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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 */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | /////////////////////////////////////////////////////////////////////////////// | |
9 | /// | |
10 | /// This class provides access to ITS SDD digits in raw data | |
11 | /// (default=simulated data). | |
12 | /////////////////////////////////////////////////////////////////////////////// | |
13 | ||
14 | #include "AliITSRawStream.h" | |
15 | #include "AliITSDDLModuleMapSDD.h" | |
16 | ||
17 | class AliRawReader; | |
18 | ||
19 | ||
20 | class AliITSRawStreamSDD: public AliITSRawStream { | |
21 | public : | |
22 | AliITSRawStreamSDD(AliRawReader* rawReader); | |
23 | AliITSRawStreamSDD(const AliITSRawStreamSDD& rs); | |
24 | AliITSRawStreamSDD& operator=(const AliITSRawStreamSDD& rs); | |
25 | virtual ~AliITSRawStreamSDD(); | |
26 | ||
27 | static UChar_t ReadBlockAttributes(AliRawReader* rawReader); | |
28 | static UInt_t ReadAMSamplFreqFromCDH(UChar_t cdhAttr){ | |
29 | if(cdhAttr&0x10) return 40; | |
30 | else return 20; | |
31 | } | |
32 | static AliITSRawStream* CreateRawStreamSDD(AliRawReader* rawReader, UChar_t attributes); | |
33 | static AliITSRawStream* CreateRawStreamSDD(AliRawReader* rawReader); | |
34 | ||
35 | virtual Bool_t Next(); | |
36 | ||
37 | virtual Int_t GetAnode() const {return fCoord1;} | |
38 | virtual Int_t GetTime() const {return fCoord2;} | |
39 | virtual Int_t GetChannel() const {return fChannel;} | |
40 | virtual Int_t GetEightBitSignal() const {return fEightBitSignal;} | |
41 | virtual Int_t GetCarlosId() const {return fCarlosId;} | |
42 | virtual Int_t GetEventId() const {return fEventId;} | |
43 | virtual Int_t GetJitter() const {return fJitter;} | |
44 | ||
45 | ||
46 | virtual void SetDecompressAmbra(Bool_t deco=kTRUE){ | |
47 | fDecompressAmbra=deco; | |
48 | } | |
49 | virtual void SetDDLModuleMap(AliITSDDLModuleMapSDD* ddlsdd){ | |
50 | if(!fDDLModuleMap) fDDLModuleMap=new AliITSDDLModuleMapSDD(); | |
51 | fDDLModuleMap->SetDDLMap(ddlsdd); | |
52 | } | |
53 | virtual void SetZeroSuppLowThreshold(Int_t iMod, Int_t iSid, Int_t th) | |
54 | {fLowThresholdArray[iMod][iSid]=th;} | |
55 | Int_t GetModuleNumber(UInt_t iDDL, UInt_t iModule) const { | |
56 | if(!fDDLModuleMap) return kSPDModules+1; // dummy module number if the DDL map is not set (case of DAs) | |
57 | return fDDLModuleMap->GetModuleNumber(iDDL,iModule); | |
58 | } | |
59 | virtual void Reset(); | |
60 | ||
61 | enum {kSDDModules = 260}; // number of SDD modules | |
62 | enum {kSPDModules = 240}; // number of SPD modules (used as offset) | |
63 | enum {kDDLsNumber = 24}; // number of DDLs in SDD | |
64 | enum {kModulesPerDDL = 12}; // number of modules in each DDL | |
65 | enum {kCarlosWords = 12}; // number of FIFOCARLOS Words | |
66 | enum {kFifoWords = 4}; // number of FIFO Words | |
67 | enum ESDDRawStreamError { | |
68 | kDataError = 1, | |
69 | kDataFormatErr = 2 | |
70 | }; | |
71 | protected: | |
72 | virtual Bool_t SkipHeaderWord(); | |
73 | virtual UInt_t ReadBits(); | |
74 | virtual Int_t DecompAmbra(Int_t value) const; | |
75 | ||
76 | static const UInt_t fgkCodeLength[8]; //code length | |
77 | ||
78 | AliITSDDLModuleMapSDD* fDDLModuleMap; // mapping DDL/module -> module number | |
79 | UInt_t fData; // data read for file | |
80 | Bool_t fResetSkip; // flag for end of DDL data | |
81 | ||
82 | Int_t fEventId; // event ID from header | |
83 | Int_t fCarlosId; // carlos ID | |
84 | Int_t fChannel; // current channel | |
85 | Int_t fJitter; // jitter between L0 and pascal stop (x25ns) | |
86 | ULong64_t fChannelData[kModulesPerDDL][2];// packed data for the 2 channels | |
87 | UInt_t fLastBit[kModulesPerDDL][2]; // last filled bit in fChannelData | |
88 | UInt_t fChannelCode[kModulesPerDDL][2];// current channel code | |
89 | Bool_t fReadCode[kModulesPerDDL][2]; // next bits are code or data | |
90 | UInt_t fReadBits[kModulesPerDDL][2]; // number of bits to read | |
91 | Int_t fLowThresholdArray[kSDDModules][2]; // array with low thresholds for all modules | |
92 | ||
93 | Int_t fNfifo[kFifoWords]; // FIFO number | |
94 | Int_t fTimeBin[kModulesPerDDL][2]; // current timebin [ncarlos][nchannels] | |
95 | Int_t fAnode[kModulesPerDDL][2]; // current anode [ncarlos][nchannels] | |
96 | UInt_t fICarlosWord[kCarlosWords]; // Carlos words | |
97 | UInt_t fIFifoWord[kFifoWords]; // FIFO words | |
98 | Int_t fICountFoot[kModulesPerDDL]; // counter for carlos footer words | |
99 | Int_t fEightBitSignal; // signal at 8 bit | |
100 | Bool_t fDecompressAmbra; //flag to switch off decompression | |
101 | ||
102 | ClassDef(AliITSRawStreamSDD, 14) // class for reading ITS SDD raw digits | |
103 | }; | |
104 | ||
105 | #endif |