistortionPlaneWPSNR(recPB, orgPB, 0, org.get(COMPONENT_Y), compID, format);
    if (useLumaWPSNR)
    {
      dPSNRWeighted[comp] = uiSSDtempWeighted ? 10.0 * log10(fRefValue / (double)uiSSDtempWeighted) : 999.99;
      MSEyuvframeWeighted[comp] = (double)uiSSDtempWeighted / size;
    }
#endif

    if( m_pcEncLib->isRPREnabled() )
    {
      const CPelBuf& upscaledOrg = sps.getUseLmcs() ? pcPic->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT ).get( compID ) : pcPic->M_BUFS( 0, PIC_ORIGINAL_INPUT ).get( compID );

      const uint32_t upscaledWidth = upscaledOrg.width - ( m_pcEncLib->getPad( 0 ) >> ::getComponentScaleX( compID, format ) );
      const uint32_t upscaledHeight = upscaledOrg.height - ( m_pcEncLib->getPad( 1 ) >> ( !!bPicIsField + ::getComponentScaleY( compID, format ) ) );

      // create new buffers with correct dimensions
      const CPelBuf upscaledRecPB( upscaledRec.get( compID ).bufAt( 0, 0 ), upscaledRec.get( compID ).stride, upscaledWidth, upscaledHeight );
      const CPelBuf upscaledOrgPB( upscaledOrg.bufAt( 0, 0 ), upscaledOrg.stride, upscaledWidth, upscaledHeight );

#if ENABLE_QPA
      const uint64_t upscaledSSD = xFindDistortionPlane( upscaledRecPB, upscaledOrgPB, useWPSNR ? bitDepth : 0, ::getComponentScaleX( compID, format ) );
#else
      const uint64_t scaledSSD = xFindDistortionPlane( upsacledRecPB, upsacledOrgPB, 0 );
#endif

      upscaledPSNR[comp] = upscaledSSD ? 10.0 * log10( (double)maxval * maxval * upscaledWidth * upscaledHeight / (double)upscaledSSD ) : 999.99;
    }
  }

#if EXTENSION_360_VIDEO
  m_ext360.calculatePSNRs(pcPic);
#endif

#if JVET_O0756_CALCULATE_HDRMETRICS
  const bool calculateHdrMetrics = m_pcEncLib->getCalcluateHdrMetrics();
  if (calculateHdrMetrics)
  {
    auto beforeTime = std::chrono::steady_clock::now();
    xCalculateHDRMetrics(pcPic, deltaE, psnrL);
    auto elapsed = std::chrono::steady_clock::now() - beforeTime;
    m_metricTime += elapsed;
  }
#endif

  /* calculate the size of the access unit, excluding:
   *  - any AnnexB contributions (start_code_prefix, zero_byte, etc.,)
   *  - SEI NAL units
   */
  uint32_t numRBSPBytes = 0;
  for (AccessUnit::const_iterator it = accessUnit.begin(); it != accessUnit.end(); it++)
  {
    uint32_t numRBSPBytes_nal = uint32_t((*it)->m_nalUnitData.str().size());
    if (m_pcCfg->getSummaryVerboseness() > 0)
    {
      msg( NOTICE, "*** %6s numBytesInNALunit: %u\n", nalUnitTypeToString((*it)->m_nalUnitType), numRBSPBytes_nal);
    }
    if( ( *it )->m_nalUnitType != NAL_UNIT_PREFIX_SEI && ( *it )->m_nalUnitType != NAL_UNIT_SUFFIX_SEI )
    {
      numRBSPBytes += numRBSPBytes_nal;
      if (it == accessUnit.begin() || (*it)->m_nalUnitType == NAL_UNIT_VPS || (*it)->m_nalUnitType == NAL_UNIT_DPS || (*it)->m_nalUnitType == NAL_UNIT_SPS || (*it)->m_nalUnitType == NAL_UNIT_PPS)
      {
        numRBSPBytes += 4;
      }
      else
      {
        numRBSPBytes += 3;
      }
    }
  }

  uint32_t uibits = numRBSPBytes * 8;
  m_vRVM_RP.push_back( uibits );

  //===== add PSNR =====
  m_gcAnalyzeAll.addResult(dPSNR, (double)uibits, MSEyuvframe
    , upscaledPSNR
    , isEncodeLtRef
  );
#if EXTENSION_360_VIDEO
  m_ext360.addResult(m_gcAnalyzeAll);
#endif
#if JVET_O0756_CALCULATE_HDRMETRICS
  if (calculateHdrMetrics)
  {
    m_gcAnalyzeAll.addHDRMetricsResult(deltaE, psnrL);
  }
#endif
  if (pcSlice->isIntra())
  {
    m_gcAnalyzeI.addResult(dPSNR, (double)uibits, MSEyuvframe
      , upscaledPSNR
      , isEncodeLtRef
    );
    *PSNR_Y = dPSNR[COMPONENT_Y];
#if EXTENSION_360_VIDEO
    m_ext360.addResult(m_gcAnalyzeI);
#endif
#if JVET_O0756_CALCULATE_HDRMETRICS
    if (calculateHdrMetrics)
    {
      m_gcAnalyzeI.addHDRMetricsResult(deltaE, psnrL);
    }
#endif
  }
  if (pcSlice->isInterP())
  {
    m_gcAnalyzeP.addResult(dPSNR, (double)uibits, MSEyuvframe
      , upscaledPSNR
      , isEncodeLtRef
    );
    *PSNR_Y = dPSNR[COMPONENT_Y];
#if EXTENSION_360_VIDEO
    m_ext360.addResult(m_gcAnalyzeP);
#endif
#if JVET_O0756_CALCULATE_HDRMETRICS
    if (calculateHdrMetrics)
    {
      m_gcAnalyzeP.addHDRMetricsResult(deltaE, psnrL);
    }
#endif
  }
  if (pcSlice->isInterB())
  {
    m_gcAnalyzeB.addResult(dPSNR, (double)uibits, MSEyuvframe
      , upscaledPSNR
      , isEncodeLtRef
    );
    *PSNR_Y = dPSNR[COMPONENT_Y];
#if EXTENSION_360_VIDEO
    m_ext360.addResult(m_gcAnalyzeB);
#endif
#if JVET_O0756_CALCULATE_HDRMETRICS
    if (calculateHdrMetrics)
    {
      m_gcAnalyzeB.addHDRMetricsResult(deltaE, psnrL);
    }
#endif
  }
#if WCG_WPSNR
  if (useLumaWPSNR)
  {
    m_gcAnalyzeWPSNR.addResult( dPSNRWeighted, (double)uibits, MSEyuvframeWeighted, upscaledPSNR, isEncodeLtRef );
  }