source: SHVCSoftware/branches/SHM-3.1-dev/source/Lib/TLibDecoder/TDecTop.cpp @ 409

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/** \file     TDecTop.cpp
    \brief    decoder class
*/

#include "NALread.h"
#include "TDecTop.h"

#if SVC_EXTENSION
UInt  TDecTop::m_prevPOC = MAX_UINT;
UInt  TDecTop::m_uiPrevLayerId = MAX_UINT;
Bool  TDecTop::m_bFirstSliceInSequence = true;
#endif

//! \ingroup TLibDecoder
//! \{

TDecTop::TDecTop()
{
  m_pcPic = 0;
  m_iMaxRefPicNum = 0;
#if ENC_DEC_TRACE
  g_hTrace = fopen( "TraceDec.txt", "wb" );
  g_bJustDoIt = g_bEncDecTraceDisable;
  g_nSymbolCounter = 0;
#endif
  m_pocCRA = 0;
  m_prevRAPisBLA = false;
  m_pocRandomAccess = MAX_INT;          
#if !SVC_EXTENSION
  m_prevPOC                = MAX_INT;
#endif
  m_bFirstSliceInPicture    = true;
#if !SVC_EXTENSION
  m_bFirstSliceInSequence   = true;
#endif
#if SVC_EXTENSION 
  m_layerId = 0;
#if AVC_BASE
  m_pBLReconFile = NULL;
#endif
  memset(m_cIlpPic, 0, sizeof(m_cIlpPic));
#endif
#if AVC_SYNTAX || SYNTAX_OUTPUT
  m_pBLSyntaxFile = NULL;
#endif
#if HM12_RANDOM_ACCESS
  m_prevSliceSkipped = false;
  m_skippedPOC = 0;
#endif
}

TDecTop::~TDecTop()
{
#if ENC_DEC_TRACE
  fclose( g_hTrace );
#endif
}

Void TDecTop::create()
{
#if SVC_EXTENSION
  m_cGopDecoder.create( m_layerId );
#else
  m_cGopDecoder.create();
#endif
  m_apcSlicePilot = new TComSlice;
  m_uiSliceIdx = 0;
}

Void TDecTop::destroy()
{
  m_cGopDecoder.destroy();
  
  delete m_apcSlicePilot;
  m_apcSlicePilot = NULL;
  
  m_cSliceDecoder.destroy();
#if SVC_EXTENSION
  for(Int i=0; i<MAX_NUM_REF; i++)
  {
    if(m_cIlpPic[i])
    {
      m_cIlpPic[i]->destroy();
      delete m_cIlpPic[i];
      m_cIlpPic[i] = NULL;
    }
  }    
#endif
}

Void TDecTop::init()
{
#if !SVC_EXTENSION
  // initialize ROM
  initROM();
#endif
#if SVC_EXTENSION
  m_cGopDecoder.init( m_ppcTDecTop, &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cSAO);
  m_cSliceDecoder.init( m_ppcTDecTop, &m_cEntropyDecoder, &m_cCuDecoder );
#else
  m_cGopDecoder.init( &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cSAO);
  m_cSliceDecoder.init( &m_cEntropyDecoder, &m_cCuDecoder );
#endif
  m_cEntropyDecoder.init(&m_cPrediction);
}

#if SVC_EXTENSION
#if !REPN_FORMAT_IN_VPS
Void TDecTop::xInitILRP(TComSPS *pcSPS)
#else
Void TDecTop::xInitILRP(TComSlice *slice)
#endif
{
#if REPN_FORMAT_IN_VPS
  TComSPS* pcSPS = slice->getSPS();
  Int bitDepthY   = slice->getBitDepthY();
  Int bitDepthC   = slice->getBitDepthC();
  Int picWidth    = slice->getPicWidthInLumaSamples();
  Int picHeight   = slice->getPicHeightInLumaSamples();
#endif
  if(m_layerId>0)
  {
#if REPN_FORMAT_IN_VPS
    g_bitDepthY     = bitDepthY;
    g_bitDepthC     = bitDepthC;
#else
    g_bitDepthY     = pcSPS->getBitDepthY();
    g_bitDepthC     = pcSPS->getBitDepthC();
#endif
    g_uiMaxCUWidth  = pcSPS->getMaxCUWidth();
    g_uiMaxCUHeight = pcSPS->getMaxCUHeight();
    g_uiMaxCUDepth  = pcSPS->getMaxCUDepth();
    g_uiAddCUDepth  = max (0, pcSPS->getLog2MinCodingBlockSize() - (Int)pcSPS->getQuadtreeTULog2MinSize() );

    Int  numReorderPics[MAX_TLAYER];
    Window &conformanceWindow = pcSPS->getConformanceWindow();
    Window defaultDisplayWindow = pcSPS->getVuiParametersPresentFlag() ? pcSPS->getVuiParameters()->getDefaultDisplayWindow() : Window();

    for( Int temporalLayer=0; temporalLayer < MAX_TLAYER; temporalLayer++) 
    {
      numReorderPics[temporalLayer] = pcSPS->getNumReorderPics(temporalLayer);
    }

    if (m_cIlpPic[0] == NULL)
    {
      for (Int j=0; j < MAX_LAYERS /*MAX_NUM_REF*/; j++)  // consider to set to NumDirectRefLayers[LayerIdInVps[nuh_layer_id]]
      {

        m_cIlpPic[j] = new  TComPic;
#if REPN_FORMAT_IN_VPS
#if SVC_UPSAMPLING
        m_cIlpPic[j]->create(picWidth, picHeight, g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, conformanceWindow, defaultDisplayWindow, numReorderPics, pcSPS, true);
#else
        m_cIlpPic[j]->create(picWidth, picHeight, g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#else
#if SVC_UPSAMPLING
        m_cIlpPic[j]->create(pcSPS->getPicWidthInLumaSamples(), pcSPS->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, conformanceWindow, defaultDisplayWindow, numReorderPics, pcSPS, true);
#else
        m_cIlpPic[j]->create(pcSPS->getPicWidthInLumaSamples(), pcSPS->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#endif
        for (Int i=0; i<m_cIlpPic[j]->getPicSym()->getNumberOfCUsInFrame(); i++)
        {
          m_cIlpPic[j]->getPicSym()->getCU(i)->initCU(m_cIlpPic[j], i);
        }
      }
    }
  }
}



Void TDecTop::setILRPic(TComPic *pcPic)
{
  for( Int i = 0; i < pcPic->getSlice(0)->getActiveNumILRRefIdx(); i++ )
  {
    Int refLayerIdc = pcPic->getSlice(0)->getInterLayerPredLayerIdc(i);

    if(m_cIlpPic[refLayerIdc])
    {
      m_cIlpPic[refLayerIdc]->copyUpsampledPictureYuv(pcPic->getFullPelBaseRec(refLayerIdc), m_cIlpPic[refLayerIdc]->getPicYuvRec());
      m_cIlpPic[refLayerIdc]->getSlice(0)->setPOC(pcPic->getPOC());
      m_cIlpPic[refLayerIdc]->setLayerId(pcPic->getSlice(0)->getBaseColPic(refLayerIdc)->getLayerId()); //set reference layerId
      m_cIlpPic[refLayerIdc]->getPicYuvRec()->setBorderExtension(false);
      m_cIlpPic[refLayerIdc]->getPicYuvRec()->extendPicBorder();
      for (Int j=0; j<m_cIlpPic[refLayerIdc]->getPicSym()->getNumberOfCUsInFrame(); j++)  // set reference CU layerId
      {
        m_cIlpPic[refLayerIdc]->getPicSym()->getCU(j)->setLayerId(m_cIlpPic[refLayerIdc]->getLayerId());
      }
    }
  }
}
#endif

Void TDecTop::deletePicBuffer ( )
{
  TComList<TComPic*>::iterator  iterPic   = m_cListPic.begin();
  Int iSize = Int( m_cListPic.size() );
  
  for (Int i = 0; i < iSize; i++ )
  {
    TComPic* pcPic = *(iterPic++);
#if SVC_EXTENSION
    if( pcPic )
    {
      pcPic->destroy();

      delete pcPic;
      pcPic = NULL;
    }
#else
    pcPic->destroy();
    
    delete pcPic;
    pcPic = NULL;
#endif
  }
  
  m_cSAO.destroy();
  
  m_cLoopFilter.        destroy();
  
#if !SVC_EXTENSION
  // destroy ROM
  destroyROM();
#endif
}

Void TDecTop::xGetNewPicBuffer ( TComSlice* pcSlice, TComPic*& rpcPic )
{
  Int  numReorderPics[MAX_TLAYER];
  Window &conformanceWindow = pcSlice->getSPS()->getConformanceWindow();
  Window defaultDisplayWindow = pcSlice->getSPS()->getVuiParametersPresentFlag() ? pcSlice->getSPS()->getVuiParameters()->getDefaultDisplayWindow() : Window();

  for( Int temporalLayer=0; temporalLayer < MAX_TLAYER; temporalLayer++) 
  {
    numReorderPics[temporalLayer] = pcSlice->getSPS()->getNumReorderPics(temporalLayer);
  }

  m_iMaxRefPicNum = pcSlice->getSPS()->getMaxDecPicBuffering(pcSlice->getTLayer());     // m_uiMaxDecPicBuffering has the space for the picture currently being decoded

#if SVC_EXTENSION
  m_iMaxRefPicNum += 1; // it should be updated if more than 1 resampling picture is used
#endif

  if (m_cListPic.size() < (UInt)m_iMaxRefPicNum)
  {
    rpcPic = new TComPic();

#if SVC_EXTENSION //Temporal solution, should be modified
    if(m_layerId > 0)
    {
      for(UInt i = 0; i < pcSlice->getVPS()->getNumDirectRefLayers( m_layerId ); i++ )
      {
        const Window scalEL = pcSlice->getSPS()->getScaledRefLayerWindow(i);
        Bool zeroOffsets = ( scalEL.getWindowLeftOffset() == 0 && scalEL.getWindowRightOffset() == 0 && scalEL.getWindowTopOffset() == 0 && scalEL.getWindowBottomOffset() == 0 );

#if VPS_EXTN_DIRECT_REF_LAYERS
        TDecTop *pcTDecTopBase = (TDecTop *)getRefLayerDec( i );
#else
        TDecTop *pcTDecTopBase = (TDecTop *)getLayerDec( m_layerId-1 );
#endif
        //TComPic*                      pcPic = *(pcTDecTopBase->getListPic()->begin()); 
        TComPicYuv* pcPicYuvRecBase = (*(pcTDecTopBase->getListPic()->begin()))->getPicYuvRec(); 
#if REPN_FORMAT_IN_VPS
        if(pcPicYuvRecBase->getWidth() != pcSlice->getPicWidthInLumaSamples() || pcPicYuvRecBase->getHeight() != pcSlice->getPicHeightInLumaSamples() || !zeroOffsets )
#else
        if(pcPicYuvRecBase->getWidth() != pcSlice->getSPS()->getPicWidthInLumaSamples() || pcPicYuvRecBase->getHeight() != pcSlice->getSPS()->getPicHeightInLumaSamples() || !zeroOffsets )
#endif
        {
          rpcPic->setSpatialEnhLayerFlag( i, true );

          //only for scalable extension
#if SCALABILITY_MASK_E0104
          assert( pcSlice->getVPS()->getScalabilityMask(2) == true );
#else
          assert( pcSlice->getVPS()->getScalabilityMask(1) == true );
#endif
        }
#if MAX_ONE_RESAMPLING_DIRECT_LAYERS
#if SCALABILITY_MASK_E0104
        if(pcSlice->getVPS()->getScalabilityMask(2))
#else
        if(pcSlice->getVPS()->getScalabilityMask(1))
#endif
        {
          pcSlice->setPic(rpcPic);
        }
#endif
      }
    }
#endif
    
#if REPN_FORMAT_IN_VPS
#if SVC_UPSAMPLING
    rpcPic->create ( pcSlice->getPicWidthInLumaSamples(), pcSlice->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, 
                     conformanceWindow, defaultDisplayWindow, numReorderPics, pcSlice->getSPS(), true);
#else
    rpcPic->create ( pcSlice->getPicWidthInLumaSamples(), pcSlice->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, 
                     conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#else
#if SVC_UPSAMPLING
    rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, 
                     conformanceWindow, defaultDisplayWindow, numReorderPics, pcSlice->getSPS(), true);
#else
    rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, 
                     conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#endif

    rpcPic->getPicSym()->allocSaoParam(&m_cSAO);
    m_cListPic.pushBack( rpcPic );
    
    return;
  }
  
  Bool bBufferIsAvailable = false;
  TComList<TComPic*>::iterator  iterPic   = m_cListPic.begin();
  while (iterPic != m_cListPic.end())
  {
    rpcPic = *(iterPic++);
    if ( rpcPic->getReconMark() == false && rpcPic->getOutputMark() == false)
    {
      rpcPic->setOutputMark(false);
      bBufferIsAvailable = true;
      break;
    }

    if ( rpcPic->getSlice( 0 )->isReferenced() == false  && rpcPic->getOutputMark() == false)
    {
#if !SVC_EXTENSION
      rpcPic->setOutputMark(false);
#endif
      rpcPic->setReconMark( false );
      rpcPic->getPicYuvRec()->setBorderExtension( false );
      bBufferIsAvailable = true;
      break;
    }
  }
  
  if ( !bBufferIsAvailable )
  {
    //There is no room for this picture, either because of faulty encoder or dropped NAL. Extend the buffer.
    m_iMaxRefPicNum++;
    rpcPic = new TComPic();
    m_cListPic.pushBack( rpcPic );
  }
  rpcPic->destroy();

#if REPN_FORMAT_IN_VPS
#if SVC_UPSAMPLING
  rpcPic->create ( pcSlice->getPicWidthInLumaSamples(), pcSlice->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth,
                   conformanceWindow, defaultDisplayWindow, numReorderPics, pcSlice->getSPS(), true);

#else
  rpcPic->create ( pcSlice->getPicWidthInLumaSamples(), pcSlice->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth,
                   conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#else
#if SVC_UPSAMPLING
  rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth,
                   conformanceWindow, defaultDisplayWindow, numReorderPics, pcSlice->getSPS(), true);

#else
  rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth,
                   conformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
#endif
  rpcPic->getPicSym()->allocSaoParam(&m_cSAO);
}

Void TDecTop::executeLoopFilters(Int& poc, TComList<TComPic*>*& rpcListPic)
{
  if (!m_pcPic)
  {
    /* nothing to deblock */
    return;
  }
  
  TComPic*&   pcPic         = m_pcPic;

  // Execute Deblock + Cleanup

  m_cGopDecoder.filterPicture(pcPic);

#if SYNTAX_OUTPUT
  pcPic->wrireBLSyntax( getBLSyntaxFile(), SYNTAX_BYTES );
#endif
  TComSlice::sortPicList( m_cListPic ); // sorting for application output
  poc                 = pcPic->getSlice(m_uiSliceIdx-1)->getPOC();
  rpcListPic          = &m_cListPic;  
  m_cCuDecoder.destroy();        
  m_bFirstSliceInPicture  = true;

  return;
}

#if EARLY_REF_PIC_MARKING
Void TDecTop::earlyPicMarking(Int maxTemporalLayer, std::vector<Int>& targetDecLayerIdSet)
{
  UInt currTid = m_pcPic->getTLayer();
  UInt highestTid = (maxTemporalLayer >= 0) ? maxTemporalLayer : (m_pcPic->getSlice(0)->getSPS()->getMaxTLayers() - 1);
  UInt latestDecLayerId = m_layerId;
  UInt numTargetDecLayers = 0;
  Int targetDecLayerIdList[MAX_LAYERS];
  UInt latestDecIdx = 0;
  TComSlice* pcSlice = m_pcPic->getSlice(0);

  if ( currTid != highestTid )  // Marking  process is only applicaple for highest decoded TLayer
  {
    return;
  }

  // currPic must be marked as "used for reference" and must be a sub-layer non-reference picture
  if ( !((pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_TRAIL_N  ||
          pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_TSA_N    ||
          pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_STSA_N   ||
          pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_RADL_N   ||
          pcSlice->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_N   ||
          pcSlice->getNalUnitType() == NAL_UNIT_RESERVED_VCL_N10     ||
          pcSlice->getNalUnitType() == NAL_UNIT_RESERVED_VCL_N12     ||
          pcSlice->getNalUnitType() == NAL_UNIT_RESERVED_VCL_N14) && pcSlice->isReferenced()))
  {
    return;
  }

  if ( targetDecLayerIdSet.size() == 0 ) // Cannot mark if we don't know the number of scalable layers
  {
    return;
  }

  for (std::vector<Int>::iterator it = targetDecLayerIdSet.begin(); it != targetDecLayerIdSet.end(); it++)
  {
    if ( latestDecLayerId == (*it) )
    {
      latestDecIdx = numTargetDecLayers;
    }
    targetDecLayerIdList[numTargetDecLayers++] = (*it);
  }

  Int remainingInterLayerReferencesFlag = 0;
  if ( currTid <= pcSlice->getVPS()->getMaxTidIlRefPicsPlus1(latestDecLayerId) - 1 )
  {
    for ( Int j = latestDecIdx + 1; j < numTargetDecLayers; j++ )
    {
      for ( Int k = 0; k < m_ppcTDecTop[targetDecLayerIdList[j]]->getNumDirectRefLayers(); k++ )
      {
        if ( latestDecIdx == m_ppcTDecTop[targetDecLayerIdList[j]]->getRefLayerId(k) )
        {
          remainingInterLayerReferencesFlag = 1;
        }
      }
    }
  }

  if ( remainingInterLayerReferencesFlag == 0 )
  {
    pcSlice->setReferenced(false);
  }
}
#endif

Void TDecTop::xCreateLostPicture(Int iLostPoc) 
{
  printf("\ninserting lost poc : %d\n",iLostPoc);
  TComSlice cFillSlice;
#if SVC_EXTENSION
  cFillSlice.setSPS( m_parameterSetManagerDecoder[m_layerId].getFirstSPS() );
  cFillSlice.setPPS( m_parameterSetManagerDecoder[m_layerId].getFirstPPS() );
  cFillSlice.setVPS( m_parameterSetManagerDecoder[m_layerId].getFirstVPS() );
  cFillSlice.initSlice( m_layerId );
#else
  cFillSlice.setSPS( m_parameterSetManagerDecoder.getFirstSPS() );
  cFillSlice.setPPS( m_parameterSetManagerDecoder.getFirstPPS() );
  cFillSlice.initSlice();
#endif
  TComPic *cFillPic;
  xGetNewPicBuffer(&cFillSlice,cFillPic);
#if SVC_EXTENSION
  cFillPic->getSlice(0)->setSPS( m_parameterSetManagerDecoder[m_layerId].getFirstSPS() );
  cFillPic->getSlice(0)->setPPS( m_parameterSetManagerDecoder[m_layerId].getFirstPPS() );
  cFillPic->getSlice(0)->setVPS( m_parameterSetManagerDecoder[m_layerId].getFirstVPS() );
  cFillPic->getSlice(0)->initSlice( m_layerId );
#else
  cFillPic->getSlice(0)->setSPS( m_parameterSetManagerDecoder.getFirstSPS() );
  cFillPic->getSlice(0)->setPPS( m_parameterSetManagerDecoder.getFirstPPS() );
  cFillPic->getSlice(0)->initSlice();
#endif
  
  TComList<TComPic*>::iterator iterPic = m_cListPic.begin();
  Int closestPoc = 1000000;
  while ( iterPic != m_cListPic.end())
  {
    TComPic * rpcPic = *(iterPic++);
    if(abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)<closestPoc&&abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)!=0&&rpcPic->getPicSym()->getSlice(0)->getPOC()!=m_apcSlicePilot->getPOC())
    {
      closestPoc=abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc);
    }
  }
  iterPic = m_cListPic.begin();
  while ( iterPic != m_cListPic.end())
  {
    TComPic *rpcPic = *(iterPic++);
    if(abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)==closestPoc&&rpcPic->getPicSym()->getSlice(0)->getPOC()!=m_apcSlicePilot->getPOC())
    {
      printf("copying picture %d to %d (%d)\n",rpcPic->getPicSym()->getSlice(0)->getPOC() ,iLostPoc,m_apcSlicePilot->getPOC());
      rpcPic->getPicYuvRec()->copyToPic(cFillPic->getPicYuvRec());
      break;
    }
  }
  cFillPic->setCurrSliceIdx(0);
  for(Int i=0; i<cFillPic->getNumCUsInFrame(); i++) 
  {
    cFillPic->getCU(i)->initCU(cFillPic,i);
  }
  cFillPic->getSlice(0)->setReferenced(true);
  cFillPic->getSlice(0)->setPOC(iLostPoc);
  cFillPic->setReconMark(true);
  cFillPic->setOutputMark(true);
  if(m_pocRandomAccess == MAX_INT)
  {
    m_pocRandomAccess = iLostPoc;
  }
}


Void TDecTop::xActivateParameterSets()
{
#if SVC_EXTENSION
  m_parameterSetManagerDecoder[m_layerId].applyPrefetchedPS();
  
  TComPPS *pps = m_parameterSetManagerDecoder[m_layerId].getPPS(m_apcSlicePilot->getPPSId());
  assert (pps != 0);

  TComSPS *sps = m_parameterSetManagerDecoder[m_layerId].getSPS(pps->getSPSId());
  assert (sps != 0);

  if( false == m_parameterSetManagerDecoder[m_layerId].activatePPS(m_apcSlicePilot->getPPSId(), m_apcSlicePilot->isIRAP()) )
#else
  m_parameterSetManagerDecoder.applyPrefetchedPS();
  
  TComPPS *pps = m_parameterSetManagerDecoder.getPPS(m_apcSlicePilot->getPPSId());
  assert (pps != 0);

  TComSPS *sps = m_parameterSetManagerDecoder.getSPS(pps->getSPSId());
  assert (sps != 0);

  if (false == m_parameterSetManagerDecoder.activatePPS(m_apcSlicePilot->getPPSId(),m_apcSlicePilot->isIRAP()))
#endif
  {
    printf ("Parameter set activation failed!");
    assert (0);
  }

  if( pps->getDependentSliceSegmentsEnabledFlag() )
  {
    Int NumCtx = pps->getEntropyCodingSyncEnabledFlag()?2:1;

    if (m_cSliceDecoder.getCtxMemSize() != NumCtx)
    {
      m_cSliceDecoder.initCtxMem(NumCtx);
      for ( UInt st = 0; st < NumCtx; st++ )
      {
        TDecSbac* ctx = NULL;
        ctx = new TDecSbac;
        ctx->init( &m_cBinCABAC );
        m_cSliceDecoder.setCtxMem( ctx, st );
      }
    }
  }

  m_apcSlicePilot->setPPS(pps);
  m_apcSlicePilot->setSPS(sps);
  pps->setSPS(sps);
#if REPN_FORMAT_IN_VPS
  pps->setNumSubstreams(pps->getEntropyCodingSyncEnabledFlag() ? ((sps->getPicHeightInLumaSamples() + sps->getMaxCUHeight() - 1) / sps->getMaxCUHeight()) * (pps->getNumColumnsMinus1() + 1) : 1);
#else
  pps->setNumSubstreams(pps->getEntropyCodingSyncEnabledFlag() ? ((sps->getPicHeightInLumaSamples() + sps->getMaxCUHeight() - 1) / sps->getMaxCUHeight()) * (pps->getNumColumnsMinus1() + 1) : 1);
#endif
  pps->setMinCuDQPSize( sps->getMaxCUWidth() >> ( pps->getMaxCuDQPDepth()) );

#if REPN_FORMAT_IN_VPS
  g_bitDepthY     = m_apcSlicePilot->getBitDepthY();
  g_bitDepthC     = m_apcSlicePilot->getBitDepthC();
#else
  g_bitDepthY     = sps->getBitDepthY();
  g_bitDepthC     = sps->getBitDepthC();
#endif
  g_uiMaxCUWidth  = sps->getMaxCUWidth();
  g_uiMaxCUHeight = sps->getMaxCUHeight();
  g_uiMaxCUDepth  = sps->getMaxCUDepth();
  g_uiAddCUDepth  = max (0, sps->getLog2MinCodingBlockSize() - (Int)sps->getQuadtreeTULog2MinSize() );

  for (Int i = 0; i < sps->getLog2DiffMaxMinCodingBlockSize(); i++)
  {
    sps->setAMPAcc( i, sps->getUseAMP() );
  }

  for (Int i = sps->getLog2DiffMaxMinCodingBlockSize(); i < sps->getMaxCUDepth(); i++)
  {
    sps->setAMPAcc( i, 0 );
  }

  m_cSAO.destroy();
#if REPN_FORMAT_IN_VPS
  m_cSAO.create( m_apcSlicePilot->getPicWidthInLumaSamples(), m_apcSlicePilot->getPicHeightInLumaSamples(), sps->getMaxCUWidth(), sps->getMaxCUHeight() );
#else
  m_cSAO.create( sps->getPicWidthInLumaSamples(), sps->getPicHeightInLumaSamples(), sps->getMaxCUWidth(), sps->getMaxCUHeight() );
#endif
  m_cLoopFilter.create( sps->getMaxCUDepth() );
}

#if SVC_EXTENSION
Bool TDecTop::xDecodeSlice(InputNALUnit &nalu, Int &iSkipFrame, Int iPOCLastDisplay, UInt& curLayerId, Bool& bNewPOC )
#else
Bool TDecTop::xDecodeSlice(InputNALUnit &nalu, Int &iSkipFrame, Int iPOCLastDisplay )
#endif
{
  TComPic*&   pcPic         = m_pcPic;
#if SVC_EXTENSION
  m_apcSlicePilot->setVPS( m_parameterSetManagerDecoder[m_layerId].getPrefetchedVPS(0) );
  m_apcSlicePilot->initSlice( nalu.m_layerId );
#else
  m_apcSlicePilot->initSlice();
#endif

  if (m_bFirstSliceInPicture)
  {
    m_uiSliceIdx     = 0;
  }
  m_apcSlicePilot->setSliceIdx(m_uiSliceIdx);
  if (!m_bFirstSliceInPicture)
  {
    m_apcSlicePilot->copySliceInfo( pcPic->getPicSym()->getSlice(m_uiSliceIdx-1) );
  }

  m_apcSlicePilot->setNalUnitType(nalu.m_nalUnitType);
  Bool nonReferenceFlag = (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TRAIL_N ||
                           m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TSA_N   ||
                           m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_STSA_N  ||
                           m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RADL_N  ||
                           m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_N);
  m_apcSlicePilot->setTemporalLayerNonReferenceFlag(nonReferenceFlag);
  
  m_apcSlicePilot->setReferenced(true); // Putting this as true ensures that picture is referenced the first time it is in an RPS
  m_apcSlicePilot->setTLayerInfo(nalu.m_temporalId);

#if SVC_EXTENSION
#if VPS_EXTN_DIRECT_REF_LAYERS && M0457_PREDICTION_INDICATIONS
  setRefLayerParams(m_apcSlicePilot->getVPS());
#endif
#if M0457_COL_PICTURE_SIGNALING
  m_apcSlicePilot->setNumMotionPredRefLayers(m_numMotionPredRefLayers);
#endif
#if M0457_IL_SAMPLE_PRED_ONLY_FLAG
  m_apcSlicePilot->setNumSamplePredRefLayers( getNumSamplePredRefLayers() );
#endif
  m_cEntropyDecoder.decodeSliceHeader (m_apcSlicePilot, &m_parameterSetManagerDecoder[m_layerId]);
#else
  m_cEntropyDecoder.decodeSliceHeader (m_apcSlicePilot, &m_parameterSetManagerDecoder);
#endif

#if HM12_RANDOM_ACCESS
  // set POC for dependent slices in skipped pictures
  if(m_apcSlicePilot->getDependentSliceSegmentFlag() && m_prevSliceSkipped) 
  {
    m_apcSlicePilot->setPOC(m_skippedPOC);
  }
#endif

  // Skip pictures due to random access
  if (isRandomAccessSkipPicture(iSkipFrame, iPOCLastDisplay))
  {
#if HM12_RANDOM_ACCESS
    m_prevSliceSkipped = true;
    m_skippedPOC = m_apcSlicePilot->getPOC();
#endif
    return false;
  }
  // Skip TFD pictures associated with BLA/BLANT pictures
  if (isSkipPictureForBLA(iPOCLastDisplay))
  {
#if HM12_RANDOM_ACCESS
    m_prevSliceSkipped = true;
    m_skippedPOC = m_apcSlicePilot->getPOC();
#endif
    return false;
  }

#if HM12_RANDOM_ACCESS
  // clear previous slice skipped flag
  m_prevSliceSkipped = false;
#endif

  // exit when a new picture is found
#if SVC_EXTENSION
  bNewPOC = (m_apcSlicePilot->getPOC()!= m_prevPOC);
  if (m_apcSlicePilot->isNextSlice() && (bNewPOC || m_layerId!=m_uiPrevLayerId) && !m_bFirstSliceInSequence )
  {
    m_prevPOC = m_apcSlicePilot->getPOC();
    curLayerId = m_uiPrevLayerId; 
    m_uiPrevLayerId = m_layerId;
    return true;
  }
#else
  //we should only get a different poc for a new picture (with CTU address==0)
  if (m_apcSlicePilot->isNextSlice() && m_apcSlicePilot->getPOC()!=m_prevPOC && !m_bFirstSliceInSequence && (!m_apcSlicePilot->getSliceCurStartCUAddr()==0))
  {
    printf ("Warning, the first slice of a picture might have been lost!\n");
  }
  // exit when a new picture is found
  if (m_apcSlicePilot->isNextSlice() && (m_apcSlicePilot->getSliceCurStartCUAddr() == 0 && !m_bFirstSliceInPicture) && !m_bFirstSliceInSequence )
  {
    if (m_prevPOC >= m_pocRandomAccess)
    {
      m_prevPOC = m_apcSlicePilot->getPOC();
      return true;
    }
    m_prevPOC = m_apcSlicePilot->getPOC();
  }
#endif
  // actual decoding starts here
  xActivateParameterSets();
#if 0 // N0147_IRAP_ALIGN_FLAG Disabled for now!
  //When cross_layer_irap_aligned_flag is equal to 0, num_extra_slice_header_bits >=1 
  if( m_layerId > 0 && m_apcSlicePilot->getVPS()->getCrossLayerIrapAlignFlag())
    assert( m_apcSlicePilot->getPPS()->getNumExtraSliceHeaderBits() > 0);
  //When cross_layer_irap_aligned_flag is equal to 1, the value of poc_reset_flag shall be equal to 0  
  // to be added after poc_reset_flag is integrated.
#endif 

#if REPN_FORMAT_IN_VPS
  // Initialize ILRP if needed, only for the current layer  
  // ILRP intialization should go along with activation of parameters sets, 
  // although activation of parameter sets itself need not be done for each and every slice!!!
  xInitILRP(m_apcSlicePilot);
#endif
  if (m_apcSlicePilot->isNextSlice()) 
  {
    m_prevPOC = m_apcSlicePilot->getPOC();
#if SVC_EXTENSION
    curLayerId = m_layerId;
    m_uiPrevLayerId = m_layerId;
#endif
  }
  m_bFirstSliceInSequence = false;
  //detect lost reference picture and insert copy of earlier frame.
  Int lostPoc;
  while((lostPoc=m_apcSlicePilot->checkThatAllRefPicsAreAvailable(m_cListPic, m_apcSlicePilot->getRPS(), true, m_pocRandomAccess)) > 0)
  {
    xCreateLostPicture(lostPoc-1);
  }
  if (m_bFirstSliceInPicture)
  {
#if AVC_BASE
    if( m_layerId == 1 && m_parameterSetManagerDecoder[0].getPrefetchedVPS(0)->getAvcBaseLayerFlag() )
    {
      TComPic* pBLPic = (*m_ppcTDecTop[0]->getListPic()->begin());
      fstream* pFile  = m_ppcTDecTop[0]->getBLReconFile();
      UInt uiWidth    = pBLPic->getPicYuvRec()->getWidth();
      UInt uiHeight   = pBLPic->getPicYuvRec()->getHeight();

      if( pFile->good() )
      {
        UInt64 uiPos = (UInt64) m_apcSlicePilot->getPOC() * uiWidth * uiHeight * 3 / 2;

        pFile->seekg((UInt)uiPos, ios::beg );

        Pel* pPel = pBLPic->getPicYuvRec()->getLumaAddr();
        UInt uiStride = pBLPic->getPicYuvRec()->getStride();
        for( Int i = 0; i < uiHeight; i++ )
        {
          for( Int j = 0; j < uiWidth; j++ )
          {
            pPel[j] = pFile->get();
          }
          pPel += uiStride;
        }

        pPel = pBLPic->getPicYuvRec()->getCbAddr();
        uiStride = pBLPic->getPicYuvRec()->getCStride();
        for( Int i = 0; i < uiHeight/2; i++ )
        {
          for( Int j = 0; j < uiWidth/2; j++ )
          {
            pPel[j] = pFile->get();
          }
          pPel += uiStride;
        }

        pPel = pBLPic->getPicYuvRec()->getCrAddr();
        uiStride = pBLPic->getPicYuvRec()->getCStride();
        for( Int i = 0; i < uiHeight/2; i++ )
        {
          for( Int j = 0; j < uiWidth/2; j++ )
          {
            pPel[j] = pFile->get();
          }
          pPel += uiStride;
        }
      }
    }
#endif

    // Buffer initialize for prediction.
    m_cPrediction.initTempBuff();
    m_apcSlicePilot->applyReferencePictureSet(m_cListPic, m_apcSlicePilot->getRPS());
    //  Get a new picture buffer
    xGetNewPicBuffer (m_apcSlicePilot, pcPic);

    // transfer any SEI messages that have been received to the picture
    pcPic->setSEIs(m_SEIs);
    m_SEIs.clear();

    // Recursive structure
    m_cCuDecoder.create ( g_uiMaxCUDepth, g_uiMaxCUWidth, g_uiMaxCUHeight );
#if SVC_EXTENSION
    m_cCuDecoder.init   ( m_ppcTDecTop,&m_cEntropyDecoder, &m_cTrQuant, &m_cPrediction, curLayerId );
#else
    m_cCuDecoder.init   ( &m_cEntropyDecoder, &m_cTrQuant, &m_cPrediction );
#endif
    m_cTrQuant.init     ( g_uiMaxCUWidth, g_uiMaxCUHeight, m_apcSlicePilot->getSPS()->getMaxTrSize());

    m_cSliceDecoder.create();
  }
  else
  {
    // Check if any new SEI has arrived
    if(!m_SEIs.empty())
    {
      // Currently only decoding Unit SEI message occurring between VCL NALUs copied
      SEIMessages &picSEI = pcPic->getSEIs();
      SEIMessages decodingUnitInfos = extractSeisByType (m_SEIs, SEI::DECODING_UNIT_INFO);
      picSEI.insert(picSEI.end(), decodingUnitInfos.begin(), decodingUnitInfos.end());
      deleteSEIs(m_SEIs);
    }
  }
  
  //  Set picture slice pointer
  TComSlice*  pcSlice = m_apcSlicePilot;
  Bool bNextSlice     = pcSlice->isNextSlice();

  UInt uiCummulativeTileWidth;
  UInt uiCummulativeTileHeight;
  UInt i, j, p;

  //set NumColumnsMins1 and NumRowsMinus1
  pcPic->getPicSym()->setNumColumnsMinus1( pcSlice->getPPS()->getNumColumnsMinus1() );
  pcPic->getPicSym()->setNumRowsMinus1( pcSlice->getPPS()->getNumRowsMinus1() );

  //create the TComTileArray
  pcPic->getPicSym()->xCreateTComTileArray();

  if( pcSlice->getPPS()->getUniformSpacingFlag() )
  {
    //set the width for each tile
    for(j=0; j < pcPic->getPicSym()->getNumRowsMinus1()+1; j++)
    {
      for(p=0; p < pcPic->getPicSym()->getNumColumnsMinus1()+1; p++)
      {
        pcPic->getPicSym()->getTComTile( j * (pcPic->getPicSym()->getNumColumnsMinus1()+1) + p )->
          setTileWidth( (p+1)*pcPic->getPicSym()->getFrameWidthInCU()/(pcPic->getPicSym()->getNumColumnsMinus1()+1) 
          - (p*pcPic->getPicSym()->getFrameWidthInCU())/(pcPic->getPicSym()->getNumColumnsMinus1()+1) );
      }
    }

    //set the height for each tile
    for(j=0; j < pcPic->getPicSym()->getNumColumnsMinus1()+1; j++)
    {
      for(p=0; p < pcPic->getPicSym()->getNumRowsMinus1()+1; p++)
      {
        pcPic->getPicSym()->getTComTile( p * (pcPic->getPicSym()->getNumColumnsMinus1()+1) + j )->
          setTileHeight( (p+1)*pcPic->getPicSym()->getFrameHeightInCU()/(pcPic->getPicSym()->getNumRowsMinus1()+1) 
          - (p*pcPic->getPicSym()->getFrameHeightInCU())/(pcPic->getPicSym()->getNumRowsMinus1()+1) );   
      }
    }
  }
  else
  {
    //set the width for each tile
    for(j=0; j < pcSlice->getPPS()->getNumRowsMinus1()+1; j++)
    {
      uiCummulativeTileWidth = 0;
      for(i=0; i < pcSlice->getPPS()->getNumColumnsMinus1(); i++)
      {
        pcPic->getPicSym()->getTComTile(j * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + i)->setTileWidth( pcSlice->getPPS()->getColumnWidth(i) );
        uiCummulativeTileWidth += pcSlice->getPPS()->getColumnWidth(i);
      }
      pcPic->getPicSym()->getTComTile(j * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + i)->setTileWidth( pcPic->getPicSym()->getFrameWidthInCU()-uiCummulativeTileWidth );
    }

    //set the height for each tile
    for(j=0; j < pcSlice->getPPS()->getNumColumnsMinus1()+1; j++)
    {
      uiCummulativeTileHeight = 0;
      for(i=0; i < pcSlice->getPPS()->getNumRowsMinus1(); i++)
      { 
        pcPic->getPicSym()->getTComTile(i * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + j)->setTileHeight( pcSlice->getPPS()->getRowHeight(i) );
        uiCummulativeTileHeight += pcSlice->getPPS()->getRowHeight(i);
      }
      pcPic->getPicSym()->getTComTile(i * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + j)->setTileHeight( pcPic->getPicSym()->getFrameHeightInCU()-uiCummulativeTileHeight );
    }
  }

  pcPic->getPicSym()->xInitTiles();

  //generate the Coding Order Map and Inverse Coding Order Map
  UInt uiEncCUAddr;
  for(i=0, uiEncCUAddr=0; i<pcPic->getPicSym()->getNumberOfCUsInFrame(); i++, uiEncCUAddr = pcPic->getPicSym()->xCalculateNxtCUAddr(uiEncCUAddr))
  {
    pcPic->getPicSym()->setCUOrderMap(i, uiEncCUAddr);
    pcPic->getPicSym()->setInverseCUOrderMap(uiEncCUAddr, i);
  }
  pcPic->getPicSym()->setCUOrderMap(pcPic->getPicSym()->getNumberOfCUsInFrame(), pcPic->getPicSym()->getNumberOfCUsInFrame());
  pcPic->getPicSym()->setInverseCUOrderMap(pcPic->getPicSym()->getNumberOfCUsInFrame(), pcPic->getPicSym()->getNumberOfCUsInFrame());

  //convert the start and end CU addresses of the slice and dependent slice into encoding order
  pcSlice->setSliceSegmentCurStartCUAddr( pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceSegmentCurStartCUAddr()) );
  pcSlice->setSliceSegmentCurEndCUAddr( pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceSegmentCurEndCUAddr()) );
  if(pcSlice->isNextSlice())
  {
    pcSlice->setSliceCurStartCUAddr(pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceCurStartCUAddr()));
    pcSlice->setSliceCurEndCUAddr(pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceCurEndCUAddr()));
  }

  if (m_bFirstSliceInPicture) 
  {
    if(pcPic->getNumAllocatedSlice() != 1)
    {
      pcPic->clearSliceBuffer();
    }
  }
  else
  {
    pcPic->allocateNewSlice();
  }
  assert(pcPic->getNumAllocatedSlice() == (m_uiSliceIdx + 1));
  m_apcSlicePilot = pcPic->getPicSym()->getSlice(m_uiSliceIdx); 
  pcPic->getPicSym()->setSlice(pcSlice, m_uiSliceIdx);

  pcPic->setTLayer(nalu.m_temporalId);

#if SVC_EXTENSION
  pcPic->setLayerId(nalu.m_layerId);
  pcSlice->setLayerId(nalu.m_layerId);
#endif

  if (bNextSlice)
  {
    pcSlice->checkCRA(pcSlice->getRPS(), m_pocCRA, m_prevRAPisBLA, m_cListPic );
    // Set reference list
#if SVC_EXTENSION
    if (m_layerId == 0)
#endif
#if FIX1071
    pcSlice->setRefPicList( m_cListPic, true );
#else
    pcSlice->setRefPicList( m_cListPic );
#endif

#if SVC_EXTENSION   
    if(m_layerId > 0)
    {
      for( i = 0; i < pcSlice->getActiveNumILRRefIdx(); i++ )
      {
        UInt refLayerIdc = pcSlice->getInterLayerPredLayerIdc(i);
#if AVC_BASE
        if( pcSlice->getVPS()->getRefLayerId( m_layerId, refLayerIdc ) == 0 && m_parameterSetManagerDecoder[0].getActiveVPS()->getAvcBaseLayerFlag() )
        {
          pcSlice->setBaseColPic ( refLayerIdc, *m_ppcTDecTop[0]->getListPic()->begin() );
#if AVC_SYNTAX
          TComPic* pBLPic = pcSlice->getBaseColPic(refLayerIdc);
          if( pcSlice->getPOC() == 0 )
          {
            // initialize partition order.
            UInt* piTmp = &g_auiZscanToRaster[0];
            initZscanToRaster( pBLPic->getPicSym()->getMaxDepth() + 1, 1, 0, piTmp );
            initRasterToZscan( pBLPic->getPicSym()->getMaxCUWidth(), pBLPic->getPicSym()->getMaxCUHeight(), pBLPic->getPicSym()->getMaxDepth() + 1 );
          }      
          pBLPic->getSlice( 0 )->initBaseLayerRPL( pcSlice );
          pBLPic->readBLSyntax( m_ppcTDecTop[0]->getBLSyntaxFile(), SYNTAX_BYTES );
#endif
        }
        else
        {
#if VPS_EXTN_DIRECT_REF_LAYERS
          TDecTop *pcTDecTop = (TDecTop *)getRefLayerDec( refLayerIdc );
#else
          TDecTop *pcTDecTop = (TDecTop *)getLayerDec( m_layerId-1 );
#endif
          TComList<TComPic*> *cListPic = pcTDecTop->getListPic();
          pcSlice->setBaseColPic ( *cListPic, refLayerIdc );
        }
#else
#if VPS_EXTN_DIRECT_REF_LAYERS
        TDecTop *pcTDecTop = (TDecTop *)getRefLayerDec( refLayerIdc );
#else
        TDecTop *pcTDecTop = (TDecTop *)getLayerDec( m_layerId-1 );
#endif
        TComList<TComPic*> *cListPic = pcTDecTop->getListPic();
        pcSlice->setBaseColPic ( *cListPic, refLayerIdc );
#endif

#if SCALED_REF_LAYER_OFFSETS
        const Window &scalEL = pcSlice->getSPS()->getScaledRefLayerWindow(refLayerIdc);


        Int widthBL   = pcSlice->getBaseColPic(refLayerIdc)->getPicYuvRec()->getWidth();
        Int heightBL  = pcSlice->getBaseColPic(refLayerIdc)->getPicYuvRec()->getHeight();

        Int widthEL   = pcPic->getPicYuvRec()->getWidth()  - scalEL.getWindowLeftOffset() - scalEL.getWindowRightOffset();
        Int heightEL  = pcPic->getPicYuvRec()->getHeight() - scalEL.getWindowTopOffset()  - scalEL.getWindowBottomOffset();
#else
        const Window &confBL = pcSlice->getBaseColPic()->getPicYuvRec()->getConformanceWindow();
        const Window &confEL = pcPic->getPicYuvRec()->getConformanceWindow();

        Int widthBL   = pcSlice->getBaseColPic()->getPicYuvRec()->getWidth () - confBL.getWindowLeftOffset() - confBL.getWindowRightOffset();
        Int heightBL  = pcSlice->getBaseColPic()->getPicYuvRec()->getHeight() - confBL.getWindowTopOffset() - confBL.getWindowBottomOffset();

        Int widthEL   = pcPic->getPicYuvRec()->getWidth() - confEL.getWindowLeftOffset() - confEL.getWindowRightOffset();
        Int heightEL  = pcPic->getPicYuvRec()->getHeight() - confEL.getWindowTopOffset() - confEL.getWindowBottomOffset();
#endif
        g_mvScalingFactor[refLayerIdc][0] = widthEL  == widthBL  ? 4096 : Clip3(-4096, 4095, ((widthEL  << 8) + (widthBL  >> 1)) / widthBL);
        g_mvScalingFactor[refLayerIdc][1] = heightEL == heightBL ? 4096 : Clip3(-4096, 4095, ((heightEL << 8) + (heightBL >> 1)) / heightBL);

        g_posScalingFactor[refLayerIdc][0] = ((widthBL  << 16) + (widthEL  >> 1)) / widthEL;
        g_posScalingFactor[refLayerIdc][1] = ((heightBL << 16) + (heightEL >> 1)) / heightEL;

#if SVC_UPSAMPLING
        if( pcPic->isSpatialEnhLayer(refLayerIdc) )
        {    
#if SCALED_REF_LAYER_OFFSETS
          m_cPrediction.upsampleBasePic( refLayerIdc, pcPic->getFullPelBaseRec(refLayerIdc), pcSlice->getBaseColPic(refLayerIdc)->getPicYuvRec(), pcPic->getPicYuvRec(), pcSlice->getSPS()->getScaledRefLayerWindow(refLayerIdc) );
#else
          m_cPrediction.upsampleBasePic( refLayerIdc, pcPic->getFullPelBaseRec(refLayerIdc), pcSlice->getBaseColPic(refLayerIdc)->getPicYuvRec(), pcPic->getPicYuvRec() );
#endif
        }
        else
        {
          pcPic->setFullPelBaseRec( refLayerIdc, pcSlice->getBaseColPic(refLayerIdc)->getPicYuvRec() );
        }
        pcSlice->setFullPelBaseRec ( refLayerIdc, pcPic->getFullPelBaseRec(refLayerIdc) );
#endif
      }
    }

    if( m_layerId > 0 && pcSlice->getActiveNumILRRefIdx() )
    {
      setILRPic(pcPic);
#if REF_IDX_MFM
#if M0457_COL_PICTURE_SIGNALING
      if( pcSlice->getMFMEnabledFlag() )
#else
      if( pcSlice->getSPS()->getMFMEnabledFlag() )
#endif
      {
        pcSlice->setRefPOCListILP(m_ppcTDecTop[m_layerId]->m_cIlpPic, pcSlice->getBaseColPic());
#if M0457_COL_PICTURE_SIGNALING && !REMOVE_COL_PICTURE_SIGNALING
        pcSlice->setMotionPredIlp(getMotionPredIlp(pcSlice));
#endif
      }
      pcSlice->setRefPicList( m_cListPic, false, m_cIlpPic);
    }
#if M0040_ADAPTIVE_RESOLUTION_CHANGE
    else if ( m_layerId > 0 )
    {
      pcSlice->setRefPicList( m_cListPic, false, NULL);
    }
#endif
#endif

#endif //SVC_EXTENSION

#if N0147_IRAP_ALIGN_FLAG
    if(  m_layerId > 0 && pcSlice->getVPS()->getCrossLayerIrapAlignFlag())
    {
      if(pcSlice->isIRAP())
      {
        for(Int depedentLayerId = 0; depedentLayerId < pcSlice->getVPS()->getNumDirectRefLayers(m_layerId); depedentLayerId++)
          assert(pcSlice->getNalUnitType() == pcSlice->getBaseColPic(depedentLayerId)->getSlice(0)->getNalUnitType());
      }
    }
#endif 
    // For generalized B
    // note: maybe not existed case (always L0 is copied to L1 if L1 is empty)
    if (pcSlice->isInterB() && pcSlice->getNumRefIdx(REF_PIC_LIST_1) == 0)
    {
      Int iNumRefIdx = pcSlice->getNumRefIdx(REF_PIC_LIST_0);
      pcSlice->setNumRefIdx        ( REF_PIC_LIST_1, iNumRefIdx );

      for (Int iRefIdx = 0; iRefIdx < iNumRefIdx; iRefIdx++)
      {
        pcSlice->setRefPic(pcSlice->getRefPic(REF_PIC_LIST_0, iRefIdx), REF_PIC_LIST_1, iRefIdx);
      }
    }
    if (!pcSlice->isIntra())
    {
      Bool bLowDelay = true;
      Int  iCurrPOC  = pcSlice->getPOC();
      Int iRefIdx = 0;

      for (iRefIdx = 0; iRefIdx < pcSlice->getNumRefIdx(REF_PIC_LIST_0) && bLowDelay; iRefIdx++)
      {
        if ( pcSlice->getRefPic(REF_PIC_LIST_0, iRefIdx)->getPOC() > iCurrPOC )
        {
          bLowDelay = false;
        }
      }
      if (pcSlice->isInterB())
      {
        for (iRefIdx = 0; iRefIdx < pcSlice->getNumRefIdx(REF_PIC_LIST_1) && bLowDelay; iRefIdx++)
        {
          if ( pcSlice->getRefPic(REF_PIC_LIST_1, iRefIdx)->getPOC() > iCurrPOC )
          {
            bLowDelay = false;
          }
        }        
      }

      pcSlice->setCheckLDC(bLowDelay);            
    }

    //---------------
    pcSlice->setRefPOCList();
  }

  pcPic->setCurrSliceIdx(m_uiSliceIdx);
  if(pcSlice->getSPS()->getScalingListFlag())
  {
    pcSlice->setScalingList ( pcSlice->getSPS()->getScalingList()  );
    if(pcSlice->getPPS()->getScalingListPresentFlag())
    {
      pcSlice->setScalingList ( pcSlice->getPPS()->getScalingList()  );
    }
    pcSlice->getScalingList()->setUseTransformSkip(pcSlice->getPPS()->getUseTransformSkip());
    if(!pcSlice->getPPS()->getScalingListPresentFlag() && !pcSlice->getSPS()->getScalingListPresentFlag())
    {
      pcSlice->setDefaultScalingList();
    }
    m_cTrQuant.setScalingListDec(pcSlice->getScalingList());
    m_cTrQuant.setUseScalingList(true);
  }
  else
  {
    m_cTrQuant.setFlatScalingList();
    m_cTrQuant.setUseScalingList(false);
  }

  //  Decode a picture
  m_cGopDecoder.decompressSlice(nalu.m_Bitstream, pcPic);

  m_bFirstSliceInPicture = false;
  m_uiSliceIdx++;

  return false;
}

Void TDecTop::xDecodeVPS()
{
  TComVPS* vps = new TComVPS();
  
  m_cEntropyDecoder.decodeVPS( vps );
#if SVC_EXTENSION
  m_parameterSetManagerDecoder[0].storePrefetchedVPS(vps);
#else
  m_parameterSetManagerDecoder.storePrefetchedVPS(vps);  
#endif
}

Void TDecTop::xDecodeSPS()
{
  TComSPS* sps = new TComSPS();
#if SVC_EXTENSION
  sps->setLayerId(m_layerId);
#endif
#if SPS_SUB_LAYER_INFO
  m_cEntropyDecoder.decodeSPS( sps, &m_parameterSetManagerDecoder[0] );
#else
  m_cEntropyDecoder.decodeSPS( sps );
#endif
#if SVC_EXTENSION
  m_parameterSetManagerDecoder[m_layerId].storePrefetchedSPS(sps);
#else
  m_parameterSetManagerDecoder.storePrefetchedSPS(sps);
#endif
#if SVC_EXTENSION
#if !REPN_FORMAT_IN_VPS   // ILRP can only be initialized at activation  
  if(m_numLayer>0)
  {
    xInitILRP(sps);
  }
#endif
#endif
}

Void TDecTop::xDecodePPS()
{
  TComPPS* pps = new TComPPS();
  m_cEntropyDecoder.decodePPS( pps );
#if SVC_EXTENSION
  m_parameterSetManagerDecoder[m_layerId].storePrefetchedPPS( pps );
#else
  m_parameterSetManagerDecoder.storePrefetchedPPS( pps );
#endif

  if( pps->getDependentSliceSegmentsEnabledFlag() )
  {
    Int NumCtx = pps->getEntropyCodingSyncEnabledFlag()?2:1;
    m_cSliceDecoder.initCtxMem(NumCtx);
    for ( UInt st = 0; st < NumCtx; st++ )
    {
      TDecSbac* ctx = NULL;
      ctx = new TDecSbac;
      ctx->init( &m_cBinCABAC );
      m_cSliceDecoder.setCtxMem( ctx, st );
    }
  }
}

Void TDecTop::xDecodeSEI( TComInputBitstream* bs, const NalUnitType nalUnitType )
{
#if SVC_EXTENSION
  if(nalUnitType == NAL_UNIT_SUFFIX_SEI)
  {
#if RANDOM_ACCESS_SEI_FIX
    if (m_prevSliceSkipped) // No need to decode SEI messages of a skipped access unit
    {
      return;
    }
#endif
#if M0043_LAYERS_PRESENT_SEI
    m_seiReader.parseSEImessage( bs, m_pcPic->getSEIs(), nalUnitType, m_parameterSetManagerDecoder[m_layerId].getActiveVPS(), m_parameterSetManagerDecoder[m_layerId].getActiveSPS() );
#else
    m_seiReader.parseSEImessage( bs, m_pcPic->getSEIs(), nalUnitType, m_parameterSetManagerDecoder[m_layerId].getActiveSPS() );
#endif
  }
  else
  {
#if M0043_LAYERS_PRESENT_SEI
    m_seiReader.parseSEImessage( bs, m_SEIs, nalUnitType, m_parameterSetManagerDecoder[m_layerId].getActiveVPS(), m_parameterSetManagerDecoder[m_layerId].getActiveSPS() );
#else
    m_seiReader.parseSEImessage( bs, m_SEIs, nalUnitType, m_parameterSetManagerDecoder[m_layerId].getActiveSPS() );
#endif
    SEIMessages activeParamSets = getSeisByType(m_SEIs, SEI::ACTIVE_PARAMETER_SETS);
    if (activeParamSets.size()>0)
    {
      SEIActiveParameterSets *seiAps = (SEIActiveParameterSets*)(*activeParamSets.begin());
      m_parameterSetManagerDecoder[m_layerId].applyPrefetchedPS();
      assert(seiAps->activeSeqParamSetId.size()>0);
      if (! m_parameterSetManagerDecoder[m_layerId].activateSPSWithSEI(seiAps->activeSeqParamSetId[0] ))
      {
        printf ("Warning SPS activation with Active parameter set SEI failed");
      }
    }
  }
#else
  if(nalUnitType == NAL_UNIT_SUFFIX_SEI)
  {
#if M0043_LAYERS_PRESENT_SEI
    m_seiReader.parseSEImessage( bs, m_pcPic->getSEIs(), nalUnitType, m_parameterSetManagerDecoder.getActiveVPS(), m_parameterSetManagerDecoder.getActiveSPS() );
#else
    m_seiReader.parseSEImessage( bs, m_pcPic->getSEIs(), nalUnitType, m_parameterSetManagerDecoder.getActiveSPS() );
#endif
  }
  else
  {
#if M0043_LAYERS_PRESENT_SEI
    m_seiReader.parseSEImessage( bs, m_SEIs, nalUnitType, m_parameterSetManagerDecoder.getActiveVPS(), m_parameterSetManagerDecoder.getActiveSPS() );
#else
    m_seiReader.parseSEImessage( bs, m_SEIs, nalUnitType, m_parameterSetManagerDecoder.getActiveSPS() );
#endif
    SEIMessages activeParamSets = getSeisByType(m_SEIs, SEI::ACTIVE_PARAMETER_SETS);
    if (activeParamSets.size()>0)
    {
      SEIActiveParameterSets *seiAps = (SEIActiveParameterSets*)(*activeParamSets.begin());
      m_parameterSetManagerDecoder.applyPrefetchedPS();
      assert(seiAps->activeSeqParamSetId.size()>0);
      if (! m_parameterSetManagerDecoder.activateSPSWithSEI(seiAps->activeSeqParamSetId[0] ))
      {
        printf ("Warning SPS activation with Active parameter set SEI failed");
      }
    }
  }
#endif
}

#if SVC_EXTENSION
Bool TDecTop::decode(InputNALUnit& nalu, Int& iSkipFrame, Int& iPOCLastDisplay, UInt& curLayerId, Bool& bNewPOC)
#else
Bool TDecTop::decode(InputNALUnit& nalu, Int& iSkipFrame, Int& iPOCLastDisplay)
#endif
{
  // Initialize entropy decoder
  m_cEntropyDecoder.setEntropyDecoder (&m_cCavlcDecoder);
  m_cEntropyDecoder.setBitstream      (nalu.m_Bitstream);

  switch (nalu.m_nalUnitType)
  {
    case NAL_UNIT_VPS:
#if VPS_NUH_LAYER_ID
      assert( nalu.m_layerId == 0 ); // Non-conforming bitstream. The value of nuh_layer_id of VPS NAL unit shall be equal to 0.
#endif
      xDecodeVPS();
#if AVC_BASE
      if( m_parameterSetManagerDecoder[0].getPrefetchedVPS(0)->getAvcBaseLayerFlag() )
      {
        if( !m_ppcTDecTop[0]->getBLReconFile()->good() )
        {
          printf( "Base layer YUV input reading error\n" );
          exit(EXIT_FAILURE);
        }        
#if AVC_SYNTAX
        if( !m_ppcTDecTop[0]->getBLSyntaxFile()->good() )
        {
          printf( "Base layer syntax input reading error\n" );
          exit(EXIT_FAILURE);
        }
#endif
      }
      else
      {
        TComList<TComPic*> *cListPic = m_ppcTDecTop[0]->getListPic();
        cListPic->clear();
      }
#endif
      return false;
      
    case NAL_UNIT_SPS:
      xDecodeSPS();
#if AVC_BASE
      if( m_parameterSetManagerDecoder[0].getPrefetchedVPS(0)->getAvcBaseLayerFlag() )
      {
        TComPic* pBLPic = (*m_ppcTDecTop[0]->getListPic()->begin());
        if( nalu.m_layerId == 1 && pBLPic->getPicYuvRec() == NULL )
        {
          // using EL SPS with spsId = 1
          TComSPS* sps = m_parameterSetManagerDecoder[nalu.m_layerId].getPrefetchedSPS(1);
          Int  numReorderPics[MAX_TLAYER];
          Window &conformanceWindow = sps->getConformanceWindow();
          Window defaultDisplayWindow = sps->getVuiParametersPresentFlag() ? sps->getVuiParameters()->getDefaultDisplayWindow() : Window();
#if SVC_UPSAMPLING
#if AVC_SYNTAX

          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), sps->getMaxCUWidth(), sps->getMaxCUHeight(), sps->getMaxCUDepth(), conformanceWindow, defaultDisplayWindow, numReorderPics, sps, true);
#else
          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), sps->getMaxCUWidth(), sps->getMaxCUHeight(), sps->getMaxCUDepth(), conformanceWindow, defaultDisplayWindow, numReorderPics, NULL, true);
#endif
#else
          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), sps->getMaxCUWidth(), sps->getMaxCUHeight(), sps->getMaxCUDepth(), onformanceWindow, defaultDisplayWindow, numReorderPics, true);
#endif
        }
      }
#endif
      return false;

    case NAL_UNIT_PPS:
      xDecodePPS();
      return false;
      
    case NAL_UNIT_PREFIX_SEI:
    case NAL_UNIT_SUFFIX_SEI:
      xDecodeSEI( nalu.m_Bitstream, nalu.m_nalUnitType );
      return false;

    case NAL_UNIT_CODED_SLICE_TRAIL_R:
    case NAL_UNIT_CODED_SLICE_TRAIL_N:
    case NAL_UNIT_CODED_SLICE_TLA_R:
    case NAL_UNIT_CODED_SLICE_TSA_N:
    case NAL_UNIT_CODED_SLICE_STSA_R:
    case NAL_UNIT_CODED_SLICE_STSA_N:
    case NAL_UNIT_CODED_SLICE_BLA_W_LP:
    case NAL_UNIT_CODED_SLICE_BLA_W_RADL:
    case NAL_UNIT_CODED_SLICE_BLA_N_LP:
    case NAL_UNIT_CODED_SLICE_IDR_W_RADL:
    case NAL_UNIT_CODED_SLICE_IDR_N_LP:
    case NAL_UNIT_CODED_SLICE_CRA:
    case NAL_UNIT_CODED_SLICE_RADL_N:
    case NAL_UNIT_CODED_SLICE_RADL_R:
    case NAL_UNIT_CODED_SLICE_RASL_N:
    case NAL_UNIT_CODED_SLICE_RASL_R:
#if SVC_EXTENSION
      return xDecodeSlice(nalu, iSkipFrame, iPOCLastDisplay, curLayerId, bNewPOC);
#else
      return xDecodeSlice(nalu, iSkipFrame, iPOCLastDisplay);
#endif
      break;
    default:
      assert (1);
  }

  return false;
}

/** Function for checking if picture should be skipped because of association with a previous BLA picture
 * \param iPOCLastDisplay POC of last picture displayed
 * \returns true if the picture should be skipped
 * This function skips all TFD pictures that follow a BLA picture
 * in decoding order and precede it in output order.
 */
Bool TDecTop::isSkipPictureForBLA(Int& iPOCLastDisplay)
{
  if (m_prevRAPisBLA && m_apcSlicePilot->getPOC() < m_pocCRA && (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_R || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_N))
  {
    iPOCLastDisplay++;
    return true;
  }
  return false;
}

/** Function for checking if picture should be skipped because of random access
 * \param iSkipFrame skip frame counter
 * \param iPOCLastDisplay POC of last picture displayed
 * \returns true if the picture shold be skipped in the random access.
 * This function checks the skipping of pictures in the case of -s option random access.
 * All pictures prior to the random access point indicated by the counter iSkipFrame are skipped.
 * It also checks the type of Nal unit type at the random access point.
 * If the random access point is CRA/CRANT/BLA/BLANT, TFD pictures with POC less than the POC of the random access point are skipped.
 * If the random access point is IDR all pictures after the random access point are decoded.
 * If the random access point is none of the above, a warning is issues, and decoding of pictures with POC 
 * equal to or greater than the random access point POC is attempted. For non IDR/CRA/BLA random 
 * access point there is no guarantee that the decoder will not crash.
 */
Bool TDecTop::isRandomAccessSkipPicture(Int& iSkipFrame,  Int& iPOCLastDisplay)
{
  if (iSkipFrame) 
  {
    iSkipFrame--;   // decrement the counter
    return true;
  }
  else if (m_pocRandomAccess == MAX_INT) // start of random access point, m_pocRandomAccess has not been set yet.
  {
    if (   m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA
        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_LP
        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_N_LP
        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_W_RADL )
    {
      // set the POC random access since we need to skip the reordered pictures in the case of CRA/CRANT/BLA/BLANT.
      m_pocRandomAccess = m_apcSlicePilot->getPOC();
    }
    else if ( m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_W_RADL || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP )
    {
      m_pocRandomAccess = -MAX_INT; // no need to skip the reordered pictures in IDR, they are decodable.
    }
    else 
    {
      static Bool warningMessage = false;
      if(!warningMessage)
      {
        printf("\nWarning: this is not a valid random access point and the data is discarded until the first CRA picture");
        warningMessage = true;
      }
      return true;
    }
  }
  // skip the reordered pictures, if necessary
  else if (m_apcSlicePilot->getPOC() < m_pocRandomAccess && (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_R || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_RASL_N))
  {
    iPOCLastDisplay++;
    return true;
  }
  // if we reach here, then the picture is not skipped.
  return false; 
}

#if VPS_EXTN_DIRECT_REF_LAYERS
TDecTop* TDecTop::getRefLayerDec( UInt refLayerIdc )
{
  TComVPS* vps = m_parameterSetManagerDecoder[0].getActiveVPS();
  if( vps->getNumDirectRefLayers( m_layerId ) <= 0 )
  {
    return (TDecTop *)getLayerDec( 0 );
  }
  
  return (TDecTop *)getLayerDec( vps->getRefLayerId( m_layerId, refLayerIdc ) );
}
#endif

#if VPS_EXTN_DIRECT_REF_LAYERS && M0457_PREDICTION_INDICATIONS

Void TDecTop::setRefLayerParams( TComVPS* vps )
{
  for(UInt layer = 0; layer < m_numLayer; layer++)
  {
    TDecTop *decTop = (TDecTop *)getLayerDec(layer);
    decTop->setNumSamplePredRefLayers(0);
    decTop->setNumMotionPredRefLayers(0);
    decTop->setNumDirectRefLayers(0);
    for(Int i = 0; i < MAX_VPS_LAYER_ID_PLUS1; i++)
    {
      decTop->setSamplePredEnabledFlag(i, false);
      decTop->setMotionPredEnabledFlag(i, false);
      decTop->setSamplePredRefLayerId(i, 0);
      decTop->setMotionPredRefLayerId(i, 0);
    }
    for(Int j = 0; j < layer; j++)
    {
      if (vps->getDirectDependencyFlag(layer, j))
      {
        decTop->setRefLayerId(decTop->getNumDirectRefLayers(), vps->getLayerIdInNuh(layer));
        decTop->setNumDirectRefLayers(decTop->getNumDirectRefLayers() + 1);

        Int samplePredEnabledFlag = (vps->getDirectDependencyType(layer, j) + 1) & 1;
        decTop->setSamplePredEnabledFlag(j, samplePredEnabledFlag == 1 ? true : false);
        decTop->setNumSamplePredRefLayers(decTop->getNumSamplePredRefLayers() + samplePredEnabledFlag);

        Int motionPredEnabledFlag = ((vps->getDirectDependencyType(layer, j) + 1) & 2) >> 1;
        decTop->setMotionPredEnabledFlag(j, motionPredEnabledFlag == 1 ? true : false);
        decTop->setNumMotionPredRefLayers(decTop->getNumMotionPredRefLayers() + motionPredEnabledFlag);
      }
    }
  }
  for ( Int i = 1, mIdx = 0, sIdx = 0; i < m_numLayer; i++ )
  {
    Int iNuhLId = vps->getLayerIdInNuh(i);
    TDecTop *decTop = (TDecTop *)getLayerDec(iNuhLId);
    for ( Int j = 0; j < i; j++ )
    {
      if (decTop->getMotionPredEnabledFlag(j))
      {
        decTop->setMotionPredRefLayerId(mIdx++, vps->getLayerIdInNuh(j));
      }
      if (decTop->getSamplePredEnabledFlag(j))
      {
        decTop->setSamplePredRefLayerId(sIdx++, vps->getLayerIdInNuh(j));
      }
    }
  }
}

#endif

#if M0457_COL_PICTURE_SIGNALING && !REMOVE_COL_PICTURE_SIGNALING
TComPic* TDecTop::getMotionPredIlp(TComSlice* pcSlice)
{
  TComPic* ilpPic = NULL;
  Int activeMotionPredReflayerIdx = 0;

  for( Int i = 0; i < pcSlice->getActiveNumILRRefIdx(); i++ )
  {
    UInt refLayerIdc = pcSlice->getInterLayerPredLayerIdc(i);
    if( getMotionPredEnabledFlag( pcSlice->getVPS()->getRefLayerId( m_layerId, refLayerIdc ) ) )
    {
      if (activeMotionPredReflayerIdx == pcSlice->getColRefLayerIdx())
      {
        ilpPic = m_cIlpPic[refLayerIdc];
        break;
      }
      else
      {
        activeMotionPredReflayerIdx++;
      }
    }
  }

  assert(ilpPic != NULL);

  return ilpPic;
}
#endif

//! \}