Small addition to the altro raw stream decoder in order to handle correctly altro...
[u/mrichter/AliRoot.git] / RAW / AliAltroRawStream.h
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3ea47630 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
7e18047e 11/// The class is able to read both old and new RCU trailer formats
1e984421 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.
3ea47630 15///
16///////////////////////////////////////////////////////////////////////////////
17
18#include <TObject.h>
19
20class AliRawReader;
21
3ea47630 22class AliAltroRawStream: public TObject {
23 public :
24 AliAltroRawStream(AliRawReader* rawReader);
25 virtual ~AliAltroRawStream();
26
3a291af4 27 virtual void Reset();
28 virtual Bool_t Next();
3ea47630 29
cf4af8c7 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
5e6235b5 47
e7fd2555 48 void SelectRawData(Int_t detId); // Select raw data for specific detector id
49
7e18047e 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
1e984421 52 void SetShortDataHeader(Bool_t flag) { fIsShortDataHeader = flag; } // Specify whenever to assume or not a short CDH format
7e18047e 53
3ea47630 54 protected:
3a291af4 55 AliAltroRawStream(const AliAltroRawStream& stream);
56 AliAltroRawStream& operator = (const AliAltroRawStream& stream);
57
e7fd2555 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
7e18047e 61 Bool_t fIsOldRCUFormat; // flag used to select between old and new RCU trailer format
1e984421 62 Bool_t fIsShortDataHeader; // flag used to select between normal and short CDH format
7e18047e 63
e7fd2555 64 private :
3a291af4 65
e7fd2555 66 UShort_t GetNextWord();
67 Bool_t ReadTrailer();
68 Bool_t ReadDummyTrailer();
69 void ReadBunch();
70 void ReadAmplitude();
71 Int_t GetPosition();
5e6235b5 72 UInt_t Get32bitWord(Int_t &index);
e7fd2555 73
74 Int_t fDDLNumber; // index of current DDL number
5e6235b5 75 Int_t fPrevDDLNumber;// index of previous DDL number
76 Int_t fRCUId; // current RCU identifier
77 Int_t fPrevRCUId; // previous RCU identifier
3a291af4 78 Short_t fHWAddress; // current hardware address
79 Short_t fPrevHWAddress;// previous hardware address
3ea47630 80 Int_t fTime; // index of current time bin
e7fd2555 81 Int_t fPrevTime; // index of previous time bin
3ea47630 82 Int_t fSignal; // signal in ADC counts
634692a1 83 Int_t fTimeBunch; // total length of the current time bunch
3ea47630 84
85 AliRawReader* fRawReader; // object for reading the raw data
86
3a291af4 87
e7fd2555 88 UChar_t* fData; // raw data
3ea47630 89
3ea47630 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
5e6235b5 94 UChar_t* fRCUTrailerData; // pointer to RCU trailer data
95 Int_t fRCUTrailerSize; // size of RCU trailer data in bytes
96
3ea47630 97 ClassDef(AliAltroRawStream, 0) // base class for reading Altro raw digits
98};
99
100#endif