CSCDDUTrailer.h

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#ifndef EventFilter_CSCRawToDigi_CSCDDUTrailer_h
#define EventFilter_CSCRawToDigi_CSCDDUTrailer_h

#include <iostream>
#include <cstdint>
#include <cstring>  // bzero
#include "DataFormats/CSCDigi/interface/CSCDDUStatusDigi.h"

class CSCDDUTrailer {
public:
  CSCDDUTrailer() {
    bzero(this, sizeInWords() * 2);
    trailer2_1 = trailer2_2 = trailer2_4 = 0x8000;
    trailer2_3 = 0xFFFF;
  }
  CSCDDUTrailer(const CSCDDUStatusDigi& digi) { memcpy(this, digi.trailer(), sizeInWords() * 2); }

  void setFromBuffer(uint16_t const* buf) { memcpy(this, buf, sizeInWords() * 2); }

  static unsigned sizeInWords() { return 12; }

  bool check() const {
    //std::cout << std:: hex << "DDUTRAILER CHECK " << trailer2_1 << " "
    //      << trailer2_2  << " " << trailer2_3 << " "
    //      << trailer2_4 << std:: dec << std::endl;
    return trailer2_1 == 0x8000 && trailer2_2 == 0x8000 && trailer2_3 == 0xFFFF && trailer2_4 == 0x8000;
  }

  unsigned short* data() { return (unsigned short*)this; }

  //These are accessors to use for calling private members

  unsigned errorstat() const { return errorstat_; }
  unsigned wordcount() const { return word_count_; }
  void setWordCount(unsigned wordcount) { word_count_ = wordcount; }
  //@@ Tim: This seems wrong to me so just pull it
  //@@  void setDMBDAV(int dmbId) {dmb_full_ |= (1 << dmbId);}
  unsigned dmb_warn() const { return dmb_warn_; }
  unsigned dmb_full() const { return dmb_full_; }
  unsigned reserved() const { return whatever; }

private:
  unsigned trailer2_1 : 16;
  unsigned trailer2_2 : 16;
  unsigned trailer2_3 : 16;
  unsigned trailer2_4 : 16;

  unsigned dmb_warn_ : 16;
  unsigned dmb_full_ : 16;
  unsigned errorstat_ : 32;

  // DDU2004
  //  unsigned reserved_bits     : 4;
  //unsigned ddu_tts_status    : 4;
  //unsigned event_status      : 8;
  //unsigned event_crc         : 16;
  //

  //DDU2000
  //unsigned s_link_status  : 4;
  //unsigned crc_check_word : 16;
  //unsigned whatever       : 4;
  //unsigned event_status   : 8;
  //

  //the following bits change their meaning in DDU2004
  unsigned word1 : 4;
  unsigned word2 : 4;
  unsigned word3 : 4;
  unsigned word4 : 4;

  unsigned word5 : 4;
  unsigned word6 : 4;
  unsigned word7 : 4;
  unsigned word8 : 4;

  unsigned word_count_ : 24;
  unsigned whatever : 4;
  unsigned cms_directive_0xA : 4;
};
#endif