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3e820254 | 1 | // @(#) $Id$ |
2 | ||
3 | #ifndef ALIHLTRECONSTRUCTOR_H | |
4 | #define ALIHLTRECONSTRUCTOR_H | |
c5123824 | 5 | //* This file is property of and copyright by the ALICE HLT Project * |
6 | //* ALICE Experiment at CERN, All rights reserved. * | |
7 | //* See cxx source for full Copyright notice * | |
3e820254 | 8 | |
3a7c0444 | 9 | /** @file AliHLTReconstructor.h |
c534985b | 10 | @author Matthias Richter |
11 | @date | |
12 | @brief Binding class for HLT simulation in AliRoot | |
c5123824 | 13 | */ |
c534985b | 14 | |
3e820254 | 15 | #include "AliReconstructor.h" |
a3ef3c1d | 16 | #include "AliHLTReconstructorBase.h" |
3e820254 | 17 | |
18 | class AliHLTSystem; | |
19 | class AliRawReader; | |
20 | class AliESDEvent; | |
c5123824 | 21 | class AliHLTOUT; |
22 | class AliHLTEsdManager; | |
9d4cf2ab | 23 | /** |
24 | * @defgroup alihlt_aliroot_reconstruction AliRoot reconstruction. | |
25 | * | |
26 | * Like all other ALICE detectors, HLT utilizes the AliReconstruction interface | |
27 | * to implement a plugin for the AliRoot reconstruction. The reconstructor can be | |
28 | * used to | |
29 | * - run HLT analysis chains in the AliRoot reconstruction <br> | |
30 | * This option is mainly intended for the development and debugging cycle. HLT | |
31 | * chains can be defined by means of AliHLTConfiguration and can be run either | |
32 | * stand-alone or embedded into the AliReconstruction cycle. | |
33 | * - run the default analysis chains <br> | |
34 | * HLT modules can define default analysis chains to be run during AliRoot | |
35 | * reconstruction. | |
36 | * - handle the HLTOUT data<br> | |
37 | * The HLT output stream contains multiple data blocks produced by the various | |
38 | * components of the HLT chain. Each block might need different and even | |
39 | * detector specific processing, like e.g. the processing of ESD objects or the | |
40 | * handling of compressed data. | |
41 | * | |
42 | * The AliHLTReconstructor provides the main interface for this group. | |
43 | * @ingroup alihlt_system | |
44 | */ | |
3e820254 | 45 | |
46 | /** | |
47 | * @class AliHLTReconstructor | |
9d4cf2ab | 48 | * AliRoot event reconstruction plug-in for the HLT. |
3e820254 | 49 | * The AliHLTReconstructor holds an instance of the @ref AliHLTSystem |
50 | * steering class. The actual reconstruction depends on the loaded component | |
51 | * libraries. Each library must implement a module agent (@ref AliHLTModuleAgent) | |
52 | * in order to provide information on the supported features and the | |
53 | * configurations to be run. | |
54 | * | |
d1d1bbd7 | 55 | * The AliHLTReconstructor provides both the functionality to run customized |
56 | * analysis chains and the treatment of the HLTOUT data. | |
57 | * | |
58 | * @section sec_alihltreconstructor_options Options | |
3e820254 | 59 | * The default component libraries which are loaded through the initialization |
60dd5042 | 60 | * are determined by the @ref AliHLTSystem::fgkHLTDefaultLibs array. The library |
61 | * loading can be overridden by an option to the AliHLTReconstructor through the | |
3e820254 | 62 | * <tt>SetOption</tt> method of <tt>AliReconstruction</tt>, e.g. |
63 | * <pre> | |
64 | * AliReconstruction rec; | |
65 | * rec.SetOption("HLT", "libAliHLTSample.so"); | |
66 | * </pre> | |
67 | * will only load <tt>libAliHLTSample.so</tt> | |
68 | * | |
69 | * Optional arguments:<br> | |
1ac82ce6 | 70 | * <!-- NOTE: ignore the \li. <i> and </i>: it's just doxygen formatting --> |
3e820254 | 71 | * \li loglevel=<i>level</i><br> |
72 | * level can be a hex number encoding the @ref AliHLTComponentLogSeverity | |
73 | * \li alilog=off <br> | |
74 | * disables the logging of HLT log messages through <tt>AliLog</tt> <br> | |
75 | * | |
76 | * For further information on the AliRoot reconstruction refer to the AliRoot | |
77 | * documentation, namely <tt>AliReconstruction</tt>. | |
d1d1bbd7 | 78 | * |
79 | * @section sec_alihltreconstructor_chains Custom reconstruction chains | |
80 | * In order to run an HLT chain during the AliRoot reconstruction, a chain | |
81 | * configuration must be defined. This can be done by | |
82 | * - specifying a configuration macro defining a configuration macro and | |
83 | * the name of the chain as parameters | |
84 | * <pre> | |
85 | * rec.SetOption("HLT", "config=[macro.C] chains=[name]") | |
86 | * </pre> | |
87 | * - providing the configuration and the name by the module agent. | |
88 | * AliHLTModuleAgent and the functions AliHLTModuleAgent::CreateConfigurations | |
89 | * and AliHLTModuleAgent::GetReconstructionChains | |
90 | * | |
91 | * @section sec_alihltreconstructor_hltout Treatment of HLTOUT data. | |
92 | * The HLTOUT data is a collation of output blocks produced by the various | |
93 | * components running in an HLT chain. Typically its the output of the last | |
94 | * component(s) in the chain, or components specifically connected to the HLT | |
95 | * output. | |
96 | * | |
97 | * The treatment of the HLTOUT data blocks is implemented in handlers of type | |
98 | * AliHLTOUTHandler. The AliHLTModuleAgent of the module creates the appropriate | |
99 | * handler for a data block. | |
100 | * The data type of the individual blocks is set by the producer component and | |
101 | * specifies the nature of the data processing. There are 5 overall groups: | |
102 | * - output is in ESD format: | |
103 | * @ref sec_alihltreconstructor_hltout_esd | |
104 | * - data describes DDL raw format: | |
105 | * @ref sec_alihltreconstructor_hltout_rawreader | |
106 | * - pre-analyzed data to be fed into the normal reconstruction: | |
107 | * @ref sec_alihltreconstructor_hltout_rawstream | |
108 | * - data is fed into an analysis chain: | |
109 | * @ref sec_alihltreconstructor_hltout_chain | |
110 | * - detector specific handler: | |
111 | * @ref sec_alihltreconstructor_hltout_proprietary | |
112 | * | |
113 | * @subsection sec_alihltreconstructor_hltout_esd ESD HLTOUT data | |
9d4cf2ab | 114 | * The framework implements a standard handling of ESD data |
115 | * blocks of type ::kAliHLTDataTypeESDTree {ESD_TREE:ANY}. \em ANY can be | |
d1d1bbd7 | 116 | * any detector origin. Each ESD block contains the data of only one event, |
117 | * the ESDs are merged by the AliHLTEsdManager and written to files of the | |
833b3167 | 118 | * naming scheme AliHLT\em DET ESDs.root. The first ESD block is also copied |
d1d1bbd7 | 119 | * to the hltEsd provided by the AliReconstruction. This is a temporary |
120 | * solution as the handling and merging of HLT ESDs is under discussion. | |
121 | * At the time of writing (May 08) only the TPC HLT components produce ESD | |
122 | * blocks. | |
123 | * The module agent can provide a handler for multiple ESD data blocks, e.g. | |
124 | * for merging within one event prior to the writing. Instead of the individual | |
125 | * ESDs the one provided by the handler is passed to the AliHLTEsdManager. The | |
9d4cf2ab | 126 | * handler is of type \link AliHLTModuleAgent::AliHLTOUTHandlerType kEsd \endlink. |
d1d1bbd7 | 127 | * |
128 | * @subsection sec_alihltreconstructor_hltout_rawreader DDL raw HLTOUT data | |
129 | * The HLT can perform selective readout and produces a reduced amount of data | |
130 | * in the original raw ddl format. In order to feed this data from the HLTOUT | |
131 | * DDL links into the normal reconstruction, a handler of type | |
9d4cf2ab | 132 | * \link AliHLTModuleAgent::AliHLTOUTHandlerType kRawReader \endlink must be |
133 | * implemented and provided by the | |
d1d1bbd7 | 134 | * module agent. The handler has to derive the original equipment id from the |
135 | * data type and specification of the block. The offline reconstruction does | |
9d4cf2ab | 136 | * not need to be changed or adapted at all. See AliRawReaderHLT for details. |
d1d1bbd7 | 137 | * |
138 | * @subsection sec_alihltreconstructor_hltout_rawstream Preprocessed Raw HLTOUT data | |
9d4cf2ab | 139 | * Handlers of type \link AliHLTModuleAgent::AliHLTOUTHandlerType kRawStream \endlink |
140 | * are foreseen though at the time of writing (May 08) the | |
d1d1bbd7 | 141 | * concept is not fixed. Advanced data compression algorithms can produce a |
142 | * raw data format which is not convertible into the raw DDL data, e.g. lossy | |
143 | * compression techniques storing clusters parametrized regarding to tracks. A | |
144 | * specific RawStream is needed here since the data is detector specific and the | |
145 | * first stage of the offline reconstruction might need some adaptions. | |
146 | * | |
147 | * @subsection sec_alihltreconstructor_hltout_chain HLTOUT data fed into a chain | |
9d4cf2ab | 148 | * At the time of writing (May 08), handler type |
149 | * \link AliHLTModuleAgent::AliHLTOUTHandlerType kChain \endlink | |
d1d1bbd7 | 150 | * is foreseen but not yet implemented. Has to be discussed. |
151 | * | |
152 | * @subsection sec_alihltreconstructor_hltout_proprietary Proprietary HLTOUT data | |
9d4cf2ab | 153 | * This is a handler of proprietary detector data. Handlers of type |
154 | * \link AliHLTModuleAgent::AliHLTOUTHandlerType kProprietary \endlink | |
155 | * do not have any standard output to the framework. Data can be processed and | |
156 | * stored to files. | |
157 | * | |
158 | * @section sec_alihltreconstructor_helper Tools and helper functions | |
7ec2b0ab | 159 | * Some helper functions of the AliHLTReconstruction can be used in stand-alone |
160 | * mode. Remember to Init() the reconstructor. | |
161 | * <pre> | |
162 | * { | |
163 | * gSystem->Load("libHLTrec.so"); | |
164 | * AliHLTReconstructor rec; | |
165 | * rec.Init(); | |
166 | * // do something | |
167 | * } | |
168 | * </pre> | |
9d4cf2ab | 169 | * @subsection sec_alihltreconstructor_hltout_standalone Stand-alone HLTOUT processing |
170 | * - HLTOUT processing from a digit file: | |
171 | * <pre> | |
172 | * void ProcessHLTOUT(const char*, AliESDEvent*) const; | |
173 | * </pre> | |
174 | * - HLTOUT processing from an AliRawReader | |
175 | * <pre> | |
176 | * void ProcessHLTOUT(AliRawReader*, AliESDEvent*) const; | |
177 | * </pre> | |
d1d1bbd7 | 178 | * |
179 | * @ingroup alihlt_aliroot_reconstruction | |
9d4cf2ab | 180 | * @section sec_alihltreconstructor_members Class members |
3e820254 | 181 | */ |
a3ef3c1d | 182 | class AliHLTReconstructor: public AliReconstructor, public AliHLTReconstructorBase { |
3e820254 | 183 | public: |
032c5e5e | 184 | /** standard constructor */ |
3e820254 | 185 | AliHLTReconstructor(); |
032c5e5e | 186 | /** constructor */ |
187 | AliHLTReconstructor(const char* options); | |
3e820254 | 188 | /** destructor */ |
189 | virtual ~AliHLTReconstructor(); | |
190 | ||
191 | /** init the reconstructor */ | |
192 | void Init(); | |
193 | ||
032c5e5e | 194 | /** init the reconstructor */ |
195 | void Init(const char* options); | |
196 | ||
3e820254 | 197 | /** |
198 | * This Reconstructor function is not applicable for the AliHLTReconstructor | |
199 | * as it gets a detector specific digits tree. But HLT processes all detectors. | |
7f9ab840 | 200 | * Furthermore it's purely simulated data. <br> |
201 | * The function forwards to the default bahavior of AliReconstructor but gives | |
202 | * a warning if there were options set, i.e. the user runs customized | |
203 | * reconstruction. | |
c5123824 | 204 | * |
205 | * @note HLT reconstruction on simulated data is processed at the end of | |
206 | * simulation. <br> | |
3e820254 | 207 | */ |
7f9ab840 | 208 | void Reconstruct(TTree* digitsTree, TTree* clustersTree) const; |
3e820254 | 209 | |
210 | /** | |
211 | * Reconstruction from RAW data. | |
212 | * The rawReader holds data for all detectors and this version of Reconstruct | |
213 | * is thus applicable for the HLT. The clustersTree is just ignored. | |
214 | */ | |
215 | void Reconstruct(AliRawReader* rawReader, TTree* clustersTree) const; | |
216 | ||
217 | /** | |
c5123824 | 218 | * This function treats the simulated HLTOUT data. |
219 | * Opens a handler for simulated HLTOUT data and forwards to ::ProcessHLTOUT. | |
3e820254 | 220 | */ |
7f9ab840 | 221 | void FillESD(TTree* digitsTree, TTree* clustersTree, AliESDEvent* esd) const; |
3e820254 | 222 | |
223 | /** | |
c5123824 | 224 | * Process the raw HLTOUT data and fill ESD. |
225 | * Opens a handler for raw HLTOUT data and forwards to ::ProcessHLTOUT. | |
3e820254 | 226 | */ |
227 | void FillESD(AliRawReader* rawReader, TTree* clustersTree, AliESDEvent* esd) const; | |
228 | ||
c5123824 | 229 | /** |
230 | * Process HLTOUT data and fill ESD. | |
231 | * This is the final treatment of the HLTOUT data, either simulated or real. | |
232 | * HLTOUT data is stored in HOMER format, the AliHLTOUT object provides the interface | |
233 | * to the individual data blocks. | |
234 | * | |
235 | * During reconstruction (::Reconstruct), module or user defined chains can be | |
236 | * processed and may add additional data to the HLTOUT object. This data is then | |
237 | * treated in the same way. | |
238 | */ | |
239 | void ProcessHLTOUT(AliHLTOUT* pHLTOUT, AliESDEvent* esd) const; | |
240 | ||
032c5e5e | 241 | /** |
242 | * Process HLTOUT data. | |
243 | * Open digit file and process the HLTOUT digit data. | |
244 | * This function is mostly intended for debugging purposes and stand-alone | |
245 | * processing of the output from the simulation. Loops over all events. | |
246 | * @param digitFile path of the digit file | |
247 | * @param pEsd optional ESD to be filled | |
248 | */ | |
249 | void ProcessHLTOUT(const char* digitFile="HLT.Digits.root", AliESDEvent* pEsd=NULL) const; | |
250 | ||
251 | /** | |
252 | * Process HLTOUT data. | |
253 | * Process the HLTOUT from the raw reader. | |
254 | * This function is mostly intended for debugging purposes and stand-alone | |
255 | * processing of simulated or real raw data. | |
256 | * \em Note: Loops over all events, i.e. the current event of the the raw | |
257 | * reader will change. Not to be called inside the normal AliRoot processsing. | |
258 | * @param pRawReader raw reader instance | |
259 | * @param pEsd optional ESD to be filled | |
260 | */ | |
261 | void ProcessHLTOUT(AliRawReader* pRawReader, AliESDEvent* pEsd=NULL) const; | |
262 | ||
263 | /** | |
264 | * Print a short info about the HLTOUT content. | |
265 | */ | |
266 | void PrintHLTOUTContent(AliHLTOUT* pHLTOUT) const; | |
267 | ||
3e820254 | 268 | private: |
269 | /** copy constructor prohibited */ | |
270 | AliHLTReconstructor(const AliHLTReconstructor& src); | |
271 | /** assignment operator prohibited */ | |
272 | AliHLTReconstructor& operator=(const AliHLTReconstructor& src); | |
273 | ||
c5123824 | 274 | /** function pointer: processing of HLTOUT data */ |
275 | void* fFctProcessHLTOUT; //!transient | |
276 | ||
277 | /** ESD manger instance for this reconstruction */ | |
278 | AliHLTEsdManager* fpEsdManager; //!transient | |
279 | ||
280 | ClassDef(AliHLTReconstructor, 5) // class for the HLT reconstruction | |
281 | ||
3e820254 | 282 | }; |
283 | ||
284 | typedef AliHLTReconstructor AliL3Reconstructor; // for backward compatibility | |
285 | ||
286 | #endif |