HcalLaserUnpacker Class Reference

#include <HcalLaserUnpacker.h>

Public Member Functions
	HcalLaserUnpacker ()
void	unpack (const FEDRawData &raw, HcalLaserDigi &digi) const

Detailed Description

Definition at line 7 of file HcalLaserUnpacker.h.

Constructor & Destructor Documentation

HcalLaserUnpacker::HcalLaserUnpacker

(

)

Definition at line 7 of file HcalLaserUnpacker.cc.

{}

Member Function Documentation

void HcalLaserUnpacker::unpack	(	const FEDRawData &	raw,
		HcalLaserDigi &	digi
	)		const

Definition at line 16 of file HcalLaserUnpacker.cc.

References HcalLaserDigi::addTDCHit(), FEDRawData::data(), Exception, i, CombinedTDCQDCDataFormat::n_qdc_hits, CombinedTDCQDCDataFormat::n_tdc_hits, CombinedTDCQDCDataFormat::qdc_values, HcalLaserDigi::setQADC(), and FEDRawData::size().

Referenced by HcalLaserReco::produce().

                                              {

  if (raw.size()<3*8) {
    throw cms::Exception("Missing Data") << "No data in the block";
  }

  const CombinedTDCQDCDataFormat* qdctdc=(const CombinedTDCQDCDataFormat*)raw.data();

  // first, we do the QADC
  std::vector<uint16_t> qadcvals;
  for (unsigned int i=0;i<qdctdc->n_qdc_hits;i++) {
    qadcvals.push_back(qdctdc->qdc_values[i]&0xFFF);
  }
  digi.setQADC(qadcvals);

  // next, we do the TDC
  const unsigned int* hitbase=(&(qdctdc->n_tdc_hits))+1; // base is one beyond 
  unsigned int totalhits=0;

  hitbase+=qdctdc->n_qdc_hits/2; // two unsigned short per unsigned long
  totalhits=qdctdc->n_tdc_hits&0xFFFF; // mask off high bits

  for (unsigned int i=0; i<totalhits; i++) {
    int channel=(hitbase[i]&0x7FC00000)>>22; // hardcode channel assignment
    int time=(hitbase[i]&0xFFFFF);
    if (channel==0 && time==0 && i==(totalhits-1)) continue; // ignore "filler" hit
    digi.addTDCHit(channel,time);
  }  
}