1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 /// This class provides access to ITS SDD digits in raw data.
22 ///////////////////////////////////////////////////////////////////////////////
24 #include "AliITSRawStreamSDD.h"
25 #include "AliRawReader.h"
27 ClassImp(AliITSRawStreamSDD)
29 const Int_t AliITSRawStreamSDD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = {
31 {240,241,242,246,247,248,252,253,254,258,259,260},
32 {264,265,266,270,271,272,276,277,278,282,283,284},
33 {288,289,290,294,295,296,300,301,302,306,307,308},
34 {312,313,314,318,319,320,-1,-1,-1,-1,-1,-1},
35 {243,244,245,249,250,251,255,256,257,261,262,263},
36 {267,268,269,273,274,275,279,280,281,285,286,287},
37 {291,292,293,297,298,299,303,304,305,309,310,311},
38 {315,316,317,321,322,323,-1,-1,-1,-1,-1,-1},
39 {324,325,326,327,332,333,334,335,340,341,342,343},
40 {348,349,350,351,356,357,358,359,364,365,366,367},
41 {372,373,374,375,380,381,382,383,388,389,390,391},
42 {396,397,398,399,404,405,406,407,412,413,414,415},
43 {420,421,422,423,428,429,430,431,436,437,438,439},
44 {444,445,446,447,452,453,454,455,460,461,462,463},
45 {468,469,470,471,476,477,478,479,484,485,486,487},
46 {492,493,494,495,-1,-1,-1,-1,-1,-1,-1,-1},
47 {328,329,330,331,336,337,338,339,344,345,346,347},
48 {352,353,354,355,360,361,362,363,368,369,370,371},
49 {376,377,378,379,384,385,386,387,392,393,394,395},
50 {400,401,402,403,408,409,410,411,416,417,418,419},
51 {424,425,426,427,432,433,434,435,440,441,442,443},
52 {448,449,450,451,456,457,458,459,464,465,466,467},
53 {472,473,474,475,480,481,482,483,488,489,490,491},
54 {496,497,498,499,-1,-1,-1,-1,-1,-1,-1,-1}};
56 const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7};
58 AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) :
59 AliITSRawStream(rawReader),
65 fNCarlos(kModulesPerDDL),
71 // create an object to read ITS SDD raw digits
73 for(Int_t i=0;i<2;i++){
74 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
75 fChannelData[ic][i]=0;
77 fChannelCode[ic][i]=0;
78 fReadCode[ic][i]=kFALSE;
85 for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0;
87 fRawReader->Select("ITSSDD");
89 //fRawReader->SelectEquipment(17, 101, 101);//select this for test data
90 //fNCarlos = 8; //select this for test data
93 UInt_t AliITSRawStreamSDD::ReadBits()
95 // read bits from the given channel
97 UInt_t result = (fChannelData[fCarlosId][fChannel] & ((1<<fReadBits[fCarlosId][fChannel]) - 1));
98 fChannelData[fCarlosId][fChannel] >>= fReadBits[fCarlosId][fChannel];
99 fLastBit[fCarlosId][fChannel] -= fReadBits[fCarlosId][fChannel];
103 Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const
105 // AMBRA decompression (from 8 to 10 bit)
107 if ((value & 0x80) == 0) {
109 } else if ((value & 0x40) == 0) {
110 return 0x081 + ((value & 0x3f) << 1);
111 } else if ((value & 0x20) == 0) {
112 return 0x104 + ((value & 0x1f) << 3);
114 return 0x208 + ((value & 0x1f) << 4);
119 Bool_t AliITSRawStreamSDD::Next()
121 // read the next raw digit
122 // returns kFALSE if there is no digit left
124 fPrevModuleID = fModuleID;
125 fDDL=fRawReader->GetDDLID();
126 Int_t ddln = fRawReader->GetDDLID();
128 while (fSkip[ddln] < 9) {
129 if (!fRawReader->ReadNextInt(fData)) return kFALSE;
130 if ((fData >> 30) == 0x01) continue; // JTAG word
135 Int_t countFoot[kModulesPerDDL];
136 for(Int_t i=0;i<kModulesPerDDL;i++) countFoot[i]=0;
138 if ((fChannel < 0) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel])) {
140 if (!fRawReader->ReadNextInt(fData)) return kFALSE; // read next word
141 ddln = fRawReader->GetDDLID();
144 for(Int_t icr=0;icr<kModulesPerDDL;icr++) countFoot[icr]=0;
146 if(ddln < 0 || ddln > (kDDLsNumber-1)) ddln = 0;
147 while (fSkip[ddln] < 9) {
148 if (!fRawReader->ReadNextInt(fData)) return kFALSE;
149 if ((fData >> 30) == 0x01) continue; // JTAG word
156 if( ((fData << 4) >> 4) == 0){
157 fCarlosId = 0;fNfifo0 = fCarlosId;
159 else if (((fData << 4) >> 4) == 1){
160 fCarlosId = 1;fNfifo0 = fCarlosId;
162 else if (((fData << 4) >> 4) == 2){
164 if(fNCarlos == 8) fNfifo1 = fCarlosId;
165 else fNfifo0 = fCarlosId;
167 else if (((fData << 4) >> 4) == 3){
168 fCarlosId = 3;fNfifo1 = fCarlosId;
170 else if (((fData << 4) >> 4) == 4){
172 if(fNCarlos == 8) fNfifo2 = fCarlosId;
173 else fNfifo1 = fCarlosId;
175 else if (((fData << 4) >> 4) == 5){
177 if(fNCarlos == 8) fNfifo2 = fCarlosId;
178 else fNfifo1 = fCarlosId;
180 else if (((fData << 4) >> 4) == 6){
182 if(fNCarlos == 8) fNfifo3 = fCarlosId;
183 else fNfifo2 = fCarlosId;
185 else if (((fData << 4) >> 4) == 7){
187 if(fNCarlos == 8) fNfifo3 = fCarlosId;
188 else fNfifo2 = fCarlosId;
190 else if (((fData << 4) >> 4) == 8){
191 fCarlosId = 8;fNfifo2 = fCarlosId;
193 else if (((fData << 4) >> 4) == 9){
194 fCarlosId = 9;fNfifo3 = fCarlosId;
196 else if (((fData << 4) >> 4) == 10){
197 fCarlosId = 10;fNfifo3 = fCarlosId;
199 else if (((fData << 4) >> 4) == 11){
200 fCarlosId = 11;fNfifo3 = fCarlosId;
202 else if (((fData << 4) >> 4) == 16){
205 else if (((fData << 4) >> 4) == 17){
208 else if (((fData << 4) >> 4) == 18){
211 else if (((fData << 4) >> 4) == 19){
214 if(fData==1059004191) continue;
215 if (fNCarlos == 8 && (fCarlosId == 8 || fCarlosId == 9 ||
216 fCarlosId ==10 || fCarlosId == 11))continue;
218 fModuleID = fgkDDLModuleMap[fRawReader->GetDDLID()][fCarlosId];
220 if ((fData >> 28) == 0x02) { // header
221 fEventId = (fData >> 3) & 0x07FF;
222 } else if ((fData >> 28) == 0x03) { // footer
223 countFoot[fCarlosId]++; // stop before the last word (last word=jitter)
224 if(countFoot[fCarlosId]==3){
227 } else if ((fData >> 29) == 0x00) { // error
229 if ((fData & 0x00000163) != 0) {
231 Error("Next", "error codes = %8.8x",fData);
235 } else if ((fData >> 30) == 0x01) { // JTAG word
237 } else if ((fData >> 30) == 0x02) { // channel 0 data
240 } else if ((fData >> 30) == 0x03) { // channel 1 data
242 } else { // unknown data format
243 Error("Next", "invalid data: %8.8x\n", fData);
247 if (fChannel >= 0) { // add read word to the data
248 fChannelData[fCarlosId][fChannel] +=
249 (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]);
250 fLastBit[fCarlosId][fChannel] += 30;
253 } else { // decode data
255 if (fReadCode[fCarlosId][fChannel]) {// read the next code word
256 fChannelCode[fCarlosId][fChannel] = ReadBits();
257 fReadCode[fCarlosId][fChannel] = kFALSE;
258 fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]];
260 } else { // read the next data word
261 UInt_t data = ReadBits();
262 fReadCode[fCarlosId][fChannel] = kTRUE;
263 fReadBits[fCarlosId][fChannel] = 3;
264 if (fChannelCode[fCarlosId][fChannel] == 0) { // set the time bin
265 fTimeBin[fCarlosId][fChannel] = data;
266 } else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode
267 fTimeBin[fCarlosId][fChannel] = 0;
268 fAnode[fCarlosId][fChannel]++;
270 }else { // ADC signal data
271 fSignal = DecompAmbra(data + (1 << fChannelCode[fCarlosId][fChannel]) + fLowThreshold[fChannel]);
272 fCoord1 = fAnode[fCarlosId][fChannel];
273 fCoord2 = fTimeBin[fCarlosId][fChannel];
274 fTimeBin[fCarlosId][fChannel]++;
284 void AliITSRawStreamSDD::Reset(){
285 //reset data member for a new ddl
287 for(Int_t i=0;i<2;i++){
288 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
289 fChannelData[ic][i]=0;
291 fChannelCode[ic][i]=0;
292 fReadCode[ic][i]=kFALSE;
300 fDDL=fRawReader->GetDDLID();