JetPacker.cc

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#include "FWCore/Framework/interface/Event.h"

#include "EventFilter/L1TRawToDigi/interface/Packer.h"

#include "CaloTokens.h"

#include "L1TStage2Layer2Constants.h"

namespace l1t {
   namespace stage2 {
      class JetPacker : public Packer {
         public:
        JetPacker(int b1, int b2) : b1_(b1), b2_(b2) {}
            virtual Blocks pack(const edm::Event&, const PackerTokens*) override;
        int b1_, b2_;
      };

      class GTJetPacker : public JetPacker {
         public:
             GTJetPacker() : JetPacker(12,14) {}
      };
      class CaloJetPacker : public JetPacker {
         public:
         CaloJetPacker() : JetPacker(13,15) {}
      };


   }
}

// Implementation

namespace l1t {
namespace stage2 {
   Blocks
   JetPacker::pack(const edm::Event& event, const PackerTokens* toks)
   {
      edm::Handle<JetBxCollection> jets;
      event.getByToken(static_cast<const CommonTokens*>(toks)->getJetToken(), jets);

      std::vector<uint32_t> load1, load2;

      // loop over BX
      int nBx=0;
      for (int i = jets->getFirstBX(); i <= jets->getLastBX(); ++i) {

     // get jets from this BX
    for (auto j = jets->begin(i); j != jets->end(i); ++j ) {

      uint32_t packed_eta = abs(j->hwEta()) & 0x7F;
      if (j->hwEta() < 0){
        packed_eta = (128 - packed_eta) | 1<<7;
      }

      uint32_t word =           \
	    std::min(j->hwPt(), 0x7FF) |
        packed_eta << 11 |
        (j->hwPhi() & 0xFF) << 19 |
        (j->hwQual() & 0x7) << 27;
      
      // Depending on the number, push onto appropriate link
      if (load1.size() - nBx*l1t::stage2::layer2::demux::nJetPerLink < l1t::stage2::layer2::demux::nJetPerLink) load1.push_back(word);
      else load2.push_back(word);
         
    }
     

    // push zeroes if jets are missing must do this for each BX and each link 
    while (load1.size() - nBx*l1t::stage2::layer2::demux::nOutputFramePerBX <l1t::stage2::layer2::demux::nOutputFramePerBX) load1.push_back(0); 
        while (load2.size() - nBx*l1t::stage2::layer2::demux::nOutputFramePerBX <l1t::stage2::layer2::demux::nOutputFramePerBX) load2.push_back(0);
  
    nBx++;
    
      }

      

      return {Block(b1_, load1), Block(b2_, load2)};
   }
}
}

DEFINE_L1T_PACKER(l1t::stage2::GTJetPacker);
DEFINE_L1T_PACKER(l1t::stage2::CaloJetPacker);