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#ifndef DataFormats_FEDRawData_FEDTrailer_h
#define DataFormats_FEDRawData_FEDTrailer_h
/** \class FEDTrailer
* Helper class to interpret/create FED trailer words.
*
* \author N. Amapane - CERN, R. Mommsen - FNAL
*/
#include <cstdint>
struct fedt_struct;
class FEDTrailer {
public:
/// Constructor
FEDTrailer(const unsigned char* trailer);
/// Destructor
virtual ~FEDTrailer();
/// The length of the event fragment counted in 64-bit words including header and trailer
uint32_t fragmentLength() const;
/// Cyclic Redundancy Code of the event fragment including header and trailer
uint16_t crc() const;
/// Event fragment status information
uint8_t evtStatus() const;
/// Current value of the Trigger Throttling System bits
uint8_t ttsBits() const;
/// 0 -> the current trailer word is the last one.
/// 1 -> other trailer words can follow
bool moreTrailers() const;
/// True if the CRC value has been modified by the S-link sender card
bool crcModified() const;
/// True if the FRL has detected a transmission error over the s-link cable
bool slinkError() const;
/// True if the FED_ID given by the FED is not the one expected by the FRL
bool wrongFedId() const;
/// Check that the trailer is OK
bool check() const;
/// Return the word containing the consistency checks
uint32_t conscheck() const;
/// Set all fields in the trailer
static void set(
unsigned char* trailer, uint32_t lenght, uint16_t crc, uint8_t evt_stat, uint8_t tts, bool moreTrailers = false);
static const uint32_t length;
private:
const fedt_struct* theTrailer;
};
#endif // DataFormats_FEDRawData_FEDTrailer_h
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