HLTDTROMonitorFilter.cc

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/*
 *  See header file for a description of this class.
 *
 *  \author G. Cerminara - INFN Torino
 */


#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/DTDigi/interface/DTDDUWords.h"
#include "HLTDTROMonitorFilter.h"

using namespace edm;


HLTDTROMonitorFilter::HLTDTROMonitorFilter(const edm::ParameterSet& pset)
{
  inputLabel = pset.getParameter<InputTag>("inputLabel");
  inputToken = consumes<FEDRawDataCollection>(inputLabel);
}

HLTDTROMonitorFilter::~HLTDTROMonitorFilter()= default;

void
HLTDTROMonitorFilter::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  desc.add<edm::InputTag>("inputLabel",edm::InputTag("source"));
  descriptions.add("hltDTROMonitorFilter",desc);
}

bool HLTDTROMonitorFilter::filter(edm::Event& event, const edm::EventSetup& setup) {
  // get the raw data
  edm::Handle<FEDRawDataCollection> rawdata;
  event.getByToken(inputToken, rawdata);

  // Loop over the DT FEDs
  int FEDIDmin = FEDNumbering::MINDTFEDID;
  int FEDIDMax = FEDNumbering::MAXDTFEDID;

  // Definitions
  const int wordSize_32 = 4;
  const int wordSize_64 = 8;

  for (int dduID=FEDIDmin; dduID<=FEDIDMax; ++dduID) {  // loop over all feds
    const FEDRawData& feddata = rawdata->FEDData(dduID);
    const int datasize = feddata.size();    
    if (datasize){ // check the FED payload
      const unsigned int* index32 = reinterpret_cast<const unsigned int*>(feddata.data());
      const int numberOf32Words = datasize/wordSize_32;
      
      const unsigned char* index8 = reinterpret_cast<const unsigned char*>(index32);

      // Check Status Words (1 x ROS)
      for (int rosId = 0; rosId < 12; rosId++ ) {
    int wordIndex8 = numberOf32Words*wordSize_32 - 3*wordSize_64 + rosId; 
    DTDDUFirstStatusWord statusWord(index8[wordIndex8]);
    // check the error bit
    if(statusWord.errorFromROS() != 0 || statusWord.eventTrailerLost() != 0) return true;
      }
    }
  }

  // check the event error flag 
  return false;
}

// declare this class as a framework plugin
#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(HLTDTROMonitorFilter);