EncModeCtrl.cpp

  cu          = encInfo.cu;
  pu          = encInfo.pu;
#if REUSE_CU_RESULTS_WITH_MULTIPLE_TUS
  CHECKD( !( encInfo.numTus > 0 ), "Empty tus array" );
  for( int i = 0; i < encInfo.numTus; i++ )
  {
    TransformUnit  &tu = cs.addTU( encInfo.tus[i], partitioner.chType );

    for( auto &blk : tu.blocks )
    {
      if( blk.valid() ) tu.copyComponentFrom( encInfo.tus[i], blk.compID );
    }
  }
#else
  for( auto &blk : tu.blocks )
  {
    if( blk.valid() ) tu.copyComponentFrom( encInfo.tu, blk.compID );
  }
#endif

  testMode    = encInfo.testMode;

  return true;
}

#endif

static bool interHadActive( const ComprCUCtx& ctx )
{
  return ctx.interHad != 0;
}

//////////////////////////////////////////////////////////////////////////
// EncModeCtrlQTBT
//////////////////////////////////////////////////////////////////////////

EncModeCtrlMTnoRQT::EncModeCtrlMTnoRQT()
{
#if !REUSE_CU_RESULTS
  CacheBlkInfoCtrl::create();
#endif
}

EncModeCtrlMTnoRQT::~EncModeCtrlMTnoRQT()
{
#if !REUSE_CU_RESULTS
  CacheBlkInfoCtrl::destroy();
#endif
}

#if REUSE_CU_RESULTS
void EncModeCtrlMTnoRQT::create( const EncCfg& cfg )
{
  CacheBlkInfoCtrl::create();
  BestEncInfoCache::create( cfg.getChromaFormatIdc() );
#if JVET_M0140_SBT
  SaveLoadEncInfoSbt::create();
#endif
}

void EncModeCtrlMTnoRQT::destroy()
{
  CacheBlkInfoCtrl::destroy();
  BestEncInfoCache::destroy();
#if JVET_M0140_SBT
  SaveLoadEncInfoSbt::destroy();
#endif
}

#endif
void EncModeCtrlMTnoRQT::initCTUEncoding( const Slice &slice )
{
  CacheBlkInfoCtrl::init( slice );
#if REUSE_CU_RESULTS
  BestEncInfoCache::init( slice );
#endif
#if JVET_M0140_SBT
  SaveLoadEncInfoSbt::init( slice );
#endif

  CHECK( !m_ComprCUCtxList.empty(), "Mode list is not empty at the beginning of a CTU" );

  m_slice             = &slice;
#if ENABLE_SPLIT_PARALLELISM
  m_runNextInParallel      = false;
#endif

  if( m_pcEncCfg->getUseE0023FastEnc() )
  {
    if (m_pcEncCfg->getUseCompositeRef())
      m_skipThreshold = ( ( slice.getMinPictureDistance() <= PICTURE_DISTANCE_TH * 2 ) ? FAST_SKIP_DEPTH : SKIP_DEPTH );
    else
      m_skipThreshold = ((slice.getMinPictureDistance() <= PICTURE_DISTANCE_TH) ? FAST_SKIP_DEPTH : SKIP_DEPTH);

  }
  else
  {
    m_skipThreshold = SKIP_DEPTH;
  }
}


void EncModeCtrlMTnoRQT::initCULevel( Partitioner &partitioner, const CodingStructure& cs )
{
  // Min/max depth
  unsigned minDepth = 0;
  unsigned maxDepth = g_aucLog2[cs.sps->getCTUSize()] - g_aucLog2[cs.sps->getMinQTSize( m_slice->getSliceType(), partitioner.chType )];
  if( m_pcEncCfg->getUseFastLCTU() )
  {
    if( auto adPartitioner = dynamic_cast<AdaptiveDepthPartitioner*>( &partitioner ) )
    {
      // LARGE CTU
      adPartitioner->setMaxMinDepth( minDepth, maxDepth, cs );
    }
  }

  m_ComprCUCtxList.push_back( ComprCUCtx( cs, minDepth, maxDepth, NUM_EXTRA_FEATURES ) );

#if ENABLE_SPLIT_PARALLELISM
  if( m_runNextInParallel )
  {
    for( auto &level : m_ComprCUCtxList )
    {
      CHECK( level.isLevelSplitParallel, "Tring to parallelize a level within parallel execution!" );
    }
    CHECK( cs.picture->scheduler.getSplitJobId() == 0, "Trying to run a parallel level although jobId is 0!" );
    m_runNextInParallel                          = false;
    m_ComprCUCtxList.back().isLevelSplitParallel = true;
  }

#endif
  const CodingUnit* cuLeft  = cs.getCU( cs.area.blocks[partitioner.chType].pos().offset( -1, 0 ), partitioner.chType );
  const CodingUnit* cuAbove = cs.getCU( cs.area.blocks[partitioner.chType].pos().offset( 0, -1 ), partitioner.chType );

  const bool qtBeforeBt = ( (  cuLeft  &&  cuAbove  && cuLeft ->qtDepth > partitioner.currQtDepth && cuAbove->qtDepth > partitioner.currQtDepth )
                         || (  cuLeft  && !cuAbove  && cuLeft ->qtDepth > partitioner.currQtDepth )
                         || ( !cuLeft  &&  cuAbove  && cuAbove->qtDepth > partitioner.currQtDepth )
                         || ( !cuAbove && !cuLeft   && cs.area.lwidth() >= ( 32 << cs.slice->getDepth() ) ) )
                         && ( cs.area.lwidth() > ( cs.pcv->getMinQtSize( *cs.slice, partitioner.chType ) << 1 ) );

  // set features
  ComprCUCtx &cuECtx  = m_ComprCUCtxList.back();
  cuECtx.set( BEST_NON_SPLIT_COST,  MAX_DOUBLE );
  cuECtx.set( BEST_VERT_SPLIT_COST, MAX_DOUBLE );
  cuECtx.set( BEST_HORZ_SPLIT_COST, MAX_DOUBLE );
  cuECtx.set( BEST_TRIH_SPLIT_COST, MAX_DOUBLE );
  cuECtx.set( BEST_TRIV_SPLIT_COST, MAX_DOUBLE );
  cuECtx.set( DO_TRIH_SPLIT,        cs.sps->getSpsNext().getMTTMode() & 1 );
  cuECtx.set( DO_TRIV_SPLIT,        cs.sps->getSpsNext().getMTTMode() & 1 );
  cuECtx.set( BEST_IMV_COST,        MAX_DOUBLE * .5 );
  cuECtx.set( BEST_NO_IMV_COST,     MAX_DOUBLE * .5 );
  cuECtx.set( QT_BEFORE_BT,         qtBeforeBt );
  cuECtx.set( DID_QUAD_SPLIT,       false );
  cuECtx.set( IS_BEST_NOSPLIT_SKIP, false );
  cuECtx.set( MAX_QT_SUB_DEPTH,     0 );

  // QP
  int baseQP = cs.baseQP;
  if( m_pcEncCfg->getUseAdaptiveQP() )
  {
    if (!CS::isDualITree(cs) || isLuma(partitioner.chType))
    {
      baseQP = Clip3(-cs.sps->getQpBDOffset(CHANNEL_TYPE_LUMA), MAX_QP, baseQP + xComputeDQP(cs, partitioner));
    }
  }

  int minQP = baseQP;
  int maxQP = baseQP;

#if SHARP_LUMA_DELTA_QP
  if( m_pcEncCfg->getLumaLevelToDeltaQPMapping().isEnabled() )
  {
    if( partitioner.currDepth <= cs.pps->getMaxCuDQPDepth() )
    {
      CompArea clipedArea = clipArea( cs.area.Y(), cs.picture->Y() );
      // keep using the same m_QP_LUMA_OFFSET in the same CTU
      m_lumaQPOffset = calculateLumaDQP( cs.getOrgBuf( clipedArea ) );
    }
  }
#endif

  xGetMinMaxQP( minQP, maxQP, cs, partitioner, baseQP, *cs.sps, *cs.pps, true );
  bool checkIbc = true;
  if (cs.chType == CHANNEL_TYPE_CHROMA)
  {
    IbcLumaCoverage ibcLumaCoverage = cs.getIbcLumaCoverage(cs.area.Cb());
    switch (ibcLumaCoverage)
    {
    case IBC_LUMA_COVERAGE_FULL:
      // check IBC 
      break;
    case IBC_LUMA_COVERAGE_PARTIAL:
      // do not check IBC
      checkIbc = false;
      break;
    case IBC_LUMA_COVERAGE_NONE:
      // do not check IBC
      checkIbc = false;
      break;
    default:
      THROW("Unknown IBC luma coverage type");
    }
  }
  // Add coding modes here
  // NOTE: Working back to front, as a stack, which is more efficient with the container
  // NOTE: First added modes will be processed at the end.

  //////////////////////////////////////////////////////////////////////////
  // Add unit split modes

  if( !cuECtx.get<bool>( QT_BEFORE_BT ) )
  {
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_QT, ETO_STANDARD, qp, false } );
    }
  }

  if( partitioner.canSplit( CU_TRIV_SPLIT, cs ) )
  {
    // add split modes
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_TT_V, ETO_STANDARD, qp, false } );
    }
  }

  if( partitioner.canSplit( CU_TRIH_SPLIT, cs ) )
  {
    // add split modes
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_TT_H, ETO_STANDARD, qp, false } );
    }
  }

  if( partitioner.canSplit( CU_VERT_SPLIT, cs ) )
  {
    // add split modes
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_BT_V, ETO_STANDARD, qp, false } );
    }
    m_ComprCUCtxList.back().set( DID_VERT_SPLIT, true );
  }
  else
  {
    m_ComprCUCtxList.back().set( DID_VERT_SPLIT, false );
  }

  if( partitioner.canSplit( CU_HORZ_SPLIT, cs ) )
  {
    // add split modes
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_BT_H, ETO_STANDARD, qp, false } );
    }
    m_ComprCUCtxList.back().set( DID_HORZ_SPLIT, true );
  }
  else
  {
    m_ComprCUCtxList.back().set( DID_HORZ_SPLIT, false );
  }

  if( cuECtx.get<bool>( QT_BEFORE_BT ) )
  {
    for( int qp = maxQP; qp >= minQP; qp-- )
    {
      m_ComprCUCtxList.back().testModes.push_back( { ETM_SPLIT_QT, ETO_STANDARD, qp, false } );
    }
  }

  m_ComprCUCtxList.back().testModes.push_back( { ETM_POST_DONT_SPLIT } );

  xGetMinMaxQP( minQP, maxQP, cs, partitioner, baseQP, *cs.sps, *cs.pps, false );

  bool useLossless = false;
  int  lowestQP = minQP;
  if( cs.pps->getTransquantBypassEnabledFlag() )
  {
    useLossless = true; // mark that the first iteration is to cost TQB mode.
    minQP = minQP - 1;  // increase loop variable range by 1, to allow testing of TQB mode along with other QPs

    if( m_pcEncCfg->getCUTransquantBypassFlagForceValue() )
    {
      maxQP = minQP;
    }
  }

  //////////////////////////////////////////////////////////////////////////
  // Add unit coding modes: Intra, InterME, InterMerge ...

  for( int qpLoop = maxQP; qpLoop >= minQP; qpLoop-- )
  {
    const int  qp       = std::max( qpLoop, lowestQP );
    const bool lossless = useLossless && qpLoop == minQP;
#if REUSE_CU_RESULTS
    const bool isReusingCu = isValid( cs, partitioner, qp );
    cuECtx.set( IS_REUSING_CU, isReusingCu );
    if( isReusingCu )
    {
      m_ComprCUCtxList.back().testModes.push_back( {ETM_RECO_CACHED, ETO_STANDARD, qp, lossless} );
    }
#endif
    // add intra modes
    m_ComprCUCtxList.back().testModes.push_back( { ETM_IPCM,  ETO_STANDARD, qp, lossless } );
    m_ComprCUCtxList.back().testModes.push_back( { ETM_INTRA, ETO_STANDARD, qp, lossless } );
    // add ibc mode to intra path
#if JVET_M0483_IBC
    if (cs.sps->getIBCFlag() && checkIbc)
#else
    if (cs.sps->getSpsNext().getIBCMode() && checkIbc )
#endif
    {
      m_ComprCUCtxList.back().testModes.push_back({ ETM_IBC,         ETO_STANDARD,  qp, lossless });
      if (cs.chType == CHANNEL_TYPE_LUMA)
      {
        m_ComprCUCtxList.back().testModes.push_back({ ETM_IBC_MERGE,   ETO_STANDARD,  qp, lossless });
      }
    }
  }

  // add first pass modes
  if( !m_slice->isIRAP() )
  {
    for( int qpLoop = maxQP; qpLoop >= minQP; qpLoop-- )
    {
      const int  qp       = std::max( qpLoop, lowestQP );
      const bool lossless = useLossless && qpLoop == minQP;
#if JVET_M0246_AFFINE_AMVR
      if( m_pcEncCfg->getIMV() || m_pcEncCfg->getUseAffineAmvr() )
#else
      if( m_pcEncCfg->getIMV() )
#endif
      {
#if JVET_M0246_AFFINE_AMVR
        if( m_pcEncCfg->getIMV() == IMV_4PEL || m_pcEncCfg->getUseAffineAmvr() )
#else
        if( m_pcEncCfg->getIMV() == IMV_4PEL )
#endif
        {
          int imv = m_pcEncCfg->getIMV4PelFast() ? 3 : 2;
          m_ComprCUCtxList.back().testModes.push_back( { ETM_INTER_ME, EncTestModeOpts( imv << ETO_IMV_SHIFT ), qp, lossless } );
        }
        m_ComprCUCtxList.back().testModes.push_back( { ETM_INTER_ME, EncTestModeOpts( 1 << ETO_IMV_SHIFT ), qp, lossless } );
      }
      // add inter modes
      if( m_pcEncCfg->getUseEarlySkipDetection() )
      {
        if( cs.sps->getSpsNext().getUseTriangle() && cs.slice->isInterB() )
        {
          m_ComprCUCtxList.back().testModes.push_back( { ETM_MERGE_TRIANGLE, ETO_STANDARD, qp, lossless } );
        }
        m_ComprCUCtxList.back().testModes.push_back( { ETM_MERGE_SKIP,  ETO_STANDARD, qp, lossless } );
        if ( cs.sps->getSpsNext().getUseAffine() || cs.sps->getSBTMVPEnabledFlag() )
        {
          m_ComprCUCtxList.back().testModes.push_back( { ETM_AFFINE,    ETO_STANDARD, qp, lossless } );
        }
        m_ComprCUCtxList.back().testModes.push_back( { ETM_INTER_ME,    ETO_STANDARD, qp, lossless } );
      }
      else
      {
        m_ComprCUCtxList.back().testModes.push_back( { ETM_INTER_ME,    ETO_STANDARD, qp, lossless } );
        if( cs.sps->getSpsNext().getUseTriangle() && cs.slice->isInterB() )
        {
          m_ComprCUCtxList.back().testModes.push_back( { ETM_MERGE_TRIANGLE, ETO_STANDARD, qp, lossless } );
        }
        m_ComprCUCtxList.back().testModes.push_back( { ETM_MERGE_SKIP,  ETO_STANDARD, qp, lossless } );
        if ( cs.sps->getSpsNext().getUseAffine() || cs.sps->getSBTMVPEnabledFlag() )
        {
          m_ComprCUCtxList.back().testModes.push_back( { ETM_AFFINE,    ETO_STANDARD, qp, lossless } );
        }
      }
#if JVET_M0253_HASH_ME
      if (m_pcEncCfg->getUseHashME())
      {
        if ((cs.area.lwidth() == cs.area.lheight() && cs.area.lwidth() <= 64 && cs.area.lwidth() >= 4) || (cs.area.lwidth() == 4 && cs.area.lheight() == 8) || (cs.area.lwidth() == 8 && cs.area.lheight() == 4))
        {
          m_ComprCUCtxList.back().testModes.push_back({ ETM_HASH_INTER, ETO_STANDARD, qp, lossless });
        }
      }
#endif
    }
  }

  // ensure to skip unprobable modes
  if( !tryModeMaster( m_ComprCUCtxList.back().testModes.back(), cs, partitioner ) )
  {
    nextMode( cs, partitioner );
  }

  m_ComprCUCtxList.back().lastTestMode = EncTestMode();
}

void EncModeCtrlMTnoRQT::finishCULevel( Partitioner &partitioner )
{
  m_ComprCUCtxList.pop_back();
}


bool EncModeCtrlMTnoRQT::tryMode( const EncTestMode& encTestmode, const CodingStructure &cs, Partitioner& partitioner )
{
  ComprCUCtx& cuECtx = m_ComprCUCtxList.back();

  // Fast checks, partitioning depended
#if JVET_M0253_HASH_ME
  if (cuECtx.isHashPerfectMatch && encTestmode.type != ETM_MERGE_SKIP && encTestmode.type != ETM_AFFINE && encTestmode.type != ETM_MERGE_TRIANGLE)
  {
    return false;
  }
#endif

  // if early skip detected, skip all modes checking but the splits
  if( cuECtx.earlySkip && m_pcEncCfg->getUseEarlySkipDetection() && !isModeSplit( encTestmode ) && !( isModeInter( encTestmode ) ) )
  {
    return false;
  }

  const PartSplit implicitSplit = partitioner.getImplicitSplit( cs );
  const bool isBoundary         = implicitSplit != CU_DONT_SPLIT;

  if( isBoundary && encTestmode.type != ETM_SPLIT_QT )
  {
    return getPartSplit( encTestmode ) == implicitSplit;
  }
  else if( isBoundary && encTestmode.type == ETM_SPLIT_QT )
  {
    return partitioner.canSplit( CU_QUAD_SPLIT, cs );
  }

#if REUSE_CU_RESULTS
  if( cuECtx.get<bool>( IS_REUSING_CU ) )
  {
    if( encTestmode.type == ETM_RECO_CACHED )
    {
      return true;
    }

    if( isModeNoSplit( encTestmode ) )
    {
      return false;
    }
  }

#endif
  const Slice&           slice       = *m_slice;
  const SPS&             sps         = *slice.getSPS();
  const uint32_t             numComp     = getNumberValidComponents( slice.getSPS()->getChromaFormatIdc() );
  const uint32_t             width       = partitioner.currArea().lumaSize().width;
  const CodingStructure *bestCS      = cuECtx.bestCS;
  const CodingUnit      *bestCU      = cuECtx.bestCU;
  const EncTestMode      bestMode    = bestCS ? getCSEncMode( *bestCS ) : EncTestMode();

  CodedCUInfo    &relatedCU          = getBlkInfo( partitioner.currArea() );

  if( cuECtx.minDepth > partitioner.currQtDepth && partitioner.canSplit( CU_QUAD_SPLIT, cs ) )
  {
    // enforce QT
    return encTestmode.type == ETM_SPLIT_QT;
  }
  else if( encTestmode.type == ETM_SPLIT_QT && cuECtx.maxDepth <= partitioner.currQtDepth )
  {
    // don't check this QT depth
    return false;
  }

  if( bestCS && bestCS->cus.size() == 1 )
  {
    // update the best non-split cost
    cuECtx.set( BEST_NON_SPLIT_COST, bestCS->cost );
  }

  if( encTestmode.type == ETM_INTRA )
  {
    if( getFastDeltaQp() )
    {
      if( cs.area.lumaSize().width > cs.pcv->fastDeltaQPCuMaxSize )
      {
        return false; // only check necessary 2Nx2N Intra in fast delta-QP mode
      }
    }

    if( m_pcEncCfg->getUseFastLCTU() && partitioner.currArea().lumaSize().area() > 4096 )
    {
      return false;
    }

    if (CS::isDualITree(cs) && (partitioner.currArea().lumaSize().width > 64 || partitioner.currArea().lumaSize().height > 64))
    {
      return false;
    }

#if JVET_M0483_IBC
    if (m_pcEncCfg->getUsePbIntraFast() && (!cs.slice->isIntra() || cs.slice->getSPS()->getIBCFlag()) && !interHadActive(cuECtx) && cuECtx.bestCU && !CU::isIntra(*cuECtx.bestCU))
#else
    if( m_pcEncCfg->getUsePbIntraFast() && !cs.slice->isIntra() && !interHadActive( cuECtx ) && cuECtx.bestCU && CU::isInter( *cuECtx.bestCU ) )
#endif
    {
      return false;
    }

    // INTRA MODES
#if JVET_M0483_IBC
    if (cs.sps->getIBCFlag() && !cuECtx.bestTU)
#else
    if (cs.sps->getSpsNext().getIBCMode() && !cuECtx.bestTU)
#endif
      return true;
    CHECK( !slice.isIntra() && !cuECtx.bestTU, "No possible non-intra encoding for a P- or B-slice found" );

    if( !( slice.isIRAP() || bestMode.type == ETM_INTRA || 
#if JVET_M0483_IBC
      ((!m_pcEncCfg->getDisableIntraPUsInInterSlices()) && (!relatedCU.isInter || !relatedCU.isIBC) && (
#else    
      ( ( !m_pcEncCfg->getDisableIntraPUsInInterSlices() ) && !relatedCU.isInter && (
#endif
                                         ( cuECtx.bestTU->cbf[0] != 0 ) ||
           ( ( numComp > COMPONENT_Cb ) && cuECtx.bestTU->cbf[1] != 0 ) ||
           ( ( numComp > COMPONENT_Cr ) && cuECtx.bestTU->cbf[2] != 0 )  // avoid very complex intra if it is unlikely
         ) ) ) )
    {
      return false;
    }
    if ((m_pcEncCfg->getIBCFastMethod() & IBC_FAST_METHOD_NOINTRA_IBCCBF0)
      && (bestMode.type == ETM_IBC || bestMode.type == ETM_IBC_MERGE)
      && (!cuECtx.bestCU->Y().valid() || cuECtx.bestTU->cbf[0] == 0)
      && (!cuECtx.bestCU->Cb().valid() || cuECtx.bestTU->cbf[1] == 0)
      && (!cuECtx.bestCU->Cr().valid() || cuECtx.bestTU->cbf[2] == 0))
    {
      return false;
    }
    if( lastTestMode().type != ETM_INTRA && cuECtx.bestCS && cuECtx.bestCU && interHadActive( cuECtx ) )
    {
      // Get SATD threshold from best Inter-CU
      if( !cs.slice->isIRAP() && m_pcEncCfg->getUsePbIntraFast() )
      {
        CodingUnit* bestCU = cuECtx.bestCU;
#if JVET_M0483_IBC
        if (bestCU && !CU::isIntra(*bestCU))
#else
        if( bestCU && CU::isInter( *bestCU ) )
#endif
        {
          DistParam distParam;
          const bool useHad = !bestCU->transQuantBypass;
          m_pcRdCost->setDistParam( distParam, cs.getOrgBuf( COMPONENT_Y ), cuECtx.bestCS->getPredBuf( COMPONENT_Y ), cs.sps->getBitDepth( CHANNEL_TYPE_LUMA ), COMPONENT_Y, useHad );
          cuECtx.interHad = distParam.distFunc( distParam );
        }
      }
    }

    return true;
  }
  else if( encTestmode.type == ETM_IPCM )
  {
    if( getFastDeltaQp() )
    {
      const SPS &sps = *cs.sps;
      const uint32_t fastDeltaQPCuMaxPCMSize = Clip3( ( uint32_t ) 1 << sps.getPCMLog2MinSize(), ( uint32_t ) 1 << sps.getPCMLog2MaxSize(), 32u );

      if( cs.area.lumaSize().width > fastDeltaQPCuMaxPCMSize )
      {
        return false;   // only check necessary PCM in fast deltaqp mode
      }
    }

    // PCM MODES
    return sps.getPCMEnabledFlag() && width <= ( 1 << sps.getPCMLog2MaxSize() ) && width >= ( 1 << sps.getPCMLog2MinSize() );
  }
  else if (encTestmode.type == ETM_IBC || encTestmode.type == ETM_IBC_MERGE)
  {
    // IBC MODES
#if JVET_M0483_IBC
    return sps.getIBCFlag() && width <= IBC_MAX_CAND_SIZE && partitioner.currArea().lumaSize().height <= IBC_MAX_CAND_SIZE;
#else
    return sps.getSpsNext().getIBCMode() && width <= IBC_MAX_CAND_SIZE && partitioner.currArea().lumaSize().height <= IBC_MAX_CAND_SIZE;
#endif
  }
  else if( isModeInter( encTestmode ) )
  {
    // INTER MODES (ME + MERGE/SKIP)
    CHECK( slice.isIntra(), "Inter-mode should not be in the I-Slice mode list!" );

    if( getFastDeltaQp() )
    {
      if( encTestmode.type == ETM_MERGE_SKIP )
      {
        return false;
      }
      if( cs.area.lumaSize().width > cs.pcv->fastDeltaQPCuMaxSize )
      {
        return false; // only check necessary 2Nx2N Inter in fast deltaqp mode
      }
    }

    // --- Check if we can quit current mode using SAVE/LOAD coding history

    if( encTestmode.type == ETM_INTER_ME )
    {
      if( encTestmode.opts == ETO_STANDARD )
      {
        // NOTE: ETO_STANDARD is always done when early SKIP mode detection is enabled
        if( !m_pcEncCfg->getUseEarlySkipDetection() )
        {
          if( relatedCU.isSkip || relatedCU.isIntra )
          {
            return false;
          }
        }
      }
      else if ((encTestmode.opts & ETO_IMV) != 0)
      {
        int imvOpt = (encTestmode.opts & ETO_IMV) >> ETO_IMV_SHIFT;

        if (imvOpt == 3 && cuECtx.get<double>(BEST_NO_IMV_COST) * 1.06 < cuECtx.get<double>(BEST_IMV_COST))
        {
#if JVET_M0246_AFFINE_AMVR
          if ( !m_pcEncCfg->getUseAffineAmvr() )
#endif
          return false;
        }
      }
    }

    if ( encTestmode.type == ETM_AFFINE && relatedCU.isIntra )
    {
      return false;
    }
    if( encTestmode.type == ETM_MERGE_TRIANGLE && ( partitioner.currArea().lumaSize().area() < TRIANGLE_MIN_SIZE || relatedCU.isIntra ) )
    { 
      return false;
    }
    return true;
  }
  else if( isModeSplit( encTestmode ) )
  {
    //////////////////////////////////////////////////////////////////////////
    // skip-history rule - don't split further if at least for three past levels
    //                     in the split tree it was found that skip is the best mode
    //////////////////////////////////////////////////////////////////////////
    int skipScore = 0;

#if JVET_M0483_IBC 
    if ((!slice.isIntra() || slice.getSPS()->getIBCFlag()) && cuECtx.get<bool>(IS_BEST_NOSPLIT_SKIP))
#else
    if( !slice.isIntra() && cuECtx.get<bool>( IS_BEST_NOSPLIT_SKIP ) )
#endif
    {
      for( int i = 2; i < m_ComprCUCtxList.size(); i++ )
      {
        if( ( m_ComprCUCtxList.end() - i )->get<bool>( IS_BEST_NOSPLIT_SKIP ) )
        {
          skipScore += 1;
        }
        else
        {
          break;
        }
      }
    }

    const PartSplit split = getPartSplit( encTestmode );
    if( !partitioner.canSplit( split, cs ) || skipScore >= 2 )
    {
      if( split == CU_HORZ_SPLIT ) cuECtx.set( DID_HORZ_SPLIT, false );
      if( split == CU_VERT_SPLIT ) cuECtx.set( DID_VERT_SPLIT, false );
      if( split == CU_QUAD_SPLIT ) cuECtx.set( DID_QUAD_SPLIT, false );

      return false;
    }

    if( m_pcEncCfg->getUseContentBasedFastQtbt() )
    {
      const CompArea& currArea = partitioner.currArea().Y();
      int cuHeight  = currArea.height;
      int cuWidth   = currArea.width;

      const bool condIntraInter = m_pcEncCfg->getIntraPeriod() == 1 ? ( partitioner.currBtDepth == 0 ) : ( cuHeight > 32 && cuWidth > 32 );

      if( cuWidth == cuHeight && condIntraInter && getPartSplit( encTestmode ) != CU_QUAD_SPLIT )
      {
        const CPelBuf bufCurrArea = cs.getOrgBuf( partitioner.currArea().block( COMPONENT_Y ) );

        double horVal = 0;
        double verVal = 0;
        double dupVal = 0;
        double dowVal = 0;

        const double th = m_pcEncCfg->getIntraPeriod() == 1 ? 1.2 : 1.0;

        unsigned j, k;

        for( j = 0; j < cuWidth - 1; j++ )
        {
          for( k = 0; k < cuHeight - 1; k++ )
          {
            horVal += abs( bufCurrArea.at( j + 1, k     ) - bufCurrArea.at( j, k ) );
            verVal += abs( bufCurrArea.at( j    , k + 1 ) - bufCurrArea.at( j, k ) );
            dowVal += abs( bufCurrArea.at( j + 1, k )     - bufCurrArea.at( j, k + 1 ) );
            dupVal += abs( bufCurrArea.at( j + 1, k + 1 ) - bufCurrArea.at( j, k ) );
          }
        }
        if( horVal > th * verVal && sqrt( 2 ) * horVal > th * dowVal && sqrt( 2 ) * horVal > th * dupVal && ( getPartSplit( encTestmode ) == CU_HORZ_SPLIT || getPartSplit( encTestmode ) == CU_TRIH_SPLIT ) )
        {
          return false;
        }
        if( th * dupVal < sqrt( 2 ) * verVal && th * dowVal < sqrt( 2 ) * verVal && th * horVal < verVal && ( getPartSplit( encTestmode ) == CU_VERT_SPLIT || getPartSplit( encTestmode ) == CU_TRIV_SPLIT ) )
        {
          return false;
        }
      }

      if( m_pcEncCfg->getIntraPeriod() == 1 && cuWidth <= 32 && cuHeight <= 32 && bestCS && bestCS->tus.size() == 1 && bestCU && bestCU->depth == partitioner.currDepth && partitioner.currBtDepth > 1 && isLuma( partitioner.chType ) )
      {
        if( !bestCU->rootCbf )
        {
          return false;
        }
      }
    }

    if( bestCU && bestCU->skip && bestCU->mtDepth >= m_skipThreshold && !isModeSplit( cuECtx.lastTestMode ) )
    {
      return false;
    }

    int featureToSet = -1;

    switch( getPartSplit( encTestmode ) )
    {
      case CU_QUAD_SPLIT:
        {
#if ENABLE_SPLIT_PARALLELISM
          if( !cuECtx.isLevelSplitParallel )
#endif
          if( !cuECtx.get<bool>( QT_BEFORE_BT ) && bestCU )
          {
            unsigned maxBTD        = cs.pcv->getMaxBtDepth( slice, partitioner.chType );
            const CodingUnit *cuBR = bestCS->cus.back();
            unsigned height        = partitioner.currArea().lumaSize().height;

#if JVET_M0483_IBC
            if (bestCU && ((bestCU->btDepth == 0 && maxBTD >= ((slice.isIntra() && !slice.getSPS()->getIBCFlag()) ? 3 : 2))
              || (bestCU->btDepth == 1 && cuBR && cuBR->btDepth == 1 && maxBTD >= ((slice.isIntra() && !slice.getSPS()->getIBCFlag()) ? 4 : 3)))
              && (width <= MAX_TU_SIZE_FOR_PROFILE && height <= MAX_TU_SIZE_FOR_PROFILE)
              && cuECtx.get<bool>(DID_HORZ_SPLIT) && cuECtx.get<bool>(DID_VERT_SPLIT))
            {
              return false;
            }
#else
            if( bestCU && ( ( bestCU->btDepth == 0 &&                               maxBTD >= ( slice.isIntra() ? 3 : 2 ) )
                         || ( bestCU->btDepth == 1 && cuBR && cuBR->btDepth == 1 && maxBTD >= ( slice.isIntra() ? 4 : 3 ) ) )
                       && ( width <= MAX_TU_SIZE_FOR_PROFILE && height <= MAX_TU_SIZE_FOR_PROFILE )
                       && cuECtx.get<bool>( DID_HORZ_SPLIT ) && cuECtx.get<bool>( DID_VERT_SPLIT ) )
            {
              return false;
            }
#endif
          }
          if( m_pcEncCfg->getUseEarlyCU() && bestCS->cost != MAX_DOUBLE && bestCU && bestCU->skip )
          {
            return false;
          }
          if( getFastDeltaQp() && width <= slice.getPPS()->pcv->fastDeltaQPCuMaxSize )
          {
            return false;
          }
        }
        break;
      case CU_HORZ_SPLIT:
        featureToSet = DID_HORZ_SPLIT;
        break;
      case CU_VERT_SPLIT:
        featureToSet = DID_VERT_SPLIT;
        break;
      case CU_TRIH_SPLIT:
        if( cuECtx.get<bool>( DID_HORZ_SPLIT ) && bestCU && bestCU->btDepth == partitioner.currBtDepth && !bestCU->rootCbf )
        {
          return false;
        }

        if( !cuECtx.get<bool>( DO_TRIH_SPLIT ) )
        {
          return false;
        }
        break;
      case CU_TRIV_SPLIT:
        if( cuECtx.get<bool>( DID_VERT_SPLIT ) && bestCU && bestCU->btDepth == partitioner.currBtDepth && !bestCU->rootCbf )
        {
          return false;
        }

        if( !cuECtx.get<bool>( DO_TRIV_SPLIT ) )
        {
          return false;
        }
        break;
      default:
        THROW( "Only CU split modes are governed by the EncModeCtrl" );
        return false;
        break;
    }

    switch( split )
    {
      case CU_HORZ_SPLIT:
      case CU_TRIH_SPLIT:
        if( cuECtx.get<bool>( QT_BEFORE_BT ) && cuECtx.get<bool>( DID_QUAD_SPLIT ) )
        {
          if( cuECtx.get<int>( MAX_QT_SUB_DEPTH ) > partitioner.currQtDepth + 1 )
          {
            if( featureToSet >= 0 ) cuECtx.set( featureToSet, false );
            return false;
          }
        }
        break;
      case CU_VERT_SPLIT:
      case CU_TRIV_SPLIT:
        if( cuECtx.get<bool>( QT_BEFORE_BT ) && cuECtx.get<bool>( DID_QUAD_SPLIT ) )
        {
          if( cuECtx.get<int>( MAX_QT_SUB_DEPTH ) > partitioner.currQtDepth + 1 )
          {
            if( featureToSet >= 0 ) cuECtx.set( featureToSet, false );
            return false;
          }
        }
        break;
      default:
        break;
    }

    if( split == CU_QUAD_SPLIT ) cuECtx.set( DID_QUAD_SPLIT, true );
    return true;
  }
  else
  {
    CHECK( encTestmode.type != ETM_POST_DONT_SPLIT, "Unknown mode" );

    if( !bestCS || ( bestCS && isModeSplit( bestMode ) ) )
    {
      return false;
    }
    else
    {
#if REUSE_CU_RESULTS
      setFromCs( *bestCS, partitioner );

#endif
      // assume the non-split modes are done and set the marks for the best found mode
      if( bestCS && bestCU )
      {
        if( CU::isInter( *bestCU ) )
        {
          relatedCU.isInter   = true;
#if HM_CODED_CU_INFO
          relatedCU.isSkip   |= bestCU->skip;
          relatedCU.isMMVDSkip |= bestCU->mmvdSkip;
#else
          relatedCU.isSkip    = bestCU->skip;
#endif
          relatedCU.GBiIdx    = bestCU->GBiIdx;
        }
#if JVET_M0483_IBC
        else if (CU::isIBC(*bestCU))
        {
          relatedCU.isIBC = true;
#if HM_CODED_CU_INFO
          relatedCU.isSkip |= bestCU->skip;
#endif
        }
#endif
        else if( CU::isIntra( *bestCU ) )
        {
          relatedCU.isIntra   = true;
        }
#if ENABLE_SPLIT_PARALLELISM
        touch( partitioner.currArea() );
#endif
        cuECtx.set( IS_BEST_NOSPLIT_SKIP, bestCU->skip );
      }
    }

    return false;
  }
}

bool EncModeCtrlMTnoRQT::useModeResult( const EncTestMode& encTestmode, CodingStructure*& tempCS, Partitioner& partitioner )
{
  xExtractFeatures( encTestmode, *tempCS );

  ComprCUCtx& cuECtx = m_ComprCUCtxList.back();


  if(      encTestmode.type == ETM_SPLIT_BT_H )
  {
    cuECtx.set( BEST_HORZ_SPLIT_COST, tempCS->cost );
  }
  else if( encTestmode.type == ETM_SPLIT_BT_V )
  {
    cuECtx.set( BEST_VERT_SPLIT_COST, tempCS->cost );
  }
  else if( encTestmode.type == ETM_SPLIT_TT_H )
  {
    cuECtx.set( BEST_TRIH_SPLIT_COST, tempCS->cost );
  }
  else if( encTestmode.type == ETM_SPLIT_TT_V )
  {
    cuECtx.set( BEST_TRIV_SPLIT_COST, tempCS->cost );
  }
#if !JVET_M0464_UNI_MTS
  else if( encTestmode.type == ETM_INTRA )
  {
    const CodingUnit cu = *tempCS->getCU( partitioner.chType );

    if( !cu.emtFlag )
    {
      cuECtx.bestEmtSize2Nx2N1stPass = tempCS->cost;
    }
#if JVET_M0102_INTRA_SUBPARTITIONS
    if (!cu.ispMode)
    {
      cuECtx.bestCostEmtFirstPassNoIsp = tempCS->cost;
    }
#endif
  }
#endif

  if( m_pcEncCfg->getIMV4PelFast() && m_pcEncCfg->getIMV() && encTestmode.type == ETM_INTER_ME )
  {
    int imvMode = ( encTestmode.opts & ETO_IMV ) >> ETO_IMV_SHIFT;

    if( imvMode == 1 )
    {
      if( tempCS->cost < cuECtx.get<double>( BEST_IMV_COST ) )
      {
        cuECtx.set( BEST_IMV_COST, tempCS->cost );
      }
    }
    else if( imvMode == 0 )
    {
      if( tempCS->cost < cuECtx.get<double>( BEST_NO_IMV_COST ) )
      {
        cuECtx.set( BEST_NO_IMV_COST, tempCS->cost );
      }
    }
  }

  if( encTestmode.type == ETM_SPLIT_QT )
  {
    int maxQtD = 0;
    for( const auto& cu : tempCS->cus )
    {
      maxQtD = std::max<int>( maxQtD, cu->qtDepth );
    }
    cuECtx.set( MAX_QT_SUB_DEPTH, maxQtD );
  }

  if( ( tempCS->sps->getSpsNext().getMTTMode() & 1 ) == 1 )
  {
    int maxMtD = tempCS->pcv->getMaxBtDepth( *tempCS->slice, partitioner.chType ) + partitioner.currImplicitBtDepth;

    if( encTestmode.type == ETM_SPLIT_BT_H )
    {
      if( tempCS->cus.size() > 2 )
      {
        int h_2   = tempCS->area.blocks[partitioner.chType].height / 2;
        int cu1_h = tempCS->cus.front()->blocks[partitioner.chType].height;
        int cu2_h = tempCS->cus.back() ->blocks[partitioner.chType].height;

        cuECtx.set( DO_TRIH_SPLIT, cu1_h < h_2 || cu2_h < h_2 || partitioner.currMtDepth + 1 == maxMtD );
      }
    }
    else if( encTestmode.type == ETM_SPLIT_BT_V )
    {
      if( tempCS->cus.size() > 2 )
      {
        int w_2   = tempCS->area.blocks[partitioner.chType].width / 2;
        int cu1_w = tempCS->cus.front()->blocks[partitioner.chType].width;
        int cu2_w = tempCS->cus.back() ->blocks[partitioner.chType].width;

        cuECtx.set( DO_TRIV_SPLIT, cu1_w < w_2 || cu2_w < w_2 || partitioner.currMtDepth + 1 == maxMtD );
      }
    }
  }

  // for now just a simple decision based on RD-cost or choose tempCS if bestCS is not yet coded
  if( !cuECtx.bestCS || tempCS->features[ENC_FT_RD_COST] < cuECtx.bestCS->features[ENC_FT_RD_COST] )
  {
    cuECtx.bestCS = tempCS;
    cuECtx.bestCU = tempCS->cus[0];
    cuECtx.bestTU = cuECtx.bestCU->firstTU;

    if( isModeInter( encTestmode ) )
    {
      //Here we take the best cost of both inter modes. We are assuming only the inter modes (and all of them) have come before the intra modes!!!
      cuECtx.bestInterCost = cuECtx.bestCS->cost;
    }

    return true;
  }