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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 | ||
18 | //____________________________________________________________________ | |
19 | // | |
20 | // Buffer to read RAW ALTRO FMD format from a AliRawReader | |
21 | // | |
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. | |
27 | // | |
28 | #include "AliFMDRawStream.h" // ALIFMDRAWSTREAM_H | |
29 | // #include <AliRawReader.h> // ALIRAWREADER_H | |
30 | #include "AliFMDParameters.h" | |
31 | // #include <AliLog.h> | |
32 | #include "AliFMDDebug.h" // Better debug macros | |
33 | // #include <iomanip> | |
34 | // #include <iostream> | |
35 | #include "AliRawReader.h" | |
36 | #include <climits> | |
37 | ||
38 | //____________________________________________________________________ | |
39 | ClassImp(AliFMDRawStream) | |
40 | #if 0 | |
41 | ; // This is here to keep Emacs for indenting the next line | |
42 | #endif | |
43 | ||
44 | //____________________________________________________________________ | |
45 | AliFMDRawStream::AliFMDRawStream(AliRawReader* reader) | |
46 | : AliAltroRawStream(reader) | |
47 | { | |
48 | // CTOR | |
49 | reader->Reset(); | |
50 | // Select FMD DDL's | |
51 | SelectRawData("FMD"); | |
52 | } | |
53 | ||
54 | //_____________________________________________________________________________ | |
55 | Bool_t | |
56 | AliFMDRawStream::ReadChannel(UInt_t& ddl, UInt_t& addr, | |
57 | UInt_t& len, volatile UShort_t* data) | |
58 | { | |
59 | // Read one channel and return. Returns 0 when there's no more | |
60 | // data. | |
61 | Int_t l = 0; | |
62 | static Int_t last = 0xFFFF; // 0xFFFF means signal is used | |
63 | Bool_t next = kTRUE; | |
64 | do { | |
65 | Int_t signal = last; | |
66 | if (last > 0x3FF) { | |
67 | AliFMDDebug(30, ("Last is 0x%x, so reading a new word", last)); | |
68 | next = Next(); | |
69 | if(!next){ | |
70 | AliFMDDebug(15, ("Read word # %d (!next)", l)); | |
71 | addr = GetPrevHWAddress(); | |
72 | ddl = (GetPrevDDLNumber() < 0 ? UINT_MAX: GetPrevDDLNumber()); | |
73 | len = l+1; // Need to add one - l points to last valid index | |
74 | last = signal; | |
75 | break; | |
76 | } | |
77 | signal = GetSignal(); | |
78 | if (GetHWAddress() != GetPrevHWAddress() && GetPrevHWAddress() >= 0) { | |
79 | AliFMDDebug(15, ("New hardware address, was 0x%x, now 0x%x", | |
80 | GetPrevHWAddress(), GetHWAddress())); | |
81 | addr = GetPrevHWAddress(); | |
82 | ddl = (GetPrevDDLNumber() < 0 ? UINT_MAX : GetPrevDDLNumber()); | |
83 | len = l+1; // Need to add one - l points to last valid index | |
84 | last = signal; | |
85 | break; | |
86 | } | |
87 | } | |
88 | // Sanity check - if the total bunch length is less than 1, then | |
89 | // read until we get the next bunch. | |
90 | Int_t b = GetTimeLength(); | |
91 | if (b < 1) { | |
92 | AliWarning(Form("Bunch length %0d is less than 0 for " | |
93 | "DDL %4d address 0x%03x", | |
94 | b, ddl, addr)); | |
95 | last = 0xFFFF; | |
96 | continue; | |
97 | } | |
98 | ||
99 | // Sanity check - if the current time is less than 0, then read | |
100 | // until we get a new bunch. | |
101 | Int_t t = GetTime(); | |
102 | if (t < 0) { | |
103 | AliWarning(Form("Time %0d is less than 0 for DDL %4d address 0x%03x", | |
104 | t, ddl, addr)); | |
105 | last = 0xFFFF; | |
106 | continue; | |
107 | } | |
108 | l = TMath::Max(l, t); | |
109 | data[t] = signal; | |
110 | last = 0xFFFF; | |
111 | #if 0 | |
112 | AliFMDDebug(signal > 512 ? 1 : 0, ("Signal @ %d (%d) is %d", | |
113 | time, t, data[t])); | |
114 | #endif | |
115 | } while (next); | |
116 | return next; | |
117 | } | |
118 | ||
119 | ||
120 | //_____________________________________________________________________________ | |
121 | // | |
122 | // EOF | |
123 | // |