1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //____________________________________________________________________
20 // Buffer to read RAW ALTRO FMD format from a AliRawReader
22 // This class derives from AliAltroBuffer, but overloads the memer
23 // function Next to do some extra processing. In particular, it tries
24 // to autodetect the sample rate. If zero-suppression was used when
25 // writing the raw data, then the automatic discovery will not work,
26 // and the sample rate should be set explicitly.
28 #include "AliFMDRawStream.h" // ALIFMDRAWSTREAM_H
29 #include <AliRawReader.h> // ALIRAWREADER_H
31 //____________________________________________________________________
32 ClassImp(AliFMDRawStream)
34 //____________________________________________________________________
35 AliFMDRawStream::AliFMDRawStream(AliRawReader* reader, UShort_t sampleRate)
36 : AliAltroRawStream(reader),
37 fSampleRate(sampleRate),
39 fExplicitSampleRate(kFALSE)
41 if (fSampleRate > 0) fExplicitSampleRate = kTRUE;
44 //_____________________________________________________________________________
46 AliFMDRawStream::Next()
48 // read the next raw digit
49 // returns kFALSE if there is no digit left
51 if (AliAltroRawStream::Next()) {
52 if (!fExplicitSampleRate && fPrevPad != fPad)
53 fSampleRate = fTimeBunch / 128;
59 //_____________________________________________________________________________