Slice.cpp 84.5 KB
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/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
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 * Copyright (c) 2010-2019, ITU/ISO/IEC
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 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/** \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"

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#include "UnitTools.h"
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//! \ingroup CommonLib
//! \{

Slice::Slice()
: m_iPPSId                        ( -1 )
, m_PicOutputFlag                 ( true )
, m_iPOC                          ( 0 )
, m_iLastIDR                      ( 0 )
, m_iAssociatedIRAP               ( 0 )
, m_iAssociatedIRAPType           ( NAL_UNIT_INVALID )
, m_pRPS                          ( 0 )
, m_localRPS                      ( )
, m_rpsIdx                        ( 0 )
, m_RefPicListModification        ( )
, m_eNalUnitType                  ( NAL_UNIT_CODED_SLICE_IDR_W_RADL )
, m_eSliceType                    ( I_SLICE )
, m_iSliceQp                      ( 0 )
#if HEVC_DEPENDENT_SLICES
, m_dependentSliceSegmentFlag     ( false )
#endif
, m_ChromaQpAdjEnabled            ( false )
, m_deblockingFilterDisable       ( false )
, m_deblockingFilterOverrideFlag  ( false )
, m_deblockingFilterBetaOffsetDiv2( 0 )
, m_deblockingFilterTcOffsetDiv2  ( 0 )
, m_pendingRasInit                ( false )
, m_depQuantEnabledFlag           ( false )
#if HEVC_USE_SIGN_HIDING
, m_signDataHidingEnabledFlag     ( false )
#endif
, m_bCheckLDC                     ( false )
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#if JVET_M0444_SMVD
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, m_biDirPred                    ( false )
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#endif
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, m_iSliceQpDelta                 ( 0 )
, m_iDepth                        ( 0 )
#if HEVC_VPS
, m_pcVPS                         ( NULL )
#endif
, m_pcSPS                         ( NULL )
, m_pcPPS                         ( NULL )
, m_pcPic                         ( NULL )
, m_colFromL0Flag                 ( true )
, m_noOutputPriorPicsFlag         ( false )
, m_noRaslOutputFlag              ( false )
, m_handleCraAsBlaFlag            ( false )
, m_colRefIdx                     ( 0 )
, m_maxNumMergeCand               ( 0 )
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, m_maxNumAffineMergeCand         ( 0 )
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#if JVET_M0255_FRACMMVD_SWITCH
, m_disFracMMVD                   ( false )
#endif
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, m_uiTLayer                      ( 0 )
, m_bTLayerSwitchingFlag          ( false )
, m_sliceMode                     ( NO_SLICES )
, m_sliceArgument                 ( 0 )
, m_sliceCurStartCtuTsAddr        ( 0 )
, m_sliceCurEndCtuTsAddr          ( 0 )
, m_independentSliceIdx           ( 0 )
#if HEVC_DEPENDENT_SLICES
, m_sliceSegmentIdx               ( 0 )
, m_sliceSegmentMode              ( NO_SLICES )
, m_sliceSegmentArgument          ( 0 )
, m_sliceSegmentCurStartCtuTsAddr ( 0 )
, m_sliceSegmentCurEndCtuTsAddr   ( 0 )
#endif
, m_nextSlice                     ( false )
#if HEVC_DEPENDENT_SLICES
, m_nextSliceSegment              ( false )
#endif
, m_sliceBits                     ( 0 )
#if HEVC_DEPENDENT_SLICES
, m_sliceSegmentBits              ( 0 )
#endif
, m_bFinalized                    ( false )
, m_bTestWeightPred               ( false )
, m_bTestWeightBiPred             ( false )
, m_substreamSizes                ( )
, m_cabacInitFlag                 ( false )
, m_bLMvdL1Zero                   ( false )
, m_temporalLayerNonReferenceFlag ( false )
, m_LFCrossSliceBoundaryFlag      ( false )
, m_enableTMVPFlag                ( true )
, m_encCABACTableIdx              (I_SLICE)
, m_iProcessingStartTime          ( 0 )
, m_dProcessingTime               ( 0 )
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, m_splitConsOverrideFlag         ( false )
, m_uiMinQTSize                   ( 0 )
, m_uiMaxBTDepth                  ( 0 )
, m_uiMaxTTSize                   ( 0 )
, m_uiMinQTSizeIChroma            ( 0 )
, m_uiMaxBTDepthIChroma           ( 0 )
, m_uiMaxBTSizeIChroma            ( 0 )
, m_uiMaxTTSizeIChroma            ( 0 )
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, m_uiMaxBTSize                   ( 0 )
{
  for(uint32_t i=0; i<NUM_REF_PIC_LIST_01; i++)
  {
    m_aiNumRefIdx[i] = 0;
  }

  for (uint32_t component = 0; component < MAX_NUM_COMPONENT; component++)
  {
    m_lambdas            [component] = 0.0;
    m_iSliceChromaQpDelta[component] = 0;
  }

  initEqualRef();

  for ( int idx = 0; idx < MAX_NUM_REF; idx++ )
  {
    m_list1IdxToList0Idx[idx] = -1;
  }

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

  resetWpScaling();
  initWpAcDcParam();

  for(int ch=0; ch < MAX_NUM_CHANNEL_TYPE; ch++)
  {
    m_saoEnabledFlag[ch] = false;
  }

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#if JVET_M0427_INLOOP_RESHAPER
  m_sliceReshapeInfo.setUseSliceReshaper(false);
  m_sliceReshapeInfo.setSliceReshapeModelPresentFlag(false);
  m_sliceReshapeInfo.setSliceReshapeChromaAdj(0);
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  m_sliceReshapeInfo.reshaperModelMinBinIdx = 0;
  m_sliceReshapeInfo.reshaperModelMaxBinIdx = PIC_CODE_CW_BINS - 1;
  memset(m_sliceReshapeInfo.reshaperModelBinCWDelta, 0, PIC_CODE_CW_BINS * sizeof(int));
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#endif
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}

Slice::~Slice()
{
}


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;
  initEqualRef();

  m_bCheckLDC = false;

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#if JVET_M0444_SMVD
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  m_biDirPred = false;
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  m_symRefIdx[0] = -1;
  m_symRefIdx[1] = -1;
#endif

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

  m_maxNumMergeCand = MRG_MAX_NUM_CANDS;
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  m_maxNumAffineMergeCand = AFFINE_MRG_MAX_NUM_CANDS;
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  m_bFinalized=false;

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#if JVET_M0255_FRACMMVD_SWITCH
  m_disFracMMVD          = false;
#endif
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  m_substreamSizes.clear();
  m_cabacInitFlag        = false;
  m_enableTMVPFlag       = true;
}

void Slice::setDefaultClpRng( const SPS& sps )
{
  m_clpRngs.comp[COMPONENT_Y].min = m_clpRngs.comp[COMPONENT_Cb].min  = m_clpRngs.comp[COMPONENT_Cr].min = 0;
  m_clpRngs.comp[COMPONENT_Y].max                                     = (1<< sps.getBitDepth(CHANNEL_TYPE_LUMA))-1;
  m_clpRngs.comp[COMPONENT_Y].bd  = sps.getBitDepth(CHANNEL_TYPE_LUMA);
  m_clpRngs.comp[COMPONENT_Y].n   = 0;
  m_clpRngs.comp[COMPONENT_Cb].max = m_clpRngs.comp[COMPONENT_Cr].max = (1<< sps.getBitDepth(CHANNEL_TYPE_CHROMA))-1;
  m_clpRngs.comp[COMPONENT_Cb].bd  = m_clpRngs.comp[COMPONENT_Cr].bd  = sps.getBitDepth(CHANNEL_TYPE_CHROMA);
  m_clpRngs.comp[COMPONENT_Cb].n   = m_clpRngs.comp[COMPONENT_Cr].n   = 0;
  m_clpRngs.used = m_clpRngs.chroma = false;
}


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_BLA_N_LP
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_LP
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA;
}


void  Slice::sortPicList        (PicList& rcListPic)
{
  Picture*    pcPicExtract;
  Picture*    pcPicInsert;

  PicList::iterator    iterPicExtract;
  PicList::iterator    iterPicExtract_1;
  PicList::iterator    iterPicInsert;

  for (int i = 1; i < (int)(rcListPic.size()); i++)
  {
    iterPicExtract = rcListPic.begin();
    for (int j = 0; j < i; j++)
    {
      iterPicExtract++;
    }
    pcPicExtract = *(iterPicExtract);

    iterPicInsert = rcListPic.begin();
    while (iterPicInsert != iterPicExtract)
    {
      pcPicInsert = *(iterPicInsert);
      if (pcPicInsert->getPOC() >= pcPicExtract->getPOC())
      {
        break;
      }

      iterPicInsert++;
    }

    iterPicExtract_1 = iterPicExtract;    iterPicExtract_1++;

    //  swap iterPicExtract and iterPicInsert, iterPicExtract = curr. / iterPicInsert = insertion position
    rcListPic.insert( iterPicInsert, iterPicExtract, iterPicExtract_1 );
    rcListPic.erase( iterPicExtract );
  }
}

Picture* Slice::xGetRefPic (PicList& rcListPic, int poc)
{
  PicList::iterator  iterPic = rcListPic.begin();
  Picture*           pcPic   = *(iterPic);

  while ( iterPic != rcListPic.end() )
  {
    if(pcPic->getPOC() == poc)
    {
      break;
    }
    iterPic++;
    pcPic = *(iterPic);
  }
  return  pcPic;
}


Picture* Slice::xGetLongTermRefPic( PicList& rcListPic, int poc, bool pocHasMsb)
{
  PicList::iterator  iterPic = rcListPic.begin();
  Picture*           pcPic   = *(iterPic);
  Picture*           pcStPic = pcPic;

  int pocCycle = 1 << getSPS()->getBitsForPOC();
  if (!pocHasMsb)
  {
    poc = poc & (pocCycle - 1);
  }

  while ( iterPic != rcListPic.end() )
  {
    pcPic = *(iterPic);
    if (pcPic && pcPic->getPOC()!=this->getPOC() && pcPic->referenced)
    {
      int picPoc = pcPic->getPOC();
      if (!pocHasMsb)
      {
        picPoc = picPoc & (pocCycle - 1);
      }

      if (poc == picPoc)
      {
        if(pcPic->longTerm)
        {
          return pcPic;
        }
        else
        {
          pcStPic = pcPic;
        }
        break;
      }
    }

    iterPic++;
  }

  return pcStPic;
}

void Slice::setRefPOCList       ()
{
  for (int iDir = 0; iDir < NUM_REF_PIC_LIST_01; iDir++)
  {
    for (int iNumRefIdx = 0; iNumRefIdx < m_aiNumRefIdx[iDir]; iNumRefIdx++)
    {
      m_aiRefPOCList[iDir][iNumRefIdx] = m_apcRefPicList[iDir][iNumRefIdx]->getPOC();
    }
  }

}

void Slice::setList1IdxToList0Idx()
{
  int idxL0, idxL1;
  for ( idxL1 = 0; idxL1 < getNumRefIdx( REF_PIC_LIST_1 ); idxL1++ )
  {
    m_list1IdxToList0Idx[idxL1] = -1;
    for ( idxL0 = 0; idxL0 < getNumRefIdx( REF_PIC_LIST_0 ); idxL0++ )
    {
      if ( m_apcRefPicList[REF_PIC_LIST_0][idxL0]->getPOC() == m_apcRefPicList[REF_PIC_LIST_1][idxL1]->getPOC() )
      {
        m_list1IdxToList0Idx[idxL1] = idxL0;
        break;
      }
    }
  }
}

void Slice::setRefPicList( PicList& rcListPic, bool checkNumPocTotalCurr, bool bCopyL0toL1ErrorCase )
{
  if ( m_eSliceType == I_SLICE)
  {
    ::memset( m_apcRefPicList, 0, sizeof (m_apcRefPicList));
    ::memset( m_aiNumRefIdx,   0, sizeof ( m_aiNumRefIdx ));

    if (!checkNumPocTotalCurr)
    {
      return;
    }
  }

  Picture*  pcRefPic= NULL;
  static const uint32_t MAX_NUM_NEGATIVE_PICTURES=16;
  Picture*  RefPicSetStCurr0[MAX_NUM_NEGATIVE_PICTURES];
  Picture*  RefPicSetStCurr1[MAX_NUM_NEGATIVE_PICTURES];
  Picture*  RefPicSetLtCurr[MAX_NUM_NEGATIVE_PICTURES];
  uint32_t NumPicStCurr0 = 0;
  uint32_t NumPicStCurr1 = 0;
  uint32_t NumPicLtCurr = 0;
  int i;

  for(i=0; i < m_pRPS->getNumberOfNegativePictures(); i++)
  {
    if(m_pRPS->getUsed(i))
    {
      pcRefPic = xGetRefPic(rcListPic, getPOC()+m_pRPS->getDeltaPOC(i));
      pcRefPic->longTerm = false;
      pcRefPic->extendPicBorder();
      RefPicSetStCurr0[NumPicStCurr0] = pcRefPic;
      NumPicStCurr0++;
    }
  }

  for(; i < m_pRPS->getNumberOfNegativePictures()+m_pRPS->getNumberOfPositivePictures(); i++)
  {
    if(m_pRPS->getUsed(i))
    {
      pcRefPic = xGetRefPic(rcListPic, getPOC()+m_pRPS->getDeltaPOC(i));
      pcRefPic->longTerm = false;
      pcRefPic->extendPicBorder();
      RefPicSetStCurr1[NumPicStCurr1] = pcRefPic;
      NumPicStCurr1++;
    }
  }

  for(i = m_pRPS->getNumberOfNegativePictures()+m_pRPS->getNumberOfPositivePictures()+m_pRPS->getNumberOfLongtermPictures()-1; i > m_pRPS->getNumberOfNegativePictures()+m_pRPS->getNumberOfPositivePictures()-1 ; i--)
  {
    if(m_pRPS->getUsed(i))
    {
      pcRefPic = xGetLongTermRefPic(rcListPic, m_pRPS->getPOC(i), m_pRPS->getCheckLTMSBPresent(i));
      pcRefPic->longTerm = true;
      pcRefPic->extendPicBorder();
      RefPicSetLtCurr[NumPicLtCurr] = pcRefPic;
      NumPicLtCurr++;
    }
    if(pcRefPic==NULL)
    {
      pcRefPic = xGetLongTermRefPic(rcListPic, m_pRPS->getPOC(i), m_pRPS->getCheckLTMSBPresent(i));
    }
  }
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#if JVET_M0483_IBC==0
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  if (getSPS()->getIBCMode())
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  {
    RefPicSetLtCurr[NumPicLtCurr] = getPic();
    //getPic()->setIsLongTerm(true);
    getPic()->longTerm = true;
    NumPicLtCurr++;
  }
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#endif
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  // ref_pic_list_init
  Picture*  rpsCurrList0[MAX_NUM_REF+1];
  Picture*  rpsCurrList1[MAX_NUM_REF+1];
  int numPicTotalCurr = NumPicStCurr0 + NumPicStCurr1 + NumPicLtCurr;

  if (checkNumPocTotalCurr)
  {
    // The variable NumPocTotalCurr is derived as specified in subclause 7.4.7.2. It is a requirement of bitstream conformance that the following applies to the value of NumPocTotalCurr:
    // - If the current picture is a BLA or CRA picture, the value of NumPocTotalCurr shall be equal to 0.
    // - Otherwise, when the current picture contains a P or B slice, the value of NumPocTotalCurr shall not be equal to 0.
    if (getRapPicFlag())
    {
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#if JVET_M0483_IBC==0
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      if (getSPS()->getIBCMode())
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      {
        CHECK(numPicTotalCurr != 1, "Invalid state");
      }
      else
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#endif
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        CHECK(numPicTotalCurr != 0, "Invalid state");
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    }

    if (m_eSliceType == I_SLICE)
    {
      return;
    }

    CHECK(numPicTotalCurr == 0, "Invalid state");
    // general tier and level limit:
    CHECK(numPicTotalCurr > 8, "Invalid state");
  }

  int cIdx = 0;
  for ( i=0; i<NumPicStCurr0; i++, cIdx++)
  {
    rpsCurrList0[cIdx] = RefPicSetStCurr0[i];
  }
  for ( i=0; i<NumPicStCurr1; i++, cIdx++)
  {
    rpsCurrList0[cIdx] = RefPicSetStCurr1[i];
  }
  for ( i=0; i<NumPicLtCurr;  i++, cIdx++)
  {
    rpsCurrList0[cIdx] = RefPicSetLtCurr[i];
  }
  CHECK(cIdx != numPicTotalCurr, "Invalid state");

  if (m_eSliceType==B_SLICE)
  {
    cIdx = 0;
    for ( i=0; i<NumPicStCurr1; i++, cIdx++)
    {
      rpsCurrList1[cIdx] = RefPicSetStCurr1[i];
    }
    for ( i=0; i<NumPicStCurr0; i++, cIdx++)
    {
      rpsCurrList1[cIdx] = RefPicSetStCurr0[i];
    }
    for ( i=0; i<NumPicLtCurr;  i++, cIdx++)
    {
      rpsCurrList1[cIdx] = RefPicSetLtCurr[i];
    }
    CHECK(cIdx != numPicTotalCurr, "Invalid state");
  }

  ::memset(m_bIsUsedAsLongTerm, 0, sizeof(m_bIsUsedAsLongTerm));

  for (int rIdx = 0; rIdx < m_aiNumRefIdx[REF_PIC_LIST_0]; rIdx ++)
  {
    cIdx = m_RefPicListModification.getRefPicListModificationFlagL0() ? m_RefPicListModification.getRefPicSetIdxL0(rIdx) : rIdx % numPicTotalCurr;
    CHECK(cIdx < 0 || cIdx >= numPicTotalCurr, "Invalid state");
    m_apcRefPicList[REF_PIC_LIST_0][rIdx] = rpsCurrList0[ cIdx ];
    m_bIsUsedAsLongTerm[REF_PIC_LIST_0][rIdx] = ( cIdx >= NumPicStCurr0 + NumPicStCurr1 );
  }
  if ( m_eSliceType != B_SLICE )
  {
    m_aiNumRefIdx[REF_PIC_LIST_1] = 0;
    ::memset( m_apcRefPicList[REF_PIC_LIST_1], 0, sizeof(m_apcRefPicList[REF_PIC_LIST_1]));
  }
  else
  {
    for (int rIdx = 0; rIdx < m_aiNumRefIdx[REF_PIC_LIST_1]; rIdx ++)
    {
      cIdx = m_RefPicListModification.getRefPicListModificationFlagL1() ? m_RefPicListModification.getRefPicSetIdxL1(rIdx) : rIdx % numPicTotalCurr;
      CHECK(cIdx < 0 || cIdx >= numPicTotalCurr, "Invalid state");
      m_apcRefPicList[REF_PIC_LIST_1][rIdx] = rpsCurrList1[ cIdx ];
      m_bIsUsedAsLongTerm[REF_PIC_LIST_1][rIdx] = ( cIdx >= NumPicStCurr0 + NumPicStCurr1 );
    }
  }
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#if JVET_M0483_IBC==0
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  if (getSPS()->getIBCMode())
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  {
    m_apcRefPicList[REF_PIC_LIST_0][m_aiNumRefIdx[REF_PIC_LIST_0] - 1] = getPic();
    m_bIsUsedAsLongTerm[REF_PIC_LIST_0][m_aiNumRefIdx[REF_PIC_LIST_0] - 1] = true;
  }
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#endif
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    // For generalized B
  // note: maybe not existed case (always L0 is copied to L1 if L1 is empty)
  if( bCopyL0toL1ErrorCase && isInterB() && getNumRefIdx(REF_PIC_LIST_1) == 0)
  {
    int iNumRefIdx = getNumRefIdx(REF_PIC_LIST_0);
    setNumRefIdx( REF_PIC_LIST_1, iNumRefIdx );

    for (int iRefIdx = 0; iRefIdx < iNumRefIdx; iRefIdx++)
    {
      m_apcRefPicList[REF_PIC_LIST_1][iRefIdx] = m_apcRefPicList[REF_PIC_LIST_0] [iRefIdx];
    }
  }
}


int Slice::getNumRpsCurrTempList() const
{
  int numRpsCurrTempList = 0;

  if (m_eSliceType == I_SLICE)
  {
    return 0;
  }
  for(uint32_t i=0; i < m_pRPS->getNumberOfNegativePictures()+ m_pRPS->getNumberOfPositivePictures() + m_pRPS->getNumberOfLongtermPictures(); i++)
  {
    if(m_pRPS->getUsed(i))
    {
      numRpsCurrTempList++;
    }
  }
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#if JVET_M0483_IBC==0
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  if (getSPS()->getIBCMode())
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  {
    return numRpsCurrTempList + 1;
  }
  else
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#endif
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    return numRpsCurrTempList;
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}

void Slice::initEqualRef()
{
  for (int iDir = 0; iDir < NUM_REF_PIC_LIST_01; iDir++)
  {
    for (int iRefIdx1 = 0; iRefIdx1 < MAX_NUM_REF; iRefIdx1++)
    {
      for (int iRefIdx2 = iRefIdx1; iRefIdx2 < MAX_NUM_REF; iRefIdx2++)
      {
        m_abEqualRef[iDir][iRefIdx1][iRefIdx2] = m_abEqualRef[iDir][iRefIdx2][iRefIdx1] = (iRefIdx1 == iRefIdx2? true : false);
      }
    }
  }
}

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("Collocated_ref_idx shall always be the same for all slices of a coded picture!");
      }
      else
      {
        break;
      }
    }
  }
}

void Slice::checkCRA(const ReferencePictureSet *pReferencePictureSet, int& pocCRA, NalUnitType& associatedIRAPType, PicList& rcListPic)
{
  for(int i = 0; i < pReferencePictureSet->getNumberOfNegativePictures()+pReferencePictureSet->getNumberOfPositivePictures(); i++)
  {
    if(pocCRA < MAX_UINT && getPOC() > pocCRA)
    {
      CHECK(getPOC()+pReferencePictureSet->getDeltaPOC(i) < pocCRA, "Invalid state");
    }
  }
  for(int i = pReferencePictureSet->getNumberOfNegativePictures()+pReferencePictureSet->getNumberOfPositivePictures(); i < pReferencePictureSet->getNumberOfPictures(); i++)
  {
    if(pocCRA < MAX_UINT && getPOC() > pocCRA)
    {
      if (!pReferencePictureSet->getCheckLTMSBPresent(i))
      {
        CHECK(xGetLongTermRefPic(rcListPic, pReferencePictureSet->getPOC(i), false)->getPOC() < pocCRA, "Invalid state");
      }
      else
      {
        CHECK(pReferencePictureSet->getPOC(i) < 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();
  }
  else if ( getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_LP
         || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL
         || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_N_LP ) // BLA picture found
  {
    pocCRA = getPOC();
    associatedIRAPType = getNalUnitType();
  }
}

/** Function for marking the reference pictures when an IDR/CRA/CRANT/BLA/BLANT is encountered.
 * \param pocCRA POC of the CRA/CRANT/BLA/BLANT picture
 * \param bRefreshPending flag indicating if a deferred decoding refresh is pending
 * \param rcListPic reference to the reference picture list
 * This function marks the reference pictures as "unused for reference" in the following conditions.
 * If the nal_unit_type is IDR/BLA/BLANT, all pictures in the reference picture list
 * are marked as "unused for reference"
 *    If the nal_unit_type is BLA/BLANT, set the pocCRA to the temporal reference of the current picture.
 * Otherwise
 *    If the bRefreshPending flag is true (a deferred decoding refresh is pending) and the current
 *    temporal reference is greater than the temporal reference of the latest CRA/CRANT/BLA/BLANT picture (pocCRA),
 *    mark all reference pictures except the latest CRA/CRANT/BLA/BLANT picture as "unused for reference" and set
 *    the bRefreshPending flag to false.
 *    If the nal_unit_type is CRA/CRANT, set the bRefreshPending flag to true and pocCRA to the temporal
 *    reference of the current picture.
 * Note that the current picture is already placed in the reference list and its marking is not changed.
 * If the current picture has a nal_ref_idc that is not 0, it will remain marked as "used for reference".
 */
void Slice::decodingRefreshMarking(int& pocCRA, bool& bRefreshPending, PicList& rcListPic, const bool bEfficientFieldIRAPEnabled)
{
  Picture* rpcPic;
  int      pocCurr = getPOC();

  if ( getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_LP
    || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL
    || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_N_LP
    || getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL
    || getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP )  // IDR or BLA picture
  {
    // mark all pictures as not used for reference
    PicList::iterator        iterPic       = rcListPic.begin();
    while (iterPic != rcListPic.end())
    {
      rpcPic = *(iterPic);
      if (rpcPic->getPOC() != pocCurr)
      {
        rpcPic->referenced = false;
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#if JVET_M0253_HASH_ME
        rpcPic->getHashMap()->clearAll();
#endif
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      }
      iterPic++;
    }
    if ( getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_LP
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL
      || getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_N_LP )
    {
      pocCRA = pocCurr;
    }
    if (bEfficientFieldIRAPEnabled)
    {
      bRefreshPending = true;
    }
  }
  else // CRA or No DR
  {
    if(bEfficientFieldIRAPEnabled && (getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_IDR_N_LP || getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL))
    {
      if (bRefreshPending==true && pocCurr > m_iLastIDR) // IDR reference marking pending
      {
        PicList::iterator        iterPic       = rcListPic.begin();
        while (iterPic != rcListPic.end())
        {
          rpcPic = *(iterPic);
          if (rpcPic->getPOC() != pocCurr && rpcPic->getPOC() != m_iLastIDR)
          {
            rpcPic->referenced = false;
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#if JVET_M0253_HASH_ME
            rpcPic->getHashMap()->clearAll();
#endif
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          }
          iterPic++;
        }
        bRefreshPending = false;
      }
    }
    else
    {
      if (bRefreshPending==true && pocCurr > pocCRA) // CRA reference marking pending
      {
        PicList::iterator iterPic = rcListPic.begin();
        while (iterPic != rcListPic.end())
        {
          rpcPic = *(iterPic);
          if (rpcPic->getPOC() != pocCurr && rpcPic->getPOC() != pocCRA)
          {
            rpcPic->referenced = false;
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#if JVET_M0253_HASH_ME
            rpcPic->getHashMap()->clearAll();
#endif
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          }
          iterPic++;
        }
        bRefreshPending = false;
      }
    }
    if ( getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA ) // CRA picture found
    {
      bRefreshPending = true;
      pocCRA = pocCurr;
    }
  }
}

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

  int i, j, k;

  m_iPOC                 = pSrc->m_iPOC;
  m_eNalUnitType         = pSrc->m_eNalUnitType;
  m_eSliceType           = pSrc->m_eSliceType;
  m_iSliceQp             = pSrc->m_iSliceQp;
  m_iSliceQpBase         = pSrc->m_iSliceQpBase;
  m_ChromaQpAdjEnabled              = pSrc->m_ChromaQpAdjEnabled;
  m_deblockingFilterDisable         = pSrc->m_deblockingFilterDisable;
  m_deblockingFilterOverrideFlag    = pSrc->m_deblockingFilterOverrideFlag;
  m_deblockingFilterBetaOffsetDiv2  = pSrc->m_deblockingFilterBetaOffsetDiv2;
  m_deblockingFilterTcOffsetDiv2    = pSrc->m_deblockingFilterTcOffsetDiv2;

  for (i = 0; i < NUM_REF_PIC_LIST_01; i++)
  {
    m_aiNumRefIdx[i]     = pSrc->m_aiNumRefIdx[i];
  }

  for (i = 0; i < MAX_NUM_REF; i++)
  {
    m_list1IdxToList0Idx[i] = pSrc->m_list1IdxToList0Idx[i];
  }

  m_bCheckLDC             = pSrc->m_bCheckLDC;
  m_iSliceQpDelta        = pSrc->m_iSliceQpDelta;
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#if JVET_M0444_SMVD
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  m_biDirPred = pSrc->m_biDirPred;
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  m_symRefIdx[0] = pSrc->m_symRefIdx[0];
  m_symRefIdx[1] = pSrc->m_symRefIdx[1];
#endif

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  for (uint32_t component = 0; component < MAX_NUM_COMPONENT; component++)
  {
    m_iSliceChromaQpDelta[component] = pSrc->m_iSliceChromaQpDelta[component];
  }
  for (i = 0; i < NUM_REF_PIC_LIST_01; i++)
  {
    for (j = 0; j < MAX_NUM_REF; j++)
    {
      m_apcRefPicList[i][j]  = pSrc->m_apcRefPicList[i][j];
      m_aiRefPOCList[i][j]   = pSrc->m_aiRefPOCList[i][j];
      m_bIsUsedAsLongTerm[i][j] = pSrc->m_bIsUsedAsLongTerm[i][j];
    }
    m_bIsUsedAsLongTerm[i][MAX_NUM_REF] = pSrc->m_bIsUsedAsLongTerm[i][MAX_NUM_REF];
  }
  if( cpyAlmostAll ) m_iDepth = pSrc->m_iDepth;

  // access channel
  if( cpyAlmostAll ) m_pRPS   = pSrc->m_pRPS;
  m_iLastIDR             = pSrc->m_iLastIDR;

  if( cpyAlmostAll ) m_pcPic  = pSrc->m_pcPic;

  m_colFromL0Flag        = pSrc->m_colFromL0Flag;
  m_colRefIdx            = pSrc->m_colRefIdx;

  if( cpyAlmostAll ) setLambdas(pSrc->getLambdas());

  for (i = 0; i < NUM_REF_PIC_LIST_01; i++)
  {
    for (j = 0; j < MAX_NUM_REF; j++)
    {
      for (k =0; k < MAX_NUM_REF; k++)
      {
        m_abEqualRef[i][j][k] = pSrc->m_abEqualRef[i][j][k];
      }
    }
  }

  m_uiTLayer                      = pSrc->m_uiTLayer;
  m_bTLayerSwitchingFlag          = pSrc->m_bTLayerSwitchingFlag;

  m_sliceMode                     = pSrc->m_sliceMode;
  m_sliceArgument                 = pSrc->m_sliceArgument;
  m_sliceCurStartCtuTsAddr        = pSrc->m_sliceCurStartCtuTsAddr;
  m_sliceCurEndCtuTsAddr          = pSrc->m_sliceCurEndCtuTsAddr;
  m_independentSliceIdx           = pSrc->m_independentSliceIdx;
#if HEVC_DEPENDENT_SLICES
  m_sliceSegmentIdx               = pSrc->m_sliceSegmentIdx;
  m_sliceSegmentMode              = pSrc->m_sliceSegmentMode;
  m_sliceSegmentArgument          = pSrc->m_sliceSegmentArgument;
  m_sliceSegmentCurStartCtuTsAddr = pSrc->m_sliceSegmentCurStartCtuTsAddr;
  m_sliceSegmentCurEndCtuTsAddr   = pSrc->m_sliceSegmentCurEndCtuTsAddr;
#endif
  m_nextSlice                     = pSrc->m_nextSlice;
#if HEVC_DEPENDENT_SLICES
  m_nextSliceSegment              = pSrc->m_nextSliceSegment;
#endif
  m_clpRngs                       = pSrc->m_clpRngs;
  m_pendingRasInit                = pSrc->m_pendingRasInit;

  for ( uint32_t e=0 ; e<NUM_REF_PIC_LIST_01 ; e++ )
  {
    for ( uint32_t n=0 ; n<MAX_NUM_REF ; n++ )
    {
      memcpy(m_weightPredTable[e][n], pSrc->m_weightPredTable[e][n], sizeof(WPScalingParam)*MAX_NUM_COMPONENT );
    }
  }

  for( uint32_t ch = 0 ; ch < MAX_NUM_CHANNEL_TYPE; ch++)
  {
    m_saoEnabledFlag[ch] = pSrc->m_saoEnabledFlag[ch];
  }

  m_cabacInitFlag                 = pSrc->m_cabacInitFlag;

  m_bLMvdL1Zero                   = pSrc->m_bLMvdL1Zero;
  m_LFCrossSliceBoundaryFlag      = pSrc->m_LFCrossSliceBoundaryFlag;
  m_enableTMVPFlag                = pSrc->m_enableTMVPFlag;
  m_maxNumMergeCand               = pSrc->m_maxNumMergeCand;
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  m_disFracMMVD                   = pSrc->m_disFracMMVD;
#endif
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  if( cpyAlmostAll ) m_encCABACTableIdx  = pSrc->m_encCABACTableIdx;
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  m_splitConsOverrideFlag         = pSrc->m_splitConsOverrideFlag;
  m_uiMinQTSize                   = pSrc->m_uiMinQTSize;
  m_uiMaxBTDepth                  = pSrc->m_uiMaxBTDepth;
  m_uiMaxTTSize                   = pSrc->m_uiMaxTTSize;
  m_uiMinQTSizeIChroma            = pSrc->m_uiMinQTSizeIChroma;
  m_uiMaxBTDepthIChroma           = pSrc->m_uiMaxBTDepthIChroma;
  m_uiMaxBTSizeIChroma            = pSrc->m_uiMaxBTSizeIChroma;
  m_uiMaxTTSizeIChroma            = pSrc->m_uiMaxTTSizeIChroma;
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  m_uiMaxBTSize                   = pSrc->m_uiMaxBTSize;
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  m_depQuantEnabledFlag           = pSrc->m_depQuantEnabledFlag;
  m_signDataHidingEnabledFlag     = pSrc->m_signDataHidingEnabledFlag;

#if JVET_M0427_INLOOP_RESHAPER
  m_sliceReshapeInfo              = pSrc->m_sliceReshapeInfo;
#endif
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}


/** Function for checking if this is a switching-point
*/
bool Slice::isTemporalLayerSwitchingPoint(PicList& rcListPic) const
{
  // loop through all pictures in the reference picture buffer
  PicList::iterator iterPic = rcListPic.begin();
  while ( iterPic != rcListPic.end())
  {
    const Picture* pcPic = *(iterPic++);
    if( pcPic->referenced && pcPic->poc != getPOC())
    {
      if( pcPic->layer >= getTLayer())
      {
        return false;
      }
    }
  }
  return true;
}

/** Function for checking if this is a STSA candidate
 */
bool Slice::isStepwiseTemporalLayerSwitchingPointCandidate(PicList& rcListPic) const
{
  PicList::iterator iterPic = rcListPic.begin();
  while ( iterPic != rcListPic.end())
  {
    const Picture* pcPic = *(iterPic++);
    if( pcPic->referenced &&  pcPic->usedByCurr && pcPic->poc != getPOC())
    {
      if( pcPic->layer >= getTLayer())
      {
        return false;
      }
    }
  }
  return true;
}


void Slice::checkLeadingPictureRestrictions(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_BLA_W_LP ||
       nalUnitType > NAL_UNIT_RESERVED_IRAP_VCL23)
    {
      CHECK( nalUnitType != NAL_UNIT_CODED_SLICE_RASL_N &&
             nalUnitType != NAL_UNIT_CODED_SLICE_RASL_R &&
             nalUnitType != NAL_UNIT_CODED_SLICE_RADL_N &&
             nalUnitType != NAL_UNIT_CODED_SLICE_RADL_R, "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_N ||
           nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R ||
           nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N ||
           nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R, "Invalid NAL unit type" );
  }

  // No RASL pictures shall be present in the bitstream that are associated
  // with a BLA picture having nal_unit_type equal to BLA_W_RADL or BLA_N_LP.
  if(nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N ||
     nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R)
  {
    CHECK (this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL ||
           this->getAssociatedIRAPType() == NAL_UNIT_CODED_SLICE_BLA_N_LP, "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_N ||
     nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R)
  {
    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_N ||
     nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R)