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

#include "TExtrTop.h"

TExtrTop::TExtrTop()
{
}

TExtrTop::~TExtrTop()
{
}

Void TExtrTop::create()
{
}

Void TExtrTop::destroy()
{
  m_acSPSBuffer.clear();
}

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

  m_acSPSBuffer.clear();
}


Bool TExtrTop::extract( TComBitstream* pcBitstream, std::set<UInt>& rsuiExtractLayerIds )
{
  // Initialize entropy decoder
  m_cEntropyDecoder.setEntropyDecoder (&m_cCavlcDecoder);
  m_cEntropyDecoder.setBitstream      (pcBitstream);
  
  NalUnitType eNalUnitType;
  UInt uiTemporalId, uiLayerId;

  m_cEntropyDecoder.decodeNalUnitHeader( eNalUnitType, uiTemporalId, uiLayerId );  

  if ( eNalUnitType == NAL_UNIT_SPS )
  {
     TComSPS cSPS;

     m_cEntropyDecoder.decodeSPS( &cSPS );
     cSPS.setLayerId( uiLayerId );

     m_acSPSBuffer.push_back( cSPS );
  }

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


Void TExtrTop::dumpSpsInfo( std::ostream& rcSpsInfoHandle )
{
  rcSpsInfoHandle << "NumSPS = " << m_acSPSBuffer.size() << std::endl;

  for( std::list<TComSPS>::iterator iterSPS = m_acSPSBuffer.begin(); iterSPS != m_acSPSBuffer.end(); iterSPS++ )
  {
     rcSpsInfoHandle << std::endl;
     rcSpsInfoHandle << "layer_id = "              << iterSPS->getLayerId() << std::endl;
     rcSpsInfoHandle << "seq_parameter_set_id = "  << iterSPS->getSPSId() << std::endl;
     rcSpsInfoHandle << "view_id = "               << iterSPS->getViewId() << std::endl;
     rcSpsInfoHandle << "view_order_idx = "        << iterSPS->getViewOrderIdx() << std::endl;
     rcSpsInfoHandle << "is_depth = "              << iterSPS->isDepth() << std::endl;
  }
}