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