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"
19 class AliITSRawStreamSDD: public AliITSRawStream {
21 AliITSRawStreamSDD(AliRawReader* rawReader);
22 virtual ~AliITSRawStreamSDD() {};
24 virtual Bool_t Next();
26 virtual Int_t GetAnode() const {return fCoord1;}
27 virtual Int_t GetTime() const {return fCoord2;}
28 virtual Int_t GetChannel() const {return fChannel;}
29 virtual Int_t ReadJitter() const {return 0;}
30 virtual Int_t GetCarlosId() const {return fCarlosId;}
31 virtual void SetLowCarlosThreshold(Int_t th, Int_t i)
32 {fLowThreshold[i]=th;}
33 virtual void SetNCarlos(Int_t nC=12){fNCarlos=nC;}
34 static Int_t GetModuleNumber(UInt_t iDDL, UInt_t iModule)
35 {return fgkDDLModuleMap[iDDL][iModule];}
37 virtual Bool_t ResetSkip(Int_t ddln);
39 enum {kDDLsNumber = 24}; // number of DDLs in SDD
40 enum {kModulesPerDDL = 12}; // number of modules in each DDL
41 enum {kCarlosWords = 12}; // number of FIFOCARLOS Words
42 enum {kFifoWords = 4}; // number of FIFO Words
43 enum ESDDRawStreamError {
48 static const Int_t fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL]; // mapping DDL/module -> module number
50 virtual UInt_t ReadBits();
51 virtual Int_t DecompAmbra(Int_t value) const;
53 static const UInt_t fgkCodeLength[8]; //code length
55 UInt_t fData; // data read for file
56 Int_t fSkip[kDDLsNumber];// number of skipped words
57 Int_t fCarlosId; // carlos ID
58 Int_t fEventId; // event ID from header
59 Int_t fChannel; // current channel
60 Int_t fJitter; // jitter between L0 and pascal stop (x25ns)
61 ULong64_t fChannelData[kModulesPerDDL][2];// packed data for the 2 channels
62 UInt_t fLastBit[kModulesPerDDL][2]; // last filled bit in fChannelData
63 UInt_t fChannelCode[kModulesPerDDL][2];// current channel code
64 Bool_t fReadCode[kModulesPerDDL][2]; // next bits are code or data
65 UInt_t fReadBits[kModulesPerDDL][2]; // number of bits to read
66 Int_t fLowThreshold[2]; // low Carlos threshold
67 Int_t fNCarlos; // number of Carlos
68 Int_t fNfifo[kFifoWords];
69 Int_t fTimeBin[kModulesPerDDL][2]; // current timebin [ncarlos][nchannels]
70 Int_t fAnode[kModulesPerDDL][2]; // current anode [ncarlos][nchannels]
71 Int_t fDDL; //current ddl number
72 UInt_t fICarlosWord[kCarlosWords];
73 UInt_t fIFifoWord[kFifoWords];
74 Int_t fICountFoot[kModulesPerDDL];
75 Int_t fIdcd; // fifo counter, for debugging, to be removed when the code is stabilised
76 Int_t fEndWords;//number of 3f1f1f1f
77 Int_t fResetSkip; //if it is 0, the ResetSkip Funcion is called
78 ClassDef(AliITSRawStreamSDD, 6) // class for reading ITS SDD raw digits