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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 | /////////////////////////////////////////////////////////////////////////////// | |
17 | // | |
18 | // This is a class for reading a raw data from a date event and providing | |
19 | // information about digits | |
20 | // | |
21 | /////////////////////////////////////////////////////////////////////////////// | |
22 | ||
23 | #include "AliRawReaderDate.h" | |
24 | #ifdef ALI_DATE | |
25 | #include "event.h" | |
26 | #endif | |
27 | ||
28 | ClassImp(AliRawReaderDate) | |
29 | ||
30 | ||
31 | AliRawReaderDate::AliRawReaderDate( | |
32 | #ifdef ALI_DATE | |
33 | void* event | |
34 | #else | |
35 | void* /* event */ | |
36 | #endif | |
37 | ) | |
38 | { | |
39 | // create an object to read digits from the given date event | |
40 | ||
41 | #ifdef ALI_DATE | |
42 | fEvent = (eventHeaderStruct*) event; | |
43 | fSubEvent = NULL; | |
44 | fPosition = fEnd = NULL; | |
45 | #else | |
46 | Fatal("AliRawReaderDate", "this class was compiled without DATE"); | |
47 | #endif | |
48 | } | |
49 | ||
50 | AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) : | |
51 | AliRawReader(rawReader) | |
52 | { | |
53 | // copy constructor | |
54 | ||
55 | fEvent = rawReader.fEvent; | |
56 | fSubEvent = rawReader.fSubEvent; | |
57 | fPosition = rawReader.fPosition; | |
58 | fEnd = rawReader.fEnd; | |
59 | } | |
60 | ||
61 | AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate& | |
62 | rawReader) | |
63 | { | |
64 | // assignment operator | |
65 | ||
66 | this->~AliRawReaderDate(); | |
67 | new(this) AliRawReaderDate(rawReader); | |
68 | return *this; | |
69 | } | |
70 | ||
71 | ||
72 | UInt_t AliRawReaderDate::GetType() const | |
73 | { | |
74 | // get the type from the event header | |
75 | ||
76 | #ifdef ALI_DATE | |
77 | if (!fEvent) return 0; | |
78 | return fEvent->eventType; | |
79 | #else | |
80 | return 0; | |
81 | #endif | |
82 | } | |
83 | ||
84 | UInt_t AliRawReaderDate::GetRunNumber() const | |
85 | { | |
86 | // get the run number from the event header | |
87 | ||
88 | #ifdef ALI_DATE | |
89 | if (!fEvent) return 0; | |
90 | return fEvent->eventRunNb; | |
91 | #else | |
92 | return 0; | |
93 | #endif | |
94 | } | |
95 | ||
96 | const UInt_t* AliRawReaderDate::GetEventId() const | |
97 | { | |
98 | // get the event id from the event header | |
99 | ||
100 | #ifdef ALI_DATE | |
101 | if (!fEvent) return NULL; | |
102 | return fEvent->eventId; | |
103 | #else | |
104 | return NULL; | |
105 | #endif | |
106 | } | |
107 | ||
108 | const UInt_t* AliRawReaderDate::GetTriggerPattern() const | |
109 | { | |
110 | // get the trigger pattern from the event header | |
111 | ||
112 | #ifdef ALI_DATE | |
113 | if (!fEvent) return NULL; | |
114 | return fEvent->eventTriggerPattern; | |
115 | #else | |
116 | return NULL; | |
117 | #endif | |
118 | } | |
119 | ||
120 | const UInt_t* AliRawReaderDate::GetDetectorPattern() const | |
121 | { | |
122 | // get the detector pattern from the event header | |
123 | ||
124 | #ifdef ALI_DATE | |
125 | if (!fEvent) return NULL; | |
126 | return fEvent->eventDetectorPattern; | |
127 | #else | |
128 | return NULL; | |
129 | #endif | |
130 | } | |
131 | ||
132 | const UInt_t* AliRawReaderDate::GetAttributes() const | |
133 | { | |
134 | // get the type attributes from the event header | |
135 | ||
136 | #ifdef ALI_DATE | |
137 | if (!fEvent) return NULL; | |
138 | return fEvent->eventTypeAttribute; | |
139 | #else | |
140 | return NULL; | |
141 | #endif | |
142 | } | |
143 | ||
144 | UInt_t AliRawReaderDate::GetGDCId() const | |
145 | { | |
146 | // get the GDC Id from the event header | |
147 | ||
148 | #ifdef ALI_DATE | |
149 | if (!fEvent) return 0; | |
150 | return fEvent->eventGdcId; | |
151 | #else | |
152 | return 0; | |
153 | #endif | |
154 | } | |
155 | ||
156 | ||
157 | Bool_t AliRawReaderDate::ReadMiniHeader() | |
158 | { | |
159 | // read a mini header at the current position | |
160 | // returns kFALSE if the mini header could not be read | |
161 | ||
162 | #ifdef ALI_DATE | |
163 | if (!fEvent) return kFALSE; | |
164 | do { | |
165 | if (fCount > 0) fPosition += fCount; // skip payload if event was not selected | |
166 | if (!fSubEvent || (fPosition >= fEnd)) { // new sub event | |
167 | if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE; // end of data | |
168 | if (fSubEvent) { | |
169 | fSubEvent = (eventHeaderStruct*) (((UChar_t*)fSubEvent) + | |
170 | fSubEvent->eventSize); | |
171 | } else { | |
172 | if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE; // no sub events | |
173 | fSubEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) + | |
174 | fEvent->eventHeadSize); | |
175 | } | |
176 | fCount = 0; | |
177 | fPosition = ((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize + | |
178 | sizeof(equipmentHeaderStruct); | |
179 | fEnd = ((UChar_t*)fSubEvent) + fSubEvent->eventSize; | |
180 | } | |
181 | if (fPosition >= fEnd) continue; // no data left in the payload | |
182 | if (fPosition + sizeof(AliMiniHeader) > fEnd) { | |
183 | Error("ReadMiniHeader", "could not read data!"); | |
184 | return kFALSE; | |
185 | } | |
186 | fMiniHeader = (AliMiniHeader*) fPosition; | |
187 | fPosition += sizeof(AliMiniHeader); | |
188 | CheckMiniHeader(); | |
189 | fCount = fMiniHeader->fSize; | |
190 | if (fPosition + fCount > fEnd) { // check data size in mini header and sub event | |
191 | Error("ReadMiniHeader", "size in mini header exceeds event size!"); | |
192 | fMiniHeader->fSize = fCount = fEnd - fPosition; | |
193 | } | |
194 | } while (!IsSelected()); | |
195 | return kTRUE; | |
196 | #else | |
197 | return kFALSE; | |
198 | #endif | |
199 | } | |
200 | ||
201 | Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data) | |
202 | { | |
203 | // reads the next payload at the current position | |
204 | // returns kFALSE if the data could not be read | |
205 | ||
206 | while (fCount == 0) { | |
207 | if (!ReadMiniHeader()) return kFALSE; | |
208 | } | |
209 | data = fPosition; | |
210 | fPosition += fCount; | |
211 | fCount = 0; | |
212 | return kTRUE; | |
213 | } | |
214 | ||
215 | Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size) | |
216 | { | |
217 | // reads the next block of data at the current position | |
218 | // returns kFALSE if the data could not be read | |
219 | ||
220 | if (fPosition + size > fEnd) { | |
221 | Error("ReadNext", "could not read data!"); | |
222 | return kFALSE; | |
223 | } | |
224 | memcpy(data, fPosition, size); | |
225 | fPosition += size; | |
226 | fCount -= size; | |
227 | return kTRUE; | |
228 | } | |
229 | ||
230 | ||
231 | Bool_t AliRawReaderDate::Reset() | |
232 | { | |
233 | // reset the current position to the beginning of the event | |
234 | ||
235 | #ifdef ALI_DATE | |
236 | fSubEvent = NULL; | |
237 | #endif | |
238 | fCount = 0; | |
239 | fPosition = fEnd = NULL; | |
240 | return kTRUE; | |
241 | } |