/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-/* $Id: */
+/* $Id$*/
///////////////////////////////////////////////////////////////////////////////
///
///////////////////////////////////////////////////////////////////////////////
#include "AliITSRawStreamSDD.h"
+#include "AliITSRawStreamSDDCompressed.h"
#include "AliRawReader.h"
#include "AliLog.h"
ClassImp(AliITSRawStreamSDD)
-
-const Int_t AliITSRawStreamSDD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = {
-
- {240,241,242,246,247,248,252,253,254,258,259,260},
- {264,265,266,270,271,272,276,277,278,282,283,284},
- {288,289,290,294,295,296,300,301,302,306,307,308},
- {312,313,314,318,319,320,-1,-1,-1,-1,-1,-1},
- {243,244,245,249,250,251,255,256,257,261,262,263},
- {267,268,269,273,274,275,279,280,281,285,286,287},
- {291,292,293,297,298,299,303,304,305,309,310,311},
- {315,316,317,321,322,323,-1,-1,-1,-1,-1,-1},
- {324,325,326,327,332,333,334,335,340,341,342,343},
- {348,349,350,351,356,357,358,359,364,365,366,367},
- {372,373,374,375,380,381,382,383,388,389,390,391},
- {396,397,398,399,404,405,406,407,412,413,414,415},
- {420,421,422,423,428,429,430,431,436,437,438,439},
- {444,445,446,447,452,453,454,455,460,461,462,463},
- {468,469,470,471,476,477,478,479,484,485,486,487},
- {492,493,494,495,-1,-1,-1,-1,-1,-1,-1,-1},
- {328,329,330,331,336,337,338,339,344,345,346,347},
- {352,353,354,355,360,361,362,363,368,369,370,371},
- {376,377,378,379,384,385,386,387,392,393,394,395},
- {400,401,402,403,408,409,410,411,416,417,418,419},
- {424,425,426,427,432,433,434,435,440,441,442,443},
- {448,449,450,451,456,457,458,459,464,465,466,467},
- {472,473,474,475,480,481,482,483,488,489,490,491},
- {496,497,498,499,-1,-1,-1,-1,-1,-1,-1,-1}};
const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7};
+//______________________________________________________________________
AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) :
AliITSRawStream(rawReader),
+fDDLModuleMap(0),
fData(0),
-fCarlosId(0),
+fResetSkip(kTRUE),
fEventId(0),
+fCarlosId(-1),
fChannel(0),
fJitter(0),
-fNCarlos(kModulesPerDDL),
-fNfifo0(0),
-fNfifo1(0),
-fNfifo2(0),
-fNfifo3(0),
-fDDL(0){
+fEightBitSignal(0),
+fDecompressAmbra(kTRUE)
+{
// create an object to read ITS SDD raw digits
-
- for(Int_t i=0;i<2;i++){
- for(Int_t ic=0;ic<kModulesPerDDL;ic++){
- fChannelData[ic][i]=0;
- fLastBit[ic][i]=0;
- fChannelCode[ic][i]=0;
- fReadCode[ic][i]=kFALSE;
- fReadBits[ic][i]=0;
- fTimeBin[ic][i]=0;
- fAnode[ic][i]=0;
- }
- fLowThreshold[i]=0;
+ Reset();
+ for(Int_t im=0;im<kSDDModules;im++){
+ fLowThresholdArray[im][0]=0;
+ fLowThresholdArray[im][1]=0;
}
- for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0;
+ for(Int_t i=0;i<kFifoWords;i++) fNfifo[i]=0;
fRawReader->Reset();
fRawReader->Select("ITSSDD");
- // fRawReader->SelectEquipment(17, 101, 101);//select this for test data
- // fNCarlos = 8; //select this for test data
+ for(Short_t i=0; i<kCarlosWords; i++) fICarlosWord[i]=0x30000000 + i; // 805306368+i;
+ for(Short_t i=0; i<kFifoWords; i++) fIFifoWord[i]=0x30000010 + i; // 805306384+i;
}
+//______________________________________________________________________
+AliITSRawStreamSDD::AliITSRawStreamSDD(const AliITSRawStreamSDD& rs) :
+AliITSRawStream(rs.fRawReader),
+fDDLModuleMap(rs.fDDLModuleMap),
+fData(0),
+fResetSkip(kTRUE),
+fEventId(0),
+fCarlosId(-1),
+fChannel(0),
+fJitter(0),
+fEightBitSignal(0),
+fDecompressAmbra(kTRUE)
+{
+ // copy constructor
+ AliError("Copy constructor should not be used.");
+}
+//__________________________________________________________________________
+AliITSRawStreamSDD& AliITSRawStreamSDD::operator=(const AliITSRawStreamSDD& rs) {
+ // assignment operator
+ if (this!=&rs) {}
+ AliError("Assignment opertator should not be used.");
+ return *this;
+}
+
+//______________________________________________________________________
+AliITSRawStreamSDD::~AliITSRawStreamSDD(){
+ if(fDDLModuleMap) delete fDDLModuleMap;
+}
+//______________________________________________________________________
+UChar_t AliITSRawStreamSDD::ReadBlockAttributes(AliRawReader* rawReader){
+ // reads block attribuited from CDH
+ UChar_t *data;
+ rawReader->Reset();
+ rawReader->Select("ITSSDD");
+ do{
+ if(!rawReader->ReadNextData(data)) return 0x0;
+ }while(rawReader->GetDataSize()==0);
+ UChar_t attr=rawReader->GetBlockAttributes();
+ return attr;
+}
+//______________________________________________________________________
+AliITSRawStream* AliITSRawStreamSDD::CreateRawStreamSDD(AliRawReader* rawReader, UChar_t attributes){
+ // instantiates the proper raw stream from block attributes value
+
+ Int_t rawFormat=(attributes&0xE0)>>5;
+ rawReader->Reset();
+ AliITSRawStream* inputSDD;
+ if(rawFormat==0){
+ inputSDD=new AliITSRawStreamSDDCompressed(rawReader);
+ inputSDD->SetADCEncoded(kTRUE);
+ }else{
+ inputSDD=new AliITSRawStreamSDD(rawReader);
+ }
+ return inputSDD;
+}
+//______________________________________________________________________
+AliITSRawStream* AliITSRawStreamSDD::CreateRawStreamSDD(AliRawReader* rawReader){
+ // reads the data format from CDH and instantiates the proper raw stream
+ UChar_t attr=ReadBlockAttributes(rawReader);
+ return CreateRawStreamSDD(rawReader,attr);
+}
+//______________________________________________________________________
UInt_t AliITSRawStreamSDD::ReadBits()
{
// read bits from the given channel
return result;
}
+//______________________________________________________________________
Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const
{
// AMBRA decompression (from 8 to 10 bit)
if ((value & 0x80) == 0) {
return value & 0x7f;
} else if ((value & 0x40) == 0) {
+ if(value&1) return 0x080 + ((value & 0x3f) << 1);
return 0x081 + ((value & 0x3f) << 1);
} else if ((value & 0x20) == 0) {
+ if(value&1) return 0x103 + ((value & 0x1f) << 3);
return 0x104 + ((value & 0x1f) << 3);
} else {
+ if(value&1) return 0x207 + ((value & 0x1f) << 4);
return 0x208 + ((value & 0x1f) << 4);
}
}
+//______________________________________________________________________
Bool_t AliITSRawStreamSDD::Next()
{
// read the next raw digit
// returns kFALSE if there is no digit left
+// returns kTRUE and fCompletedModule=kFALSE and fCompletedDDL=kFALSE when a digit is found
+// returns kTRUE and fCompletedModule=kTRUE and fCompletedDDL=kFALSE when a module is completed (=3x3FFFFFFF footer words)
+// returns kTRUE and fCompletedModule=kFALSE and fCompletedDDL=kTRUE when a DDL is completed (=jitter word)
fPrevModuleID = fModuleID;
- fDDL=fRawReader->GetDDLID();
- Int_t ddln = fRawReader->GetDDLID();
- if(ddln <0) ddln=0;
- while (fSkip[ddln] < 9) {
- if (!fRawReader->ReadNextInt(fData))return kFALSE;
- if ((fData >> 30) == 0x01) continue; // JTAG word
- fSkip[ddln]++;
- }
-
+ fCompletedModule=kFALSE;
- Int_t countFoot[kModulesPerDDL];
- for(Int_t i=0;i<kModulesPerDDL;i++) countFoot[i]=0;
- UInt_t iCarlos0Word=805306368;
- UInt_t iCarlos1Word=805306369;
- UInt_t iCarlos2Word=805306370;
- UInt_t iCarlos3Word=805306371;
- UInt_t iCarlos4Word=805306372;
- UInt_t iCarlos5Word=805306373;
- UInt_t iCarlos6Word=805306374;
- UInt_t iCarlos7Word=805306375;
- UInt_t iCarlos8Word=805306376;
- UInt_t iCarlos9Word=805306377;
- UInt_t iCarlos10Word=805306378;
- UInt_t iCarlos11Word=805306379;
- UInt_t iFifo0Word=805306384;
- UInt_t iFifo1Word=805306385;
- UInt_t iFifo2Word=805306386;
- UInt_t iFifo3Word=805306387;
while (kTRUE) {
- if ((fChannel < 0) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel])) {
+ if(fResetSkip){
+ Reset();
+ Bool_t kSkip = SkipHeaderWord();
+ if(!kSkip) return kSkip;
+ fResetSkip=kFALSE;
+ }
+ if ((fChannel < 0) || (fCarlosId < 0) || (fChannel >= 2) || (fCarlosId >= kModulesPerDDL) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel]) ) {
+ if (!fRawReader->ReadNextInt(fData)) return kFALSE; // read next word
- if (!fRawReader->ReadNextInt(fData)){
- return kFALSE; // read next word
- }
- ddln = fRawReader->GetDDLID();
- if(ddln!=fDDL){
- Reset();
- for(Int_t icr=0;icr<kModulesPerDDL;icr++) countFoot[icr]=0;
- }
- if(ddln < 0 || ddln > (kDDLsNumber-1)) ddln = 0;
- while (fSkip[ddln] < 9) {
- if (!fRawReader->ReadNextInt(fData)){
- return kFALSE;
- }
- if ((fData >> 30) == 0x01) continue; // JTAG word
- fSkip[ddln]++;
- }
- fChannel = -1;
- if((fData>=iCarlos0Word&&fData<=iCarlos11Word)||(fData>=iFifo0Word&&fData<=iFifo3Word)){
- if(fData==iCarlos0Word){
- fCarlosId = 0;
- fNfifo0 = fCarlosId;
- }
- else if (fData==iCarlos1Word){
- fCarlosId = 1;
- fNfifo0 = fCarlosId;
- }
- else if (fData==iCarlos2Word){
- fCarlosId = 2;
- if(fNCarlos == 8) fNfifo1 = fCarlosId;
- else fNfifo0 = fCarlosId;
- }
- else if (fData==iCarlos3Word){
- fCarlosId = 3;
- fNfifo1 = fCarlosId;
- }
- else if (fData==iCarlos4Word){
- fCarlosId = 4;
- if(fNCarlos == 8) fNfifo2 = fCarlosId;
- else fNfifo1 = fCarlosId;
- }
- else if (fData==iCarlos5Word){
- fCarlosId = 5;
- if(fNCarlos == 8) fNfifo2 = fCarlosId;
- else fNfifo1 = fCarlosId;
- }
- else if (fData==iCarlos6Word){
- fCarlosId = 6;
- if(fNCarlos == 8) fNfifo3 = fCarlosId;
- else fNfifo2 = fCarlosId;
- }
- else if (fData==iCarlos7Word){
- fCarlosId = 7;
- if(fNCarlos == 8) fNfifo3 = fCarlosId;
- else fNfifo2 = fCarlosId;
- }
- else if (fData==iCarlos8Word){
- fCarlosId = 8;
- fNfifo2 = fCarlosId;
- }
- else if (fData==iCarlos9Word){
- fCarlosId = 9;
- fNfifo3 = fCarlosId;
- }
- else if (fData==iCarlos10Word){
- fCarlosId = 10;
- fNfifo3 = fCarlosId;
- }
- else if (fData==iCarlos11Word){
- fCarlosId = 11;
- fNfifo3 = fCarlosId;
- }
- else if (fData==iFifo0Word){
- fCarlosId = fNfifo0;
- }
- else if (fData==iFifo1Word){
- fCarlosId = fNfifo1;
- }
- else if (fData==iFifo2Word){
- fCarlosId = fNfifo2;
- }
- else if (fData==iFifo3Word){
- fCarlosId = fNfifo3;
- }
- }
- if(fData==1059004191) continue;
- if (fNCarlos == 8 && (fCarlosId == 8 || fCarlosId == 9 ||
- fCarlosId ==10 || fCarlosId == 11))continue;
-
- fModuleID = fgkDDLModuleMap[fRawReader->GetDDLID()][fCarlosId];
-
- if ((fData >> 28) == 0x02) { // header
- fEventId = (fData >> 3) & 0x07FF;
- } else if ((fData >> 28) == 0x03) { // footer
- countFoot[fCarlosId]++; // stop before the last word (last word=jitter)
- Bool_t exit=kTRUE;
- for(Int_t ic=0;ic<fNCarlos;ic++){
- if(countFoot[ic]<3) exit=kFALSE;
- }
- if(exit){
- return kFALSE;
- }
- } else if ((fData >> 29) == 0x00) { // error
+ if((fData >> 16) == 0x7F00){ // jitter word
+ fJitter = fData&0x000000ff;
+ fResetSkip=kTRUE;
+ fCompletedModule=kFALSE;
+ fCompletedDDL=kTRUE;
+ return kTRUE;
+ }
- if ((fData & 0x00000163) != 0) {
- fRawReader->AddMajorErrorLog(kDataError,Form("Error code = %8.8x",fData));
- AliWarning(Form("error codes = %8.8x",fData));
- return kFALSE;
+ UInt_t nData28= fData >> 28;
+ UInt_t nData30= fData >> 30;
+
+
+ if (nData28== 0x02) { // header
+ fEventId = (fData >> 3) & 0x07FF;
+ } else if (nData28== 0x03) { // Carlos and FIFO words or Footers
+ if(fData>=fICarlosWord[0]&&fData<=fICarlosWord[11]) { // Carlos Word
+ fCarlosId = fData-fICarlosWord[0];
+ Int_t iFifoIdx = fCarlosId/3;
+ fNfifo[iFifoIdx] = fCarlosId;
+ } else if (fData>=fIFifoWord[0]&&fData<=fIFifoWord[3]){ // FIFO word
+ fCarlosId = fNfifo[fData-fIFifoWord[0]];
+ } else if(fData==0x3FFFFFFF && fCarlosId>=0 && fCarlosId<kModulesPerDDL){ // Carlos footer
+ fICountFoot[fCarlosId]++; // stop before the last word (last word=jitter)
+ if(fICountFoot[fCarlosId]==3){
+ fCompletedModule=kTRUE;
+ fCompletedDDL=kFALSE;
+ return kTRUE;
+ }
+ } else if(fData==0x3F1F1F1F){ // CarlosRX footer
+ // CARLOSRX footer -- do nothing
+ }else{
+ fRawReader->AddMajorErrorLog(kDataError,"Bad footer");
+ AliWarning(Form("Invalid data: bad footer %08X\n", fData));
+ return kFALSE;
+ }
+ } else if (nData30 == 0x02 || nData30 == 0x03) {
+ fChannel = nData30-2;
+ if(fCarlosId>=0 && fCarlosId<kModulesPerDDL){
+ fChannelData[fCarlosId][fChannel] +=
+ (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]);
+ fLastBit[fCarlosId][fChannel] += 30;
}
- } else if ((fData >> 30) == 0x01) { // JTAG word
- // ignored
- } else if ((fData >> 30) == 0x02) { // channel 0 data
-
- fChannel = 0;
- } else if ((fData >> 30) == 0x03) { // channel 1 data
- fChannel = 1;
+ } else if (nData28== 0x04) {
+ // JTAG word -- do nothing
} else { // unknown data format
fRawReader->AddMajorErrorLog(kDataFormatErr,Form("Invalid data %8.8x",fData));
- AliWarning(Form("invalid data: %8.8x\n", fData));
+ AliWarning(Form("Invalid data: %08X\n", fData));
return kFALSE;
}
- if (fChannel >= 0) { // add read word to the data
- fChannelData[fCarlosId][fChannel] +=
- (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]);
- fLastBit[fCarlosId][fChannel] += 30;
+ if(fCarlosId>=0 && fCarlosId <kModulesPerDDL){
+ Int_t nDDL=fRawReader->GetDDLID();
+ if(nDDL>=0){
+ fModuleID = GetModuleNumber(nDDL,fCarlosId);
+ }
}
-
} else { // decode data
-
if (fReadCode[fCarlosId][fChannel]) {// read the next code word
fChannelCode[fCarlosId][fChannel] = ReadBits();
fReadCode[fCarlosId][fChannel] = kFALSE;
fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]];
-
} else { // read the next data word
UInt_t data = ReadBits();
fReadCode[fCarlosId][fChannel] = kTRUE;
} else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode
fTimeBin[fCarlosId][fChannel] = 0;
fAnode[fCarlosId][fChannel]++;
-
- }else { // ADC signal data
- fSignal = DecompAmbra(data + (1 << fChannelCode[fCarlosId][fChannel]) + fLowThreshold[fChannel]);
+ } else { // ADC signal data
+ fEightBitSignal=data + (1 << fChannelCode[fCarlosId][fChannel]);
+ if(fDecompressAmbra) fSignal = DecompAmbra(fEightBitSignal + fLowThresholdArray[fModuleID-kSPDModules][fChannel]);
fCoord1 = fAnode[fCarlosId][fChannel];
fCoord2 = fTimeBin[fCarlosId][fChannel];
fTimeBin[fCarlosId][fChannel]++;
+ fCompletedModule=kFALSE;
+ fCompletedDDL=kFALSE;
return kTRUE;
}
}
}
}
- return kFALSE;
-
+ return kFALSE;
}
+//______________________________________________________________________
void AliITSRawStreamSDD::Reset(){
+
//reset data member for a new ddl
-
for(Int_t i=0;i<2;i++){
for(Int_t ic=0;ic<kModulesPerDDL;ic++){
fChannelData[ic][i]=0;
fLastBit[ic][i]=0;
fChannelCode[ic][i]=0;
- fReadCode[ic][i]=kFALSE;
- fReadBits[ic][i]=0;
+ fReadCode[ic][i]=kTRUE;
+ fReadBits[ic][i]=3;
fTimeBin[ic][i]=0;
fAnode[ic][i]=0;
+ fICountFoot[ic]=0;
}
- fLowThreshold[i]=0;
}
- fChannel=-1;
- fDDL=fRawReader->GetDDLID();
}
+
+//______________________________________________________________________
+Bool_t AliITSRawStreamSDD::SkipHeaderWord(){
+ // skip the 1 DDL header word = 0xffffffff
+ while (kTRUE) {
+ if (!fRawReader->ReadNextInt(fData)) return kFALSE;
+ if ((fData >> 30) == 0x01) continue; // JTAG word
+ if(fData==0xFFFFFFFF) return kTRUE;
+ }
+}
+
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