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e802be3e | 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 | **************************************************************************/ | |
e802be3e | 15 | /* $Id$ */ |
c2fc1258 | 16 | /** @file AliFMDRawWriter.cxx |
17 | @author Christian Holm Christensen <cholm@nbi.dk> | |
18 | @date Mon Mar 27 12:45:56 2006 | |
19 | @brief Class to write raw data | |
20 | */ | |
e802be3e | 21 | //____________________________________________________________________ |
22 | // | |
23 | // Class to write ADC values to a raw data file | |
24 | // | |
7684b53c | 25 | // This class writes FMD Raw data to a file. The sample rate (number |
26 | // of times the ALTRO ADC samples each pre-amp. channel - that is, | |
27 | // data from a single strip), can be set via SetSampleRate. | |
28 | // | |
29 | // Zero-suppression can be enabled by calling SetThreshold with a | |
30 | // non-zero argument. ADC values less than the value set will not be | |
31 | // written to output. Note, that if you use zero-suppression, you | |
32 | // need to explicitly set the sample rate when reading back the data | |
33 | // with AliFMDRawReader. | |
34 | // | |
35 | // This class uses the AliAltroBuffer class to write the data in the | |
36 | // ALTRO format. See the Exec member function for more information on | |
37 | // that format. | |
38 | // | |
f95a63c4 | 39 | // #include <AliLog.h> // ALILOG_H |
e2c858f2 | 40 | #include "AliFMDDebug.h" // Better debug macros |
56b1929b | 41 | #include <AliLoader.h> // ALILOADER_H |
e2c858f2 | 42 | #include <AliAltroBufferV3.h> // ALIALTROBUFFER_H |
e802be3e | 43 | #include "AliFMD.h" // ALIFMD_H |
1a1fdef7 | 44 | #include "AliFMDParameters.h" // ALIFMDPARAMETERS_H |
e802be3e | 45 | #include "AliFMDDigit.h" // ALIFMDDIGIT_H |
46 | #include "AliFMDRawWriter.h" // ALIFMDRAWREADER_H | |
1e8f773e | 47 | #include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H |
c2fc1258 | 48 | // #include "AliFMDAltroIO.h" // ALIFMDALTROWRITER_H |
56b1929b | 49 | #include <TArrayI.h> // ROOT_TArrayI |
cce354f6 | 50 | #include <TArrayF.h> // ROOT_TArrayI |
51 | #include <TArrayC.h> // ROOT_TArrayI | |
e802be3e | 52 | #include <TClonesArray.h> // ROOT_TClonesArray |
02a27b50 | 53 | // #include <fstream> |
362c9d61 | 54 | #include "AliDAQ.h" |
e802be3e | 55 | |
56 | //____________________________________________________________________ | |
925e6570 | 57 | ClassImp(AliFMDRawWriter) |
1a1fdef7 | 58 | #if 0 |
59 | ; // This is here to keep Emacs for indenting the next line | |
60 | #endif | |
e802be3e | 61 | |
62 | //____________________________________________________________________ | |
63 | AliFMDRawWriter::AliFMDRawWriter(AliFMD* fmd) | |
64 | : TTask("FMDRawWriter", "Writer of Raw ADC values from the FMD"), | |
b5ee4425 | 65 | fFMD(fmd), |
66 | fSampleRate(0), | |
67 | fChannelsPerAltro(0), | |
68 | fThreshold(0) | |
02a27b50 | 69 | { |
70 | // CTOR | |
ef8e8623 | 71 | AliFMDDebug(5, ("Created AliFMDRawWriter object")); |
02a27b50 | 72 | } |
73 | ||
e802be3e | 74 | |
75 | ||
76 | //____________________________________________________________________ | |
77 | void | |
78 | AliFMDRawWriter::Exec(Option_t*) | |
79 | { | |
80 | // Turn digits into raw data. | |
81 | // | |
82 | // Digits are read from the Digit branch, and processed to make | |
83 | // three DDL files, one for each of the sub-detectors FMD1, FMD2, | |
84 | // and FMD3. | |
85 | // | |
86 | // The raw data files consists of a header, followed by ALTRO | |
87 | // formatted blocks. | |
88 | // | |
89 | // +-------------+ | |
90 | // | Header | | |
91 | // +-------------+ | |
92 | // | ALTRO Block | | |
93 | // | ... | | |
94 | // +-------------+ | |
95 | // DDL file | |
96 | // | |
97 | // An ALTRO formatted block, in the FMD context, consists of a | |
98 | // number of counts followed by a trailer. | |
99 | // | |
100 | // +------------------+ | |
101 | // | Count | | |
102 | // | ... | | |
103 | // | possible fillers | | |
104 | // +------------------+ | |
105 | // | Trailer | | |
106 | // +------------------+ | |
107 | // ALTRO block | |
108 | // | |
109 | // The counts are listed backwards, that is, starting with the | |
110 | // latest count, and ending in the first. | |
111 | // | |
112 | // Each count consist of 1 or more ADC samples of the VA1_ALICE | |
113 | // pre-amp. signal. Just how many samples are used depends on | |
114 | // whether the ALTRO over samples the pre-amp. Each sample is a | |
115 | // 10-bit word, and the samples are grouped into 40-bit blocks | |
116 | // | |
117 | // +------------------------------------+ | |
c2fc1258 | 118 | // | S(1) | S(2) | S(3) | S(4) | |
e802be3e | 119 | // | ... | ... | ... | ... | |
c2fc1258 | 120 | // | S(n) | T(n) | n+2 | 2AA | |
e802be3e | 121 | // +------------------------------------+ |
122 | // Counts + possible filler | |
123 | // | |
124 | // The trailer of the number of words of signales, the starting | |
125 | // strip number, the sector number, and the ring ID; each 10-bit | |
126 | // words, packed into 40-bits. | |
127 | // | |
128 | // +------------------------------------+ | |
c2fc1258 | 129 | // | 2AAA | Len | A | Address | |
e802be3e | 130 | // +------------------------------------+ |
131 | // Trailer | |
132 | // | |
133 | // Note, that this method assumes that the digits are ordered. | |
134 | // | |
135 | AliLoader* loader = fFMD->GetLoader(); | |
ef8e8623 | 136 | loader->LoadDigits("READ"); |
e802be3e | 137 | TTree* digitTree = loader->TreeD(); |
138 | if (!digitTree) { | |
ef8e8623 | 139 | AliError("no digit tree"); |
e802be3e | 140 | return; |
141 | } | |
142 | ||
143 | TClonesArray* digits = new TClonesArray("AliFMDDigit", 1000); | |
144 | fFMD->SetTreeAddress(); | |
145 | TBranch* digitBranch = digitTree->GetBranch(fFMD->GetName()); | |
146 | if (!digitBranch) { | |
ef8e8623 | 147 | AliError(Form("no branch for %s", fFMD->GetName())); |
e802be3e | 148 | return; |
149 | } | |
150 | digitBranch->SetAddress(&digits); | |
151 | ||
152 | Int_t nEvents = Int_t(digitTree->GetEntries()); | |
f95a63c4 | 153 | AliFMDDebug(5, ("Got a total of %5d events from tree", nEvents)); |
e802be3e | 154 | for (Int_t event = 0; event < nEvents; event++) { |
155 | fFMD->ResetDigits(); | |
156 | digitTree->GetEvent(event); | |
157 | ||
1e8f773e | 158 | // Write out the digits |
159 | WriteDigits(digits); | |
160 | } | |
161 | loader->UnloadDigits(); | |
162 | } | |
e802be3e | 163 | |
c2fc1258 | 164 | #if 1 |
165 | //____________________________________________________________________ | |
166 | void | |
167 | AliFMDRawWriter::WriteDigits(TClonesArray* digits) | |
168 | { | |
02a27b50 | 169 | // WRite an array of digits to disk file |
c2fc1258 | 170 | Int_t nDigits = digits->GetEntries(); |
171 | if (nDigits < 1) return; | |
f95a63c4 | 172 | AliFMDDebug(5, ("Got a total of %5d digits from tree", nDigits)); |
c2fc1258 | 173 | |
174 | AliFMDParameters* pars = AliFMDParameters::Instance(); | |
175 | UShort_t threshold = 0; | |
f95a63c4 | 176 | UInt_t prevddl = 0xFFFF; |
c2fc1258 | 177 | UInt_t prevaddr = 0xFFF; |
178 | // UShort_t prevStrip = 0; | |
179 | ||
180 | // Which channel number in the ALTRO channel we're at | |
181 | UShort_t nWords = 0; | |
182 | UShort_t preSamples = 0; | |
f38b1653 | 183 | UShort_t sampleRate = 0; |
c2fc1258 | 184 | |
185 | // A buffer to hold 1 ALTRO channel - Normally, one ALTRO channel | |
186 | // holds 128 VA1_ALICE channels, sampled at a rate of `sampleRate' | |
187 | TArrayI data(pars->GetChannelsPerAltro() * 8); | |
cce354f6 | 188 | TArrayF peds(pars->GetChannelsPerAltro() * 8); |
189 | TArrayF noise(pars->GetChannelsPerAltro() * 8); | |
c2fc1258 | 190 | |
191 | // The Altro buffer | |
e2c858f2 | 192 | AliAltroBufferV3* altro = 0; |
f38b1653 | 193 | |
194 | Int_t totalWords = 0; | |
195 | Int_t nCounts = 0; | |
196 | ||
c2fc1258 | 197 | // Loop over the digits in the event. Note, that we assume the |
198 | // the digits are in order in the branch. If they were not, we'd | |
199 | // have to cache all channels before we could write the data to | |
200 | // the ALTRO buffer, or we'd have to set up a map of the digits. | |
f95a63c4 | 201 | UShort_t oldDet = 1000; |
c2fc1258 | 202 | for (Int_t i = 0; i < nDigits; i++) { |
203 | // Get the digit | |
204 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
c2fc1258 | 205 | UShort_t det = digit->Detector(); |
206 | Char_t ring = digit->Ring(); | |
207 | UShort_t sector = digit->Sector(); | |
208 | UShort_t strip = digit->Strip(); | |
b995fc28 | 209 | UShort_t ddl, addr, time; |
f38b1653 | 210 | |
cce354f6 | 211 | AliFMDDebug(15, ("Processing digit # %5d FMD%d%c[%2d,%3d]", |
f38b1653 | 212 | i, det, ring, sector, strip)); |
213 | threshold = pars->GetZeroSuppression(det, ring, sector, strip); | |
214 | sampleRate = pars->GetSampleRate(det, ring, sector, strip); | |
215 | preSamples = pars->GetPreSamples(det, ring, sector, strip); | |
216 | ||
f95a63c4 | 217 | if (det != oldDet) { |
218 | AliFMDDebug(5, ("Got new detector: %d (was %d)", det, oldDet)); | |
219 | oldDet = det; | |
220 | } | |
cce354f6 | 221 | AliFMDDebug(15, ("Sample rate is %d", sampleRate)); |
625d7886 | 222 | |
f38b1653 | 223 | for (UShort_t j = 0; j < sampleRate; j++) { |
224 | if (!pars->Detector2Hardware(det,ring,sector,strip,j,ddl,addr,time)){ | |
225 | AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]-%d", | |
226 | det, ring, sector, strip, j)); | |
227 | continue; | |
c2fc1258 | 228 | } |
c2fc1258 | 229 | |
f38b1653 | 230 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d]-%d-> 0x%x/0x%x/%04d", |
231 | det, ring, sector, strip, j, ddl, addr, time)); | |
232 | if (addr != prevaddr) { | |
233 | // Flush a channel to output | |
234 | AliFMDDebug(5, ("Now hardware address 0x%x from FMD%d%c[%2d,%3d]-%d" | |
235 | "(b: 0x%02x, a: 0x%01x, c: 0x%02x, t: %04d), " | |
236 | "flushing old channel at 0x%x with %d words", | |
237 | addr, det, ring, sector, strip, j, | |
238 | (addr >> 7), (addr >> 4) & 0x7, addr & 0xf, | |
239 | time, prevaddr, nWords)); | |
240 | totalWords += nWords; | |
cce354f6 | 241 | ZeroSuppress(data.fArray, nWords, peds.fArray, noise.fArray, threshold); |
f38b1653 | 242 | if (altro) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold); |
cce354f6 | 243 | data.Reset(-1); |
244 | peds.Reset(0); | |
245 | noise.Reset(0); | |
f38b1653 | 246 | nWords = 0; |
247 | prevaddr = addr; | |
248 | } | |
249 | if (ddl != prevddl) { | |
250 | AliFMDDebug(10, ("FMD: New DDL, was %d, now %d", prevddl, ddl)); | |
251 | // If an altro exists, delete the object, flushing the data to | |
252 | // disk, and closing the file. | |
253 | if (altro) { | |
254 | // When the first argument is false, we write the real | |
255 | // header. | |
256 | AliFMDDebug(15, ("Closing output")); | |
257 | altro->Flush(); | |
258 | altro->WriteDataHeader(kFALSE, kFALSE); | |
259 | delete altro; | |
260 | altro = 0; | |
261 | } | |
262 | prevddl = ddl; | |
263 | // Need to open a new DDL! | |
e2c858f2 | 264 | TString filename(AliDAQ::DdlFileName(fFMD ? fFMD->GetName() : "FMD", ddl)); |
f38b1653 | 265 | AliFMDDebug(5, ("New altro buffer with DDL file %s", filename.Data())); |
266 | // Create a new altro buffer - a `1' as the second argument | |
267 | // means `write mode' | |
e2c858f2 | 268 | altro = new AliAltroBufferV3(filename.Data()); |
f38b1653 | 269 | altro->SetMapping(pars->GetAltroMap()); |
270 | // Write a dummy (first argument is true) header to the DDL | |
271 | // file - later on, when we close the file, we write the real | |
272 | // header | |
273 | altro->WriteDataHeader(kTRUE, kFALSE); | |
274 | } | |
275 | ||
cce354f6 | 276 | // Get the pedestal value |
277 | peds[time] = pars->GetPedestal(det, ring, sector, strip); | |
278 | noise[time] = pars->GetPedestalWidth(det, ring, sector, strip); | |
279 | ||
f38b1653 | 280 | // Store the counts of the ADC in the channel buffer |
cce354f6 | 281 | AliFMDDebug(15, ("Storing FMD%d%c[%02d,%03d]-%d in timebin %d (%d)", |
f38b1653 | 282 | det, ring, sector, strip, j, time, preSamples)); |
cce354f6 | 283 | data[time] = digit->Count(j); |
c2fc1258 | 284 | nWords++; |
f38b1653 | 285 | nCounts++; |
286 | if (time == preSamples) { | |
cce354f6 | 287 | AliFMDDebug(15, ("Filling in %4d for %d presamples", |
288 | data[time], preSamples)); | |
289 | for (int k = 0; k < preSamples; k++) { | |
290 | peds[k] = peds[time]; | |
291 | noise[k] = noise[time]; | |
292 | data[k] = data[time]; | |
293 | } | |
f38b1653 | 294 | nWords += preSamples; |
295 | } | |
c2fc1258 | 296 | } |
297 | } | |
298 | // Finally, we need to close the final ALTRO buffer if it wasn't | |
299 | // already | |
300 | if (altro) { | |
cce354f6 | 301 | ZeroSuppress(data.fArray, nWords, peds.fArray, noise.fArray, threshold); |
c2fc1258 | 302 | if (nWords > 0) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold); |
303 | altro->Flush(); | |
304 | altro->WriteDataHeader(kFALSE, kFALSE); | |
305 | delete altro; | |
306 | } | |
f38b1653 | 307 | AliFMDDebug(5, ("Wrote a total of %d words for %d counts", |
308 | nWords, nCounts)); | |
c2fc1258 | 309 | } |
cce354f6 | 310 | //____________________________________________________________________ |
311 | void | |
312 | AliFMDRawWriter::ZeroSuppress(Int_t*& data, Int_t nWords, | |
313 | const Float_t* peds, | |
314 | const Float_t* noise, UShort_t threshold) const | |
315 | { | |
316 | // Simulate the ALTRO zero-suppression filter. The data passed in | |
317 | // the first array is modified, such that all suppressed channels | |
318 | // are set to some value below threshold. | |
319 | // | |
320 | // If threshold == 0 zero suppression is considered disabled, and no | |
321 | // action is taken. | |
322 | if (threshold <= 0) return; | |
323 | ||
324 | // const Short_t width = 3; | |
325 | // If fPedSubtract is false, compare data-(ped+f*noise), if true | |
326 | // always modify data by -(ped+f*noise), and force negative values | |
327 | // to zero. | |
328 | Bool_t pedSubtract = AliFMDParameters::Instance()->IsZSPedSubtract(); | |
329 | UShort_t pre = AliFMDParameters::Instance()->GetZSPreSamples(); | |
330 | UShort_t post = AliFMDParameters::Instance()->GetZSPostSamples(); | |
331 | Float_t factor = AliFMDParameters::Instance()->GetPedestalFactor(); | |
332 | ||
333 | TArrayC mask(nWords+1); | |
334 | for (Short_t i = 0; i < nWords; i++) { | |
335 | Float_t val = data[i] - peds[i] - factor * noise[i]; | |
336 | if (val < 0.5) val = 0; | |
337 | if (pedSubtract) data[i] = Int_t(val) & 0x3FF; | |
338 | ||
339 | mask[i] = (val > threshold ? 1 : 0); | |
340 | AliFMDDebug(10, ("Comparing sample %d %d-%f-%f*%f=%f to %d -> %s", | |
341 | i, data[i], peds[i], factor, noise[i], val, threshold, | |
342 | (mask[i] ? "above" : "below"))); | |
343 | } | |
344 | ||
345 | for (Short_t i = 0; i < nWords; i++) { | |
346 | if (mask[i]) { // Signal above, so do nothing | |
347 | AliFMDDebug(10, ("Sample %d, above", i)); | |
348 | if (i < nWords-1 && !mask[i+1]) { | |
349 | // After a valid sample. Increase the pointer to the next | |
350 | // possible data, thereby skipping over the post-samples | |
351 | AliFMDDebug(10, ("At sample %d, next is below, skipping %d to %d", | |
352 | i, post, i+post)); | |
353 | i += post; | |
354 | } | |
355 | continue; | |
356 | } | |
357 | ||
358 | Short_t lookahead = TMath::Min(Short_t(nWords), Short_t(i+pre)); | |
359 | AliFMDDebug(10, ("Sample %d, below, look to %d", i, lookahead)); | |
360 | if (mask[lookahead] && pre > 0) { | |
361 | AliFMDDebug(10, ("Sample %d is a pre-sample to %d", i, lookahead)); | |
362 | // We're in a presample, so don't modify the data, and increase | |
363 | // counter by the number of pre-samples | |
364 | i += pre-1; | |
365 | continue; | |
366 | } | |
367 | ||
368 | // This sample must be surpressed | |
369 | data[i] = threshold - 1; | |
370 | } | |
371 | } | |
372 | ||
c2fc1258 | 373 | #else |
1e8f773e | 374 | //____________________________________________________________________ |
375 | void | |
376 | AliFMDRawWriter::WriteDigits(TClonesArray* digits) | |
377 | { | |
378 | Int_t nDigits = digits->GetEntries(); | |
379 | if (nDigits < 1) return; | |
e802be3e | 380 | |
1e8f773e | 381 | AliFMDParameters* pars = AliFMDParameters::Instance(); |
382 | AliFMDAltroWriter* writer = 0; | |
383 | Int_t sampleRate = -1; | |
384 | UShort_t hwaddr = 0; | |
385 | UShort_t ddl = 0; | |
386 | std::ofstream* file = 0; | |
387 | Int_t ret = 0; | |
388 | for (Int_t i = 0; i < nDigits; i++) { | |
389 | // Get the digit | |
390 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
391 | UInt_t thisDDL, thisHwaddr; | |
392 | UShort_t det = digit->Detector(); | |
393 | Char_t ring = digit->Ring(); | |
394 | UShort_t sector = digit->Sector(); | |
395 | UShort_t strip = digit->Strip(); | |
396 | if (!pars->Detector2Hardware(det,ring,sector,strip,thisDDL,thisHwaddr)) { | |
397 | AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]", | |
398 | det, ring, sector, strip)); | |
399 | continue; | |
400 | } | |
f95a63c4 | 401 | AliFMDDebug(40, ("Got DDL=%d and address=%d from FMD%d%c[%2d,%3d]", |
1e8f773e | 402 | thisDDL, thisHwaddr, det, ring, sector, strip)); |
403 | // Check if we're still in the same channel | |
404 | if (thisHwaddr != hwaddr) { | |
f95a63c4 | 405 | AliFMDDebug(30, ("Now hardware address 0x%x from FMD%d%c[%2d,%3d] " |
1e8f773e | 406 | "(board 0x%x, chip 0x%x, channel 0x%x)", |
407 | thisHwaddr, det, ring, sector, strip, | |
408 | (thisHwaddr >> 7), (thisHwaddr >> 4) & 0x7, | |
409 | thisHwaddr & 0xf)); | |
410 | if (writer) writer->AddChannelTrailer(hwaddr); | |
411 | hwaddr = thisHwaddr; | |
412 | } | |
413 | // Check if we're still in the same detector (DDL) | |
414 | if (ddl != thisDDL) { | |
415 | if (writer) { | |
f95a63c4 | 416 | AliFMDDebug(1, ("Closing altro writer %p", writer)); |
1e8f773e | 417 | if ((ret = writer->Close()) < 0) { |
418 | AliError(Form("Error: %s", writer->ErrorString(ret))); | |
419 | return; | |
420 | } | |
421 | delete writer; | |
422 | writer = 0; | |
423 | file->close(); | |
424 | delete file; | |
425 | file = 0; | |
426 | } | |
427 | ddl = thisDDL; | |
428 | } | |
429 | // If we haven't got a writer (either because none were made so | |
430 | // far, or because we've switch DDL), make one. | |
431 | if (!writer) { | |
f95a63c4 | 432 | AliFMDDebug(1, ("Opening new ALTRO writer w/file %s", |
433 | AliDAQ::DdlFileName("FMD",ddl))); | |
362c9d61 | 434 | file = new std::ofstream(AliDAQ::DdlFileName("FMD",ddl)); |
1e8f773e | 435 | if (!file || !*file) { |
f95a63c4 | 436 | AliFatal(Form("Failed to open file %s", |
437 | AliDAQ::DdlFileName("FMD",ddl))); | |
1e8f773e | 438 | return; |
439 | } | |
440 | writer = new AliFMDAltroWriter(*file); | |
441 | writer->SetThreshold(pars->GetZeroSuppression(det, ring, sector, strip)); | |
1e8f773e | 442 | } |
443 | // Write out our signal | |
c2fc1258 | 444 | sampleRate = pars->GetSampleRate(det,ring,sector,strip); |
1e8f773e | 445 | writer->AddSignal(digit->Count1()); |
446 | if (sampleRate >= 2) writer->AddSignal(digit->Count2()); | |
447 | if (sampleRate >= 3) writer->AddSignal(digit->Count3()); | |
448 | } | |
449 | if (writer) { | |
450 | writer->AddChannelTrailer(hwaddr); | |
451 | writer->Close(); | |
452 | delete writer; | |
453 | file->close(); | |
454 | delete file; | |
455 | } | |
456 | } | |
9f662337 | 457 | #endif |
7684b53c | 458 | |
c2fc1258 | 459 | |
7684b53c | 460 | |
461 | ||
e802be3e | 462 | //____________________________________________________________________ |
463 | // | |
464 | // EOF | |
465 | // | |
6c652449 | 466 |