Fix to AliFMDInput for new AliESDEvent - thanks Hans
[u/mrichter/AliRoot.git] / FMD / AliFMDRawStream.cxx
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4347b38f 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
e802be3e 18//____________________________________________________________________
4347b38f 19//
20// Buffer to read RAW ALTRO FMD format from a AliRawReader
21//
7684b53c 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.
4347b38f 27//
e802be3e 28#include "AliFMDRawStream.h" // ALIFMDRAWSTREAM_H
02a27b50 29// #include <AliRawReader.h> // ALIRAWREADER_H
c2fc1258 30#include "AliFMDParameters.h"
f95a63c4 31// #include <AliLog.h>
32#include "AliFMDDebug.h" // Better debug macros
02a27b50 33// #include <iomanip>
34// #include <iostream>
4347b38f 35
36//____________________________________________________________________
925e6570 37ClassImp(AliFMDRawStream)
1a1fdef7 38#if 0
39 ; // This is here to keep Emacs for indenting the next line
40#endif
4347b38f 41
42//____________________________________________________________________
c2fc1258 43AliFMDRawStream::AliFMDRawStream(AliRawReader* reader)
44 : AliAltroRawStream(reader)
e802be3e 45{
02a27b50 46 // CTOR
c2fc1258 47 fNoAltroMapping = kFALSE;
55f0ce5b 48 // Select FMD DDL's
362c9d61 49 SelectRawData("FMD");
1e8f773e 50}
51
52//_____________________________________________________________________________
53Bool_t
c2fc1258 54AliFMDRawStream::ReadChannel(UInt_t& ddl, UInt_t& addr,
55 UInt_t& len, UShort_t* data)
1e8f773e 56{
02a27b50 57 // Read one channel and return. Returns 0 when there's no more
58 // data.
c2fc1258 59 Int_t l = 0;
60 static Int_t last = 0xFFFF; // 0xFFFF means signal is used
61 Bool_t next = kTRUE;
62 do {
63 Int_t signal = last;
64 if (last > 0x3FF) {
f95a63c4 65 AliFMDDebug(30, ("Last is 0x%x, so reading a new word", last));
c2fc1258 66 next = Next();
67 if (!next) break;
68 signal = GetSignal();
69 if (GetHWAddress() != GetPrevHWAddress() && GetPrevHWAddress() >= 0) {
f95a63c4 70 AliFMDDebug(15, ("New hardware address, was 0x%x, now 0x%x",
c2fc1258 71 GetPrevHWAddress(), GetHWAddress()));
72 addr = GetPrevHWAddress();
362c9d61 73 ddl = GetPrevDDLNumber();
55f0ce5b 74 len = l+1; // Need to add one - l points to last valid index
c2fc1258 75 last = signal;
76 break;
77 }
1e8f773e 78 }
c2fc1258 79 Int_t t = GetTime();
80 l = TMath::Max(l, t);
81 data[t] = signal;
82 last = 0xFFFF;
83 } while (next);
84 return next;
1e8f773e 85}
86
4347b38f 87
4347b38f 88//_____________________________________________________________________________
89//
90// EOF
91//