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fab17817 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, 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 | // Event handler for multiple VEvent input. | |
20 | // This class handles multiple inputs for event mixing. | |
21 | // Author: Andreas Morsch, CERN | |
22 | //------------------------------------------------------------------------- | |
23 | ||
24 | #include "AliMultiEventInputHandler.h" | |
25 | #include "AliVEvent.h" | |
26 | #include "AliAODEvent.h" | |
27 | #include "AliESDEvent.h" | |
28 | #include "AliVEventPool.h" | |
29 | #include "AliLog.h" | |
30 | #include <TObjArray.h> | |
31 | #include <TTree.h> | |
32 | ||
33 | ||
34 | ClassImp(AliMultiEventInputHandler) | |
35 | ||
36 | AliMultiEventInputHandler::AliMultiEventInputHandler() : | |
37 | AliInputEventHandler(), | |
38 | fBufferSize(0), | |
39 | fFormat(1), | |
40 | fNBuffered(0), | |
41 | fIndex(0), | |
42 | fCurrentBin(0), | |
fab17817 | 43 | fEventPool(0), |
44 | fEventBuffer(0) | |
45 | { | |
46 | // Default constructor | |
47 | } | |
48 | ||
49 | //______________________________________________________________________________ | |
50 | AliMultiEventInputHandler::AliMultiEventInputHandler(Int_t size, Int_t format) : | |
51 | AliInputEventHandler(), | |
52 | fBufferSize(size), | |
53 | fFormat(format), | |
54 | fNBuffered(0), | |
55 | fIndex(0), | |
56 | fCurrentBin(0), | |
fab17817 | 57 | fEventPool(0), |
67b28e0a | 58 | fEventBuffer(0) |
fab17817 | 59 | { |
67b28e0a | 60 | // constructor |
fab17817 | 61 | } |
62 | ||
63 | //______________________________________________________________________________ | |
64 | AliMultiEventInputHandler::AliMultiEventInputHandler(const char* name, const char* title, Int_t size, Int_t format): | |
65 | AliInputEventHandler(name, title), | |
66 | fBufferSize(size), | |
67 | fFormat(format), | |
68 | fNBuffered(0), | |
69 | fIndex(0), | |
70 | fCurrentBin(0), | |
fab17817 | 71 | fEventPool(0), |
67b28e0a | 72 | fEventBuffer(0) |
fab17817 | 73 | { |
74 | // Constructor | |
67b28e0a | 75 | |
fab17817 | 76 | } |
77 | ||
78 | //______________________________________________________________________________ | |
79 | AliMultiEventInputHandler::~AliMultiEventInputHandler() | |
80 | { | |
81 | // Destructor | |
82 | } | |
83 | ||
84 | Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/) | |
85 | { | |
86 | // Initialisation necessary for each new tree | |
67b28e0a | 87 | if (!fEventBuffer) { |
88 | fEventBuffer = new AliVEvent*[fBufferSize]; | |
89 | ||
90 | for (Int_t i = 0; i < fBufferSize; i++) | |
91 | if (fFormat == 1) { | |
92 | fEventBuffer[i] = new AliAODEvent(); | |
93 | } else if (fFormat == 0) { | |
94 | fEventBuffer[i] = new AliESDEvent(); | |
95 | } else{ | |
96 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
97 | } | |
98 | } | |
99 | ||
100 | ||
fab17817 | 101 | fTree = tree; |
102 | if (!fTree) return kFALSE; | |
47482059 | 103 | for (Int_t i = 0; i < fBufferSize; i++) |
104 | fEventBuffer[i]->Clear(); | |
fab17817 | 105 | fIndex = 0; |
106 | fNBuffered = 1; | |
107 | return kTRUE; | |
108 | } | |
109 | ||
47482059 | 110 | |
111 | Bool_t AliMultiEventInputHandler::Notify(const char */*path*/) | |
112 | { | |
67b28e0a | 113 | // Connect to new tree |
114 | ||
115 | ||
588195ca | 116 | static Bool_t first = kTRUE; |
117 | ||
67b28e0a | 118 | |
588195ca | 119 | if (first) { |
120 | fEventBuffer[0]->ReadFromTree(fTree, ""); | |
121 | first = kFALSE; | |
122 | } else { | |
67b28e0a | 123 | fEventBuffer[0]->ReadFromTree(fTree, "reconnect"); |
588195ca | 124 | } |
125 | ||
67b28e0a | 126 | |
47482059 | 127 | return (kTRUE); |
128 | } | |
129 | ||
fab17817 | 130 | Bool_t AliMultiEventInputHandler::BeginEvent(Long64_t /*entry*/) |
131 | { | |
132 | // Actions before analysis of each event | |
133 | // | |
134 | // Reset the number of events buffered for this bin to 0 | |
135 | if (fCurrentBin != (fEventPool->BinNumber())) { | |
136 | fCurrentBin = fEventPool->BinNumber(); | |
137 | fNBuffered = 0; | |
138 | } | |
139 | return kTRUE; | |
140 | } | |
141 | ||
142 | Bool_t AliMultiEventInputHandler::FinishEvent() | |
143 | { | |
144 | // | |
145 | // Connect the next event in the buffer to the tree | |
146 | fIndex++; | |
147 | ||
148 | fIndex %= fBufferSize; | |
149 | AliInfo(Form("Connecting buffer entry %5d", fIndex)); | |
47482059 | 150 | fEventBuffer[fIndex]->Clear(); |
fab17817 | 151 | fEventBuffer[fIndex]->ReadFromTree(fTree, "reconnect"); |
152 | ||
153 | fNBuffered++; | |
154 | if (fNBuffered > fBufferSize) fNBuffered = fBufferSize; | |
155 | ||
156 | return (kTRUE); | |
157 | } | |
158 | ||
fab17817 | 159 | AliVEvent* AliMultiEventInputHandler::GetEvent(Int_t iev) const |
160 | { | |
161 | // Get event number iev from buffer | |
162 | if ((iev < 0) || (iev >= fBufferSize)) | |
163 | { | |
164 | AliWarning(Form("Event number out of range: %10d", iev)); | |
165 | return 0; | |
166 | } | |
167 | ||
168 | iev = fIndex - (fBufferSize - 1 - iev); | |
169 | if (iev < 0) iev += fBufferSize; | |
170 | AliInfo(Form("Event index in buffer is %5d", iev)); | |
171 | return (fEventBuffer[iev]); | |
172 | } | |
173 |