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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), | |
43 | fTree(0), | |
44 | fEventPool(0), | |
45 | fEventBuffer(0) | |
46 | { | |
47 | // Default constructor | |
48 | } | |
49 | ||
50 | //______________________________________________________________________________ | |
51 | AliMultiEventInputHandler::AliMultiEventInputHandler(Int_t size, Int_t format) : | |
52 | AliInputEventHandler(), | |
53 | fBufferSize(size), | |
54 | fFormat(format), | |
55 | fNBuffered(0), | |
56 | fIndex(0), | |
57 | fCurrentBin(0), | |
58 | fTree(0), | |
59 | fEventPool(0), | |
60 | fEventBuffer(new AliVEvent*[size]) | |
61 | { | |
62 | // Default constructor | |
63 | for (Int_t i = 0; i < size; i++) | |
64 | if (fFormat == 1) { | |
65 | fEventBuffer[i] = new AliAODEvent(); | |
66 | } else if (fFormat == 0) { | |
67 | fEventBuffer[i] = new AliESDEvent(); | |
68 | } else{ | |
69 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
70 | } | |
71 | } | |
72 | ||
73 | //______________________________________________________________________________ | |
74 | AliMultiEventInputHandler::AliMultiEventInputHandler(const char* name, const char* title, Int_t size, Int_t format): | |
75 | AliInputEventHandler(name, title), | |
76 | fBufferSize(size), | |
77 | fFormat(format), | |
78 | fNBuffered(0), | |
79 | fIndex(0), | |
80 | fCurrentBin(0), | |
81 | fTree(0), | |
82 | fEventPool(0), | |
83 | fEventBuffer(new AliVEvent*[size]) | |
84 | { | |
85 | // Constructor | |
86 | for (Int_t i = 0; i < size; i++) | |
87 | if (fFormat == 1) { | |
88 | fEventBuffer[i] = new AliAODEvent(); | |
89 | } else if (fFormat == 0) { | |
90 | fEventBuffer[i] = new AliESDEvent(); | |
91 | } else{ | |
92 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
93 | } | |
94 | } | |
95 | ||
96 | //______________________________________________________________________________ | |
97 | AliMultiEventInputHandler::~AliMultiEventInputHandler() | |
98 | { | |
99 | // Destructor | |
100 | } | |
101 | ||
102 | Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/) | |
103 | { | |
104 | // Initialisation necessary for each new tree | |
105 | fTree = tree; | |
106 | if (!fTree) return kFALSE; | |
107 | // Get pointer to AOD event | |
108 | fEventBuffer[0]->ReadFromTree(fTree, ""); | |
109 | fIndex = 0; | |
110 | fNBuffered = 1; | |
111 | return kTRUE; | |
112 | } | |
113 | ||
114 | Bool_t AliMultiEventInputHandler::BeginEvent(Long64_t /*entry*/) | |
115 | { | |
116 | // Actions before analysis of each event | |
117 | // | |
118 | // Reset the number of events buffered for this bin to 0 | |
119 | if (fCurrentBin != (fEventPool->BinNumber())) { | |
120 | fCurrentBin = fEventPool->BinNumber(); | |
121 | fNBuffered = 0; | |
122 | } | |
123 | return kTRUE; | |
124 | } | |
125 | ||
126 | Bool_t AliMultiEventInputHandler::FinishEvent() | |
127 | { | |
128 | // | |
129 | // Connect the next event in the buffer to the tree | |
130 | fIndex++; | |
131 | ||
132 | fIndex %= fBufferSize; | |
133 | AliInfo(Form("Connecting buffer entry %5d", fIndex)); | |
134 | ||
135 | fEventBuffer[fIndex]->ReadFromTree(fTree, "reconnect"); | |
136 | ||
137 | fNBuffered++; | |
138 | if (fNBuffered > fBufferSize) fNBuffered = fBufferSize; | |
139 | ||
140 | return (kTRUE); | |
141 | } | |
142 | ||
143 | ||
144 | AliVEvent* AliMultiEventInputHandler::GetEvent(Int_t iev) const | |
145 | { | |
146 | // Get event number iev from buffer | |
147 | if ((iev < 0) || (iev >= fBufferSize)) | |
148 | { | |
149 | AliWarning(Form("Event number out of range: %10d", iev)); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | iev = fIndex - (fBufferSize - 1 - iev); | |
154 | if (iev < 0) iev += fBufferSize; | |
155 | AliInfo(Form("Event index in buffer is %5d", iev)); | |
156 | return (fEventBuffer[iev]); | |
157 | } | |
158 |