New Raw Data format implemented
[u/mrichter/AliRoot.git] / VZERO / AliVZERORawStream.cxx
CommitLineData
2eb38194 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///////////////////////////////////////////////////////////////////////////////
17///
18/// This is a class for reading the VZERO DDL raw data
19/// The format of the raw data corresponds to the one
20/// implemented in AliVZEROBuffer class.
21///
22///////////////////////////////////////////////////////////////////////////////
23
24#include "AliVZERORawStream.h"
25#include "AliRawReader.h"
26#include "AliLog.h"
27#include "AliDAQ.h"
28
29ClassImp(AliVZERORawStream)
30
31//_____________________________________________________________________________
32AliVZERORawStream::AliVZERORawStream(AliRawReader* rawReader) :
726d762c 33 fTrigger(0),
34 fTriggerMask(0),
2eb38194 35 fPosition(-1),
36 fRawReader(rawReader),
37 fData(NULL)
38{
39 // create an object to read VZERO raw data
40 //
41 // select the raw data corresponding to
42 // the VZERO detector id
43 fRawReader->Reset();
44 AliDebug(1,Form("Selecting raw data for detector %d",AliDAQ::DetectorID("VZERO")));
45 fRawReader->Select("VZERO");
726d762c 46
47 // Initalize the containers
48 for(Int_t i = 0; i < kNChannels; i++) {
49 fTime[i] = fWidth[i] = 0;
50 for(Int_t j = 0; j < kNEvOfInt; j++) {
51 fADC[i][j] = 0;
52 fIsInt[i][j] = fIsBB[i][j] = fIsBG[i][j] = kFALSE;
53 }
54 fBBScalers[i] = fBGScalers[i] = 0;
55 for(Int_t j = 0; j < kNBunches; j++) {
56 fChargeMB[i][j] = 0;
57 fIsIntMB[i][j] = fIsBBMB[i][j] = fIsBGMB[i][j] = kFALSE;
58 }
59 }
60 for(Int_t i = 0; i < kNScalers; i++) fScalers[i] = 0;
61 for(Int_t i = 0; i < kNBunches; i++) fBunchNumbers[i] = 0;
2eb38194 62}
63
64//_____________________________________________________________________________
65AliVZERORawStream::~AliVZERORawStream()
66{
67 // destructor
68}
69
70//_____________________________________________________________________________
71void AliVZERORawStream::Reset()
72{
73 // reset raw stream params
74
726d762c 75 // Reinitalize the containers
76 for(Int_t i = 0; i < kNChannels; i++) {
77 fTime[i] = fWidth[i] = 0;
78 for(Int_t j = 0; j < kNEvOfInt; j++) {
79 fADC[i][j] = 0;
80 fIsInt[i][j] = fIsBB[i][j] = fIsBG[i][j] = kFALSE;
81 }
82 fBBScalers[i] = fBGScalers[i] = 0;
83 for(Int_t j = 0; j < kNBunches; j++) {
84 fChargeMB[i][j] = 0;
85 fIsIntMB[i][j] = fIsBBMB[i][j] = fIsBGMB[i][j] = kFALSE;
86 }
87 }
88 for(Int_t i = 0; i < kNScalers; i++) fScalers[i] = 0;
89 for(Int_t i = 0; i < kNBunches; i++) fBunchNumbers[i] = 0;
90
91 fTrigger = fTriggerMask = 0;
92 fPosition = -1;
93 fData = NULL;
2eb38194 94
95 if (fRawReader) fRawReader->Reset();
96}
97
98//_____________________________________________________________________________
99Bool_t AliVZERORawStream::Next()
100{
101 // read next digit from the VZERO raw data stream
102 // return kFALSE in case of error or no digits left
103
726d762c 104 if (fPosition >= 0) return kFALSE;
105
106 if (!fRawReader->ReadNextData(fData)) return kFALSE;
107 if (fRawReader->GetDataSize() == 0) return kFALSE;
108
109 if (fRawReader->GetDataSize() != 5488) {
110 fRawReader->AddFatalErrorLog(kRawDataSizeErr,Form("size %d != 5488",fRawReader->GetDataSize()));
111 AliWarning(Form("Wrong VZERO raw data size: %d, expected 5488 bytes!",fRawReader->GetDataSize()));
2eb38194 112 return kFALSE;
726d762c 113 }
114
115 fPosition = 0;
116
117 fTrigger = GetNextWord() & 0xffff;
118 fTriggerMask = GetNextWord() & 0xffff;
119
120 for(Int_t iChannel = 0; iChannel < kNChannels; iChannel++) {
121 for(Int_t iEvOfInt = 0; iEvOfInt < kNEvOfInt; iEvOfInt++) {
122 UShort_t data = GetNextShort();
123 fADC[iChannel][iEvOfInt] = data & 0x3ff;
124 fIsInt[iChannel][iEvOfInt] = (data >> 10) & 0x1;
125 fIsBB[iChannel][iEvOfInt] = (data >> 11) & 0x1;
126 fIsBG[iChannel][iEvOfInt] = (data >> 12) & 0x1;
2eb38194 127 }
726d762c 128 GetNextShort();
129
130 UInt_t time = GetNextWord();
131 fTime[iChannel] = time & 0xfff;
132 fWidth[iChannel] = (time >> 12) & 0x7f;
2eb38194 133 }
134
726d762c 135 for(Int_t iScaler = 0; iScaler < kNScalers; iScaler++)
136 fScalers[iScaler] = GetNextWord();
137
138 for(Int_t iChannel = 0; iChannel < kNChannels; iChannel++) {
139 fBBScalers[iChannel] = ((ULong64_t)GetNextWord()) << 32;
140 fBBScalers[iChannel] |= GetNextWord();
2eb38194 141
726d762c 142 fBGScalers[iChannel] = ((ULong64_t)GetNextWord()) << 32;
143 fBGScalers[iChannel] |= GetNextWord();
144 }
145
146 for(Int_t iBunch = 0; iBunch < kNBunches; iBunch++)
147 fBunchNumbers[iBunch] = GetNextWord();
148
149 for(Int_t iChannel = 0; iChannel < kNChannels; iChannel++) {
150 for(Int_t iBunch = 0; iBunch < kNBunches; iBunch++) {
151 UShort_t data = GetNextShort();
152 fChargeMB[iChannel][iBunch] = data & 0x3ff;
153 fIsIntMB[iChannel][iBunch] = (data >> 10) & 0x1;
154 fIsBBMB[iChannel][iBunch] = (data >> 11) & 0x1;
155 fIsBGMB[iChannel][iBunch] = (data >> 12) & 0x1;
156 }
157 }
2eb38194 158
159 return kTRUE;
160}
161
162//_____________________________________________________________________________
726d762c 163UInt_t AliVZERORawStream::GetNextWord()
2eb38194 164{
165 // This method returns the next 32 bit word
166 // inside the raw data payload.
167 // The method is supposed to be endian (platform)
168 // independent.
169 if (!fData || fPosition < 0) AliFatal("Raw data payload buffer is not yet initialized !");
170
726d762c 171 UInt_t word = 0;
2eb38194 172 word |= fData[fPosition++];
173 word |= fData[fPosition++] << 8;
174 word |= fData[fPosition++] << 16;
175 word |= fData[fPosition++] << 24;
176
177 return word;
178}
726d762c 179
180//_____________________________________________________________________________
181UShort_t AliVZERORawStream::GetNextShort()
182{
183 // This method returns the next 16 bit word
184 // inside the raw data payload.
185 // The method is supposed to be endian (platform)
186 // independent.
187 if (!fData || fPosition < 0) AliFatal("Raw data payload buffer is not yet initialized !");
188
189 UShort_t word = 0;
190 word |= fData[fPosition++];
191 word |= fData[fPosition++] << 8;
192
193 return word;
194}