/src/vvdec/source/Lib/CommonLib/Slice.cpp

Source
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/** \file     Slice.cpp
    \brief    slice header and SPS class
*/

#include "CommonDef.h"
#include "Unit.h"
#include "Slice.h"
#include "Picture.h"
#include "dtrace_next.h"

#include "UnitTools.h"
#include "vvdec/sei.h"

namespace vvdec
{

void VPS::deriveOutputLayerSets()
{
  if( m_uiMaxLayers == 1 )
  {
    m_totalNumOLSs = 1;
  }
  else if( m_vpsEachLayerIsAnOlsFlag || m_vpsOlsModeIdc < 2 )
  {
    m_totalNumOLSs = m_uiMaxLayers;
  }
  else if( m_vpsOlsModeIdc == 2 )
  {
    m_totalNumOLSs = m_vpsNumOutputLayerSets;
  }

  m_olsDpbParamsIdx.resize( m_totalNumOLSs );
  m_olsDpbPicSize.resize( m_totalNumOLSs, Size(0, 0) );
  m_numOutputLayersInOls.resize( m_totalNumOLSs );
  m_numLayersInOls.resize( m_totalNumOLSs );
  m_outputLayerIdInOls.resize( m_totalNumOLSs, std::vector<int>( m_uiMaxLayers, NOT_VALID ) );
  m_layerIdInOls.resize( m_totalNumOLSs, std::vector<int>( m_uiMaxLayers, NOT_VALID ) );

  std::vector<int> numRefLayers( m_uiMaxLayers );
  std::vector<std::vector<int>> outputLayerIdx( m_totalNumOLSs, std::vector<int>( m_uiMaxLayers, NOT_VALID ) );
  std::vector<std::vector<int>> layerIncludedInOlsFlag( m_totalNumOLSs, std::vector<int>( m_uiMaxLayers, 0 ) );
  std::vector<std::vector<int>> dependencyFlag( m_uiMaxLayers, std::vector<int>( m_uiMaxLayers, NOT_VALID ) );
  std::vector<std::vector<int>> refLayerIdx( m_uiMaxLayers, std::vector<int>( m_uiMaxLayers, NOT_VALID ) );
  std::vector<int> layerUsedAsRefLayerFlag( m_uiMaxLayers, 0 );
  std::vector<int> layerUsedAsOutputLayerFlag( m_uiMaxLayers, NOT_VALID );
  for( int i = 0; i < m_uiMaxLayers; i++ )
  {
    int r = 0;

    for( int j = 0; j < m_uiMaxLayers; j++ )
    {
      dependencyFlag[i][j] = m_vpsDirectRefLayerFlag[i][j];

      for( int k = 0; k < i; k++ )
      {
        if( m_vpsDirectRefLayerFlag[i][k] && dependencyFlag[k][j] )
        {
          dependencyFlag[i][j] = 1;
        }
      }
      if (m_vpsDirectRefLayerFlag[i][j])
      {
        layerUsedAsRefLayerFlag[j] = 1;
      }
      if( dependencyFlag[i][j] )
      {
        refLayerIdx[i][r++] = j;
      }
    }

    numRefLayers[i] = r;
  }

  m_numOutputLayersInOls[0] = 1;
  m_outputLayerIdInOls[0][0] = m_vpsLayerId[0];
  layerUsedAsOutputLayerFlag[0] = 1;
  for (int i = 1; i < m_uiMaxLayers; i++)
  {
    if (m_vpsEachLayerIsAnOlsFlag || m_vpsOlsModeIdc < 2)
    {
      layerUsedAsOutputLayerFlag[i] = 1;
    }
    else
    {
      layerUsedAsOutputLayerFlag[i] = 0;
    }
  }
  for( int i = 1; i < m_totalNumOLSs; i++ )
  {
    if( m_vpsEachLayerIsAnOlsFlag || m_vpsOlsModeIdc == 0 )
    {
      m_numOutputLayersInOls[i] = 1;
      m_outputLayerIdInOls[i][0] = m_vpsLayerId[i];
    }
    else if( m_vpsOlsModeIdc == 1 )
    {
      m_numOutputLayersInOls[i] = i + 1;

      for( int j = 0; j < m_numOutputLayersInOls[i]; j++ )
      {
        m_outputLayerIdInOls[i][j] = m_vpsLayerId[j];
      }
    }
    else if( m_vpsOlsModeIdc == 2 )
    {
      int j = 0;
      for( int k = 0; k < m_uiMaxLayers; k++ )
      {
        if( m_vpsOlsOutputLayerFlag[i][k] )
        {
          layerIncludedInOlsFlag[i][k] = 1;
          layerUsedAsOutputLayerFlag[k] = 1;
          outputLayerIdx[i][j] = k;
          m_outputLayerIdInOls[i][j++] = m_vpsLayerId[k];
        }
      }
      m_numOutputLayersInOls[i] = j;

      for( j = 0; j < m_numOutputLayersInOls[i]; j++ )
      {
        int idx = outputLayerIdx[i][j];
        for( int k = 0; k < numRefLayers[idx]; k++ )
        {
          layerIncludedInOlsFlag[i][refLayerIdx[idx][k]] = 1;
        }
      }
    }
  }
  for (int i = 0; i < m_uiMaxLayers; i++)
  {
    CHECK(layerUsedAsRefLayerFlag[i] == 0 && layerUsedAsOutputLayerFlag[i] == 0, "There shall be no layer that is neither an output layer nor a direct reference layer");
  }

  m_numLayersInOls[0]   = 1;
  m_layerIdInOls[0][0]  = m_vpsLayerId[0];
  m_numMultiLayeredOlss = 0;

  for( int i = 1; i < m_totalNumOLSs; i++ )
  {
    if( m_vpsEachLayerIsAnOlsFlag )
    {
      m_numLayersInOls[i] = 1;
      m_layerIdInOls[i][0] = m_vpsLayerId[i];
    }
    else if( m_vpsOlsModeIdc == 0 || m_vpsOlsModeIdc == 1 )
    {
      m_numLayersInOls[i] = i + 1;
      for( int j = 0; j < m_numLayersInOls[i]; j++ )
      {
        m_layerIdInOls[i][j] = m_vpsLayerId[j];
      }
    }
    else if( m_vpsOlsModeIdc == 2 )
    {
      int j = 0;
      for( int k = 0; k < m_uiMaxLayers; k++ )
      {
        if( layerIncludedInOlsFlag[i][k] )
        {
          m_layerIdInOls[i][j++] = m_vpsLayerId[k];
        }
      }

      m_numLayersInOls[i] = j;
    }
    if( m_numLayersInOls[i] > 1 )
    {
      m_multiLayerOlsIdx[i] = m_numMultiLayeredOlss;
      m_numMultiLayeredOlss++;
    }
  }
  m_multiLayerOlsIdxToOlsIdx.resize(m_numMultiLayeredOlss);

  for (int i=0, j=0; i<m_totalNumOLSs; i++)
  {
    if (m_numLayersInOls[i] > 1)
    {
      m_multiLayerOlsIdxToOlsIdx[j] = i;
    }
  }
}

void VPS::checkVPS()
{
  for (int multiLayerOlsIdx=0; multiLayerOlsIdx < m_numMultiLayeredOlss; multiLayerOlsIdx++)
  {
    const int olsIdx = m_multiLayerOlsIdxToOlsIdx[multiLayerOlsIdx];
    const int olsHrdIdx = getOlsHrdIdx(multiLayerOlsIdx);
    const int olsPtlIdx = getOlsPtlIdx(olsIdx);
    CHECK( getHrdMaxTid(olsHrdIdx) < getPtlMaxTemporalId(olsPtlIdx),
           "The value of vps_hrd_max_tid[vps_ols_timing_hrd_idx[m]] shall be greater than or equal to "
           "vps_ptl_max_tid[ vps_ols_ptl_idx[n]] for each m-th multi-layer OLS for m from 0 to "
           "NumMultiLayerOlss - 1, inclusive, and n being the OLS index of the m-th multi-layer OLS among all OLSs." );
    const int olsDpbParamsIdx = getOlsDpbParamsIdx(multiLayerOlsIdx);
    CHECK( m_dpbMaxTemporalId[olsDpbParamsIdx] < getPtlMaxTemporalId(olsPtlIdx),
           "The value of vps_dpb_max_tid[vps_ols_dpb_params_idx[m]] shall be greater than or equal to "
           "vps_ptl_max_tid[ vps_ols_ptl_idx[n]] for each m-th multi-layer OLS for m from 0 to "
           "NumMultiLayerOlss - 1, inclusive, and n being the OLS index of the m-th multi-layer OLS among all OLSs." );
  }
}

void VPS::deriveTargetOutputLayerSet( int targetOlsIdx )
{
  m_iTargetLayer = targetOlsIdx < 0 ? m_uiMaxLayers - 1 : targetOlsIdx;
  m_targetOutputLayerIdSet.clear();
  m_targetLayerIdSet.clear();

  for( int i = 0; i < m_numOutputLayersInOls[m_iTargetLayer]; i++ )
  {
    m_targetOutputLayerIdSet.push_back( m_outputLayerIdInOls[m_iTargetLayer][i] );
  }

  for( int i = 0; i < m_numLayersInOls[m_iTargetLayer]; i++ )
  {
    m_targetLayerIdSet.push_back( m_layerIdInOls[m_iTargetLayer][i] );
  }
}

Slice::Slice()
{
  for( uint32_t i = 0; i < NUM_REF_PIC_LIST_01; i++ )
  {
    for(int iNumCount = 0; iNumCount < MAX_NUM_REF; iNumCount++)
    {
      m_apcRefPicList [i][iNumCount] = nullptr;
      m_aiRefPOCList  [i][iNumCount] = 0;
    }

    m_apcRefPicList[i][MAX_NUM_REF] = nullptr;
    m_aiRefPOCList [i][MAX_NUM_REF] = 0;
  }

  resetWpScaling();
  initWpAcDcParam();

  memset( m_alfApss, 0, sizeof( m_alfApss ) );
}


void Slice::initSlice()
{
  for(uint32_t i=0; i<NUM_REF_PIC_LIST_01; i++)
  {
    m_aiNumRefIdx[i]      = 0;
  }
  m_colFromL0Flag = true;
  m_colRefIdx = 0;

  m_bCheckLDC = false;

  m_biDirPred = false;
  m_symRefIdx[0] = -1;
  m_symRefIdx[1] = -1;

  for (uint32_t component = 0; component < MAX_NUM_COMPONENT; component++)
  {
    m_iSliceChromaQpDelta[component] = 0;
  }
  m_iSliceChromaQpDelta[JOINT_CbCr] = 0;


  m_substreamSizes.clear();
  m_cabacInitFlag        = false;
  resetAlfEnabledFlag();
  resetCcAlfEnabledFlags();
  m_sliceMap.resetSliceMap();
}

void Slice::inheritFromPicHeader( const PicHeader* picHeader, const PPS* pps, const SPS* sps )
{
  if( pps->getRplInfoInPhFlag() )
  {
    for( auto l: { REF_PIC_LIST_0, REF_PIC_LIST_1 } )
    {
#if 0
      // this is how it's implemented in VTM, but overridden later in parseSliceHeader()
      const int rplIdx = picHeader->getRPLIdx( l );
      m_RPLIdx[l]      = rplIdx;
      m_RPL[l]         = rplIdx == -1 ? *picHeader->getRPL( l ) : sps->getRPLList( l )[m_RPLIdx[l]];
#else
      // this is how it's overridden later
      setRPLIdx( l, picHeader->getRPLIdx( l ) );
      setRPL( l, *picHeader->getRPL( l ) );
#endif
    }
  }
  setColFromL0Flag( isInterB() ? picHeader->getPicColFromL0Flag() : true );
  setColRefIdx( pps->getRplInfoInPhFlag() ? picHeader->getColRefIdx() : 0 );

  if( pps->getQpDeltaInfoInPhFlag() )
  {
    setSliceQp( 26 + pps->getPicInitQPMinus26() + picHeader->getQpDelta() );
  }

  setDeblockingFilterDisable( picHeader->getDeblockingFilterDisable() );
  setDeblockingFilterBetaOffsetDiv2( picHeader->getDeblockingFilterBetaOffsetDiv2() );
  setDeblockingFilterTcOffsetDiv2  ( picHeader->getDeblockingFilterTcOffsetDiv2()   );
  if( pps->getPPSChromaToolFlag() )
  {
    setDeblockingFilterCbBetaOffsetDiv2( picHeader->getDeblockingFilterCbBetaOffsetDiv2() );
    setDeblockingFilterCbTcOffsetDiv2  ( picHeader->getDeblockingFilterCbTcOffsetDiv2()   );
    setDeblockingFilterCrBetaOffsetDiv2( picHeader->getDeblockingFilterCrBetaOffsetDiv2() );
    setDeblockingFilterCrTcOffsetDiv2  ( picHeader->getDeblockingFilterCrTcOffsetDiv2()   );
  }
  else
  {
    setDeblockingFilterCbBetaOffsetDiv2( getDeblockingFilterBetaOffsetDiv2() );
    setDeblockingFilterCbTcOffsetDiv2  ( getDeblockingFilterTcOffsetDiv2()   );
    setDeblockingFilterCrBetaOffsetDiv2( getDeblockingFilterBetaOffsetDiv2() );
    setDeblockingFilterCrTcOffsetDiv2  ( getDeblockingFilterTcOffsetDiv2()   );
  }

  setSaoEnabledFlag( CHANNEL_TYPE_LUMA,   picHeader->getSaoEnabledFlag( CHANNEL_TYPE_LUMA ) );
  setSaoEnabledFlag( CHANNEL_TYPE_CHROMA, picHeader->getSaoEnabledFlag( CHANNEL_TYPE_CHROMA ) );

  setAlfEnabledFlag( COMPONENT_Y,  picHeader->getAlfEnabledFlag( COMPONENT_Y ) );
  setAlfEnabledFlag( COMPONENT_Cb, picHeader->getAlfEnabledFlag( COMPONENT_Cb ) );
  setAlfEnabledFlag( COMPONENT_Cr, picHeader->getAlfEnabledFlag( COMPONENT_Cr ) );

  setNumAlfAps( picHeader->getNumAlfAps() );
  setAlfApsIdsLuma( picHeader->getAlfAPSIds() );
  setAlfApsIdChroma( picHeader->getAlfApsIdChroma() );
  setCcAlfCbEnabledFlag( picHeader->getCcAlfEnabledFlag( COMPONENT_Cb ) );
  setCcAlfCrEnabledFlag( picHeader->getCcAlfEnabledFlag( COMPONENT_Cr ) );
  setCcAlfCbApsId( picHeader->getCcAlfCbApsId() );
  setCcAlfCrApsId( picHeader->getCcAlfCrApsId() );

  setLmcsEnabledFlag        ( getPictureHeaderInSliceHeader() ? picHeader->getLmcsEnabledFlag()                : false );
  setExplicitScalingListUsed( getPictureHeaderInSliceHeader() ? picHeader->getExplicitScalingListEnabledFlag() : false );
}

void  Slice::setNumEntryPoints( const SPS *sps, const PPS *pps )
{
  m_numEntryPoints = 0;

  if( !sps->getEntryPointsPresentFlag() )
  {
    return;
  }

  uint32_t prevCtuX = m_sliceMap.getCtuAddrInSlice( 0 ) % pps->getPicWidthInCtu();
  uint32_t prevCtuY = m_sliceMap.getCtuAddrInSlice( 0 ) / pps->getPicWidthInCtu();
  // count the number of CTUs that align with either the start of a tile, or with an entropy coding sync point
  // ignore the first CTU since it doesn't count as an entry point
  for( uint32_t i = 1; i < m_sliceMap.getNumCtuInSlice(); i++ )
  {
    const uint32_t ctuAddr = m_sliceMap.getCtuAddrInSlice( i );
    const uint32_t ctuX    = ctuAddr % pps->getPicWidthInCtu();
    const uint32_t ctuY    = ctuAddr / pps->getPicWidthInCtu();

    if( pps->ctuToTileRowBd( ctuY ) != pps->ctuToTileRowBd( prevCtuY )
        || pps->ctuToTileColBd( ctuX ) != pps->ctuToTileColBd( prevCtuX )
        || ( ctuY != prevCtuY && sps->getEntropyCodingSyncEnabledFlag() ) )
    {
      m_numEntryPoints++;
    }

    prevCtuX = ctuX;
    prevCtuY = ctuY;
  }
}

void Slice::setDefaultClpRng( const SPS& sps )
{
  m_clpRngs.bd = sps.getBitDepth();
}


bool Slice::getRapPicFlag() const
{
  return getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA;
}

Picture* Slice::xGetRefPic( const PicList& rcListPic, int poc, const int layerId )
{
  // return a nullptr, if picture is not found
  for( auto& pcPic: rcListPic )
  {
    if( pcPic && pcPic->getPOC() == poc && pcPic->dpbReferenceMark && pcPic->layerId == layerId )
    {
      pcPic->stillReferenced = true;
      return pcPic;
    }
  }

  return nullptr;
}

Picture* Slice::xGetLongTermRefPic( const PicList& rcListPic, int poc, bool pocHasMsb, const int layerId, bool getCandidate )
{
  for( auto& pcPic: rcListPic )
  {
    if( pcPic && pcPic->getPOC() != this->getPOC() && pcPic->dpbReferenceMark && pcPic->layerId == layerId )
    {
      if( isLTPocEqual( poc, pcPic->getPOC(), getSPS()->getBitsForPOC(), pocHasMsb ) )
      {
        if( getCandidate || pcPic->dpbReferenceMark == Picture::LongTerm )
        {
          pcPic->stillReferenced = true;
          return pcPic;
        }

        return nullptr;
      }
    }
  }

  return nullptr;
}

void Slice::constructRefPicLists( const PicList& rcPicList )
{
  ::memset(m_bIsUsedAsLongTerm, 0, sizeof(m_bIsUsedAsLongTerm));
  if (m_eSliceType == I_SLICE)
  {
    ::memset(m_apcRefPicList, 0, sizeof(m_apcRefPicList));
    ::memset(m_aiRefPOCList, 0, sizeof(m_aiRefPOCList));
    ::memset(m_aiNumRefIdx, 0, sizeof(m_aiNumRefIdx));
    return;
  }

  constructSingleRefPicList( rcPicList, REF_PIC_LIST_0 );
  constructSingleRefPicList( rcPicList, REF_PIC_LIST_1 );
}

void Slice::constructSingleRefPicList( const PicList& rcPicList, RefPicList listId )
{
  ReferencePictureList& rRPL = m_RPL[listId];

  uint32_t numOfActiveRef = getNumRefIdx( listId );
  CHECK( rRPL.getNumRefEntries() < numOfActiveRef,
         "For each i equal to 0 or 1, num_ref_entries[ i ][ RplsIdx[ i ] ] shall not be less than NumRefIdxActive[ i ]." );
  for( int ii = 0; ii < rRPL.getNumRefEntries(); ii++ )
  {
    Picture* pcRefPic = nullptr;
    int      refPOC   = 0;

    if( !rRPL.isRefPicLongterm( ii ) )
    {
      refPOC   = getPOC() + rRPL.getRefPicIdentifier( ii );
      pcRefPic = xGetRefPic( rcPicList, refPOC, m_pcPic->layerId );
      CHECK( !pcRefPic, "Picture pointer missing from ref pic list" );

      pcRefPic->dpbReferenceMark = Picture::ShortTerm;
    }
    else
    {
      refPOC   = rRPL.calcLTRefPOC( getPOC(), getSPS()->getBitsForPOC(), ii );
      pcRefPic = xGetLongTermRefPic( rcPicList, refPOC, rRPL.getDeltaPocMSBPresentFlag( ii ), m_pcPic->layerId, true );
      CHECK( !pcRefPic, "Picture pointer missing from ref pic list" );
      if( !rRPL.getDeltaPocMSBPresentFlag( ii ) )
        refPOC = pcRefPic->getPOC();

      CHECK( getPOC() - refPOC >= ( 1 << 24 ),
             "There shall be no LTRP entry in RefPicList[ 0 ] or RefPicList[ 1 ] for which the difference between the PicOrderCntVal of the"
             " current picture and the PicOrderCntVal of the picture referred to by the entry is greater than or equal to 2^24." );

      pcRefPic->dpbReferenceMark = Picture::LongTerm;
    }

    CHECK( pcRefPic->getPOC() != refPOC, "reference picture as wrong POC" );
    CHECK_FATAL(pcRefPic->chromaFormat != getPic()->chromaFormat,"reference picture has wrong chroma format");

    if( ii < numOfActiveRef )
    {
      m_apcRefPicList    [listId][ii] = pcRefPic;
      m_aiRefPOCList     [listId][ii] = refPOC;
      m_bIsUsedAsLongTerm[listId][ii] = pcRefPic->dpbReferenceMark == Picture::LongTerm;

      CHECK( !m_apcRefPicList[listId][ii] || m_apcRefPicList[listId][ii]->getTLayer() > getTLayer(),
             "The picture referred to by each active entry in RefPicList[ 0 ] or RefPicList[ 1 ] shall be present in the DPB and shall"
             " have TemporalId less than or equal to that of the current picture." );
      CHECK( !m_pcPic, "m_pcPic not set yet" );
      CHECK( m_apcRefPicList[listId][ii] == m_pcPic || m_apcRefPicList[listId][ii]->cs->picHeader->getNonReferencePictureFlag(),
             "The picture referred to by each entry in RefPicList[ 0 ] or RefPicList[ 1 ] shall not be the current picture"
             " and shall have ph_non_ref_pic_flag equal to 0." );
      CHECK( getNalUnitType() == NAL_UNIT_CODED_SLICE_STSA && m_apcRefPicList[listId][ii]->getTLayer() == getTLayer(),
             "When the current slice has nal_unit_type equal to STSA_NUT, there shall be no active entry in RefPicList[ 0 ] or RefPicList[ 1 ]"
             " that has TemporalId equal to that of the current picture and nuh_layer_id equal to that of the current picture." );

      for( int j = 0; j < ii; ++j )
      {
        CHECK( m_apcRefPicList[listId][j] == m_apcRefPicList[listId][ii] && m_bIsUsedAsLongTerm[listId][j] != m_bIsUsedAsLongTerm[listId][ii],
               "An STRP entry in RefPicList[ 0 ] or RefPicList[ 1 ] of a slice of a picture and an LTRP entry in RefPicList[ 0 ] or RefPicList[ 1 ]"
               " of the same slice or a different slice of the same picture shall not refer to the same picture." )
      }
    }
  }
}

void Slice::checkColRefIdx(uint32_t curSliceSegmentIdx, const Picture* pic)
{
  int i;
  Slice* curSlice = pic->slices[curSliceSegmentIdx];
  int currColRefPOC =  curSlice->getRefPOC( RefPicList(1 - curSlice->getColFromL0Flag()), curSlice->getColRefIdx());

  for(i=curSliceSegmentIdx-1; i>=0; i--)
  {
    const Slice* preSlice = pic->slices[i];
    if(preSlice->getSliceType() != I_SLICE)
    {
      const int preColRefPOC  = preSlice->getRefPOC( RefPicList(1 - preSlice->getColFromL0Flag()), preSlice->getColRefIdx());
      if(currColRefPOC != preColRefPOC)
      {
        THROW_RECOVERABLE( "Collocated_ref_idx shall always be the same for all slices of a coded picture!" );
      }
      else
      {
        break;
      }
    }
  }
}

void Slice::checkCRA( int& pocCRA, NalUnitType& associatedIRAPType, const PicList& rcListPic )
{
  if( pocCRA < MAX_UINT && getPOC() > pocCRA )
  {
    for( int l = 0; l < NUM_REF_PIC_LIST_01; ++l )
    {
      const uint32_t numRefPic = m_RPL[l].getNumberOfShorttermPictures() + m_RPL[l].getNumberOfLongtermPictures();
      for( int i = 0; i < numRefPic; i++ )
      {
        if( !m_RPL[l].isRefPicLongterm( i ) )
        {
          CHECK( getPOC() + m_RPL[l].getRefPicIdentifier( i ) < pocCRA, "Invalid state" );
        }
        else
        {
          CHECK( xGetLongTermRefPic( rcListPic, m_RPL[l].getRefPicIdentifier( i ), m_RPL[l].getDeltaPocMSBPresentFlag( i ), m_pcPic->layerId )->getPOC() < pocCRA, "Invalid state" );
        }
      }
    }
  }
  if (getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL || getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP) // IDR picture found
  {
    pocCRA = getPOC();
    associatedIRAPType = getNalUnitType();
  }
  else if (getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA) // CRA picture found
  {
    pocCRA = getPOC();
    associatedIRAPType = getNalUnitType();
  }
}

void Slice::checkSTSA( const PicList& rcListPic )
{
  int ii;
  Picture* pcRefPic = NULL;
  int numOfActiveRef = getNumRefIdx(REF_PIC_LIST_0);

  for (ii = 0; ii < numOfActiveRef; ii++)
  {
    pcRefPic = m_apcRefPicList[REF_PIC_LIST_0][ii];

    if( m_eNalUnitType == NAL_UNIT_CODED_SLICE_STSA && pcRefPic->layerId == m_pcPic->layerId )
    {
      CHECK( pcRefPic->tempLayer == m_uiTLayer, "When the current picture is an STSA picture and nuh_layer_id equal to that of the current picture, there shall be no active entry in the RPL that has TemporalId equal to that of the current picture" );
    }
    
    // Checking this: "When the current picture is a picture that follows, in decoding order, an STSA picture that has TemporalId equal to that of the current picture, there shall be no
    // picture that has TemporalId equal to that of the current picture included as an active entry in RefPicList[ 0 ] or RefPicList[ 1 ] that precedes the STSA picture in decoding order."
    CHECK(pcRefPic->subLayerNonReferencePictureDueToSTSA, "The RPL of the current picture contains a picture that is not allowed in this temporal layer due to an earlier STSA picture");
  }

  numOfActiveRef = getNumRefIdx(REF_PIC_LIST_1);
  for (ii = 0; ii < numOfActiveRef; ii++)
  {
    pcRefPic = m_apcRefPicList[REF_PIC_LIST_1][ii];

    if( m_eNalUnitType == NAL_UNIT_CODED_SLICE_STSA && pcRefPic->layerId == m_pcPic->layerId )
    {
      CHECK( pcRefPic->tempLayer == m_uiTLayer, "When the current picture is an STSA picture and nuh_layer_id equal to that of the current picture, there shall be no active entry in the RPL that has TemporalId equal to that of the current picture" );
    }
    
    // Checking this: "When the current picture is a picture that follows, in decoding order, an STSA picture that has TemporalId equal to that of the current picture, there shall be no
    // picture that has TemporalId equal to that of the current picture included as an active entry in RefPicList[ 0 ] or RefPicList[ 1 ] that precedes the STSA picture in decoding order."
    CHECK(pcRefPic->subLayerNonReferencePictureDueToSTSA, "The active RPL part of the current picture contains a picture that is not allowed in this temporal layer due to an earlier STSA picture");
  }

  // If the current picture is an STSA picture, make all reference pictures in the DPB with temporal
  // id equal to the temproal id of the current picture sub-layer non-reference pictures. The flag
  // subLayerNonReferencePictureDueToSTSA equal to true means that the picture may not be used for
  // reference by a picture that follows the current STSA picture in decoding order
  if (getNalUnitType() == NAL_UNIT_CODED_SLICE_STSA)
  {
    for( auto & pcPic: rcListPic )
    {
      if( !pcPic->dpbReferenceMark || pcPic->getPOC() == m_iPOC )
      {
        continue;
      }

      if( pcPic->tempLayer == m_uiTLayer )
      {
        pcPic->subLayerNonReferencePictureDueToSTSA = true;
      }
    }
  }
}

void Slice::checkRPL(const ReferencePictureList* pRPL0, const ReferencePictureList* pRPL1, const int associatedIRAPDecodingOrderNumber, const PicList& rcListPic)
{
  Picture* pcRefPic;
  int refPicPOC;
  int refPicDecodingOrderNumber;

  int irapPOC = getAssociatedIRAPPOC();
  
  const int                   numEntries[]       = { pRPL0->getNumberOfShorttermPictures() + pRPL0->getNumberOfLongtermPictures() + pRPL0->getNumberOfInterLayerPictures(),
                                                     pRPL1->getNumberOfShorttermPictures() + pRPL1->getNumberOfLongtermPictures() + pRPL1->getNumberOfInterLayerPictures() };
  const int numActiveEntries[] = { getNumRefIdx( REF_PIC_LIST_0 ), getNumRefIdx( REF_PIC_LIST_1 ) };
  const ReferencePictureList* rpl[] = { pRPL0, pRPL1 };
  const bool fieldSeqFlag = getSPS()->getFieldSeqFlag();
  const int layerIdx = m_pcPic->cs->vps == nullptr ? 0 : m_pcPic->cs->vps->getGeneralLayerIdx( m_pcPic->layerId );

  for( int refPicList = 0; refPicList < 2; refPicList++ )
  {
    for( int i = 0; i < numEntries[refPicList]; i++ )
    {
      if( rpl[refPicList]->isInterLayerRefPic( i ) )
      {
        int refLayerId = m_pcPic->cs->vps->getLayerId( m_pcPic->cs->vps->getDirectRefLayerIdx( layerIdx, rpl[refPicList]->getInterLayerRefPicIdx( i ) ) );
        pcRefPic = xGetRefPic( rcListPic, getPOC(), refLayerId );
        refPicPOC = pcRefPic->getPOC();
      }
      else if( !rpl[refPicList]->isRefPicLongterm( i ) )
      {
        refPicPOC = getPOC() + rpl[refPicList]->getRefPicIdentifier(i);
        pcRefPic = xGetRefPic( rcListPic, refPicPOC, m_pcPic->layerId );
      }
      else
      {
        int ltrpPoc = rpl[refPicList]->calcLTRefPOC( getPOC(), getSPS()->getBitsForPOC(), i );

        pcRefPic = xGetLongTermRefPic( rcListPic, ltrpPoc, rpl[refPicList]->getDeltaPocMSBPresentFlag( i ), m_pcPic->layerId );
        refPicPOC = pcRefPic->getPOC();
      }
      if( !pcRefPic )
      {
        // can't check decoding order for unavailable reference pictures
        continue;
      }
      refPicDecodingOrderNumber = pcRefPic->getDecodingOrderNumber();

      if( m_eNalUnitType == NAL_UNIT_CODED_SLICE_CRA || m_eNalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL || m_eNalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP )
      {
        CHECK( refPicPOC < irapPOC || refPicDecodingOrderNumber < associatedIRAPDecodingOrderNumber, "When the current picture, with nuh_layer_id equal to a particular value layerId, "
          "is an IRAP picture, there shall be no picture referred to by an entry in RefPicList[ 0 ] that precedes, in output order or decoding order, any preceding IRAP picture "
          "with nuh_layer_id equal to layerId in decoding order (when present)." );
      }

      if( irapPOC < getPOC() && !fieldSeqFlag )
      {
        CHECK( refPicPOC < irapPOC || refPicDecodingOrderNumber < associatedIRAPDecodingOrderNumber, "When the current picture follows an IRAP picture having the same value "
          "of nuh_layer_id and the leading pictures, if any, associated with that IRAP picture, in both decoding order and output order, there shall be no picture referred "
          "to by an entry in RefPicList[ 0 ] or RefPicList[ 1 ] that precedes that IRAP picture in output order or decoding order." );
      }

      // Generated reference picture does not have picture header
      const bool nonReferencePictureFlag = pcRefPic->slices[0]->getPicHeader() ? pcRefPic->slices[0]->getPicHeader()->getNonReferencePictureFlag()
                                                                               : pcRefPic->nonReferencePictureFlag;
      CHECK( pcRefPic == m_pcPic || nonReferencePictureFlag, "The picture referred to by each entry in RefPicList[ 0 ] or RefPicList[ 1 ] shall not be the current picture and shall have ph_non_ref_pic_flag equal to 0" );

      if( i < numActiveEntries[refPicList] )
      {
        if( irapPOC < getPOC() )
        {
          CHECK( refPicPOC < irapPOC || refPicDecodingOrderNumber < associatedIRAPDecodingOrderNumber, "When the current picture follows an IRAP picture having the same value "
            "of nuh_layer_id in both decoding order and output order, there shall be no picture referred to by an active entry in RefPicList[ 0 ] or RefPicList[ 1 ] that "
            "precedes that IRAP picture in output order or decoding order." );
        }

        // Checking this: "When the current picture is a RADL picture, there shall be no active entry in RefPicList[ 0 ] or
        // RefPicList[ 1 ] that is any of the following: A picture that precedes the associated IRAP picture in decoding order"
        if( m_eNalUnitType == NAL_UNIT_CODED_SLICE_RADL )
        {
          CHECK( refPicDecodingOrderNumber < associatedIRAPDecodingOrderNumber, "RADL picture detected that violate the rule that no active entry in RefPicList[] shall precede the associated IRAP picture in decoding order" );
        }

        CHECK( pcRefPic->tempLayer > m_pcPic->tempLayer, "The picture referred to by each active entry in RefPicList[ 0 ] or RefPicList[ 1 ] shall be present in the DPB and shall have TemporalId less than or equal to that of the current picture." );
      }
    }
  }
}

void Slice::copySliceInfo( Slice* pSrc, bool cpyAlmostAll )
{
  CHECK_FATAL( !pSrc, "Source is NULL" );

  m_iPOC         = pSrc->m_iPOC;
  m_eNalUnitType = pSrc->m_eNalUnitType;
  m_eSliceType   = pSrc->m_eSliceType;
  m_uiTLayer     = pSrc->m_uiTLayer;

  m_clpRngs      = pSrc->m_clpRngs;
  m_iSliceQp     = pSrc->m_iSliceQp;

  m_bCheckLDC    = pSrc->m_bCheckLDC;
  m_iLastIDR     = pSrc->m_iLastIDR;

  m_pcPicHeader  = pSrc->m_pcPicHeader;
  if( cpyAlmostAll )
  {
    m_pcPic      = pSrc->m_pcPic;
  }

  // TODO: check remaining fields if it really makes sense to copy (GH)

  m_sliceMap     = pSrc->m_sliceMap;

  m_biDirPred    = pSrc->m_biDirPred;
  m_symRefIdx[0] = pSrc->m_symRefIdx[0];
  m_symRefIdx[1] = pSrc->m_symRefIdx[1];

  memcpy( m_apcRefPicList,     pSrc->m_apcRefPicList,     sizeof( m_apcRefPicList ) );
  memcpy( m_aiRefPOCList,      pSrc->m_aiRefPOCList,      sizeof( m_aiRefPOCList ) );
  memcpy( m_bIsUsedAsLongTerm, pSrc->m_bIsUsedAsLongTerm, sizeof( m_bIsUsedAsLongTerm ) );
  if( cpyAlmostAll )
  {
    memcpy( m_RPL,             pSrc->m_RPL,               sizeof( m_RPL ) );
  }
  memcpy( m_weightPredTable,   pSrc->m_weightPredTable,   sizeof( m_weightPredTable ) );
}

void Slice::checkLeadingPictureRestrictions( const PicList & rcListPic ) const
{
  int nalUnitType = this->getNalUnitType();

  // When a picture is a leading picture, it shall be a RADL or RASL picture.
  if(this->getAssociatedIRAPPOC() > this->getPOC())
  {
    // Do not check IRAP pictures since they may get a POC lower than their associated IRAP
    if (nalUnitType < NAL_UNIT_CODED_SLICE_IDR_W_RADL ||
        nalUnitType > NAL_UNIT_CODED_SLICE_CRA)
    {
      CHECK(nalUnitType != NAL_UNIT_CODED_SLICE_RASL &&
            nalUnitType != NAL_UNIT_CODED_SLICE_RADL, "Invalid NAL unit type");
    }
  }

  // When a picture is a trailing picture, it shall not be a RADL or RASL picture.
  if(this->getAssociatedIRAPPOC() < this->getPOC())
  {
    CHECK(nalUnitType == NAL_UNIT_CODED_SLICE_RASL ||
          nalUnitType == NAL_UNIT_CODED_SLICE_RADL, "Invalid NAL unit type");
  }


  // No RASL pictures shall be present in the bitstream that are associated with
  // an IDR picture.
  if (nalUnitType == NAL_UNIT_CODED_SLICE_RASL)
  {
    CHECK( this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_IDR_N_LP   ||
           this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL, "Invalid NAL unit type");
  }

  // No RADL pictures shall be present in the bitstream that are associated with
  // a BLA picture having nal_unit_type equal to BLA_N_LP or that are associated
  // with an IDR picture having nal_unit_type equal to IDR_N_LP.
  if (nalUnitType == NAL_UNIT_CODED_SLICE_RADL)
  {
    CHECK (this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_IDR_N_LP, "Invalid NAL unit type");
  }

  // loop through all pictures in the reference picture buffer
  for( auto & pcPic: rcListPic )
  {
    if( pcPic->progress < Picture::reconstructed || pcPic->wasLost || pcPic->error )
    {
      continue;
    }
    if( pcPic->poc == this->getPOC())
    {
      continue;
    }
    const Slice* pcSlice = pcPic->slices[0];

    // Any picture that has PicOutputFlag equal to 1 that precedes an IRAP picture
    // in decoding order shall precede the IRAP picture in output order.
    // (Note that any picture following in output order would be present in the DPB)
//    if(pcSlice->getPicHeader()->getPicOutputFlag() == 1 && !this->getPicHeader()->getNoOutputOfPriorPicsFlag())
    if(pcSlice->getPicHeader()->getPicOutputFlag() == 1 && !this->getNoOutputOfPriorPicsFlag()) 
    {
      if (nalUnitType == NAL_UNIT_CODED_SLICE_CRA ||
          nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP ||
          nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL)
      {
        CHECK(pcPic->poc >= this->getPOC(), "Invalid POC");
      }
    }

    // Any picture that has PicOutputFlag equal to 1 that precedes an IRAP picture
    // in decoding order shall precede any RADL picture associated with the IRAP
    // picture in output order.
    if(pcSlice->getPicHeader()->getPicOutputFlag() == 1)
    {
      if (nalUnitType == NAL_UNIT_CODED_SLICE_RADL)
      {
        // rpcPic precedes the IRAP in decoding order
        if(this->getAssociatedIRAPPOC() > pcSlice->getAssociatedIRAPPOC())
        {
          // rpcPic must not be the IRAP picture
          if(this->getAssociatedIRAPPOC() != pcPic->poc)
          {
            CHECK( pcPic->poc >= this->getPOC(), "Invalid POC");
          }
        }
      }
    }

    // When a picture is a leading picture, it shall precede, in decoding order,
    // all trailing pictures that are associated with the same IRAP picture.
    if (nalUnitType == NAL_UNIT_CODED_SLICE_RASL ||
        nalUnitType == NAL_UNIT_CODED_SLICE_RADL )
      {
        if(pcSlice->getAssociatedIRAPPOC() == this->getAssociatedIRAPPOC())
        {
          // rpcPic is a picture that preceded the leading in decoding order since it exist in the DPB
          // rpcPic would violate the constraint if it was a trailing picture
          CHECK( pcPic->poc > this->getAssociatedIRAPPOC(), "Invalid POC");
        }
      }

    // Any RASL picture associated with a CRA or BLA picture shall precede any
    // RADL picture associated with the CRA or BLA picture in output order
    if (nalUnitType == NAL_UNIT_CODED_SLICE_RASL)
    {
      if ((this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_CRA) &&
          this->getAssociatedIRAPPOC() == pcSlice->getAssociatedIRAPPOC())
      {
        if (pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_RADL)
        {
          CHECK( pcPic->poc <= this->getPOC(), "Invalid POC");
        }
      }
    }

    // Any RASL picture associated with a CRA picture shall follow, in output
    // order, any IRAP picture that precedes the CRA picture in decoding order.
    if (nalUnitType == NAL_UNIT_CODED_SLICE_RASL)
    {
      if(this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_CRA)
      {
        if(pcSlice->getPOC() < this->getAssociatedIRAPPOC() &&
          (
            pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP   ||
            pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL ||
            pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA))
        {
          CHECK(this->getPOC() <= pcSlice->getPOC(), "Invalid POC");
        }
      }
    }
  }
}

bool Slice::checkThatAllRefPicsAreAvailable( const PicList&              rcListPic,
                                             const ReferencePictureList* pRPL,
                                             int                         numActiveRefPics,
                                             int*                        missingPOC,
                                             int*                        missingRefPicIndex ) const
{
  if( this->isIDR() )
    return true;   // Assume that all pic in the DPB will be flushed anyway so no need to check.

  *missingPOC         = 0;
  *missingRefPicIndex = 0;

  // Check long term ref pics
  for( int ii = 0; pRPL->getNumberOfLongtermPictures() > 0 && ii < numActiveRefPics; ii++ )
  {
    if( !pRPL->isRefPicLongterm( ii ) )
      continue;

    const int checkPoc    = pRPL->getRefPicIdentifier( ii );
    bool      isAvailable = 0;
    for( auto& rpcPic: rcListPic )
    {
      const int bitsForPoc = rpcPic->cs->sps->getBitsForPOC();
      const int poc        = rpcPic->getPOC();
      const int refPoc     = pRPL->calcLTRefPOC( this->getPOC(), bitsForPoc, ii );

      if( rpcPic->dpbReferenceMark == Picture::LongTerm && isLTPocEqual( poc, refPoc, bitsForPoc, pRPL->getDeltaPocMSBPresentFlag( ii ) )  )
      {
        isAvailable = 1;
        break;
      }
    }
    if( isAvailable )
      continue;

    // if there was no such long-term check the short terms
    for( auto& rpcPic: rcListPic )
    {
      const int bitsForPoc = rpcPic->cs->sps->getBitsForPOC();
      const int poc        = rpcPic->getPOC();
      const int refPoc     = pRPL->calcLTRefPOC( this->getPOC(), bitsForPoc, ii );

      if( rpcPic->dpbReferenceMark == Picture::ShortTerm && isLTPocEqual( poc, refPoc, bitsForPoc, pRPL->getDeltaPocMSBPresentFlag( ii ) )  )
      {
        isAvailable      = 1;
        rpcPic->dpbReferenceMark  = Picture::LongTerm;
        break;
      }
    }

    if( !isAvailable )
    {
      msg( ERROR, "Current picture: %d Long-term reference picture with POC = %3d seems to have been removed or not correctly decoded.\n", this->getPOC(), checkPoc );

      *missingPOC         = checkPoc;
      *missingRefPicIndex = ii;
      return false;
    }
  }

  // Check short term ref pics
  for( int ii = 0; ii < numActiveRefPics; ii++ )
  {
    if( pRPL->isRefPicLongterm( ii ) )
      continue;

    const int checkPoc    = this->getPOC() + pRPL->getRefPicIdentifier( ii );
    bool      isAvailable = false;
    for( auto& rpcPic: rcListPic )
    {
      if( rpcPic->getPOC() == checkPoc && rpcPic->dpbReferenceMark )
      {
        isAvailable = true;
        break;
      }
    }

    // report that a picture is lost if it is in the Reference Picture List but not in the DPB
    if( !isAvailable && pRPL->getNumberOfShorttermPictures() > 0 )
    {
      msg( ERROR, "Current picture: %d Short-term reference picture with POC = %3d seems to have been removed or not correctly decoded.\n", this->getPOC(), checkPoc );

      *missingPOC         = checkPoc;
      *missingRefPicIndex = ii;
      return false;
    }
  }

  return true;
}

//! get AC and DC values for weighted pred
void  Slice::getWpAcDcParam(const WPACDCParam *&wp) const
{
  wp = m_weightACDCParam;
}

//! init AC and DC values for weighted pred
void  Slice::initWpAcDcParam()
{
  for(int iComp = 0; iComp < MAX_NUM_COMPONENT; iComp++ )
  {
    m_weightACDCParam[iComp].iAC = 0;
    m_weightACDCParam[iComp].iDC = 0;
  }
}

//! get tables for weighted prediction
void Slice::getWpScaling( RefPicList e, int iRefIdx, const WPScalingParam*& wp ) const
{
  CHECK( e >= NUM_REF_PIC_LIST_01, "Invalid picture reference list" );
  wp = m_weightPredTable[e][iRefIdx >= 0 ? iRefIdx : 0];   // iRefIdx can be -1
}

void Slice::getWpScaling( RefPicList e, int iRefIdx, WPScalingParam*& wp )
{
  CHECK( e >= NUM_REF_PIC_LIST_01, "Invalid picture reference list" );
  wp = m_weightPredTable[e][iRefIdx >= 0 ? iRefIdx : 0];   // iRefIdx can be -1
}

//! reset Default WP tables settings : no weight.
void  Slice::resetWpScaling()
{
  for ( int e=0 ; e<NUM_REF_PIC_LIST_01 ; e++ )
  {
    for ( int i=0 ; i<MAX_NUM_REF ; i++ )
    {
      for ( int yuv=0 ; yuv<MAX_NUM_COMPONENT ; yuv++ )
      {
        WPScalingParam  *pwp = &(m_weightPredTable[e][i][yuv]);
        pwp->bPresentFlag      = false;
        pwp->uiLog2WeightDenom = 0;
        pwp->uiLog2WeightDenom = 0;
        pwp->iWeight           = 1;
        pwp->iOffset           = 0;
      }
    }
  }
}

//! init WP table
void  Slice::initWpScaling(const SPS *sps)
{
  const bool bUseHighPrecisionPredictionWeighting = false;// sps->getSpsRangeExtension().getHighPrecisionOffsetsEnabledFlag();
  for ( int e=0 ; e<NUM_REF_PIC_LIST_01 ; e++ )
  {
    for ( int i=0 ; i<MAX_NUM_REF ; i++ )
    {
      for ( int yuv=0 ; yuv<MAX_NUM_COMPONENT ; yuv++ )
      {
        WPScalingParam  *pwp = &(m_weightPredTable[e][i][yuv]);
        if ( !pwp->bPresentFlag )
        {
          // Inferring values not present :
          pwp->iWeight = (1 << pwp->uiLog2WeightDenom);
          pwp->iOffset = 0;
        }

        const int offsetScalingFactor = bUseHighPrecisionPredictionWeighting ? 1 : ( 1 << ( sps->getBitDepth() - 8 ) );

        pwp->w      = pwp->iWeight;
        pwp->o      = pwp->iOffset * offsetScalingFactor; //NOTE: This value of the ".o" variable is never used - .o is set immediately before it gets used
        pwp->shift  = pwp->uiLog2WeightDenom;
        pwp->round  = (pwp->uiLog2WeightDenom>=1) ? (1 << (pwp->uiLog2WeightDenom-1)) : (0);
      }
    }
  }
}

void PicHeader::getWpScaling(RefPicList e, int iRefIdx, WPScalingParam *&wp) const
{
  CHECK(e >= NUM_REF_PIC_LIST_01, "Invalid picture reference list");
  wp = (WPScalingParam *) m_weightPredTable[e][iRefIdx];
}

// ------------------------------------------------------------------------------------------------
// Sequence parameter set (SPS)
// ------------------------------------------------------------------------------------------------



RPLList& SPS::createRPLList( int l, int numRPL )
{
  m_RPLList[l].resize( numRPL );
  m_numRPL[l] = numRPL;
  m_rpl1IdxPresentFlag = ( m_RPLList[0].size() != m_RPLList[1].size() );
  return m_RPLList[l];
}


const int SPS::m_winUnitX[] = { 1,2,2,1 };
const int SPS::m_winUnitY[] = { 1,2,1,1 };


void ChromaQpMappingTable::deriveChromaQPMappingTables()
{
  for (int i = 0; i < getNumQpTables(); i++)
  {
    const int qpBdOffsetC = m_qpBdOffset;
    const int numPtsInCQPTableMinus1 = getNumPtsInCQPTableMinus1(i);
    std::vector<int> qpInVal( numPtsInCQPTableMinus1 + 2 );
    std::vector<int> qpOutVal( numPtsInCQPTableMinus1 + 2 );

    qpInVal[0] = getQpTableStartMinus26(i) + 26;
    qpOutVal[0] = qpInVal[0];
    for (int j = 0; j <= numPtsInCQPTableMinus1; j++)
    {
      qpInVal[j + 1] = qpInVal[j] + getDeltaQpInValMinus1(i, j) + 1;
      qpOutVal[j + 1] = qpOutVal[j] + getDeltaQpOutVal(i, j);
    }

    for( int j = 0; j <= numPtsInCQPTableMinus1 + 1; j++ )
    {
      CHECK(qpInVal[j]  < -qpBdOffsetC || qpInVal[j]  > MAX_QP, "qpInVal out of range");
      CHECK(qpOutVal[j] < -qpBdOffsetC || qpOutVal[j] > MAX_QP, "qpOutVal out of range");
    }

    m_chromaQpMappingTables[i].resize( MAX_QP + qpBdOffsetC + 1 );
    m_chromaQpMappingTables[i][qpInVal[0] + qpBdOffsetC] = qpOutVal[0];   // +qpBdOffsetC, because we use a vector here, instead of a map as in VTM
    for( int k = qpInVal[0] - 1; k >= -qpBdOffsetC; k-- )
    {
      m_chromaQpMappingTables[i][k + qpBdOffsetC] = Clip3( -qpBdOffsetC, MAX_QP, m_chromaQpMappingTables[i][k + 1 + qpBdOffsetC] - 1 );
    }
    for( int j = 0; j <= numPtsInCQPTableMinus1; j++ )
    {
      int sh = ( getDeltaQpInValMinus1( i, j ) + 1 ) >> 1;
      for( int k = qpInVal[j] + 1, m = 1; k <= qpInVal[j + 1]; k++, m++ )
      {
        m_chromaQpMappingTables[i][k + qpBdOffsetC] =
          m_chromaQpMappingTables[i][qpInVal[j] + qpBdOffsetC] + ( ( qpOutVal[j + 1] - qpOutVal[j] ) * m + sh ) / ( getDeltaQpInValMinus1( i, j ) + 1 );
      }
    }
    for( int k = qpInVal[numPtsInCQPTableMinus1 + 1] + 1; k <= MAX_QP; k++ )
    {
      m_chromaQpMappingTables[i][k + qpBdOffsetC] = Clip3( -qpBdOffsetC, MAX_QP, m_chromaQpMappingTables[i][k - 1 + qpBdOffsetC] + 1 );
    }
  }
}


void PPS::resetTileSliceInfo()
{
  m_numExpTileCols = 0;
  m_numExpTileRows = 0;
  m_numTileCols    = 0;
  m_numTileRows    = 0;
  m_numSlicesInPic = 0;
  m_tileColumnWidth.clear();
  m_tileRowHeight.clear();
  m_tileColBd.clear();
  m_tileRowBd.clear();
  m_ctuToTileCol.clear();
  m_ctuToTileRow.clear();
  m_rectSlices.clear();
  m_sliceMap.clear();
}

/**
 - initialize tile row/column sizes and boundaries
 */
void PPS::initTiles()
{
  int       colIdx, rowIdx;
  int       ctuX, ctuY;
  
  // check explicit tile column sizes
  uint32_t  remainingWidthInCtu  = m_picWidthInCtu;
  for( colIdx = 0; colIdx < m_numExpTileCols; colIdx++ )
  {
    CHECK(m_tileColumnWidth[colIdx] > remainingWidthInCtu,    "Tile column width exceeds picture width");
    remainingWidthInCtu -= m_tileColumnWidth[colIdx];
  }

  // divide remaining picture width into uniform tile columns
  uint32_t  uniformTileColWidth = m_tileColumnWidth[colIdx-1];
  while( remainingWidthInCtu > 0 )
  {
    CHECK(colIdx >= MAX_TILE_COLS, "Number of tile columns exceeds valid range");
    uniformTileColWidth = std::min(remainingWidthInCtu, uniformTileColWidth);
    m_tileColumnWidth.push_back( uniformTileColWidth );
    remainingWidthInCtu -= uniformTileColWidth;
    colIdx++;
  }
  m_numTileCols = colIdx;
    
  // check explicit tile row sizes
  uint32_t  remainingHeightInCtu  = m_picHeightInCtu;
  for( rowIdx = 0; rowIdx < m_numExpTileRows; rowIdx++ )
  {
    CHECK(m_tileRowHeight[rowIdx] > remainingHeightInCtu,     "Tile row height exceeds picture height");
    remainingHeightInCtu -= m_tileRowHeight[rowIdx];
  }
    
  // divide remaining picture height into uniform tile rows
  uint32_t  uniformTileRowHeight = m_tileRowHeight[rowIdx - 1];
  while( remainingHeightInCtu > 0 )
  {
    uniformTileRowHeight = std::min(remainingHeightInCtu, uniformTileRowHeight);
    m_tileRowHeight.push_back( uniformTileRowHeight );
    remainingHeightInCtu -= uniformTileRowHeight;
    rowIdx++;
  }
  m_numTileRows = rowIdx;

  // set left column bounaries
  m_tileColBd.push_back( 0 );
  for( colIdx = 0; colIdx < m_numTileCols; colIdx++ )
  {
    m_tileColBd.push_back( m_tileColBd[ colIdx ] + m_tileColumnWidth[ colIdx ] );
  }
  
  // set top row bounaries
  m_tileRowBd.push_back( 0 );
  for( rowIdx = 0; rowIdx < m_numTileRows; rowIdx++ )
  {
    m_tileRowBd.push_back( m_tileRowBd[ rowIdx ] + m_tileRowHeight[ rowIdx ] );
  }

  // set mapping between horizontal CTU address and tile column index
  colIdx = 0;
  for( ctuX = 0; ctuX <= m_picWidthInCtu; ctuX++ )
  {
    if( ctuX == m_tileColBd[ colIdx + 1 ] )
    {
      colIdx++;
    }
    m_ctuToTileCol.push_back( colIdx );
  }
  
  // set mapping between vertical CTU address and tile row index
  rowIdx = 0;
  for( ctuY = 0; ctuY <= m_picHeightInCtu; ctuY++ )
  {
    if( ctuY == m_tileRowBd[ rowIdx + 1 ] )
    {
      rowIdx++;
    }
    m_ctuToTileRow.push_back( rowIdx );
  }
}

void PPS::initRectSlices()
{
  CHECK(m_numSlicesInPic > MAX_SLICES, "Number of slices in picture exceeds valid range");
  m_rectSlices.resize(m_numSlicesInPic);
}

/**
 - initialize mapping between rectangular slices and CTUs
 */
void PPS::initRectSliceMap(const SPS  *sps)
{
  if( getSingleSlicePerSubPicFlag() )
  {
    CHECK (sps==nullptr, "RectSliceMap can only be initialized for slice_per_sub_pic_flag with a valid SPS");
    m_numSlicesInPic = sps->getNumSubPics();

    // allocate new memory for slice list
    CHECK(m_numSlicesInPic > MAX_SLICES, "Number of slices in picture exceeds valid range");
    m_sliceMap.resize( m_numSlicesInPic );

    if (sps->getNumSubPics() > 1)
    {
      // Q2001 v15 equation 29
      std::vector<uint32_t> subpicWidthInTiles;
      std::vector<uint32_t> subpicHeightInTiles;
      std::vector<uint32_t> subpicHeightLessThanOneTileFlag;
      subpicWidthInTiles.resize(sps->getNumSubPics());
      subpicHeightInTiles.resize(sps->getNumSubPics());
      subpicHeightLessThanOneTileFlag.resize(sps->getNumSubPics());
      for (uint32_t i = 0; i <sps->getNumSubPics(); i++)
      {
        uint32_t leftX = sps->getSubPicCtuTopLeftX(i);
        uint32_t rightX = leftX + sps->getSubPicWidth(i) - 1;
        subpicWidthInTiles[i] = m_ctuToTileCol[rightX] + 1 - m_ctuToTileCol[leftX];

        uint32_t topY = sps->getSubPicCtuTopLeftY(i);
        uint32_t bottomY = topY + sps->getSubPicHeight(i) - 1;
        subpicHeightInTiles[i] = m_ctuToTileRow[bottomY] + 1 - m_ctuToTileRow[topY];

        if (subpicHeightInTiles[i] == 1 && sps->getSubPicHeight(i) < m_tileRowHeight[m_ctuToTileRow[topY]] )
        {
          subpicHeightLessThanOneTileFlag[i] = 1;
        }
        else
        {
          subpicHeightLessThanOneTileFlag[i] = 0;
        }
      }

      for( int i = 0; i < m_numSlicesInPic; i++ )
      {
        CHECK(m_numSlicesInPic != sps->getNumSubPics(), "in single slice per subpic mode, number of slice and subpic shall be equal");
        m_sliceMap[ i ].resetSliceMap();
        if (subpicHeightLessThanOneTileFlag[i])
        {
          m_sliceMap[i].addCtusToSlice(sps->getSubPicCtuTopLeftX(i), sps->getSubPicCtuTopLeftX(i) + sps->getSubPicWidth(i),
                                       sps->getSubPicCtuTopLeftY(i), sps->getSubPicCtuTopLeftY(i) + sps->getSubPicHeight(i), m_picWidthInCtu);
        }
        else
        {
          uint32_t tileX = m_ctuToTileCol[sps->getSubPicCtuTopLeftX(i)];
          uint32_t tileY = m_ctuToTileRow[sps->getSubPicCtuTopLeftY(i)];
          for (uint32_t j = 0; j< subpicHeightInTiles[i]; j++)
          {
            for (uint32_t k = 0; k < subpicWidthInTiles[i]; k++)
            {
              m_sliceMap[i].addCtusToSlice(getTileColumnBd(tileX + k), getTileColumnBd(tileX + k + 1), getTileRowBd(tileY + j), getTileRowBd(tileY + j + 1), m_picWidthInCtu);
            }
          }
        }
      }
      subpicWidthInTiles.clear();
      subpicHeightInTiles.clear();
      subpicHeightLessThanOneTileFlag.clear();
    }
    else
    {
      m_sliceMap[0].resetSliceMap();
      for (int tileY=0; tileY<m_numTileRows; tileY++)
      {
        for (int tileX=0; tileX<m_numTileCols; tileX++)
        {
          m_sliceMap[0].addCtusToSlice(getTileColumnBd(tileX), getTileColumnBd(tileX + 1),
                                       getTileRowBd(tileY), getTileRowBd(tileY + 1), m_picWidthInCtu);
        }
      }
      m_sliceMap[0].setSliceID(0);
    }
  }
  else
  {
    // allocate new memory for slice list
    CHECK(m_numSlicesInPic > MAX_SLICES, "Number of slices in picture exceeds valid range");
    m_sliceMap.resize( m_numSlicesInPic );
    // generate CTU maps for all rectangular slices in picture
    for( uint32_t i = 0; i < m_numSlicesInPic; i++ )
    {
      m_sliceMap[ i ].resetSliceMap();

      // get position of first tile in slice
      uint32_t tileX =  m_rectSlices[ i ].getTileIdx() % m_numTileCols;
      uint32_t tileY =  m_rectSlices[ i ].getTileIdx() / m_numTileCols;

      // infer slice size for last slice in picture
      if( i == m_numSlicesInPic-1 )
      {
        m_rectSlices[ i ].setSliceWidthInTiles ( m_numTileCols - tileX );
        m_rectSlices[ i ].setSliceHeightInTiles( m_numTileRows - tileY );
        m_rectSlices[ i ].setNumSlicesInTile( 1 );
      }

      // set slice index
      m_sliceMap[ i ].setSliceID(i);

      // complete tiles within a single slice case
      if( m_rectSlices[ i ].getSliceWidthInTiles( ) > 1 || m_rectSlices[ i ].getSliceHeightInTiles( ) > 1)
      {
        for( uint32_t j = 0; j < m_rectSlices[ i ].getSliceHeightInTiles( ); j++ )
        {
          for( uint32_t k = 0; k < m_rectSlices[ i ].getSliceWidthInTiles( ); k++ )
          {
            m_sliceMap[ i ].addCtusToSlice( getTileColumnBd(tileX + k), getTileColumnBd(tileX + k +1),
                                            getTileRowBd(tileY + j), getTileRowBd(tileY + j +1), m_picWidthInCtu);
          }
        }
      }
      // multiple slices within a single tile case
      else
      {
        uint32_t  numSlicesInTile = m_rectSlices[ i ].getNumSlicesInTile( );

        uint32_t ctuY = getTileRowBd( tileY );
        for( uint32_t j = 0; j < numSlicesInTile-1; j++ )
        {
          m_sliceMap[ i ].addCtusToSlice( getTileColumnBd(tileX), getTileColumnBd(tileX+1),
                                          ctuY, ctuY + m_rectSlices[ i ].getSliceHeightInCtu(), m_picWidthInCtu);
          ctuY += m_rectSlices[ i ].getSliceHeightInCtu();
          i++;
          m_sliceMap[ i ].resetSliceMap();
          m_sliceMap[ i ].setSliceID(i);
        }

        // infer slice height for last slice in tile
        CHECK( ctuY >= getTileRowBd( tileY + 1 ), "Invalid rectangular slice signalling");
        m_rectSlices[ i ].setSliceHeightInCtu( getTileRowBd( tileY + 1 ) - ctuY );
        m_sliceMap[ i ].addCtusToSlice( getTileColumnBd(tileX), getTileColumnBd(tileX+1),
                                        ctuY, getTileRowBd( tileY + 1 ), m_picWidthInCtu);
      }
    }
  }
  // check for valid rectangular slice map
  checkSliceMap();
}

/**
- initialize mapping between subpicture and CTUs
*/
void PPS::initSubPic( const SPS &sps )
{
  if( getSubPicIdMappingPresentFlag() )
  {
    // When signalled, the number of subpictures has to match in PPS and SPS
    CHECK( getNumSubPics() != sps.getNumSubPics(), "pps_num_subpics_minus1 shall be equal to sps_num_subpics_minus1" );
  }
  else
  {
    // When not signalled  set the numer equal for convenient access
    setNumSubPics( sps.getNumSubPics() );
  }

  CHECK( getNumSubPics() > MAX_NUM_SUB_PICS, "Number of sub-pictures in picture exceeds valid range" );
  m_subPics.resize(getNumSubPics());

  // Check that no subpicture is specified outside of the conformance cropping window
  for(int i = 0; i < sps.getNumSubPics(); i++)
  {
    CHECK( (sps.getSubPicCtuTopLeftX(i) * sps.getCTUSize()) >=
          (sps.getMaxPicWidthInLumaSamples() - sps.getConformanceWindow().getWindowRightOffset() * SPS::getWinUnitX(sps.getChromaFormatIdc())),
          "No subpicture can be located completely outside of the conformance cropping window");
    CHECK( ((sps.getSubPicCtuTopLeftX(i) + sps.getSubPicWidth(i)) * sps.getCTUSize()) <= (sps.getConformanceWindow().getWindowLeftOffset() * SPS::getWinUnitX(sps.getChromaFormatIdc())),
          "No subpicture can be located completely outside of the conformance cropping window" );
    CHECK( (sps.getSubPicCtuTopLeftY(i) * sps.getCTUSize()) >=
          (sps.getMaxPicHeightInLumaSamples()  - sps.getConformanceWindow().getWindowBottomOffset() * SPS::getWinUnitY(sps.getChromaFormatIdc())),
          "No subpicture can be located completely outside of the conformance cropping window");
    CHECK( ((sps.getSubPicCtuTopLeftY(i) + sps.getSubPicHeight(i)) * sps.getCTUSize()) <= (sps.getConformanceWindow().getWindowTopOffset() * SPS::getWinUnitY(sps.getChromaFormatIdc())),
          "No subpicture can be located completely outside of the conformance cropping window");
  }

  // m_ctuSize,  m_picWidthInCtu, and m_picHeightInCtu might not be initialized yet.
  if( m_ctuSize == 0 || m_picWidthInCtu == 0 || m_picHeightInCtu == 0 )
  {
    m_ctuSize = sps.getCTUSize();
    m_picWidthInCtu = (m_picWidthInLumaSamples + m_ctuSize - 1) / m_ctuSize;
    m_picHeightInCtu = (m_picHeightInLumaSamples + m_ctuSize - 1) / m_ctuSize;
  }
  for( int i=0; i< getNumSubPics(); i++ )
  {
    m_subPics[i].setSubPicIdx(i);
    if( sps.getSubPicIdMappingExplicitlySignalledFlag() )
    {
      if( m_subPicIdMappingPresentFlag )
      {
        m_subPics[i].setSubPicID( m_subPicId[i] );
      }
      else
      {
        m_subPics[i].setSubPicID( sps.getSubPicId(i) );
      }
    }
    else
    {
      m_subPics[i].setSubPicID(i);
    }
    m_subPics[i].setSubPicCtuTopLeftX(sps.getSubPicCtuTopLeftX(i));
    m_subPics[i].setSubPicCtuTopLeftY(sps.getSubPicCtuTopLeftY(i));
    m_subPics[i].setSubPicWidthInCTUs(sps.getSubPicWidth(i));
    m_subPics[i].setSubPicHeightInCTUs(sps.getSubPicHeight(i));

    uint32_t firstCTU = sps.getSubPicCtuTopLeftY(i) * m_picWidthInCtu + sps.getSubPicCtuTopLeftX(i);
    m_subPics[i].setFirstCTUInSubPic(firstCTU);
    uint32_t lastCTU = (sps.getSubPicCtuTopLeftY(i) + sps.getSubPicHeight(i) - 1) * m_picWidthInCtu + sps.getSubPicCtuTopLeftX(i) + sps.getSubPicWidth(i) - 1;
    m_subPics[i].setLastCTUInSubPic(lastCTU);

    uint32_t left = sps.getSubPicCtuTopLeftX(i) * m_ctuSize;
    m_subPics[i].setSubPicLeft(left);

    uint32_t right = std::min(m_picWidthInLumaSamples - 1, (sps.getSubPicCtuTopLeftX(i) + sps.getSubPicWidth(i)) * m_ctuSize - 1);
    m_subPics[i].setSubPicRight(right);

    m_subPics[i].setSubPicWidthInLumaSample(right - left + 1);

    uint32_t top = sps.getSubPicCtuTopLeftY(i) * m_ctuSize;
    m_subPics[i].setSubPicTop(top);

    uint32_t bottom = std::min(m_picHeightInLumaSamples - 1, (sps.getSubPicCtuTopLeftY(i) + sps.getSubPicHeight(i)) * m_ctuSize - 1);

    m_subPics[i].setSubPicHeightInLumaSample(bottom - top + 1);

    m_subPics[i].setSubPicBottom(bottom);

    m_subPics[i].clearCTUAddrList();

    if( m_numSlicesInPic == 1 )
    {
      CHECK( getNumSubPics() != 1, "only one slice in picture, but number of subpic is not one" );
      m_subPics[i].addAllCtusInPicToSubPic(0, getPicWidthInCtu(), 0, getPicHeightInCtu(), getPicWidthInCtu());
      m_subPics[i].setNumSlicesInSubPic(1);
    }
    else
    {
      int numSlicesInSubPic = 0;
      int idxLastSliceInSubpic = -1;
      int idxFirstSliceAfterSubpic = m_numSlicesInPic;
      for( int j = 0; j < m_numSlicesInPic; j++ )
      {
        uint32_t ctu = m_sliceMap[j].getCtuAddrInSlice(0);
        uint32_t ctu_x = ctu % m_picWidthInCtu;
        uint32_t ctu_y = ctu / m_picWidthInCtu;
        if (ctu_x >= sps.getSubPicCtuTopLeftX(i) &&
          ctu_x < (sps.getSubPicCtuTopLeftX(i) + sps.getSubPicWidth(i)) &&
          ctu_y >= sps.getSubPicCtuTopLeftY(i) &&
          ctu_y < (sps.getSubPicCtuTopLeftY(i) + sps.getSubPicHeight(i)))
        {
          // add ctus in a slice to the subpicture it belongs to
          m_subPics[i].addCTUsToSubPic(m_sliceMap[j].getCtuAddrList());
          numSlicesInSubPic++;
          idxLastSliceInSubpic = j;
        }
        else if (idxFirstSliceAfterSubpic == m_numSlicesInPic && idxLastSliceInSubpic != -1)
        {
          idxFirstSliceAfterSubpic = j;
        }
      }
      CHECK( idxFirstSliceAfterSubpic < idxLastSliceInSubpic, "The signalling order of slices shall follow the coding order" );
      m_subPics[i].setNumSlicesInSubPic(numSlicesInSubPic);
    }
    m_subPics[i].setTreatedAsPicFlag(sps.getSubPicTreatedAsPicFlag(i));
    m_subPics[i].setloopFilterAcrossSubPicEnabledFlag(sps.getLoopFilterAcrossSubpicEnabledFlag(i));
  }
}

const SubPic& PPS::getSubPicFromPos(const Position& pos)  const
{
  for (int i = 0; i< m_numSubPics; i++)
  {
    if (m_subPics[i].isContainingPos(pos))
    {
      return m_subPics[i];
    }
  }
  return m_subPics[0];
}

const SubPic& PPS::getSubPicFromCU(const CodingUnit& cu) const
{
  const Position lumaPos = cu.Y().valid() ? cu.Y().pos() : recalcPosition(cu.chromaFormat, cu.chType(), CHANNEL_TYPE_LUMA, cu.blocks[cu.chType()].pos());
  return getSubPicFromPos(lumaPos);
}

uint32_t PPS::getSubPicIdxFromSubPicId( uint32_t subPicId ) const
{
  for (int i = 0; i < m_numSubPics; i++)
  {
    if(m_subPics[i].getSubPicID() == subPicId)
    {
      return i;
    }
  }
  return 0;
}

void PPS::checkSliceMap()
{
  uint32_t i;
  std::vector<uint32_t>  ctuList, sliceList;
  uint32_t picSizeInCtu = getPicWidthInCtu() * getPicHeightInCtu();
  for( i = 0; i < m_numSlicesInPic; i++ )
  {
    sliceList = m_sliceMap[ i ].getCtuAddrList();
    ctuList.insert( ctuList.end(), sliceList.begin(), sliceList.end() );
  }
  CHECK( ctuList.size() < picSizeInCtu, "Slice map contains too few CTUs");
  CHECK( ctuList.size() > picSizeInCtu, "Slice map contains too many CTUs");
  std::sort( ctuList.begin(), ctuList.end() );
  for( i = 1; i < ctuList.size(); i++ )
  {
    CHECK( ctuList[i] > ctuList[i-1]+1, "CTU missing in slice map");
    CHECK( ctuList[i] == ctuList[i-1],  "CTU duplicated in slice map");
  }
}

void PPS::finalizePPSPartitioning( const SPS* pcSPS )
{
  // initialize tile/slice info for no partitioning case
  if( getNoPicPartitionFlag() )
  {
    resetTileSliceInfo();
    setLog2CtuSize( ( int ) ceil( log2( pcSPS->getCTUSize() ) ) );
    setNumExpTileColumns( 1 );
    setNumExpTileRows( 1 );
    addTileColumnWidth( getPicWidthInCtu()  );
    addTileRowHeight  ( getPicHeightInCtu() );
    initTiles();
    setRectSliceFlag( 1 );
    setNumSlicesInPic( 1 );
    initRectSlices();
    setTileIdxDeltaPresentFlag( 0 );
    setSliceTileIdx( 0, 0 );
    initRectSliceMap( pcSPS );
    // when no Pic partition, number of sub picture shall be less than 2
    CHECK( getNumSubPics() >= 2, "error, no picture partitions, but have equal to or more than 2 sub pictures" );
  }
  else
  {
    CHECK( getCtuSize() != pcSPS->getCTUSize(), "PPS CTU size does not match CTU size in SPS" );
    if( getRectSliceFlag() )
    {
      initRectSliceMap( pcSPS );
    }
  }

  initSubPic( *pcSPS );
}


SliceMap::SliceMap()
{
  m_ctuAddrInSlice.clear();
}

SliceMap::~SliceMap()
{
  m_numCtuInSlice = 0;
  m_ctuAddrInSlice.clear();
}

/** Sorts the deltaPOC and Used by current values in the RPS based on the deltaPOC values.
 *  deltaPOC values are sorted with -ve values before the +ve values.  -ve values are in decreasing order.
 *  +ve values are in increasing order.
 * \returns void
 */

ReferencePictureList::ReferencePictureList()
{
  ::memset( this, 0, sizeof( *this ) );
}

void ReferencePictureList::clear()
{
  ::memset( this, 0, sizeof( *this ) );
}

void ReferencePictureList::setRefPicIdentifier( int idx, int identifier, bool isLongterm, bool isInterLayerRefPic, int interLayerIdx )
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setRefPicIdentifier out of range (0-15)" );
  m_refPicIdentifier[idx] = identifier;
  m_isLongtermRefPic[idx] = isLongterm;

  m_deltaPocMSBPresentFlag[idx] = false;
  m_deltaPOCMSBCycleLT[idx] = 0;
  
  m_isInterLayerRefPic[idx] = isInterLayerRefPic;
  m_interLayerRefPicIdx[idx] = interLayerIdx;
}

int ReferencePictureList::getRefPicIdentifier(int idx) const
{
  return m_refPicIdentifier[idx];
}


bool ReferencePictureList::isRefPicLongterm(int idx) const
{
  return m_isLongtermRefPic[idx];
}

void ReferencePictureList::setRefPicLongterm(int idx,bool isLongterm)
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setRefPicLongterm out of range (0-15)" );
  m_isLongtermRefPic[idx] = isLongterm;
}

void ReferencePictureList::setNumberOfShorttermPictures(int numberOfStrp)
{
  m_numberOfShorttermPictures = numberOfStrp;
}

int ReferencePictureList::getNumberOfShorttermPictures() const
{
  return m_numberOfShorttermPictures;
}

void ReferencePictureList::setNumberOfLongtermPictures(int numberOfLtrp)
{
  m_numberOfLongtermPictures = numberOfLtrp;
}

int ReferencePictureList::getNumberOfLongtermPictures() const
{
  return m_numberOfLongtermPictures;
}

void ReferencePictureList::setPOC(int idx, int POC)
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setPOC out of range (0-15)" );
  m_POC[idx] = POC;
}

int ReferencePictureList::getPOC(int idx) const
{
  return m_POC[idx];
}

void ReferencePictureList::setDeltaPocMSBCycleLT(int idx, int x)
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setDeltaPocMSBCycleLT out of range (0-15)" );
  m_deltaPOCMSBCycleLT[idx] = x;
}

void ReferencePictureList::setDeltaPocMSBPresentFlag(int idx, bool x)
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setDeltaPocMSBPresentFlag out of range (0-15)" );
  m_deltaPocMSBPresentFlag[idx] = x;
}

void ReferencePictureList::setInterLayerRefPicIdx( int idx, int layerIdc )
{
  CHECK( idx > MAX_NUM_REF_PICS, "RPL setInterLayerRefPicIdx out of range (0-15)" );
  m_interLayerRefPicIdx[idx] = layerIdc;
}

void ReferencePictureList::printRefPicInfo() const
{
  DTRACE(g_trace_ctx, D_RPSINFO, "RefPics = { ");
  int numRefPic = getNumberOfShorttermPictures() + getNumberOfLongtermPictures();
  for (int ii = 0; ii < numRefPic; ii++)
  {
    DTRACE(g_trace_ctx, D_RPSINFO, "%d%s ", m_refPicIdentifier[ii], (m_isLongtermRefPic[ii] == 1) ? "[LT]" : "[ST]");
  }
  DTRACE(g_trace_ctx, D_RPSINFO, "}\n");
}

bool ReferencePictureList::findInRefPicList( const Picture* checkRefPic, int currPicPoc, int layerId ) const
{
  // loop through all pictures in the Reference Picture Set
  // to see if the picture should be kept as reference picture
  for( int i = 0; i < getNumRefEntries(); i++ )
  {
    if( isInterLayerRefPic( i ) )
    {
      // Diagonal inter-layer prediction is not allowed
      CHECK( getRefPicIdentifier( i ), "ILRP identifier should be 0" );

      if( checkRefPic->poc == currPicPoc )
      {
        CHECK( checkRefPic->dpbReferenceMark != Picture::LongTerm, "LTRP needs long term mark" );
        return true;
      }
    }
    else if( checkRefPic->layerId == layerId )
    {
      if( isRefPicLongterm( i ) )
      {
        const int bitsForPoc = checkRefPic->cs->sps->getBitsForPOC();
        const int curPoc     = checkRefPic->getPOC();
        const int ltRefPoc   = calcLTRefPOC( currPicPoc, bitsForPoc, i );
        if( checkRefPic->dpbReferenceMark == Picture::LongTerm && isLTPocEqual( curPoc, ltRefPoc, bitsForPoc, getDeltaPocMSBPresentFlag( i ) ) )
        {
          return true;
        }
      }
      else
      {
        if( checkRefPic->poc == currPicPoc + getRefPicIdentifier( i ) )
        {
          return true;
        }
      }
    }
  }
  return false;
}

int ReferencePictureList::calcLTRefPOC( int currPoc, int bitsForPoc, int refPicIdentifier, bool pocMSBPresent, int deltaPocMSBCycle )
{
  const int pocCycle = 1 << bitsForPoc;
  int       ltrpPoc  = refPicIdentifier & ( pocCycle - 1 );
  if( pocMSBPresent )
  {
    ltrpPoc += currPoc - deltaPocMSBCycle * pocCycle - ( currPoc & ( pocCycle - 1 ) );
  }
  return ltrpPoc;
}

int ReferencePictureList::calcLTRefPOC( int currPoc, int bitsForPoc, int refPicIdx ) const
{
  return calcLTRefPOC( currPoc,
                       bitsForPoc,
                       this->getRefPicIdentifier( refPicIdx ),
                       this->getDeltaPocMSBPresentFlag( refPicIdx ),
                       this->getDeltaPocMSBCycleLT( refPicIdx ) );
}

bool isLTPocEqual( int poc1, int poc2, int bitsForPoc, bool msbPresent )
{
  if( msbPresent )
  {
    return poc1 == poc2;
  }

  const int pocCycle = 1 << bitsForPoc;
  return ( poc1 & ( pocCycle - 1 ) ) == ( poc2 & ( pocCycle - 1 ) );
}


ScalingList::ScalingList()
{
  reset();
}

void ScalingList::reset()
{
  memset( m_scalingListDC, 0, sizeof( m_scalingListDC ) );

  for (uint32_t id = 0; id < 28; id++)
  {
    const int matrixSize = ScalingList::matrixSize( id );
    m_scalingListCoef[id].assign( matrixSize * matrixSize, 0 );
  }
}

void Slice::scaleRefPicList( const PicHeader* picHeader )
{
  const SPS* sps = getSPS();
  const PPS* pps = getPPS();

  bool refPicIsSameRes = false;

  if( m_eSliceType == I_SLICE )
  {
    return;
  }
  
  for( int refList = 0; refList < NUM_REF_PIC_LIST_01; refList++ )
  {
    if( refList == 1 && m_eSliceType != B_SLICE )
    {
      continue;
    }

    for( int rIdx = 0; rIdx < m_aiNumRefIdx[refList]; rIdx++ )
    {
      // if rescaling is needed, otherwise just reuse the original picture pointer; it is needed for motion field, otherwise motion field requires a copy as well
      // reference resampling for the whole picture is not applied at decoder

      int xScale, yScale;
      CU::getRprScaling( sps, pps, m_apcRefPicList[refList][rIdx]->slices[0]->getPPS(), xScale, yScale );
      m_scalingRatio[refList][rIdx] = std::pair<int, int>( xScale, yScale );

      CHECK( !m_apcRefPicList[refList][rIdx], "scaleRefPicList missing ref pic" );
      if( m_apcRefPicList[refList][rIdx]->isRefScaled( pps ) == false )
      {
        refPicIsSameRes = true;
      }
    }
  }
  
  //Make sure that TMVP is disabled when there are no reference pictures with the same resolution
  if( !refPicIsSameRes )
  {
    CHECK( getPicHeader()->getEnableTMVPFlag() != 0, "TMVP cannot be enabled in pictures that have no reference pictures with the same resolution" )
  }
}

bool             operator == (const ConstraintInfo& op1, const ConstraintInfo& op2)
{
  if( op1.m_intraOnlyConstraintFlag                      != op2.m_intraOnlyConstraintFlag                        ) return false;
  if( op1.m_maxBitDepthConstraintIdc                     != op2.m_maxBitDepthConstraintIdc                       ) return false;
  if( op1.m_maxChromaFormatConstraintIdc                 != op2.m_maxChromaFormatConstraintIdc                   ) return false;
  if( op1.m_onePictureOnlyConstraintFlag                 != op2.m_onePictureOnlyConstraintFlag                   ) return false;
  if( op1.m_lowerBitRateConstraintFlag                   != op2.m_lowerBitRateConstraintFlag                     ) return false;
  if (op1.m_allLayersIndependentConstraintFlag           != op2.m_allLayersIndependentConstraintFlag             ) return false;
  if (op1.m_noMrlConstraintFlag                          != op2.m_noMrlConstraintFlag                            ) return false;
  if (op1.m_noIspConstraintFlag                          != op2.m_noIspConstraintFlag                            ) return false;
  if (op1.m_noMipConstraintFlag                          != op2.m_noMipConstraintFlag                            ) return false;
  if (op1.m_noLfnstConstraintFlag                        != op2.m_noLfnstConstraintFlag                          ) return false;
  if (op1.m_noMmvdConstraintFlag                         != op2.m_noMmvdConstraintFlag                           ) return false;
  if (op1.m_noSmvdConstraintFlag                         != op2.m_noSmvdConstraintFlag                           ) return false;
  if (op1.m_noProfConstraintFlag                         != op2.m_noProfConstraintFlag                           ) return false;
  if (op1.m_noPaletteConstraintFlag                      != op2.m_noPaletteConstraintFlag                        ) return false;
  if (op1.m_noActConstraintFlag                          != op2.m_noActConstraintFlag                            ) return false;
  if (op1.m_noLmcsConstraintFlag                         != op2.m_noLmcsConstraintFlag                           ) return false;
  if (op1.m_noExplicitScaleListConstraintFlag            != op2.m_noExplicitScaleListConstraintFlag              ) return false;
  if (op1.m_noVirtualBoundaryConstraintFlag              != op2.m_noVirtualBoundaryConstraintFlag                ) return false;
  if (op1.m_noChromaQpOffsetConstraintFlag               != op2.m_noChromaQpOffsetConstraintFlag                 ) return false;
  if (op1.m_noRprConstraintFlag                          != op2.m_noRprConstraintFlag                            ) return false;
  if (op1.m_noResChangeInClvsConstraintFlag              != op2.m_noResChangeInClvsConstraintFlag                ) return false;
  if (op1.m_noMttConstraintFlag                          != op2.m_noMttConstraintFlag                            ) return false;
  if( op1.m_noQtbttDualTreeIntraConstraintFlag           != op2.m_noQtbttDualTreeIntraConstraintFlag             ) return false;
  if( op1.m_noPartitionConstraintsOverrideConstraintFlag != op2.m_noPartitionConstraintsOverrideConstraintFlag   ) return false;
  if( op1.m_noSaoConstraintFlag                          != op2.m_noSaoConstraintFlag                            ) return false;
  if( op1.m_noAlfConstraintFlag                          != op2.m_noAlfConstraintFlag                            ) return false;
  if( op1.m_noCCAlfConstraintFlag                        != op2.m_noCCAlfConstraintFlag                          ) return false;
  if (op1.m_noWeightedPredictionConstraintFlag           != op2.m_noWeightedPredictionConstraintFlag             ) return false;
  if( op1.m_noRefWraparoundConstraintFlag                != op2.m_noRefWraparoundConstraintFlag                  ) return false;
  if( op1.m_noTemporalMvpConstraintFlag                  != op2.m_noTemporalMvpConstraintFlag                    ) return false;
  if( op1.m_noSbtmvpConstraintFlag                       != op2.m_noSbtmvpConstraintFlag                         ) return false;
  if( op1.m_noAmvrConstraintFlag                         != op2.m_noAmvrConstraintFlag                           ) return false;
  if( op1.m_noBdofConstraintFlag                         != op2.m_noBdofConstraintFlag                           ) return false;
  if( op1.m_noDmvrConstraintFlag                         != op2.m_noDmvrConstraintFlag                           ) return false;
  if( op1.m_noCclmConstraintFlag                         != op2.m_noCclmConstraintFlag                           ) return false;
  if( op1.m_noMtsConstraintFlag                          != op2.m_noMtsConstraintFlag                            ) return false;
  if( op1.m_noSbtConstraintFlag                          != op2.m_noSbtConstraintFlag                            ) return false;
  if( op1.m_noAffineMotionConstraintFlag                 != op2.m_noAffineMotionConstraintFlag                   ) return false;
  if( op1.m_noBcwConstraintFlag                          != op2.m_noBcwConstraintFlag                            ) return false;
  if( op1.m_noIbcConstraintFlag                          != op2.m_noIbcConstraintFlag                            ) return false;
  if( op1.m_noCiipConstraintFlag                         != op2.m_noCiipConstraintFlag                           ) return false;
  if( op1.m_noLadfConstraintFlag                         != op2.m_noLadfConstraintFlag                           ) return false;
  if( op1.m_noTransformSkipConstraintFlag                != op2.m_noTransformSkipConstraintFlag                  ) return false;
  if( op1.m_noBDPCMConstraintFlag                        != op2.m_noBDPCMConstraintFlag                          ) return false;
  if( op1.m_noJointCbCrConstraintFlag                    != op2.m_noJointCbCrConstraintFlag                      ) return false;
  if( op1.m_noQpDeltaConstraintFlag                      != op2.m_noQpDeltaConstraintFlag                        ) return false;
  if( op1.m_noDepQuantConstraintFlag                     != op2.m_noDepQuantConstraintFlag                       ) return false;
  if( op1.m_noSignDataHidingConstraintFlag               != op2.m_noSignDataHidingConstraintFlag                 ) return false;
  if( op1.m_noTrailConstraintFlag                        != op2.m_noTrailConstraintFlag                          ) return false;
  if( op1.m_noStsaConstraintFlag                         != op2.m_noStsaConstraintFlag                           ) return false;
  if( op1.m_noRaslConstraintFlag                         != op2.m_noRaslConstraintFlag                           ) return false;
  if( op1.m_noRadlConstraintFlag                         != op2.m_noRadlConstraintFlag                           ) return false;
  if( op1.m_noIdrConstraintFlag                          != op2.m_noIdrConstraintFlag                            ) return false;
  if( op1.m_noCraConstraintFlag                          != op2.m_noCraConstraintFlag                            ) return false;
  if( op1.m_noGdrConstraintFlag                          != op2.m_noGdrConstraintFlag                            ) return false;
  if( op1.m_noApsConstraintFlag                          != op2.m_noApsConstraintFlag                            ) return false;
  return true;
}
bool             operator != (const ConstraintInfo& op1, const ConstraintInfo& op2)
{
  return !(op1 == op2);
}

bool             operator == (const ProfileTierLevel& op1, const ProfileTierLevel& op2)
{
  if (op1.m_tierFlag        != op2.m_tierFlag) return false;
  if (op1.m_profileIdc      != op2.m_profileIdc) return false;
  if (op1.m_numSubProfile   != op2.m_numSubProfile) return false;
  if (op1.m_levelIdc        != op2.m_levelIdc) return false;
  if (op1.m_frameOnlyConstraintFlag != op2.m_frameOnlyConstraintFlag) return false;
  if (op1.m_multiLayerEnabledFlag   != op2.m_multiLayerEnabledFlag) return false;
  if (op1.m_constraintInfo  != op2.m_constraintInfo) return false;
  if (op1.m_subProfileIdc   != op2.m_subProfileIdc) return false;

  for (int i = 0; i < MAX_TLAYER - 1; i++)
  {
    if (op1.m_subLayerLevelPresentFlag[i] != op2.m_subLayerLevelPresentFlag[i])
    {
      return false;
    }
  }
  for (int i = 0; i < MAX_TLAYER; i++)
  {
    if (op1.m_subLayerLevelIdc[i] != op2.m_subLayerLevelIdc[i])
    {
      return false;
    }
  }
  return true;
}
bool             operator != (const ProfileTierLevel& op1, const ProfileTierLevel& op2)
{
  return !(op1 == op2);
}

uint32_t
LevelTierFeatures::getMaxPicWidthInLumaSamples()  const
{
  return uint32_t(sqrt(maxLumaPs*8.0));
}

uint32_t
LevelTierFeatures::getMaxPicHeightInLumaSamples() const
{
  return uint32_t(sqrt(maxLumaPs*8.0));
}

static const uint64_t MAX_CNFUINT64 = std::numeric_limits<uint64_t>::max();

static const LevelTierFeatures mainLevelTierInfo[] =
{
      //  level,       maxlumaps,      maxcpb[tier],,  maxSlicesPerAu,maxTilesPerAu,cols, maxLumaSr,       maxBr[tier],,    minCr[tier],,
    { vvdecLevel::VVDEC_LEVEL1  ,    36864, {      350,        0 },       16,        1,        1,     552960ULL, {     128,        0 }, { 2, 2} },
    { vvdecLevel::VVDEC_LEVEL2  ,   122880, {     1500,        0 },       16,        1,        1,    3686400ULL, {    1500,        0 }, { 2, 2} },
    { vvdecLevel::VVDEC_LEVEL2_1,   245760, {     3000,        0 },       20,        1,        1,    7372800ULL, {    3000,        0 }, { 2, 2} },
    { vvdecLevel::VVDEC_LEVEL3  ,   552960, {     6000,        0 },       30,        4,        2,   16588800ULL, {    6000,        0 }, { 2, 2} },
    { vvdecLevel::VVDEC_LEVEL3_1,   983040, {    10000,        0 },       40,        9,        3,   33177600ULL, {   10000,        0 }, { 2, 2} },
    { vvdecLevel::VVDEC_LEVEL4  ,  2228224, {    12000,    30000 },       75,       25,        5,   66846720ULL, {   12000,    30000 }, { 4, 4} },
    { vvdecLevel::VVDEC_LEVEL4_1,  2228224, {    20000,    50000 },       75,       25,        5,  133693440ULL, {   20000,    50000 }, { 4, 4} },
    { vvdecLevel::VVDEC_LEVEL5  ,  8912896, {    25000,   100000 },      200,      110,       10,  267386880ULL, {   25000,   100000 }, { 6, 4} },
    { vvdecLevel::VVDEC_LEVEL5_1,  8912896, {    40000,   160000 },      200,      110,       10,  534773760ULL, {   40000,   160000 }, { 8, 4} },
    { vvdecLevel::VVDEC_LEVEL5_2,  8912896, {    60000,   240000 },      200,      110,       10, 1069547520ULL, {   60000,   240000 }, { 8, 4} },
    { vvdecLevel::VVDEC_LEVEL6  , 35651584, {    80000,   240000 },      600,      440,       20, 1069547520ULL, {   60000,   240000 }, { 8, 4} },
    { vvdecLevel::VVDEC_LEVEL6_1, 35651584, {   120000,   480000 },      600,      440,       20, 2139095040ULL, {  120000,   480000 }, { 8, 4} },
    { vvdecLevel::VVDEC_LEVEL6_2, 35651584, {   180000,   800000 },      600,      440,       20, 4278190080ULL, {  240000,   800000 }, { 8, 4} },
    { vvdecLevel::VVDEC_LEVEL15_5, MAX_UINT,{ MAX_UINT, MAX_UINT }, MAX_UINT, MAX_UINT, MAX_UINT, MAX_CNFUINT64, {MAX_UINT, MAX_UINT }, { 0, 0} },
    { vvdecLevel::VVDEC_LEVEL_NONE    }
};

static const ProfileFeatures validProfiles[] = {
// profile, pNameString, maxBitDepth, maxChrFmt, lvl15.5, cpbvcl, cpbnal, fcf*1000, mincr*100, levelInfo
// most constrained profiles must appear first.
  { Profile::MAIN_10_STILL_PICTURE, "Main_10_Still_Picture", 10, CHROMA_420, true, 1000, 1100, 1875, 100,
    mainLevelTierInfo, true },
  { Profile::MULTILAYER_MAIN_10_STILL_PICTURE, "Multilayer_Main_10_Still_Picture", 10, CHROMA_420, true, 1000, 1100,
    1875, 100, mainLevelTierInfo, true },
  { Profile::MAIN_10_444_STILL_PICTURE, "Main_444_10_Still_Picture", 10, CHROMA_444, true, 2500, 2750, 3750, 75,
    mainLevelTierInfo, true },
  { Profile::MULTILAYER_MAIN_10_444_STILL_PICTURE, "Multilayer_Main_444_10_Still_Picture", 10, CHROMA_444, true, 2500,
    2750, 3750, 75, mainLevelTierInfo, true },
  { Profile::MAIN_10, "Main_10", 10, CHROMA_420, false, 1000, 1100, 1875, 100, mainLevelTierInfo, false },
  { Profile::MULTILAYER_MAIN_10, "Multilayer_Main_10", 10, CHROMA_420, false, 1000, 1100, 1875, 100, mainLevelTierInfo,
    false },
  { Profile::MAIN_10_444, "Main_444_10", 10, CHROMA_444, false, 2500, 2750, 3750, 75, mainLevelTierInfo, false },
  { Profile::MULTILAYER_MAIN_10_444, "Multilayer_Main_444_10", 10, CHROMA_444, false, 2500, 2750, 3750, 75,
    mainLevelTierInfo, false },
  { Profile::NONE, 0 },
};

const ProfileFeatures *ProfileFeatures::getProfileFeatures(const Profile::Name p)
{
  int i;
  for (i = 0; validProfiles[i].profile != Profile::NONE; i++)
  {
    if (validProfiles[i].profile == p)
    {
      return &validProfiles[i];
    }
  }

  return &validProfiles[i];
}

void
ProfileLevelTierFeatures::extractPTLInformation(const SPS &sps)
{
  const ProfileTierLevel &spsPtl =*(sps.getProfileTierLevel());

  m_tier = spsPtl.getTierFlag();

  // Identify the profile from the profile Idc, and possibly other constraints.
  for(int32_t i=0; validProfiles[i].profile != Profile::NONE; i++)
  {
    if (spsPtl.getProfileIdc() == validProfiles[i].profile)
    {
      m_pProfile = &(validProfiles[i]);
      break;
    }
  }

  if (m_pProfile != 0)
  {
    // Now identify the level:
    const LevelTierFeatures *pLTF  = m_pProfile->pLevelTiersListInfo;
    const vvdecLevel spsLevelName  = spsPtl.getLevelIdc();
    if (spsLevelName!=vvdecLevel::VVDEC_LEVEL15_5 || m_pProfile->canUseLevel15p5)
    {
      for(int i=0; pLTF[i].level!=vvdecLevel::VVDEC_LEVEL_NONE; i++)
      {
        if (pLTF[i].level == spsLevelName)
        {
          m_pLevelTier = &(pLTF[i]);
        }
      }
    }
  }
}

uint64_t ProfileLevelTierFeatures::getCpbSizeInBits() const
{
  return (m_pLevelTier!=0 && m_pProfile!=0) ? uint64_t(m_pProfile->cpbVclFactor) * m_pLevelTier->maxCpb[m_tier?1:0] : uint64_t(0);
}

uint32_t ProfileLevelTierFeatures::getMaxDpbSize( uint32_t picSizeMaxInSamplesY ) const
{
  const uint32_t maxDpbPicBuf = 8;
  uint32_t       maxDpbSize;

  if (m_pLevelTier->level == vvdecLevel::VVDEC_LEVEL15_5)
  {
    // maxDpbSize is unconstrained in this case
    maxDpbSize = std::numeric_limits<uint32_t>::max();
  }
  else if (2 * picSizeMaxInSamplesY <= m_pLevelTier->maxLumaPs)
  {
    maxDpbSize = 2 * maxDpbPicBuf;
  }
  else if (3 * picSizeMaxInSamplesY <= 2 * m_pLevelTier->maxLumaPs)
  {
    maxDpbSize = 3 * maxDpbPicBuf / 2;
  }
  else
  {
    maxDpbSize = maxDpbPicBuf;
  }

  return maxDpbSize;
}

#if ENABLE_TRACING
void xTraceVPSHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Video Parameter Set     ===========\n" );
}
void xTraceDCIHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== DCI     ===========\n" );
}
void xTraceSPSHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Sequence Parameter Set  ===========\n" );
}

void xTracePPSHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Picture Parameter Set  ===========\n" );
}

void xTraceAPSHeader()
{
  DTRACE(g_trace_ctx, D_HEADER, "=========== Adaptation Parameter Set  ===========\n");
}

void xTracePictureHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Picture Header ===========\n" );
}

void xTraceSliceHeader()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Slice ===========\n" );
}

void xTraceAccessUnitDelimiter()
{
  DTRACE( g_trace_ctx, D_HEADER, "=========== Access Unit Delimiter ===========\n" );
}
#endif

}

Coverage Report

Created: 2026-04-01 07:49