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29a569c4 | 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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | /// | |
20 | /// This is a class for reading raw data from a date file or event (version 3). | |
21 | /// | |
22 | /// The AliRawReaderDateV3 is constructed either with a pointer to a | |
23 | /// date event or with a file name and an event number. | |
24 | /// | |
25 | /////////////////////////////////////////////////////////////////////////////// | |
26 | ||
27 | #include "AliRawReaderDateV3.h" | |
28 | ||
29 | struct eventHeaderStruct { | |
30 | Int_t size; /* size of event in Bytes */ | |
31 | UInt_t magic; /* magic number used for consistency check */ | |
32 | UInt_t type; /* event type */ | |
33 | UInt_t headLen; /* size of header in bytes */ | |
34 | UInt_t runNb; /* run number */ | |
35 | UInt_t burstNb; /* burst number */ | |
36 | UInt_t nbInRun; /* event number in run */ | |
37 | UInt_t nbInBurst; /* event number in burst */ | |
38 | UInt_t triggerNb; /* trigger number for this detector */ | |
39 | UInt_t fileSeqNb; /* file sequence number for multifiles run */ | |
40 | UInt_t detectorId[3]; /* detector identification */ | |
41 | UInt_t time; /* time in seconds since 0.00 GMT 1.1.1970 */ | |
42 | UInt_t usec; /* microseconds */ | |
43 | UInt_t errorCode; | |
44 | UInt_t deadTime; | |
45 | UInt_t deadTimeusec; | |
46 | UInt_t typeAttribute[2]; /* event type id mask */ | |
47 | }; | |
48 | ||
49 | #define EVENT_MAGIC_NUMBER ((UInt_t)0xDA1E5AFE) | |
50 | ||
51 | ||
52 | ClassImp(AliRawReaderDateV3) | |
53 | ||
54 | ||
55 | AliRawReaderDateV3::AliRawReaderDateV3(void* event) : | |
29a569c4 | 56 | fFile(NULL), |
57 | fEvent(NULL), | |
58 | fSubEvent(NULL), | |
59 | fPosition(NULL), | |
60 | fEnd(NULL) | |
61 | { | |
62 | // create an object to read digits from the given date event | |
63 | ||
64 | fEvent = (eventHeaderStruct*) event; | |
65 | } | |
66 | ||
67 | AliRawReaderDateV3::AliRawReaderDateV3(const char* fileName, | |
68 | Int_t eventNumber) : | |
29a569c4 | 69 | fFile(NULL), |
70 | fEvent(NULL), | |
71 | fSubEvent(NULL), | |
72 | fPosition(NULL), | |
73 | fEnd(NULL) | |
74 | { | |
75 | // create an object to read digits from the given date event | |
76 | ||
77 | fFile = fopen(fileName, "rb"); | |
78 | if (!fFile) { | |
79 | Error("AliRawReaderDateV3", "could not open file %s", fileName); | |
80 | return; | |
81 | } | |
82 | if (eventNumber < 0) return; | |
83 | ||
84 | eventHeaderStruct header; | |
85 | UInt_t headerSize = sizeof(eventHeaderStruct); | |
86 | while (fread(&header, 1, headerSize, fFile) == headerSize) { | |
87 | if (eventNumber == 0) { | |
88 | UChar_t* buffer = new UChar_t[header.size]; | |
89 | fseek(fFile, -headerSize, SEEK_CUR); | |
90 | if (Int_t(fread(buffer, 1, header.size, fFile)) != header.size) break; | |
91 | fEvent = (eventHeaderStruct*) buffer; | |
92 | break; | |
93 | } | |
94 | fseek(fFile, header.size-headerSize, SEEK_CUR); | |
95 | eventNumber--; | |
96 | } | |
97 | } | |
98 | ||
99 | AliRawReaderDateV3::AliRawReaderDateV3(const AliRawReaderDateV3& rawReader) : | |
100 | AliRawReader(rawReader), | |
29a569c4 | 101 | fFile(rawReader.fFile), |
102 | fEvent(rawReader.fEvent), | |
103 | fSubEvent(rawReader.fSubEvent), | |
104 | fPosition(rawReader.fPosition), | |
105 | fEnd(rawReader.fEnd) | |
106 | ||
107 | { | |
108 | // copy constructor | |
109 | ||
110 | Fatal("AliRawReaderDateV3", "copy constructor not implemented"); | |
111 | } | |
112 | ||
113 | AliRawReaderDateV3& AliRawReaderDateV3::operator = (const AliRawReaderDateV3& | |
114 | /*rawReader*/) | |
115 | { | |
116 | // assignment operator | |
117 | ||
118 | Fatal("operator =", "assignment operator not implemented"); | |
119 | return *this; | |
120 | } | |
121 | ||
122 | AliRawReaderDateV3::~AliRawReaderDateV3() | |
123 | { | |
124 | // destructor | |
125 | ||
126 | if (fFile) { | |
127 | delete[] fEvent; | |
128 | fclose(fFile); | |
129 | } | |
130 | } | |
131 | ||
132 | ||
133 | UInt_t AliRawReaderDateV3::GetType() const | |
134 | { | |
135 | // get the type from the event header | |
136 | ||
137 | if (!fEvent) return 0; | |
138 | return fEvent->type; | |
139 | } | |
140 | ||
141 | UInt_t AliRawReaderDateV3::GetRunNumber() const | |
142 | { | |
143 | // get the run number from the event header | |
144 | ||
145 | if (!fEvent) return 0; | |
146 | return fEvent->runNb; | |
147 | } | |
148 | ||
149 | const UInt_t* AliRawReaderDateV3::GetEventId() const | |
150 | { | |
151 | // get the event id from the event header | |
152 | ||
153 | if (!fEvent) return NULL; | |
154 | return &(fEvent->nbInRun); | |
155 | } | |
156 | ||
157 | const UInt_t* AliRawReaderDateV3::GetTriggerPattern() const | |
158 | { | |
159 | // get the trigger pattern from the event header | |
160 | ||
161 | return NULL; | |
162 | } | |
163 | ||
164 | const UInt_t* AliRawReaderDateV3::GetDetectorPattern() const | |
165 | { | |
166 | // get the detector pattern from the event header | |
167 | ||
168 | if (!fEvent) return NULL; | |
169 | return fEvent->detectorId; | |
170 | } | |
171 | ||
172 | const UInt_t* AliRawReaderDateV3::GetAttributes() const | |
173 | { | |
174 | // get the type attributes from the event header | |
175 | ||
176 | if (!fEvent) return NULL; | |
177 | return fEvent->typeAttribute; | |
178 | } | |
179 | ||
180 | const UInt_t* AliRawReaderDateV3::GetSubEventAttributes() const | |
181 | { | |
182 | // get the type attributes from the sub event header | |
183 | ||
184 | if (!fSubEvent) return NULL; | |
185 | return fSubEvent->typeAttribute; | |
186 | } | |
187 | ||
188 | UInt_t AliRawReaderDateV3::GetLDCId() const | |
189 | { | |
190 | // get the LDC Id from the event header | |
191 | ||
192 | return UInt_t(-1); | |
193 | } | |
194 | ||
195 | UInt_t AliRawReaderDateV3::GetGDCId() const | |
196 | { | |
197 | // get the GDC Id from the event header | |
198 | ||
199 | return UInt_t(-1); | |
200 | } | |
201 | ||
202 | ||
203 | Int_t AliRawReaderDateV3::GetEquipmentSize() const | |
204 | { | |
205 | // get the size of the equipment | |
206 | ||
207 | if (!fSubEvent) return 0; | |
208 | return fSubEvent->size; | |
209 | } | |
210 | ||
211 | Int_t AliRawReaderDateV3::GetEquipmentType() const | |
212 | { | |
213 | // get the type from the equipment header | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | Int_t AliRawReaderDateV3::GetEquipmentId() const | |
219 | { | |
220 | // get the ID from the equipment header | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | const UInt_t* AliRawReaderDateV3::GetEquipmentAttributes() const | |
226 | { | |
227 | // get the attributes from the equipment header | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | Int_t AliRawReaderDateV3::GetEquipmentElementSize() const | |
233 | { | |
234 | // get the basic element size from the equipment header | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | ||
240 | Bool_t AliRawReaderDateV3::ReadHeader() | |
241 | { | |
242 | // read a data header at the current position | |
243 | // returns kFALSE if the data header could not be read | |
244 | ||
245 | fErrorCode = 0; | |
246 | ||
247 | fHeader = NULL; | |
248 | if (!fEvent) return kFALSE; | |
249 | // check whether there are sub events | |
250 | if (fEvent->size <= Int_t(fEvent->headLen)) return kFALSE; | |
251 | ||
252 | do { | |
253 | // skip payload (if event was not selected) | |
254 | if (fCount > 0) fPosition += fCount; | |
255 | ||
256 | // check for end of event data | |
257 | if (fPosition >= ((UChar_t*)fEvent)+fEvent->size) return kFALSE; | |
2512bc59 | 258 | if ((fEvent->detectorId[2] & 0x8000) != 0x8000) { |
29a569c4 | 259 | fSubEvent = fEvent; // no super event |
260 | } else if (fSubEvent) { | |
261 | fSubEvent = (eventHeaderStruct*) (((UChar_t*)fSubEvent) + | |
262 | fSubEvent->size); | |
263 | } else { | |
264 | fSubEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) + | |
265 | fEvent->headLen); | |
266 | } | |
267 | ||
268 | // check the magic word of the sub event | |
269 | if (fSubEvent->magic != EVENT_MAGIC_NUMBER) { | |
270 | Error("ReadHeader", "wrong magic number in sub event!\n" | |
271 | " run: %d event: %d\n", | |
272 | fSubEvent->runNb, fSubEvent->nbInRun); | |
273 | fErrorCode = kErrMagic; | |
274 | return kFALSE; | |
275 | } | |
276 | ||
277 | // continue if no data in the subevent | |
278 | if (fSubEvent->size == Int_t(fSubEvent->headLen)) { | |
279 | fPosition = fEnd = ((UChar_t*)fSubEvent) + fSubEvent->size; | |
280 | fCount = 0; | |
281 | continue; | |
282 | } | |
283 | ||
284 | fCount = 0; | |
285 | fPosition = ((UChar_t*)fSubEvent) + sizeof(eventHeaderStruct); | |
286 | fEnd = ((UChar_t*)fSubEvent) + fSubEvent->size; | |
287 | ||
288 | // continue with the next sub event if no data left in the payload | |
289 | if (fPosition >= fEnd) continue; | |
290 | ||
291 | if (fRequireHeader) { | |
292 | // check that there are enough bytes left for the data header | |
293 | if (fPosition + sizeof(AliRawDataHeader) > fEnd) { | |
294 | Error("ReadHeader", "could not read data header data!"); | |
295 | Warning("ReadHeader", "skipping %d bytes\n" | |
296 | " run: %d event: %d\n", | |
297 | fEnd - fPosition, fSubEvent->runNb, fSubEvent->nbInRun); | |
298 | fCount = 0; | |
299 | fPosition = fEnd; | |
300 | fErrorCode = kErrNoDataHeader; | |
301 | continue; | |
302 | } | |
303 | ||
304 | // "read" the data header | |
305 | fHeader = (AliRawDataHeader*) fPosition; | |
306 | fPosition += sizeof(AliRawDataHeader); | |
307 | } | |
308 | ||
309 | if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) { | |
310 | fCount = fHeader->fSize - sizeof(AliRawDataHeader); | |
311 | ||
312 | // check consistency of data size in the header and in the sub event | |
313 | if (fPosition + fCount > fEnd) { | |
314 | Error("ReadHeader", "size in data header exceeds event size!"); | |
315 | Warning("ReadHeader", "skipping %d bytes\n" | |
316 | " run: %d event: %d\n", | |
317 | fEnd - fPosition, fSubEvent->runNb, fSubEvent->nbInRun); | |
318 | fCount = 0; | |
319 | fPosition = fEnd; | |
320 | fErrorCode = kErrSize; | |
321 | continue; | |
322 | } | |
323 | ||
324 | } else { | |
325 | fCount = fEnd - fPosition; | |
326 | } | |
327 | ||
328 | } while (!IsSelected()); | |
329 | ||
330 | return kTRUE; | |
331 | } | |
332 | ||
333 | Bool_t AliRawReaderDateV3::ReadNextData(UChar_t*& data) | |
334 | { | |
335 | // reads the next payload at the current position | |
336 | // returns kFALSE if the data could not be read | |
337 | ||
338 | fErrorCode = 0; | |
339 | while (fCount == 0) { | |
340 | if (!ReadHeader()) return kFALSE; | |
341 | } | |
342 | data = fPosition; | |
343 | fPosition += fCount; | |
344 | fCount = 0; | |
345 | return kTRUE; | |
346 | } | |
347 | ||
348 | Bool_t AliRawReaderDateV3::ReadNext(UChar_t* data, Int_t size) | |
349 | { | |
350 | // reads the next block of data at the current position | |
351 | // returns kFALSE if the data could not be read | |
352 | ||
353 | fErrorCode = 0; | |
354 | if (fPosition + size > fEnd) { | |
355 | Error("ReadNext", "could not read data!"); | |
356 | fErrorCode = kErrOutOfBounds; | |
357 | return kFALSE; | |
358 | } | |
359 | memcpy(data, fPosition, size); | |
360 | fPosition += size; | |
361 | fCount -= size; | |
362 | return kTRUE; | |
363 | } | |
364 | ||
365 | ||
366 | Bool_t AliRawReaderDateV3::Reset() | |
367 | { | |
368 | // reset the current position to the beginning of the event | |
369 | ||
370 | fSubEvent = NULL; | |
371 | fCount = 0; | |
372 | fPosition = fEnd = NULL; | |
373 | return kTRUE; | |
374 | } | |
375 | ||
376 | ||
377 | Bool_t AliRawReaderDateV3::NextEvent() | |
378 | { | |
379 | // go to the next event in the date file | |
380 | ||
381 | if (!fFile) return kFALSE; | |
382 | ||
383 | Reset(); | |
384 | eventHeaderStruct header; | |
385 | UInt_t headerSize = sizeof(eventHeaderStruct); | |
386 | if (fEvent) delete[] fEvent; | |
387 | fEvent = &header; | |
388 | ||
389 | while (fread(&header, 1, headerSize, fFile) == headerSize) { | |
390 | if (!IsEventSelected()) { | |
391 | fseek(fFile, header.size-headerSize, SEEK_CUR); | |
392 | continue; | |
393 | } | |
394 | UChar_t* buffer = new UChar_t[header.size]; | |
395 | fseek(fFile, -headerSize, SEEK_CUR); | |
396 | if (Int_t(fread(buffer, 1, header.size, fFile)) != header.size) { | |
397 | Error("NextEvent", "could not read event from file"); | |
398 | delete[] buffer; | |
399 | break; | |
400 | } | |
401 | fEvent = (eventHeaderStruct*) buffer; | |
402 | return kTRUE; | |
403 | }; | |
404 | ||
405 | fEvent = NULL; | |
406 | return kFALSE; | |
407 | } | |
408 | ||
409 | Bool_t AliRawReaderDateV3::RewindEvents() | |
410 | { | |
411 | // go back to the beginning of the date file | |
412 | ||
413 | if (!fFile) return kFALSE; | |
414 | ||
415 | fseek(fFile, 0, SEEK_SET); | |
416 | return Reset(); | |
417 | } | |
418 | ||
419 | ||
420 | Int_t AliRawReaderDateV3::CheckData() const | |
421 | { | |
422 | // check the consistency of the data | |
423 | ||
424 | if (!fEvent) return 0; | |
425 | // check whether there are sub events | |
426 | if (fEvent->size <= Int_t(fEvent->headLen)) return 0; | |
427 | ||
428 | eventHeaderStruct* subEvent = NULL; | |
429 | UChar_t* position = 0; | |
430 | UChar_t* end = 0; | |
431 | Int_t result = 0; | |
432 | ||
433 | while (kTRUE) { | |
434 | // check for end of event data | |
435 | if (position >= ((UChar_t*)fEvent)+fEvent->size) return result; | |
2512bc59 | 436 | if ((fEvent->detectorId[2] & 0x8000) != 0x8000) { |
29a569c4 | 437 | subEvent = fEvent; // no super event |
438 | } else if (subEvent) { | |
439 | subEvent = (eventHeaderStruct*) (((UChar_t*)subEvent) + | |
440 | subEvent->size); | |
441 | } else { | |
442 | subEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) + | |
443 | fEvent->headLen); | |
444 | } | |
445 | ||
446 | // check the magic word of the sub event | |
447 | if (subEvent->magic != EVENT_MAGIC_NUMBER) { | |
448 | result |= kErrMagic; | |
449 | return result; | |
450 | } | |
451 | ||
452 | position = ((UChar_t*)subEvent) + subEvent->headLen; | |
453 | end = ((UChar_t*)subEvent) + subEvent->size; | |
454 | ||
455 | // continue with the next sub event if no data left in the payload | |
456 | if (position >= end) continue; | |
457 | ||
458 | if (fRequireHeader) { | |
459 | // check that there are enough bytes left for the data header | |
460 | if (position + sizeof(AliRawDataHeader) > end) { | |
461 | result |= kErrNoDataHeader; | |
462 | position = end; | |
463 | continue; | |
464 | } | |
465 | ||
466 | // check consistency of data size in the data header and in the sub event | |
467 | AliRawDataHeader* header = (AliRawDataHeader*) position; | |
468 | if (header->fSize != 0xFFFFFFFF) { | |
469 | if (position + header->fSize > end) result |= kErrSize; | |
470 | } | |
471 | } | |
472 | position = end; | |
473 | }; | |
474 | ||
475 | return 0; | |
476 | } |