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::HcalLaserUnpacker

(

)

Definition at line 7 of file HcalLaserUnpacker.cc.

{}

Member Function Documentation

unpack()

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

Definition at line 16 of file HcalLaserUnpacker.cc.

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

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);
  }
}