EncLib.cpp

      if (!rpl->isRefPicLongterm(jj) && isFirstEntry)
      {
        lastSign = (rpl->getRefPicIdentifier(jj) >= 0) ? true : false;
        isFirstEntry = false;
      }
      else if (!rpl->isRefPicLongterm(jj) && (((rpl->getRefPicIdentifier(jj) - rpl->getRefPicIdentifier(jj - 1)) >= 0 && lastSign == false) || ((rpl->getRefPicIdentifier(jj) - rpl->getRefPicIdentifier(jj - 1)) < 0 && lastSign == true)))
      {
        isAllEntriesinRPLHasSameSignFlag = false;
      }
    }
  }
  //Check RPLL1. Skip it if it is already found out that this flag is not true for RPL0 or if RPL1 is the same as RPL0
  numberOfRPL = sps.getNumRPL1();
  isFirstEntry = true;
  lastSign = true;
  for (uint32_t ii = 0; isAllEntriesinRPLHasSameSignFlag && !sps.getRPL1CopyFromRPL0Flag() && ii < numberOfRPL; ii++)
  {
    isFirstEntry = true;
    const ReferencePictureList* rpl = rplList1->getReferencePictureList(ii);
    for (uint32_t jj = 0; isAllEntriesinRPLHasSameSignFlag && jj < rpl->getNumberOfActivePictures(); jj++)
    {
      if (!rpl->isRefPicLongterm(jj) && isFirstEntry)
      {
        lastSign = (rpl->getRefPicIdentifier(jj) >= 0) ? true : false;
        isFirstEntry = false;
      }
      else if (!rpl->isRefPicLongterm(jj) && (((rpl->getRefPicIdentifier(jj) - rpl->getRefPicIdentifier(jj - 1)) >= 0 && lastSign == false) || ((rpl->getRefPicIdentifier(jj) - rpl->getRefPicIdentifier(jj - 1)) < 0 && lastSign == true)))
      {
        isAllEntriesinRPLHasSameSignFlag = false;
      }
    }
  }
  sps.setAllActiveRplEntriesHasSameSignFlag(isAllEntriesinRPLHasSameSignFlag);
}

void EncLib::getActiveRefPicListNumForPOC(const SPS *sps, int POCCurr, int GOPid, uint32_t *activeL0, uint32_t *activeL1)
{
  if (m_uiIntraPeriod < 0)  //Only for RA
  {
    *activeL0 = *activeL1 = 0;
    return;
  }
  uint32_t rpl0Idx = GOPid;
  uint32_t rpl1Idx = GOPid;

  int fullListNum = m_iGOPSize;
  int partialListNum = getRPLCandidateSize(0) - m_iGOPSize;
  int extraNum = fullListNum;
  if (m_uiIntraPeriod < 0)
  {
#if JVET_P0345_LD_GOP_8
    if (POCCurr < (2 * m_iGOPSize + 2))
#else
    if (POCCurr < 10)
#endif
    {
      rpl0Idx = POCCurr + m_iGOPSize - 1;
      rpl1Idx = POCCurr + m_iGOPSize - 1;
    }
    else
    {
      rpl0Idx = (POCCurr%m_iGOPSize == 0) ? m_iGOPSize - 1 : POCCurr%m_iGOPSize - 1;
      rpl1Idx = (POCCurr%m_iGOPSize == 0) ? m_iGOPSize - 1 : POCCurr%m_iGOPSize - 1;
    }
    extraNum = fullListNum + partialListNum;
  }
  for (; extraNum<fullListNum + partialListNum; extraNum++)
  {
    if (m_uiIntraPeriod > 0 && getDecodingRefreshType() > 0)
    {
      int POCIndex = POCCurr%m_uiIntraPeriod;
      if (POCIndex == 0)
        POCIndex = m_uiIntraPeriod;
      if (POCIndex == m_RPLList0[extraNum].m_POC)
      {
        rpl0Idx = extraNum;
        rpl1Idx = extraNum;
        extraNum++;
      }
    }
  }

  const ReferencePictureList *rpl0 = sps->getRPLList0()->getReferencePictureList(rpl0Idx);
  *activeL0 = rpl0->getNumberOfActivePictures();
  const ReferencePictureList *rpl1 = sps->getRPLList1()->getReferencePictureList(rpl1Idx);
  *activeL1 = rpl1->getNumberOfActivePictures();
}

void EncLib::selectReferencePictureList(Slice* slice, int POCCurr, int GOPid, int ltPoc)
{
  bool isEncodeLtRef = (POCCurr == ltPoc);
  if (m_compositeRefEnabled && isEncodeLtRef)
  {
    POCCurr++;
  }

  slice->setRPL0idx(GOPid);
  slice->setRPL1idx(GOPid);

  int fullListNum = m_iGOPSize;
  int partialListNum = getRPLCandidateSize(0) - m_iGOPSize;
  int extraNum = fullListNum;
  if (m_uiIntraPeriod < 0)
  {
#if JVET_P0345_LD_GOP_8
    if (POCCurr < (2 * m_iGOPSize + 2))
#else
    if (POCCurr < 10)
#endif
    {
      slice->setRPL0idx(POCCurr + m_iGOPSize - 1);
      slice->setRPL1idx(POCCurr + m_iGOPSize - 1);
    }
    else
    {
      slice->setRPL0idx((POCCurr%m_iGOPSize == 0) ? m_iGOPSize - 1 : POCCurr%m_iGOPSize - 1);
      slice->setRPL1idx((POCCurr%m_iGOPSize == 0) ? m_iGOPSize - 1 : POCCurr%m_iGOPSize - 1);
    }
    extraNum = fullListNum + partialListNum;
  }
  for (; extraNum < fullListNum + partialListNum; extraNum++)
  {
    if (m_uiIntraPeriod > 0 && getDecodingRefreshType() > 0)
    {
      int POCIndex = POCCurr%m_uiIntraPeriod;
      if (POCIndex == 0)
        POCIndex = m_uiIntraPeriod;
      if (POCIndex == m_RPLList0[extraNum].m_POC)
      {
        slice->setRPL0idx(extraNum);
        slice->setRPL1idx(extraNum);
        extraNum++;
      }
    }
  }

  const ReferencePictureList *rpl0 = (slice->getSPS()->getRPLList0()->getReferencePictureList(slice->getRPL0idx()));
  const ReferencePictureList *rpl1 = (slice->getSPS()->getRPLList1()->getReferencePictureList(slice->getRPL1idx()));
  slice->setRPL0(rpl0);
  slice->setRPL1(rpl1);
}

void  EncLib::xInitPPSforTiles(PPS &pps)
{
  if ( (m_iNumColumnsMinus1==0) && (m_iNumRowsMinus1==0) )
  {
    // one, no bricks
    pps.setSingleTileInPicFlag(true);
    pps.setSingleBrickPerSliceFlag(true);
    pps.setRectSliceFlag(true);
  }
  else
  {
    pps.setSingleTileInPicFlag(false);
    pps.setSingleBrickPerSliceFlag( m_sliceMode==SINGLE_BRICK_PER_SLICE );
    pps.setRectSliceFlag( m_sliceMode==SINGLE_BRICK_PER_SLICE );
    if (m_rectSliceFlag)
      pps.setRectSliceFlag(m_rectSliceFlag);
  }
  pps.setUniformTileSpacingFlag( m_tileUniformSpacingFlag );
  pps.setNumTileColumnsMinus1( m_iNumColumnsMinus1 );
  pps.setNumTileRowsMinus1( m_iNumRowsMinus1 );
  if( !m_tileUniformSpacingFlag )
  {
    pps.setTileColumnWidth( m_tileColumnWidth );
    pps.setTileRowHeight( m_tileRowHeight );
  }
  else
  {
    pps.setTileColsWidthMinus1(m_uniformTileColsWidthMinus1);
    pps.setTileRowsHeightMinus1(m_uniformTileRowHeightMinus1);
  }
  pps.setLoopFilterAcrossBricksEnabledFlag( m_loopFilterAcrossBricksEnabledFlag );

  //pps.setRectSliceFlag( m_rectSliceFlag );
  pps.setNumSlicesInPicMinus1( m_numSlicesInPicMinus1 );
  pps.setTopLeftBrickIdx(m_topLeftBrickIdx);
  pps.setBottomRightBrickIdx(m_bottomRightBrickIdx);
  if (m_numSlicesInPicMinus1 > 0)
  {
    std::vector<int> bottomrightdelta(m_numSlicesInPicMinus1 + 1);
    for (int i = 0; i < m_numSlicesInPicMinus1 + 1; i++)
    {
      bottomrightdelta[i] = (i == 0) ? m_bottomRightBrickIdx[i] : m_bottomRightBrickIdx[i] - m_bottomRightBrickIdx[i - 1];
    }
    pps.setBottomRightBrickIdxDelta(bottomrightdelta);
  }

  pps.setLoopFilterAcrossBricksEnabledFlag( m_loopFilterAcrossBricksEnabledFlag );
  pps.setLoopFilterAcrossSlicesEnabledFlag( m_loopFilterAcrossSlicesEnabledFlag );
  pps.setSignalledSliceIdFlag( m_signalledSliceIdFlag );
  pps.setSignalledSliceIdLengthMinus1( m_signalledSliceIdLengthMinus1 );
  pps.setSignalledSliceIdFlag( m_signalledSliceIdFlag );
  pps.setSignalledSliceIdLengthMinus1( m_signalledSliceIdLengthMinus1 );
  pps.setSliceId( m_sliceId );

  int numTiles= (m_iNumColumnsMinus1 + 1) * (m_iNumRowsMinus1 + 1);
  pps.setNumTilesInPic(numTiles);
  std::vector<int> tileHeight(numTiles);

  if (m_brickSplitMap.empty())
  {
    pps.setBrickSplittingPresentFlag(false);
  }
  else
  {
    pps.setBrickSplittingPresentFlag(true);

    std::vector<bool> brickSplitFlag (numTiles, false);
    std::vector<bool> uniformBrickSpacingFlag (numTiles, false);
    std::vector<int>  brickHeightMinus1 (numTiles, 0);
    std::vector<int> numBrickRowsMinus2(numTiles, 0);
    std::vector<std::vector<int>>  brickRowHeightMinus1 (numTiles);

    for (auto &brickSplit: m_brickSplitMap)
    {
      int tileIdx = brickSplit.first;
      CHECK ( tileIdx >= numTiles, "Brick split specified for undefined tile");

      brickSplitFlag[tileIdx]           = true;
      uniformBrickSpacingFlag [tileIdx] = brickSplit.second.m_uniformSplit;
      if (uniformBrickSpacingFlag [tileIdx])
      {
        brickHeightMinus1[tileIdx]=brickSplit.second.m_uniformHeight - 1;
      }
      else
      {
        numBrickRowsMinus2[tileIdx] = brickSplit.second.m_numSplits - 1;
        brickRowHeightMinus1[tileIdx].resize(brickSplit.second.m_numSplits);
        for (int i=0; i<brickSplit.second.m_numSplits; i++)
        {
          brickRowHeightMinus1[tileIdx][i]=brickSplit.second.m_brickHeight[i] - 1;
        }
      }
    }
    pps.setBrickSplitFlag(brickSplitFlag);
    pps.setUniformBrickSpacingFlag(uniformBrickSpacingFlag);
    pps.setBrickHeightMinus1(brickHeightMinus1);
    pps.setNumBrickRowsMinus2(numBrickRowsMinus2);
    pps.setBrickRowHeightMinus1(brickRowHeightMinus1);

    // check brick dimensions
    std::vector<uint32_t> tileRowHeight (m_iNumRowsMinus1+1);
    int picHeightInCtus = (getSourceHeight() + m_maxCUHeight - 1) / m_maxCUHeight;

    // calculate all tile row heights
    if( pps.getUniformTileSpacingFlag() )
    {
      //set width and height for each (uniform) tile
      for(int row=0; row < m_iNumRowsMinus1 + 1; row++)
      {
        tileRowHeight[row] = (row+1)*picHeightInCtus/(m_iNumRowsMinus1+1)   - (row*picHeightInCtus)/(m_iNumRowsMinus1 + 1);
      }
    }
    else
    {
      tileRowHeight[ m_iNumRowsMinus1 ] = picHeightInCtus;
      for( int j = 0; j < m_iNumRowsMinus1; j++ )
      {
        tileRowHeight[ j ] = pps.getTileRowHeight( j );
        tileRowHeight[ m_iNumRowsMinus1 ]  =  tileRowHeight[ m_iNumRowsMinus1 ] - pps.getTileRowHeight( j );
      }
    }

    // check brick splits for each tile
    for (int tileIdx=0; tileIdx < numTiles; tileIdx++)
    {
      const int tileY = tileIdx / (m_iNumColumnsMinus1 + 1);

      tileHeight[tileIdx] = tileRowHeight[tileY];

      if (tileHeight[tileIdx] <= 1)
      {
        CHECK(pps.getBrickSplitFlag(tileIdx) != 0, "The value of brick_split_flag[ i ] shall be 0 if tileHeight <= 1");
      }
      if (pps.getBrickSplitFlag(tileIdx))
      {
        if (tileHeight[tileIdx] <= 2)
        {
          CHECK(pps.getUniformBrickSpacingFlag(tileIdx) != 1, "The value of uniform_brick_spacing_flag[ i ] shall be 1 if tileHeight <= 2");
        }
        if (pps.getUniformBrickSpacingFlag(tileIdx))
        {
          CHECK((pps.getBrickHeightMinus1(tileIdx) + 1) >= tileHeight[tileIdx], "Brick height larger than or equal to tile height");
        }
        else
        {
          int cumulativeHeight=0;
          for (int i = 0; i <= pps.getNumBrickRowsMinus2(tileIdx); i++)
          {
            cumulativeHeight += pps.getBrickRowHeightMinus1(tileIdx, i) + 1;
          }
          CHECK(cumulativeHeight >= tileHeight[tileIdx], "Cumulative brick height larger than or equal to tile height");
        }
      }
    }
  }
  pps.setTileHeight(tileHeight);
}

void  EncCfg::xCheckGSParameters()
{
  int   iWidthInCU = ( m_iSourceWidth%m_maxCUWidth ) ? m_iSourceWidth/m_maxCUWidth + 1 : m_iSourceWidth/m_maxCUWidth;
  int   iHeightInCU = ( m_iSourceHeight%m_maxCUHeight ) ? m_iSourceHeight/m_maxCUHeight + 1 : m_iSourceHeight/m_maxCUHeight;
  uint32_t  uiCummulativeColumnWidth = 0;
  uint32_t  uiCummulativeRowHeight = 0;

  if (m_tileUniformSpacingFlag && m_uniformTileColsWidthMinus1 == -1)
  {
    EXIT("Uniform tiles specified with unspecified or invalid UniformTileColsWidthMinus1 value");
  }
  if (m_tileUniformSpacingFlag && m_uniformTileRowHeightMinus1 == -1)
  {
    EXIT("Uniform tiles specified with unspecified or invalid UniformTileRowHeightMinus1 value");
  }
  if (m_tileUniformSpacingFlag && m_uniformTileColsWidthMinus1 >= iWidthInCU)
  {
    EXIT("UniformTileColsWidthMinus1 too large");
  }
  if (m_tileUniformSpacingFlag && m_uniformTileRowHeightMinus1 >= iHeightInCU)
  {
    EXIT("UniformTileRowHeightMinus1 too large");
  }

  //check the column relative parameters
  if( m_iNumColumnsMinus1 >= (1<<(LOG2_MAX_NUM_COLUMNS_MINUS1+1)) )
  {
    EXIT( "The number of columns is larger than the maximum allowed number of columns." );
  }

  if( m_iNumColumnsMinus1 >= iWidthInCU )
  {
    EXIT( "The current picture can not have so many columns." );
  }

  if( m_iNumColumnsMinus1 && !m_tileUniformSpacingFlag )
  {
    for(int i=0; i<m_iNumColumnsMinus1; i++)
    {
      uiCummulativeColumnWidth += m_tileColumnWidth[i];
    }

    if( uiCummulativeColumnWidth >= iWidthInCU )
    {
      EXIT( "The width of the column is too large." );
    }
  }

  //check the row relative parameters
  if( m_iNumRowsMinus1 >= (1<<(LOG2_MAX_NUM_ROWS_MINUS1+1)) )
  {
    EXIT( "The number of rows is larger than the maximum allowed number of rows." );
  }

  if( m_iNumRowsMinus1 >= iHeightInCU )
  {
    EXIT( "The current picture can not have so many rows." );
  }

  if( m_iNumRowsMinus1 && !m_tileUniformSpacingFlag )
  {
    for(int i=0; i<m_iNumRowsMinus1; i++)
    {
      uiCummulativeRowHeight += m_tileRowHeight[i];
    }

    if( uiCummulativeRowHeight >= iHeightInCU )
    {
      EXIT( "The height of the row is too large." );
    }
  }
}

void EncLib::setParamSetChanged(int spsId, int ppsId)
{
  m_ppsMap.setChangedFlag(ppsId);
  m_spsMap.setChangedFlag(spsId);
}
bool EncLib::APSNeedsWriting(int apsId)
{
  bool isChanged = m_apsMap.getChangedFlag(apsId);
  m_apsMap.clearChangedFlag(apsId);
  return isChanged;
}

bool EncLib::PPSNeedsWriting(int ppsId)
{
  bool bChanged=m_ppsMap.getChangedFlag(ppsId);
  m_ppsMap.clearChangedFlag(ppsId);
  return bChanged;
}

bool EncLib::SPSNeedsWriting(int spsId)
{
  bool bChanged=m_spsMap.getChangedFlag(spsId);
  m_spsMap.clearChangedFlag(spsId);
  return bChanged;
}

void EncLib::checkPltStats( Picture* pic )
{
  int totalArea = 0;
  int pltArea = 0;
  for (auto apu : pic->cs->pus)
  {
    for (int i = 0; i < MAX_NUM_TBLOCKS; ++i)
    {
      int puArea = apu->blocks[i].width * apu->blocks[i].height;
      if (apu->blocks[i].width > 0 && apu->blocks[i].height > 0)
      {
        totalArea += puArea;
        if (CU::isPLT(*apu->cu) || CU::isIBC(*apu->cu))
        {
          pltArea += puArea;
        }
        break;
      }

    }
  }
  if (pltArea * PLT_FAST_RATIO < totalArea)
  {
    m_doPlt = false;
  }
  else
  {
    m_doPlt = true;
  }
}

#if X0038_LAMBDA_FROM_QP_CAPABILITY
int EncCfg::getQPForPicture(const uint32_t gopIndex, const Slice *pSlice) const
{
  const int lumaQpBDOffset = pSlice->getSPS()->getQpBDOffset(CHANNEL_TYPE_LUMA);
  int qp;

  if (getCostMode()==COST_LOSSLESS_CODING)
  {
#if JVET_AHG14_LOSSLESS
    qp = LOSSLESS_AND_MIXED_LOSSLESS_RD_COST_TEST_QP - ( ( pSlice->getSPS()->getBitDepth( CHANNEL_TYPE_LUMA ) - 8 ) * 6 );
#else
    qp=LOSSLESS_AND_MIXED_LOSSLESS_RD_COST_TEST_QP;
#endif
  }
  else
  {
    const SliceType sliceType=pSlice->getSliceType();

    qp = getBaseQP();

    // switch at specific qp and keep this qp offset
    static int appliedSwitchDQQ = 0; /* TODO: MT */
    if( pSlice->getPOC() == getSwitchPOC() )
    {
      appliedSwitchDQQ = getSwitchDQP();
    }
    qp += appliedSwitchDQQ;

#if QP_SWITCHING_FOR_PARALLEL
    const int* pdQPs = getdQPs();
    if ( pdQPs )
    {
      qp += pdQPs[pSlice->getPOC() / (m_compositeRefEnabled ? 2 : 1)];
    }
#endif

    if(sliceType==I_SLICE)
    {
      qp += getIntraQPOffset();
    }
    else
    {
#if SHARP_LUMA_DELTA_QP
      // Only adjust QP when not lossless
      if (!(( getMaxDeltaQP() == 0 ) && (!getLumaLevelToDeltaQPMapping().isEnabled()) && (qp == -lumaQpBDOffset ) && (pSlice->getPPS()->getTransquantBypassEnabledFlag())))
#else
      if (!(( getMaxDeltaQP() == 0 ) && (qp == -lumaQpBDOffset ) && (pSlice->getPPS()->getTransquantBypassEnabledFlag())))
#endif

      {
        const GOPEntry &gopEntry=getGOPEntry(gopIndex);
        // adjust QP according to the QP offset for the GOP entry.
        qp +=gopEntry.m_QPOffset;

        // adjust QP according to QPOffsetModel for the GOP entry.
        double dqpOffset=qp*gopEntry.m_QPOffsetModelScale+gopEntry.m_QPOffsetModelOffset+0.5;
        int qpOffset = (int)floor(Clip3<double>(0.0, 3.0, dqpOffset));
        qp += qpOffset ;
      }
    }

#if !QP_SWITCHING_FOR_PARALLEL
    // modify QP if a fractional QP was originally specified, cause dQPs to be 0 or 1.
    const int* pdQPs = getdQPs();
    if ( pdQPs )
    {
      qp += pdQPs[ pSlice->getPOC() ];
    }
#endif
  }
  qp = Clip3( -lumaQpBDOffset, MAX_QP, qp );
  return qp;
}
#endif


//! \}