IntermediateMuonUnpacker.cc

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#include "FWCore/Framework/interface/Event.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "EventFilter/L1TRawToDigi/plugins/UnpackerFactory.h"

#include "L1Trigger/L1TMuon/interface/MuonRawDigiTranslator.h"

#include "GMTCollections.h"
#include "IntermediateMuonUnpacker.h"

namespace l1t {
   namespace stage2 {
      IntermediateMuonUnpacker::IntermediateMuonUnpacker() : res1_(nullptr), res2_(nullptr), coll1Cnt_(0)
      {
      }

      bool
      IntermediateMuonUnpacker::unpack(const Block& block, UnpackerCollections *coll)
      {
         LogDebug("L1T") << "Block ID  = " << block.header().getID() << " size = " << block.header().getSize();
         // process only if there is a payload
         // If all BX block were zero suppressed the block header size is 0.
         if (block.header().getSize() < 1) {
            return true;
         }

         auto payload = block.payload();

         int nBX, firstBX, lastBX;
         // Check if per BX zero suppression was enabled
         bool bxZsEnabled = ((block.header().getFlags() >> bxzs_enable_shift_) & 0x1) == 1;
         // Calculate the total number of BXs
         if (bxZsEnabled) {
            BxBlockHeader bxHeader(payload.at(0));
            nBX = bxHeader.getTotalBx();
         } else {
            nBX = int(ceil(block.header().getSize() / nWords_));
         }
         getBXRange(nBX, firstBX, lastBX);

         // decide which collections to use according to the link ID
         unsigned int linkId = (block.header().getID() - 1) / 2;
         // Intermediate muons come on uGMT output links 24-31.
         // Each link can transmit 3 muons and we receive 4 intermediate muons from
         // EMTF/OMTF on each detector side and 8 intermediate muons from BMTF.
         // Therefore, the muon at a certain position on a link has to be filled
         // in a specific collection. The order is from links 24-31:
         // 4 muons from EMTF pos, 4 from OMTF pos, 8 from BMTF, 4 from OMTF neg,
         // and 4 from EMTF neg.
         switch (linkId) {
           case 24:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFPos();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFPos();
             coll1Cnt_ = 3;
             break;
           case 25:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFPos();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsOMTFPos();
             coll1Cnt_ = 1;
             break;
           case 26:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsOMTFPos();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             coll1Cnt_ = 2;
             break;
           case 27:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             coll1Cnt_ = 3;
             break;
           case 28:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             coll1Cnt_ = 3;
             break;
           case 29:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsBMTF();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsOMTFNeg();
             coll1Cnt_ = 1;
             break;
           case 30:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsOMTFNeg();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFNeg();
             coll1Cnt_ = 2;
             break;
           case 31:
             res1_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFNeg();
             res2_ = static_cast<GMTCollections*>(coll)->getImdMuonsEMTFNeg();
             coll1Cnt_ = 3;
             break;
           default:
             edm::LogWarning("L1T") << "Block ID " << block.header().getID() << " not associated with intermediate muons. Skip.";
             return false;
         }
         res1_->setBXRange(firstBX, lastBX);
         res2_->setBXRange(firstBX, lastBX);
         LogDebug("L1T") << "nBX = " << nBX << " first BX = " << firstBX << " lastBX = " << lastBX;

         // Get the BX blocks and unpack them
         auto bxBlocks = block.getBxBlocks(nWords_, bxZsEnabled);
         for (const auto& bxBlock : bxBlocks) {
            unpackBx(bxBlock.header().getBx(), bxBlock.payload());
         }
         return true;
      }


      void
      IntermediateMuonUnpacker::unpackBx(int bx, const std::vector<uint32_t>& payload, unsigned int startIdx)
      {
         unsigned int i = startIdx;
         // Check if there are enough words left in the payload
         if (i + nWords_ <= payload.size()) {
            unsigned int muonCnt = 0;
            for (unsigned nWord = 0; nWord < nWords_; nWord += 2, ++muonCnt) {
               uint32_t raw_data_00_31 = payload[i++];
               uint32_t raw_data_32_63 = payload[i++];        
               LogDebug("L1T") << "raw_data_00_31 = 0x" << hex << raw_data_00_31 << " raw_data_32_63 = 0x" << raw_data_32_63;
               // skip empty muons (hwPt == 0)
               if (((raw_data_00_31 >> l1t::MuonRawDigiTranslator::ptShift_) & l1t::MuonRawDigiTranslator::ptMask_) == 0) {
                  LogDebug("L1T") << "Muon hwPt zero. Skip.";
                  continue;
               }

               Muon mu;

               // The intermediate muons of the uGMT (FED number 1402) do not
               // have coordinates estimated at the vertex in the RAW data.
               // The corresponding bits are set to zero.
               MuonRawDigiTranslator::fillMuon(mu, raw_data_00_31, raw_data_32_63, 1402, getAlgoVersion());

               LogDebug("L1T") << "Mu" << nWord/2 << ": eta " << mu.hwEta() << " phi " << mu.hwPhi() << " pT " << mu.hwPt() << " iso " << mu.hwIso() << " qual " << mu.hwQual() << " charge " << mu.hwCharge() << " charge valid " << mu.hwChargeValid();

               if (muonCnt < coll1Cnt_) { 
                 res1_->push_back(bx, mu);
               } else {
                 res2_->push_back(bx, mu);
               }
            }
         } else {
            edm::LogWarning("L1T") << "Only " << payload.size() - i << " 32 bit words in this BX but " << nWords_ << " are required. Not unpacking the data for BX " << bx << ".";
         }
      }

   } // namespace stage2
} // namespace l1t

DEFINE_L1T_UNPACKER(l1t::stage2::IntermediateMuonUnpacker);