1 /**************************************************************************
2 * Copyright(c) 2007-2009, 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 // Class to decode the SDD Raw Data from the CarlosRX format to //
21 // a compressed format consisting in a word of 32 bit per cell //
22 // The 32 bits for a data word are defined as follows: //
23 // 31 control bit (0=data word, 1= control word) //
26 // 28 |-> 4 bits to identify the Carlos (0-11) inside the DDL //
28 // 26 detecor side (0= left, =right) //
33 // 21 |-> 8 bits to identify the anode number (0-255) //
41 // 13 |-> 8 bits to identify the time bin (0-255) //
50 // 4 |-> 10 bit for the ADC counts //
56 // Plus 2 typs of control words: //
57 // - End of module data (needed by the Cluster Finder) //
58 // first 4 most significant bits = 1111 //
60 // first 4 most significant bits = 1000 //
62 // Origin: F.Prino, Torino, prino@to.infn.it //
64 ///////////////////////////////////////////////////////////////////
67 #include "AliITSCompressRawDataSDD.h"
68 #include "AliRawReader.h"
69 #include "AliRawReaderDate.h"
70 #include "AliRawReaderRoot.h"
71 #include "AliITSRawStreamSDD.h"
74 ClassImp(AliITSCompressRawDataSDD)
76 AliITSCompressRawDataSDD::AliITSCompressRawDataSDD():
82 // default constructor
84 //______________________________________________________________________
85 AliITSCompressRawDataSDD::~AliITSCompressRawDataSDD(){
86 // raw reader is passed from outdside, don't delete it
88 //______________________________________________________________________
89 UInt_t AliITSCompressRawDataSDD::CompressEvent(UChar_t* inputPtr){
90 // Method to be used in HLT
92 memcpy(fPointerToData,inputPtr,32); // event header, 8 words
96 AliITSRawStreamSDD s(fRawReader);
97 s.SetDecompressAmbra(kFALSE);
98 Int_t mask1=0xFF000000;
99 Int_t mask2=0x00FF0000;
100 Int_t mask3=0x0000FF00;
101 Int_t mask4=0x000000FF;
103 if(s.IsCompletedModule()==kTRUE){
105 word+=s.GetCarlosId();
106 if(siz+4<fSizeInMemory){
107 *(fPointerToData)=(word&mask4);
109 *(fPointerToData)=(word&mask3)>>8;
111 *(fPointerToData)=(word&mask2)>>16;
113 *(fPointerToData)=(word&mask1)>>24;
117 }else if(s.IsCompletedDDL()==kTRUE){
120 if(siz+4<fSizeInMemory){
121 *(fPointerToData)=(word&mask4);
123 *(fPointerToData)=(word&mask3)>>8;
125 *(fPointerToData)=(word&mask2)>>16;
127 *(fPointerToData)=(word&mask1)>>24;
132 word=s.GetCarlosId()<<27;
133 word+=s.GetChannel()<<26;
134 word+=s.GetCoord1()<<18;
135 word+=s.GetCoord2()<<10;
136 word+=s.GetEightBitSignal();
137 if(siz+4<fSizeInMemory){
138 *(fPointerToData)=(word&mask4);
140 *(fPointerToData)=(word&mask3)>>8;
142 *(fPointerToData)=(word&mask2)>>16;
144 *(fPointerToData)=(word&mask1)>>24;