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71d7c760 | 1 | // $Id$ |
2 | ||
3 | /************************************************************************** | |
9be2600f | 4 | * This file is property of and copyright by the ALICE HLT Project * |
5 | * ALICE Experiment at CERN, All rights reserved. * | |
71d7c760 | 6 | * * |
9be2600f | 7 | * Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> * |
8 | * Timm Steinbeck <timm@kip.uni-heidelberg.de> * | |
9 | * for The ALICE HLT Project. * | |
71d7c760 | 10 | * * |
11 | * Permission to use, copy, modify and distribute this software and its * | |
12 | * documentation strictly for non-commercial purposes is hereby granted * | |
13 | * without fee, provided that the above copyright notice appears in all * | |
14 | * copies and that both the copyright notice and this permission notice * | |
15 | * appear in the supporting documentation. The authors make no claims * | |
16 | * about the suitability of this software for any purpose. It is * | |
17 | * provided "as is" without express or implied warranty. * | |
18 | **************************************************************************/ | |
19 | ||
b22e91eb | 20 | /** @file AliHLTDummyComponent.cxx |
21 | @author Timm Steinbeck, Matthias Richter | |
22 | @date | |
23 | @brief A dummy processing component for the HLT. */ | |
71d7c760 | 24 | |
25 | #if __GNUC__ >= 3 | |
26 | using namespace std; | |
27 | #endif | |
28 | ||
2d7ff710 | 29 | #include "AliHLTSystem.h" |
71d7c760 | 30 | #include "AliHLTDummyComponent.h" |
66043029 | 31 | #include "AliHLTDefinitions.h" |
71d7c760 | 32 | #include <stdlib.h> |
33 | #include <errno.h> | |
34 | ||
35 | // this is a global object used for automatic component registration, do not use this | |
36 | AliHLTDummyComponent gAliHLTDummyComponent; | |
37 | ||
38 | ClassImp(AliHLTDummyComponent) | |
39 | ||
40 | AliHLTDummyComponent::AliHLTDummyComponent() | |
2d7ff710 | 41 | : |
42 | fOutputPercentage(100) // By default we copy to the output exactly what we got as input | |
71d7c760 | 43 | { |
71d7c760 | 44 | } |
45 | ||
46 | AliHLTDummyComponent::~AliHLTDummyComponent() | |
47 | { | |
48 | } | |
49 | ||
50 | const char* AliHLTDummyComponent::GetComponentID() | |
51 | { | |
52 | return "Dummy"; // The ID of this component | |
53 | } | |
54 | ||
8ede8717 | 55 | void AliHLTDummyComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list) |
71d7c760 | 56 | { |
9ce4bf4a | 57 | /* in order to be backward compatible we have to keep the old code, at |
58 | * least for a while. Remember to use the new const kAliHLTVoidDataType | |
59 | * if you are using a more recent AliRoot version (from Jan 07) | |
60 | list.push_back(kAliHLTAnyDataType); // We do not have any requirements for our input data type(s). | |
61 | */ | |
8b250b0e | 62 | |
63 | AliHLTComponentDataType dt = | |
64 | { sizeof(AliHLTComponentDataType), | |
65 | {'*','*','*','*','*','*','*','\0'}, | |
66 | {'*','*','*','\0'}}; | |
67 | list.push_back(dt); | |
71d7c760 | 68 | } |
69 | ||
8ede8717 | 70 | AliHLTComponentDataType AliHLTDummyComponent::GetOutputDataType() |
71d7c760 | 71 | { |
9ce4bf4a | 72 | /* in order to be backward compatible we have to keep the old code, at |
73 | * least for a while. Remember to use the new const kAliHLTVoidDataType | |
74 | * if you are using a more recent AliRoot version (from Jan 07) | |
75 | return kAliHLTVoidDataType; | |
76 | */ | |
8b250b0e | 77 | AliHLTComponentDataType dt = |
78 | { sizeof(AliHLTComponentDataType), | |
79 | {'\0','\0','\0','0','\0','\0','\0','\0'}, | |
80 | {'\0','\0','\0','\0'}}; | |
81 | return dt; | |
71d7c760 | 82 | } |
83 | ||
84 | void AliHLTDummyComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier ) | |
85 | { | |
86 | constBase = 0; | |
87 | inputMultiplier = ((double)fOutputPercentage)/100.0; | |
88 | } | |
89 | ||
90 | ||
91 | ||
92 | // Spawn function, return new instance of this class | |
93 | AliHLTComponent* AliHLTDummyComponent::Spawn() | |
94 | { | |
95 | return new AliHLTDummyComponent; | |
2d7ff710 | 96 | } |
71d7c760 | 97 | |
98 | int AliHLTDummyComponent::DoInit( int argc, const char** argv ) | |
99 | { | |
100 | // perform initialization. We check whether our relative output size is specified in the arguments. | |
101 | fOutputPercentage = 100; | |
102 | int i = 0; | |
103 | char* cpErr; | |
104 | while ( i < argc ) | |
105 | { | |
106 | Logging( kHLTLogDebug, "HLT::Dummy::DoInit", "Arguments", "argv[%d] == %s", i, argv[i] ); | |
107 | if ( !strcmp( argv[i], "output_percentage" ) ) | |
108 | { | |
109 | if ( i+1>=argc ) | |
110 | { | |
111 | Logging(kHLTLogError, "HLT::Dummy::DoInit", "Missing Argument", "Missing output_percentage parameter"); | |
112 | return ENOTSUP; | |
113 | } | |
114 | Logging( kHLTLogDebug, "HLT::Dummy::DoInit", "Arguments", "argv[%d+1] == %s", i, argv[i+1] ); | |
115 | fOutputPercentage = strtoul( argv[i+1], &cpErr, 0 ); | |
116 | if ( *cpErr ) | |
117 | { | |
118 | Logging(kHLTLogError, "HLT::Dummy::DoInit", "Wrong Argument", "Cannot convert output_percentage parameter '%s'", argv[i+1] ); | |
119 | return EINVAL; | |
120 | } | |
121 | Logging( kHLTLogInfo, "HLT::Dummy::DoInit", "Output percentage set", "Output percentage set to %lu %%", fOutputPercentage ); | |
122 | i += 2; | |
123 | continue; | |
124 | } | |
125 | Logging(kHLTLogError, "HLT::Dummy::DoInit", "Unknown Option", "Unknown option '%s'", argv[i] ); | |
126 | return EINVAL; | |
127 | } | |
128 | return 0; | |
129 | } | |
130 | ||
131 | int AliHLTDummyComponent::DoDeinit() | |
132 | { | |
133 | return 0; | |
134 | } | |
135 | ||
8ede8717 | 136 | int AliHLTDummyComponent::DoEvent( const AliHLTComponentEventData& evtData, const AliHLTComponentBlockData* blocks, |
137 | AliHLTComponentTriggerData& trigData, AliHLTUInt8_t* outputPtr, | |
138 | AliHLTUInt32_t& size, vector<AliHLTComponentBlockData>& outputBlocks ) | |
71d7c760 | 139 | { |
140 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Output percentage set", "Output percentage set to %lu %%", fOutputPercentage ); | |
141 | // Process an event | |
142 | unsigned long totalSize = 0; | |
143 | // Loop over all input blocks in the event | |
144 | for ( unsigned long n = 0; n < evtData.fBlockCnt; n++ ) | |
145 | { | |
146 | // Align the beginning of this block to the required value. | |
147 | if ( totalSize % kAliHLTBlockAlignment ) | |
148 | totalSize += kAliHLTBlockAlignment-(totalSize % kAliHLTBlockAlignment); | |
149 | if ( totalSize > size ) | |
150 | break; | |
151 | // Determine the size we should use for the output for this block (the input block's size times the relative output size) | |
152 | unsigned long mySize = (blocks[n].fSize * fOutputPercentage) / 100; | |
153 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "mySize set (1)", "mySize == %lu B - blocks[%lu].fSize == %lu - fOutputPercentage == %lu", | |
154 | mySize, n, blocks[n].fSize, fOutputPercentage ); | |
155 | // Check how much space we have left and adapt this output block's size accordingly. | |
156 | if ( totalSize + mySize > size ) | |
157 | mySize = size-totalSize; | |
158 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "mySize set (2)", "mySize == %lu B - totalSize == %lu - size == %lu", | |
159 | mySize, totalSize, size ); | |
160 | if ( mySize<=0 ) | |
161 | continue; // No room left to write a further block. | |
162 | // Now copy the input block | |
163 | unsigned long copied = 0; | |
164 | // First copy all full multiples of the input block | |
165 | while ( copied+blocks[n].fSize <= mySize ) | |
166 | { | |
167 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copying", "Copying %lu B - Copied: %lu B - totalSize: %lu B", | |
168 | blocks[n].fSize, copied, totalSize ); | |
169 | memcpy( outputPtr+totalSize+copied, blocks[n].fPtr, blocks[n].fSize ); | |
170 | copied += blocks[n].fSize; | |
171 | } | |
172 | // And the copy the remaining fragment of the block | |
173 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copying", "Copying %lu B - Copied: %lu B - totalSize: %lu B", | |
174 | mySize-copied, copied, totalSize ); | |
175 | memcpy( outputPtr+totalSize+copied, blocks[n].fPtr, mySize-copied ); | |
176 | Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copied", "Copied: %lu B - totalSize: %lu B", | |
177 | copied, totalSize ); | |
178 | // Fill a block data structure for our output block. | |
8ede8717 | 179 | AliHLTComponentBlockData ob; |
71d7c760 | 180 | // Let the structure be filled with the default values. |
181 | // This takes care of setting the shared memory and data type values to default values, | |
182 | // so that they can be filled in by the calling code. | |
183 | FillBlockData( ob ); | |
184 | // This block's start (offset) is after all other blocks written so far | |
185 | ob.fOffset = totalSize; | |
186 | // the size of this block's data. | |
187 | ob.fSize = mySize; | |
188 | // The specification of the data is copied from the input block. | |
189 | ob.fSpecification = blocks[n].fSpecification; | |
190 | // The data type is set automatically to the component's specified output data type. | |
191 | // Place this block into the list of output blocks | |
192 | outputBlocks.push_back( ob ); | |
193 | // Increase the total amount of data written so far to our output memory | |
194 | totalSize += mySize; | |
195 | } | |
196 | // Finally we set the total size of output memory we consumed. | |
197 | size = totalSize; | |
198 | return 0; | |
199 | } |