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240d63be | 1 | // @(#) $Id$ |
2 | ||
3 | // Author: Constantin Loizides <mailto:loizides@ikf.uni-frankfurt.de> | |
4 | //*-- Copyright © ALICE HLT Group | |
5 | ||
4aa41877 | 6 | #include "AliHLTRootTypes.h" |
7 | #include "AliHLTStandardIncludes.h" | |
8 | #include "AliHLTLogging.h" | |
240d63be | 9 | |
4aa41877 | 10 | #include "AliHLTDDLRawReader.h" |
240d63be | 11 | |
5929c18d | 12 | #if __GNUC__ >= 3 |
13 | using namespace std; | |
14 | #endif | |
15 | ||
240d63be | 16 | /************************************************************************** |
17 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
18 | * * | |
19 | * Author: The ALICE Off-line Project. * | |
20 | * Contributors are mentioned in the code where appropriate. * | |
21 | * * | |
22 | * Permission to use, copy, modify and distribute this software and its * | |
23 | * documentation strictly for non-commercial purposes is hereby granted * | |
24 | * without fee, provided that the above copyright notice appears in all * | |
25 | * copies and that both the copyright notice and this permission notice * | |
26 | * appear in the supporting documentation. The authors make no claims * | |
27 | * about the suitability of this software for any purpose. It is * | |
28 | * provided "as is" without express or implied warranty. * | |
29 | **************************************************************************/ | |
30 | ||
4aa41877 | 31 | /** \class AliHLTDDLRawReader |
240d63be | 32 | <pre> |
33 | //_____________________________________________________________ | |
4aa41877 | 34 | // AliHLTDDLRawReader (taken from the offline AliROOT code, |
240d63be | 35 | // original authors: D.Favretto and A.K.Mohanty) |
36 | // | |
37 | // This is the base class for reading ddl raw data | |
38 | // and providing information about digits | |
39 | </pre> | |
40 | */ | |
41 | ||
4aa41877 | 42 | ClassImp(AliHLTDDLRawReader) |
240d63be | 43 | |
4aa41877 | 44 | AliHLTDDLRawReader::AliHLTDDLRawReader() |
240d63be | 45 | { |
46 | fMiniHeader = NULL; | |
47 | fCount = 0; | |
48 | fSelectDetectorID = -1; | |
49 | fSelectMinDDLID = -1; | |
50 | fSelectMaxDDLID = -1; | |
51 | } | |
52 | ||
4aa41877 | 53 | AliHLTDDLRawReader::~AliHLTDDLRawReader() |
240d63be | 54 | { |
55 | } | |
56 | ||
4aa41877 | 57 | void AliHLTDDLRawReader::Select(Int_t detectorID, Int_t minDDLID, Int_t maxDDLID) |
240d63be | 58 | { |
59 | // read only data of the detector with the given ID and in the given | |
60 | // range of DDLs (minDDLID <= DDLID < maxDDLID). | |
61 | // no selection is applied if a value < 0 is used. | |
62 | ||
63 | fSelectDetectorID = detectorID; | |
64 | fSelectMinDDLID = minDDLID; | |
65 | fSelectMaxDDLID = maxDDLID; | |
66 | } | |
67 | ||
4aa41877 | 68 | Bool_t AliHLTDDLRawReader::IsSelected() const |
240d63be | 69 | { |
70 | // apply the selection (if any) | |
71 | ||
72 | if (fSelectDetectorID >= 0) { | |
73 | if (fMiniHeader->fDetectorID != fSelectDetectorID) return kFALSE; | |
74 | if ((fSelectMinDDLID >= 0) && (fMiniHeader->fDDLID < fSelectMinDDLID)) | |
75 | return kFALSE; | |
76 | if ((fSelectMaxDDLID >= 0) && (fMiniHeader->fDDLID >= fSelectMaxDDLID)) | |
77 | return kFALSE; | |
78 | } | |
79 | return kTRUE; | |
80 | } | |
81 | ||
4aa41877 | 82 | Bool_t AliHLTDDLRawReader::CheckMiniHeader() const |
240d63be | 83 | { |
84 | // check the magic number of the mini header | |
85 | ||
86 | if ((fMiniHeader->fMagicWord[2] != 0x12) || | |
87 | (fMiniHeader->fMagicWord[1] != 0x34) || | |
88 | (fMiniHeader->fMagicWord[0] != 0x56)) { | |
4aa41877 | 89 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::CheckMiniHeader","MH") |
240d63be | 90 | <<"DDL mini header has wrong magic word!"<<ENDLOG; |
91 | return kFALSE; | |
92 | } | |
93 | return kTRUE; | |
94 | } | |
95 | ||
4aa41877 | 96 | Bool_t AliHLTDDLRawReader::ReadNextInt(UInt_t& data) |
240d63be | 97 | { |
98 | // reads the next 4 bytes at the current position | |
99 | // returns kFALSE if the data could not be read | |
100 | ||
101 | while (fCount == 0) { | |
102 | if (!ReadMiniHeader()) return kFALSE; | |
103 | } | |
104 | if (fCount < (Int_t) sizeof(data)) { | |
4aa41877 | 105 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::ReadNextInt","Data") |
106 | <<AliHLTLog::kDec<<"Too few data left ("<<fCount<<") to read UInt_t!"<<ENDLOG; | |
240d63be | 107 | return kFALSE; |
108 | } | |
109 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
4aa41877 | 110 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::ReadNextInt","Data") |
240d63be | 111 | <<"Could not read data."<<ENDLOG; |
112 | return kFALSE; | |
113 | } | |
114 | return kTRUE; | |
115 | } | |
116 | ||
4aa41877 | 117 | Bool_t AliHLTDDLRawReader::ReadNextShort(UShort_t& data) |
240d63be | 118 | { |
119 | // reads the next 2 bytes at the current position | |
120 | // returns kFALSE if the data could not be read | |
121 | ||
122 | while (fCount == 0) { | |
123 | if (!ReadMiniHeader()) return kFALSE; | |
124 | } | |
125 | if (fCount < (Int_t) sizeof(data)) { | |
4aa41877 | 126 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::ReadNextShort","Data") |
127 | <<AliHLTLog::kDec<<"Too few data left ("<<fCount<<") to read UShort_t!"<<ENDLOG; | |
240d63be | 128 | return kFALSE; |
129 | } | |
130 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
4aa41877 | 131 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::ReadNextShort","Data") |
240d63be | 132 | <<"Could not read data."<<ENDLOG; |
133 | return kFALSE; | |
134 | } | |
135 | return kTRUE; | |
136 | } | |
137 | ||
4aa41877 | 138 | Bool_t AliHLTDDLRawReader::ReadNextChar(UChar_t& data) |
240d63be | 139 | { |
140 | // reads the next 1 byte at the current stream position | |
141 | // returns kFALSE if the data could not be read | |
142 | ||
143 | while (fCount == 0) { | |
144 | if (!ReadMiniHeader()) return kFALSE; | |
145 | } | |
146 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
4aa41877 | 147 | LOG(AliHLTLog::kError,"AliHLTDDLRawReader::ReadNextChar","Data") |
240d63be | 148 | <<"Could not read data."<<ENDLOG; |
149 | return kFALSE; | |
150 | } | |
151 | return kTRUE; | |
152 | } | |
153 |