FEDHeader.cc

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#include "DataFormats/FEDRawData/interface/FEDHeader.h"
#include "DataFormats/FEDRawData/src/fed_header.h"


FEDHeader::FEDHeader(const unsigned char* header) :
  theHeader(reinterpret_cast<const fedh_t*>(header)) {}


FEDHeader::~FEDHeader() {}


uint8_t FEDHeader::triggerType() const {
  return FED_EVTY_EXTRACT(theHeader->eventid);
}


uint32_t FEDHeader::lvl1ID() const {
  return FED_LVL1_EXTRACT(theHeader->eventid);
}


uint16_t FEDHeader::bxID() const {
  return FED_BXID_EXTRACT(theHeader->sourceid);
}


uint16_t FEDHeader::sourceID() const {
  return FED_SOID_EXTRACT(theHeader->sourceid);
}


uint8_t FEDHeader::version() const {
  return FED_VERSION_EXTRACT(theHeader->sourceid);
}


bool FEDHeader::moreHeaders() const {
  return ( FED_MORE_HEADERS_EXTRACT(theHeader->sourceid) != 0 );
}


void FEDHeader::set(unsigned char* header,
            uint8_t triggerType,
            uint32_t lvl1ID,
            uint16_t bxID,
            uint16_t sourceID,
            uint8_t version,
            bool moreHeaders) {

  // FIXME: should check that input ranges are OK!!!
  fedh_t* h = reinterpret_cast<fedh_t*>(header);
  h->eventid =
    (FED_SLINK_START_MARKER << FED_HCTRLID_SHIFT) |
    ( (triggerType << FED_EVTY_SHIFT   ) & FED_EVTY_MASK    ) |
    ( (lvl1ID      << FED_LVL1_SHIFT   ) & FED_LVL1_MASK    );

  h->sourceid =
    ( (bxID        << FED_BXID_SHIFT   ) & FED_BXID_MASK    ) |
    ( (sourceID    << FED_SOID_SHIFT   ) & FED_SOID_MASK    ) |
    ( (version     << FED_VERSION_SHIFT) & FED_VERSION_MASK );

  if (moreHeaders)
    h->sourceid |= (FED_MORE_HEADERS_WIDTH << FED_MORE_HEADERS_SHIFT);
}


bool FEDHeader::check() const {
  return ( FED_HCTRLID_EXTRACT(theHeader->eventid) == FED_SLINK_START_MARKER );
}


const uint32_t FEDHeader::length = sizeof(fedh_t);