/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/EventFilter/HcalRawToDigi/plugins/HcalHistogramRawToDigi.cc

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using namespace std;
#include "EventFilter/HcalRawToDigi/plugins/HcalHistogramRawToDigi.h"
#include "DataFormats/FEDRawData/interface/FEDNumbering.h"
#include "DataFormats/FEDRawData/interface/FEDRawDataCollection.h"
#include "DataFormats/HcalDigi/interface/HcalDigiCollections.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "CalibFormats/HcalObjects/interface/HcalDbService.h"
#include "CalibFormats/HcalObjects/interface/HcalDbRecord.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include <iostream>


HcalHistogramRawToDigi::HcalHistogramRawToDigi(edm::ParameterSet const& conf):
  dataTag_(conf.getParameter<edm::InputTag>("InputLabel")),
  unpacker_(conf.getUntrackedParameter<int>("HcalFirstFED",FEDNumbering::MINHCALFEDID)),
  fedUnpackList_(conf.getUntrackedParameter<std::vector<int> >("FEDs")),
  firstFED_(conf.getUntrackedParameter<int>("HcalFirstFED",FEDNumbering::MINHCALFEDID))
{
  std::ostringstream ss;
  for (unsigned int i=0; i<fedUnpackList_.size(); i++) 
    ss << fedUnpackList_[i] << " ";
  edm::LogInfo("HCAL") << "HcalHistogramRawToDigi will unpack FEDs ( " << ss.str() << ")";
    
  // products produced...
  produces<HcalHistogramDigiCollection>();
}

// Virtual destructor needed.
HcalHistogramRawToDigi::~HcalHistogramRawToDigi() { }  

// Functions that gets called by framework every event
void HcalHistogramRawToDigi::produce(edm::Event& e, const edm::EventSetup& es)
{
  // Step A: Get Inputs 
  edm::Handle<FEDRawDataCollection> rawraw;  
  e.getByLabel(dataTag_,rawraw);
  // get the mapping
  edm::ESHandle<HcalDbService> pSetup;
  es.get<HcalDbRecord>().get( pSetup );
  const HcalElectronicsMap* readoutMap=pSetup->getHcalMapping();

  // Step B: Create empty output
  std::auto_ptr<HcalHistogramDigiCollection> prod(new HcalHistogramDigiCollection());
  std::vector<HcalHistogramDigi> digis;

  // Step C: unpack all requested FEDs
  for (std::vector<int>::const_iterator i=fedUnpackList_.begin(); i!=fedUnpackList_.end(); i++) {
    const FEDRawData& fed = rawraw->FEDData(*i);

    unpacker_.unpack(fed,*readoutMap,digis);
  }

  // Step B2: encapsulate vectors in actual collections
  prod->swap_contents(digis);

  // Step D: Put outputs into event
  prod->sort();
  e.put(prod);
}