EncGOP.cpp

    if ( pcSlice->getSliceType() == B_SLICE)
    {
      if ( pcSlice->getNumRefIdx(RefPicList( 0 ) ) == pcSlice->getNumRefIdx(RefPicList( 1 ) ) )
      {
        bGPBcheck=true;
        int i;
        for ( i=0; i < pcSlice->getNumRefIdx(RefPicList( 1 ) ); i++ )
        {
          if ( pcSlice->getRefPOC(RefPicList(1), i) != pcSlice->getRefPOC(RefPicList(0), i) )
          {
            bGPBcheck=false;
            break;
          }
        }
      }
    }
    if(bGPBcheck)
    {
      picHeader->setMvdL1ZeroFlag(true);
    }
    else
    {
      picHeader->setMvdL1ZeroFlag(false);
    }

    if ( pcSlice->getSPS()->getUseSMVD() && pcSlice->getCheckLDC() == false
      && picHeader->getMvdL1ZeroFlag() == false
      )
    {
      int currPOC = pcSlice->getPOC();

      int forwardPOC = currPOC;
      int backwardPOC = currPOC;
      int ref = 0, refIdx0 = -1, refIdx1 = -1;

      // search nearest forward POC in List 0
      for ( ref = 0; ref < pcSlice->getNumRefIdx( REF_PIC_LIST_0 ); ref++ )
      {
        int poc = pcSlice->getRefPic( REF_PIC_LIST_0, ref )->getPOC();
        const bool isRefLongTerm = pcSlice->getRefPic(REF_PIC_LIST_0, ref)->longTerm;
        if ( poc < currPOC && (poc > forwardPOC || refIdx0 == -1) && !isRefLongTerm )
        {
          forwardPOC = poc;
          refIdx0 = ref;
        }
      }

      // search nearest backward POC in List 1
      for ( ref = 0; ref < pcSlice->getNumRefIdx( REF_PIC_LIST_1 ); ref++ )
      {
        int poc = pcSlice->getRefPic( REF_PIC_LIST_1, ref )->getPOC();
        const bool isRefLongTerm = pcSlice->getRefPic(REF_PIC_LIST_1, ref)->longTerm;
        if ( poc > currPOC && (poc < backwardPOC || refIdx1 == -1) && !isRefLongTerm )
        {
          backwardPOC = poc;
          refIdx1 = ref;
        }
      }

      if ( !(forwardPOC < currPOC && backwardPOC > currPOC) )
      {
        forwardPOC = currPOC;
        backwardPOC = currPOC;
        refIdx0 = -1;
        refIdx1 = -1;

        // search nearest backward POC in List 0
        for ( ref = 0; ref < pcSlice->getNumRefIdx( REF_PIC_LIST_0 ); ref++ )
        {
          int poc = pcSlice->getRefPic( REF_PIC_LIST_0, ref )->getPOC();
          const bool isRefLongTerm = pcSlice->getRefPic(REF_PIC_LIST_0, ref)->longTerm;
          if ( poc > currPOC && (poc < backwardPOC || refIdx0 == -1) && !isRefLongTerm )
          {
            backwardPOC = poc;
            refIdx0 = ref;
          }
        }

        // search nearest forward POC in List 1
        for ( ref = 0; ref < pcSlice->getNumRefIdx( REF_PIC_LIST_1 ); ref++ )
        {
          int poc = pcSlice->getRefPic( REF_PIC_LIST_1, ref )->getPOC();
          const bool isRefLongTerm = pcSlice->getRefPic(REF_PIC_LIST_1, ref)->longTerm;
          if ( poc < currPOC && (poc > forwardPOC || refIdx1 == -1) && !isRefLongTerm )
          {
            forwardPOC = poc;
            refIdx1 = ref;
          }
        }
      }

      if ( forwardPOC < currPOC && backwardPOC > currPOC )
      {
        pcSlice->setBiDirPred( true, refIdx0, refIdx1 );
      }
      else
      {
        pcSlice->setBiDirPred( false, -1, -1 );
      }
    }
    else
    {
      pcSlice->setBiDirPred( false, -1, -1 );
    }
#if JVET_Y0128_NON_CTC
    pcSlice->checkBMAvailability(pcSlice);
    pcSlice->checkAmvpMergeModeAvailability(pcSlice);
#endif
#if JVET_Z0054_BLK_REF_PIC_REORDER
    if (pcSlice->getSPS()->getUseARL())
    {
      pcSlice->generateCombinedList();
      pcSlice->generateRefPicPairList();
    }
#endif

    double lambda            = 0.0;
    int actualHeadBits       = 0;
    int actualTotalBits      = 0;
    int estimatedBits        = 0;
    int tmpBitsBeforeWriting = 0;

    xPicInitRateControl(estimatedBits, iGOPid, lambda, pcPic, pcSlice);

    uint32_t uiNumSliceSegments = 1;

    {
      pcSlice->setDefaultClpRng( *pcSlice->getSPS() );
    }

    // Allocate some coders, now the number of tiles are known.
    const uint32_t numberOfCtusInFrame = pcPic->cs->pcv->sizeInCtus;
    const int numSubstreamsColumns = pcSlice->getPPS()->getNumTileColumns();
    const int numSubstreamRows     = pcSlice->getSPS()->getEntropyCodingSyncEnabledFlag() ? pcPic->cs->pcv->heightInCtus : (pcSlice->getPPS()->getNumTileRows());
    const int numSubstreams        = std::max<int> (numSubstreamRows * numSubstreamsColumns, (int) pcPic->cs->pps->getNumSlicesInPic());
    std::vector<OutputBitstream> substreamsOut(numSubstreams);

#if ENABLE_QPA
    pcPic->m_uEnerHpCtu.resize (numberOfCtusInFrame);
    pcPic->m_iOffsetCtu.resize (numberOfCtusInFrame);
#if ENABLE_QPA_SUB_CTU
    if (pcSlice->getPPS()->getUseDQP() && pcSlice->getCuQpDeltaSubdiv() > 0)
    {
      const PreCalcValues &pcv = *pcPic->cs->pcv;
      const unsigned   mtsLog2 = (unsigned)floorLog2(std::min (pcPic->cs->sps->getMaxTbSize(), pcv.maxCUWidth));
      pcPic->m_subCtuQP.resize ((pcv.maxCUWidth >> mtsLog2) * (pcv.maxCUHeight >> mtsLog2));
    }
#endif
#endif
#if JVET_V0094_BILATERAL_FILTER
#if JVET_X0071_CHROMA_BILATERAL_FILTER
    if (pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseBIF() || pcSlice->getPPS()->getUseChromaBIF())
#else
    // BIF happens in SAO code so this needs to be done
    // even if SAO=0 if BIF=1.
    if (pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseBIF() )
#endif
#else
#if JVET_X0071_CHROMA_BILATERAL_FILTER
    if (pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseChromaBIF())
#else
    if (pcSlice->getSPS()->getSAOEnabledFlag())
#endif
#endif
    {
      pcPic->resizeSAO( numberOfCtusInFrame, 0 );
      pcPic->resizeSAO( numberOfCtusInFrame, 1 );
    }

    // it is used for signalling during CTU mode decision, i.e. before ALF processing
    if( pcSlice->getSPS()->getALFEnabledFlag() )
    {
      pcPic->resizeAlfCtuEnableFlag( numberOfCtusInFrame );
      pcPic->resizeAlfCtuAlternative( numberOfCtusInFrame );
      pcPic->resizeAlfCtbFilterIndex(numberOfCtusInFrame);
    }

    bool decPic = false;
    bool encPic = false;
    // test if we can skip the picture entirely or decode instead of encoding
    trySkipOrDecodePicture( decPic, encPic, *m_pcCfg, pcPic, m_pcEncLib->getApsMap() );

    pcPic->cs->slice = pcSlice; // please keep this
#if ENABLE_QPA
    if (pcSlice->getPPS()->getSliceChromaQpFlag() && CS::isDualITree (*pcSlice->getPic()->cs) && !m_pcCfg->getUsePerceptQPA() && (m_pcCfg->getSliceChromaOffsetQpPeriodicity() == 0))
#else
    if (pcSlice->getPPS()->getSliceChromaQpFlag() && CS::isDualITree (*pcSlice->getPic()->cs))
#endif
    {
#if JVET_AC0096
      if (!(pcSlice->getPPS()->getPPSId() == ENC_PPS_ID_RPR || pcSlice->getPPS()->getPPSId() == ENC_PPS_ID_RPR2 || pcSlice->getPPS()->getPPSId() == ENC_PPS_ID_RPR3))
      {
#endif
        // overwrite chroma qp offset for dual tree
        pcSlice->setSliceChromaQpDelta(COMPONENT_Cb, m_pcCfg->getChromaCbQpOffsetDualTree());
        pcSlice->setSliceChromaQpDelta(COMPONENT_Cr, m_pcCfg->getChromaCrQpOffsetDualTree());
        if (pcSlice->getSPS()->getJointCbCrEnabledFlag())
        {
          pcSlice->setSliceChromaQpDelta(JOINT_CbCr, m_pcCfg->getChromaCbCrQpOffsetDualTree());
        }
        m_pcSliceEncoder->setUpLambda(pcSlice, pcSlice->getLambdas()[0], pcSlice->getSliceQp());
#if JVET_AC0096
      }
#endif
    }

    xPicInitLMCS(pcPic, picHeader, pcSlice);

    if( pcSlice->getSPS()->getScalingListFlag() && m_pcCfg->getUseScalingListId() == SCALING_LIST_FILE_READ )
    {
      picHeader->setExplicitScalingListEnabledFlag( true );
      pcSlice->setExplicitScalingListUsed( true );

      int apsId = std::min<int>( 7, m_pcEncLib->getVPS() == nullptr ? 0 : m_pcEncLib->getVPS()->getGeneralLayerIdx( m_pcEncLib->getLayerId() ) );
      picHeader->setScalingListAPSId( apsId );

      ParameterSetMap<APS> *apsMap = m_pcEncLib->getApsMap();
      APS*  scalingListAPS = apsMap->getPS( ( apsId << NUM_APS_TYPE_LEN ) + SCALING_LIST_APS );
      assert( scalingListAPS != NULL );
      picHeader->setScalingListAPS( scalingListAPS );
    }

    pcPic->cs->picHeader->setPic(pcPic);
    pcPic->cs->picHeader->setValid();
    if(pcPic->cs->sps->getFpelMmvdEnabledFlag())
    {
      // cannot set ph_fpel_mmvd_enabled_flag at slice level - need new picture-level version of checkDisFracMmvd algorithm?
      // m_pcSliceEncoder->checkDisFracMmvd( pcPic, 0, numberOfCtusInFrame );
      bool useIntegerMVD = (pcPic->lwidth()*pcPic->lheight() > 1920 * 1080);
      pcPic->cs->picHeader->setDisFracMMVD( useIntegerMVD );
    }
    if (pcSlice->getSPS()->getJointCbCrEnabledFlag())
    {
      m_pcSliceEncoder->setJointCbCrModes(*pcPic->cs, Position(0, 0), pcPic->cs->area.lumaSize());
    }
    if( encPic )
    // now compress (trial encode) the various slice segments (slices, and dependent slices)
    {
      DTRACE_UPDATE( g_trace_ctx, ( std::make_pair( "poc", pocCurr ) ) );
      const std::vector<uint16_t> sliceLosslessArray = *(m_pcCfg->getSliceLosslessArray());
      bool mixedLossyLossless = m_pcCfg->getMixedLossyLossless();
      if (m_pcCfg->getCostMode() == COST_LOSSLESS_CODING)
      {
        pcPic->fillSliceLossyLosslessArray(sliceLosslessArray, mixedLossyLossless);
      }

      for(uint32_t sliceIdx = 0; sliceIdx < pcPic->cs->pps->getNumSlicesInPic(); sliceIdx++ )
      {
        pcSlice->setSliceMap( pcPic->cs->pps->getSliceMap( sliceIdx ) );
        if( pcPic->cs->pps->getRectSliceFlag() )
        {
          Position firstCtu;
          firstCtu.x = pcSlice->getFirstCtuRsAddrInSlice() % pcPic->cs->pps->getPicWidthInCtu();
          firstCtu.y = pcSlice->getFirstCtuRsAddrInSlice() / pcPic->cs->pps->getPicWidthInCtu();
          int subPicIdx = NOT_VALID;
          for( int sp = 0; sp < pcPic->cs->pps->getNumSubPics(); sp++ )
          {
            if( pcPic->cs->pps->getSubPic( sp ).containsCtu( firstCtu ) )
            {
              subPicIdx = sp;
              break;
            }
          }
          CHECK( subPicIdx == NOT_VALID, "Sub-picture was not found" );

          pcSlice->setSliceSubPicId( pcPic->cs->pps->getSubPic( subPicIdx ).getSubPicID() );
        }
        if (pcPic->cs->sps->getUseLmcs())
        {
          pcSlice->setLmcsEnabledFlag(picHeader->getLmcsEnabledFlag());
          if (pcSlice->getSliceType() == I_SLICE)
          {
            //reshape original signal
            if( m_pcCfg->getGopBasedTemporalFilterEnabled() )
            {
              pcPic->getOrigBuf().copyFrom( pcPic->getFilteredOrigBuf() );
            }
            else
            {
              pcPic->getOrigBuf().copyFrom( pcPic->getTrueOrigBuf() );
            }

            if (pcSlice->getLmcsEnabledFlag())
            {
              pcPic->getOrigBuf(COMPONENT_Y).rspSignal(m_pcReshaper->getFwdLUT());
              m_pcReshaper->setSrcReshaped(true);
              m_pcReshaper->setRecReshaped(true);
            }
            else
            {
              m_pcReshaper->setSrcReshaped(false);
              m_pcReshaper->setRecReshaped(false);
            }
          }
        }

        bool isLossless = false;
        if (m_pcCfg->getCostMode() == COST_LOSSLESS_CODING)
        {
          isLossless = pcPic->losslessSlice(sliceIdx);
        }
        m_pcSliceEncoder->setLosslessSlice(pcPic, isLossless);

#if JVET_S0258_SUBPIC_CONSTRAINTS
        if( pcSlice->getSliceType() != I_SLICE && pcSlice->getRefPic( REF_PIC_LIST_0, 0 )->subPictures.size() > 1 )
#else
        if (pcSlice->getSliceType() != I_SLICE && pcSlice->getRefPic(REF_PIC_LIST_0, 0)->numSubpics > 1)
#endif
        {
          clipMv = clipMvInSubpic;
          m_pcEncLib->getInterSearch()->setClipMvInSubPic(true);
        }
        else
        {
          clipMv = clipMvInPic;
          m_pcEncLib->getInterSearch()->setClipMvInSubPic(false);
        }

        m_pcSliceEncoder->precompressSlice( pcPic );
        m_pcSliceEncoder->compressSlice   ( pcPic, false, false );

        if(sliceIdx < pcPic->cs->pps->getNumSlicesInPic() - 1)
        {
          uint32_t independentSliceIdx = pcSlice->getIndependentSliceIdx();
          pcPic->allocateNewSlice();
          m_pcSliceEncoder->setSliceSegmentIdx      (uiNumSliceSegments);
          // prepare for next slice
          pcSlice = pcPic->slices[uiNumSliceSegments];
          CHECK(!(pcSlice->getPPS() != 0), "Unspecified error");
          pcSlice->copySliceInfo(pcPic->slices[uiNumSliceSegments - 1]);
          pcSlice->setSliceBits(0);
          independentSliceIdx++;
          pcSlice->setIndependentSliceIdx(independentSliceIdx);
          uiNumSliceSegments++;
        }
      }

      duData.clear();

#if DUMP_BEFORE_INLOOP
      if( m_pcEncLib->getDumpBeforeInloop() )
      {
        static VideoIOYuv ioBeforeInLoop;

        if( pcPic )
        {
          if( !ioBeforeInLoop.isOpen() )
          {
            std::string reconFileName = m_pcEncLib->m_reconFileName;
            size_t pos = reconFileName.find_last_of( '.' );
            if( pos != string::npos )
            {
              reconFileName.insert( pos, "beforeInloop" );
            }
            else
            {
              reconFileName.append( "beforeInloop" );
            }
            const BitDepths &bitDepths = pcPic->cs->sps->getBitDepths();

            ioBeforeInLoop.open( reconFileName, true, bitDepths.recon, bitDepths.recon, bitDepths.recon );
          }

          const Window &conf = pcPic->getConformanceWindow();
          const SPS* sps = pcPic->cs->sps;
          ChromaFormat chromaFormatIDC = sps->getChromaFormatIdc();

          InputColourSpaceConversion outputColourSpaceConvert = IPCOLOURSPACE_UNCHANGED;
          bool packedYUVMode = false;
          bool clipOutputVideoToRec709Range = false;
          if( m_pcCfg->getUpscaledOutput() )
          {
#if JVET_AB0082
            ioBeforeInLoop.writeUpscaledPicture(*sps, *pcPic->cs->pps, pcPic->getRecoBuf(), outputColourSpaceConvert, packedYUVMode, m_pcCfg->getUpscaledOutput(), NUM_CHROMA_FORMAT, clipOutputVideoToRec709Range, m_pcCfg->getUpscaleFilerForDisplay());
#else
            ioBeforeInLoop.writeUpscaledPicture( *sps, *pcPic->cs->pps, pcPic->getRecoBuf(), outputColourSpaceConvert, packedYUVMode, m_pcCfg->getUpscaledOutput(), NUM_CHROMA_FORMAT, clipOutputVideoToRec709Range );
#endif
          }
          else
          {
            ioBeforeInLoop.write( pcPic->getRecoBuf().get( COMPONENT_Y ).width, pcPic->getRecoBuf().get( COMPONENT_Y ).height, pcPic->getRecoBuf(),
              outputColourSpaceConvert,
              packedYUVMode,
              conf.getWindowLeftOffset() * SPS::getWinUnitX( chromaFormatIDC ),
              conf.getWindowRightOffset() * SPS::getWinUnitX( chromaFormatIDC ),
              conf.getWindowTopOffset() * SPS::getWinUnitY( chromaFormatIDC ),
              conf.getWindowBottomOffset() * SPS::getWinUnitY( chromaFormatIDC ),
              NUM_CHROMA_FORMAT, clipOutputVideoToRec709Range );
          }
        }
      }
#endif

#if JVET_Z0118_GDR
      pcPic->setCleanDirty(false); 
#endif

      CodingStructure& cs = *pcPic->cs;
      pcSlice = pcPic->slices[0];

      if (cs.sps->getUseLmcs() && m_pcReshaper->getSliceReshaperInfo().getUseSliceReshaper())
      {
        picHeader->setLmcsEnabledFlag(true);
        int apsId = std::min<int>(3, m_pcEncLib->getVPS() == nullptr ? 0 : m_pcEncLib->getVPS()->getGeneralLayerIdx(m_pcEncLib->getLayerId()));
        picHeader->setLmcsAPSId(apsId);

        const PreCalcValues& pcv = *cs.pcv;
        for (uint32_t yPos = 0; yPos < pcv.lumaHeight; yPos += pcv.maxCUHeight)
        {
          for (uint32_t xPos = 0; xPos < pcv.lumaWidth; xPos += pcv.maxCUWidth)
          {
            const CodingUnit* cu = cs.getCU(Position(xPos, yPos), CHANNEL_TYPE_LUMA);
            if (cu->slice->getLmcsEnabledFlag())
            {
              const uint32_t width = (xPos + pcv.maxCUWidth > pcv.lumaWidth) ? (pcv.lumaWidth - xPos) : pcv.maxCUWidth;
              const uint32_t height = (yPos + pcv.maxCUHeight > pcv.lumaHeight) ? (pcv.lumaHeight - yPos) : pcv.maxCUHeight;
              const UnitArea area(cs.area.chromaFormat, Area(xPos, yPos, width, height));
              cs.getRecoBuf(area).get(COMPONENT_Y).rspSignal(m_pcReshaper->getInvLUT());
            }
          }
        }
        m_pcReshaper->setRecReshaped(false);

        if( m_pcCfg->getGopBasedTemporalFilterEnabled() )
        {
          pcPic->getOrigBuf().copyFrom( pcPic->getFilteredOrigBuf() );
        }
        else
        {
          pcPic->getOrigBuf().copyFrom( pcPic->getTrueOrigBuf() );
        }
      }

#if JVET_AA0095_ALF_WITH_SAMPLES_BEFORE_DBF
      if (pcSlice->getSPS()->getALFEnabledFlag())
      {
        // create ALF object based on the picture size
        Size alfSize = m_pcALF->getAlfSize();
        if (alfSize.width != picWidth || alfSize.height != picHeight)
        {
          m_pcALF->destroy();
          m_pcALF->create(m_pcCfg, picWidth, picHeight, chromaFormatIDC, maxCUWidth, maxCUHeight, maxTotalCUDepth, m_pcCfg->getBitDepth(), m_pcCfg->getInputBitDepth());
        }

        m_pcALF->copyDbData(cs);
      }
#endif
#if JVET_AC0162_ALF_RESIDUAL_SAMPLES_INPUT
      if (pcSlice->getSPS()->getALFEnabledFlag())
      {
        // create ALF object based on the picture size
        Size alfSize = m_pcALF->getAlfSize();
        if (alfSize.width != picWidth || alfSize.height != picHeight)
        {
          m_pcALF->destroy();
          m_pcALF->create(m_pcCfg, picWidth, picHeight, chromaFormatIDC, maxCUWidth, maxCUHeight, maxTotalCUDepth,
                          m_pcCfg->getBitDepth(), m_pcCfg->getInputBitDepth());
        }

        m_pcALF->copyResiData(cs);
      }
#endif

#if RPR_ENABLE
      // create SAO object based on the picture size
      if( pcSlice->getSPS()->getSAOEnabledFlag()
#if JVET_V0094_BILATERAL_FILTER
          || pcSlice->getPPS()->getUseBIF()
#endif
#if JVET_X0071_CHROMA_BILATERAL_FILTER
          || pcSlice->getPPS()->getUseChromaBIF()
#endif
          )
      {
        Size saoSize = m_pcSAO->getSaoSize();
        if ( saoSize.width != picWidth || saoSize.height != picHeight ) {
          const uint32_t widthInCtus = (picWidth + maxCUWidth - 1) / maxCUWidth;
          const uint32_t heightInCtus = (picHeight + maxCUHeight - 1) / maxCUHeight;
          const uint32_t numCtuInFrame = widthInCtus * heightInCtus;
          const uint32_t  log2SaoOffsetScaleLuma = (uint32_t)std::max(0, pcSlice->getSPS()->getBitDepth(CHANNEL_TYPE_LUMA) - MAX_SAO_TRUNCATED_BITDEPTH);
          const uint32_t  log2SaoOffsetScaleChroma = (uint32_t)std::max(0, pcSlice->getSPS()->getBitDepth(CHANNEL_TYPE_CHROMA) - MAX_SAO_TRUNCATED_BITDEPTH);

          m_pcSAO->create(picWidth, picHeight, chromaFormatIDC, maxCUWidth, maxCUHeight, maxTotalCUDepth, log2SaoOffsetScaleLuma, log2SaoOffsetScaleChroma);
          m_pcSAO->destroyEncData();
          m_pcSAO->createEncData(m_pcCfg->getSaoCtuBoundary(), numCtuInFrame);
          m_pcSAO->setReshaper(m_pcReshaper);
        }
      }
#endif

      if( pcSlice->getSPS()->getScalingListFlag() && m_pcCfg->getUseScalingListId() == SCALING_LIST_FILE_READ )
      {
        picHeader->setExplicitScalingListEnabledFlag(true);
        pcSlice->setExplicitScalingListUsed(true);
        int apsId = 0;
        picHeader->setScalingListAPSId( apsId );
      }

      // SAO parameter estimation using non-deblocked pixels for CTU bottom and right boundary areas
      if( pcSlice->getSPS()->getSAOEnabledFlag() && m_pcCfg->getSaoCtuBoundary() )
      {
        // This is fine to skip even if SAO=0 and BIF=1.
        m_pcSAO->getPreDBFStatistics( cs );
      }

      //-- Loop filter
      if ( m_pcCfg->getDeblockingFilterMetric() )
      {
  #if W0038_DB_OPT
        if ( m_pcCfg->getDeblockingFilterMetric()==2 )
        {
          applyDeblockingFilterParameterSelection(pcPic, uiNumSliceSegments, iGOPid);
        }
        else
        {
  #endif
          applyDeblockingFilterMetric(pcPic, uiNumSliceSegments);
  #if W0038_DB_OPT
        }
  #endif
      }
#if DB_PARAM_TID
      else
      {
        applyDeblockingFilterParameterSelection( pcPic, pcSlice, uiNumSliceSegments, iGOPid );
      }
#endif

      if (m_pcCfg->getCostMode() == COST_LOSSLESS_CODING) 
      {
        for (int s = 0; s < uiNumSliceSegments; s++)
        {
          if (pcPic->slices[s]->isLossless())
          {
            pcPic->slices[s]->setDeblockingFilterDisable(true);
          }
        }
      }
#if JVET_AB0171_ASYMMETRIC_DB_FOR_GDR
      if (m_pcCfg->getAsymmetricILF() && (pcPic->cs->picHeader->getInGdrInterval() || pcPic->cs->picHeader->getIsGdrRecoveryPocPic()))
      {
        m_pcLoopFilter->setAsymmetricDB(true);
      }
      else
      {
        m_pcLoopFilter->setAsymmetricDB(false);
      }
#endif

      m_pcLoopFilter->loopFilterPic( cs );

#if !MULTI_PASS_DMVR
      CS::setRefinedMotionField(cs);
#endif

#if JVET_AE0043_CCP_MERGE_TEMPORAL
      if ((pcPic->temporalId == 0) || (pcPic->temporalId < pcSlice->getSPS()->getMaxTLayers() - 1))
      {
        CS::saveTemporalCcpModel(cs);
      }
#endif

#if JVET_W0066_CCSAO
      if ( cs.sps->getCCSAOEnabledFlag() )
      {
        m_pcSAO->getCcSaoBuf().copyFrom( cs.getRecoBuf() );
      }
#endif

#if JVET_V0094_BILATERAL_FILTER
#if JVET_X0071_CHROMA_BILATERAL_FILTER
      if( pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseBIF() || pcSlice->getPPS()->getUseChromaBIF())
#else
      // We need to do this step if at least one of BIF or SAO are enabled.
      if( pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseBIF())
#endif
#else
#if JVET_X0071_CHROMA_BILATERAL_FILTER
      if( pcSlice->getSPS()->getSAOEnabledFlag() || pcSlice->getPPS()->getUseChromaBIF())
#else
      if( pcSlice->getSPS()->getSAOEnabledFlag() )
#endif
#endif
      {
        bool sliceEnabled[MAX_NUM_COMPONENT];
        m_pcSAO->initCABACEstimator( m_pcEncLib->getCABACEncoder(), m_pcEncLib->getCtxCache(), pcSlice );
#if JVET_V0094_BILATERAL_FILTER
        BIFCabacEstImp est(m_pcEncLib->getCABACEncoder()->getCABACEstimator(cs.slice->getSPS()));
#endif      
        m_pcSAO->SAOProcess( cs, sliceEnabled, pcSlice->getLambdas(),
#if ENABLE_QPA
                             (m_pcCfg->getUsePerceptQPA() && !m_pcCfg->getUseRateCtrl() && pcSlice->getPPS()->getUseDQP() ? m_pcEncLib->getRdCost (PARL_PARAM0 (0))->getChromaWeight() : 0.0),
#endif
                             m_pcCfg->getTestSAODisableAtPictureLevel(), m_pcCfg->getSaoEncodingRate(), m_pcCfg->getSaoEncodingRateChroma(), m_pcCfg->getSaoCtuBoundary(), m_pcCfg->getSaoGreedyMergeEnc()
#if JVET_V0094_BILATERAL_FILTER
                              , &est
#endif
                            );
        //assign SAO slice header
#if JVET_V0094_BILATERAL_FILTER || JVET_X0071_CHROMA_BILATERAL_FILTER
        if( pcSlice->getSPS()->getSAOEnabledFlag() )
        {
#endif
        for (int s = 0; s < uiNumSliceSegments; s++)
        {

          if (pcPic->slices[s]->isLossless() && m_pcCfg->getCostMode() == COST_LOSSLESS_CODING)
          {
            pcPic->slices[s]->setSaoEnabledFlag(CHANNEL_TYPE_LUMA, false);
            pcPic->slices[s]->setSaoEnabledFlag(CHANNEL_TYPE_CHROMA, false);
          }
          else
          {
            pcPic->slices[s]->setSaoEnabledFlag(CHANNEL_TYPE_LUMA, sliceEnabled[COMPONENT_Y]);
            CHECK(!(sliceEnabled[COMPONENT_Cb] == sliceEnabled[COMPONENT_Cr]), "Unspecified error");
            pcPic->slices[s]->setSaoEnabledFlag(CHANNEL_TYPE_CHROMA, sliceEnabled[COMPONENT_Cb]);

        }

        }
#if JVET_V0094_BILATERAL_FILTER || JVET_X0071_CHROMA_BILATERAL_FILTER
      }
#endif
      }

#if JVET_W0066_CCSAO
      if ( pcSlice->getSPS()->getCCSAOEnabledFlag() )
      {
        m_pcSAO->initCABACEstimator( m_pcEncLib->getCABACEncoder(), m_pcEncLib->getCtxCache(), pcSlice );
        m_pcSAO->CCSAOProcess( cs, pcSlice->getLambdas(), m_pcCfg->getIntraPeriod() );

        //assign CCSAO slice header
        for (int s = 0; s < uiNumSliceSegments; s++)
        {
          pcPic->slices[s]->m_ccSaoComParam              = m_pcSAO->getCcSaoComParam();
          pcPic->slices[s]->m_ccSaoControl[COMPONENT_Y]  = m_pcSAO->getCcSaoControlIdc(COMPONENT_Y);
          pcPic->slices[s]->m_ccSaoControl[COMPONENT_Cb] = m_pcSAO->getCcSaoControlIdc(COMPONENT_Cb);
          pcPic->slices[s]->m_ccSaoControl[COMPONENT_Cr] = m_pcSAO->getCcSaoControlIdc(COMPONENT_Cr);
        }
      }
      m_pcSAO->jointClipSaoBifCcSao( cs );
#endif

#if RPR_ENABLE && !JVET_AA0095_ALF_WITH_SAMPLES_BEFORE_DBF
      // create ALF object based on the picture size
      if ( pcSlice->getSPS()->getALFEnabledFlag() )
      {
        Size alfSize = m_pcALF->getAlfSize();
        if ( alfSize.width != picWidth || alfSize.height != picHeight )
        {
          m_pcALF->destroy();
          m_pcALF->create( m_pcCfg, picWidth, picHeight, chromaFormatIDC, maxCUWidth, maxCUHeight, maxTotalCUDepth, m_pcCfg->getBitDepth(), m_pcCfg->getInputBitDepth() );
        }
      }
#endif

      if( pcSlice->getSPS()->getALFEnabledFlag() )
      {
        for (int s = 0; s < uiNumSliceSegments; s++)
        {
          pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Y, false);
        }
        m_pcALF->initCABACEstimator(m_pcEncLib->getCABACEncoder(), m_pcEncLib->getCtxCache(), pcSlice, m_pcEncLib->getApsMap());
        m_pcALF->ALFProcess(cs, pcSlice->getLambdas()
#if ENABLE_QPA
          , (m_pcCfg->getUsePerceptQPA() && !m_pcCfg->getUseRateCtrl() && pcSlice->getPPS()->getUseDQP() ? m_pcEncLib->getRdCost(PARL_PARAM0(0))->getChromaWeight() : 0.0)
#endif
          , pcPic, uiNumSliceSegments
#if JVET_AC0162_ALF_RESIDUAL_SAMPLES_INPUT
          , m_pcCfg->getIntraPeriod()
#endif
        );

        //assign ALF slice header
        for (int s = 0; s < uiNumSliceSegments; s++)
        {
           //For the first slice, even if it is lossless, slice level ALF is not disabled and ALF-APS is signaled so that the later lossy slices can use APS of the first slice. 
           //However, if the first slice is lossless, the ALF process is disabled for all of the CTUs ( m_ctuEnableFlag == 0) of that slice which is implemented in the function void EncAdaptiveLoopFilter::ALFProcess.         
      
          if (pcPic->slices[s]->isLossless() && s && m_pcCfg->getCostMode() == COST_LOSSLESS_CODING)
          {
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Y, false);
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Cb, false);
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Cr, false);
          }
          else
          {
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Y, cs.slice->getTileGroupAlfEnabledFlag(COMPONENT_Y));
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Cb, cs.slice->getTileGroupAlfEnabledFlag(COMPONENT_Cb));
            pcPic->slices[s]->setTileGroupAlfEnabledFlag(COMPONENT_Cr, cs.slice->getTileGroupAlfEnabledFlag(COMPONENT_Cr));

          }
          if (pcPic->slices[s]->getTileGroupAlfEnabledFlag(COMPONENT_Y))
          {
#if ALF_IMPROVEMENT
            pcPic->slices[s]->setTileGroupAlfFixedFilterSetIdx(cs.slice->getTileGroupAlfFixedFilterSetIdx());
#endif
            pcPic->slices[s]->setTileGroupNumAps(cs.slice->getTileGroupNumAps());
            pcPic->slices[s]->setAlfAPSs(cs.slice->getTileGroupApsIdLuma());
          }
          else
          {
            pcPic->slices[s]->setTileGroupNumAps(0);
          }
          if( s < uiNumSliceSegments - 1 )
          {
            pcPic->slices[s]->setAlfAPSs(cs.slice->getAlfAPSs());
          }
          pcPic->slices[s]->setTileGroupApsIdChroma(cs.slice->getTileGroupApsIdChroma());
          pcPic->slices[s]->setTileGroupCcAlfCbApsId(cs.slice->getTileGroupCcAlfCbApsId());
          pcPic->slices[s]->setTileGroupCcAlfCrApsId(cs.slice->getTileGroupCcAlfCrApsId());
          pcPic->slices[s]->m_ccAlfFilterParam      = m_pcALF->getCcAlfFilterParam();
          pcPic->slices[s]->m_ccAlfFilterControl[0] = m_pcALF->getCcAlfControlIdc(COMPONENT_Cb);
          pcPic->slices[s]->m_ccAlfFilterControl[1] = m_pcALF->getCcAlfControlIdc(COMPONENT_Cr);
        }
      }
      DTRACE_UPDATE( g_trace_ctx, ( std::make_pair( "final", 1 ) ) );
      if (m_pcCfg->getUseCompositeRef() && getPrepareLTRef())
      {
        updateCompositeReference(pcSlice, rcListPic, pocCurr);
      }
    }
    else // skip enc picture
    {
      pcSlice->setSliceQpBase( pcSlice->getSliceQp() );

#if JVET_Z0135_TEMP_CABAC_WIN_WEIGHT 
      m_pcSliceEncoder->getCABACDataStore()->updateBufferState( pcSlice );
#endif

#if ENABLE_QPA
      if (m_pcCfg->getUsePerceptQPA() && !m_pcCfg->getUseRateCtrl() && pcSlice->getPPS()->getUseDQP())
      {
        const double picLambda = pcSlice->getLambdas()[0];

        for (uint32_t ctuRsAddr = 0; ctuRsAddr < numberOfCtusInFrame; ctuRsAddr++)
        {
          pcPic->m_uEnerHpCtu[ctuRsAddr] = picLambda;  // initialize to slice lambda (just for safety)
        }
      }
#endif
      if( pcSlice->getSPS()->getSAOEnabledFlag() )
      {
        // This does not need to be run even if BIF=1.
        m_pcSAO->disabledRate( *pcPic->cs, pcPic->getSAO(1), m_pcCfg->getSaoEncodingRate(), m_pcCfg->getSaoEncodingRateChroma());
      }
      if (pcSlice->getSPS()->getALFEnabledFlag() && (pcSlice->getTileGroupAlfEnabledFlag(COMPONENT_Y) || pcSlice->getTileGroupCcAlfCbEnabledFlag() || pcSlice->getTileGroupCcAlfCrEnabledFlag()))
      {
        // IRAP AU: reset APS map
        {
          int layerIdx = pcSlice->getVPS() == nullptr ? 0 : pcSlice->getVPS()->getGeneralLayerIdx( pcSlice->getPic()->layerId );
          if( !layerIdx && ( pcSlice->getPendingRasInit() || pcSlice->isIDRorBLA() ) )
          {
            // We have to reset all APS on IRAP, but in not encoding case we have to keep the parsed APS of current slice
            // Get active ALF APSs from picture/slice header
            const std::vector<int> sliceApsIdsLuma = pcSlice->getTileGroupApsIdLuma();

            m_pcALF->setApsIdStart( ALF_CTB_MAX_NUM_APS );

            ParameterSetMap<APS>* apsMap = m_pcEncLib->getApsMap();
            apsMap->clear();

            for( int apsId = 0; apsId < ALF_CTB_MAX_NUM_APS; apsId++ )
            {
              int psId = ( apsId << NUM_APS_TYPE_LEN ) + ALF_APS;
              APS* aps = apsMap->getPS( psId );
              if( aps )
              {
                // Check if this APS is currently the active one (used in current slice)
                bool activeAps = false;
                bool activeApsCcAlf = false;
                // Luma
                for( int i = 0; i < sliceApsIdsLuma.size(); i++ )
                {
                  if( aps->getAPSId() == sliceApsIdsLuma[i] )
                  {
                    activeAps = true;
                    break;
                  }
                }
                // Chroma
                activeAps |= aps->getAPSId() == pcSlice->getTileGroupApsIdChroma();
                // CC-ALF
                activeApsCcAlf |= pcSlice->getTileGroupCcAlfCbEnabledFlag() && aps->getAPSId() == pcSlice->getTileGroupCcAlfCbApsId();
                activeApsCcAlf |= pcSlice->getTileGroupCcAlfCrEnabledFlag() && aps->getAPSId() == pcSlice->getTileGroupCcAlfCrApsId();
                if( !activeAps && !activeApsCcAlf )
                {
                  apsMap->clearChangedFlag( psId );
                }
                if( !activeAps  )
                {
                  aps->getAlfAPSParam().reset();
                }
                if( !activeApsCcAlf )
                {
                  aps->getCcAlfAPSParam().reset();
                }
              }
            }
          }
        }

        // Assign tne correct APS to slice and emulate the setting of ALF start APS ID
        int changedApsId = -1;
        for( int apsId = ALF_CTB_MAX_NUM_APS - 1; apsId >= 0; apsId-- )
        {
          ParameterSetMap<APS>* apsMap = m_pcEncLib->getApsMap();
          int psId = ( apsId << NUM_APS_TYPE_LEN ) + ALF_APS;
          APS* aps = apsMap->getPS( psId );
          if( aps )
          {
            // In slice, replace the old APS (from decoder map) with the APS from encoder map due to later checks while bitstream writing
            if( pcSlice->getAlfAPSs() && pcSlice->getAlfAPSs()[apsId] )
            {
              pcSlice->getAlfAPSs()[apsId] = aps;
            }
            if( apsMap->getChangedFlag( psId ) )
              changedApsId = apsId;
          }
        }
        if( changedApsId >= 0 )
          m_pcALF->setApsIdStart( changedApsId );
      }
    }

    pcSlice->freeScaledRefPicList( scaledRefPic );

    if( m_pcCfg->getUseAMaxBT() )
    {
      for( const CodingUnit *cu : pcPic->cs->cus )
      {
        if( !pcSlice->isIntra() )
        {
          m_uiBlkSize[pcSlice->getDepth()] += cu->Y().area();
          m_uiNumBlk [pcSlice->getDepth()]++;
        }
      }
    }

    if( encPic || decPic )
    {
      pcSlice = pcPic->slices[0];

      /////////////////////////////////////////////////////////////////////////////////////////////////// File writing

#if EMBEDDED_APS
      m_aps.clear();
#endif

      // write various parameter sets
#if JVET_Z0118_GDR // note : insert SPS/PPS at every GDR picture
      bool writePS = m_bSeqFirst || (m_pcCfg->getReWriteParamSets() && (pcSlice->isIRAP())) || pcSlice->isInterGDR();
#else
      bool writePS = m_bSeqFirst || (m_pcCfg->getReWriteParamSets() && (pcSlice->isIRAP()));
#endif
      if (writePS)
      {
        m_pcEncLib->setParamSetChanged(pcSlice->getSPS()->getSPSId(), pcSlice->getPPS()->getPPSId());
      }

      int layerIdx = m_pcEncLib->getVPS() == nullptr ? 0 : m_pcEncLib->getVPS()->getGeneralLayerIdx( m_pcEncLib->getLayerId() );

      // it is assumed that layerIdx equal to 0 is always present
      m_audIrapOrGdrAuFlag = pcSlice->getPicHeader()->getGdrPicFlag() || (pcSlice->isIRAP() && !pcSlice->getPPS()->getMixedNaluTypesInPicFlag());
      if ((( m_pcEncLib->getVPS()->getMaxLayers() > 1 && m_audIrapOrGdrAuFlag) || m_pcCfg->getAccessUnitDelimiter()) && !layerIdx )
      {
        xWriteAccessUnitDelimiter(accessUnit, pcSlice);
      }

      // it is assumed that layerIdx equal to 0 is always present
      actualTotalBits += xWriteParameterSets(accessUnit, pcSlice, writePS, layerIdx);
      if (writePS)
      {
        // create prefix SEI messages at the beginning of the sequence
        CHECK(!(leadingSeiMessages.empty()), "Unspecified error");
        xCreateIRAPLeadingSEIMessages(leadingSeiMessages, pcSlice->getSPS(), pcSlice->getPPS());

        m_bSeqFirst = false;
      }


      //send LMCS APS when LMCSModel is updated. It can be updated even current slice does not enable reshaper.
      //For example, in RA, update is on intra slice, but intra slice may not use reshaper
      if (pcSlice->getSPS()->getUseLmcs())
      {
        //only 1 LMCS data for 1 picture
        int apsId = picHeader->getLmcsAPSId();
        ParameterSetMap<APS> *apsMap = m_pcEncLib->getApsMap();
        APS* aps = apsMap->getPS((apsId << NUM_APS_TYPE_LEN) + LMCS_APS);
        bool writeAPS = aps && apsMap->getChangedFlag((apsId << NUM_APS_TYPE_LEN) + LMCS_APS);
#if JVET_Z0118_GDR // note : insert APS at every GDR picture
        if (aps && apsId >= 0)
        {
          writeAPS |= pcSlice->isInterGDR();
        }
#endif
        if (writeAPS)
        {
#if JVET_R0433
          aps->chromaPresentFlag = pcSlice->getSPS()->getChromaFormatIdc() != CHROMA_400;
#endif
          actualTotalBits += xWriteAPS( accessUnit, aps, m_pcEncLib->getLayerId(), true );
          apsMap->clearChangedFlag((apsId << NUM_APS_TYPE_LEN) + LMCS_APS);
#if JVET_Z0118_GDR
          if (!pcSlice->isInterGDR())
          {
            CHECK(aps != picHeader->getLmcsAPS(), "Wrong LMCS APS pointer in compressGOP");
          }
#else
          CHECK(aps != picHeader->getLmcsAPS(), "Wrong LMCS APS pointer in compressGOP");
#endif
        }
      }

      // only 1 SCALING LIST data for 1 picture
      if( pcSlice->getSPS()->getScalingListFlag() && ( m_pcCfg->getUseScalingListId() == SCALING_LIST_FILE_READ ) )
      {
        int apsId = picHeader->getScalingListAPSId();
        ParameterSetMap<APS> *apsMap = m_pcEncLib->getApsMap();
        APS* aps = apsMap->getPS( ( apsId << NUM_APS_TYPE_LEN ) + SCALING_LIST_APS );
        bool writeAPS = aps && apsMap->getChangedFlag( ( apsId << NUM_APS_TYPE_LEN ) + SCALING_LIST_APS );
#if JVET_Z0118_GDR // note : insert APS at every GDR picture
        if (aps && apsId >= 0)
        {
          writeAPS |= pcSlice->isInterGDR();
        }
#endif
        if( writeAPS )
        {
#if JVET_R0433
          aps->chromaPresentFlag = pcSlice->getSPS()->getChromaFormatIdc() != CHROMA_400;
#endif
          actualTotalBits += xWriteAPS( accessUnit, aps, m_pcEncLib->getLayerId(), true );
          apsMap->clearChangedFlag( ( apsId << NUM_APS_TYPE_LEN ) + SCALING_LIST_APS );
#if JVET_Z0118_GDR
          if (!pcSlice->isInterGDR())
          {
            CHECK(aps != picHeader->getScalingListAPS(), "Wrong SCALING LIST APS pointer in compressGOP");
          }
#else
          CHECK( aps != picHeader->getScalingListAPS(), "Wrong SCALING LIST APS pointer in compressGOP" );
#endif
        }
      }

      if (pcSlice->getSPS()->getALFEnabledFlag() && (pcSlice->getTileGroupAlfEnabledFlag(COMPONENT_Y) || pcSlice->getTileGroupCcAlfCbEnabledFlag() || pcSlice->getTileGroupCcAlfCrEnabledFlag()))
      {
        for (int apsId = 0; apsId < ALF_CTB_MAX_NUM_APS; apsId++)
        {
          ParameterSetMap<APS> *apsMap = m_pcEncLib->getApsMap();

          APS* aps = apsMap->getPS((apsId << NUM_APS_TYPE_LEN) + ALF_APS);
          bool writeAPS = aps && apsMap->getChangedFlag((apsId << NUM_APS_TYPE_LEN) + ALF_APS);
          if (!aps && pcSlice->getAlfAPSs() && pcSlice->getAlfAPSs()[apsId])
          {
            writeAPS = true;
            aps = pcSlice->getAlfAPSs()[apsId]; // use asp from slice header
            *apsMap->allocatePS((apsId << NUM_APS_TYPE_LEN) + ALF_APS) = *aps; //allocate and cpy
            m_pcALF->setApsIdStart( apsId );
          }
          else if (pcSlice->getTileGroupCcAlfCbEnabledFlag() && !aps && apsId == pcSlice->getTileGroupCcAlfCbApsId())
          {
            writeAPS = true;
            aps = apsMap->getPS((pcSlice->getTileGroupCcAlfCbApsId() << NUM_APS_TYPE_LEN) + ALF_APS);
          }
          else if (pcSlice->getTileGroupCcAlfCrEnabledFlag() && !aps && apsId == pcSlice->getTileGroupCcAlfCrApsId())
          {
            writeAPS = true;
            aps = apsMap->getPS((pcSlice->getTileGroupCcAlfCrApsId() << NUM_APS_TYPE_LEN) + ALF_APS);
          }
#if JVET_Z0118_GDR // note : insert APS at every GDR picture
          if (aps && apsId >= 0)
          {
            writeAPS |= (pcSlice->isInterGDR());
          }
#endif
          if (writeAPS )
          {
#if JVET_R0433
            aps->chromaPresentFlag = pcSlice->getSPS()->getChromaFormatIdc() != CHROMA_400;
#endif
            actualTotalBits += xWriteAPS( accessUnit, aps, m_pcEncLib->getLayerId(), true );
            apsMap->clearChangedFlag((apsId << NUM_APS_TYPE_LEN) + ALF_APS);
#if JVET_Z0118_GDR
            if (!pcSlice->isInterGDR())
            {
              CHECK(aps != pcSlice->getAlfAPSs()[apsId] && apsId != pcSlice->getTileGroupCcAlfCbApsId() && apsId != pcSlice->getTileGroupCcAlfCrApsId(), "Wrong APS pointer in compressGOP");
            }
#else
            CHECK(aps != pcSlice->getAlfAPSs()[apsId] && apsId != pcSlice->getTileGroupCcAlfCbApsId() && apsId != pcSlice->getTileGroupCcAlfCrApsId(), "Wrong APS pointer in compressGOP");
#endif
          }
        }
      }

      // reset presence of BP SEI indication
      m_bufferingPeriodSEIPresentInAU = false;
      // create prefix SEI associated with a picture
      xCreatePerPictureSEIMessages(iGOPid, leadingSeiMessages, nestedSeiMessages, pcSlice);