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/** \file     TExtrTop.cpp
    \brief    extractor class
*/

#include "TExtrTop.h"
#if NH_MV
TExtrTop::TExtrTop()
{
}

TExtrTop::~TExtrTop()
{
}

Void TExtrTop::init()
{
  m_cEntropyDecoder.init(&m_cPrediction);

  m_acSPSBuffer.clear();
}

Bool TExtrTop::extract( InputNALUnit& nalu, std::set<UInt>& rsuiExtractLayerIds )
{
  //extraction now has to be done using layer_id
  UInt uiLayerId      = nalu.m_nuhLayerId;

  
  // Initialize entropy decoder
  m_cEntropyDecoder.setEntropyDecoder( &m_cCavlcDecoder );

  TComInputBitstream inpBs = nalu.getBitstream(); 
  m_cEntropyDecoder.setBitstream     ( &inpBs );
  
  if ( nalu.m_nalUnitType == NAL_UNIT_VPS )
  {
    // a hack for now assuming there's only one VPS in the bitstream
    m_cEntropyDecoder.decodeVPS( &m_cVPS );      
  }

  if ( nalu.m_nalUnitType == NAL_UNIT_SPS )
  {
     TComSPS     cSPS;
     m_cEntropyDecoder   .decodeSPS( &cSPS );
     m_acSPSBuffer       .push_back( cSPS );
  }

  return ( rsuiExtractLayerIds.find( uiLayerId ) != rsuiExtractLayerIds.end() );
}


Void TExtrTop::dumpSpsInfo( std::ostream& rcSpsInfoHandle )
{ 
  rcSpsInfoHandle << "NumSPS = " << m_acSPSBuffer.size() << std::endl;
  
  std::list<Int>::iterator iterSPSLayerId = m_aiSPSLayerIdBuffer.begin(); 

  for( std::list<TComSPS>::iterator iterSPS = m_acSPSBuffer.begin(); iterSPS != m_acSPSBuffer.end(); iterSPS++, iterSPSLayerId++ )
  {     
     rcSpsInfoHandle << "layer_id = "              << *iterSPSLayerId << std::endl;
     rcSpsInfoHandle << "seq_parameter_set_id = "  << iterSPS->getSPSId() << std::endl;
  }
}

Void TExtrTop::dumpVpsInfo( std::ostream& rcVpsInfoHandle )
{ 
  rcVpsInfoHandle << "MaxLayers      = " << m_cVPS.getMaxLayersMinus1() + 1 << std::endl; 
  rcVpsInfoHandle << "MaxNuhLayerId  = " << m_cVPS.getVpsMaxLayerId() << std::endl;                      

  for ( Int layerIdxInVps = 0; layerIdxInVps <= m_cVPS.getMaxLayersMinus1(); layerIdxInVps++ )
  {  
    Int layerId = m_cVPS.getLayerIdInNuh( layerIdxInVps ); 
    rcVpsInfoHandle << "LayerIdxInVps  = " << layerIdxInVps                       << std::endl; 
    rcVpsInfoHandle << "LayerIdInNuh   = " << layerId                             << std::endl; 
    rcVpsInfoHandle << "ViewOrderIndex = " << m_cVPS.getViewIndex     ( layerId ) << std::endl;     
    rcVpsInfoHandle << "DepthFlag      = " << m_cVPS.getDepthId       ( layerId ) << std::endl;     
    rcVpsInfoHandle << "ViewId         = " << m_cVPS.getViewId        ( layerId ) << std::endl;     
  }
}
#endif