trigscint::ZCCMDecoder Class Reference

Public Member Functions
	ZCCMDecoder (const std::string &name, framework::Process &process)
virtual	~ZCCMDecoder ()=default
	Default destructor, closes up boost archive and input stream.
void	configure (framework::config::Parameters &ps) override
	Configure our converter based off the configuration parameters decoded from the passed python script.
void	produce (framework::Event &event) override
	Process the event and put new data products into it.
void	onProcessStart () override
	Callback for the EventProcessor to take any necessary action when the processing of events starts, such as creating histograms.
void	onProcessEnd () override
	Callback for the EventProcessor to take any necessary action when the processing of events finishes, such as calculating job-summary quantities.
Public Member Functions inherited from framework::Producer
	Producer (const std::string &name, Process &process)
	Class constructor.
virtual void	process (Event &event) final
	Processing an event for a Producer is calling produce.
Public Member Functions inherited from framework::EventProcessor
	DECLARE_FACTORY (EventProcessor, EventProcessor *, const std::string &, Process &)
	declare that we have a factory for this class
	EventProcessor (const std::string &name, Process &process)
	Class constructor.
virtual	~EventProcessor ()=default
	Class destructor.
virtual void	beforeNewRun (ldmx::RunHeader &run_header)
	Callback for Producers to add parameters to the run header before conditions are initialized.
virtual void	onNewRun (const ldmx::RunHeader &run_header)
	Callback for the EventProcessor to take any necessary action when the run being processed changes.
virtual void	onFileOpen (EventFile &event_file)
	Callback for the EventProcessor to take any necessary action when a new event input ROOT file is opened.
virtual void	onFileClose (EventFile &event_file)
	Callback for the EventProcessor to take any necessary action when a event input ROOT file is closed.
template<class T >
const T &	getCondition (const std::string &condition_name)
	Access a conditions object for the current event.
TDirectory *	getHistoDirectory ()
	Access/create a directory in the histogram file for this event processor to create histograms and analysis tuples.
void	setStorageHint (framework::StorageControl::Hint hint)
	Mark the current event as having the given storage control hint from this module_.
void	setStorageHint (framework::StorageControl::Hint hint, const std::string &purposeString)
	Mark the current event as having the given storage control hint from this module and the given purpose string.
int	getLogFrequency () const
	Get the current logging frequency from the process.
int	getRunNumber () const
	Get the run number from the process.
std::string	getName () const
	Get the processor name.
void	createHistograms (const std::vector< framework::config::Parameters > &histos)
	Internal function which is used to create histograms passed from the python configuration @parma histos vector of Parameters that configure histograms to create.

Private Attributes
std::string	channel_map_file_name_
	the channel mapping
std::ifstream	channel_map_file_
std::map< int, int >	channel_map_
std::string	module_map_file_name_
	the module mapping
std::ifstream	module_map_file_
std::map< int, int >	module_map_
std::string	input_collection_
std::string	output_collection_
std::string	input_pass_name_
int	number_of_lanes_ {14}
int	n_channels_ {number_of_lanes_ * ZCCMOutput::NUM_CHAN_PER_LANE}
int	n_samples_ {70}
bool	is_real_data_ {true}
int	modules_used_ [4] = {0}

Additional Inherited Members
Protected Member Functions inherited from framework::EventProcessor
void	abortEvent ()
	Abort the event immediately.
Protected Attributes inherited from framework::EventProcessor
HistogramPool	histograms_
	helper object for making and filling histograms
NtupleManager &	ntuple_ {NtupleManager::getInstance()}
	Manager for any ntuples.
logging::logger	the_log_
	The logger for this EventProcessor.

Detailed Description

Definition at line 16 of file ZCCMDecoder.h.

Constructor & Destructor Documentation

ZCCMDecoder()

trigscint::ZCCMDecoder::ZCCMDecoder ( const std::string & name, framework::Process & process )

inline

Definition at line 18 of file ZCCMDecoder.h.

      : Producer(name, process) {}

Member Function Documentation

configure()

void trigscint::ZCCMDecoder::configure ( framework::config::Parameters & ps )

overridevirtual

Configure our converter based off the configuration parameters decoded from the passed python script.

Reimplemented from framework::EventProcessor.

Definition at line 9 of file ZCCMDecoder.cxx.

                                                         {
  // Configure this instance of the encoder
  output_collection_ = ps.get<std::string>("output_collection");
  input_collection_ = ps.get<std::string>("input_collection");
  input_pass_name_ = ps.get<std::string>("input_pass_name");
  module_map_file_name_ = ps.get<std::string>("module_map_file");
  channel_map_file_name_ = ps.get<std::string>("channel_map_file");
  n_channels_ = ps.get<int>("number_channels");
  n_samples_ = ps.get<int>("number_time_samples");
  is_real_data_ = ps.get<bool>("is_real_data");
  //  daq_junk_words_len_bytes_ = ps.get<int>("daq_extra_header_bytes");
  // daq_junk_tail_len_bits_ = ps.get<int>("daq_trailing_header_bits");
 
  ldmx_log(debug) << "In configure, got parameters:" << "\noutput_collection = "
                  << output_collection_
                  << "\ninput_collection = " << input_collection_
                  << "\ninput_pass_name  = " << input_pass_name_
                  << "\nmodule_map_file = " << module_map_file_name_
                  << "\nchannel_map_file = " << channel_map_file_name_
                  << "\nnumber_channels  = " << n_channels_
                  << "\nnumber_time_samples  = " << n_samples_
                  << "\nis_real_data  = " << is_real_data_;
 
  channel_map_file_.open(channel_map_file_name_, std::ios::in);
  if (!channel_map_file_.is_open()) {
    EXCEPTION_RAISE("BadMapFile", "The channel mapping file cannot be opened.");
    return;
  }
  int n_chan_from_map = -1;  // we will in effect count newlines
  int ch_id, el_id;
  while (!channel_map_file_.eof()) {
    channel_map_file_ >> el_id >> ch_id;
    // make the map based on electronics ID, to look up channel ID.
    // the reason is, the elecID is given by the position of the word in
    // the output. so these need to be strictly ordered.
    // writing the right bar in the right position is easier if we can just
    // read this map from beginning to end.
    // barID can always be set, or looked up, as a property of the digi.
 
    // here make the elecID the key (other way around when encoding)
    channel_map_.insert(std::pair<int, int>(el_id, ch_id));
    ldmx_log(debug) << el_id << "  chID " << ch_id;
    n_chan_from_map++;  // will increment on last newline as well
  }
  channel_map_file_.close();
  if (n_chan_from_map != n_channels_)
    ldmx_log(fatal) << "The set number of channels: " << n_channels_
                    << " does not match the number obtained from the map :"
                    << n_chan_from_map;
 
  // and similarly for the lane-->module mapping
 
  module_map_file_.open(module_map_file_name_, std::ios::in);
  if (!module_map_file_.is_open()) {
    ldmx_log(fatal) << "The module mapping file cannot be opened.";
    return;
  }
  int module_id, lane_id;
  while (!module_map_file_.eof()) {
    module_map_file_ >> lane_id >> module_id;
    // make the map based on lane ID, to look up module ID.
    // here make the lane the key (other way around when encoding)
    module_map_.insert(std::pair<int, int>(lane_id, module_id));
    ldmx_log(debug) << "lane " << lane_id << "  --> module ID " << module_id;
    modules_used_[module_id] = 1;
  }
  module_map_file_.close();
  int n_lanes = n_channels_ / ZCCMOutput::NUM_CHAN_PER_LANE;
  if (lane_id != n_lanes - 1)
    ldmx_log(fatal) << "The set number of lanes " << n_lanes
                    << " seems not to match the number obtained from the map :"
                    << lane_id + 1;
 
  return;
}

References channel_map_file_name_, framework::config::Parameters::get(), and module_map_file_name_.

onProcessEnd()

void trigscint::ZCCMDecoder::onProcessEnd ( )

overridevirtual

Callback for the EventProcessor to take any necessary action when the processing of events finishes, such as calculating job-summary quantities.

Reimplemented from framework::EventProcessor.

Definition at line 321 of file ZCCMDecoder.cxx.

                               {
  ldmx_log(debug) << "Process ends!";
 
  return;
}

onProcessStart()

void trigscint::ZCCMDecoder::onProcessStart ( )

overridevirtual

Callback for the EventProcessor to take any necessary action when the processing of events starts, such as creating histograms.

Reimplemented from framework::EventProcessor.

Definition at line 315 of file ZCCMDecoder.cxx.

                                 {
  ldmx_log(debug) << "Process starts!";
 
  return;
}

produce()

void trigscint::ZCCMDecoder::produce ( framework::Event & event )

overridevirtual

Process the event and put new data products into it.

Parameters

event

The Event to process.

Implements framework::Producer.

Definition at line 85 of file ZCCMDecoder.cxx.

                                               {
  ldmx_log(debug) << "ZCCMDecoder: produce() starts! Event number: "
                  << event.getEventHeader().getEventNumber();
 
  // this has to be configurable for now, to read real data
  int n_samp = n_samples_;
  ldmx_log(debug) << "num samples = " << n_samp;
 
  ldmx_log(debug) << "Looking up input collection " << input_collection_ << "_"
                  << input_pass_name_;
  const auto event_output{
      event.getCollection<uint8_t>(input_collection_, input_pass_name_)};
  ldmx_log(debug) << "Got input collection " << input_collection_ << "_"
                  << input_pass_name_;
 
  /* -- PROCESS THE EVENT INFORMATION -- */
  uint32_t time_stamp = 0;
  for (int i_w = 0; i_w < ZCCMOutput::TIMESTAMP_LEN_BYTES; i_w++) {
    int pos = ZCCMOutput::TIMESTAMP_POS + i_w;
    uint8_t time_word = event_output.at(pos);
    ldmx_log(debug) << "time stamp word at position " << pos
                    << " (with iW = " << i_w
                    << ") = " << std::bitset<8>(time_word);
    time_stamp |= (time_word << i_w * 8);  // shift by a byte at a time
  }
  // This time_stamp is local to the TS
  event.getEventHeader().setIntParameter("TS Timestamp", time_stamp);
 
  /* -- TS event header done; read the channel contents -- */
 
  /*
    in a loop over samples, loop over nlanes
    get ADC, TDC, flags and lane nb
    lane number uses a full byte
    the flags word contains
         - capID (2b)
         - CE (1b, some channel alignment error flag)
         - BC0 (most of the time 0, set to 1 with fixed frequency. if channels
    are aligned, then BC0=1 should occur in the same time sample for all of
    them)
         - 4 trailing reserved 0's
  */
 
  std::map<int, std::vector<int>> adc_map;
  std::map<int, std::vector<int>> tdc_map;
  std::map<int, std::vector<int>> cid_map;
  std::map<int, std::vector<int>> bc0_map;
  std::map<int, std::vector<int>> ce_map;
  // we need one output digi collection per pad
  std::vector<std::vector<trigscint::TrigScintQIEDigis>> out_digis;
  std::size_t n_modules =
      std::ranges::count_if(modules_used_, [](int x) { return x != 0; });
  // default construct (empty) vectors of digis separated into modules
  out_digis.resize(n_modules);
 
  // read in words from the output. line them up per channel and time sample.
  // channels are in the electronics ordering
  int word_length = ZCCMOutput::SAMPLE_WORD_LEN_BYTES;
  int num_messages =
      ((int)event_output.size() - ZCCMOutput::EVENTDATA_POS) / word_length;
 
  // with one message per time sample per lane, we expect nSample*nLanes
  // messages
  int n_lanes = n_channels_ / ZCCMOutput::NUM_CHAN_PER_LANE;
  int num_expected_messages = n_samp * n_lanes;
  if (num_messages != num_expected_messages)
    ldmx_log(warn) << "Unexpected stream length! Num messages is "
                   << num_messages << ", expect " << num_expected_messages;
 
  // read in a lane stream at a time with a while loop
  // operate on bytes, but i_word increments for each meassage i.e. each lane
  int i_word = 0;
  int start_lane = -1;
  int sample_nb = -1;
 
  while (i_word < num_messages) {  // update the position to read the word from
    uint word_pos = ZCCMOutput::EVENTDATA_POS + i_word * word_length;
 
    uint16_t empty =
        event_output.at(word_pos + ZCCMOutput::EMPTY_WORD_SAMPLE_WORD_POS);
    uint8_t lane = event_output.at(word_pos + ZCCMOutput::LANE_SAMPLE_WORD_POS);
    uint8_t flag =
        event_output.at(word_pos + ZCCMOutput::FLAGS_SAMPLE_WORD_POS);
 
    ldmx_log(debug) << "Start of message " << i_word << ".\n\tEmpty word is "
                    << std::bitset<16>(empty) << ", read at position "
                    << word_pos + ZCCMOutput::EMPTY_WORD_SAMPLE_WORD_POS
                    << ". \n\tFlag word is " << std::bitset<8>(flag)
                    << ", read at position "
                    << word_pos + ZCCMOutput::FLAGS_SAMPLE_WORD_POS
                    << ". \n\tLane is " << std::bitset<8>(lane)
                    << ", read at position "
                    << word_pos + ZCCMOutput::LANE_SAMPLE_WORD_POS << ".";
 
    if (start_lane == -1) {  // it is unset
      start_lane = lane;     // store the first one
      ldmx_log(debug) << "Set time sample start lane to " << start_lane;
    }
    // extract the flag info
    int cid{(flag >> ZCCMOutput::CAPID_POS_IN_FLAG) &
            Mask8<ZCCMOutput::CAPID_LEN_BITS>::M};
    ldmx_log(trace) << "Got Cap ID " << cid;
    bool bc0{static_cast<bool>((flag >> ZCCMOutput::BC0_POS_IN_FLAG) &
                               Mask8<ZCCMOutput::BC0_LEN_BITS>::M)};
    ldmx_log(trace) << "Got BC0 flag " << bc0;
    bool ce{static_cast<bool>((flag >> ZCCMOutput::CE_POS_IN_FLAG) &
                              Mask8<ZCCMOutput::CE_LEN_BITS>::M)};
    ldmx_log(trace) << "Got CE flag " << ce;
    int empty_bits{(flag >> ZCCMOutput::EMPTY_FLAG_WORD_POS_IN_FLAG) &
                   Mask8<ZCCMOutput::EMPTY_FLAG_WORD_LEN_BITS>::M};
    if (empty_bits)
      ldmx_log(fatal) << "Empty bits of flag not empty: " << empty_bits;
 
    // TODO: check that BC0 bit is aligned across all lanes
    // TODO: keep track of the CID cycling and flag when a CID is skipped
    // bool is_cid_unsync{static_cast<bool>((flags >>
    // ZCCMOutput::CID_UNSYNC_POS) &
    //                                       Mask8<ZCCMOutput::FLAG_SIZE_BITS>::M)};
 
    // how do we know we're at the next time sample?
    //  1. i_word has incremented by the number of lanes
    //     // i.e i_word % nLanes = 0
    //  2. we're seeing the first lane again
    //  it is good, then, to check that these agree.
 
    if (lane == start_lane)  // we have cycled (or just started)
      sample_nb++;
 
    uint8_t cid_val = cid;
 
    // get channel-by-channel info (ADC and TDC for this time sample)
    for (int i_c = 0; i_c < ZCCMOutput::NUM_CHAN_PER_LANE; i_c++) {
      if (i_word >= num_expected_messages) {
        ldmx_log(fatal)
            << "More words than expected! Breaking event data loop in sample "
            << sample_nb << " at lane = " << int(lane) << ", channel nb "
            << i_c;
        break;
      }
      uint8_t adc_val =
          event_output.at(word_pos + ZCCMOutput::ADC_SAMPLE_WORD_POS + i_c);
      uint8_t tdc_val =
          event_output.at(word_pos + ZCCMOutput::TDC_SAMPLE_WORD_POS + i_c);
      // define a unique elecID for each channel in the readout, comprising of
      // lane, module, channelNB then use that to look up bar ID in the the maps
      int module = module_map_[lane];
      int elec_id = 100 * lane + 10 * module + i_c;  // numbering scheme: LLMC
 
      ldmx_log(trace) << "got ADC value " << (unsigned)adc_val
                      << " and TDC value " << (unsigned)tdc_val
                      << " at channel idx " << i_c << " with elec id "
                      << elec_id;
      if (adc_map.find(elec_id) == adc_map.end()) {  // we have a new channel
        std::vector<int> adcs(n_samp, 0);
        adc_map.insert(std::pair<int, std::vector<int>>(elec_id, adcs));
      }
      adc_map[elec_id].at(sample_nb) = adc_val;
      // perhaps overly prudent to check for TDC and CID as well, might tag them
      // along on ADC
      if (tdc_map.find(elec_id) == tdc_map.end()) {  // we have a new channel
        std::vector<int> tdcs(n_samp, 0);
        tdc_map.insert(std::pair<int, std::vector<int>>(elec_id, tdcs));
      }
      tdc_map[elec_id].at(sample_nb) = tdc_val;
      if (cid_map.find(elec_id) == cid_map.end()) {  // we have a new channel
        std::vector<int> cids(n_samp, 0);
        cid_map.insert(std::pair<int, std::vector<int>>(elec_id, cids));
        std::vector<int> bc0s(n_samp, 0);
        bc0_map.insert(std::pair<int, std::vector<int>>(elec_id, bc0s));
        std::vector<int> ces(n_samp, 0);
        ce_map.insert(std::pair<int, std::vector<int>>(elec_id, ces));
      }
      cid_map[elec_id].at(sample_nb) = cid_val;
      bc0_map[elec_id].at(sample_nb) = bc0;
      ce_map[elec_id].at(sample_nb) = ce;
    }  // over channels
    ldmx_log(debug) << "Done with lane " << int(lane) << " which we think is "
                    << i_word % n_lanes << " in sample " << sample_nb;
 
    if (int(lane) != i_word % n_lanes)
      ldmx_log(fatal) << "Lane ordering has been messed up! Expect lane "
                      << i_word % n_lanes << ", but we got lane " << int(lane)
                      << " in sample " << sample_nb;
    // shift to next word
    i_word++;
  }  // while event data words left in the stream
 
  ldmx_log(debug) << "Done reading in header, ADC and TDC for event "
                  << event.getEventNumber();
 
  // Reading step done.
  /* -- make digis from all the info stored in maps -- */
  for (std::map<int, std::vector<int>>::iterator itr = adc_map.begin();
       itr != adc_map.end(); ++itr) {
    TrigScintQIEDigis digi;
    digi.setADC(itr->second);
    if (channel_map_.find(itr->first) == channel_map_.end()) {
      ldmx_log(fatal)
          << "Couldn't find the bar ID corresponding to electronics ID "
          << itr->first << "!! Skipping.";
      continue;
    }
    int bar = channel_map_[itr->first];
    digi.setElecID(itr->first);
    digi.setChanID(bar);
    int module = itr->first / 10 % 10;
    digi.setModuleID(module);
    int lane = itr->first / 100;
    digi.setLaneID(lane);
    digi.setTDC(tdc_map[itr->first]);
    digi.setCID(cid_map[itr->first]);
    digi.setBC0(bc0_map[itr->first]);
    digi.setCE(ce_map[itr->first]);
    if (bar == 0)
      ldmx_log(debug) << "for bar 0, got time since spill "
                      << digi.getTimeSinceSpill();
    out_digis[module].push_back(digi);
    ldmx_log(debug) << "Iterator points to key " << itr->first
                    << " and mapped channel supposedly  is " << bar;
    ldmx_log(debug) << "Made digi with elecID = " << digi.getElecID()
                    << ", barID = " << digi.getChanID() << ", third adc value "
                    << digi.getADC().at(2) << " and third tdc "
                    << digi.getTDC().at(2);
  }
 
  // name them as ordered
  for (uint i = 0; i < n_modules; i++)
    event.add(output_collection_ + Form("%i", i + 1), out_digis[i]);
}

References framework::Event::add(), trigscint::TrigScintQIEDigis::getADC(), trigscint::TrigScintQIEDigis::getChanID(), trigscint::TrigScintQIEDigis::getElecID(), trigscint::TrigScintQIEDigis::getTDC(), trigscint::TrigScintQIEDigis::getTimeSinceSpill(), trigscint::TrigScintQIEDigis::setADC(), trigscint::TrigScintQIEDigis::setBC0(), trigscint::TrigScintQIEDigis::setCE(), trigscint::TrigScintQIEDigis::setChanID(), trigscint::TrigScintQIEDigis::setCID(), trigscint::TrigScintQIEDigis::setElecID(), trigscint::TrigScintQIEDigis::setLaneID(), trigscint::TrigScintQIEDigis::setModuleID(), trigscint::TrigScintQIEDigis::setTDC(), and trigscint::ZCCMOutput::TIMESTAMP_POS.

Member Data Documentation

channel_map_

std::map<int, int> trigscint::ZCCMDecoder::channel_map_

private

Definition at line 42 of file ZCCMDecoder.h.

channel_map_file_

std::ifstream trigscint::ZCCMDecoder::channel_map_file_

private

Definition at line 41 of file ZCCMDecoder.h.

channel_map_file_name_

std::string trigscint::ZCCMDecoder::channel_map_file_name_

private

the channel mapping

Definition at line 40 of file ZCCMDecoder.h.

Referenced by configure().

input_collection_

std::string trigscint::ZCCMDecoder::input_collection_

private

Definition at line 49 of file ZCCMDecoder.h.

input_pass_name_

std::string trigscint::ZCCMDecoder::input_pass_name_

private

Definition at line 51 of file ZCCMDecoder.h.

is_real_data_

bool trigscint::ZCCMDecoder::is_real_data_ {true}

private

Definition at line 63 of file ZCCMDecoder.h.

{true};

module_map_

std::map<int, int> trigscint::ZCCMDecoder::module_map_

private

Definition at line 46 of file ZCCMDecoder.h.

module_map_file_

std::ifstream trigscint::ZCCMDecoder::module_map_file_

private

Definition at line 45 of file ZCCMDecoder.h.

module_map_file_name_

std::string trigscint::ZCCMDecoder::module_map_file_name_

private

the module mapping

Definition at line 44 of file ZCCMDecoder.h.

Referenced by configure().

modules_used_

int trigscint::ZCCMDecoder::modules_used_[4] = {0}

private

Definition at line 65 of file ZCCMDecoder.h.

{0};

n_channels_

int trigscint::ZCCMDecoder::n_channels_ {number_of_lanes_ * ZCCMOutput::NUM_CHAN_PER_LANE}

private

Definition at line 59 of file ZCCMDecoder.h.

{number_of_lanes_ * ZCCMOutput::NUM_CHAN_PER_LANE};

n_samples_

int trigscint::ZCCMDecoder::n_samples_ {70}

private

Definition at line 61 of file ZCCMDecoder.h.

{70};

number_of_lanes_

int trigscint::ZCCMDecoder::number_of_lanes_ {14}

private

Definition at line 54 of file ZCCMDecoder.h.

{14};

output_collection_

std::string trigscint::ZCCMDecoder::output_collection_

private

Definition at line 50 of file ZCCMDecoder.h.

---

The documentation for this class was generated from the following files:

• TrigScint/include/TrigScint/ZCCMDecoder.h
• TrigScint/src/TrigScint/ZCCMDecoder.cxx