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78001a73 | 1 | // @(#) $Id$ |
2 | ||
3 | // Author: Constantin Loizides <mailto:loizides@ikf.uni-frankfurt.de> | |
4 | //*-- Copyright © ALICE HLT Group | |
5 | ||
6 | #include "AliHLTTPCRootTypes.h" | |
7 | #include "AliHLTTPCStandardIncludes.h" | |
8 | #include "AliHLTTPCLogging.h" | |
9 | ||
10 | #include "AliHLTTPCDDLRawReader.h" | |
11 | ||
12 | /************************************************************************** | |
13 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
14 | * * | |
15 | * Author: The ALICE Off-line Project. * | |
16 | * Contributors are mentioned in the code where appropriate. * | |
17 | * * | |
18 | * Permission to use, copy, modify and distribute this software and its * | |
19 | * documentation strictly for non-commercial purposes is hereby granted * | |
20 | * without fee, provided that the above copyright notice appears in all * | |
21 | * copies and that both the copyright notice and this permission notice * | |
22 | * appear in the supporting documentation. The authors make no claims * | |
23 | * about the suitability of this software for any purpose. It is * | |
24 | * provided "as is" without express or implied warranty. * | |
25 | **************************************************************************/ | |
26 | ||
27 | /** \class AliHLTTPCDDLRawReader | |
28 | <pre> | |
29 | //_____________________________________________________________ | |
30 | // AliHLTTPCDDLRawReader (taken from the offline AliROOT code, | |
31 | // original authors: D.Favretto and A.K.Mohanty) | |
32 | // | |
33 | // This is the base class for reading ddl raw data | |
34 | // and providing information about digits | |
35 | </pre> | |
36 | */ | |
37 | ||
38 | ClassImp(AliHLTTPCDDLRawReader) | |
39 | ||
40 | AliHLTTPCDDLRawReader::AliHLTTPCDDLRawReader() | |
41 | { | |
42 | fMiniHeader = NULL; | |
43 | fCount = 0; | |
44 | fSelectDetectorID = -1; | |
45 | fSelectMinDDLID = -1; | |
46 | fSelectMaxDDLID = -1; | |
47 | } | |
48 | ||
49 | AliHLTTPCDDLRawReader::~AliHLTTPCDDLRawReader() | |
50 | { | |
51 | } | |
52 | ||
53 | void AliHLTTPCDDLRawReader::Select(Int_t detectorID, Int_t minDDLID, Int_t maxDDLID) | |
54 | { | |
55 | // read only data of the detector with the given ID and in the given | |
56 | // range of DDLs (minDDLID <= DDLID < maxDDLID). | |
57 | // no selection is applied if a value < 0 is used. | |
58 | ||
59 | fSelectDetectorID = detectorID; | |
60 | fSelectMinDDLID = minDDLID; | |
61 | fSelectMaxDDLID = maxDDLID; | |
62 | } | |
63 | ||
64 | Bool_t AliHLTTPCDDLRawReader::IsSelected() | |
65 | { | |
66 | // apply the selection (if any) | |
67 | ||
68 | if (fSelectDetectorID >= 0) { | |
69 | if (fMiniHeader->fDetectorID != fSelectDetectorID) return kFALSE; | |
70 | if ((fSelectMinDDLID >= 0) && (fMiniHeader->fDDLID < fSelectMinDDLID)) | |
71 | return kFALSE; | |
72 | if ((fSelectMaxDDLID >= 0) && (fMiniHeader->fDDLID >= fSelectMaxDDLID)) | |
73 | return kFALSE; | |
74 | } | |
75 | return kTRUE; | |
76 | } | |
77 | ||
78 | Bool_t AliHLTTPCDDLRawReader::CheckMiniHeader() | |
79 | { | |
80 | // check the magic number of the mini header | |
81 | ||
82 | if ((fMiniHeader->fMagicWord[2] != 0x12) || | |
83 | (fMiniHeader->fMagicWord[1] != 0x34) || | |
84 | (fMiniHeader->fMagicWord[0] != 0x56)) { | |
85 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::CheckMiniHeader","MH") | |
86 | <<"DDL mini header has wrong magic word!"<<ENDLOG; | |
87 | return kFALSE; | |
88 | } | |
89 | return kTRUE; | |
90 | } | |
91 | ||
92 | Bool_t AliHLTTPCDDLRawReader::ReadNextInt(UInt_t& data) | |
93 | { | |
94 | // reads the next 4 bytes at the current position | |
95 | // returns kFALSE if the data could not be read | |
96 | ||
97 | while (fCount == 0) { | |
98 | if (!ReadMiniHeader()) return kFALSE; | |
99 | } | |
100 | if (fCount < (Int_t) sizeof(data)) { | |
101 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::ReadNextInt","Data") | |
102 | <<AliHLTTPCLog::kDec<<"Too few data left ("<<fCount<<") to read UInt_t!"<<ENDLOG; | |
103 | return kFALSE; | |
104 | } | |
105 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
106 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::ReadNextInt","Data") | |
107 | <<"Could not read data."<<ENDLOG; | |
108 | return kFALSE; | |
109 | } | |
110 | return kTRUE; | |
111 | } | |
112 | ||
113 | Bool_t AliHLTTPCDDLRawReader::ReadNextShort(UShort_t& data) | |
114 | { | |
115 | // reads the next 2 bytes at the current position | |
116 | // returns kFALSE if the data could not be read | |
117 | ||
118 | while (fCount == 0) { | |
119 | if (!ReadMiniHeader()) return kFALSE; | |
120 | } | |
121 | if (fCount < (Int_t) sizeof(data)) { | |
122 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::ReadNextShort","Data") | |
123 | <<AliHLTTPCLog::kDec<<"Too few data left ("<<fCount<<") to read UShort_t!"<<ENDLOG; | |
124 | return kFALSE; | |
125 | } | |
126 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
127 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::ReadNextShort","Data") | |
128 | <<"Could not read data."<<ENDLOG; | |
129 | return kFALSE; | |
130 | } | |
131 | return kTRUE; | |
132 | } | |
133 | ||
134 | Bool_t AliHLTTPCDDLRawReader::ReadNextChar(UChar_t& data) | |
135 | { | |
136 | // reads the next 1 byte at the current stream position | |
137 | // returns kFALSE if the data could not be read | |
138 | ||
139 | while (fCount == 0) { | |
140 | if (!ReadMiniHeader()) return kFALSE; | |
141 | } | |
142 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
143 | LOG(AliHLTTPCLog::kError,"AliHLTTPCDDLRawReader::ReadNextChar","Data") | |
144 | <<"Could not read data."<<ENDLOG; | |
145 | return kFALSE; | |
146 | } | |
147 | return kTRUE; | |
148 | } | |
149 |