IntraSearch.cpp

      {
        cu.dimdChromaMode = cu.dimdChromaModeSecond;
      }
    }
#else
      // derive DIMD chroma mode
      CompArea areaCb = pu.Cb();
      CompArea areaCr = pu.Cr();
      CompArea lumaArea = CompArea(COMPONENT_Y, pu.chromaFormat, areaCb.lumaPos(), recalcSize(pu.chromaFormat, CHANNEL_TYPE_CHROMA, CHANNEL_TYPE_LUMA, areaCb.size()));//needed for correct pos/size (4x4 Tus)
      IntraPrediction::deriveDimdChromaMode(cs.picture->getRecoBuf(lumaArea), cs.picture->getRecoBuf(areaCb), cs.picture->getRecoBuf(areaCr), lumaArea, areaCb, areaCr, *pu.cu);
#endif
#endif
#if JVET_AC0071_DBV
      if (PU::hasChromaBvFlag(pu))
      {
        PU::deriveChromaBv(pu);
      }
      else
      {
        uiMaxMode--;
      }
#endif

      // create a temporary CS
      CodingStructure &saveCS = *m_pSaveCS[0];
      saveCS.pcv      = cs.pcv;
      saveCS.picture  = cs.picture;
#if JVET_Z0118_GDR
      saveCS.m_pt = cs.m_pt;
#endif
      saveCS.area.repositionTo( cs.area );
      saveCS.clearTUs();
#if !INTRA_RM_SMALL_BLOCK_SIZE_CONSTRAINTS
      if( !cu.isSepTree() && cu.ispMode )
#else
      if (!CS::isDualITree(cs) && cu.ispMode)
#endif
      {
        saveCS.clearCUs();
        saveCS.clearPUs();
      }
#if !INTRA_RM_SMALL_BLOCK_SIZE_CONSTRAINTS
      if( cu.isSepTree() )
#else
      if (CS::isDualITree(cs))
#endif
      {
        if( partitioner.canSplit( TU_MAX_TR_SPLIT, cs ) )
        {
          partitioner.splitCurrArea( TU_MAX_TR_SPLIT, cs );

          do
          {
            cs.addTU( CS::getArea( cs, partitioner.currArea(), partitioner.chType ), partitioner.chType ).depth = partitioner.currTrDepth;
          } while( partitioner.nextPart( cs ) );

          partitioner.exitCurrSplit();
        }
        else
        cs.addTU( CS::getArea( cs, partitioner.currArea(), partitioner.chType ), partitioner.chType );
      }

      std::vector<TransformUnit*> orgTUs;

      if( lumaUsesISP )
      {
        CodingUnit& auxCU = saveCS.addCU( cu, partitioner.chType );
        auxCU.ispMode = cu.ispMode;
        saveCS.sps = cu.cs->sps;
        saveCS.addPU( *cu.firstPU, partitioner.chType );
      }


      // create a store for the TUs
      for( const auto &ptu : cs.tus )
      {
        // for split TUs in HEVC, add the TUs without Chroma parts for correct setting of Cbfs
        if( lumaUsesISP || pu.contains( *ptu, CHANNEL_TYPE_CHROMA ) )
        {
          saveCS.addTU( *ptu, partitioner.chType );
          orgTUs.push_back( ptu );
        }
      }
      if( lumaUsesISP )
      {
        saveCS.clearCUs();
      }
      // SATD pre-selecting.
      int satdModeList[NUM_CHROMA_MODE];
      int64_t satdSortedCost[NUM_CHROMA_MODE];
      for (int i = 0; i < NUM_CHROMA_MODE; i++)
      {
        satdSortedCost[i] = 0; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
        satdModeList[i] = 0;
      }
#if JVET_Z0050_DIMD_CHROMA_FUSION && ENABLE_DIMD
#if JVET_AC0071_DBV
      bool modeIsEnable[NUM_INTRA_MODE + 3]; // use intra mode idx to check whether enable
      for (int i = 0; i < NUM_INTRA_MODE + 3; i++)
      {
        modeIsEnable[i] = 1;
      }
#else
      bool modeIsEnable[NUM_INTRA_MODE + 2]; // use intra mode idx to check whether enable
      for (int i = 0; i < NUM_INTRA_MODE + 2; i++)
      {
        modeIsEnable[i] = 1;
      }
#endif
#else
#if JVET_AC0071_DBV
      bool modeIsEnable[NUM_INTRA_MODE + 2]; // use intra mode idx to check whether enable
      for (int i = 0; i < NUM_INTRA_MODE + 2; i++)
      {
        modeIsEnable[i] = 1;
      }
#else
      bool modeIsEnable[NUM_INTRA_MODE + 1]; // use intra mode idx to check whether enable
      for (int i = 0; i < NUM_INTRA_MODE + 1; i++)
      {
        modeIsEnable[i] = 1;
      }
#endif
#endif
      DistParam distParamSad;
      DistParam distParamSatd;
      pu.intraDir[1] = MDLM_L_IDX; // temporary assigned, just to indicate this is a MDLM mode. for luma down-sampling operation.

      initIntraPatternChType(cu, pu.Cb());
      initIntraPatternChType(cu, pu.Cr());
      xGetLumaRecPixels(pu, pu.Cb());

#if JVET_AA0126_GLM
      if ( PU::isLMCModeEnabled( pu, LM_CHROMA_IDX ) && PU::hasGlmFlag( pu, LM_CHROMA_IDX ) )
      {
#if JVET_AB0092_GLM_WITH_LUMA && JVET_AB0174_CCCM_DIV_FREE
        xGlmSetLumaRefValue(pu, pu.Cb());
#endif
        // Generate all GLM templates at encoder
        xGetLumaRecPixelsGlmAll(pu, pu.Cb());
        pu.intraDir[1] = LM_CHROMA_IDX;
        xGetLumaRecPixels(pu, pu.Cb());

        for ( int mode = LM_CHROMA_IDX; mode <= MMLM_T_IDX; mode++ )
        {
          satdGlmIdcBest[mode - LM_CHROMA_IDX].setAllZero();
          
#if JVET_AB0092_GLM_WITH_LUMA
          CodedCUInfo& relatedCU = ((EncModeCtrlMTnoRQT *)m_modeCtrl)->getBlkInfo(partitioner.currArea());
          if (PU::hasGlmFlag(pu, mode) && !relatedCU.skipGLM)
#else
          if ( PU::hasGlmFlag( pu, mode ) )
#endif
          {
#if !JVET_AB0092_GLM_WITH_LUMA
            for ( int comp = COMPONENT_Cb; comp <= COMPONENT_Cr; comp++ )
            {
              ComponentID       compID = ComponentID( comp );
#else
              ComponentID       compID = COMPONENT_Cb;
#endif
              int              idcBest = 0;
              int64_t         satdBest = 0;
              GlmIdc&         idcsBest = satdGlmIdcBest[mode - LM_CHROMA_IDX];
              
              pu.intraDir[1] = mode;
              pu.glmIdc.setAllZero();

              xFindBestGlmIdcSATD(pu, compID, idcBest, satdBest );

              idcsBest.setIdc(compID, 0, idcBest);
              idcsBest.setIdc(compID, 1, idcBest);

#if JVET_AB0092_GLM_WITH_LUMA
              idcsBest.setIdc(COMPONENT_Cr, 0, idcBest);
              idcsBest.setIdc(COMPONENT_Cr, 1, idcBest);
#endif
              
              satdGlmCosts[mode - LM_CHROMA_IDX] += satdBest; // Summing up Cb and Cr cost
#if !JVET_AB0092_GLM_WITH_LUMA
            }
            
            if ( !satdGlmIdcBest[0].isActive() )
            {
              break;
            }
#endif
          }
        }
      }

      pu.glmIdc.setAllZero();
#endif
      
#if JVET_Z0050_CCLM_SLOPE
      if ( PU::isLMCModeEnabled( pu, LM_CHROMA_IDX ) && PU::hasCclmDeltaFlag( pu, LM_CHROMA_IDX ) )
      {
        // Fill luma reference buffer for the two-sided CCLM
        pu.intraDir[1] = LM_CHROMA_IDX;
        xGetLumaRecPixels(pu, pu.Cb());

        for ( int mode = LM_CHROMA_IDX; mode <= MDLM_T_IDX; mode++ )
        {
          satdCclmOffsetsBest[mode - LM_CHROMA_IDX].setAllZero();
          
          if ( PU::hasCclmDeltaFlag( pu, mode ) )
          {
            for ( int comp = COMPONENT_Cb; comp <= COMPONENT_Cr; comp++ )
            {
              ComponentID       compID = ComponentID( comp );
              int            deltaBest = 0;
              int64_t         satdBest = 0;
              CclmOffsets& offsetsBest = satdCclmOffsetsBest[mode - LM_CHROMA_IDX];
              
              pu.intraDir[1] = mode;
              pu.cclmOffsets.setAllZero();

              xFindBestCclmDeltaSlopeSATD(pu, compID, 0, deltaBest, satdBest );

              offsetsBest.setOffset(compID, 0, deltaBest);

#if MMLM
              if ( PU::isMultiModeLM( mode ) )
              {
                // Set best found values for the first model to get a matching second model
                pu.cclmOffsets.setOffsets(offsetsBest.cb0, offsetsBest.cr0, 0, 0);

                xFindBestCclmDeltaSlopeSATD(pu, compID, 1, deltaBest, satdBest );

                offsetsBest.setOffset(compID, 1, deltaBest);
              }
#endif

              satdCclmCosts[mode - LM_CHROMA_IDX] += satdBest; // Summing up Cb and Cr cost
            }
          }
        }
      }

      pu.cclmOffsets.setAllZero();
#endif
#if JVET_AD0120_LBCCP && MMLM
      std::vector<lmPredFiltModeInfo> miLmPredFiltList;
      miLmPredFiltList.clear();
#if JVET_AD0188_CCP_MERGE
      CCPModelCandidate ccpCandlmPredFilt[LBCCP_FILTER_MMLMNUM];
#endif
      PelUnitBuf lmPredFilterStorage[LBCCP_FILTER_MMLMNUM];
      const UnitArea tmpUnitArea(pu.chromaFormat, Area(0, 0, (pu.Cb().width) << getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, pu.chromaFormat), (pu.Cb().height) << getChannelTypeScaleY(CHANNEL_TYPE_CHROMA, pu.chromaFormat)));
      for (uint32_t i = 0; i < LBCCP_FILTER_MMLMNUM; i++)
      {
        lmPredFilterStorage[i] = m_lmPredFiltStorage[i].getBuf(tmpUnitArea);
#if JVET_AD0188_CCP_MERGE
        ccpCandlmPredFilt[i] = {};
#endif
      }
      int lmPredFiltIdx = 0;
#endif

#if MMLM
      m_encPreRDRun = true;
#endif
      for (int idx = uiMinMode; idx <= uiMaxMode - 1; idx++)
      {
        int mode = chromaCandModes[idx];
        satdModeList[idx] = mode;
        if (PU::isLMCMode(mode) && !PU::isLMCModeEnabled(pu, mode))
        {
          continue;
        }
        if ((mode == LM_CHROMA_IDX) || (mode == PLANAR_IDX) || (mode == DM_CHROMA_IDX)
#if JVET_Z0050_DIMD_CHROMA_FUSION && ENABLE_DIMD
          || (mode == DIMD_CHROMA_IDX)
#endif
#if JVET_AC0071_DBV
          || (mode == DBV_CHROMA_IDX)
#endif
          ) // only pre-check regular modes and MDLM modes, not including DM, DIMD, Planar, and LM
        {
          continue;
        }
        pu.intraDir[1] = mode; // temporary assigned, for SATD checking.

        int64_t sad = 0;
        int64_t sadCb = 0;
        int64_t satdCb = 0;
        int64_t sadCr = 0;
        int64_t satdCr = 0;
        CodingStructure& cs = *(pu.cs);
#if JVET_AD0120_LBCCP && JVET_AD0188_CCP_MERGE
        pu.curCand = {};
#endif

        CompArea areaCb = pu.Cb();
        PelBuf orgCb = cs.getOrgBuf(areaCb);
        PelBuf predCb = cs.getPredBuf(areaCb);
        m_pcRdCost->setDistParam(distParamSad, orgCb, predCb, pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, false);
        m_pcRdCost->setDistParam(distParamSatd, orgCb, predCb, pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, true);
        distParamSad.applyWeight = false;
        distParamSatd.applyWeight = false;
        if (PU::isLMCMode(mode))
        {
          predIntraChromaLM(COMPONENT_Cb, predCb, pu, areaCb, mode);
        }
        else
        {
          initPredIntraParams(pu, pu.Cb(), *pu.cs->sps);
          predIntraAng(COMPONENT_Cb, predCb, pu);
        }
        sadCb = distParamSad.distFunc(distParamSad) * 2;
        satdCb = distParamSatd.distFunc(distParamSatd);
        sad += std::min(sadCb, satdCb);
        CompArea areaCr = pu.Cr();
        PelBuf orgCr = cs.getOrgBuf(areaCr);
        PelBuf predCr = cs.getPredBuf(areaCr);
        m_pcRdCost->setDistParam(distParamSad, orgCr, predCr, pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, false);
        m_pcRdCost->setDistParam(distParamSatd, orgCr, predCr, pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, true);
        distParamSad.applyWeight = false;
        distParamSatd.applyWeight = false;
        if (PU::isLMCMode(mode))
        {
          predIntraChromaLM(COMPONENT_Cr, predCr, pu, areaCr, mode);
        }
        else
        {
          initPredIntraParams(pu, pu.Cr(), *pu.cs->sps);
          predIntraAng(COMPONENT_Cr, predCr, pu);
        }
        sadCr = distParamSad.distFunc(distParamSad) * 2;
        satdCr = distParamSatd.distFunc(distParamSatd);
        sad += std::min(sadCr, satdCr);
        satdSortedCost[idx] = sad;
#if JVET_AD0120_LBCCP && MMLM
        if(mode == MMLM_CHROMA_IDX)
        {
          lmPredFilterStorage[lmPredFiltIdx].Cb().copyFrom(predCb);
          lmPredFilterStorage[lmPredFiltIdx].Cr().copyFrom(predCr);
#if JVET_AD0188_CCP_MERGE
          ccpCandlmPredFilt[lmPredFiltIdx] = pu.curCand;
#endif
        }
#endif
      }

#if JVET_AB0143_CCCM_TS
#if MMLM
#if JVET_AC0054_GLCCCM
      uint32_t chromaCandCccmModes[CCCM_NUM_MODES] = { LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX, MMLM_CHROMA_IDX, MMLM_L_IDX, MMLM_T_IDX
                                                     , LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX, MMLM_CHROMA_IDX, MMLM_L_IDX, MMLM_T_IDX };
#else
      uint32_t chromaCandCccmModes[CCCM_NUM_MODES] = { LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX, MMLM_CHROMA_IDX, MMLM_L_IDX, MMLM_T_IDX };
#endif
#else
#if JVET_AC0054_GLCCCM
      uint32_t chromaCandCccmModes[CCCM_NUM_MODES] = { LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX
                                                     , LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX };
#else
      uint32_t chromaCandCccmModes[CCCM_NUM_MODES] = { LM_CHROMA_IDX, MDLM_L_IDX, MDLM_T_IDX };
#endif
#endif

#if JVET_AD0202_CCCM_MDF   
      int satdCccmFilterIndex[TOTAL_NUM_CCCM_MODES];
#if JVET_AC0054_GLCCCM
      int satdCccmFlagList[TOTAL_NUM_CCCM_MODES];
#endif
#else
#if JVET_AC0054_GLCCCM
      int satdCccmFlagList[CCCM_NUM_MODES];
#endif
#endif
        
#if JVET_AC0147_CCCM_NO_SUBSAMPLING
#if JVET_AD0202_CCCM_MDF  
      int64_t satdCccmSortedCost[2][TOTAL_NUM_CCCM_MODES];
      int satdCccmModeList[2][TOTAL_NUM_CCCM_MODES];
      for (int i = 0; i < CCCM_NUM_PRED_FILTER; i++)
      {
        int startIdx = i * CCCM_NUM_MODES;
        for (int j = 0; j < CCCM_NUM_MODES; j++)
        {
          int currCccmModeIdx = startIdx + j;
          satdCccmSortedCost[0][currCccmModeIdx] = LLONG_MAX; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
          satdCccmSortedCost[1][currCccmModeIdx] = LLONG_MAX; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
          satdCccmModeList[0][currCccmModeIdx] = chromaCandCccmModes[j];
          satdCccmModeList[1][currCccmModeIdx] = chromaCandCccmModes[j];
#if JVET_AC0054_GLCCCM
          satdCccmFlagList[currCccmModeIdx] = j < (CCCM_NUM_MODES / 2) ? 1 : 2; // 1: cccm, 2: glCccm
#endif
          satdCccmFilterIndex[currCccmModeIdx] = i;
        }
      }
#else
      int64_t satdCccmSortedCost[2][CCCM_NUM_MODES];
      int satdCccmModeList[2][CCCM_NUM_MODES];

      for (int i = 0; i < CCCM_NUM_MODES; i++)
      {
        satdCccmSortedCost[0][i] = LLONG_MAX; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
        satdCccmSortedCost[1][i] = LLONG_MAX; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
        satdCccmModeList[0][i] = chromaCandCccmModes[i];
        satdCccmModeList[1][i] = chromaCandCccmModes[i];
#if JVET_AC0054_GLCCCM
        satdCccmFlagList[i] = i < (CCCM_NUM_MODES / 2) ? 1 : 2; // 1: cccm, 2: glCccm
#endif
      }
#endif
      int64_t bestCccmCost[2] = { LLONG_MAX, LLONG_MAX};

      bool isCccmFullEnabled = PU::cccmSingleModeAvail(pu, LM_CHROMA_IDX);
      bool isCccmLeftEnabled = PU::isLeftCccmMode(pu, MDLM_L_IDX);
      bool isCccmTopEnabled = PU::isTopCccmMode(pu, MDLM_T_IDX);
#if MMLM
      bool isMultiCccmFullEnabled = PU::cccmMultiModeAvail(pu, MMLM_CHROMA_IDX);
      bool isMultiCccmLeftEnabled = PU::cccmMultiModeAvail(pu, MMLM_L_IDX);
      bool isMultiCccmTopEnabled = PU::cccmMultiModeAvail(pu, MMLM_T_IDX);
#endif
#if JVET_AD0202_CCCM_MDF
      bool isMultiCccmFullEnabled2 = PU::isMultiCccmWithMdf(pu, MMLM_CHROMA_IDX);
      bool isMultiCccmLeftEnabled2 = PU::isMultiCccmWithMdf(pu, MMLM_L_IDX);
      bool isMultiCccmTopEnabled2 = PU::isMultiCccmWithMdf(pu, MMLM_T_IDX);
#endif

      const UnitArea localUnitArea(cs.area.chromaFormat, Area(0, 0, (pu.Cb().width) << 1, (pu.Cb().height) << 1));
#if JVET_AD0202_CCCM_MDF
      PelUnitBuf cccmStorage[2][TOTAL_NUM_CCCM_MODES];
#else
      PelUnitBuf cccmStorage[2][CCCM_NUM_MODES];
#endif

      pu.cccmFlag = 1;

#if JVET_AD0202_CCCM_MDF
      pu.cccmNoSubFlag = 1;
      xGetLumaRecPixels(pu, pu.Cb());
      pu.cccmNoSubFlag = 0;
      xGetLumaRecPixels(pu, pu.Cb());
      xGetLumaRecPixels(pu, pu.Cb(), 1);
      xGetLumaRecPixels(pu, pu.Cb(), 2);
      xGetLumaRecPixels(pu, pu.Cb(), 3);
#endif

      for (int sub = 0; sub < pu.cu->slice->getSPS()->getUseCccm(); sub++)
      {
        pu.cccmNoSubFlag = sub;

#if !JVET_AD0202_CCCM_MDF
        xGetLumaRecPixels(pu, pu.Cb());
#endif

        bool isCCCMEnabled = false;

        for (int idx = 0; idx < CCCM_NUM_MODES; idx++)
        {
#if JVET_AC0054_GLCCCM
          if (sub && idx >= CCCM_NUM_MODES / 2)
          {
            continue;
          }
#endif
          int mode = chromaCandCccmModes[idx];
          if (idx == 0)
          {
            isCCCMEnabled = isCccmFullEnabled;
            pu.cccmFlag = 1;
          }
          else if (idx == 1)
          {
            isCCCMEnabled = isCccmLeftEnabled;
            pu.cccmFlag = 2;
          }
          else if (idx == 2)
          {
            isCCCMEnabled = isCccmTopEnabled;
            pu.cccmFlag = 3;
          }
#if MMLM
          else if (idx == 3)
          {
            isCCCMEnabled = isMultiCccmFullEnabled;
            pu.cccmFlag = 1;
          }
          else if (idx == 4)
          {
            isCCCMEnabled = isMultiCccmLeftEnabled;
            pu.cccmFlag = 2;
          }
          else if (idx == 5)
          {
            isCCCMEnabled = isMultiCccmTopEnabled;
            pu.cccmFlag = 3;
          }
#endif
            
#if JVET_AC0054_GLCCCM
          if (idx < CCCM_NUM_MODES / 2)
          {
            pu.glCccmFlag = 0;
          }
          else
          {
            pu.glCccmFlag = 1;
#if MMLM
            isCCCMEnabled = idx == 6 ? isCccmFullEnabled
            : idx == 7 ? isCccmLeftEnabled
            : idx == 8 ? isCccmTopEnabled
            : idx == 9 ? isMultiCccmFullEnabled
            : idx == 10 ? isMultiCccmLeftEnabled : isMultiCccmTopEnabled;
            pu.cccmFlag =  idx == 6 ? 1
            : idx == 7 ? 2
            : idx == 8 ? 3
            : idx == 9 ? 1
            : idx == 10 ? 2 : 3;
#else
            isCCCMEnabled = idx == 3 ? isCccmFullEnabled
            : idx == 4 ? isCccmLeftEnabled : isCccmTopEnabled;
            pu.cccmFlag =   idx == 3 ? 1
            : idx == 4 ? 2 : 3;
#endif

#if JVET_AD0202_CCCM_MDF
            if (isCCCMEnabled)
            {
              if (m_skipCCCMwithMdfSATD)
              {
                if (m_isCccmWithMdfEnabledInRdo[4][mode] == 0)
                {
                  continue;
                }
              }
            }
#endif
         }
#endif

          if (isCCCMEnabled)
          {
#if JVET_AD0202_CCCM_MDF
            for (int32_t filterIdx = 0; filterIdx < CCCM_NUM_PRED_FILTER; filterIdx++)
            {
            if (filterIdx > 0)
            {
              if (sub == 1 || idx > 5)
              {
                continue;
              }

              if (m_skipCCCMwithMdfSATD)
              {
                if (m_isCccmWithMdfEnabledInRdo[filterIdx][mode] == 0)
                {
                  continue;
                }
              }

              if (mode == MMLM_CHROMA_IDX && !isMultiCccmFullEnabled2)
              {
                continue;
              }
              else if (mode == MMLM_L_IDX && !isMultiCccmLeftEnabled2)
              {
                continue;
              }
              else if (mode == MMLM_T_IDX && !isMultiCccmTopEnabled2)
              {
                continue;
              }
            }
            else if (sub == 0 && idx <= 5)
            {
              if (m_skipCCCMwithMdfSATD)
              {
                if (m_isCccmWithMdfEnabledInRdo[filterIdx][mode] == 0)
                {
                  continue;
                }
              }
            }

            pu.cccmMultiFilterIdx = filterIdx;
#endif
            pu.intraDir[1] = mode; // temporary assigned, for SATD checking.

            if ( ( sub == 1 ) && m_skipCCCMSATD )
            {
              if (m_isCccmNoSubModeEnabledInRdo[mode] == 0)
              {
                continue;
              }
            }

            int64_t sad = 0;
            int64_t sadCb = 0;
            int64_t satdCb = 0;
            int64_t sadCr = 0;
            int64_t satdCr = 0;
            CodingStructure& cs = *(pu.cs);

            DistParam distParamSadCb;
            DistParam distParamSatdCb;
            DistParam distParamSadCr;
            DistParam distParamSatdCr;

#if JVET_AD0202_CCCM_MDF
            const int cccmBufferIdx = filterIdx * CCCM_NUM_MODES + idx;
            cccmStorage[sub][cccmBufferIdx] = m_cccmStorage[sub][cccmBufferIdx].getBuf(localUnitArea);
#else
            cccmStorage[sub][idx] = m_cccmStorage[sub][idx].getBuf(localUnitArea);
#endif

            CompArea areaCb = pu.Cb();
            PelBuf orgCb = cs.getOrgBuf(areaCb);
            CompArea areaCr = pu.Cr();
            PelBuf orgCr = cs.getOrgBuf(areaCr);

#if JVET_AD0202_CCCM_MDF
            m_pcRdCost->setDistParam(distParamSadCb, orgCb, cccmStorage[sub][cccmBufferIdx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, false);
            m_pcRdCost->setDistParam(distParamSatdCb, orgCb, cccmStorage[sub][cccmBufferIdx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, true);
#else
            m_pcRdCost->setDistParam(distParamSadCb, orgCb, cccmStorage[sub][idx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, false);
            m_pcRdCost->setDistParam(distParamSatdCb, orgCb, cccmStorage[sub][idx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, true);
#endif
            distParamSadCb.applyWeight = false;
            distParamSatdCb.applyWeight = false;
#if JVET_AD0202_CCCM_MDF
            m_pcRdCost->setDistParam(distParamSadCr, orgCr, cccmStorage[sub][cccmBufferIdx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, false);
            m_pcRdCost->setDistParam(distParamSatdCr, orgCr, cccmStorage[sub][cccmBufferIdx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, true);
#else
            m_pcRdCost->setDistParam(distParamSadCr, orgCr, cccmStorage[sub][idx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, false);
            m_pcRdCost->setDistParam(distParamSatdCr, orgCr, cccmStorage[sub][idx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, true);
#endif
            distParamSadCr.applyWeight = false;
            distParamSatdCr.applyWeight = false;

#if JVET_AD0188_CCP_MERGE
            pu.curCand = {};
#endif
#if JVET_AD0202_CCCM_MDF
            predIntraCCCM(pu, cccmStorage[sub][cccmBufferIdx].Cb(), cccmStorage[sub][cccmBufferIdx].Cr(), mode);
#else
            predIntraCCCM(pu, cccmStorage[sub][idx].Cb(), cccmStorage[sub][idx].Cr(), mode);
#endif
#if JVET_AD0188_CCP_MERGE
#if JVET_AD0202_CCCM_MDF
            m_ccmParamsStorage[sub][cccmBufferIdx] = pu.curCand;
#else
            m_ccmParamsStorage[sub][idx] = pu.curCand;
#endif
#endif
            sadCb = distParamSadCb.distFunc(distParamSadCb) * 2;
            satdCb = distParamSatdCb.distFunc(distParamSatdCb);
            sad += std::min(sadCb, satdCb);
            sadCr = distParamSadCr.distFunc(distParamSadCr) * 2;
            satdCr = distParamSatdCr.distFunc(distParamSatdCr);
            sad += std::min(sadCr, satdCr);

#if JVET_AD0202_CCCM_MDF
            satdCccmSortedCost[sub][cccmBufferIdx] = sad;
#else
            satdCccmSortedCost[sub][idx] = sad;
#endif

            if (sad < bestCccmCost[sub])
            {
              bestCccmCost[sub] = sad;
            }
#if JVET_AD0202_CCCM_MDF
            }
#endif
          }
        }
      }
#if JVET_AC0054_GLCCCM
      int tempGlCccmFlag = 0;
#endif
      int tempCccmIdx = 0;
      int64_t tempCccmCost = 0;
#if JVET_AC0054_GLCCCM
#if JVET_AD0202_CCCM_MDF 
      for (int i = 1; i < 7; i++)
#else
      for (int i = 1; i < CCCM_NUM_MODES; i++)
#endif
#else
#if MMLM
      for (int i = 1; i < 4; i++)
#else
      for (int i = 1; i < 3; i++)
#endif
#endif
      {
#if JVET_AD0202_CCCM_MDF
        for (int j = i + 1; j < VALID_NUM_CCCM_MODES; j++)
#else
        for (int j = i + 1; j < CCCM_NUM_MODES; j++)
#endif
        {
          if (satdCccmSortedCost[0][j] < satdCccmSortedCost[0][i])
          {
            tempCccmIdx = satdCccmModeList[0][i];
            satdCccmModeList[0][i] = satdCccmModeList[0][j];
            satdCccmModeList[0][j] = tempCccmIdx;

            tempCccmCost = satdCccmSortedCost[0][i];
            satdCccmSortedCost[0][i] = satdCccmSortedCost[0][j];
            satdCccmSortedCost[0][j] = tempCccmCost;
#if JVET_AC0054_GLCCCM
            tempGlCccmFlag = satdCccmFlagList[i];
            satdCccmFlagList[i] = satdCccmFlagList[j];
            satdCccmFlagList[j] = tempGlCccmFlag;
#endif
#if JVET_AD0202_CCCM_MDF 
            tempCccmIdx = satdCccmFilterIndex[i];
            satdCccmFilterIndex[i] = satdCccmFilterIndex[j];
            satdCccmFilterIndex[j] = tempCccmIdx;
#endif
          }
        }
      }

#if MMLM
      bool isCccmModeEnabledInRdo[2][MMLM_T_IDX + 1] = { false };
#if !JVET_AD0202_CCCM_MDF
      isCccmModeEnabledInRdo[0][satdCccmModeList[0][0]] = true;
#endif
#if JVET_AC0054_GLCCCM
      bool isGlCccmModeEnabledInRdo[MMLM_T_IDX + 1] = { false };
#if !JVET_AD0202_CCCM_MDF
      if (satdCccmFlagList[0] == 2)
      {
        isCccmModeEnabledInRdo[0][satdCccmModeList[0][0]] = false;
        isGlCccmModeEnabledInRdo[satdCccmModeList[0][0]] = true;
      }
#endif
#endif
#if JVET_AD0202_CCCM_MDF 
      bool isCccmWithMulDownSamplingEnabledInRdo[MMLM_T_IDX + 1][CCCM_NUM_PRED_FILTER] = { false };
      isCccmWithMulDownSamplingEnabledInRdo[satdCccmModeList[0][0]][satdCccmFilterIndex[0]] = true;
      for (int i = 1; i < 7; i++)
#else
      for (int i = 1; i < 4; i++)
#endif
#else
      bool isCccmModeEnabledInRdo[MDLM_T_IDX + 1] = { false };
      isCccmModeEnabledInRdo[satdCccmModeList[0]] = true;
#if JVET_AC0054_GLCCCM
      bool isGlCccmModeEnabledInRdo[MDLM_T_IDX + 1] = { false };
      if (satdCccmFlagList[0] == 2)
      {
        isCccmModeEnabledInRdo[0][satdCccmModeList[0][0]] = false;
        isGlCccmModeEnabledInRdo[satdCccmModeList[0][0]] = true;
      }
#endif
      for (int i = 1; i < 3; i++)
#endif
      {
        if (satdCccmSortedCost[0][i] >= 1.15 * bestCccmCost[0])
        {
          break;
        }
#if JVET_AC0054_GLCCCM
        if (satdCccmFlagList[i] == 2)
        {
          isGlCccmModeEnabledInRdo[satdCccmModeList[0][i]] = true;
        }
        else
        {
#if JVET_AD0202_CCCM_MDF 
          isCccmWithMulDownSamplingEnabledInRdo[satdCccmModeList[0][i]][satdCccmFilterIndex[i]] = true;
#else
          isCccmModeEnabledInRdo[0][satdCccmModeList[0][i]] = true;
#endif
        }
#else
        isCccmModeEnabledInRdo[0][satdCccmModeList[0][i]] = true;
#endif
      }
#if JVET_AD0202_CCCM_MDF
      if (m_skipCCCMwithMdfSATD == false)
      {
        m_skipCCCMwithMdfSATD = true;
        for (int i = LM_CHROMA_IDX; i <= MMLM_T_IDX; i++)
        {
          m_isCccmWithMdfEnabledInRdo[4][i] = isGlCccmModeEnabledInRdo[i] ? 1 : 0;

          for (int j = 0; j < 4; j++)
          {
            m_isCccmWithMdfEnabledInRdo[j][i] = isCccmWithMulDownSamplingEnabledInRdo[i][j] ? 1 : 0;
          }
        }
      }
#endif

      if (pu.cu->slice->getSPS()->getUseCccm() == 2)
      {
        if (bestCccmCost[1] < bestCccmCost[0])
        {
#if MMLM
#if JVET_AD0202_CCCM_MDF
          for (int i = 1; i < 7; i++)
#else
          for (int i = 0; i < 4; i++)
#endif
#else
          for (int i = 0; i < 3; i++)
#endif
          {
#if JVET_AD0202_CCCM_MDF
            if (isCccmWithMulDownSamplingEnabledInRdo[satdCccmModeList[0][i]][satdCccmFilterIndex[i]] && (satdCccmSortedCost[0][i] >= 1.2 * bestCccmCost[1]))
            {
              isCccmWithMulDownSamplingEnabledInRdo[satdCccmModeList[0][i]][satdCccmFilterIndex[i]] = false;
            }
#else
            if (isCccmModeEnabledInRdo[0][satdCccmModeList[0][i]] && (satdCccmSortedCost[0][i] >= 1.2 * bestCccmCost[1]))
            {
              isCccmModeEnabledInRdo[0][satdCccmModeList[0][i]] = false;
            }
#endif
            else
            {
              bestCccmCost[0] = satdCccmSortedCost[0][i];
            }
          }
        }
        else
        {
          bestCccmCost[1] = bestCccmCost[0];
        }

        tempCccmIdx = 0;
        tempCccmCost = 0;
        for (int i = 1; i < 2; i++)
        {
          for (int j = i + 1; j < 6; j++)
          {
            if (satdCccmSortedCost[1][j] < satdCccmSortedCost[1][i])
            {
              tempCccmIdx = satdCccmModeList[1][i];
              satdCccmModeList[1][i] = satdCccmModeList[1][j];
              satdCccmModeList[1][j] = tempCccmIdx;

              tempCccmCost = satdCccmSortedCost[1][i];
              satdCccmSortedCost[1][i] = satdCccmSortedCost[1][j];
              satdCccmSortedCost[1][j] = tempCccmCost;
            }
          }
        }

        isCccmModeEnabledInRdo[1][satdCccmModeList[1][0]] = true;
        for (int i = 1; i < 2; i++)
        {
          if (satdCccmSortedCost[1][i] >= CCCM_NO_SUB_WEIGHT * bestCccmCost[1])
          {
#if !JVET_AD0202_CCCM_MDF
#if JVET_AC0054_GLCCCM
            if (satdCccmSortedCost[1][i - 1] > bestCccmCost[0] && satdCccmFlagList[0] != 2)
#else
            if (satdCccmSortedCost[1][i - 1] > bestCccmCost[0])
#endif
            {
              bestCccmCost[0] = satdCccmSortedCost[1][i - 1];
            }
            bestCccmCost[1] = satdCccmSortedCost[1][i - 1];
#endif
            break;
          }
          isCccmModeEnabledInRdo[1][satdCccmModeList[1][i]] = true;
        }
#if JVET_AD0202_CCCM_MDF
        bestCccmCost[1] = (isCccmModeEnabledInRdo[1][satdCccmModeList[1][1]] && satdCccmSortedCost[1][0] < satdCccmSortedCost[1][1]) ? satdCccmSortedCost[1][1] : satdCccmSortedCost[1][0];
        bestCccmCost[0] = (bestCccmCost[1] > bestCccmCost[0]) ? bestCccmCost[1] : bestCccmCost[0];
        bestCccmCost[0] = (satdCccmSortedCost[0][0] > bestCccmCost[0]) ? satdCccmSortedCost[0][0] : bestCccmCost[0];
#endif
        if (m_skipCCCMSATD == false)
        {
          m_skipCCCMSATD = true;
          for (int i = 0; i < (MMLM_T_IDX + 1); i++)
          {
            m_isCccmNoSubModeEnabledInRdo[i] = isCccmModeEnabledInRdo[1][i];
          }
        }
      }

      pu.cccmFlag = 0;
      pu.cccmNoSubFlag = 0;
#if JVET_AC0054_GLCCCM
      pu.glCccmFlag = 0;
#endif
#if JVET_AD0202_CCCM_MDF 
      pu.cccmMultiFilterIdx = 0;
#endif
#else
      int64_t satdCccmSortedCost[CCCM_NUM_MODES];
      int satdCccmModeList[CCCM_NUM_MODES];

      for (int i = 0; i < CCCM_NUM_MODES; i++)
      {
        satdCccmSortedCost[i] = LLONG_MAX; // for the mode not pre-select by SATD, do RDO by default, so set the initial value 0.
        satdCccmModeList[i] = chromaCandCccmModes[i];
      }
      int64_t bestCccmCost = LLONG_MAX;

      bool isCccmFullEnabled = PU::cccmSingleModeAvail(pu, LM_CHROMA_IDX);
      bool isCccmLeftEnabled = PU::isLeftCccmMode(pu, MDLM_L_IDX);
      bool isCccmTopEnabled = PU::isTopCccmMode(pu, MDLM_T_IDX);
#if MMLM
      bool isMultiCccmFullEnabled = PU::cccmMultiModeAvail(pu, MMLM_CHROMA_IDX);
      bool isMultiCccmLeftEnabled = PU::cccmMultiModeAvail(pu, MMLM_L_IDX);
      bool isMultiCccmTopEnabled = PU::cccmMultiModeAvail(pu, MMLM_T_IDX);
#endif

      const UnitArea localUnitArea(cs.area.chromaFormat, Area(0, 0, (pu.Cb().width) << 1, (pu.Cb().height) << 1));
      PelUnitBuf cccmStorage[CCCM_NUM_MODES];

      pu.cccmFlag = 1;
      xGetLumaRecPixels(pu, pu.Cb());

      bool isCCCMEnabled = false;

      for (int idx = 0; idx < CCCM_NUM_MODES; idx++)
      {
        int mode = chromaCandCccmModes[idx];
        if (idx == 0)
        {
          isCCCMEnabled = isCccmFullEnabled;
          pu.cccmFlag = 1;
        }
        else if (idx == 1)
        {
          isCCCMEnabled = isCccmLeftEnabled;
          pu.cccmFlag = 2;
        }
        else if (idx == 2)
        {
          isCCCMEnabled = isCccmTopEnabled;
          pu.cccmFlag = 3;
        }
#if MMLM
        else if (idx == 3)
        {
          isCCCMEnabled = isMultiCccmFullEnabled;
          pu.cccmFlag = 1;
        }
        else if (idx == 4)
        {
          isCCCMEnabled = isMultiCccmLeftEnabled;
          pu.cccmFlag = 2;
        }
        else if (idx == 5)
        {
          isCCCMEnabled = isMultiCccmTopEnabled;
          pu.cccmFlag = 3;
        }
#endif

        if (isCCCMEnabled)
        {
          pu.intraDir[1] = mode; // temporary assigned, for SATD checking.

          int64_t sad = 0;
          int64_t sadCb = 0;
          int64_t satdCb = 0;
          int64_t sadCr = 0;
          int64_t satdCr = 0;
          CodingStructure& cs = *(pu.cs);

          DistParam distParamSadCb;
          DistParam distParamSatdCb;
          DistParam distParamSadCr;
          DistParam distParamSatdCr;

          cccmStorage[idx] = m_cccmStorage[idx].getBuf(localUnitArea);

          CompArea areaCb = pu.Cb();
          PelBuf orgCb = cs.getOrgBuf(areaCb);
          CompArea areaCr = pu.Cr();
          PelBuf orgCr = cs.getOrgBuf(areaCr);

          m_pcRdCost->setDistParam(distParamSadCb, orgCb, cccmStorage[idx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, false);
          m_pcRdCost->setDistParam(distParamSatdCb, orgCb, cccmStorage[idx].Cb(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cb, true);
          distParamSadCb.applyWeight = false;
          distParamSatdCb.applyWeight = false;
          m_pcRdCost->setDistParam(distParamSadCr, orgCr, cccmStorage[idx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, false);
          m_pcRdCost->setDistParam(distParamSatdCr, orgCr, cccmStorage[idx].Cr(), pu.cs->sps->getBitDepth(CHANNEL_TYPE_CHROMA), COMPONENT_Cr, true);

          distParamSadCr.applyWeight = false;
          distParamSatdCr.applyWeight = false;

#if JVET_AD0188_CCP_MERGE
            pu.curCand = {};
#endif
          predIntraCCCM(pu, cccmStorage[idx].Cb(), cccmStorage[idx].Cr(), mode);
#if JVET_AD0188_CCP_MERGE
          m_ccmParamsStorage[idx] = pu.curCand;
#endif

          sadCb = distParamSadCb.distFunc(distParamSadCb) * 2;
          satdCb = distParamSatdCb.distFunc(distParamSatdCb);
          sad += std::min(sadCb, satdCb);
          sadCr = distParamSadCr.distFunc(distParamSadCr) * 2;