Changing once more (hopefully we get it correct this time...) the logic to trig the...
[u/mrichter/AliRoot.git] / ITS / AliITSCompressRawDataSDD.cxx
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7765ca40 1/**************************************************************************
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
f7bcb379 16/* $Id$*/
7765ca40 17
18///////////////////////////////////////////////////////////////////
19// //
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) //
24// 30 - //
25// 29 | //
26// 28 |-> 4 bits to identify the Carlos (0-11) inside the DDL //
27// 27 - //
de075dae 28// 26 detecor side (0= left, =right) //
7765ca40 29// 25 - //
30// 24 | //
31// 23 | //
32// 22 | //
33// 21 |-> 8 bits to identify the anode number (0-255) //
34// 20 | //
35// 19 | //
36// 18 - //
37// 17 - //
38// 16 | //
39// 15 | //
40// 14 | //
41// 13 |-> 8 bits to identify the time bin (0-255) //
42// 12 | //
43// 11 | //
44// 10 - //
45// 9 - //
46// 8 | //
47// 7 | //
48// 6 | //
49// 5 | //
50// 4 |-> 10 bit for the ADC counts //
51// 3 | //
52// 2 | //
53// 1 | //
54// 0 - //
55// //
de075dae 56// Plus 2 typs of control words: //
f7bcb379 57// - End of module data (needed by the Cluster Finder) //
58// first 4 most significant bits = 1111 //
de075dae 59// - Jitter word //
60// first 4 most significant bits = 1000 //
7765ca40 61// //
62// Origin: F.Prino, Torino, prino@to.infn.it //
63// //
64///////////////////////////////////////////////////////////////////
65
f7bcb379 66#include"AliLog.h"
7765ca40 67#include "AliITSCompressRawDataSDD.h"
68#include "AliRawReader.h"
69#include "AliRawReaderDate.h"
70#include "AliRawReaderRoot.h"
71#include "AliITSRawStreamSDD.h"
72
73
74ClassImp(AliITSCompressRawDataSDD)
75
f7bcb379 76AliITSCompressRawDataSDD::AliITSCompressRawDataSDD():
77TObject(),
78fRawReader(0),
79fPointerToData(0),
de075dae 80fSizeInMemory(0)
f7bcb379 81{
82 // default constructor
7765ca40 83}
84//______________________________________________________________________
f7bcb379 85AliITSCompressRawDataSDD::~AliITSCompressRawDataSDD(){
86 // raw reader is passed from outdside, don't delete it
87}
f7bcb379 88//______________________________________________________________________
89UInt_t AliITSCompressRawDataSDD::CompressEvent(UChar_t* inputPtr){
90 // Method to be used in HLT
91 UInt_t siz=0;
92 memcpy(fPointerToData,inputPtr,32); // event header, 8 words
93 fPointerToData+=32;
94 siz+=32;
95 UInt_t word=0;
96 AliITSRawStreamSDD s(fRawReader);
6297cc01 97 s.SetDecompressAmbra(kFALSE);
f7bcb379 98 Int_t mask1=0xFF000000;
99 Int_t mask2=0x00FF0000;
100 Int_t mask3=0x0000FF00;
101 Int_t mask4=0x000000FF;
102 while(s.Next()){
de075dae 103 if(s.IsCompletedModule()==kTRUE){
104 word=15<<28;
105 word+=s.GetCarlosId();
f7bcb379 106 if(siz+4<fSizeInMemory){
2cc6c8fe 107 *(fPointerToData)=(word&mask4);
f7bcb379 108 ++fPointerToData;
109 *(fPointerToData)=(word&mask3)>>8;
110 ++fPointerToData;
2cc6c8fe 111 *(fPointerToData)=(word&mask2)>>16;
112 ++fPointerToData;
113 *(fPointerToData)=(word&mask1)>>24;
f7bcb379 114 ++fPointerToData;
115 siz+=4;
116 }
de075dae 117 }else if(s.IsCompletedDDL()==kTRUE){
118 word=8<<28;
119 word+=s.GetJitter();
120 if(siz+4<fSizeInMemory){
121 *(fPointerToData)=(word&mask4);
122 ++fPointerToData;
123 *(fPointerToData)=(word&mask3)>>8;
124 ++fPointerToData;
125 *(fPointerToData)=(word&mask2)>>16;
126 ++fPointerToData;
127 *(fPointerToData)=(word&mask1)>>24;
128 ++fPointerToData;
129 siz+=4;
130 }
131 }else{
132 word=s.GetCarlosId()<<27;
133 word+=s.GetChannel()<<26;
134 word+=s.GetCoord1()<<18;
135 word+=s.GetCoord2()<<10;
136 word+=s.GetEightBitSignal();
f7bcb379 137 if(siz+4<fSizeInMemory){
2cc6c8fe 138 *(fPointerToData)=(word&mask4);
f7bcb379 139 ++fPointerToData;
140 *(fPointerToData)=(word&mask3)>>8;
141 ++fPointerToData;
2cc6c8fe 142 *(fPointerToData)=(word&mask2)>>16;
143 ++fPointerToData;
144 *(fPointerToData)=(word&mask1)>>24;
f7bcb379 145 ++fPointerToData;
146 siz+=4;
147 }
148 }
149 }
150 return siz;
151}