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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 */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | /////////////////////////////////////////////////////////////////////////////// | |
9 | /// | |
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. | |
15 | /// | |
16 | /////////////////////////////////////////////////////////////////////////////// | |
17 | ||
18 | #include <TObject.h> | |
19 | ||
20 | class AliRawReader; | |
21 | ||
22 | class AliAltroRawStream: public TObject { | |
23 | public : | |
24 | AliAltroRawStream(AliRawReader* rawReader); | |
25 | virtual ~AliAltroRawStream(); | |
26 | ||
27 | virtual void Reset(); | |
28 | virtual Bool_t Next(); | |
29 | ||
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 | |
44 | ||
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 | |
47 | ||
48 | void SelectRawData(Int_t detId); // Select raw data for specific detector id | |
49 | ||
50 | void SetNoAltroMapping(Bool_t flag) { fNoAltroMapping = flag; } // Specify whenever to use or not the altro mapping | |
51 | void SetOldRCUFormat(Bool_t flag) { fIsOldRCUFormat = flag; } // Specify whenever to use or not the old RCU trailer format | |
52 | void SetShortDataHeader(Bool_t flag) { fIsShortDataHeader = flag; } // Specify whenever to assume or not a short CDH format | |
53 | ||
54 | protected: | |
55 | AliAltroRawStream(const AliAltroRawStream& stream); | |
56 | AliAltroRawStream& operator = (const AliAltroRawStream& stream); | |
57 | ||
58 | Bool_t fNoAltroMapping; // temporary flag in case of no altro mapping is provided | |
59 | Short_t fSegmentation[3]; // temporary container for the dummy trailer, to be removed | |
60 | ||
61 | Bool_t fIsOldRCUFormat; // flag used to select between old and new RCU trailer format | |
62 | Bool_t fIsShortDataHeader; // flag used to select between normal and short CDH format | |
63 | ||
64 | private : | |
65 | ||
66 | UShort_t GetNextWord(); | |
67 | Bool_t ReadTrailer(); | |
68 | Bool_t ReadDummyTrailer(); | |
69 | void ReadBunch(); | |
70 | void ReadAmplitude(); | |
71 | Int_t GetPosition(); | |
72 | UInt_t Get32bitWord(Int_t &index); | |
73 | ||
74 | Int_t fDDLNumber; // index of current DDL number | |
75 | Int_t fPrevDDLNumber;// index of previous DDL number | |
76 | Int_t fRCUId; // current RCU identifier | |
77 | Int_t fPrevRCUId; // previous RCU identifier | |
78 | Short_t fHWAddress; // current hardware address | |
79 | Short_t fPrevHWAddress;// previous hardware address | |
80 | Int_t fTime; // index of current time bin | |
81 | Int_t fPrevTime; // index of previous time bin | |
82 | Int_t fSignal; // signal in ADC counts | |
83 | Int_t fTimeBunch; // total length of the current time bunch | |
84 | ||
85 | AliRawReader* fRawReader; // object for reading the raw data | |
86 | ||
87 | ||
88 | UChar_t* fData; // raw data | |
89 | ||
90 | Int_t fPosition; // current (10 bit) position in fData | |
91 | Int_t fCount; // counter of words to be read for current trailer | |
92 | Int_t fBunchLength; // remaining number of signal bins in the current bunch | |
93 | ||
94 | UChar_t* fRCUTrailerData; // pointer to RCU trailer data | |
95 | Int_t fRCUTrailerSize; // size of RCU trailer data in bytes | |
96 | ||
97 | ClassDef(AliAltroRawStream, 0) // base class for reading Altro raw digits | |
98 | }; | |
99 | ||
100 | #endif |