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[u/mrichter/AliRoot.git] / RAW / AliRawReaderDate.cxx
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16048fcf 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
28ClassImp(AliRawReaderDate)
29
30
31AliRawReaderDate::AliRawReaderDate(
32#ifdef ALI_DATE
33 void* event
34#else
35 void* /* event */
36#endif
c946ab02 37 ) :
39f9963f 38 fRequireHeader(kTRUE),
c946ab02 39 fEvent(NULL),
40 fSubEvent(NULL),
41 fEquipment(NULL),
42 fIsOwner(kFALSE),
43 fPosition(NULL),
44 fEnd(NULL)
16048fcf 45{
46// create an object to read digits from the given date event
47
48#ifdef ALI_DATE
49 fEvent = (eventHeaderStruct*) event;
c946ab02 50#else
51 Fatal("AliRawReaderDate", "this class was compiled without DATE");
52#endif
53}
54
55AliRawReaderDate::AliRawReaderDate(
56#ifdef ALI_DATE
57 const char* fileName, Int_t eventNumber
58#else
59 const char* /*fileName*/,
60 Int_t /*eventNumber*/
61#endif
62 ) :
39f9963f 63 fRequireHeader(kTRUE),
c946ab02 64 fEvent(NULL),
65 fSubEvent(NULL),
66 fEquipment(NULL),
67 fIsOwner(kFALSE),
68 fPosition(NULL),
69 fEnd(NULL)
70{
71// create an object to read digits from the given date event
72
73#ifdef ALI_DATE
74 FILE* file = fopen(fileName, "rb");
75 if (!file) {
76 Error("AliRawReaderDate", "could not open file %s", fileName);
77 return;
78 }
79 eventHeaderStruct header;
80 UInt_t headerSize = sizeof(eventHeaderStruct);
81 while (fread(&header, 1, headerSize, file) == headerSize) {
82 if (eventNumber == 0) {
83 UChar_t* buffer = new UChar_t[header.eventSize];
84 fseek(file, -headerSize, SEEK_CUR);
85 if (fread(buffer, 1, header.eventSize, file) != header.eventSize) break;
86 fEvent = (eventHeaderStruct*) buffer;
87 fIsOwner = kTRUE;
88 break;
89 }
90 fseek(file, header.eventSize-headerSize, SEEK_CUR);
91 eventNumber--;
92 }
93 fclose(file);
94
16048fcf 95#else
96 Fatal("AliRawReaderDate", "this class was compiled without DATE");
97#endif
98}
99
100AliRawReaderDate::AliRawReaderDate(const AliRawReaderDate& rawReader) :
c946ab02 101 AliRawReader(rawReader),
39f9963f 102 fRequireHeader(rawReader.fRequireHeader),
c946ab02 103 fEvent(rawReader.fEvent),
104 fSubEvent(rawReader.fSubEvent),
105 fEquipment(rawReader.fEquipment),
106 fIsOwner(kFALSE),
107 fPosition(rawReader.fPosition),
108 fEnd(rawReader.fEnd)
109
16048fcf 110{
111// copy constructor
112
16048fcf 113}
114
115AliRawReaderDate& AliRawReaderDate::operator = (const AliRawReaderDate&
116 rawReader)
117{
118// assignment operator
119
120 this->~AliRawReaderDate();
121 new(this) AliRawReaderDate(rawReader);
122 return *this;
123}
124
c946ab02 125AliRawReaderDate::~AliRawReaderDate()
126{
127// destructor
128
129#ifdef ALI_DATE
130 if (fIsOwner) delete[] fEvent;
131#endif
132}
133
16048fcf 134
135UInt_t AliRawReaderDate::GetType() const
136{
137// get the type from the event header
138
139#ifdef ALI_DATE
140 if (!fEvent) return 0;
141 return fEvent->eventType;
142#else
143 return 0;
144#endif
145}
146
147UInt_t AliRawReaderDate::GetRunNumber() const
148{
149// get the run number from the event header
150
151#ifdef ALI_DATE
152 if (!fEvent) return 0;
153 return fEvent->eventRunNb;
154#else
155 return 0;
156#endif
157}
158
159const UInt_t* AliRawReaderDate::GetEventId() const
160{
161// get the event id from the event header
162
163#ifdef ALI_DATE
164 if (!fEvent) return NULL;
165 return fEvent->eventId;
166#else
167 return NULL;
168#endif
169}
170
171const UInt_t* AliRawReaderDate::GetTriggerPattern() const
172{
173// get the trigger pattern from the event header
174
175#ifdef ALI_DATE
176 if (!fEvent) return NULL;
177 return fEvent->eventTriggerPattern;
178#else
179 return NULL;
180#endif
181}
182
183const UInt_t* AliRawReaderDate::GetDetectorPattern() const
184{
185// get the detector pattern from the event header
186
187#ifdef ALI_DATE
188 if (!fEvent) return NULL;
189 return fEvent->eventDetectorPattern;
190#else
191 return NULL;
192#endif
193}
194
195const UInt_t* AliRawReaderDate::GetAttributes() const
196{
197// get the type attributes from the event header
198
199#ifdef ALI_DATE
200 if (!fEvent) return NULL;
201 return fEvent->eventTypeAttribute;
202#else
203 return NULL;
204#endif
205}
206
c946ab02 207UInt_t AliRawReaderDate::GetLDCId() const
208{
209// get the LDC Id from the event header
210
211#ifdef ALI_DATE
212 if (!fSubEvent) return 0;
213 return fSubEvent->eventLdcId;
214#else
215 return 0;
216#endif
217}
218
16048fcf 219UInt_t AliRawReaderDate::GetGDCId() const
220{
221// get the GDC Id from the event header
222
223#ifdef ALI_DATE
224 if (!fEvent) return 0;
225 return fEvent->eventGdcId;
226#else
227 return 0;
228#endif
229}
230
231
c946ab02 232Int_t AliRawReaderDate::GetEquipmentSize() const
233{
234// get the size of the equipment
235
236#ifdef ALI_DATE
237 if (!fEquipment) return 0;
238 return fEquipment->equipmentSize;
239#else
240 return 0;
241#endif
242}
243
244Int_t AliRawReaderDate::GetEquipmentType() const
245{
246// get the type from the equipment header
247
248#ifdef ALI_DATE
249 if (!fEquipment) return -1;
250 return fEquipment->equipmentType;
251#else
252 return 0;
253#endif
254}
255
256Int_t AliRawReaderDate::GetEquipmentId() const
257{
258// get the ID from the equipment header
259
260#ifdef ALI_DATE
261 if (!fEquipment) return -1;
262 return fEquipment->equipmentId;
263#else
264 return 0;
265#endif
266}
267
268const UInt_t* AliRawReaderDate::GetEquipmentAttributes() const
269{
270// get the attributes from the equipment header
271
272#ifdef ALI_DATE
273 if (!fEquipment) return NULL;
274 return fEquipment->equipmentTypeAttribute;
275#else
276 return 0;
277#endif
278}
279
280Int_t AliRawReaderDate::GetEquipmentElementSize() const
281{
282// get the basic element size from the equipment header
283
284#ifdef ALI_DATE
285 if (!fEquipment) return 0;
286 return fEquipment->equipmentBasicElementSize;
287#else
288 return 0;
289#endif
290}
291
292
293Bool_t AliRawReaderDate::ReadHeader()
16048fcf 294{
39f9963f 295// read a data header at the current position
296// returns kFALSE if the data header could not be read
16048fcf 297
b4857df7 298 fErrorCode = 0;
299
16048fcf 300#ifdef ALI_DATE
301 if (!fEvent) return kFALSE;
b4857df7 302 // check whether there are sub events
303 if (fEvent->eventSize <= fEvent->eventHeadSize) return kFALSE;
304
16048fcf 305 do {
b4857df7 306 // skip payload (if event was not selected)
307 if (fCount > 0) fPosition += fCount;
308
c946ab02 309 // get the first or the next equipment if at the end of an equipment
310 if (!fEquipment || (fPosition >= fEnd)) {
311
312 // get the first or the next sub event if at the end of a sub event
313 if (!fSubEvent ||
314 (fPosition >= ((UChar_t*)fSubEvent) + fSubEvent->eventSize)) {
315
316 // check for end of event data
317 if (fPosition >= ((UChar_t*)fEvent)+fEvent->eventSize) return kFALSE;
318 if (fSubEvent) {
319 fSubEvent = (eventHeaderStruct*) (((UChar_t*)fSubEvent) +
320 fSubEvent->eventSize);
321 } else {
322 fSubEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) +
323 fEvent->eventHeadSize);
324 }
325
326 // check the magic word of the sub event
327 if (fSubEvent->eventMagic != EVENT_MAGIC_NUMBER) {
328 Error("ReadHeader", "wrong magic number in sub event!\n"
329 " run: %d event: %d %d LDC: %d GDC: %d\n",
330 fSubEvent->eventRunNb,
331 fSubEvent->eventId[0], fSubEvent->eventId[1],
332 fSubEvent->eventLdcId, fSubEvent->eventGdcId);
333 fErrorCode = kErrMagic;
334 return kFALSE;
335 }
336
337 fEquipment = (equipmentHeaderStruct*)
338 (((UChar_t*)fSubEvent) + fSubEvent->eventHeadSize);
b4857df7 339
16048fcf 340 } else {
c946ab02 341 fEquipment = (equipmentHeaderStruct*) fEnd;
b4857df7 342 }
343
16048fcf 344 fCount = 0;
c946ab02 345 fPosition = ((UChar_t*)fEquipment) + sizeof(equipmentHeaderStruct);
346 fEnd = fPosition + fEquipment->equipmentSize;
16048fcf 347 }
b4857df7 348
349 // continue with the next sub event if no data left in the payload
350 if (fPosition >= fEnd) continue;
351
39f9963f 352 fHeader = NULL;
353 if (fRequireHeader) {
354 // check that there are enough bytes left for the data header
355 if (fPosition + sizeof(AliRawDataHeader) > fEnd) {
356 Error("ReadHeader", "could not read data header data!");
c946ab02 357 Warning("ReadHeader", "skipping %d bytes\n"
358 " run: %d event: %d %d LDC: %d GDC: %d\n",
359 fEnd - fPosition, fSubEvent->eventRunNb,
360 fSubEvent->eventId[0], fSubEvent->eventId[1],
361 fSubEvent->eventLdcId, fSubEvent->eventGdcId);
362 fCount = 0;
363 fPosition = fEnd;
39f9963f 364 fErrorCode = kErrNoDataHeader;
c946ab02 365 continue;
366 }
b4857df7 367
39f9963f 368 // "read" the data header
369 fHeader = (AliRawDataHeader*) fPosition;
370 fPosition += sizeof(AliRawDataHeader);
72dd1d4f 371 }
c946ab02 372
39f9963f 373 if (fHeader && (fHeader->fSize != 0xFFFFFFFF)) {
374 fCount = fHeader->fSize - sizeof(AliRawDataHeader);
c946ab02 375
39f9963f 376 // check consistency of data size in the header and in the sub event
c946ab02 377 if (fPosition + fCount > fEnd) {
39f9963f 378 Error("ReadHeader", "size in data header exceeds event size!");
c946ab02 379 Warning("ReadHeader", "skipping %d bytes\n"
380 " run: %d event: %d %d LDC: %d GDC: %d\n",
381 fEnd - fPosition, fSubEvent->eventRunNb,
382 fSubEvent->eventId[0], fSubEvent->eventId[1],
383 fSubEvent->eventLdcId, fSubEvent->eventGdcId);
384 fCount = 0;
385 fPosition = fEnd;
386 fErrorCode = kErrSize;
387 continue;
388 }
389
390 } else {
391 fCount = fEnd - fPosition;
16048fcf 392 }
b4857df7 393
16048fcf 394 } while (!IsSelected());
b4857df7 395
16048fcf 396 return kTRUE;
397#else
398 return kFALSE;
399#endif
400}
401
402Bool_t AliRawReaderDate::ReadNextData(UChar_t*& data)
403{
404// reads the next payload at the current position
405// returns kFALSE if the data could not be read
406
b4857df7 407 fErrorCode = 0;
16048fcf 408 while (fCount == 0) {
c946ab02 409 if (!ReadHeader()) return kFALSE;
16048fcf 410 }
411 data = fPosition;
412 fPosition += fCount;
413 fCount = 0;
414 return kTRUE;
415}
416
417Bool_t AliRawReaderDate::ReadNext(UChar_t* data, Int_t size)
418{
419// reads the next block of data at the current position
420// returns kFALSE if the data could not be read
421
b4857df7 422 fErrorCode = 0;
16048fcf 423 if (fPosition + size > fEnd) {
424 Error("ReadNext", "could not read data!");
b4857df7 425 fErrorCode = kErrOutOfBounds;
16048fcf 426 return kFALSE;
427 }
428 memcpy(data, fPosition, size);
429 fPosition += size;
430 fCount -= size;
431 return kTRUE;
432}
433
434
435Bool_t AliRawReaderDate::Reset()
436{
437// reset the current position to the beginning of the event
438
439#ifdef ALI_DATE
440 fSubEvent = NULL;
441#endif
442 fCount = 0;
443 fPosition = fEnd = NULL;
444 return kTRUE;
445}
b4857df7 446
447
448Int_t AliRawReaderDate::CheckData() const
449{
450// check the consistency of the data
451
452#ifdef ALI_DATE
453 if (!fEvent) return 0;
454 // check whether there are sub events
455 if (fEvent->eventSize <= fEvent->eventHeadSize) return 0;
456
457 eventHeaderStruct* subEvent = NULL;
458 UChar_t* position = 0;
459 UChar_t* end = 0;
be50fca2 460 Int_t result = 0;
b4857df7 461
462 while (kTRUE) {
463 // get the first or the next sub event if at the end of a sub event
464 if (!subEvent || (position >= end)) {
465
466 // check for end of event data
be50fca2 467 if (position >= ((UChar_t*)fEvent)+fEvent->eventSize) return result;
b4857df7 468 if (subEvent) {
469 subEvent = (eventHeaderStruct*) (((UChar_t*)subEvent) +
470 subEvent->eventSize);
471 } else {
472 subEvent = (eventHeaderStruct*) (((UChar_t*)fEvent) +
473 fEvent->eventHeadSize);
474 }
475
476 // check the magic word of the sub event
be50fca2 477 if (subEvent->eventMagic != EVENT_MAGIC_NUMBER) {
478 result |= kErrMagic;
479 return result;
480 }
b4857df7 481
482 position = ((UChar_t*)subEvent) + subEvent->eventHeadSize +
483 sizeof(equipmentHeaderStruct);
484 end = ((UChar_t*)subEvent) + subEvent->eventSize;
485 }
486
487 // continue with the next sub event if no data left in the payload
488 if (position >= end) continue;
489
39f9963f 490 // check that there are enough bytes left for the data header
491 if (position + sizeof(AliRawDataHeader) > end) {
492 result |= kErrNoDataHeader;
be50fca2 493 position = end;
494 continue;
495 }
b4857df7 496
39f9963f 497 // check consistency of data size in the data header and in the sub event
498 AliRawDataHeader* header = (AliRawDataHeader*) position;
499 if (fHeader->fSize != 0xFFFFFFFF) {
500 if (position + header->fSize > end) {
501 result |= kErrSize;
502 position = end;
503 } else {
504 position += header->fSize;
505 }
506 } else {
be50fca2 507 position = end;
be50fca2 508 }
b4857df7 509 };
510
511#endif
512 return 0;
513}