/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/EventFilter/EcalRawToDigi/src/DCCSCBlock.cc

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#include "EventFilter/EcalRawToDigi/interface/DCCSCBlock.h"
#include "EventFilter/EcalRawToDigi/interface/DCCEventBlock.h"
#include "EventFilter/EcalRawToDigi/interface/DCCDataUnpacker.h"
#include <stdio.h>
#include "EventFilter/EcalRawToDigi/interface/EcalElectronicsMapper.h"



DCCSCBlock::DCCSCBlock( DCCDataUnpacker * u,EcalElectronicsMapper * m , DCCEventBlock * e, bool unpack, bool forceToKeepFRdata)
: DCCFEBlock(u,m,e,unpack,forceToKeepFRdata){}


void DCCSCBlock::updateCollectors(){

  DCCFEBlock::updateCollectors();
  
  // needs to be update for eb/ee
  digis_               = unpacker_->eeDigisCollection();

  invalidGains_        = unpacker_->invalidEEGainsCollection();
  invalidGainsSwitch_  = unpacker_->invalidEEGainsSwitchCollection();
  invalidChIds_        = unpacker_->invalidEEChIdsCollection();

}




int DCCSCBlock::unpackXtalData(unsigned int expStripID, unsigned int expXtalID){
  
  bool errorOnXtal(false);
 
  const uint16_t * xData_= reinterpret_cast<const uint16_t *>(data_);

 
  // Get xtal data ids
  unsigned int stripId = (*xData_) & TOWER_STRIPID_MASK;
  unsigned int xtalId  =((*xData_)>>TOWER_XTALID_B ) & TOWER_XTALID_MASK;
  
  // std::cout<<"\n DEBUG : unpacked xtal data for strip id "<<stripId<<" and xtal id "<<xtalId<<std::endl;
  // std::cout<<"\n DEBUG : expected strip id "<<expStripID<<" expected xtal id "<<expXtalID<<std::endl;
  

  if( !zs_ && (expStripID != stripId || expXtalID != xtalId)){ 

    if( ! DCCDataUnpacker::silentMode_ ){         
      edm::LogWarning("IncorrectBlock")
        <<"For event LV1: "<<event_->l1A()<<", fed "<<mapper_->getActiveDCC()<<" and tower "<<towerId_
        <<"\n The expected strip is "<<expStripID<<" and "<<stripId<<" was found"
        <<"\n The expected xtal  is "<<expXtalID <<" and "<<xtalId<<" was found";        
     }
    
    
    // using expected cry_di to raise warning about xtal_id problem
    pDetId_ = (EEDetId*) mapper_->getDetIdPointer(towerId_,expStripID,expXtalID);
    if(pDetId_) {  (*invalidChIds_)->push_back(*pDetId_); }
    
    stripId = expStripID;
    xtalId  = expXtalID;
    errorOnXtal = true;
    
    // return here, so to skip all following checks
    data_ += numbDWInXtalBlock_;
    return BLOCK_UNPACKED;
  }


  // check id in case of 0suppressed data

  else if(zs_) {

    // Check for valid Ids 1) values out of range

    if (stripId == 0 || stripId > 5 || xtalId == 0 || xtalId > 5) {
      
      if (! DCCDataUnpacker::silentMode_ ) {
        edm::LogWarning("IncorrectBlock")
          <<"For event LV1: "<<event_->l1A()<<", fed "<<mapper_->getActiveDCC()<<" and tower "<<towerId_
          <<"\n Invalid strip : "<<stripId<<" or xtal : "<<xtalId
          <<" ids ( last strip was: " << lastStripId_ << " last ch was: " << lastXtalId_ << ")";
       }
      
      int st = lastStripId_;
      int ch = lastXtalId_;
      ch++;
      if (ch > NUMB_XTAL)         {ch=1; st++;}
      if (st > NUMB_STRIP)        {ch=1; st=1;}

      // adding channel following the last valid
      //pDetId_ = (EEDetId*) mapper_->getDetIdPointer(towerId_,st,ch);
      //(*invalidChIds_)->push_back(*pDetId_);
      fillEcalElectronicsError(invalidZSXtalIds_); 
      errorOnXtal = true;

      lastStripId_ = st;
      lastXtalId_  = ch;

      // return here, so to skip all following checks
      return SKIP_BLOCK_UNPACKING;
    }
    else {
      // Check for zs valid Ids 2) if channel-in-strip has increased wrt previous xtal
      //                        3) if strip has increased wrt previous xtal
      if ((stripId == lastStripId_ && xtalId <= lastXtalId_ ) ||
          (stripId < lastStripId_))
        {
          if (! DCCDataUnpacker::silentMode_) {
            edm::LogWarning("IncorrectBlock")
              << "Xtal id was expected to increase but it didn't - last xtal id was " << lastXtalId_ << " while current xtal is " << xtalId
              << " (LV1 " << event_->l1A() << " fed " << mapper_->getActiveDCC() << " tower " << towerId_ << ")";
          }
          
          int st = lastStripId_;
          int ch = lastXtalId_;
          ch++;
          if (ch > NUMB_XTAL)        {ch=1; st++;}
          if (st > NUMB_STRIP)        {ch=1; st=1;}
          
          // adding channel following the last valid
          //pDetId_ = (EEDetId*) mapper_->getDetIdPointer(towerId_,stripId,xtalId);
          //(*invalidChIds_)->push_back(*pDetId_);
          fillEcalElectronicsError(invalidZSXtalIds_); 
           
           errorOnXtal = true;
           lastStripId_ = st;
           lastXtalId_  = ch;
           
           // return here, so to skip all following checks
           return SKIP_BLOCK_UNPACKING;

        }
        
      lastStripId_  = stripId;
      lastXtalId_   = xtalId;
    }// end else
  }// end if(zs_)
 
  bool addedFrame=false;
  
  // if there is an error on xtal id ignore next error checks  
  // otherwise, assume channel_id is valid and proceed with making and checking the data frame
  if(errorOnXtal) return SKIP_BLOCK_UNPACKING;
  
  pDetId_ = (EEDetId*) mapper_->getDetIdPointer(towerId_, stripId, xtalId);
  
  if(pDetId_){// checking that requested EEDetId exists
    
    (*digis_)->push_back(*pDetId_);
    EEDataFrame df( (*digis_)->back() );
    addedFrame=true;
    bool wrongGain(false);
    
    //set samples in the frame
    for(unsigned int i =0; i< nTSamples_ ;i++){ 
      xData_++;
      unsigned int data =  (*xData_) & TOWER_DIGI_MASK;
      unsigned int gain =  data>>12;
      xtalGains_[i]=gain;
      if(gain == 0){          wrongGain = true; }      // although gain==0 found, produce the dataFrame in order to have it, for saturation case
      df.setSample(i,data);
    }
    
    bool isSaturation(true);
    if(wrongGain){
      
      // check whether the gain==0 has features of saturation or not 
      // gain==0 occurs either in case of data corruption or of ADC saturation 
      //                                  \->reject digi            \-> keep digi 
      
      // determine where gainId==0 starts
      short firstGainZeroSampID(-1);    short firstGainZeroSampADC(-1);
      for (unsigned int s=0; s<nTSamples_; s++ ) {
        if(df.sample(s).gainId()==0 && firstGainZeroSampID==-1)
          {
          firstGainZeroSampID  = s;
          firstGainZeroSampADC = df.sample(s).adc();
          break;
          }
      }
      
    // check whether gain==0 and adc() stays constant for (at least) 5 consecutive samples
    unsigned int plateauEnd = std::min(nTSamples_,(unsigned int)(firstGainZeroSampID+5));
    for (unsigned int s=firstGainZeroSampID; s<plateauEnd; s++) 
      {
        if( df.sample(s).gainId()==0 && df.sample(s).adc()==firstGainZeroSampADC ) {;}
        else
          { isSaturation=false;   break;}  //it's not saturation
      }
    // get rid of channels which are stuck in gain0
    if(firstGainZeroSampID<3) {isSaturation=false; }

    if (! DCCDataUnpacker::silentMode_) {
      if (unpacker_->getChannelValue(mapper_->getActiveDCC(), towerId_, stripId, xtalId) != 10) {
        edm::LogWarning("IncorrectGain")
          << "Gain zero" << (isSaturation ? " with features of saturation" : "" ) << " was found in SC Block"
          << " (L1A " << event_->l1A() << " bx " << event_->bx() << " fed " << mapper_->getActiveDCC()
          << " tower " << towerId_ << " strip " << stripId << " xtal " << xtalId << ")";
      }
    }
    
    if (! isSaturation)
      {     
        (*invalidGains_)->push_back(*pDetId_); 
        (*digis_)->pop_back();
        errorOnXtal = true;
        
        //return here, so to skip all the rest
        //make special collection for gain0 data frames (saturation)
        //Point to begin of next xtal Block
        data_ += numbDWInXtalBlock_;
        
        return BLOCK_UNPACKED;
        
      }//end isSaturation 
    else {
            data_ += numbDWInXtalBlock_;
            return BLOCK_UNPACKED;
    }
    }//end WrongGain
    
    short firstGainWrong=-1;
    short numGainWrong=0;
    
    for (unsigned int i=1; i<nTSamples_; i++ ) {
      if (xtalGains_[i-1]>xtalGains_[i]) {
        numGainWrong++;
        
        if (firstGainWrong == -1) { firstGainWrong=i;}
      }
    }
    
    if (numGainWrong > 0) {
      if (! DCCDataUnpacker::silentMode_) {
        edm::LogWarning("IncorrectGain")
          << "A wrong gain transition switch was found for SC Block in strip " << stripId << " and xtal " << xtalId
          << " (L1A " << event_->l1A() << " bx " << event_->bx() << " fed " << mapper_->getActiveDCC() << " tower " << towerId_ << ")";
      }
      
      (*invalidGainsSwitch_)->push_back(*pDetId_);
      
      errorOnXtal = true;
    }
    
    //Add frame to collection only if all data format and gain rules are respected
    if (errorOnXtal && addedFrame) {
      (*digis_)->pop_back();
    }
    
  }// End 'if EE id exist'
  
  else {
    // in case EEDetId do not exist
    // In EE we may have crystals with no valid EEDetId
    if (! mapper_->isGhost(mapper_->getActiveDCC(), towerId_, stripId)) { // check the VFE is not a 'ghost'
      
      // this is real EE VFE - print warning
      if (! DCCDataUnpacker::silentMode_) {
        edm::LogWarning("IncorrectBlock")
          << "An EEDetId was requested that does not exist "
          << "(LV1 " << event_->l1A()
          << " fed " << mapper_->getActiveDCC()
          << " tower " << towerId_
          << " strip " << stripId
          << " xtal " << xtalId << ")";
      }
    }
  }
  
  //Point to begin of next xtal Block
  data_ += numbDWInXtalBlock_;
  
  return BLOCK_UNPACKED;
}


void DCCSCBlock::fillEcalElectronicsError( std::auto_ptr<EcalElectronicsIdCollection> * errorColection){

  const int activeDCC = mapper_->getActiveSM();

  if ( (NUMB_SM_EE_MIN_MIN <=activeDCC && activeDCC<=NUMB_SM_EE_MIN_MAX) ||
         (NUMB_SM_EE_PLU_MIN <=activeDCC && activeDCC<=NUMB_SM_EE_PLU_MAX) ){
     EcalElectronicsId  *  eleTp = mapper_->getSCElectronicsPointer(activeDCC,expTowerID_);
     (*errorColection)->push_back(*eleTp);
  }else{
     if( ! DCCDataUnpacker::silentMode_ ){
       edm::LogWarning("IncorrectBlock")
         <<"For event "<<event_->l1A()<<" there's fed: "<< activeDCC
         <<" activeDcc: "<<mapper_->getActiveSM()
         <<" but that activeDcc is not valid in EE.";
     }
  }

}