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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 | ||
16 | /* $Id$ */ | |
17 | ||
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"); | |
23 | // AliPHOSRawDecoder dc(rf); | |
24 | // while (rf->NextEvent()) { | |
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 --- | |
41 | #include "TArrayI.h" | |
42 | ||
43 | // --- AliRoot header files --- | |
44 | #include "AliPHOSRawDecoder.h" | |
45 | #include "AliPHOSPulseGenerator.h" | |
46 | ||
47 | ClassImp(AliPHOSRawDecoder) | |
48 | ||
49 | //----------------------------------------------------------------------------- | |
50 | AliPHOSRawDecoder::AliPHOSRawDecoder(): | |
51 | fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1),fLowGainFlag(kFALSE),fSamples(0),fPulseGenerator(0) | |
52 | { | |
53 | //Default constructor. | |
54 | } | |
55 | ||
56 | //----------------------------------------------------------------------------- | |
57 | AliPHOSRawDecoder::AliPHOSRawDecoder(AliRawReader* rawReader, AliAltroMapping **mapping): | |
58 | fRawReader(0),fCaloStream(0),fPedSubtract(kFALSE),fEnergy(-111),fTime(-111),fModule(-1),fColumn(-1),fRow(-1),fLowGainFlag(kFALSE),fSamples(0),fPulseGenerator(0) | |
59 | { | |
60 | //Construct a decoder object. | |
61 | //Is is user responsibility to provide next raw event | |
62 | //using AliRawReader::NextEvent(). | |
63 | ||
64 | fRawReader = rawReader; | |
65 | fCaloStream = new AliCaloRawStream(rawReader,"PHOS",mapping); | |
66 | fCaloStream->SetOldRCUFormat(kFALSE); | |
67 | fSamples = new TArrayI(100); | |
68 | fPulseGenerator = new AliPHOSPulseGenerator(); | |
69 | } | |
70 | ||
71 | //----------------------------------------------------------------------------- | |
72 | AliPHOSRawDecoder::~AliPHOSRawDecoder() | |
73 | { | |
74 | //Destructor. | |
75 | ||
76 | if(fCaloStream) delete fCaloStream; | |
77 | if(fSamples) delete fSamples; | |
78 | if(fPulseGenerator) delete fPulseGenerator; | |
79 | } | |
80 | ||
81 | //----------------------------------------------------------------------------- | |
82 | AliPHOSRawDecoder::AliPHOSRawDecoder(const AliPHOSRawDecoder &phosDecoder ): | |
83 | fRawReader(phosDecoder.fRawReader),fCaloStream(phosDecoder.fCaloStream), | |
84 | fPedSubtract(phosDecoder.fPedSubtract), | |
85 | fEnergy(phosDecoder.fEnergy),fTime(phosDecoder.fTime), | |
86 | fModule(phosDecoder.fModule),fColumn(phosDecoder.fColumn), | |
87 | fRow(phosDecoder.fRow),fLowGainFlag(phosDecoder.fLowGainFlag), | |
88 | fSamples(phosDecoder.fSamples), | |
89 | fPulseGenerator(phosDecoder.fPulseGenerator) | |
90 | { | |
91 | //Copy constructor. | |
92 | } | |
93 | ||
94 | //----------------------------------------------------------------------------- | |
95 | AliPHOSRawDecoder& AliPHOSRawDecoder::operator = (const AliPHOSRawDecoder &phosDecode) | |
96 | { | |
97 | //Assignment operator. | |
98 | ||
99 | if(this != &phosDecode) { | |
100 | fRawReader = phosDecode.fRawReader; | |
101 | ||
102 | if(fCaloStream) delete fCaloStream; | |
103 | fCaloStream = phosDecode.fCaloStream; | |
104 | ||
105 | fEnergy = phosDecode.fEnergy; | |
106 | fTime = phosDecode.fTime; | |
107 | fModule = phosDecode.fModule; | |
108 | fColumn = phosDecode.fColumn; | |
109 | fRow = phosDecode.fRow; | |
110 | fLowGainFlag = phosDecode.fLowGainFlag; | |
111 | ||
112 | if(fSamples) delete fSamples; | |
113 | fSamples = phosDecode.fSamples; | |
114 | ||
115 | if(fPulseGenerator) delete fPulseGenerator; | |
116 | fPulseGenerator = phosDecode.fPulseGenerator; | |
117 | } | |
118 | ||
119 | return *this; | |
120 | } | |
121 | ||
122 | //----------------------------------------------------------------------------- | |
123 | ||
124 | Bool_t AliPHOSRawDecoder::NextDigit() | |
125 | { | |
126 | //Extract an energy deposited in the crystal, | |
127 | //crystal' position (module,column,row), | |
128 | //time and gain (high or low). | |
129 | ||
130 | AliCaloRawStream* in = fCaloStream; | |
131 | ||
132 | Int_t iBin = 0; | |
133 | Int_t mxSmps = fSamples->GetSize(); | |
134 | Int_t tLength = 0; | |
135 | fEnergy = -111; | |
136 | Float_t pedMean = 0; | |
137 | Int_t nPed = 0; | |
138 | Float_t baseLine = 1.0; | |
139 | const Float_t nPreSamples = 10; | |
140 | ||
141 | fSamples->Reset(); | |
142 | while ( in->Next() ) { | |
143 | ||
144 | if(!tLength) { | |
145 | tLength = in->GetTimeLength(); | |
146 | if(tLength>mxSmps) { | |
147 | fSamples->Set(tLength); | |
148 | } | |
149 | } | |
150 | ||
151 | // Fit the full sample | |
152 | if(in->IsNewHWAddress() && iBin>0) { | |
153 | ||
154 | iBin=0; | |
155 | ||
156 | // Temporarily we take the energy as a maximum amplitude | |
157 | // and the pedestal from the 0th point (30 Aug 2006). | |
158 | // Time is not evaluated for the moment (12.01.2007). | |
159 | // Take is as a first time bin multiplied by the sample tick time | |
160 | ||
161 | if(fPedSubtract) | |
162 | fEnergy -= (Double_t)(pedMean/nPed); // "pedestal subtraction" | |
163 | ||
164 | if(fLowGainFlag) | |
165 | fEnergy *= fPulseGenerator->GetRawFormatHighLowGainFactor(); // *16 | |
166 | ||
167 | if (fEnergy < baseLine) fEnergy = 0; | |
168 | ||
169 | pedMean = 0; | |
170 | return kTRUE; | |
171 | } | |
172 | ||
173 | fLowGainFlag = in->IsLowGain(); | |
174 | fTime = fPulseGenerator->GetRawFormatTimeTrigger() * in->GetTime(); | |
175 | fModule = in->GetModule()+1; | |
176 | fRow = in->GetRow() +1; | |
177 | fColumn = in->GetColumn()+1; | |
178 | ||
179 | // Fill array with samples | |
180 | iBin++; | |
181 | if(tLength-iBin < nPreSamples) { | |
182 | pedMean += in->GetSignal(); | |
183 | nPed++; | |
184 | } | |
185 | fSamples->AddAt(in->GetSignal(),tLength-iBin); | |
186 | if((Double_t)in->GetSignal() > fEnergy) fEnergy = (Double_t)in->GetSignal(); | |
187 | ||
188 | } // in.Next() | |
189 | ||
190 | return kFALSE; | |
191 | } |