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51504028 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | ||
16 | // Authors: | |
17 | // Mario Rodriguez Cahuantzi <mrodrigu@mail.cern.ch> | |
18 | // Arturo Fernandez Tellez <afernan@mail.cern.ch> | |
19 | //____________________________________________________________________ | |
20 | // | |
21 | // ACORDE | |
22 | // Class for reading ACORDE RAW data in TOF data format | |
23 | // | |
24 | #include "AliACORDERawReader.h" | |
25 | #include "AliBitPacking.h" | |
26 | #include "TBits.h" | |
27 | ||
28 | #include <Riostream.h> | |
29 | #include "TMath.h" | |
30 | #include "TH1F.h" | |
31 | #include "TArrayI.h" | |
32 | #include "AliLog.h" | |
33 | ||
34 | ClassImp(AliACORDERawReader) | |
35 | ||
36 | AliACORDERawReader::AliACORDERawReader (AliRawReader *rawReader, Bool_t isOnline): | |
f21fc003 | 37 | TNamed("ACORDERawReader","read raw ACORDE data"), |
51504028 | 38 | fRawReader(rawReader), |
39 | fData(NULL), | |
40 | fPosition(0), | |
b9a9af93 | 41 | fIsOnline(isOnline), |
42 | fDataSize(0) | |
51504028 | 43 | { |
44 | ||
45 | fWord[0] = fWord[1] = fWord[2] = fWord[3] = 0; | |
46 | ||
51504028 | 47 | } |
48 | //_____________________________________________________________________________ | |
49 | AliACORDERawReader::~AliACORDERawReader () | |
50 | { | |
51 | } | |
52 | //_____________________________________________________________________________ | |
53 | Bool_t AliACORDERawReader::Next() | |
54 | { | |
55 | ||
b9a9af93 | 56 | // Read next digit from the ACORDE raw data stream; |
51504028 | 57 | // return kFALSE in case of error or no digits left |
58 | ||
59 | if (fPosition >= 0) return kFALSE; | |
60 | ||
61 | if (!fRawReader->ReadNextData(fData)) return kFALSE; | |
62 | if (fRawReader->GetDataSize() == 0) return kFALSE; | |
63 | ||
64 | fDataSize = fRawReader->GetDataSize(); | |
65 | if (fDataSize != 16) { | |
66 | fRawReader->AddFatalErrorLog(kRawDataSizeErr,Form("size %d != 16",fDataSize)); | |
67 | AliWarning(Form("Wrong ACORDE raw data size: %d, expected 16 bytes!",fDataSize)); | |
68 | return kFALSE; | |
69 | } | |
70 | ||
71 | fPosition = 0; | |
72 | ||
73 | for (Int_t i=0; i<4; i++) | |
74 | fWord[i] = GetNextWord(); | |
75 | ||
76 | return kTRUE; | |
77 | ||
78 | ||
79 | } | |
80 | //_____________________________________________________________________________ | |
81 | Int_t AliACORDERawReader::GetPosition() | |
82 | { | |
83 | // Sets the position in the | |
84 | // input stream | |
85 | if (((fRawReader->GetDataSize() * 8) % 32) != 0) | |
86 | AliFatal(Form("Incorrect raw data size ! %d words are found !",fRawReader->GetDataSize())); | |
87 | return (fRawReader->GetDataSize() * 8) / 32; | |
88 | } | |
89 | //_____________________________________________________________________________ | |
90 | UInt_t AliACORDERawReader::GetNextWord() | |
91 | { | |
92 | ||
a65a7e70 | 93 | // Returns the next 32 bit word inside the raw data payload. |
51504028 | 94 | // The method is supposed to be endian (platform) independent. |
95 | ||
96 | ||
97 | if (!fData || fPosition < 0) | |
98 | AliFatal("Raw data payload buffer is not yet initialized !"); | |
99 | ||
100 | UInt_t word = 0; | |
101 | word |= fData[fPosition++]; | |
102 | word |= fData[fPosition++] << 8; | |
103 | word |= fData[fPosition++] << 16; | |
104 | word |= fData[fPosition++] << 24; | |
105 | ||
106 | return word; | |
107 | ||
108 | ||
109 | } | |
110 |