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2906f4c2 | 1 | /************************************************************************** |
27639c72 | 2 | * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. * |
2906f4c2 | 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 | ||
ceb607d0 | 16 | /* $Id$*/ |
2906f4c2 | 17 | |
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | /// | |
20 | /// This class provides access to ITS SDD digits in raw data. | |
21 | /// | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | #include "AliITSRawStreamSDD.h" | |
25 | #include "AliRawReader.h" | |
39a7c5cc | 26 | #include "AliLog.h" |
2906f4c2 | 27 | |
28 | ClassImp(AliITSRawStreamSDD) | |
1ba0280f | 29 | |
30 | const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7}; | |
2906f4c2 | 31 | |
979b5a5f | 32 | //______________________________________________________________________ |
2906f4c2 | 33 | AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) : |
e56160b8 | 34 | AliITSRawStream(rawReader), |
979b5a5f | 35 | fDDLModuleMap(0), |
e56160b8 | 36 | fData(0), |
a97b3678 | 37 | fEventId(0), |
14dceddf | 38 | fCarlosId(-1), |
e56160b8 | 39 | fChannel(0), |
a97b3678 | 40 | fJitter(0), |
6297cc01 | 41 | fEightBitSignal(0), |
42 | fDecompressAmbra(kTRUE) | |
9c8e7d50 | 43 | { |
2906f4c2 | 44 | // create an object to read ITS SDD raw digits |
27639c72 | 45 | Reset(); |
83ec5e27 | 46 | for(Int_t im=0;im<kSDDModules;im++){ |
47 | fLowThresholdArray[im][0]=0; | |
48 | fLowThresholdArray[im][1]=0; | |
49 | } | |
765a9f95 | 50 | for(Int_t i=0;i<kFifoWords;i++) fNfifo[i]=0; |
a97b3678 | 51 | for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0; |
52 | fRawReader->Reset(); | |
362c9d61 | 53 | fRawReader->Select("ITSSDD"); |
1ba0280f | 54 | |
27639c72 | 55 | for(Short_t i=0; i<kCarlosWords; i++) fICarlosWord[i]=0x30000000 + i; // 805306368+i; |
56 | for(Short_t i=0; i<kFifoWords; i++) fIFifoWord[i]=0x30000010 + i; // 805306384+i; | |
1ba0280f | 57 | } |
58 | ||
979b5a5f | 59 | //______________________________________________________________________ |
60 | AliITSRawStreamSDD::AliITSRawStreamSDD(const AliITSRawStreamSDD& rs) : | |
61 | AliITSRawStream(rs.fRawReader), | |
62 | fDDLModuleMap(rs.fDDLModuleMap), | |
63 | fData(0), | |
64 | fEventId(0), | |
65 | fCarlosId(-1), | |
66 | fChannel(0), | |
67 | fJitter(0), | |
6297cc01 | 68 | fEightBitSignal(0), |
69 | fDecompressAmbra(kTRUE) | |
979b5a5f | 70 | { |
71 | // copy constructor | |
72 | AliError("Copy constructor should not be used."); | |
73 | } | |
74 | //__________________________________________________________________________ | |
75 | AliITSRawStreamSDD& AliITSRawStreamSDD::operator=(const AliITSRawStreamSDD& rs) { | |
76 | // assignment operator | |
77 | if (this!=&rs) {} | |
78 | AliError("Assignment opertator should not be used."); | |
79 | return *this; | |
80 | } | |
81 | ||
82 | //______________________________________________________________________ | |
83 | AliITSRawStreamSDD::~AliITSRawStreamSDD(){ | |
84 | if(fDDLModuleMap) delete fDDLModuleMap; | |
85 | } | |
86 | //______________________________________________________________________ | |
1ba0280f | 87 | UInt_t AliITSRawStreamSDD::ReadBits() |
88 | { | |
89 | // read bits from the given channel | |
a97b3678 | 90 | UInt_t result = (fChannelData[fCarlosId][fChannel] & ((1<<fReadBits[fCarlosId][fChannel]) - 1)); |
91 | fChannelData[fCarlosId][fChannel] >>= fReadBits[fCarlosId][fChannel]; | |
92 | fLastBit[fCarlosId][fChannel] -= fReadBits[fCarlosId][fChannel]; | |
1ba0280f | 93 | return result; |
2906f4c2 | 94 | } |
95 | ||
979b5a5f | 96 | //______________________________________________________________________ |
1ba0280f | 97 | Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const |
98 | { | |
a97b3678 | 99 | // AMBRA decompression (from 8 to 10 bit) |
100 | ||
1ba0280f | 101 | if ((value & 0x80) == 0) { |
102 | return value & 0x7f; | |
103 | } else if ((value & 0x40) == 0) { | |
104 | return 0x081 + ((value & 0x3f) << 1); | |
105 | } else if ((value & 0x20) == 0) { | |
106 | return 0x104 + ((value & 0x1f) << 3); | |
107 | } else { | |
108 | return 0x208 + ((value & 0x1f) << 4); | |
109 | } | |
a97b3678 | 110 | |
1ba0280f | 111 | } |
2906f4c2 | 112 | |
979b5a5f | 113 | //______________________________________________________________________ |
2906f4c2 | 114 | Bool_t AliITSRawStreamSDD::Next() |
115 | { | |
116 | // read the next raw digit | |
117 | // returns kFALSE if there is no digit left | |
5dfa68c5 | 118 | // returns kTRUE and fCompletedModule=kFALSE when a digit is found |
119 | // returns kTRUE and fCompletedModule=kTRUE when a module is completed (=3x3FFFFFFF footer words) | |
120 | ||
2906f4c2 | 121 | fPrevModuleID = fModuleID; |
5dfa68c5 | 122 | fCompletedModule=kFALSE; |
a97b3678 | 123 | |
a97b3678 | 124 | while (kTRUE) { |
27639c72 | 125 | |
8345a1cf | 126 | if ((fChannel < 0) || (fCarlosId < 0) || (fChannel >= 2) || (fCarlosId >= kModulesPerDDL) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel]) ) { |
14dceddf | 127 | if (!fRawReader->ReadNextInt(fData)) return kFALSE; // read next word |
70881050 | 128 | |
5dfa68c5 | 129 | |
c3ad350c | 130 | if((fData >> 16) == 0x7F00){ // jitter word |
e2fc1bc8 | 131 | Reset(); |
b24ea968 | 132 | Bool_t kSkip = SkipHeaderWord(); |
133 | if(!kSkip) return kSkip; | |
5dfa68c5 | 134 | continue; |
9c8e7d50 | 135 | } |
5dfa68c5 | 136 | |
14dceddf | 137 | UInt_t nData28= fData >> 28; |
138 | UInt_t nData30= fData >> 30; | |
139 | ||
140 | ||
141 | if (nData28== 0x02) { // header | |
142 | fEventId = (fData >> 3) & 0x07FF; | |
143 | } else if (nData28== 0x03) { // Carlos and FIFO words or Footers | |
144 | if(fData>=fICarlosWord[0]&&fData<=fICarlosWord[11]) { // Carlos Word | |
14dceddf | 145 | fCarlosId = fData-fICarlosWord[0]; |
146 | Int_t iFifoIdx = fCarlosId/3; | |
14dceddf | 147 | fNfifo[iFifoIdx] = fCarlosId; |
148 | } else if (fData>=fIFifoWord[0]&&fData<=fIFifoWord[3]){ // FIFO word | |
14dceddf | 149 | fCarlosId = fNfifo[fData-fIFifoWord[0]]; |
150 | } else if(fData==0x3FFFFFFF){ // Carlos footer | |
fffa954f | 151 | fICountFoot[fCarlosId]++; // stop before the last word (last word=jitter) |
152 | if(fICountFoot[fCarlosId]==3){ | |
153 | fCompletedModule=kTRUE; | |
fffa954f | 154 | return kTRUE; |
9c8e7d50 | 155 | } |
14dceddf | 156 | } else if(fData==0x3F1F1F1F){ // CarlosRX footer |
70881050 | 157 | // CARLOSRX footer -- do nothing |
14dceddf | 158 | }else{ |
70881050 | 159 | fRawReader->AddMajorErrorLog(kDataError,"Bad footer"); |
fd2d1992 | 160 | AliWarning(Form("Invalid data: bad footer %08X\n", fData)); |
14dceddf | 161 | return kFALSE; |
9c8e7d50 | 162 | } |
14dceddf | 163 | } else if (nData30 == 0x02 || nData30 == 0x03) { |
164 | fChannel = nData30-2; | |
fffa954f | 165 | fChannelData[fCarlosId][fChannel] += |
166 | (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]); | |
167 | fLastBit[fCarlosId][fChannel] += 30; | |
70881050 | 168 | } else if (nData28== 0x04) { |
169 | // JTAG word -- do nothing | |
a97b3678 | 170 | } else { // unknown data format |
9c8e7d50 | 171 | fRawReader->AddMajorErrorLog(kDataFormatErr,Form("Invalid data %8.8x",fData)); |
b24ea968 | 172 | AliWarning(Form("Invalid data: %08X\n", fData)); |
9c8e7d50 | 173 | return kFALSE; |
a97b3678 | 174 | } |
175 | ||
8345a1cf | 176 | if(fCarlosId>=0 && fCarlosId <kModulesPerDDL){ |
e2fc1bc8 | 177 | Int_t nDDL=fRawReader->GetDDLID(); |
b24ea968 | 178 | fModuleID = GetModuleNumber(nDDL,fCarlosId); |
8345a1cf | 179 | } |
a97b3678 | 180 | } else { // decode data |
a97b3678 | 181 | if (fReadCode[fCarlosId][fChannel]) {// read the next code word |
9c8e7d50 | 182 | fChannelCode[fCarlosId][fChannel] = ReadBits(); |
183 | fReadCode[fCarlosId][fChannel] = kFALSE; | |
184 | fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]]; | |
a97b3678 | 185 | } else { // read the next data word |
9c8e7d50 | 186 | UInt_t data = ReadBits(); |
187 | fReadCode[fCarlosId][fChannel] = kTRUE; | |
188 | fReadBits[fCarlosId][fChannel] = 3; | |
189 | if (fChannelCode[fCarlosId][fChannel] == 0) { // set the time bin | |
190 | fTimeBin[fCarlosId][fChannel] = data; | |
191 | } else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode | |
192 | fTimeBin[fCarlosId][fChannel] = 0; | |
193 | fAnode[fCarlosId][fChannel]++; | |
194 | } else { // ADC signal data | |
6297cc01 | 195 | fEightBitSignal=data + (1 << fChannelCode[fCarlosId][fChannel]); |
196 | if(fDecompressAmbra) fSignal = DecompAmbra(fEightBitSignal + fLowThresholdArray[fModuleID-kSPDModules][fChannel]); | |
9c8e7d50 | 197 | fCoord1 = fAnode[fCarlosId][fChannel]; |
198 | fCoord2 = fTimeBin[fCarlosId][fChannel]; | |
199 | fTimeBin[fCarlosId][fChannel]++; | |
9c8e7d50 | 200 | return kTRUE; |
201 | } | |
a97b3678 | 202 | } |
203 | } | |
204 | } | |
14dceddf | 205 | return kFALSE; |
2906f4c2 | 206 | } |
1ba0280f | 207 | |
979b5a5f | 208 | //______________________________________________________________________ |
a97b3678 | 209 | void AliITSRawStreamSDD::Reset(){ |
765a9f95 | 210 | |
a97b3678 | 211 | //reset data member for a new ddl |
a97b3678 | 212 | for(Int_t i=0;i<2;i++){ |
213 | for(Int_t ic=0;ic<kModulesPerDDL;ic++){ | |
214 | fChannelData[ic][i]=0; | |
215 | fLastBit[ic][i]=0; | |
216 | fChannelCode[ic][i]=0; | |
14dceddf | 217 | fReadCode[ic][i]=kTRUE; |
218 | fReadBits[ic][i]=3; | |
a97b3678 | 219 | fTimeBin[ic][i]=0; |
220 | fAnode[ic][i]=0; | |
b24ea968 | 221 | fICountFoot[ic]=0; |
a97b3678 | 222 | } |
a97b3678 | 223 | } |
a97b3678 | 224 | } |
765a9f95 | 225 | |
979b5a5f | 226 | //______________________________________________________________________ |
83ec5e27 | 227 | Bool_t AliITSRawStreamSDD::SkipHeaderWord(){ |
8345a1cf | 228 | // skip the 1 DDL header word = 0xffffffff |
83ec5e27 | 229 | while (kTRUE) { |
230 | if (!fRawReader->ReadNextInt(fData)) return kFALSE; | |
765a9f95 | 231 | if ((fData >> 30) == 0x01) continue; // JTAG word |
83ec5e27 | 232 | if(fData==0xFFFFFFFF) return kTRUE; |
765a9f95 | 233 | } |
765a9f95 | 234 | } |
235 |