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 #include "Riostream.h"
29 ClassImp(AliITSRawStreamSDD)
31 const Int_t AliITSRawStreamSDD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = {
33 {240,241,242,246,247,248,252,253,254,258,259,260},
34 {264,265,266,270,271,272,276,277,278,282,283,284},
35 {288,289,290,294,295,296,300,301,302,306,307,308},
36 {312,313,314,318,319,320,-1,-1,-1,-1,-1,-1},
37 {243,244,245,249,250,251,255,256,257,261,262,263},
38 {267,268,269,273,274,275,279,280,281,285,286,287},
39 {291,292,293,297,298,299,303,304,305,309,310,311},
40 {315,316,317,321,322,323,-1,-1,-1,-1,-1,-1},
41 {324,325,326,327,332,333,334,335,340,341,342,343},
42 {348,349,350,351,356,357,358,359,364,365,366,367},
43 {372,373,374,375,380,381,382,383,388,389,390,391},
44 {396,397,398,399,404,405,406,407,412,413,414,415},
45 {420,421,422,423,428,429,430,431,436,437,438,439},
46 {444,445,446,447,452,453,454,455,460,461,462,463},
47 {468,469,470,471,476,477,478,479,484,485,486,487},
48 {492,493,494,495,-1,-1,-1,-1,-1,-1,-1,-1},
49 {328,329,330,331,336,337,338,339,344,345,346,347},
50 {352,353,354,355,360,361,362,363,368,369,370,371},
51 {376,377,378,379,384,385,386,387,392,393,394,395},
52 {400,401,402,403,408,409,410,411,416,417,418,419},
53 {424,425,426,427,432,433,434,435,440,441,442,443},
54 {448,449,450,451,456,457,458,459,464,465,466,467},
55 {472,473,474,475,480,481,482,483,488,489,490,491},
56 {496,497,498,499,-1,-1,-1,-1,-1,-1,-1,-1}};
58 const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7};
60 AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) :
61 AliITSRawStream(rawReader),
67 fNCarlos(kModulesPerDDL),
69 // create an object to read ITS SDD raw digits
71 for(Int_t i=0;i<2;i++){
72 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
73 fChannelData[ic][i]=0;
75 fChannelCode[ic][i]=0;
76 fReadCode[ic][i]=kFALSE;
83 for(Int_t i=0;i<kFifoWords;i++) fNfifo[i]=0;
84 for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0;
86 fRawReader->Select("ITSSDD");
88 // fNCarlos = 8; //select this for test data
89 for(Short_t i=0; i<kCarlosWords; i++) iCarlosWord[i]=805306368+i;
90 for(Short_t i=0; i<kFifoWords; i++) iFifoWord[i]=805306384+i;
93 UInt_t AliITSRawStreamSDD::ReadBits()
95 // read bits from the given channel
96 UInt_t result = (fChannelData[fCarlosId][fChannel] & ((1<<fReadBits[fCarlosId][fChannel]) - 1));
97 fChannelData[fCarlosId][fChannel] >>= fReadBits[fCarlosId][fChannel];
98 fLastBit[fCarlosId][fChannel] -= fReadBits[fCarlosId][fChannel];
102 Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const
104 // AMBRA decompression (from 8 to 10 bit)
106 if ((value & 0x80) == 0) {
108 } else if ((value & 0x40) == 0) {
109 return 0x081 + ((value & 0x3f) << 1);
110 } else if ((value & 0x20) == 0) {
111 return 0x104 + ((value & 0x1f) << 3);
113 return 0x208 + ((value & 0x1f) << 4);
118 Bool_t AliITSRawStreamSDD::Next()
120 // read the next raw digit
121 // returns kFALSE if there is no digit left
123 fPrevModuleID = fModuleID;
124 fDDL=fRawReader->GetDDLID();
125 Int_t ddln = fRawReader->GetDDLID();
127 Bool_t kSkip = ResetSkip(ddln);
128 if(!kSkip) return kSkip;
130 for(Int_t i=0;i<kModulesPerDDL;i++) iCountFoot[i]=0;
133 if ((fChannel < 0) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel])) {
135 if (!fRawReader->ReadNextInt(fData)){
136 return kFALSE; // read next word
138 ddln = fRawReader->GetDDLID();
140 if(ddln!=fDDL) Reset();
141 if(ddln < 0 || ddln > (kDDLsNumber-1)) ddln = 0;
142 kSkip = ResetSkip(ddln);
143 if(!kSkip) return kFALSE; // read next word
146 if((fData>=iCarlosWord[0]&&fData<=iCarlosWord[11])||(fData>=iFifoWord[0]&&fData<=iFifoWord[3])){
147 for(Short_t ik=0;ik<kCarlosWords;ik++) {
148 if(fData==iCarlosWord[ik]) {
150 Int_t iFifoIdx = ik/3;
152 if(ik==2) iFifoIdx = 1;
153 if(ik==4 || ik==5) iFifoIdx = 2;
154 if(ik==6 || ik==7) iFifoIdx = 3 ;
156 fNfifo[iFifoIdx] = fCarlosId;
159 for(Short_t ik=0;ik<kFifoWords;ik++) {
160 if (fData==iFifoWord[ik]) {
161 fCarlosId = fNfifo[ik];
165 if(fData==iCarlosWord[0]){
167 fNfifo[0] = fCarlosId;
169 else if (fData==iCarlosWord[1]){
171 fNfifo[0] = fCarlosId;
173 else if (fData==iCarlosWord[2]){
175 if(fNCarlos == 8) fNfifo[1] = fCarlosId;
176 else fNfifo[0] = fCarlosId;
178 else if (fData==iCarlosWord[3]){
180 fNfifo[1] = fCarlosId;
182 else if (fData==iCarlosWord[4]){
184 if(fNCarlos == 8) fNfifo[2] = fCarlosId;
185 else fNfifo[1] = fCarlosId;
187 else if (fData==iCarlosWord[5]){
189 if(fNCarlos == 8) fNfifo[2] = fCarlosId;
190 else fNfifo[1] = fCarlosId;
192 else if (fData==iCarlosWord[6]){
194 if(fNCarlos == 8) fNfifo[3] = fCarlosId;
195 else fNfifo[2] = fCarlosId;
197 else if (fData==iCarlosWord[7]){
199 if(fNCarlos == 8) fNfifo[3] = fCarlosId;
200 else fNfifo[2] = fCarlosId;
202 else if (fData==iCarlosWord[8]){
204 fNfifo[2] = fCarlosId;
206 else if (fData==iCarlosWord[9]){
208 fNfifo[3] = fCarlosId;
210 else if (fData==iCarlosWord[10]){
212 fNfifo[3] = fCarlosId;
214 else if (fData==iCarlosWord[11]){
216 fNfifo[3] = fCarlosId;
221 if(fData==1059004191) continue;
222 if (fNCarlos == 8 && (fCarlosId == 8 || fCarlosId == 9 ||
223 fCarlosId ==10 || fCarlosId == 11))continue;
225 fModuleID = fgkDDLModuleMap[fRawReader->GetDDLID()][fCarlosId];
227 if ((fData >> 28) == 0x02) { // header
228 fEventId = (fData >> 3) & 0x07FF;
229 } else if ((fData >> 28) == 0x03) { // footer
230 iCountFoot[fCarlosId]++; // stop before the last word (last word=jitter)
232 for(Int_t ic=0;ic<fNCarlos;ic++){
233 if(iCountFoot[ic]<3) exit=kFALSE;
238 } else if ((fData >> 29) == 0x00) { // error
240 if ((fData & 0x00000163) != 0) {
241 fRawReader->AddMajorErrorLog(kDataError,Form("Error code = %8.8x",fData));
242 AliWarning(Form("error codes = %8.8x",fData));
245 } else if ((fData >> 30) == 0x01) { // JTAG word
247 } else if ((fData >> 30) == 0x02) { // channel 0 data
250 } else if ((fData >> 30) == 0x03) { // channel 1 data
252 } else { // unknown data format
253 fRawReader->AddMajorErrorLog(kDataFormatErr,Form("Invalid data %8.8x",fData));
254 AliWarning(Form("invalid data: %8.8x\n", fData));
258 if (fChannel >= 0) { // add read word to the data
259 fChannelData[fCarlosId][fChannel] +=
260 (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]);
261 fLastBit[fCarlosId][fChannel] += 30;
264 } else { // decode data
266 if (fReadCode[fCarlosId][fChannel]) {// read the next code word
267 fChannelCode[fCarlosId][fChannel] = ReadBits();
268 fReadCode[fCarlosId][fChannel] = kFALSE;
269 fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]];
271 } else { // read the next data word
272 UInt_t data = ReadBits();
273 fReadCode[fCarlosId][fChannel] = kTRUE;
274 fReadBits[fCarlosId][fChannel] = 3;
275 if (fChannelCode[fCarlosId][fChannel] == 0) { // set the time bin
276 fTimeBin[fCarlosId][fChannel] = data;
277 } else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode
278 fTimeBin[fCarlosId][fChannel] = 0;
279 fAnode[fCarlosId][fChannel]++;
281 }else { // ADC signal data
282 fSignal = DecompAmbra(data + (1 << fChannelCode[fCarlosId][fChannel]) + fLowThreshold[fChannel]);
283 fCoord1 = fAnode[fCarlosId][fChannel];
284 fCoord2 = fTimeBin[fCarlosId][fChannel];
285 fTimeBin[fCarlosId][fChannel]++;
295 void AliITSRawStreamSDD::Reset(){
297 //reset data member for a new ddl
298 for(Int_t i=0;i<2;i++){
299 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
300 fChannelData[ic][i]=0;
302 fChannelCode[ic][i]=0;
303 fReadCode[ic][i]=kFALSE;
310 for(Int_t i=0;i<kModulesPerDDL;i++) iCountFoot[i]=0;
313 fDDL=fRawReader->GetDDLID();
316 Bool_t AliITSRawStreamSDD::ResetSkip(Int_t ddln){
317 while (fSkip[ddln] < 9) {
318 if (!fRawReader->ReadNextInt(fData))return kFALSE;
319 if ((fData >> 30) == 0x01) continue; // JTAG word