1 #ifndef ALIALTRORAWSTREAM_H
2 #define ALIALTRORAWSTREAM_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 ///////////////////////////////////////////////////////////////////////////////
10 /// This is a base class for reading raw data digits in Altro format
11 /// The class is able to read both old and new RCU trailer formats
12 /// One can switch between formats using fIsOldRCUFormat flag.
13 /// In case the Common Data Header is 7 32-bit words long, one
14 /// can use the fIsShortDataHeader flag.
16 ///////////////////////////////////////////////////////////////////////////////
22 class AliAltroRawStream: public TObject {
24 AliAltroRawStream(AliRawReader* rawReader);
25 virtual ~AliAltroRawStream();
28 virtual Bool_t Next();
30 Int_t GetDDLNumber() const { return fDDLNumber; } // Provide current DDL number
31 Int_t GetPrevDDLNumber() const { return fPrevDDLNumber; }// Provide previous DDL number
32 Bool_t IsNewDDLNumber() const {return (fDDLNumber != fPrevDDLNumber);};
33 Int_t GetRCUId() const { return fRCUId; } // Provide current RCU identifier
34 Int_t GetPrevRCUId() const { return fPrevRCUId; } // Provide previous RCU identifier
35 Bool_t IsNewRCUId() const {return (fRCUId != fPrevRCUId);};
36 Int_t GetHWAddress() const { return fHWAddress; } // Provide current hardware address
37 Int_t GetPrevHWAddress() const { return fPrevHWAddress; } // Provide previous hardware address
38 Bool_t IsNewHWAddress() const {return (fHWAddress != fPrevHWAddress) || IsNewDDLNumber();};
39 Int_t GetTime() const { return fTime; } // Provide index of current time bin
40 Int_t GetPrevTime() const { return fPrevTime; } // Provide index of previous time bin
41 Bool_t IsNewTime() const {return (fTime != fPrevTime) || IsNewHWAddress();};
42 Int_t GetSignal() const { return fSignal; } // Provide signal in ADC counts
43 Int_t GetTimeLength() const { return fTimeBunch; } // Provide total length of current time bunch
45 Bool_t GetRCUTrailerData(UChar_t*& data) const; // Provide a pointer to RCU trailer
46 Int_t GetRCUTrailerSize() const { return fRCUTrailerSize; } // Provide size of RCU trailer
48 void SelectRawData(Int_t detId); // Select raw data for specific detector id
49 void SelectRawData(const char *detName); // Select raw data for specific detector name
51 void SetNoAltroMapping(Bool_t flag) { fNoAltroMapping = flag; } // Specify whenever to use or not the altro mapping
52 void SetOldRCUFormat(Bool_t flag) { fIsOldRCUFormat = flag; } // Specify whenever to use or not the old RCU trailer format
53 void SetShortDataHeader(Bool_t flag) { fIsShortDataHeader = flag; } // Specify whenever to assume or not a short CDH format
55 void PrintDebug() const; // Print debug information in case of decoding errors
58 AliAltroRawStream(const AliAltroRawStream& stream);
59 AliAltroRawStream& operator = (const AliAltroRawStream& stream);
61 Bool_t fNoAltroMapping; // temporary flag in case of no altro mapping is provided
62 Short_t fSegmentation[3]; // temporary container for the dummy trailer, to be removed
64 Bool_t fIsOldRCUFormat; // flag used to select between old and new RCU trailer format
65 Bool_t fIsShortDataHeader; // flag used to select between normal and short CDH format
69 UShort_t GetNextWord();
71 Bool_t ReadDummyTrailer();
75 UInt_t Get32bitWord(Int_t &index);
77 Int_t fDDLNumber; // index of current DDL number
78 Int_t fPrevDDLNumber;// index of previous DDL number
79 Int_t fRCUId; // current RCU identifier
80 Int_t fPrevRCUId; // previous RCU identifier
81 Short_t fHWAddress; // current hardware address
82 Short_t fPrevHWAddress;// previous hardware address
83 Int_t fTime; // index of current time bin
84 Int_t fPrevTime; // index of previous time bin
85 Int_t fSignal; // signal in ADC counts
86 Int_t fTimeBunch; // total length of the current time bunch
88 AliRawReader* fRawReader; // object for reading the raw data
91 UChar_t* fData; // raw data
93 Int_t fPosition; // current (10 bit) position in fData
94 Int_t fCount; // counter of words to be read for current trailer
95 Int_t fBunchLength; // remaining number of signal bins in the current bunch
97 UChar_t* fRCUTrailerData; // pointer to RCU trailer data
98 Int_t fRCUTrailerSize; // size of RCU trailer data in bytes
100 ClassDef(AliAltroRawStream, 0) // base class for reading Altro raw digits