3 //**************************************************************************
4 //* This file is property of and copyright by the ALICE HLT Project *
5 //* ALICE Experiment at CERN, All rights reserved. *
7 //* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
8 //* for The ALICE HLT 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 /** @file AliHLTAltroChannelSelectorComponent.cxx
20 @author Matthias Richter
22 @brief A filter/selective readout component for Altro data.
25 // see header file for class documentation
27 // refer to README to build package
29 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
32 #include "AliHLTAltroChannelSelectorComponent.h"
33 #include "AliAltroDecoder.h"
34 #include "AliAltroData.h"
36 /** ROOT macro for the implementation of ROOT specific class methods */
37 ClassImp(AliHLTAltroChannelSelectorComponent)
39 AliHLTAltroChannelSelectorComponent::AliHLTAltroChannelSelectorComponent()
42 fSkipCorrupted(false),
45 // see header file for class documentation
47 // refer to README to build package
49 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
52 AliHLTAltroChannelSelectorComponent::~AliHLTAltroChannelSelectorComponent()
54 // see header file for class documentation
57 const char* AliHLTAltroChannelSelectorComponent::GetComponentID()
59 // see header file for class documentation
60 return "AltroChannelSelector";
63 void AliHLTAltroChannelSelectorComponent::GetInputDataTypes(AliHLTComponentDataTypeList& list)
65 // see header file for class documentation
67 list.push_back(kAliHLTDataTypeDDLRaw|kAliHLTDataOriginTPC);
68 list.push_back(kAliHLTDataTypeHwAddr16);
71 AliHLTComponentDataType AliHLTAltroChannelSelectorComponent::GetOutputDataType()
73 // see header file for class documentation
74 return kAliHLTDataTypeDDLRaw|kAliHLTDataOriginTPC;
77 void AliHLTAltroChannelSelectorComponent::GetOutputDataSize(unsigned long& constBase, double& inputMultiplier)
79 // see header file for class documentation
84 AliHLTComponent* AliHLTAltroChannelSelectorComponent::Spawn()
86 // see header file for class documentation
87 return new AliHLTAltroChannelSelectorComponent;
90 int AliHLTAltroChannelSelectorComponent::DoInit(int argc, const char** argv)
92 // see header file for class documentation
96 for (int i=0; i<argc && iResult>=0; i++) {
98 if (argument.IsNull()) continue;
101 if (argument.CompareTo("-skip-corrupted")==0) {
105 } else if (argument.CompareTo("-talkative")==0) {
108 HLTError("unknown argument %s", argument.Data());
114 HLTError("missing parameter for argument %s", argument.Data());
121 int AliHLTAltroChannelSelectorComponent::DoDeinit()
123 // see header file for class documentation
127 int AliHLTAltroChannelSelectorComponent::DoEvent(const AliHLTComponentEventData& evtData,
128 const AliHLTComponentBlockData* blocks,
129 AliHLTComponentTriggerData& /*trigData*/,
130 AliHLTUInt8_t* outputPtr,
131 AliHLTUInt32_t& size,
132 AliHLTComponentBlockDataList& outputBlocks )
134 // see header file for class documentation
136 const int cdhSize=32;
138 // process the DLL input
140 const AliHLTComponentBlockData* pDesc=NULL;
142 AliAltroDecoder* decoder=NULL;
143 for (pDesc=GetFirstInputBlock(kAliHLTDataTypeDDLRaw); pDesc!=NULL; pDesc=GetNextInputBlock(), blockno++) {
145 if (pDesc->fSize<=32) continue;
147 // search for the active pad information
148 AliHLTUInt16_t* pActiveHwAddressArray=NULL;
150 for (int i=0; i<(int)evtData.fBlockCnt; i++ ) {
151 // search for selection data of hw address type
152 // which matches the data specification of the block
153 if (blocks[i].fDataType==kAliHLTDataTypeHwAddr16 && blocks[i].fSpecification==pDesc->fSpecification) {
154 pActiveHwAddressArray=reinterpret_cast<AliHLTUInt16_t*>(blocks[i].fPtr);
155 iArraySize=blocks[i].fSize/sizeof(AliHLTUInt16_t);
159 if (pActiveHwAddressArray==NULL) {
160 HLTWarning("no block of type %s for specification 0x%08x available, data block unchanged",
161 DataType2Text(kAliHLTDataTypeHwAddr16).c_str(),
162 pDesc->fSpecification);
166 if (decoder) delete decoder;
167 decoder=new AliAltroDecoder;
168 if (decoder->SetMemory(reinterpret_cast<UChar_t*>(pDesc->fPtr), pDesc->fSize)<0) {
169 HLTWarning("corrupted data block: initialization of decoder failed for block: %s specification %#x size %d",
170 DataType2Text(pDesc->fDataType).c_str(), pDesc->fSpecification, pDesc->fSize);
173 if (decoder->Decode()) {
174 HLTDebug("init decoder %p size %d", pDesc->fPtr,pDesc->fSize);
176 HLTWarning("corrupted data block: decoding failed for raw data block: %s specification %#x size %d",
177 DataType2Text(pDesc->fDataType).c_str(), pDesc->fSpecification, pDesc->fSize);
182 int rcuTrailerLength=decoder->GetRCUTrailerSize();
183 if (rcuTrailerLength>pDesc->fSize-cdhSize) {
184 HLTWarning("corrupted data block: RCU trailer length exceeds buffer size");
189 // forward the whole block
190 outputBlocks.push_back(*pDesc);
198 AliHLTUInt32_t iOutputSize=0;
199 AliHLTUInt32_t iNofAltro40=0;
200 AliHLTUInt32_t iCapacity=size;
201 AliAltroData channel;
202 while (decoder->NextChannel(&channel) && iResult>=0) {
205 int hwAddress=channel.GetHadd();
207 for (active=0; active<iArraySize; active++) {
208 if (pActiveHwAddressArray[active]==(AliHLTUInt16_t)hwAddress) {
212 if (active>=iArraySize) {
213 HLTDebug("ALTRO block %#x (%d) discarded (inactive)", hwAddress, hwAddress);
217 // no of 10 bit words is without the fill words to fill complete 40 bit words
218 // in addition, align to complete 40 bit words (the '+3')
219 // also, the 5 bytes of the Altro trailer must be added to get the full size
220 int channelSize=((channel.GetDataSize()+3)/4)*5;
222 HLTDebug("ALTRO block hwAddress 0x%08x (%d) selected (active), size %d", hwAddress, hwAddress, channelSize);
223 if (iOutputSize==0) {
224 // first add the RCU trailer
225 AliHLTUInt8_t* pSrc=reinterpret_cast<AliHLTUInt8_t*>(pDesc->fPtr);
226 pSrc+=pDesc->fSize-rcuTrailerLength;
227 if ((iResult=CopyBlockToEnd(outputPtr, iCapacity, iOutputSize, pSrc, rcuTrailerLength))>=0) {
228 assert(iResult==rcuTrailerLength);
229 iOutputSize+=rcuTrailerLength;
231 HLTError("failed to write RCU trailer of length %d for block %d, too little space in output buffer?", rcuTrailerLength, blockno);
237 if ((iResult=decoder->CopyBackward(outputPtr, iCapacity-iOutputSize))>=0) {
238 if (channelSize == iResult) {
239 if (channelSize%5 == 0) {
240 iNofAltro40+=channelSize/5;
241 iOutputSize+=channelSize;
243 if (fTalkative) HLTWarning("corrupted ALTRO channel: incomplete 40 bit word");
248 if (fTalkative) HLTWarning("internal error: failed to copy full channel: %d out of %d bytes", iResult, channelSize);
253 if (fTalkative) HLTError("failed to write ALTRO channel of length %d for block %d", channelSize, blockno);
254 // corrupted channel, but keep going
262 // write the common data header
263 if ((iResult=CopyBlockToEnd(outputPtr, iCapacity, iOutputSize, pDesc->fPtr, cdhSize))>=0) {
264 assert(iResult==cdhSize);
265 iOutputSize+=cdhSize;
267 // set new length of the data block
268 AliHLTUInt32_t* pCdhSize=reinterpret_cast<AliHLTUInt32_t*>(outputPtr+iCapacity-iOutputSize);
269 *pCdhSize=iOutputSize;
271 // set number of Altro words
272 AliHLTUInt32_t* pNofAltro40=reinterpret_cast<AliHLTUInt32_t*>(outputPtr+iCapacity-rcuTrailerLength);
273 *pNofAltro40=iNofAltro40;
275 // insert block descriptor
276 AliHLTComponentBlockData bd;
278 bd.fOffset=iCapacity-iOutputSize;
279 bd.fSize=iOutputSize;
280 bd.fDataType=pDesc->fDataType;
281 bd.fSpecification=pDesc->fSpecification;
282 outputBlocks.push_back(bd);
283 iCapacity-=iOutputSize;
285 HLTError("failed to write CDH of length %d for block %d", cdhSize, blockno);
289 HLTInfo("data block %d (0x%08x): selected %d out of %d ALTRO channel(s), %d corrupted channels skipped", blockno, pDesc->fSpecification, iSelected, iTotal, iCorrupted);
291 if (decoder) delete decoder;
294 outputBlocks.clear();
297 // !!! do not change the size since the output buffer is filled from the end !!!
302 int AliHLTAltroChannelSelectorComponent::CopyBlockToEnd(AliHLTUInt8_t* pTgt, unsigned capacity, unsigned position, void* pSrc, unsigned size)
305 if (pTgt==NULL || pSrc==NULL) return -EINVAL;
306 if (capacity-position<size) return -ENOSPC;
308 memcpy(pTgt+(capacity-position-size), pSrc, size);