3 /**************************************************************************
4 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
6 * Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
7 * Timm Steinbeck <timm@kip.uni-heidelberg.de> *
8 * for The ALICE Off-line Project. *
10 * Permission to use, copy, modify and distribute this software and its *
11 * documentation strictly for non-commercial purposes is hereby granted *
12 * without fee, provided that the above copyright notice appears in all *
13 * copies and that both the copyright notice and this permission notice *
14 * appear in the supporting documentation. The authors make no claims *
15 * about the suitability of this software for any purpose. It is *
16 * provided "as is" without express or implied warranty. *
17 **************************************************************************/
19 ///////////////////////////////////////////////////////////////////////////////
21 // a dummy processing component for the HLT //
23 ///////////////////////////////////////////////////////////////////////////////
29 #include "AliHLTDummyComponent.h"
33 // this is a global object used for automatic component registration, do not use this
34 AliHLTDummyComponent gAliHLTDummyComponent;
36 ClassImp(AliHLTDummyComponent)
38 AliHLTDummyComponent::AliHLTDummyComponent()
40 fOutputPercentage = 100; // By default we copy to the output exactly what we got as input
43 AliHLTDummyComponent::~AliHLTDummyComponent()
47 const char* AliHLTDummyComponent::GetComponentID()
49 return "Dummy"; // The ID of this component
52 void AliHLTDummyComponent::GetInputDataTypes( vector<AliHLTComponent_DataType>& list)
54 list.clear(); // We do not have any requirements for our input data type(s).
57 AliHLTComponent_DataType AliHLTDummyComponent::GetOutputDataType()
59 return (AliHLTComponent_DataType){ sizeof(AliHLTComponent_DataType), {'D','U','M','M','Y',' ',' ',' '},{'D','U','M','Y'}};
62 void AliHLTDummyComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
65 inputMultiplier = ((double)fOutputPercentage)/100.0;
70 // Spawn function, return new instance of this class
71 AliHLTComponent* AliHLTDummyComponent::Spawn()
73 return new AliHLTDummyComponent;
76 int AliHLTDummyComponent::DoInit( int argc, const char** argv )
78 // perform initialization. We check whether our relative output size is specified in the arguments.
79 fOutputPercentage = 100;
84 Logging( kHLTLogDebug, "HLT::Dummy::DoInit", "Arguments", "argv[%d] == %s", i, argv[i] );
85 if ( !strcmp( argv[i], "output_percentage" ) )
89 Logging(kHLTLogError, "HLT::Dummy::DoInit", "Missing Argument", "Missing output_percentage parameter");
92 Logging( kHLTLogDebug, "HLT::Dummy::DoInit", "Arguments", "argv[%d+1] == %s", i, argv[i+1] );
93 fOutputPercentage = strtoul( argv[i+1], &cpErr, 0 );
96 Logging(kHLTLogError, "HLT::Dummy::DoInit", "Wrong Argument", "Cannot convert output_percentage parameter '%s'", argv[i+1] );
99 Logging( kHLTLogInfo, "HLT::Dummy::DoInit", "Output percentage set", "Output percentage set to %lu %%", fOutputPercentage );
103 Logging(kHLTLogError, "HLT::Dummy::DoInit", "Unknown Option", "Unknown option '%s'", argv[i] );
109 int AliHLTDummyComponent::DoDeinit()
114 int AliHLTDummyComponent::DoEvent( const AliHLTComponent_EventData& evtData, const AliHLTComponent_BlockData* blocks,
115 AliHLTComponent_TriggerData& trigData, AliHLTUInt8_t* outputPtr,
116 AliHLTUInt32_t& size, vector<AliHLTComponent_BlockData>& outputBlocks )
118 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Output percentage set", "Output percentage set to %lu %%", fOutputPercentage );
120 unsigned long totalSize = 0;
121 // Loop over all input blocks in the event
122 for ( unsigned long n = 0; n < evtData.fBlockCnt; n++ )
124 // Align the beginning of this block to the required value.
125 if ( totalSize % kAliHLTBlockAlignment )
126 totalSize += kAliHLTBlockAlignment-(totalSize % kAliHLTBlockAlignment);
127 if ( totalSize > size )
129 // Determine the size we should use for the output for this block (the input block's size times the relative output size)
130 unsigned long mySize = (blocks[n].fSize * fOutputPercentage) / 100;
131 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "mySize set (1)", "mySize == %lu B - blocks[%lu].fSize == %lu - fOutputPercentage == %lu",
132 mySize, n, blocks[n].fSize, fOutputPercentage );
133 // Check how much space we have left and adapt this output block's size accordingly.
134 if ( totalSize + mySize > size )
135 mySize = size-totalSize;
136 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "mySize set (2)", "mySize == %lu B - totalSize == %lu - size == %lu",
137 mySize, totalSize, size );
139 continue; // No room left to write a further block.
140 // Now copy the input block
141 unsigned long copied = 0;
142 // First copy all full multiples of the input block
143 while ( copied+blocks[n].fSize <= mySize )
145 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copying", "Copying %lu B - Copied: %lu B - totalSize: %lu B",
146 blocks[n].fSize, copied, totalSize );
147 memcpy( outputPtr+totalSize+copied, blocks[n].fPtr, blocks[n].fSize );
148 copied += blocks[n].fSize;
150 // And the copy the remaining fragment of the block
151 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copying", "Copying %lu B - Copied: %lu B - totalSize: %lu B",
152 mySize-copied, copied, totalSize );
153 memcpy( outputPtr+totalSize+copied, blocks[n].fPtr, mySize-copied );
154 Logging( kHLTLogInfo, "HLT::Dummy::DoEvent", "Copied", "Copied: %lu B - totalSize: %lu B",
156 // Fill a block data structure for our output block.
157 AliHLTComponent_BlockData ob;
158 // Let the structure be filled with the default values.
159 // This takes care of setting the shared memory and data type values to default values,
160 // so that they can be filled in by the calling code.
162 // This block's start (offset) is after all other blocks written so far
163 ob.fOffset = totalSize;
164 // the size of this block's data.
166 // The specification of the data is copied from the input block.
167 ob.fSpecification = blocks[n].fSpecification;
168 // The data type is set automatically to the component's specified output data type.
169 // Place this block into the list of output blocks
170 outputBlocks.push_back( ob );
171 // Increase the total amount of data written so far to our output memory
174 // Finally we set the total size of output memory we consumed.