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 SPD digits in raw data.
22 ///////////////////////////////////////////////////////////////////////////////
24 #include "AliITSRawStreamSPD.h"
25 #include "AliRawReader.h"
28 ClassImp(AliITSRawStreamSPD)
31 // this map has to change, waiting for the new geometry
32 const Int_t AliITSRawStreamSPD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = {
33 { 0, 1, 4, 5, 80, 81, 84, 85, 88, 89, 92, 93},
34 { 8, 9,12,13, 96, 97,100,101,104,105,108,109},
35 {16,17,20,21,112,113,116,117,120,121,124,125},
36 {24,25,28,29,128,129,132,133,136,137,140,141},
37 {32,33,36,37,144,145,148,149,152,153,156,157},
38 {40,41,44,45,160,161,164,165,168,169,172,173},
39 {48,49,52,53,176,177,180,181,184,185,188,189},
40 {56,57,60,61,192,193,196,197,200,201,204,205},
41 {64,65,68,69,208,209,212,213,216,217,220,221},
42 {72,73,76,77,224,225,228,229,232,233,236,237},
43 { 2, 3, 6, 7, 82, 83, 86, 87, 90, 91, 94, 95},
44 {10,11,14,15, 98, 99,102,103,106,107,110,111},
45 {18,19,22,23,114,115,118,119,122,123,126,127},
46 {26,27,30,31,130,131,134,135,138,139,142,143},
47 {34,35,38,39,146,147,150,151,154,155,158,159},
48 {42,43,46,47,162,163,166,167,170,171,174,175},
49 {50,51,54,55,178,179,182,183,186,187,190,191},
50 {58,59,62,63,194,195,198,199,202,203,206,207},
51 {66,67,70,71,210,211,214,215,218,219,222,223},
52 {74,75,78,79,226,227,230,231,234,235,238,239}
56 AliITSRawStreamSPD::AliITSRawStreamSPD(AliRawReader* rawReader) :
57 AliITSRawStream(rawReader),
58 fEventNumber(-1),fChipAddr(0),fHalfStaveNr(0),fCol(0),fRow(0),
59 fData(0),fOffset(0),fHitCount(0),
60 fDataChar1(0),fDataChar2(0),fDataChar3(0),fDataChar4(0),
61 fFirstWord(kTRUE),fPrevEventId(0xffffffff)
63 // create an object to read ITS SPD raw digits
64 fRawReader->Select("ITSSPD");
65 // reset calib header words
66 for (UInt_t iword=0; iword<kCalHeadLenMax; iword++) {
67 fCalHeadWord[iword]=0xffffffff;
72 Bool_t AliITSRawStreamSPD::ReadNextShort()
74 // read next 16 bit word into fData
76 Bool_t b1 = fRawReader->ReadNextChar(fDataChar1);
77 if (!b1) return kFALSE;
79 b2 = fRawReader->ReadNextChar(fDataChar2);
80 b3 = fRawReader->ReadNextChar(fDataChar3);
81 b4 = fRawReader->ReadNextChar(fDataChar4);
82 if (!(b2 && b3 && b4)) {
85 fData = fDataChar3+(fDataChar4<<8);
86 if ((*fRawReader->GetEventId())!=fPrevEventId) { // if new event...
88 fPrevEventId=(*fRawReader->GetEventId());
94 fData = fDataChar1+(fDataChar2<<8);
100 Bool_t AliITSRawStreamSPD::ReadNextInt()
102 // reads next 32 bit into fDataChar1..4
103 // (if first 16 bits read already, just completes the present word)
105 if (ReadNextShort() && ReadNextShort()) {
110 if (ReadNextShort()) {
117 void AliITSRawStreamSPD::NewEvent()
119 // call this to reset flags for a new event
120 for (UInt_t eqId=0; eqId<20; eqId++) {
121 fCalHeadRead[eqId]=kFALSE;
126 Bool_t AliITSRawStreamSPD::ReadCalibHeader()
128 // read the extra calibration header
129 // returns kTRUE if the header is present and has length > 0
131 Int_t ddlID = fRawReader->GetDDLID();
132 if (ddlID==-1) { // we may need to read one word to get the blockAttr
133 if (!ReadNextShort()) return kFALSE;
134 ddlID = fRawReader->GetDDLID();
136 UChar_t attr = fRawReader->GetBlockAttributes();
137 if (ddlID>=0 && ddlID<20) fCalHeadRead[ddlID]=kTRUE;
138 if ((attr & 0x40) == 0x40) { // is the header present?
140 // length of cal header:
141 UInt_t calLen = fDataChar1+(fDataChar2<<8)+(fDataChar3<<16)+(fDataChar4<<24);
142 if (calLen>kCalHeadLenMax) {
143 fRawReader->AddMajorErrorLog(kCalHeaderLengthErr,Form("Header length %d > max = %d",calLen,kCalHeadLenMax));
144 AliWarning(Form("Header length problem. %d > %d (max)",calLen,kCalHeadLenMax));
148 for (UInt_t iword=0; iword<calLen; iword++) {
150 fCalHeadWord[iword] = fDataChar1+(fDataChar2<<8)+(fDataChar3<<16)+(fDataChar4<<24);
153 fRawReader->AddMajorErrorLog(kCalHeaderLengthErr,"header length problem");
154 AliWarning("header length problem");
166 Bool_t AliITSRawStreamSPD::Next()
168 // read the next raw digit
169 // returns kFALSE if there is no digit left
172 fPrevModuleID = fModuleID;
174 while (ReadNextShort()) {
176 ddlID = fRawReader->GetDDLID();
177 if (ddlID>=0 && ddlID<20) {
178 if (!fCalHeadRead[ddlID]) {
183 fRawReader->AddMajorErrorLog(kDDLNumberErr,Form("Wrong DDL number %d",ddlID));
184 AliWarning(Form("DDL number error (= %d) , setting it to 19", ddlID));
188 if ((fData & 0xC000) == 0x4000) { // header
190 UShort_t eventNumber = (fData >> 4) & 0x007F;
191 if (fEventNumber < 0) {
192 fEventNumber = eventNumber;
194 else if (eventNumber != fEventNumber) {
195 fRawReader->AddMajorErrorLog(kEventNumberErr,Form("Reading event number %d instead of %d",eventNumber,fEventNumber));
196 AliWarning(Form("mismatching event numbers: %d != %d",eventNumber, fEventNumber));
198 fChipAddr = fData & 0x000F;
200 fRawReader->AddMajorErrorLog(kChipAddrErr,Form("Overflow chip address %d - set to 9",fChipAddr));
201 AliWarning(Form("overflow chip addr (= %d) , setting it to 9", fChipAddr));
204 fHalfStaveNr = (fData & 0x3800)>>11;
205 if (fHalfStaveNr>5 || fRawReader->TestBlockAttribute(fHalfStaveNr)) {
206 fRawReader->AddMajorErrorLog(kStaveNumberErr,Form("Half stave number error %d - set to 5",fHalfStaveNr));
207 AliWarning(Form("half stave number error(=%d) , setting it to 5", fHalfStaveNr));
210 // translate ("online") ddl, hs, chip nr to ("offline") module id :
211 fModuleID = fgkDDLModuleMap[ddlID][fHalfStaveNr*2+fChipAddr/5];
212 fOffset = 32 * (fChipAddr % 5);
214 else if ((fData & 0xC000) == 0x0000) { // trailer
215 UShort_t hitCount = fData & 0x1FFF;
216 if (hitCount != fHitCount){
217 fRawReader->AddMajorErrorLog(kNumbHitsErr,Form("Number of hits %d instead of %d",hitCount,fHitCount));
218 AliWarning(Form("wrong number of hits: %d != %d", fHitCount, hitCount));
221 else if ((fData & 0xC000) == 0x8000) { // pixel hit
223 fCol = (fData & 0x001F);
224 fRow = (fData >> 5) & 0x00FF;
226 // translate ("online") chipcol, chiprow to ("offline") col (coord1), row (coord2):
227 // This will change, waiting for new geometry!!!
229 // if (fModuleID < 80 && ddlID < 10) fCoord1=31-fCoord1;
230 // else if (fModuleID >=80 && ddlID >=10) fCoord1=31-fCoord1;
232 // if (ddlID>=10) fCoord1=159-fCoord1;
234 // if (fModuleID<80) fCoord2=255-fCoord2;
239 if ((fData & 0xC000) != 0xC000) {
240 fRawReader->AddMajorErrorLog(kWrongWordErr,"Wrong fill word");
241 AliWarning("wrong fill word!");
249 Bool_t AliITSRawStreamSPD::GetHalfStavePresent(UInt_t hs) {
250 // Reads the half stave present status from the block attributes
251 Int_t ddlID = fRawReader->GetDDLID();
253 fRawReader->AddMinorErrorLog(kHalfStaveStatusErr,"DDL ID = -1. Cannot read block attributes.");
254 AliWarning("DDL ID = -1. Cannot read block attributes. Return kFALSE.");
259 fRawReader->AddMinorErrorLog(kHalfStaveStatusErr,Form( "HS >= 6 requested (%d). Return kFALSE.",hs));
260 AliWarning(Form("HS >= 6 requested (%d). Return kFALSE.",hs));
263 UChar_t attr = fRawReader->GetBlockAttributes();
264 if (((attr>>hs) & 0x01) == 0x01) { // bit set means not present
273 Bool_t AliITSRawStreamSPD::GetHhalfStaveScanned(UInt_t hs) const {
274 if (hs<6) return (Bool_t)((fCalHeadWord[0]>>(6+hs)) & (0x00000001));
277 Bool_t AliITSRawStreamSPD::GetHchipPresent(UInt_t hs, UInt_t chip) const {
278 if (hs<6 && chip<10) return ((( fCalHeadWord[hs/3+3]>>((hs%3)*10+chip)) & 0x00000001) == 1);
281 UInt_t AliITSRawStreamSPD::GetHdacHigh(UInt_t hs) const {
282 if (hs<6) return (fCalHeadWord[hs/2+7]>>(24-16*(hs%2)) & 0x000000ff);
285 UInt_t AliITSRawStreamSPD::GetHdacLow(UInt_t hs) const {
286 if (hs<6) return (fCalHeadWord[hs/2+7]>>(16-16*(hs%2)) & 0x000000ff);
289 UInt_t AliITSRawStreamSPD::GetHTPAmp(UInt_t hs) const {
290 if (hs<6) return fCalHeadWord[hs+10];