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#ifndef DataFormats_MTDDetId_MTDDetId_h
#define DataFormats_MTDDetId_MTDDetId_h
#include "DataFormats/DetId/interface/DetId.h"
#include "DataFormats/ForwardDetId/interface/ForwardSubdetector.h"
#include <ostream>
/**
@class MTDDetId
@brief Detector identifier base class for the MIP Timing Layer.
bit 31-28: Detector Forward
bit 27-25: Subdetctor FastTiming
bit 24-23: MTD subdetector BTL/ETL
bit 22 : side (positive = 1, negative = 0)
bit 21-16: rod/ring sequential number
*/
class MTDDetId : public DetId {
public:
/** Enumerated type for Forward sub-deteector systems. */
enum SubDetector { subUNKNOWN = 0, FastTime = 1 };
/** Enumerated type for MTD sub-deteector systems. */
enum MTDType { typeUNKNOWN = 0, BTL = 1, ETL = 2 };
static const uint32_t kMTDsubdOffset = 23;
static const uint32_t kMTDsubdMask = 0x3;
static const uint32_t kZsideOffset = 22;
static const uint32_t kZsideMask = 0x1;
static const uint32_t kRodRingOffset = 16;
static const uint32_t kRodRingMask = 0x3F;
// ---------- Constructors, enumerated types ----------
/** Construct a null id */
MTDDetId() : DetId() { ; }
/** Construct from a raw value */
MTDDetId(const uint32_t& raw_id) : DetId(raw_id) { ; }
/** Construct from generic DetId */
MTDDetId(const DetId& det_id) : DetId(det_id.rawId()) { ; }
/** Construct and fill only the det and sub-det fields. */
MTDDetId(Detector det, int subdet) : DetId(det, subdet) { ; }
// ---------- Common methods ----------
/** Returns enumerated type specifying MTD sub-detector. */
inline SubDetector subDetector() const { return static_cast<MTDDetId::SubDetector>(subdetId()); }
/** Returns enumerated type specifying MTD sub-detector, i.e. BTL or ETL. */
inline int mtdSubDetector() const { return (id_ >> kMTDsubdOffset) & kMTDsubdMask; }
/** Returns MTD side, i.e. Z-=0 or Z+=1. */
inline int mtdSide() const { return (id_ >> kZsideOffset) & kZsideMask; }
/** Return MTD side, i.e. Z-=-1 or Z+=1. */
inline int zside() const { return (mtdSide() == 1 ? (1) : (-1)); }
/** Returns MTD rod/ring number. */
inline int mtdRR() const { return (id_ >> kRodRingOffset) & kRodRingMask; }
};
std::ostream& operator<<(std::ostream&, const MTDDetId&);
#endif // DataFormats_MTDDetId_MTDDetId_h
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