1 #ifndef ALIITSRAWSTREAMSDD_H
2 #define ALIITSRAWSTREAMSDD_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 ///////////////////////////////////////////////////////////////////////////////
10 /// This class provides access to ITS SDD digits in raw data
11 /// (default=simulated data).
12 ///////////////////////////////////////////////////////////////////////////////
14 #include "AliITSRawStream.h"
15 #include "AliITSDDLModuleMapSDD.h"
20 class AliITSRawStreamSDD: public AliITSRawStream {
22 AliITSRawStreamSDD(AliRawReader* rawReader);
23 AliITSRawStreamSDD(const AliITSRawStreamSDD& rs);
24 AliITSRawStreamSDD& operator=(const AliITSRawStreamSDD& rs);
25 virtual ~AliITSRawStreamSDD();
27 virtual Bool_t Next();
29 virtual Int_t GetAnode() const {return fCoord1;}
30 virtual Int_t GetTime() const {return fCoord2;}
31 virtual Int_t GetChannel() const {return fChannel;}
32 virtual Int_t GetEightBitSignal() const {return fEightBitSignal;}
33 virtual Int_t ReadJitter() const {return 0;}
34 virtual Int_t GetCarlosId() const {return fCarlosId;}
35 virtual Int_t GetEventId() const {return fEventId;}
37 virtual void SetDecompressAmbra(Bool_t deco=kTRUE){
38 fDecompressAmbra=deco;
40 virtual void SetDDLModuleMap(AliITSDDLModuleMapSDD* ddlsdd){fDDLModuleMap->SetDDLMap(ddlsdd);}
41 virtual void SetLowCarlosThreshold(Int_t th, Int_t i)
42 {fLowThreshold[i]=th;}
43 virtual void SetZeroSuppLowThreshold(Int_t iMod, Int_t iSid, Int_t th)
44 {fLowThresholdArray[iMod][iSid]=th;}
45 Int_t GetModuleNumber(UInt_t iDDL, UInt_t iModule) const {
46 return fDDLModuleMap->GetModuleNumber(iDDL,iModule);
50 enum {kSDDModules = 260}; // number of SDD modules
51 enum {kSPDModules = 240}; // number of SPD modules (used as offset)
52 enum {kDDLsNumber = 24}; // number of DDLs in SDD
53 enum {kModulesPerDDL = 12}; // number of modules in each DDL
54 enum {kCarlosWords = 12}; // number of FIFOCARLOS Words
55 enum {kFifoWords = 4}; // number of FIFO Words
56 enum ESDDRawStreamError {
61 virtual Bool_t SkipHeaderWord();
62 virtual UInt_t ReadBits();
63 virtual Int_t DecompAmbra(Int_t value) const;
65 static const UInt_t fgkCodeLength[8]; //code length
67 AliITSDDLModuleMapSDD* fDDLModuleMap; // mapping DDL/module -> module number
68 UInt_t fData; // data read for file
69 Int_t fSkip[kDDLsNumber];// obsolete -- needed to compile AliITSRawStreamSDDv2
70 Int_t fEventId; // event ID from header
71 Int_t fCarlosId; // carlos ID
72 Int_t fChannel; // current channel
73 Int_t fJitter; // jitter between L0 and pascal stop (x25ns)
74 ULong64_t fChannelData[kModulesPerDDL][2];// packed data for the 2 channels
75 UInt_t fLastBit[kModulesPerDDL][2]; // last filled bit in fChannelData
76 UInt_t fChannelCode[kModulesPerDDL][2];// current channel code
77 Bool_t fReadCode[kModulesPerDDL][2]; // next bits are code or data
78 UInt_t fReadBits[kModulesPerDDL][2]; // number of bits to read
79 Int_t fLowThresholdArray[kSDDModules][2]; // array with low thresholds for all modules
80 Int_t fLowThreshold[2]; // obsolete -- needed to compile AliITSRawStreamSDDv2
81 Int_t fNfifo[kFifoWords]; // FIFO number
82 Int_t fTimeBin[kModulesPerDDL][2]; // current timebin [ncarlos][nchannels]
83 Int_t fAnode[kModulesPerDDL][2]; // current anode [ncarlos][nchannels]
84 UInt_t fICarlosWord[kCarlosWords]; // Carlos words
85 UInt_t fIFifoWord[kFifoWords]; // FIFO words
86 Int_t fICountFoot[kModulesPerDDL]; // counter for carlos footer words
87 Int_t fEightBitSignal; // signal at 8 bit
88 Bool_t fDecompressAmbra; //flag to switch off decompression
90 ClassDef(AliITSRawStreamSDD, 13) // class for reading ITS SDD raw digits