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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), |
58 | fEventBuffer(new AliVEvent*[size]) | |
59 | { | |
60 | // Default constructor | |
61 | for (Int_t i = 0; i < size; i++) | |
62 | if (fFormat == 1) { | |
63 | fEventBuffer[i] = new AliAODEvent(); | |
64 | } else if (fFormat == 0) { | |
65 | fEventBuffer[i] = new AliESDEvent(); | |
66 | } else{ | |
67 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
68 | } | |
69 | } | |
70 | ||
71 | //______________________________________________________________________________ | |
72 | AliMultiEventInputHandler::AliMultiEventInputHandler(const char* name, const char* title, Int_t size, Int_t format): | |
73 | AliInputEventHandler(name, title), | |
74 | fBufferSize(size), | |
75 | fFormat(format), | |
76 | fNBuffered(0), | |
77 | fIndex(0), | |
78 | fCurrentBin(0), | |
fab17817 | 79 | fEventPool(0), |
80 | fEventBuffer(new AliVEvent*[size]) | |
81 | { | |
82 | // Constructor | |
83 | for (Int_t i = 0; i < size; i++) | |
84 | if (fFormat == 1) { | |
85 | fEventBuffer[i] = new AliAODEvent(); | |
86 | } else if (fFormat == 0) { | |
87 | fEventBuffer[i] = new AliESDEvent(); | |
88 | } else{ | |
89 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
90 | } | |
91 | } | |
92 | ||
93 | //______________________________________________________________________________ | |
94 | AliMultiEventInputHandler::~AliMultiEventInputHandler() | |
95 | { | |
96 | // Destructor | |
97 | } | |
98 | ||
99 | Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/) | |
100 | { | |
101 | // Initialisation necessary for each new tree | |
102 | fTree = tree; | |
85c82302 | 103 | fTree->GetEntry(0); |
104 | ||
fab17817 | 105 | if (!fTree) return kFALSE; |
106 | // Get pointer to AOD event | |
107 | fEventBuffer[0]->ReadFromTree(fTree, ""); | |
108 | fIndex = 0; | |
109 | fNBuffered = 1; | |
110 | return kTRUE; | |
111 | } | |
112 | ||
113 | Bool_t AliMultiEventInputHandler::BeginEvent(Long64_t /*entry*/) | |
114 | { | |
115 | // Actions before analysis of each event | |
116 | // | |
117 | // Reset the number of events buffered for this bin to 0 | |
118 | if (fCurrentBin != (fEventPool->BinNumber())) { | |
119 | fCurrentBin = fEventPool->BinNumber(); | |
120 | fNBuffered = 0; | |
121 | } | |
122 | return kTRUE; | |
123 | } | |
124 | ||
125 | Bool_t AliMultiEventInputHandler::FinishEvent() | |
126 | { | |
127 | // | |
128 | // Connect the next event in the buffer to the tree | |
129 | fIndex++; | |
130 | ||
131 | fIndex %= fBufferSize; | |
132 | AliInfo(Form("Connecting buffer entry %5d", fIndex)); | |
133 | ||
134 | fEventBuffer[fIndex]->ReadFromTree(fTree, "reconnect"); | |
135 | ||
136 | fNBuffered++; | |
137 | if (fNBuffered > fBufferSize) fNBuffered = fBufferSize; | |
138 | ||
139 | return (kTRUE); | |
140 | } | |
141 | ||
142 | ||
143 | AliVEvent* AliMultiEventInputHandler::GetEvent(Int_t iev) const | |
144 | { | |
145 | // Get event number iev from buffer | |
146 | if ((iev < 0) || (iev >= fBufferSize)) | |
147 | { | |
148 | AliWarning(Form("Event number out of range: %10d", iev)); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | iev = fIndex - (fBufferSize - 1 - iev); | |
153 | if (iev < 0) iev += fBufferSize; | |
154 | AliInfo(Form("Event index in buffer is %5d", iev)); | |
155 | return (fEventBuffer[iev]); | |
156 | } | |
157 |