EncLib.cpp

/* 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.
 *
 * Copyright (c) 2010-2019, ITU/ISO/IEC
 * 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     EncLib.cpp
    \brief    encoder class
*/

#include "EncLib.h"

#include "EncModeCtrl.h"
#include "AQp.h"
#include "EncCu.h"

#include "CommonLib/Picture.h"
#include "CommonLib/CommonDef.h"
#include "CommonLib/ChromaFormat.h"
#if ENABLE_SPLIT_PARALLELISM
#include <omp.h>
#endif

//! \ingroup EncoderLib
//! \{

// ====================================================================================================================
// Constructor / destructor / create / destroy
// ====================================================================================================================

#if JVET_N0278_FIXES
PicList EncLib::m_cListPic;
ParameterSetMap<SPS> EncLib::m_spsMap( MAX_NUM_SPS );
ParameterSetMap<PPS> EncLib::m_ppsMap( MAX_NUM_PPS );
ParameterSetMap<APS> EncLib::m_apsMap( MAX_NUM_APS * MAX_NUM_APS_TYPE );
#endif

EncLib::EncLib()
#if JVET_N0278_FIXES
  : m_AUWriterIf( nullptr )
#else
  : m_spsMap( MAX_NUM_SPS )
  , m_ppsMap( MAX_NUM_PPS )
  , m_apsMap(MAX_NUM_APS * MAX_NUM_APS_TYPE)
  , m_AUWriterIf( nullptr )
#endif
#if JVET_J0090_MEMORY_BANDWITH_MEASURE
  , m_cacheModel()
#endif
  , m_lmcsAPS(nullptr)
  , m_scalinglistAPS( nullptr )
  , m_doPlt( true )
{
  m_iPOCLast          = -1;
  m_iNumPicRcvd       =  0;
  m_uiNumAllPicCoded  =  0;

  m_iMaxRefPicNum     = 0;

#if ENABLE_SIMD_OPT_BUFFER
  g_pelBufOP.initPelBufOpsX86();
#endif

#if JVET_O0756_CALCULATE_HDRMETRICS
  m_metricTime = std::chrono::milliseconds(0);
#endif

  memset(m_apss, 0, sizeof(m_apss));

#if JVET_N0278_FIXES
  m_layerId = NOT_VALID;
#endif
}

EncLib::~EncLib()
{
}

#if JVET_N0278_FIXES
void EncLib::create( const int layerId )
#else
void EncLib::create ()
#endif
{
#if JVET_N0278_FIXES
  m_layerId = layerId;
#endif
  // initialize global variables
  initROM();
  TComHash::initBlockSizeToIndex();
  m_iPOCLast = m_compositeRefEnabled ? -2 : -1;
  // create processing unit classes
  m_cGOPEncoder.        create( );
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
#if ENABLE_SPLIT_PARALLELISM
  m_numCuEncStacks  = m_numSplitThreads == 1 ? 1 : NUM_RESERVERD_SPLIT_JOBS;
#else
  m_numCuEncStacks  = 1;
#endif
#if ENABLE_WPP_PARALLELISM
  m_numCuEncStacks *= ( m_numWppThreads + m_numWppExtraLines );
#endif

  m_cCuEncoder      = new EncCu              [m_numCuEncStacks];
  m_cInterSearch    = new InterSearch        [m_numCuEncStacks];
  m_cIntraSearch    = new IntraSearch        [m_numCuEncStacks];
  m_cTrQuant        = new TrQuant            [m_numCuEncStacks];
  m_CABACEncoder    = new CABACEncoder       [m_numCuEncStacks];
  m_cRdCost         = new RdCost             [m_numCuEncStacks];
  m_CtxCache        = new CtxCache           [m_numCuEncStacks];

  for( int jId = 0; jId < m_numCuEncStacks; jId++ )
  {
    m_cCuEncoder[jId].         create( this );
  }
#else
  m_cCuEncoder.         create( this );
#endif
#if JVET_J0090_MEMORY_BANDWITH_MEASURE
  m_cInterSearch.cacheAssign( &m_cacheModel );
#endif

  m_cLoopFilter.create( m_maxTotalCUDepth );

#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  m_cReshaper = new EncReshape[m_numCuEncStacks];
#endif
  if (m_lumaReshapeEnable)
  {
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
    for (int jId = 0; jId < m_numCuEncStacks; jId++)
    {
      m_cReshaper[jId].createEnc(getSourceWidth(), getSourceHeight(), m_maxCUWidth, m_maxCUHeight, m_bitDepth[COMPONENT_Y]);
    }
#else
    m_cReshaper.createEnc( getSourceWidth(), getSourceHeight(), m_maxCUWidth, m_maxCUHeight, m_bitDepth[COMPONENT_Y]);
#endif
  }
  if ( m_RCEnableRateControl )
  {
    m_cRateCtrl.init(m_framesToBeEncoded, m_RCTargetBitrate, (int)((double)m_iFrameRate / m_temporalSubsampleRatio + 0.5), m_iGOPSize, m_iSourceWidth, m_iSourceHeight,
      m_maxCUWidth, m_maxCUHeight, getBitDepth(CHANNEL_TYPE_LUMA), m_RCKeepHierarchicalBit, m_RCUseLCUSeparateModel, m_GOPList);
  }

}

void EncLib::destroy ()
{
  // destroy processing unit classes
  m_cGOPEncoder.        destroy();
  m_cSliceEncoder.      destroy();
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  for( int jId = 0; jId < m_numCuEncStacks; jId++ )
  {
    m_cCuEncoder[jId].destroy();
  }
#else
  m_cCuEncoder.         destroy();
#endif
  if( m_alf )
  {
    m_cEncALF.destroy();
  }
  m_cEncSAO.            destroyEncData();
  m_cEncSAO.            destroy();
  m_cLoopFilter.        destroy();
  m_cRateCtrl.          destroy();
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  for (int jId = 0; jId < m_numCuEncStacks; jId++)
  {
    m_cReshaper[jId].   destroy();
  }
#else
  m_cReshaper.          destroy();
#endif
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  for( int jId = 0; jId < m_numCuEncStacks; jId++ )
  {
    m_cInterSearch[jId].   destroy();
    m_cIntraSearch[jId].   destroy();
  }
#else
  m_cInterSearch.       destroy();
  m_cIntraSearch.       destroy();
#endif

#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  delete[] m_cCuEncoder;
  delete[] m_cInterSearch;
  delete[] m_cIntraSearch;
  delete[] m_cTrQuant;
  delete[] m_CABACEncoder;
  delete[] m_cRdCost;
  delete[] m_CtxCache;
#endif

#if !JVET_N0278_FIXES
  // destroy ROM
  destroyROM();
#endif
  return;
}

void EncLib::init( bool isFieldCoding, AUWriterIf* auWriterIf )
{
  m_AUWriterIf = auWriterIf;

  SPS &sps0=*(m_spsMap.allocatePS(0)); // NOTE: implementations that use more than 1 SPS need to be aware of activation issues.
#if JVET_N0278_FIXES
  PPS &pps0 = *( m_ppsMap.allocatePS( m_layerId ) );
#else
  PPS &pps0=*(m_ppsMap.allocatePS(0));
#endif
  APS &aps0 = *( m_apsMap.allocatePS( SCALING_LIST_APS ) );
  aps0.setAPSId( 0 );
  aps0.setAPSType( SCALING_LIST_APS );

  // initialize SPS
  xInitSPS(sps0);
  xInitVPS(m_cVPS);

  int dpsId = getDecodingParameterSetEnabled() ? 1 : 0;
  xInitDPS(m_dps, sps0, dpsId);
  sps0.setDecodingParameterSetId(m_dps.getDecodingParameterSetId());

#if ENABLE_SPLIT_PARALLELISM
  if( omp_get_dynamic() )
  {
    omp_set_dynamic( false );
  }
  omp_set_nested( true );
#endif

  if (getUseCompositeRef() || getDependentRAPIndicationSEIEnabled())
  {
    sps0.setLongTermRefsPresent(true);
  }

#if U0132_TARGET_BITS_SATURATION
  if (m_RCCpbSaturationEnabled)
  {
    m_cRateCtrl.initHrdParam(sps0.getHrdParameters(), m_iFrameRate, m_RCInitialCpbFullness);
  }
#endif
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  for( int jId = 0; jId < m_numCuEncStacks; jId++ )
  {
    m_cRdCost[jId].setCostMode ( m_costMode );
  }
#else
  m_cRdCost.setCostMode ( m_costMode );
#endif

  // initialize PPS
  pps0.setPicWidthInLumaSamples( m_iSourceWidth );
  pps0.setPicHeightInLumaSamples( m_iSourceHeight );
  pps0.setConformanceWindow( m_conformanceWindow );
  xInitPPS(pps0, sps0);
  // initialize APS
  xInitRPL(sps0, isFieldCoding);

  if( m_rprEnabled )
  {
    PPS &pps = *( m_ppsMap.allocatePS( ENC_PPS_ID_RPR ) );
    Window& inputConfWindow = pps0.getConformanceWindow();
    int scaledWidth = int((pps0.getPicWidthInLumaSamples() - (inputConfWindow.getWindowLeftOffset() + inputConfWindow.getWindowRightOffset()) * SPS::getWinUnitX(sps0.getChromaFormatIdc())) / m_scalingRatioHor);
    int minSizeUnit = std::max(8, (int)(sps0.getMaxCUHeight() >> (sps0.getMaxCodingDepth() - 1)));
    int temp = scaledWidth / minSizeUnit;
    int width = ( scaledWidth - ( temp * minSizeUnit) > 0 ? temp + 1 : temp ) * minSizeUnit;

    int scaledHeight = int((pps0.getPicHeightInLumaSamples() - (inputConfWindow.getWindowTopOffset() + inputConfWindow.getWindowBottomOffset()) * SPS::getWinUnitY(sps0.getChromaFormatIdc())) / m_scalingRatioVer);
    temp = scaledHeight / minSizeUnit;
    int height = ( scaledHeight - ( temp * minSizeUnit) > 0 ? temp + 1 : temp ) * minSizeUnit;

    pps.setPicWidthInLumaSamples( width );
    pps.setPicHeightInLumaSamples( height );

    Window conformanceWindow;

    conformanceWindow.setWindow( 0, ( width - scaledWidth ) / SPS::getWinUnitX( sps0.getChromaFormatIdc() ), 0, ( height - scaledHeight ) / SPS::getWinUnitY( sps0.getChromaFormatIdc() ) );

    pps.setConformanceWindow( conformanceWindow );

    xInitPPS( pps, sps0 ); // will allocate memory for and initialize pps.pcv inside
  }

#if ER_CHROMA_QP_WCG_PPS
  if (m_wcgChromaQpControl.isEnabled())
  {
    PPS &pps1=*(m_ppsMap.allocatePS(1));
    xInitPPS(pps1, sps0);
  }
#endif
  if (getUseCompositeRef())
  {
    PPS &pps2 = *(m_ppsMap.allocatePS(2));
    xInitPPS(pps2, sps0);
    xInitPPSforLT(pps2);
  }

  // initialize processing unit classes
  m_cGOPEncoder.  init( this );
  m_cSliceEncoder.init( this, sps0 );
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  for( int jId = 0; jId < m_numCuEncStacks; jId++ )
  {
    // precache a few objects
    for( int i = 0; i < 10; i++ )
    {
      auto x = m_CtxCache[jId].get();
      m_CtxCache[jId].cache( x );
    }

    m_cCuEncoder[jId].init( this, sps0, jId );

    // initialize transform & quantization class
    m_cTrQuant[jId].init( jId == 0 ? nullptr : m_cTrQuant[0].getQuant(),
                          1 << m_log2MaxTbSize,

                          m_useRDOQ,
                          m_useRDOQTS,
#if T0196_SELECTIVE_RDOQ
                          m_useSelectiveRDOQ,
#endif
                          true
    );

    // initialize encoder search class
    CABACWriter* cabacEstimator = m_CABACEncoder[jId].getCABACEstimator( &sps0 );
    m_cIntraSearch[jId].init( this,
                              &m_cTrQuant[jId],
                              &m_cRdCost[jId],
                              cabacEstimator,
                              getCtxCache( jId ), m_maxCUWidth, m_maxCUHeight, m_maxTotalCUDepth
                            , &m_cReshaper[jId]
    );
    m_cInterSearch[jId].init( this,
                              &m_cTrQuant[jId],
                              m_iSearchRange,
                              m_bipredSearchRange,
                              m_motionEstimationSearchMethod,
                              getUseCompositeRef(),
                              m_maxCUWidth, m_maxCUHeight, m_maxTotalCUDepth, &m_cRdCost[jId], cabacEstimator, getCtxCache( jId )
                           , &m_cReshaper[jId]
    );

    // link temporary buffets from intra search with inter search to avoid unnecessary memory overhead
    m_cInterSearch[jId].setTempBuffers( m_cIntraSearch[jId].getSplitCSBuf(), m_cIntraSearch[jId].getFullCSBuf(), m_cIntraSearch[jId].getSaveCSBuf() );
  }
#else  // ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
  m_cCuEncoder.   init( this, sps0 );

  // initialize transform & quantization class
  m_cTrQuant.init( nullptr,
                   1 << m_log2MaxTbSize,
                   m_useRDOQ,
                   m_useRDOQTS,
#if T0196_SELECTIVE_RDOQ
                   m_useSelectiveRDOQ,
#endif
                   true
  );

  // initialize encoder search class
  CABACWriter* cabacEstimator = m_CABACEncoder.getCABACEstimator(&sps0);
  m_cIntraSearch.init( this,
                       &m_cTrQuant,
                       &m_cRdCost,
                       cabacEstimator,
                       getCtxCache(), m_maxCUWidth, m_maxCUHeight, m_maxTotalCUDepth
                     , &m_cReshaper
  );
  m_cInterSearch.init( this,
                       &m_cTrQuant,
                       m_iSearchRange,
                       m_bipredSearchRange,
                       m_motionEstimationSearchMethod,
                       getUseCompositeRef(),
    m_maxCUWidth, m_maxCUHeight, m_maxTotalCUDepth, &m_cRdCost, cabacEstimator, getCtxCache()
                     , &m_cReshaper
  );

  // link temporary buffets from intra search with inter search to avoid unneccessary memory overhead
  m_cInterSearch.setTempBuffers( m_cIntraSearch.getSplitCSBuf(), m_cIntraSearch.getFullCSBuf(), m_cIntraSearch.getSaveCSBuf() );
#endif // ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM

  m_iMaxRefPicNum = 0;

#if ER_CHROMA_QP_WCG_PPS
  if( m_wcgChromaQpControl.isEnabled() )
  {
    xInitScalingLists( sps0, *m_apsMap.getPS( 1 ) );
    xInitScalingLists( sps0, aps0 );
  }
  else
#endif
  {
    xInitScalingLists( sps0, aps0 );
  }
  if( m_rprEnabled )
  {
    xInitScalingLists( sps0, *m_apsMap.getPS( ENC_PPS_ID_RPR ) );
  }
#if ENABLE_WPP_PARALLELISM
  m_entropyCodingSyncContextStateVec.resize( pps0.pcv->heightInCtus );
#endif
  if (getUseCompositeRef())
  {
    Picture *picBg = new Picture;
#if JVET_N0278_FIXES
    picBg->create( sps0.getChromaFormatIdc(), Size( pps0.getPicWidthInLumaSamples(), pps0.getPicHeightInLumaSamples() ), sps0.getMaxCUWidth(), sps0.getMaxCUWidth() + 16, false, m_layerId );
#else
    picBg->create( sps0.getChromaFormatIdc(), Size( pps0.getPicWidthInLumaSamples(), pps0.getPicHeightInLumaSamples() ), sps0.getMaxCUWidth(), sps0.getMaxCUWidth() + 16, false );
#endif
    picBg->getRecoBuf().fill(0);
    picBg->finalInit( sps0, pps0, m_apss, m_lmcsAPS, m_scalinglistAPS );
    pps0.setNumBricksInPic((int)picBg->brickMap->bricks.size());
    picBg->allocateNewSlice();
    picBg->createSpliceIdx(pps0.pcv->sizeInCtus);
    m_cGOPEncoder.setPicBg(picBg);
    Picture *picOrig = new Picture;
#if JVET_N0278_FIXES
    picOrig->create( sps0.getChromaFormatIdc(), Size( pps0.getPicWidthInLumaSamples(), pps0.getPicHeightInLumaSamples() ), sps0.getMaxCUWidth(), sps0.getMaxCUWidth() + 16, false, m_layerId );
#else
    picOrig->create( sps0.getChromaFormatIdc(), Size( pps0.getPicWidthInLumaSamples(), pps0.getPicHeightInLumaSamples() ), sps0.getMaxCUWidth(), sps0.getMaxCUWidth() + 16, false );
#endif
    picOrig->getOrigBuf().fill(0);
    m_cGOPEncoder.setPicOrig(picOrig);
  }
}

void EncLib::xInitScalingLists( SPS &sps, APS &aps )
{
  // Initialise scaling lists
  // The encoder will only use the SPS scaling lists. The PPS will never be marked present.
  const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE] =
  {
    sps.getMaxLog2TrDynamicRange(CHANNEL_TYPE_LUMA),
    sps.getMaxLog2TrDynamicRange(CHANNEL_TYPE_CHROMA)
  };

  Quant* quant = getTrQuant()->getQuant();

  if(getUseScalingListId() == SCALING_LIST_OFF)
  {
    quant->setFlatScalingList(maxLog2TrDynamicRange, sps.getBitDepths());
    quant->setUseScalingList(false);
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
    for( int jId = 1; jId < m_numCuEncStacks; jId++ )
    {
      getTrQuant( jId )->getQuant()->setFlatScalingList( maxLog2TrDynamicRange, sps.getBitDepths() );
      getTrQuant( jId )->getQuant()->setUseScalingList( false );
    }
#endif
  }
  else if(getUseScalingListId() == SCALING_LIST_DEFAULT)
  {
    aps.getScalingList().setDefaultScalingList ();
    quant->setScalingList( &( aps.getScalingList() ), maxLog2TrDynamicRange, sps.getBitDepths() );
    quant->setUseScalingList(true);
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
    for( int jId = 1; jId < m_numCuEncStacks; jId++ )
    {
      getTrQuant( jId )->getQuant()->setUseScalingList( true );
    }
#endif
  }
  else if(getUseScalingListId() == SCALING_LIST_FILE_READ)
  {
    aps.getScalingList().setDefaultScalingList();
    CHECK( aps.getScalingList().xParseScalingList( getScalingListFileName() ), "Error Parsing Scaling List Input File" );
    aps.getScalingList().checkDcOfMatrix();
    if( aps.getScalingList().isNotDefaultScalingList() == false )
    {
      setUseScalingListId( SCALING_LIST_DEFAULT );
    }
    quant->setScalingList( &( aps.getScalingList() ), maxLog2TrDynamicRange, sps.getBitDepths() );
    quant->setUseScalingList(true);
#if ENABLE_SPLIT_PARALLELISM || ENABLE_WPP_PARALLELISM
    for( int jId = 1; jId < m_numCuEncStacks; jId++ )
    {
      getTrQuant( jId )->getQuant()->setUseScalingList( true );
    }
#endif
  }
  else
  {
    THROW("error : ScalingList == " << getUseScalingListId() << " not supported\n");
  }

  if( getUseScalingListId() == SCALING_LIST_FILE_READ )
  {
    // Prepare delta's:
    for (uint32_t sizeId = SCALING_LIST_2x2; sizeId <= SCALING_LIST_64x64; sizeId++)
    {
      for (uint32_t listId = 0; listId < SCALING_LIST_NUM; listId++)
      {
        if (((sizeId == SCALING_LIST_64x64) && (listId % (SCALING_LIST_NUM / SCALING_LIST_PRED_MODES) != 0))
         || ((sizeId == SCALING_LIST_2x2) && (listId % (SCALING_LIST_NUM / SCALING_LIST_PRED_MODES) == 0)))
        {
          continue;
        }
        aps.getScalingList().checkPredMode( sizeId, listId );
      }
    }
  }
}

void EncLib::xInitPPSforLT(PPS& pps)
{
  pps.setOutputFlagPresentFlag(true);
  pps.setDeblockingFilterControlPresentFlag(true);
  pps.setPPSDeblockingFilterDisabledFlag(true);
}

// ====================================================================================================================
// Public member functions
// ====================================================================================================================

void EncLib::deletePicBuffer()
{
  PicList::iterator iterPic = m_cListPic.begin();
  int iSize = int( m_cListPic.size() );

  for ( int i = 0; i < iSize; i++ )
  {
    Picture* pcPic = *(iterPic++);

    pcPic->destroy();

    // get rid of the qpadaption layer
    while( pcPic->aqlayer.size() )
    {
      delete pcPic->aqlayer.back(); pcPic->aqlayer.pop_back();
    }

    delete pcPic;
    pcPic = NULL;
  }

#if JVET_N0278_FIXES
  m_cListPic.clear();
#endif
}

/**
 - Application has picture buffer list with size of GOP + 1
 - Picture buffer list acts like as ring buffer
 - End of the list has the latest picture
 .
 \param   flush               cause encoder to encode a partial GOP
 \param   pcPicYuvOrg         original YUV picture
 \param   pcPicYuvTrueOrg
 \param   snrCSC
 \retval  rcListPicYuvRecOut  list of reconstruction YUV pictures
 \retval  accessUnitsOut      list of output access units
 \retval  iNumEncoded         number of encoded pictures
 */
void EncLib::encode( bool flush, PelStorage* pcPicYuvOrg, PelStorage* cPicYuvTrueOrg, const InputColourSpaceConversion snrCSC, std::list<PelUnitBuf*>& rcListPicYuvRecOut,
                     int& iNumEncoded )
{
  if (m_compositeRefEnabled && m_cGOPEncoder.getPicBg()->getSpliceFull() && m_iPOCLast >= 10 && m_iNumPicRcvd == 0 && m_cGOPEncoder.getEncodedLTRef() == false)
  {
    Picture* picCurr = NULL;
    xGetNewPicBuffer(rcListPicYuvRecOut, picCurr, 2);
    const PPS *pps = m_ppsMap.getPS(2);
    const SPS *sps = m_spsMap.getPS(pps->getSPSId());

    picCurr->M_BUFS(0, PIC_ORIGINAL).copyFrom(m_cGOPEncoder.getPicBg()->getRecoBuf());
    picCurr->finalInit( *sps, *pps, m_apss, m_lmcsAPS, m_scalinglistAPS );
    picCurr->poc = m_iPOCLast - 1;
    m_iPOCLast -= 2;
    if (getUseAdaptiveQP())
    {
      AQpPreanalyzer::preanalyze(picCurr);
    }
    if (m_RCEnableRateControl)
    {
      m_cRateCtrl.initRCGOP(m_iNumPicRcvd);
    }
    m_cGOPEncoder.compressGOP(m_iPOCLast, m_iNumPicRcvd, m_cListPic, rcListPicYuvRecOut,
      false, false, snrCSC, m_printFrameMSE, true);
#if JVET_O0756_CALCULATE_HDRMETRICS
    m_metricTime = m_cGOPEncoder.getMetricTime();
#endif
    m_cGOPEncoder.setEncodedLTRef(true);
    if (m_RCEnableRateControl)
    {
      m_cRateCtrl.destroyRCGOP();
    }

    iNumEncoded = 0;
    m_iNumPicRcvd = 0;
  }
  //PROF_ACCUM_AND_START_NEW_SET( getProfilerPic(), P_GOP_LEVEL );
  if (pcPicYuvOrg != NULL)
  {
    // get original YUV
    Picture* pcPicCurr = NULL;

    int ppsID=-1; // Use default PPS ID
#if ER_CHROMA_QP_WCG_PPS
    if (getWCGChromaQPControl().isEnabled())
    {
      ppsID = getdQPs()[m_iPOCLast / (m_compositeRefEnabled ? 2 : 1) + 1];
      ppsID+=(getSwitchPOC() != -1 && (m_iPOCLast+1 >= getSwitchPOC())?1:0);
    }
#endif

    if( m_rprEnabled && m_uiIntraPeriod == -1 )
    {
      const int poc = m_iPOCLast + ( m_compositeRefEnabled ? 2 : 1 );

      if( poc / m_switchPocPeriod % 2 )
      {
        ppsID = ENC_PPS_ID_RPR;
      }
      else
      {
        ppsID = 0;
      }
    }

#if JVET_N0278_FIXES
    if( m_cVPS.getMaxLayers() > 1 )
    {
      ppsID = m_layerId;
    }
#endif

    xGetNewPicBuffer( rcListPicYuvRecOut, pcPicCurr, ppsID );

    const PPS *pPPS = ( ppsID < 0 ) ? m_ppsMap.getFirstPS() : m_ppsMap.getPS( ppsID );
    const SPS *pSPS = m_spsMap.getPS( pPPS->getSPSId() );

    if( m_rprEnabled )
    {
      pcPicCurr->M_BUFS( 0, PIC_ORIGINAL_INPUT ).getBuf( COMPONENT_Y ).copyFrom( pcPicYuvOrg->getBuf( COMPONENT_Y ) );
      pcPicCurr->M_BUFS( 0, PIC_ORIGINAL_INPUT ).getBuf( COMPONENT_Cb ).copyFrom( pcPicYuvOrg->getBuf( COMPONENT_Cb ) );
      pcPicCurr->M_BUFS( 0, PIC_ORIGINAL_INPUT ).getBuf( COMPONENT_Cr ).copyFrom( pcPicYuvOrg->getBuf( COMPONENT_Cr ) );

      pcPicCurr->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT ).getBuf( COMPONENT_Y ).copyFrom( cPicYuvTrueOrg->getBuf( COMPONENT_Y ) );
      pcPicCurr->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT ).getBuf( COMPONENT_Cb ).copyFrom( cPicYuvTrueOrg->getBuf( COMPONENT_Cb ) );
      pcPicCurr->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT ).getBuf( COMPONENT_Cr ).copyFrom( cPicYuvTrueOrg->getBuf( COMPONENT_Cr ) );

      const ChromaFormat chromaFormatIDC = pSPS->getChromaFormatIdc();

      const PPS *refPPS = m_ppsMap.getPS( 0 );
      Picture::rescalePicture( *pcPicYuvOrg, refPPS->getConformanceWindow(), pcPicCurr->getOrigBuf(), pPPS->getConformanceWindow(), chromaFormatIDC, pSPS->getBitDepths(), true, true );
      Picture::rescalePicture( *cPicYuvTrueOrg, refPPS->getConformanceWindow(), pcPicCurr->getTrueOrigBuf(), pPPS->getConformanceWindow(), chromaFormatIDC, pSPS->getBitDepths(), true, true );
    }
    else
    {
      pcPicCurr->M_BUFS( 0, PIC_ORIGINAL ).swap( *pcPicYuvOrg );
      pcPicCurr->M_BUFS( 0, PIC_TRUE_ORIGINAL ).swap( *cPicYuvTrueOrg );
    }

    pcPicCurr->finalInit( *pSPS, *pPPS, m_apss, m_lmcsAPS, m_scalinglistAPS );
    PPS *ptrPPS = ( ppsID < 0 ) ? m_ppsMap.getFirstPS() : m_ppsMap.getPS( ppsID );
    ptrPPS->setNumBricksInPic( (int)pcPicCurr->brickMap->bricks.size() );

    pcPicCurr->poc = m_iPOCLast;

    // compute image characteristics
    if ( getUseAdaptiveQP() )
    {
      AQpPreanalyzer::preanalyze( pcPicCurr );
    }
  }

  if ((m_iNumPicRcvd == 0) || (!flush && (m_iPOCLast != 0) && (m_iNumPicRcvd != m_iGOPSize) && (m_iGOPSize != 0)))
  {
    iNumEncoded = 0;
    return;
  }

  if ( m_RCEnableRateControl )
  {
    m_cRateCtrl.initRCGOP( m_iNumPicRcvd );
  }

  // compress GOP
  m_cGOPEncoder.compressGOP(m_iPOCLast, m_iNumPicRcvd, m_cListPic, rcListPicYuvRecOut,
                            false, false, snrCSC, m_printFrameMSE
    , false
  );
#if JVET_O0756_CALCULATE_HDRMETRICS
  m_metricTime = m_cGOPEncoder.getMetricTime();
#endif

  if ( m_RCEnableRateControl )
  {
    m_cRateCtrl.destroyRCGOP();
  }

  iNumEncoded         = m_iNumPicRcvd;
  m_iNumPicRcvd       = 0;
  m_uiNumAllPicCoded += iNumEncoded;
}

/**------------------------------------------------
 Separate interlaced frame into two fields
 -------------------------------------------------**/
void separateFields(Pel* org, Pel* dstField, uint32_t stride, uint32_t width, uint32_t height, bool isTop)
{
  if (!isTop)
  {
    org += stride;
  }
  for (int y = 0; y < height>>1; y++)
  {
    for (int x = 0; x < width; x++)
    {
      dstField[x] = org[x];
    }

    dstField += stride;
    org += stride*2;
  }

}

void EncLib::encode( bool flush, PelStorage* pcPicYuvOrg, PelStorage* pcPicYuvTrueOrg, const InputColourSpaceConversion snrCSC, std::list<PelUnitBuf*>& rcListPicYuvRecOut,
                     int& iNumEncoded, bool isTff )
{
  iNumEncoded = 0;

  for (int fieldNum=0; fieldNum<2; fieldNum++)
  {
    if (pcPicYuvOrg)
    {
      /* -- field initialization -- */
      const bool isTopField=isTff==(fieldNum==0);

      Picture *pcField;
      xGetNewPicBuffer( rcListPicYuvRecOut, pcField, -1 );

      for (uint32_t comp = 0; comp < ::getNumberValidComponents(pcPicYuvOrg->chromaFormat); comp++)
      {
        const ComponentID compID = ComponentID(comp);
        {
          PelBuf compBuf = pcPicYuvOrg->get( compID );
          separateFields( compBuf.buf,
                         pcField->getOrigBuf().get(compID).buf,
                         compBuf.stride,
                         compBuf.width,
                         compBuf.height,
                         isTopField);
        }
      }

      {
        int ppsID=-1; // Use default PPS ID
        const PPS *pPPS=(ppsID<0) ? m_ppsMap.getFirstPS() : m_ppsMap.getPS(ppsID);
        const SPS *pSPS=m_spsMap.getPS(pPPS->getSPSId());
        pcField->finalInit( *pSPS, *pPPS, m_apss, m_lmcsAPS, m_scalinglistAPS );
      }

      pcField->poc = m_iPOCLast;
      pcField->reconstructed = false;

      pcField->setBorderExtension(false);// where is this normally?

      pcField->topField = isTopField;                  // interlaced requirement

      // compute image characteristics
      if ( getUseAdaptiveQP() )
      {
        AQpPreanalyzer::preanalyze( pcField );
      }
    }

    if ( m_iNumPicRcvd && ((flush&&fieldNum==1) || (m_iPOCLast/2)==0 || m_iNumPicRcvd==m_iGOPSize ) )
    {
      // compress GOP
      m_cGOPEncoder.compressGOP(m_iPOCLast, m_iNumPicRcvd, m_cListPic, rcListPicYuvRecOut, true, isTff, snrCSC, m_printFrameMSE
                              , false
      );
#if JVET_O0756_CALCULATE_HDRMETRICS
      m_metricTime = m_cGOPEncoder.getMetricTime();
#endif

      iNumEncoded += m_iNumPicRcvd;
      m_uiNumAllPicCoded += m_iNumPicRcvd;
      m_iNumPicRcvd = 0;
    }
  }
}


// ====================================================================================================================
// Protected member functions
// ====================================================================================================================

/**
 - Application has picture buffer list with size of GOP + 1
 - Picture buffer list acts like as ring buffer
 - End of the list has the latest picture
 .
 \retval rpcPic obtained picture buffer
 */
void EncLib::xGetNewPicBuffer ( std::list<PelUnitBuf*>& rcListPicYuvRecOut, Picture*& rpcPic, int ppsId )
{
  // rotate he output buffer
  rcListPicYuvRecOut.push_back( rcListPicYuvRecOut.front() ); rcListPicYuvRecOut.pop_front();

  rpcPic=0;

  // At this point, the SPS and PPS can be considered activated - they are copied to the new Pic.
  const PPS *pPPS=(ppsId<0) ? m_ppsMap.getFirstPS() : m_ppsMap.getPS(ppsId);
  CHECK(!(pPPS!=0), "Unspecified error");
  const PPS &pps=*pPPS;

  const SPS *pSPS=m_spsMap.getPS(pps.getSPSId());
  CHECK(!(pSPS!=0), "Unspecified error");
  const SPS &sps=*pSPS;

  Slice::sortPicList(m_cListPic);

  // use an entry in the buffered list if the maximum number that need buffering has been reached:
  if( m_cListPic.size() >= (uint32_t)( m_iGOPSize + getMaxDecPicBuffering( MAX_TLAYER - 1 ) + 2 ) )
  {
    PicList::iterator iterPic = m_cListPic.begin();
    int iSize = int( m_cListPic.size() );
    for( int i = 0; i < iSize; i++ )
    {
      rpcPic = *iterPic;
#if JVET_N0278_FIXES
      if( !rpcPic->referenced && rpcPic->layerId == m_layerId )
      {
        break;
      }
      else
      {
        rpcPic = nullptr;
      }
#else
      if( !rpcPic->referenced )
      {
        break;
      }
#endif
      iterPic++;
    }

    // If PPS ID is the same, we will assume that it has not changed since it was last used
    // and return the old object.
#if JVET_N0278_FIXES
    if( pps.getPPSId() != rpcPic->cs->pps->getPPSId() && rpcPic )
#else
    if (pps.getPPSId() != rpcPic->cs->pps->getPPSId())
#endif
    {
      // the IDs differ - free up an entry in the list, and then create a new one, as with the case where the max buffering state has not been reached.
      rpcPic->destroy();
      delete rpcPic;
      m_cListPic.erase(iterPic);
      rpcPic=0;
    }
  }

  if (rpcPic==0)
  {
    rpcPic = new Picture;
#if JVET_N0278_FIXES
    rpcPic->create( sps.getChromaFormatIdc(), Size( pps.getPicWidthInLumaSamples(), pps.getPicHeightInLumaSamples() ), sps.getMaxCUWidth(), sps.getMaxCUWidth() + 16, false, m_layerId );
#else
    rpcPic->create( sps.getChromaFormatIdc(), Size( pps.getPicWidthInLumaSamples(), pps.getPicHeightInLumaSamples() ), sps.getMaxCUWidth(), sps.getMaxCUWidth() + 16, false );
#endif
    if( m_rprEnabled )
    {
      rpcPic->M_BUFS( 0, PIC_ORIGINAL_INPUT ).create( sps.getChromaFormatIdc(), Area( Position(), Size( sps.getMaxPicWidthInLumaSamples(), sps.getMaxPicHeightInLumaSamples() ) ) );
      rpcPic->M_BUFS( 0, PIC_TRUE_ORIGINAL_INPUT ).create( sps.getChromaFormatIdc(), Area( Position(), Size( sps.getMaxPicWidthInLumaSamples(), sps.getMaxPicHeightInLumaSamples() ) ) );
    }
    if ( getUseAdaptiveQP() )
    {
      const uint32_t iMaxDQPLayer = pps.getCuQpDeltaSubdiv()/2+1;
      rpcPic->aqlayer.resize( iMaxDQPLayer );
      for (uint32_t d = 0; d < iMaxDQPLayer; d++)
      {
        rpcPic->aqlayer[d] = new AQpLayer( pps.getPicWidthInLumaSamples(), pps.getPicHeightInLumaSamples(), sps.getMaxCUWidth() >> d, sps.getMaxCUHeight() >> d );
      }
    }

    m_cListPic.push_back( rpcPic );
  }

  rpcPic->setBorderExtension( false );
  rpcPic->reconstructed = false;
  rpcPic->referenced = true;
  rpcPic->getHashMap()->clearAll();

  m_iPOCLast += (m_compositeRefEnabled ? 2 : 1);
  m_iNumPicRcvd++;
}


void EncLib::xInitVPS(VPS &vps)
{
  // The SPS must have already been set up.
  // set the VPS profile information.
#if !JVET_N0278_FIXES  
  vps.setMaxLayers(1);
#endif
  for (uint32_t i = 0; i < vps.getMaxLayers(); i++)
  {
    vps.setVPSIncludedLayerId(0, i);
  }
}

void EncLib::xInitDPS(DPS &dps, const SPS &sps, const int dpsId)
{
  // The SPS must have already been set up.
  // set the DPS profile information.
  dps.setDecodingParameterSetId(dpsId);
  dps.setMaxSubLayersMinus1(sps.getMaxTLayers()-1);
  dps.setProfileTierLevel(*sps.getProfileTierLevel());
}


void EncLib::xInitSPS(SPS &sps)
{
  ProfileTierLevel* profileTierLevel = sps.getProfileTierLevel();
  ConstraintInfo* cinfo = profileTierLevel->getConstraintInfo();
  cinfo->setProgressiveSourceFlag       (m_progressiveSourceFlag);
  cinfo->setInterlacedSourceFlag        (m_interlacedSourceFlag);
  cinfo->setNonPackedConstraintFlag     (m_nonPackedConstraintFlag);
  cinfo->setFrameOnlyConstraintFlag     (m_frameOnlyConstraintFlag);
  cinfo->setIntraOnlyConstraintFlag         (m_intraConstraintFlag);
  cinfo->setMaxBitDepthConstraintIdc    (m_maxBitDepthConstraintIdc);
  cinfo->setMaxChromaFormatConstraintIdc((ChromaFormat)m_maxChromaFormatConstraintIdc);
  cinfo->setNoQtbttDualTreeIntraConstraintFlag(m_bNoQtbttDualTreeIntraConstraintFlag);
  cinfo->setNoPartitionConstraintsOverrideConstraintFlag(m_noPartitionConstraintsOverrideConstraintFlag);
  cinfo->setNoSaoConstraintFlag(m_bNoSaoConstraintFlag);
  cinfo->setNoAlfConstraintFlag(m_bNoAlfConstraintFlag);
  cinfo->setNoRefWraparoundConstraintFlag(m_bNoRefWraparoundConstraintFlag);
  cinfo->setNoTemporalMvpConstraintFlag(m_bNoTemporalMvpConstraintFlag);
  cinfo->setNoSbtmvpConstraintFlag(m_bNoSbtmvpConstraintFlag);
  cinfo->setNoAmvrConstraintFlag(m_bNoAmvrConstraintFlag);
  cinfo->setNoBdofConstraintFlag(m_bNoBdofConstraintFlag);
  cinfo->setNoDmvrConstraintFlag(m_noDmvrConstraintFlag);
  cinfo->setNoCclmConstraintFlag(m_bNoCclmConstraintFlag);
  cinfo->setNoMtsConstraintFlag(m_bNoMtsConstraintFlag);
  cinfo->setNoSbtConstraintFlag(m_noSbtConstraintFlag);
  cinfo->setNoAffineMotionConstraintFlag(m_bNoAffineMotionConstraintFlag);
  cinfo->setNoGbiConstraintFlag(m_bNoGbiConstraintFlag);
  cinfo->setNoIbcConstraintFlag(m_noIbcConstraintFlag);
  cinfo->setNoMhIntraConstraintFlag(m_bNoMhIntraConstraintFlag);
  cinfo->setNoFPelMmvdConstraintFlag(m_noFPelMmvdConstraintFlag);
  cinfo->setNoTriangleConstraintFlag(m_bNoTriangleConstraintFlag);
  cinfo->setNoLadfConstraintFlag(m_bNoLadfConstraintFlag);
  cinfo->setNoTransformSkipConstraintFlag(m_noTransformSkipConstraintFlag);
  cinfo->setNoBDPCMConstraintFlag(m_noBDPCMConstraintFlag);
  cinfo->setNoJointCbCrConstraintFlag(m_noJointCbCrConstraintFlag);
  cinfo->setNoQpDeltaConstraintFlag(m_bNoQpDeltaConstraintFlag);
  cinfo->setNoDepQuantConstraintFlag(m_bNoDepQuantConstraintFlag);
  cinfo->setNoSignDataHidingConstraintFlag(m_bNoSignDataHidingConstraintFlag);

  profileTierLevel->setLevelIdc                    (m_level);
  profileTierLevel->setTierFlag                    (m_levelTier);
  profileTierLevel->setProfileIdc                  (m_profile);
  profileTierLevel->setNumSubProfile(m_numSubProfile);
  for (int k = 0; k < m_numSubProfile; k++)
  {
    profileTierLevel->setSubProfileIdc(k, m_subProfile[k]);
  }
  /* XXX: should Main be marked as compatible with still picture? */
  /* XXX: may be a good idea to refactor the above into a function
   * that chooses the actual compatibility based upon options */

  sps.setMaxPicWidthInLumaSamples( m_iSourceWidth );
  sps.setMaxPicHeightInLumaSamples( m_iSourceHeight );
  sps.setMaxCUWidth             ( m_maxCUWidth        );