source: branches/Mars_McMismatchStudy/mcorsika/MCorsikaRead.cc@ 18728

Last change on this file since 18728 was 14892, checked in by tbretz, 13 years ago
Writing the run headers when the file gets closed writes the run header a second time... although this way we miss the number of events, but there is no easy solution at the moment.
File size: 20.5 KB
Line 
1/* ======================================================================== *\
2!
3! *
4! * This file is part of MARS, the MAGIC Analysis and Reconstruction
5! * Software. It is distributed to you in the hope that it can be a useful
6! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
7! * It is distributed WITHOUT ANY WARRANTY.
8! *
9! * Permission to use, copy, modify and distribute this software and its
10! * documentation for any purpose is hereby granted without fee,
11! * provided that the above copyright notice appear in all copies and
12! * that both that copyright notice and this permission notice appear
13! * in supporting documentation. It is provided "as is" without express
14! * or implied warranty.
15! *
16!
17!
18! Author(s): Thomas Bretz 11/2008 <mailto:tbretz@astro.uni-wuerzburg.de>
19 Reiner Rohlfs 11/2010 <mailto:Reiner.Rohlfs@unige.ch>
20!
21! Copyright: Software Development, 2000-2008
22!
23!
24\* ======================================================================== */
25
26//////////////////////////////////////////////////////////////////////////////
27//
28// MCorsikaRead
29//
30// Input Containers:
31// -/-
32//
33// Output Containers:
34// MCorsikaRunHeader
35// MCorsikaEvtHeader
36// MPhotonEvent
37//
38//////////////////////////////////////////////////////////////////////////////
39#include "MCorsikaRead.h"
40
41#include <errno.h>
42#include <fstream>
43
44#include <TSystem.h>
45
46#include "MLog.h"
47#include "MLogManip.h"
48
49#include "MParList.h"
50#include "MStatusDisplay.h"
51
52#include "MCorsikaFormat.h"
53#include "MCorsikaRunHeader.h"
54#include "MCorsikaEvtHeader.h"
55
56#include "MPhotonEvent.h"
57
58ClassImp(MCorsikaRead);
59
60using namespace std;
61
62
63/* ----------- please don't delete and don't care about (Thomas) ------------
64#define kBUFSZ 64 //1024*1024*64
65#include <iomanip.h>
66class bifstream : public istream, public streambuf
67{
68private:
69 char fBuffer[kBUFSZ]; //!
70 FILE *fd;
71
72 int sync()
73 {
74 memset(fBuffer, 0, kBUFSZ);
75 return 0;
76 }
77 int underflow()
78 {
79 int sz=fread(fBuffer, kBUFSZ, 1, fd);
80 //int sz=fread(fBuffer, 1, kBUFSZ, fd);
81 setg(fBuffer, fBuffer, fBuffer+kBUFSZ);
82
83 return sz==1 ? *(unsigned char*)fBuffer : EOF;//EOF;
84 //return sz==kBUFSZ ? *(unsigned char*)fBuffer : EOF;//EOF;
85 }
86public:
87 bifstream(const char *name) : istream(this)
88 {
89 fd = fopen(name, "rb");
90 setbuf(fBuffer, kBUFSZ);
91 }
92};
93*/
94
95// --------------------------------------------------------------------------
96//
97// Default constructor. It tries to open the given file.
98//
99MCorsikaRead::MCorsikaRead(const char *fname, const char *name, const char *title)
100 : fRunHeader(0), fEvtHeader(0), fEvent(0), fTelescopeIdx(-1), fArrayIdx(-1),
101 fForceMode(kFALSE), fFileNames(0), fNumFile(0), fNumEvents(0),
102 fNumTotalEvents(0), fInFormat(0), fParList(0), fNumTelescopes(1), fReadState(0)
103{
104 fName = name ? name : "MRead";
105 fTitle = title ? title : "Read task to read DAQ binary files";
106
107 fFileNames = new TList;
108 fFileNames->SetOwner();
109
110 if (fname!=NULL)
111 AddFile(fname);
112}
113
114// --------------------------------------------------------------------------
115//
116// Destructor. Delete input stream.
117//
118MCorsikaRead::~MCorsikaRead()
119{
120 delete fFileNames;
121 if (fInFormat)
122 delete fInFormat;
123}
124
125/*
126Byte_t MCorsikaRead::IsFileValid(const char *name)
127{
128 MZlib fin(name);
129 if (!fin)
130 return 0;
131
132 Byte_t c[4];
133 fin.read((char*)c, 4);
134 if (!fin)
135 return 0;
136
137 if (c[0]!=0xc0)
138 return 0;
139
140 if (c[1]==0xc0)
141 return 1;
142
143 if (c[1]==0xc1)
144 return 2;
145
146 return 0;
147}
148*/
149
150// --------------------------------------------------------------------------
151//
152// Add a new file to a list of files to be processed, Returns the number
153// of files added. (We can enhance this with a existance chack and
154// wildcard support)
155//
156Int_t MCorsikaRead::AddFile(const char *fname, Int_t entries)
157{
158 TNamed *name = new TNamed(fname, "");
159 fFileNames->AddLast(name);
160 return 1;
161
162}
163// --------------------------------------------------------------------------
164//
165// This opens the next file in the list and deletes its name from the list.
166//
167Int_t MCorsikaRead::OpenNextFile(Bool_t print)
168{
169
170 //
171 // open the input stream and check if it is really open (file exists?)
172 //
173 if (fInFormat)
174 delete fInFormat;
175 fInFormat = NULL;
176
177 //
178 // Check for the existance of a next file to read
179 //
180 TObject *file = fFileNames->At(fNumFile);
181 if (!file)
182 return kFALSE;
183
184 //
185 // open the file which is the first one in the chain
186 //
187 const char *name = file->GetName();
188
189 const char *expname = gSystem->ExpandPathName(name);
190 fInFormat = MCorsikaFormat::CorsikaFormatFactory(expname);
191 delete [] expname;
192
193 if (fInFormat == NULL)
194 return kERROR;
195
196 *fLog << inf << "Open file: '" << name << "'" << endl;
197
198 if (fDisplay)
199 {
200 // Show the number of the last event after
201 // which we now open a new file
202 TString txt = GetFileName();
203 txt += " @ ";
204 txt += GetNumExecutions()-1;
205 fDisplay->SetStatusLine2(txt);
206 }
207
208 fNumFile++;
209
210 if (!fParList)
211 return kTRUE;
212
213 //
214 // Search for MTaskList
215 //
216 MTask *tlist = (MTask*)fParList->FindObject("MTaskList");
217 if (!tlist)
218 {
219 *fLog << err << dbginf << "MTaskList not found... abort." << endl;
220 return kERROR;
221 }
222
223 //
224 // A new file has been opened and new headers have been read.
225 // --> ReInit tasklist
226 //
227 return tlist->ReInit(fParList) ? kTRUE : kERROR;
228}
229
230// --------------------------------------------------------------------------
231//
232// Return file name of current file.
233//
234TString MCorsikaRead::GetFullFileName() const
235{
236 const TObject *file = fFileNames->At(fNumFile-1);
237 return file ? file->GetName() : "";
238}
239
240// --------------------------------------------------------------------------
241//
242// Restart with the first file
243//
244Bool_t MCorsikaRead::Rewind()
245{
246 fNumFile=0;
247 fNumEvents=0;
248 return OpenNextFile()==kTRUE;
249}
250
251// --------------------------------------------------------------------------
252//
253// Calculates the total number of events from all input files and stores
254// the number in fNumTotalEvents.
255//
256Bool_t MCorsikaRead::CalcNumTotalEvents()
257{
258 fNumTotalEvents = 0;
259
260 Bool_t rc = kTRUE;
261
262 while (1)
263 {
264 switch (OpenNextFile(kFALSE))
265 {
266 case kFALSE:
267 break;
268 case kERROR:
269 rc = kFALSE;
270 break;
271 case kTRUE:
272
273 // read run header(1200), telescope position(1201) and
274 // first event header(1202)
275 Bool_t status = kTRUE;
276 Int_t blockType, blockVersion, blockIdentifier, blockLength;
277 while (status &&
278 fInFormat->NextBlock(fReadState/* == 4*/, blockType, blockVersion,
279 blockIdentifier, blockLength))
280 {
281 if (blockType == 1200)
282 status = fRunHeader->ReadEvt(fInFormat);
283
284 else if(blockType == 1201)
285 status = ReadTelescopePosition();
286
287 else if (blockType == 1202)
288 {
289 Float_t buffer[272];
290 status = fInFormat->Read(buffer, 272 * sizeof(Float_t));
291 status = fRunHeader->ReadEventHeader(buffer);
292 break;
293 }
294 else
295 fInFormat->Seek(blockLength);
296 }
297
298 if (status != kTRUE)
299 return status;
300
301 if (!fInFormat->SeekEvtEnd())
302 {
303 *fLog << (fForceMode?warn:err) << "Error: RUNE section not found in file." << endl;
304 if (!fForceMode)
305 return fForceMode ? kTRUE : kFALSE;
306 }
307
308 if (!fRunHeader->ReadEvtEnd(fInFormat, kTRUE))
309 {
310 *fLog << (fForceMode?warn:err) << "Error: Reading RUNE section failed." << endl;
311 if (!fForceMode)
312 return kFALSE;
313 }
314
315 fNumTotalEvents += fRunHeader->GetNumEvents()*fRunHeader->GetNumReuse()*
316 (fTelescopeIdx<0 ? fNumTelescopes : 1);
317 continue;
318 }
319 break;
320 }
321
322 return rc;
323}
324
325// --------------------------------------------------------------------------
326//
327// Reads the the position of all telescopes in one array
328//
329Int_t MCorsikaRead::ReadTelescopePosition()
330{
331 if (!fInFormat->Read(&fNumTelescopes, 4)) return kERROR;
332
333 if (fTelescopeIdx>=fNumTelescopes)
334 {
335 *fLog << err << "ERROR - Requested telescope index " << fTelescopeIdx <<
336 " exceeds number of telescopes " << fNumTelescopes << " in file." << endl;
337 return kERROR;
338 }
339
340 fTelescopeX.Set(fNumTelescopes);
341 fTelescopeY.Set(fNumTelescopes);
342 fTelescopeZ.Set(fNumTelescopes);
343 fTelescopeR.Set(fNumTelescopes);
344
345 if (!fInFormat->Read(fTelescopeX.GetArray(), 4*fNumTelescopes)) return kERROR;
346 if (!fInFormat->Read(fTelescopeY.GetArray(), 4*fNumTelescopes)) return kERROR;
347 if (!fInFormat->Read(fTelescopeZ.GetArray(), 4*fNumTelescopes)) return kERROR;
348 if (!fInFormat->Read(fTelescopeR.GetArray(), 4*fNumTelescopes)) return kERROR;
349
350 *fLog << all;
351 *fLog << "Number of telescopes: " << fNumTelescopes << " (using ";
352 if (fTelescopeIdx>=0)
353 *fLog << "telescope " << fTelescopeIdx;
354 else
355 *fLog << "all telescopes";
356 *fLog << ")" << endl;
357
358 const Int_t lo = fTelescopeIdx<0 ? 0 : fTelescopeIdx;
359 const Int_t up = fTelescopeIdx<0 ? fNumTelescopes : fTelescopeIdx+1;
360
361 for (int i=lo; i<up; i++)
362 {
363 *fLog << all << "Telescope #" << setw(4) << i << " [X/Y/Z (R)]: ";
364 *fLog << setw(7) << fTelescopeX[i] << "/";
365 *fLog << setw(7) << fTelescopeY[i] << "/";
366 *fLog << setw(7) << fTelescopeZ[i] << " (R=" << setw(4) << fTelescopeR[i] << ")" << endl;
367 }
368
369 fNumTelescope = 0;
370
371 return kTRUE;
372}
373
374// --------------------------------------------------------------------------
375//
376// Reads the header of the next block. Depending on the current fReadState
377// and the block-type of the new header the methods decides wether
378// to continue the reading (kCONTINEU), to exit the Process() method (kTRUE)
379// or to try to read a new file (kFALSE).
380// Return codes:
381// - kFALSE : end of file was detected and no new header was read
382// - kTRU: A EventEnd was already found (fReadStatus == 3) and
383// the current header is not the RunEnd
384// - kCONTINUE: all other cases.
385Int_t MCorsikaRead::ReadNextBlockHeader()
386{
387 if (fInFormat->NextBlock(fReadState/* == 4*/, fBlockType, fBlockVersion,
388 fBlockIdentifier, fBlockLength) == kFALSE)
389 // end of file
390 return kFALSE;
391/*
392 gLog << "Next fBlock: type=" << fBlockType << " version=" << fBlockVersion;
393 gLog << " identifier=" << fBlockIdentifier << " length=" << fBlockLength;
394 gLog << " readState= " << fReadState << endl;
395*/
396 if (fReadState == 3 && fBlockType != 1210)
397 // fReadState == 3 means we have read the event end
398 // most of the time we can now save our data. BUT:
399 // bBlockType != 1210 means the next block is not RUNE,
400 // we want to read the RUNE block, before we
401 // save everything (last events and RUNE)
402 return kTRUE;
403
404 if (fBlockType == 1204 && fReadState != 2)
405 // next is a new set of telescope arrays, we store the previous ones
406 // but not if this is the first one (fReadState != 2)
407 return kTRUE;
408
409 return kCONTINUE;
410
411}
412
413// --------------------------------------------------------------------------
414//
415// The PreProcess of this task checks for the following containers in the
416// list:
417// MCorsikaRunHeader <output> if not found it is created
418// MCorsikaEvtHeader <output> if not found it is created
419// MCorsikaEvtData <output> if not found it is created
420// MCorsikaCrateArray <output> if not found it is created
421// MCorsikaEvtTime <output> if not found it is created (MTime)
422//
423// If all containers are found or created the run header is read from the
424// binary file and printed. If the Magic-Number (file identification)
425// doesn't match we stop the eventloop.
426//
427// Now the EvtHeader and EvtData containers are initialized.
428//
429Int_t MCorsikaRead::PreProcess(MParList *pList)
430{
431 //
432 // open the input stream
433 // first of all check if opening the file in the constructor was
434 // successfull
435 //
436 fParList = 0;
437
438 //
439 // check if all necessary containers exist in the Parameter list.
440 // if not create one and add them to the list
441 //
442 fRunHeader = (MCorsikaRunHeader*)pList->FindCreateObj("MCorsikaRunHeader");
443 if (!fRunHeader)
444 return kFALSE;
445
446 fEvtHeader = (MCorsikaEvtHeader*)pList->FindCreateObj("MCorsikaEvtHeader");
447 if (!fEvtHeader)
448 return kFALSE;
449
450 fEvent = (MPhotonEvent*)pList->FindCreateObj("MPhotonEvent");
451 if (!fEvent)
452 return kFALSE;
453
454 *fLog << inf << "Calculating number of total events..." << flush;
455 if (!CalcNumTotalEvents())
456 return kFALSE;
457 *fLog << inf << " " << fNumTotalEvents << " found." << endl;
458
459 fNumFile=0;
460 fNumEvents=0;
461
462 fParList = pList;
463
464 return kTRUE;
465}
466
467// --------------------------------------------------------------------------
468//
469// The Process reads one event from the binary file:
470// - The event header is read
471// - the run header is read (only once per file)
472// - the raw data information of one event is read
473//
474Int_t MCorsikaRead::Process()
475{
476 while (1) // loop for multiple input files
477 {
478 if (fInFormat)
479 {
480
481 while (1) // loop per input block
482 {
483
484 if (fReadState == 4)
485 {
486 fTopBlockLength -= fBlockLength + 12;
487 if (fTopBlockLength <= 0)
488 // all data of a top block are read, go back to normal state
489 fReadState = 15; // not used
490 }
491
492
493 Int_t status = kTRUE;
494 switch (fBlockType)
495 {
496 case 1200: // the run header
497 status = fRunHeader->ReadEvt(fInFormat);
498 fReadState = 1; // RUNH is read
499 break;
500
501 case 1201: // telescope position
502 status = ReadTelescopePosition();
503 break;
504
505 case 1202: // the event header
506 Float_t buffer[272];
507 if (!fInFormat->Read(buffer, 272 * sizeof(Float_t)))
508 return kFALSE;
509
510 if (fReadState == 1) // first event after RUN header
511 {
512 fRunHeader->ReadEventHeader(buffer);
513 fRunHeader->Print();
514 }
515
516 status = fEvtHeader->ReadEvt(buffer);
517 if (fArrayIdx >= (Int_t)fEvtHeader->GetTotReuse())
518 {
519 *fLog << err << "ERROR - Requested array index " << fArrayIdx <<
520 " exceeds number of arrays " << fEvtHeader->GetTotReuse() <<
521 " in file." << endl;
522 return kERROR;
523 }
524
525 fReadState = 2;
526 break;
527
528 case 1204: // top level block for one array (only for eventio data)
529 if (fArrayIdx < 0 || fArrayIdx == fBlockIdentifier)
530 {
531 fReadState = 4;
532 fTopBlockLength = fBlockLength;
533 }
534 else
535 // skip this array of telescopes
536 fInFormat->Seek(fBlockLength);
537
538 break;
539
540
541 case 1205: // eventio data
542 {
543 Int_t telIdx = fBlockIdentifier % 1000;
544 if (fBlockVersion == 0 &&
545 (fTelescopeIdx < 0 || fTelescopeIdx == telIdx) )
546 {
547 status = fEvent->ReadEventIoEvt(fInFormat);
548
549 Int_t arrayIdx = fBlockIdentifier / 1000;
550 Float_t xArrOff, yArrOff;
551 fEvtHeader->GetArrayOffset(arrayIdx, xArrOff, yArrOff);
552 fEvtHeader->SetTelescopeOffset(arrayIdx,
553 xArrOff + fTelescopeY[telIdx],
554 yArrOff - fTelescopeX[telIdx] );
555 fEvent->AddXY(xArrOff + fTelescopeY[telIdx],
556 yArrOff - fTelescopeX[telIdx]);
557 fEvent->SimWavelength(fRunHeader->GetWavelengthMin(),
558 fRunHeader->GetWavelengthMax());
559 }
560 else
561 // skip this telescope
562 fInFormat->Seek(fBlockLength);
563 }
564 break;
565
566 case 1209: // the event end
567 status = fEvtHeader->ReadEvtEnd(fInFormat);
568
569 if (fReadState == 10 || fReadState == 2)
570 {
571 // corsika events
572 fEvtHeader->ResetNumReuse();
573 fEvtHeader->InitXY();
574 fBlockType = 1109; // save corsika events
575 continue;
576 }
577
578 fReadState = 3; // event closed, run still open
579 break;
580
581
582 case 1210: // the run end
583 status = fRunHeader->ReadEvtEnd(fInFormat, kTRUE);
584 fNumEvents += fRunHeader->GetNumEvents();
585 //fRunHeader->SetReadyToSave();
586 fReadState = 5; // back to starting point
587 // this may be the last block in the file.
588 // We exit to write the header into the file
589 fBlockLength = 0;
590 fBlockType = 0; // not available type
591 return kTRUE;
592 break;
593
594
595 case 1105: // event block of raw format
596 if (fReadState == 2 || fReadState == 10)
597 {
598 Int_t oldSize = fRawEvemtBuffer.size();
599 fRawEvemtBuffer.resize(oldSize + fBlockLength / sizeof(Float_t));
600 status = fInFormat->Read(&fRawEvemtBuffer[oldSize], fBlockLength);
601 fReadState = 10;
602 }
603 else
604 fInFormat->Seek(fBlockLength);
605 break;
606
607
608 case 1109: // save corsika events
609 fEvtHeader->InitXY();
610 status = fEvent->ReadCorsikaEvt(&fRawEvemtBuffer[0],
611 fRawEvemtBuffer.size() / 7,
612 fEvtHeader->GetNumReuse()+1);
613 fEvtHeader->IncNumReuse();
614
615 if (fEvtHeader->GetNumReuse() == fRunHeader->GetNumReuse())
616 {
617 // this was the last reuse. Set fBlockType to EVTE to save
618 // it the next time.
619 fRawEvemtBuffer.resize(0);
620
621 fReadState = 3;
622 fBlockType = 1209;
623 }
624 else
625 // save this reuse
626 return status;
627
628 break;
629
630 default:
631 // unknown block, we skip it
632 fReadState = 15;
633 fInFormat->Seek(fBlockLength);
634
635 }
636
637 if (status != kTRUE)
638 // there was an error while data were read
639 return status;
640
641 Int_t headerStatus = ReadNextBlockHeader();
642 if (headerStatus == kFALSE)
643 // end of file
644 break;
645 if (headerStatus == kTRUE)
646 // we shall quit this loop
647 return kTRUE;
648
649 // else continue
650 }
651
652 }
653
654 //
655 // If an event could not be read from file try to open new file
656 //
657 const Int_t rc = OpenNextFile();
658 if (rc!=kTRUE)
659 return rc;
660
661 if (ReadNextBlockHeader() == kFALSE)
662 return kFALSE;
663 }
664 return kTRUE;
665}
666
667
668// --------------------------------------------------------------------------
669//
670// Close the file. Check whether the number of read events differs from
671// the number the file should containe (MCorsikaRunHeader). Prints a warning
672// if it doesn't match.
673//
674Int_t MCorsikaRead::PostProcess()
675{
676
677 const UInt_t n = fNumEvents*fRunHeader->GetNumReuse()*(fTelescopeIdx<0?fNumTelescopes:1);
678
679 //
680 // Sanity check for the number of events
681 //
682 if (n==GetNumExecutions()-1 || GetNumExecutions()==0)
683 return kTRUE;
684
685 *fLog << warn << dec;
686 *fLog << "Warning - number of read events (" << GetNumExecutions()-1;
687 *fLog << ") doesn't match number in run header(s) (";
688 *fLog << fRunHeader->GetNumReuse() << "*" << fNumEvents << "=" << n << ")." << endl;
689
690
691 return kTRUE;
692}
693
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