/data/refman/pasoursint/CMSSW_4_4_5_patch3/src/EventFilter/DTRawToDigi/plugins/DTROS8Unpacker.cc

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#include <EventFilter/DTRawToDigi/plugins/DTROS8Unpacker.h>
#include <CondFormats/DTObjects/interface/DTReadOutMapping.h>
#include <FWCore/Utilities/interface/Exception.h>
#include <DataFormats/MuonDetId/interface/DTWireId.h> 

#include <iostream>
#include <map>


using namespace std;
using namespace edm;
using namespace cms;

void DTROS8Unpacker::interpretRawData(const unsigned int* index, int datasize,
                                      int dduID,
                                      edm::ESHandle<DTReadOutMapping>& mapping, 
                                      std::auto_ptr<DTDigiCollection>& product,
                                      std::auto_ptr<DTLocalTriggerCollection>& product2,
                                      uint16_t rosList) {
 

  const int wordLength = 4;
  int numberOfWords = datasize / wordLength;
  int robID = 0;
  int rosID = 0;
  int eventID = 0;
  int bunchID = 0;

  map<int,int> hitOrder;

  // Loop over the ROS8 words
  for ( int i = 1; i < numberOfWords; i++ ) {

    // The word
    uint32_t word = index[i];

    // The word type
    int type = ( word >> 28 ) & 0xF;

    // Event Header 
    if ( type == 15 ) {
      robID =   word        & 0x7;
      rosID = ( word >> 3 ) & 0xFF;
    } 

    // TDC Header/Trailer
    else if ( type <= 3 ) {
      eventID = ( word >> 12 ) & 0xFFF;
      bunchID =   word &         0xFFF; 
    }

    // TDC Measurement
    else if ( type >= 4 && type <= 5 ) {
      
      int tdcID = ( word >> 24 ) & 0xF;
      int tdcChannel = ( word >> 19 ) & 0x1F;

      int channelIndex = robID << 7 | tdcID << 5 | tdcChannel;
      hitOrder[channelIndex]++;

      int tdcMeasurement =  word  & 0x7FFFF;
      tdcMeasurement >>= 2;


      try {

        // Check the ddu ID in the mapping been used
        dduID = pset.getUntrackedParameter<int>("dduID",730);

        // Map the RO channel to the DetId and wire
        DTWireId detId; 
        if ( ! mapping->readOutToGeometry(dduID, rosID, robID, tdcID, tdcChannel,detId)) {
          if (pset.getUntrackedParameter<bool>("debugMode",false)) cout<<"[DTROS8Unpacker] "<<detId<<endl;
          int wire = detId.wire();
          
          // Produce the digi
          DTDigi digi(wire, tdcMeasurement, hitOrder[channelIndex]-1);
          
          // Commit to the event
          product->insertDigi(detId.layerId(),digi);
        }
        else if (pset.getUntrackedParameter<bool>("debugMode",false)) 
          cout<<"[DTROS8Unpacker] Missing wire!"<<endl;
      }

      catch (cms::Exception & e1) {
        cout<<"[DTUnpackingModule]: WARNING: Digi not build!"<<endl; 
        return;
      }
    }
    
  }
}