08-mar-2006 NvE Time offset correction in IceF2k extended to allow also a user define...
[u/mrichter/AliRoot.git] / FMD / AliFMDRawReader.cxx
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e802be3e 1/**************************************************************************
2 * Copyright(c) 1998-1999, 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//____________________________________________________________________
19//
20// Class to read ADC values from a AliRawReader object.
21//
7684b53c 22// This class uses the AliFMDRawStreamer class to read the ALTRO
23// formatted data.
24//
25// +-------+
26// | TTask |
27// +-------+
28// ^
29// |
30// +-----------------+ <<references>> +--------------+
31// | AliFMDRawReader |<>----------------| AliRawReader |
32// +-----------------+ +--------------+
33// | ^
34// | <<uses>> |
35// V |
36// +-----------------+ <<uses>> |
37// | AliFMDRawStream |------------------------+
38// +-----------------+
39// |
40// V
41// +----------------+
42// | AliAltroStream |
43// +----------------+
44//
56b1929b 45#include <AliLog.h> // ALILOG_H
1a1fdef7 46#include "AliFMDParameters.h" // ALIFMDPARAMETERS_H
e802be3e 47#include "AliFMDDigit.h" // ALIFMDDIGIT_H
48#include "AliFMDRawStream.h" // ALIFMDRAWSTREAM_H
49#include "AliRawReader.h" // ALIRAWREADER_H
50#include "AliFMDRawReader.h" // ALIFMDRAWREADER_H
56b1929b 51#include <TArrayI.h> // ROOT_TArrayI
1a1fdef7 52#include <TTree.h> // ROOT_TTree
53#include <TClonesArray.h> // ROOT_TClonesArray
e802be3e 54
55//____________________________________________________________________
925e6570 56ClassImp(AliFMDRawReader)
1a1fdef7 57#if 0
58 ; // This is here to keep Emacs for indenting the next line
59#endif
e802be3e 60
61//____________________________________________________________________
1a1fdef7 62AliFMDRawReader::AliFMDRawReader(AliRawReader* reader, TTree* tree)
e802be3e 63 : TTask("FMDRawReader", "Reader of Raw ADC values from the FMD"),
1a1fdef7 64 fTree(tree),
65 fReader(reader),
66 fSampleRate(1)
e802be3e 67{
56b1929b 68 // Default CTOR
1a1fdef7 69 AliFMDParameters* pars = AliFMDParameters::Instance();
70 fSampleRate = pars->GetSampleRate();
e802be3e 71}
72
73
74//____________________________________________________________________
75void
76AliFMDRawReader::Exec(Option_t*)
77{
56b1929b 78 // Read raw data into the digits array
e802be3e 79 if (!fReader->ReadHeader()) {
80 Error("ReadAdcs", "Couldn't read header");
81 return;
82 }
83
1a1fdef7 84 Int_t n = 0;
85 TClonesArray* array = new TClonesArray("AliFMDDigit");
86 fTree->Branch("FMD", &array);
87
e802be3e 88 // Use AliAltroRawStream to read the ALTRO format. No need to
89 // reinvent the wheel :-)
90 AliFMDRawStream input(fReader, fSampleRate);
91 // Select FMD DDL's
1a1fdef7 92 fReader->Select(AliFMDParameters::kBaseDDL >> 8);
e802be3e 93
94 Int_t oldDDL = -1;
95 Int_t count = 0;
96 UShort_t detector = 1; // Must be one here
97 UShort_t oldDetector = 0;
98 Bool_t next = kTRUE;
99
100 // local Cache
101 TArrayI counts(10);
102 counts.Reset(-1);
103
104 // Loop over data in file
105 while (next) {
106 next = input.Next();
107
108 count++;
109 Int_t ddl = fReader->GetDDLID();
110 if (ddl != oldDDL || input.IsNewStrip() || !next) {
111 // Make a new digit, if we have some data (oldDetector == 0,
112 // means that we haven't really read anything yet - that is,
113 // it's the first time we get here).
114 if (oldDetector > 0) {
115 // Got a new strip.
116 AliDebug(10, Form("Add a new strip: FMD%d%c[%2d,%3d] "
117 "(current: FMD%d%c[%2d,%3d])",
118 oldDetector, input.PrevRing(),
119 input.PrevSector() , input.PrevStrip(),
120 detector , input.Ring(), input.Sector(),
121 input.Strip()));
1a1fdef7 122 new ((*array)[n]) AliFMDDigit(oldDetector,
123 input.PrevRing(),
124 input.PrevSector(),
125 input.PrevStrip(),
126 counts[0], counts[1], counts[2]);
127 n++;
e802be3e 128#if 0
129 AliFMDDigit* digit =
130 static_cast<AliFMDDigit*>(fFMD->Digits()->
131 UncheckedAt(fFMD->GetNdigits()-1));
132#endif
133 }
134
135 if (!next) {
136 AliDebug(10, Form("Read %d channels for FMD%d",
137 count + 1, detector));
138 break;
139 }
140
141
142 // If we got a new DDL, it means we have a new detector.
143 if (ddl != oldDDL) {
144 if (detector != 0)
145 AliDebug(10, Form("Read %d channels for FMD%d",
146 count + 1, detector));
147 // Reset counts, and update the DDL cache
148 count = 0;
149 oldDDL = ddl;
150 // Check that we're processing a FMD detector
151 Int_t detId = fReader->GetDetectorID();
1a1fdef7 152 if (detId != (AliFMDParameters::kBaseDDL >> 8)) {
e802be3e 153 Error("ReadAdcs", "Detector ID %d != %d",
1a1fdef7 154 detId, (AliFMDParameters::kBaseDDL >> 8));
e802be3e 155 break;
156 }
157 // Figure out what detector we're deling with
158 oldDetector = detector;
159 switch (ddl) {
160 case 0: detector = 1; break;
161 case 1: detector = 2; break;
162 case 2: detector = 3; break;
163 default:
164 Error("ReadAdcs", "Unknown DDL 0x%x for FMD", ddl);
165 return;
166 }
167 AliDebug(10, Form("Reading ADCs for 0x%x - That is FMD%d",
168 fReader->GetEquipmentId(), detector));
169 }
170 counts.Reset(-1);
171 }
172
173 counts[input.Sample()] = input.Count();
174
175 AliDebug(10, Form("ADC of FMD%d%c[%2d,%3d] += %d",
176 detector, input.Ring(), input.Sector(),
177 input.Strip(), input.Count()));
178 oldDetector = detector;
179 }
1a1fdef7 180 fTree->Fill();
e802be3e 181 return;
182
183}
184
185//____________________________________________________________________
186//
187// EOF
188//