/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/EventFilter/SiStripRawToDigi/src/SiStripRawToClustersLazyUnpacker.cc

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#include "EventFilter/SiStripRawToDigi/interface/SiStripRawToClustersLazyUnpacker.h"
#include <sstream>
#include <iostream>

namespace sistrip { 

  RawToClustersLazyUnpacker::RawToClustersLazyUnpacker(const SiStripRegionCabling& regioncabling, StripClusterizerAlgorithm& clustalgo, SiStripRawProcessingAlgorithms& rpAlgos, const FEDRawDataCollection& data, bool dump) :

    raw_(&data),
    regions_(&(regioncabling.getRegionCabling())),
    clusterizer_(&clustalgo),
    rawAlgos_(&rpAlgos),
    buffers_(),
    rawToDigi_(0,0,0,0,0,0,0,0),
    dump_(dump)
  {
    buffers_.assign(1024,static_cast<sistrip::FEDBuffer*>(0));
  }

  RawToClustersLazyUnpacker::~RawToClustersLazyUnpacker() {

    std::vector< sistrip::FEDBuffer*>::iterator ibuffer = buffers_.begin();
    for (; ibuffer!=buffers_.end(); ibuffer++) {
      if (*ibuffer) delete *ibuffer;
    }
  }

  void RawToClustersLazyUnpacker::fill(const uint32_t& index, record_type& record) {

    // Get region, subdet and layer from element-index
    uint32_t region = SiStripRegionCabling::region(index);
    uint32_t subdet = static_cast<uint32_t>(SiStripRegionCabling::subdet(index));
    uint32_t layer = SiStripRegionCabling::layer(index);
 
    // Retrieve cabling for element
    const SiStripRegionCabling::ElementCabling& element = (*regions_)[region][subdet][layer];
  
    // Loop dets
    SiStripRegionCabling::ElementCabling::const_iterator idet = element.begin();
    for (;idet!=element.end();idet++) {
    
      // If det id is null or invalid continue.
      if ( !(idet->first) || (idet->first == sistrip::invalid32_) || !clusterizer_->stripByStripBegin(idet->first)) { continue; }
    
      // Loop over apv-pairs of det
      std::vector<FedChannelConnection>::const_iterator iconn = idet->second.begin();
      for (;iconn!=idet->second.end();iconn++) {
        const uint16_t fedId = iconn->fedId();
      
        // If fed id is null or connection is invalid continue
        if ( !fedId || !iconn->isConnected() ) { continue; }    
      
        // If Fed hasnt already been initialised, extract data and initialise
        FEDBuffer* buffer = buffers_[fedId];
        if (!buffer) {
        
          // Retrieve FED raw data for given FED
          const FEDRawData& rawData = raw_->FEDData( static_cast<int>(fedId) );
        
          // Check on FEDRawData pointer
          if ( !rawData.data() ) {
            if (edm::isDebugEnabled()) {
              edm::LogWarning(sistrip::mlRawToCluster_)
                << "[sistrip::RawToClustersLazyGetter::" 
                << __func__ 
                << "]"
                << " NULL pointer to FEDRawData for FED id " 
                << fedId;
            }
            continue;
          }     
        
          // Check on FEDRawData size
          if ( !rawData.size() ) {
            if (edm::isDebugEnabled()) {
              edm::LogWarning(sistrip::mlRawToCluster_)
                << "[sistrip::RawToClustersLazyGetter::" 
                << __func__ << "]"
                << " FEDRawData has zero size for FED id " 
                << fedId;
            }
            continue;
          }
        
          // construct FEDBuffer
          try {
            buffers_[fedId] = buffer = new sistrip::FEDBuffer(rawData.data(),rawData.size());
            if (!buffer->doChecks()) throw cms::Exception("FEDBuffer") << "FED Buffer check fails for FED ID" << fedId << ".";
          }
          catch (const cms::Exception& e) { 
            if (edm::isDebugEnabled()) {
              edm::LogWarning(sistrip::mlRawToCluster_) 
                << "Exception caught when creating FEDBuffer object for FED " << fedId << ": " << e.what();
            }
            if ( buffer ) { delete buffer; }
            buffers_[fedId] = 0;
            continue;
          }

          // dump of FEDRawData to stdout
          if ( dump_ ) {
            std::stringstream ss;
            rawToDigi_.dumpRawData( fedId, rawData, ss );
            LogTrace(mlRawToDigi_) 
              << ss.str();
          }
        }

        // check channel
        const uint8_t fedCh = iconn->fedCh();
        if (!buffer->channelGood(fedCh)) {
          if (edm::isDebugEnabled()) {
            std::ostringstream ss;
            ss << "Problem unpacking channel " << fedCh << " on FED " << fedId;
            edm::LogWarning(sistrip::mlRawToCluster_) << ss.str();
          }
          continue;
        }
      
        // Determine APV std::pair number
        uint16_t ipair = iconn->apvPairNumber();

        const sistrip::FEDReadoutMode mode = buffer->readoutMode();
        if (mode == sistrip::READOUT_MODE_ZERO_SUPPRESSED ) { 
        
          try {
            // create unpacker
            sistrip::FEDZSChannelUnpacker unpacker = sistrip::FEDZSChannelUnpacker::zeroSuppressedModeUnpacker(buffer->channel(fedCh));
            
            // unpack
            while (unpacker.hasData()) {
              clusterizer_->stripByStripAdd(unpacker.sampleNumber()+ipair*256,unpacker.adc(),record);
              unpacker++;
            }
          } catch (const cms::Exception& e) {
            if (edm::isDebugEnabled()) {
              std::ostringstream ss;
              ss << "Unordered clusters for channel " << fedCh << " on FED " << fedId << ": " << e.what();
              edm::LogWarning(sistrip::mlRawToCluster_) << ss.str();
            }
            continue;
          }
        }

        else if (mode == sistrip::READOUT_MODE_ZERO_SUPPRESSED_LITE ) { 
        
          try {
            // create unpacker
            sistrip::FEDZSChannelUnpacker unpacker = sistrip::FEDZSChannelUnpacker::zeroSuppressedLiteModeUnpacker(buffer->channel(fedCh));

            // unpack
            while (unpacker.hasData()) {
              clusterizer_->stripByStripAdd(unpacker.sampleNumber()+ipair*256,unpacker.adc(),record);
              unpacker++;
            }
          } catch (const cms::Exception& e) {
            if (edm::isDebugEnabled()) {
              std::ostringstream ss;
              ss << "Unordered clusters for channel " << fedCh << " on FED " << fedId << ": " << e.what();
              edm::LogWarning(sistrip::mlRawToCluster_) << ss.str();
            }                                               
            continue;
          }
        }

        else if (mode == sistrip::READOUT_MODE_VIRGIN_RAW ) {

          // create unpacker
          sistrip::FEDRawChannelUnpacker unpacker = sistrip::FEDRawChannelUnpacker::virginRawModeUnpacker(buffer->channel(fedCh));

          // unpack
          std::vector<int16_t> digis;
          while (unpacker.hasData()) {
            digis.push_back(unpacker.adc());
            unpacker++;
          }

          //process raw
          uint32_t id = iconn->detId();
          rawAlgos_->subtractorPed->subtract( id, ipair*256, digis);
          rawAlgos_->subtractorCMN->subtract( id, digis);
          edm::DetSet<SiStripDigi> zsdigis(id);
          rawAlgos_->suppressor->suppress( digis, zsdigis);
          for( edm::DetSet<SiStripDigi>::const_iterator it = zsdigis.begin(); it!=zsdigis.end(); it++) {
            clusterizer_->stripByStripAdd( it->strip(), it->adc(), record);
          }
        }

        else if (mode == sistrip::READOUT_MODE_PROC_RAW ) {

          // create unpacker
          sistrip::FEDRawChannelUnpacker unpacker = sistrip::FEDRawChannelUnpacker::procRawModeUnpacker(buffer->channel(fedCh));

          // unpack
          std::vector<int16_t> digis;
          while (unpacker.hasData()) {
            digis.push_back(unpacker.adc());
            unpacker++;
          }

          //process raw
          uint32_t id = iconn->detId();
          rawAlgos_->subtractorCMN->subtract( id, digis);
          edm::DetSet<SiStripDigi> zsdigis(id);
          rawAlgos_->suppressor->suppress( digis, zsdigis);
          for( edm::DetSet<SiStripDigi>::const_iterator it = zsdigis.begin(); it!=zsdigis.end(); it++) {
            clusterizer_->stripByStripAdd( it->strip(), it->adc(), record);
          }
        }

        else {
          edm::LogWarning(sistrip::mlRawToCluster_)
            << "[sistrip::RawToClustersLazyGetter::" 
            << __func__ << "]"
            << " FEDRawData readout mode "
            << mode
            << " from FED id "
            << fedId 
            << " not supported."; 
          continue;
        }
      }
      clusterizer_->stripByStripEnd(record);
    }
  }

}