GlobalExtBlkPacker.cc

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

#include "GTTokens.h"
#include "GlobalExtBlkPacker.h"

namespace l1t {
  namespace stage2 {
    Blocks GlobalExtBlkPacker::pack(const edm::Event& event, const PackerTokens* toks) {
      edm::Handle<GlobalExtBlkBxCollection> exts;
      event.getByToken(static_cast<const GTTokens*>(toks)->getExtToken(), exts);

      unsigned int wdPerBX = 6;  //should this be configured someplace else?

      Blocks res;

      for (int blk = 0; blk < 4; blk++) {
        unsigned int blkID = blk * 2 + 24;

        unsigned int extOffset = blk * 64;

        //vector of words
        std::vector<uint32_t> load;

        for (int i = exts->getFirstBX(); i <= exts->getLastBX(); ++i) {
          for (auto j = exts->begin(i); j != exts->end(i); ++j) {
            for (unsigned int wd = 0; wd < wdPerBX; wd++) {
              uint32_t word = 0;

              if (wd < 2) {
                unsigned int startExt = wd * 32 + extOffset;
                for (unsigned bt = 0; bt < 32; bt++) {
                  if (j->getExternalDecision(bt + startExt))
                    word |= (0x1 << bt);

                }  //end loop over bits
              }    //endif wrd < 2

              load.push_back(word);
            }  //loop over words

          }  //end loop over alg objects.(trivial one per BX)

        }  //end loop over bx

        res.push_back(Block(blkID, load));

      }  //loop over blks

      return res;
    }
  }  // namespace stage2
}  // namespace l1t

DEFINE_L1T_PACKER(l1t::stage2::GlobalExtBlkPacker);