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a29c28b6 | 1 | /************************************************************************** |
2 | * Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
7bc140a5 | 16 | /* $Id$ */ |
17 | ||
a29c28b6 | 18 | // This class decodes the stream of ALTRO samples to extract |
19 | // the PHOS "digits" of current event. | |
20 | // | |
21 | // Typical use case: | |
22 | // AliRawReader* rf = new AliRawReaderDate("2006run2211.raw"); | |
b1a8a9cb | 23 | // AliPHOSRawDecoder dc(rf); |
a29c28b6 | 24 | // while (rf->NextEvent()) { |
a29c28b6 | 25 | // dc.SetOldRCUFormat(kTRUE); |
26 | // dc.SubtractPedestals(kTRUE); | |
27 | // while ( dc.NextDigit() ) { | |
28 | // Int_t module = dc.GetModule(); | |
29 | // Int_t column = dc.GetColumn(); | |
30 | // Int_t row = dc.GetRow(); | |
31 | // Double_t amplitude = dc.GetEnergy(); | |
32 | // Double_t time = dc.GetTime(); | |
33 | // Bool_t IsLowGain = dc.IsLowGain(); | |
34 | // .......... | |
35 | // } | |
36 | // } | |
37 | ||
38 | // Author: Boris Polichtchouk | |
39 | ||
40 | // --- ROOT system --- | |
b1a8a9cb | 41 | #include "TArrayI.h" |
a29c28b6 | 42 | |
43 | // --- AliRoot header files --- | |
44 | #include "AliPHOSRawDecoder.h" | |
45 | #include "AliPHOSPulseGenerator.h" | |
46 | ||
47 | ClassImp(AliPHOSRawDecoder) | |
48 | ||
49 | //----------------------------------------------------------------------------- | |
50 | AliPHOSRawDecoder::AliPHOSRawDecoder(): | |
14100b90 | 51 | fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1), |
52 | fLowGainFlag(kFALSE),fOverflow(kFALSE),fSamples(0),fTimes(0),fPulseGenerator(0) | |
a29c28b6 | 53 | { |
54 | //Default constructor. | |
55 | } | |
56 | ||
57 | //----------------------------------------------------------------------------- | |
467957dc | 58 | AliPHOSRawDecoder::AliPHOSRawDecoder(AliRawReader* rawReader, AliAltroMapping **mapping): |
14100b90 | 59 | fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1), |
60 | fLowGainFlag(kFALSE),fOverflow(kFALSE),fSamples(0),fTimes(0),fPulseGenerator(0) | |
a29c28b6 | 61 | { |
62 | //Construct a decoder object. | |
63 | //Is is user responsibility to provide next raw event | |
64 | //using AliRawReader::NextEvent(). | |
65 | ||
66 | fRawReader = rawReader; | |
467957dc | 67 | fCaloStream = new AliCaloRawStream(rawReader,"PHOS",mapping); |
a29c28b6 | 68 | fCaloStream->SetOldRCUFormat(kFALSE); |
b1a8a9cb | 69 | fSamples = new TArrayI(100); |
14100b90 | 70 | fTimes = new TArrayI(100); |
b1a8a9cb | 71 | fPulseGenerator = new AliPHOSPulseGenerator(); |
a29c28b6 | 72 | } |
73 | ||
74 | //----------------------------------------------------------------------------- | |
75 | AliPHOSRawDecoder::~AliPHOSRawDecoder() | |
76 | { | |
77 | //Destructor. | |
78 | ||
14100b90 | 79 | if(fCaloStream){ delete fCaloStream; fCaloStream=0;} |
80 | if(fSamples){ delete fSamples; fSamples=0 ;} | |
81 | if(fTimes){ delete fTimes; fTimes=0 ;} | |
82 | if(fPulseGenerator){ delete fPulseGenerator; fPulseGenerator=0 ;} | |
a29c28b6 | 83 | } |
84 | ||
85 | //----------------------------------------------------------------------------- | |
86 | AliPHOSRawDecoder::AliPHOSRawDecoder(const AliPHOSRawDecoder &phosDecoder ): | |
87 | fRawReader(phosDecoder.fRawReader),fCaloStream(phosDecoder.fCaloStream), | |
88 | fPedSubtract(phosDecoder.fPedSubtract), | |
89 | fEnergy(phosDecoder.fEnergy),fTime(phosDecoder.fTime), | |
90 | fModule(phosDecoder.fModule),fColumn(phosDecoder.fColumn), | |
56c9f64a | 91 | fRow(phosDecoder.fRow),fLowGainFlag(phosDecoder.fLowGainFlag), |
14100b90 | 92 | fOverflow(phosDecoder.fOverflow),fSamples(phosDecoder.fSamples), |
93 | fTimes(phosDecoder.fTimes),fPulseGenerator(phosDecoder.fPulseGenerator) | |
a29c28b6 | 94 | { |
95 | //Copy constructor. | |
96 | } | |
97 | ||
98 | //----------------------------------------------------------------------------- | |
99 | AliPHOSRawDecoder& AliPHOSRawDecoder::operator = (const AliPHOSRawDecoder &phosDecode) | |
100 | { | |
7bc140a5 | 101 | //Assignment operator. |
102 | ||
a29c28b6 | 103 | if(this != &phosDecode) { |
104 | fRawReader = phosDecode.fRawReader; | |
105 | ||
106 | if(fCaloStream) delete fCaloStream; | |
107 | fCaloStream = phosDecode.fCaloStream; | |
108 | ||
109 | fEnergy = phosDecode.fEnergy; | |
110 | fTime = phosDecode.fTime; | |
111 | fModule = phosDecode.fModule; | |
112 | fColumn = phosDecode.fColumn; | |
113 | fRow = phosDecode.fRow; | |
56c9f64a | 114 | fLowGainFlag = phosDecode.fLowGainFlag; |
14100b90 | 115 | fOverflow = phosDecode.fOverflow ; |
56c9f64a | 116 | |
b1a8a9cb | 117 | if(fSamples) delete fSamples; |
118 | fSamples = phosDecode.fSamples; | |
119 | ||
14100b90 | 120 | if(fTimes) delete fTimes; |
121 | fTimes = phosDecode.fTimes; | |
122 | ||
b1a8a9cb | 123 | if(fPulseGenerator) delete fPulseGenerator; |
124 | fPulseGenerator = phosDecode.fPulseGenerator; | |
a29c28b6 | 125 | } |
126 | ||
127 | return *this; | |
128 | } | |
129 | ||
130 | //----------------------------------------------------------------------------- | |
131 | ||
132 | Bool_t AliPHOSRawDecoder::NextDigit() | |
133 | { | |
134 | //Extract an energy deposited in the crystal, | |
135 | //crystal' position (module,column,row), | |
136 | //time and gain (high or low). | |
b1a8a9cb | 137 | |
a29c28b6 | 138 | AliCaloRawStream* in = fCaloStream; |
b1a8a9cb | 139 | |
a29c28b6 | 140 | Int_t iBin = 0; |
b1a8a9cb | 141 | Int_t mxSmps = fSamples->GetSize(); |
56c9f64a | 142 | Int_t tLength = 0; |
b1a8a9cb | 143 | fEnergy = -111; |
1267d56d | 144 | Float_t pedMean = 0; |
145 | Int_t nPed = 0; | |
146 | Float_t baseLine = 1.0; | |
14100b90 | 147 | const Int_t nPreSamples = 10; |
b1a8a9cb | 148 | |
149 | fSamples->Reset(); | |
14100b90 | 150 | while ( in->Next() ) { |
56c9f64a | 151 | |
152 | if(!tLength) { | |
153 | tLength = in->GetTimeLength(); | |
154 | if(tLength>mxSmps) { | |
155 | fSamples->Set(tLength); | |
156 | } | |
157 | } | |
158 | ||
159 | // Fit the full sample | |
160 | if(in->IsNewHWAddress() && iBin>0) { | |
161 | ||
162 | iBin=0; | |
163 | ||
164 | // Temporarily we take the energy as a maximum amplitude | |
165 | // and the pedestal from the 0th point (30 Aug 2006). | |
166 | // Time is not evaluated for the moment (12.01.2007). | |
167 | // Take is as a first time bin multiplied by the sample tick time | |
168 | ||
169 | if(fPedSubtract) | |
7b02b945 | 170 | if (nPed > 0) |
171 | fEnergy -= (Double_t)(pedMean/nPed); // pedestal subtraction | |
172 | else | |
173 | return kFALSE; | |
56c9f64a | 174 | |
175 | if(fLowGainFlag) | |
176 | fEnergy *= fPulseGenerator->GetRawFormatHighLowGainFactor(); // *16 | |
1267d56d | 177 | |
178 | if (fEnergy < baseLine) fEnergy = 0; | |
179 | ||
180 | pedMean = 0; | |
56c9f64a | 181 | return kTRUE; |
182 | } | |
183 | ||
184 | fLowGainFlag = in->IsLowGain(); | |
185 | fTime = fPulseGenerator->GetRawFormatTimeTrigger() * in->GetTime(); | |
186 | fModule = in->GetModule()+1; | |
1267d56d | 187 | fRow = in->GetRow() +1; |
56c9f64a | 188 | fColumn = in->GetColumn()+1; |
189 | ||
14100b90 | 190 | //Calculate pedestal if necessary |
191 | if(fPedSubtract && in->GetTime() < nPreSamples) { | |
1267d56d | 192 | pedMean += in->GetSignal(); |
193 | nPed++; | |
194 | } | |
56c9f64a | 195 | if((Double_t)in->GetSignal() > fEnergy) fEnergy = (Double_t)in->GetSignal(); |
14100b90 | 196 | iBin++ ; |
56c9f64a | 197 | |
198 | } // in.Next() | |
199 | ||
200 | return kFALSE; | |
a29c28b6 | 201 | } |