1 /**************************************************************************
2 * Copyright(c) 1998-2003, 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 **************************************************************************/
19 //This class contains all the necessary methods to create the Raw Data
20 //files (slides) for the ITS data challenges for:
26 //#include <Riostream.h>
27 #include <TClonesArray.h>
29 #include "AliITSdigit.h"
30 #include "AliITSDDLRawData.h"
31 #include "AliRawDataHeaderSim.h"
32 #include "AliITSRawStreamSPD.h"
33 #include "AliITSRawStreamSDD.h"
34 #include "AliITSDDLModuleMapSDD.h"
35 #include "AliITSRawStreamSSD.h"
36 #include "AliITSIntMap.h"
37 #include "AliBitPacking.h"
39 #include "AliFstream.h"
40 #include "AliITSFOSignalsSPD.h"
42 ClassImp(AliITSDDLRawData)
44 ////////////////////////////////////////////////////////////////////////////////////////
45 AliITSDDLRawData::AliITSDDLRawData():
54 ////////////////////////////////////////////////////////////////////////////////////////
56 AliITSDDLRawData::AliITSDDLRawData(const AliITSDDLRawData &source) :
58 fVerbose(source.fVerbose),
59 fIndex(source.fIndex),
60 fHalfStaveModule(source.fHalfStaveModule),
61 fSDDRawFormat(source.fSDDRawFormat){
65 ////////////////////////////////////////////////////////////////////////////////////////
67 AliITSDDLRawData& AliITSDDLRawData::operator=(const AliITSDDLRawData &source){
69 if(this==&source) return *this;
71 fHalfStaveModule=source.fHalfStaveModule;
72 fVerbose=source.fVerbose;
73 fSDDRawFormat=source.fSDDRawFormat;
77 ////////////////////////////////////////////////////////////////////////////////////////
81 void AliITSDDLRawData::GetDigitsSSD(TClonesArray *ITSdigits,Int_t mod,Int_t modR,Int_t ddl,UInt_t *buf){
82 //This method packs the SSD digits in a proper 32 bits structure
83 // Revised by Enrico Fragiacomo
89 Int_t ndigits = ITSdigits->GetEntries();
94 ftxt.open("SSDdigits.txt",ios::app);
96 for (Int_t digit=0;digit<ndigits;digit++) {
97 digs = (AliITSdigit*)ITSdigits->UncheckedAt(digit);
98 iz=digs->GetCoord1(); // If iz==0, O side and if iz=1 N side
99 ix=digs->GetCoord2(); // Strip Number
100 is=digs->GetCompressedSignal(); // ADC Signal
101 // cout<<" Module:"<<mod-500<<" N/P side:"<<iz<<" Strip Number:"<<ix<<" Amplidute:"<<is-1<<endl;
103 if(is>4095) is = 4095;
105 ftxt<<"DDL:"<<ddl<<" Mod: "<<modR<<" N/P: "<<iz<<" Strip: "<<ix<<" Value: "<<is-1<<endl;
110 AliBitPacking::PackWord(word,baseWord,0,11);//ADC data
112 word = (iz==0) ? ix : 1535-ix ; // on N-side 1535-768 -> 0-767
113 AliBitPacking::PackWord(word,baseWord,12,22);//Strip Number
115 word = mod%12; // ADC-number (12 ADCs per AD module)
116 word += ( word<6 ) ? 0 : 2; // ADC range 0-5 and 8-13
117 AliBitPacking::PackWord(word,baseWord,24,27);//ADC Channel
119 word = mod/12+1; // AD-number (AD module index ranges 1-9)
120 AliBitPacking::PackWord(word,baseWord,28,31);//AD slot
122 buf[fIndex]=baseWord;
130 ////////////////////////////////////////////////////////////////////////////////////////
131 //Silicon Drift Detector
134 void AliITSDDLRawData::GetDigitsSDDCompressed(TClonesArray *ITSdigits, Int_t mod, UInt_t *buf){
135 //This method packs the SDD digits in the compressed format (32 bit per digit)
136 // see AliITSRawStreamSDDCompressed for details on the dta format
139 Int_t ndigits = ITSdigits->GetEntries();
142 for (Int_t digit=0;digit<ndigits;digit++) {
143 digs = (AliITSdigit*)ITSdigits->UncheckedAt(digit);
144 Int_t iz=digs->GetCoord1(); // Anode
145 Int_t ix=digs->GetCoord2(); // Time
146 Int_t is=digs->GetCompressedSignal(); // ADC Signal - 8 bit
159 else if(is<16) shift=3;
160 else if(is<32) shift=4;
161 else if(is<64) shift=5;
162 else if(is<128) shift=6;
164 adcEncoded=shift+((is-(1<<shift))<<3);
165 dataWord+=adcEncoded;
167 buf[fIndex]=dataWord;
170 UInt_t finalWord=UInt_t(15)<<28;
173 buf[fIndex]=finalWord;
176 //______________________________________________________________________
178 void AliITSDDLRawData::GetDigitsSDD(TClonesArray *ITSdigits,Int_t mod,Int_t modR,Int_t ddl,UInt_t *buf){
179 //This method packs the SDD digits in a proper 32 bits structure
185 Int_t ndigits = ITSdigits->GetEntries();
188 Int_t digarr[512][256];
189 for(Int_t i=0;i<512;i++){
190 for(Int_t j=0;j<256;j++){
194 //word to select the 12 carlos for the 12 modules
195 UInt_t carlosid=0x30000000+mod;
198 buf[fIndex]=carlosid;
204 Bool_t flag = kFALSE;
206 Int_t bitinfo1[4] = {3,8,3,7}; //vector with info on bit for timebin info
207 Int_t wordinfo1[4]= {0,0,0,0}; //vector with word info for timebin info
208 Int_t bitinfo2[2] = {3,18}; //vector with info on bit for EOR (end of row) info
209 Int_t wordinfo2[3]= {1,65593}; //vector with word info for anode info
211 /* for time bin info: word n bits meaning
212 0 3 next info is timebin
213 8 3 next word is 8 bit long
214 tb value 8 timebin value
215 n (2->7) 3 next info is n bit long
216 signal n signal value
218 for anode info: 1 3 next 18 bits are for EOR
219 increments the anode value
221 EOR 18 error codes + other info
226 ftxt.open("SDDdigits.txt",ios::app);
227 for (Int_t digit=0;digit<ndigits;digit++) {
228 digs = (AliITSdigit*)ITSdigits->UncheckedAt(digit);
229 iz=digs->GetCoord1(); // Anode
230 ix=digs->GetCoord2(); // Time
231 is=digs->GetCompressedSignal(); // ADC Signal
234 ftxt<<"DDL:"<<ddl<<" MID:"<<modR<<" An:"<<iz<<" T:"<<ix<<" A:"<<is<<endl;
235 if (is>255){Error("GetDigitsSDD", "bits words is needed)!!!");}
238 for(Int_t anode=0;anode<512;anode++){
241 AliBitPacking::PackWord(word2,baseWord,first,last);
254 for(Int_t tb=0;tb<256;tb++){
255 if(digarr[anode][tb]!=0){
258 AliBitPacking::PackWord(word2,baseWord,first,last);
264 //non lossy compression as it is done in Carlos
265 //(data are already 10to8bit compressed by AMBRA
267 /* if value < 8 value = value - (1 << 2) (word is 2 bit long)
268 if value < 16 value = value - (1 << 3) (word is 3 bit long)
269 if value < 32 value = value - (1 << 4) (word is 4 bit long)
270 if value < 64 value = value - (1 << 5) (word is 5 bit long)
271 if value <128 value = value - (1 << 6) (word is 6 bit long)
272 if value >=128value = value - (1 << 7) (word is 7 bit long)
275 //if(digarr[anode][tb]<4) continue; // not write <4 cnts above tL
276 if(digarr[anode][tb]<8){
279 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
281 if(digarr[anode][tb]>=8 && digarr[anode][tb]<16){
284 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
286 if(digarr[anode][tb]>=16 && digarr[anode][tb]<32){
289 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
291 if(digarr[anode][tb]>=32 && digarr[anode][tb]<64){
294 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
296 if(digarr[anode][tb]>=64 && digarr[anode][tb]<128){
299 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
301 if(digarr[anode][tb]>=128){
304 wordinfo1[3] = digarr[anode][tb]-(1 << bitinfo1[3]);
307 for(Int_t ie=0;ie<4;ie++){
311 AliBitPacking::PackWord(word2,baseWord,first,last);
316 last = first+bitinfo1[ie]-1;
317 if(first < 30 && last < 30){
318 AliBitPacking::PackWord(wordinfo1[ie],baseWord,first,last);
323 UInt_t w = AliBitPacking::UnpackWord(wordinfo1[ie],0,29-first);
324 AliBitPacking::PackWord(w,baseWord,first,29);
325 Int_t lb = 29-first+1;
326 diff = bitinfo1[ie]-lb;
327 word2 = AliBitPacking::UnpackWord(wordinfo1[ie],lb,lb+diff-1);
329 if(anode<256) word = 2;//channel 0 of carlos
330 else word = 3; //channel 1 of carlos
331 AliBitPacking::PackWord(word,baseWord,30,31);
333 buf[fIndex]=baseWord;
340 word2 = wordinfo1[ie];
343 if(anode<256) word = 2; //channel 0 of carlos
344 else word = 3; //channel 1 of carlos
345 AliBitPacking::PackWord(word,baseWord,30,31);
347 buf[fIndex]=baseWord;
360 for(Int_t i=0;i<2;i++){
363 AliBitPacking::PackWord(word2,baseWord,first,last);
372 if(first < 30 && last < 30){
373 AliBitPacking::PackWord(word,baseWord,first,last); //3 bit code =1 -> next 18 bits for EOR
379 UInt_t w = AliBitPacking::UnpackWord(word,0,29-first);
380 AliBitPacking::PackWord(w,baseWord,first,29);
381 Int_t lb = 29-first+1;
383 word2 = AliBitPacking::UnpackWord(word,lb,lb+diff-1);
385 if(anode<256) word = 2;
387 AliBitPacking::PackWord(word,baseWord,30,31);
389 buf[fIndex]=baseWord;
402 if(anode<256) word = 2;
404 AliBitPacking::PackWord(word,baseWord,30,31);
406 buf[fIndex]=baseWord;
425 ////////////////////////////////////////////////////////////////////////////////////////
429 void AliITSDDLRawData::GetDigitsSPD(TClonesArray *ITSdigits,Int_t mod,Int_t ddl, UInt_t *buf, AliITSFOSignalsSPD* foSignals){
430 //This method packs the SPD digits in a proper 32 structure
431 //Since data is zero suppressed,the coordinates for the chip having zero digits
432 //doesn't get listed in the galice.root file. However the SPD format requires
433 //the empty chip to be written with chip header and chip trailer.
435 Int_t chipLow = AliITSRawStreamSPD::GetOnlineChipFromOffline(mod,0);
436 Int_t chipHigh = AliITSRawStreamSPD::GetOnlineChipFromOffline(mod,159);
438 if (chipLow>chipHigh) {chipLow -= 4; chipHigh += 4;}
439 UInt_t eq = AliITSRawStreamSPD::GetOnlineEqIdFromOffline(mod);
440 UInt_t hs = AliITSRawStreamSPD::GetOnlineHSFromOffline(mod);
442 // create int map to later hold all digits sorted
443 AliITSIntMap* digMap = new AliITSIntMap();
447 Int_t ndigits = ITSdigits->GetEntries(); //number of digits in the current module
448 //cout<<" Number of digits in the current module:"<<ndigits<<" module:"<<mod<<endl;
450 // _______________________________________________________________________
451 // Preprocess the digits - sort them in integer map (Henrik Tydesjo)
452 // Needed to have exact same order as in real raw data
457 if (fVerbose==2) ftxt.open("SPDdigits.txt",ios::app);
458 for (Int_t digit=0; digit<ndigits; digit++) {
459 digs = (AliITSdigit*) ITSdigits->UncheckedAt(digit);
460 /*---------------------------------------------------------------------------
461 * Each module contains 5 read out chips of 256 rows and 32 columns.
462 * So, the cell number in Z direction varies from 0 to 159.
463 * ---------------------------------------------------------------------*/
464 Int_t iz=digs->GetCoord1(); // Cell number in Z direction
465 Int_t ix=digs->GetCoord2(); // Cell number in X direction
467 if(fVerbose==2) ftxt<<"DDL:"<<ddl<<" Mod:"<<mod<<" Row:"<<ix<<" Col:"<<iz<<endl;
468 UInt_t dummyDDL, dummyHS, chip, col, row;
469 AliITSRawStreamSPD::OfflineToOnline(mod,iz,ix,dummyDDL,dummyHS,chip,col,row);
471 // insert digit into map...
472 // (reverse order of cols and rows as in real raw data)
473 digMap->Insert(chip*256*32+(31-col)*256+(255-row),row);
477 // _______________________________________________________________________
478 // Procedure for writing raw data (Henrik Tydesjo)
479 // Reimplemented because of unreadability (5 Mar 2009)
480 // Now also with fast-or signals
481 Int_t previousChip = chipLow-1;
482 Int_t chip = chipLow-1;
483 UInt_t chipHitCount = 0;
486 UInt_t nrHits = digMap->GetNrEntries();
487 for (UInt_t nHit=0; nHit<nrHits; nHit++) {
489 Int_t key = digMap->GetKeyIndex(nHit);
491 Int_t col = 31 - (key%(256*32))/256;
492 Int_t row = digMap->GetValIndex(nHit);
494 // add trailer for previous chip (if there was one...)
495 if (chip>previousChip && previousChip>chipLow-1) {
496 WriteChipTrailer(buf, chipHitCount, foSignals->GetSignal(eq,hs,previousChip), baseWord);
499 // add headers/trailers for chips without hits (if any)
500 for (Int_t ch=previousChip+1; ch<chip; ch++) {
501 WriteChipHeader(ch, hs, baseWord);
502 WriteChipTrailer(buf, 0, foSignals->GetSignal(eq,hs,ch), baseWord);
505 // if new chip, add header
506 if (chip>previousChip) {
507 WriteChipHeader(chip, hs, baseWord);
515 WriteHit(buf,row,col,baseWord);
519 // add trailer for last chip (if there was one...)
520 if (chip>chipLow-1) {
521 WriteChipTrailer(buf, chipHitCount, foSignals->GetSignal(eq,hs,chip), baseWord);
524 // add REMAINING headers/trailers for chips without hits (if any)
525 for (Int_t ch=chip+1; ch<=chipHigh; ch++) {
526 WriteChipHeader(ch, hs, baseWord);
527 WriteChipTrailer(buf, 0, foSignals->GetSignal(eq,hs,ch), baseWord);
529 // _______________________________________________________________________
539 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
541 Int_t AliITSDDLRawData::RawDataSPD(TBranch* branch, AliITSFOSignalsSPD* foSignals){
542 //This method creates the Raw data files for SPD detectors
543 const Int_t kSize=21000; //256*32*5=40960 max number of digits per module
544 UInt_t buf[kSize]; //One buffer cell can contain 2 digits
547 TClonesArray*& digits = * (TClonesArray**) branch->GetAddress();
549 AliFstream* outfile; // logical name of the output file
550 AliRawDataHeaderSim header;
553 for(Int_t ddl=0;ddl<AliDAQ::NumberOfDdls("ITSSPD");ddl++){
554 fileName.Form("%s",AliDAQ::DdlFileName("ITSSPD",ddl)); //The name of the output file.
555 outfile = new AliFstream(fileName.Data());
556 //write Dummy DATA HEADER
557 UInt_t dataHeaderPosition=outfile->Tellp();
558 outfile->WriteBuffer((char*)(&header),sizeof(header));
559 //Loops over Modules of a particular DDL
560 for (Int_t mod=0; mod<AliITSRawStreamSPD::kModulesPerDDL; mod++){
561 Int_t moduleNumber = AliITSRawStreamSPD::GetModuleNumber(ddl, mod);
563 branch->GetEvent(moduleNumber);
564 //For each Module, buf contains the array of data words in Binary format
565 //fIndex gives the number of 32 bits words in the buffer for each module
566 GetDigitsSPD(digits, moduleNumber, ddl, buf, foSignals);
567 outfile->WriteBuffer((char *)buf,((fIndex+1)*sizeof(UInt_t)));
568 for(Int_t i=0;i<(fIndex+1);i++){
574 //Write REAL DATA HEADER
575 UInt_t currentFilePosition=outfile->Tellp();
576 outfile->Seekp(dataHeaderPosition);
577 header.fSize=currentFilePosition-dataHeaderPosition;
578 outfile->WriteBuffer((char*)(&header),sizeof(header));
585 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
587 Int_t AliITSDDLRawData::RawDataSSD(TBranch* branch){
589 //This method creates the Raw data files for SSD detectors
590 const Int_t kSize=1536;//768*2 Number of stripe * number of sides(N and P)
594 TClonesArray*& digits = * (TClonesArray**) branch->GetAddress();
596 AliFstream* outfile; // logical name of the output file
597 AliRawDataHeaderSim header;
600 for(Int_t i=0;i<AliDAQ::NumberOfDdls("ITSSSD");i++){
601 fileName.Form("%s",AliDAQ::DdlFileName("ITSSSD",i)); //The name of the output file.
602 outfile = new AliFstream(fileName.Data());
603 //write Dummy DATA HEADER
604 UInt_t dataHeaderPosition=outfile->Tellp();
605 outfile->WriteBuffer((char*)(&header),sizeof(header));
607 //Loops over Modules of a particular DDL
608 for (Int_t mod=0; mod<AliITSRawStreamSSD::kModulesPerDDL; mod++){
609 Int_t moduleNumber = AliITSRawStreamSSD::GetModuleNumber(i, mod);
610 if(moduleNumber!=-1){
612 branch->GetEvent(moduleNumber);
613 //For each Module, buf contains the array of data words in Binary format
614 //fIndex gives the number of 32 bits words in the buffer for each module
615 GetDigitsSSD(digits,mod,moduleNumber,i,buf);
616 outfile->WriteBuffer((char *)buf,((fIndex+1)*sizeof(UInt_t)));
621 //Write REAL DATA HEADER
622 UInt_t currentFilePosition=outfile->Tellp();
623 outfile->Seekp(dataHeaderPosition);
624 header.fSize=currentFilePosition-dataHeaderPosition;
625 header.SetAttribute(0); // valid data
626 outfile->WriteBuffer((char*)(&header),sizeof(header));
633 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
635 Int_t AliITSDDLRawData::RawDataSDD(TBranch* branch, AliITSDDLModuleMapSDD* ddlsdd){
636 //This method creates the Raw data files for SDD detectors
637 const Int_t kSize=131072; //256*512
641 TClonesArray*& digits = * (TClonesArray**) branch->GetAddress();
643 AliFstream* outfile; // logical name of the output file
644 AliRawDataHeaderSim header;
646 if(fSDDRawFormat!=0){
647 for(Int_t ibit=0; ibit<8; ibit++) header.SetAttribute(ibit);
649 for(Int_t ibit=0; ibit<5; ibit++) header.SetAttribute(ibit);
650 for(Int_t ibit=5; ibit<8; ibit++) header.ResetAttribute(ibit);
652 UInt_t skippedword=0;
653 UInt_t carlosFooterWord=0;
654 UInt_t fifoFooterWord=0;
657 retcode = AliBitPacking::PackWord(0x3FFFFFFF,carlosFooterWord,0,31);
658 retcode = AliBitPacking::PackWord(0x3F1F1F1F,fifoFooterWord,0,31);
659 if(fSDDRawFormat!=0) retcode = AliBitPacking::PackWord(0x7F000000,jitterWord,0,31);
660 else retcode = AliBitPacking::PackWord(0x80000000,jitterWord,0,31);
663 for(Int_t i=0;i<AliDAQ::NumberOfDdls("ITSSDD");i++){
664 fileName.Form("%s",AliDAQ::DdlFileName("ITSSDD",i)); //The name of the output file.
665 outfile = new AliFstream(fileName.Data());
666 //write Dummy DATA HEADER
667 UInt_t dataHeaderPosition=outfile->Tellp();
668 outfile->WriteBuffer((char*)(&header),sizeof(header));
671 //first 1 "dummy" word to be skipped
672 if(fSDDRawFormat!=0){
673 retcode = AliBitPacking::PackWord(0xFFFFFFFF,skippedword,0,31);
674 outfile->WriteBuffer((char*)(&skippedword),sizeof(skippedword));
677 //Loops over Modules of a particular DDL
678 for (Int_t mod=0; mod<AliITSRawStreamSDD::kModulesPerDDL; mod++){
679 Int_t moduleNumber = ddlsdd->GetModuleNumber(i, mod);
680 if(moduleNumber!=-1){
682 branch->GetEvent(moduleNumber);
684 //For each Module, buf contains the array of data words in Binary format
685 //fIndex gives the number of 32 bits words in the buffer for each module
686 // cout<<"MODULE NUMBER:"<<mapSDD[i][mod]<<endl;
687 if(fSDDRawFormat==0){
688 GetDigitsSDDCompressed(digits,mod,buf);
689 outfile->WriteBuffer((char *)buf,((fIndex+1)*sizeof(UInt_t)));
691 GetDigitsSDD(digits,mod,moduleNumber,i,buf);
692 outfile->WriteBuffer((char *)buf,((fIndex+1)*sizeof(UInt_t)));
693 for(Int_t iw=0;iw<3;iw++) outfile->WriteBuffer((char*)(&carlosFooterWord),sizeof(carlosFooterWord));
698 // 12 words with FIFO footers (=4 FIFO x 3 3F1F1F1F words per DDL)
699 if(fSDDRawFormat!=0){
700 for(Int_t iw=0;iw<12;iw++) outfile->WriteBuffer((char*)(&fifoFooterWord),sizeof(fifoFooterWord));
702 outfile->WriteBuffer((char*)(&jitterWord),sizeof(jitterWord));
703 //Write REAL DATA HEADER
704 UInt_t currentFilePosition=outfile->Tellp();
705 outfile->Seekp(dataHeaderPosition);
706 header.fSize=currentFilePosition-dataHeaderPosition;
707 header.SetAttribute(0); // valid data
708 outfile->WriteBuffer((char*)(&header),sizeof(header));
715 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
717 void AliITSDDLRawData::WriteChipHeader(Int_t ChipAddr,Int_t halfStave,UInt_t &BaseWord){
718 //This method writes a chip header
719 //cout<<"Chip: "<<ChipAddr<<" Half Stave module:"<<halfStave<<endl;
721 AliBitPacking::PackWord(ChipAddr,BaseWord,16,19);
722 // At the moment the event count is always 0 (bits 20-26)
723 AliBitPacking::PackWord(0,BaseWord,20,26);
724 AliBitPacking::PackWord(halfStave,BaseWord,27,29);
725 AliBitPacking::PackWord(0x1,BaseWord,30,31);
727 }//end WriteChipHeader
729 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
731 void AliITSDDLRawData::WriteChipTrailer(UInt_t *buf, Int_t ChipHitCount, Bool_t foBit, UInt_t &BaseWord){
732 //This method writes a chip trailer
734 if((ChipHitCount%2)!=0){
735 AliBitPacking::PackWord(0xC000,BaseWord,16,31);
737 AliBitPacking::PackWord(ChipHitCount,BaseWord,0,11);
738 AliBitPacking::PackWord(0x0,BaseWord,12,12);
739 AliBitPacking::PackWord(foBit,BaseWord,13,13);
740 AliBitPacking::PackWord(0x0,BaseWord,14,15);
742 buf[fIndex]=BaseWord;
745 }//end WriteChipTrailer
747 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
749 void AliITSDDLRawData::WriteHit(UInt_t *buf,Int_t RowAddr,Int_t HitAddr,UInt_t &BaseWord){
750 //This method writs an hit
752 AliBitPacking::PackWord(HitAddr,BaseWord,16,20);
753 AliBitPacking::PackWord(RowAddr,BaseWord,21,28);
754 AliBitPacking::PackWord(2,BaseWord,30,31);
757 AliBitPacking::PackWord(HitAddr,BaseWord,0,4);
758 AliBitPacking::PackWord(RowAddr,BaseWord,5,12);
759 AliBitPacking::PackWord(2,BaseWord,14,15);
761 buf[fIndex]=BaseWord;