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. */
24 // see header file for class documentation
26 // refer to README to build package
28 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
31 #include "AliHLTAltroChannelSelectorComponent.h"
32 #include "AliAltroDecoder.h"
33 #include "AliAltroData.h"
35 /** ROOT macro for the implementation of ROOT specific class methods */
36 ClassImp(AliHLTAltroChannelSelectorComponent)
38 AliHLTAltroChannelSelectorComponent::AliHLTAltroChannelSelectorComponent()
41 fSkipCorrupted(false),
44 // see header file for class documentation
46 // refer to README to build package
48 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
51 AliHLTAltroChannelSelectorComponent::~AliHLTAltroChannelSelectorComponent()
53 // see header file for class documentation
56 const char* AliHLTAltroChannelSelectorComponent::GetComponentID()
58 // see header file for class documentation
59 return "AltroChannelSelector";
62 void AliHLTAltroChannelSelectorComponent::GetInputDataTypes(AliHLTComponentDataTypeList& list)
64 // see header file for class documentation
66 list.push_back(kAliHLTDataTypeDDLRaw|kAliHLTDataOriginTPC);
67 list.push_back(kAliHLTDataTypeHwAddr16);
70 AliHLTComponentDataType AliHLTAltroChannelSelectorComponent::GetOutputDataType()
72 // see header file for class documentation
73 return kAliHLTDataTypeDDLRaw|kAliHLTDataOriginTPC;
76 void AliHLTAltroChannelSelectorComponent::GetOutputDataSize(unsigned long& constBase, double& inputMultiplier)
78 // see header file for class documentation
83 AliHLTComponent* AliHLTAltroChannelSelectorComponent::Spawn()
85 // see header file for class documentation
86 return new AliHLTAltroChannelSelectorComponent;
89 int AliHLTAltroChannelSelectorComponent::DoInit(int argc, const char** argv)
91 // see header file for class documentation
95 for (int i=0; i<argc && iResult>=0; i++) {
97 if (argument.IsNull()) continue;
100 if (argument.CompareTo("-skip-corrupted")==0) {
104 } else if (argument.CompareTo("-talkative")==0) {
107 HLTError("unknown argument %s", argument.Data());
113 HLTError("missing parameter for argument %s", argument.Data());
120 int AliHLTAltroChannelSelectorComponent::DoDeinit()
122 // see header file for class documentation
126 int AliHLTAltroChannelSelectorComponent::DoEvent(const AliHLTComponentEventData& evtData,
127 const AliHLTComponentBlockData* blocks,
128 AliHLTComponentTriggerData& /*trigData*/,
129 AliHLTUInt8_t* outputPtr,
130 AliHLTUInt32_t& size,
131 AliHLTComponentBlockDataList& outputBlocks )
133 // see header file for class documentation
135 const int cdhSize=32;
137 // process the DLL input
139 const AliHLTComponentBlockData* pDesc=NULL;
141 AliAltroDecoder* decoder=NULL;
142 for (pDesc=GetFirstInputBlock(kAliHLTDataTypeDDLRaw); pDesc!=NULL; pDesc=GetNextInputBlock(), blockno++) {
145 // search for the active pad information
146 AliHLTUInt16_t* pActiveHwAddressArray=NULL;
148 for (int i=0; i<(int)evtData.fBlockCnt; i++ ) {
149 // search for selection data of hw address type
150 // which matches the data specification of the block
151 if (blocks[i].fDataType==kAliHLTDataTypeHwAddr16 && blocks[i].fSpecification==pDesc->fSpecification) {
152 pActiveHwAddressArray=reinterpret_cast<AliHLTUInt16_t*>(blocks[i].fPtr);
153 iArraySize=blocks[i].fSize/sizeof(AliHLTUInt16_t);
157 if (pActiveHwAddressArray==NULL) {
158 HLTWarning("no block of type %s for specification 0x%08x available, data block unchanged",
159 DataType2Text(kAliHLTDataTypeHwAddr16).c_str(),
160 pDesc->fSpecification);
164 if (decoder) delete decoder;
165 decoder=new AliAltroDecoder;
166 if (decoder->SetMemory(reinterpret_cast<UChar_t*>(pDesc->fPtr), pDesc->fSize)<0) {
167 HLTWarning("corrupted data block: initialization of decoder failed for block: %s specification %#x size %d",
168 DataType2Text(pDesc->fDataType).c_str(), pDesc->fSpecification, pDesc->fSize);
171 if (decoder->Decode()) {
172 HLTDebug("init decoder %p size %d", pDesc->fPtr,pDesc->fSize);
174 HLTWarning("corrupted data block: decoding failed for raw data block: %s specification %#x size %d",
175 DataType2Text(pDesc->fDataType).c_str(), pDesc->fSpecification, pDesc->fSize);
180 int rcuTrailerLength=decoder->GetRCUTrailerSize();
181 if (rcuTrailerLength*sizeof(AliHLTUInt32_t)>pDesc->fSize-cdhSize) {
182 HLTWarning("corrupted data block: RCU trailer length exceeds buffer size");
187 // forward the whole block
188 outputBlocks.push_back(*pDesc);
196 AliHLTUInt32_t iOutputSize=0;
197 AliHLTUInt32_t iNofAltro40=0;
198 AliHLTUInt32_t iCapacity=size;
199 AliAltroData channel;
200 while (decoder->NextChannel(&channel) && iResult>=0) {
203 int hwAddress=channel.GetHadd();
205 for (active=0; active<iArraySize; active++) {
206 if (pActiveHwAddressArray[active]==(AliHLTUInt16_t)hwAddress) {
210 if (active>=iArraySize) {
211 HLTDebug("ALTRO block %#x (%d) discarded (inactive)", hwAddress, hwAddress);
215 // no of 10 bit words is without the fill words to fill complete 40 bit words
216 // in addition, align to complete 40 bit words (the '+3')
217 // also, the 5 bytes of the Altro trailer must be added to get the full size
218 int channelSize=((channel.GetDataSize()+3)/4)*5;
220 HLTDebug("ALTRO block hwAddress 0x%08x (%d) selected (active), size %d", hwAddress, hwAddress, channelSize);
221 if (iOutputSize==0) {
222 // first add the RCU trailer
223 AliHLTUInt8_t* pSrc=reinterpret_cast<AliHLTUInt8_t*>(pDesc->fPtr);
224 pSrc+=pDesc->fSize-rcuTrailerLength;
225 if ((iResult=CopyBlockToEnd(outputPtr, iCapacity, iOutputSize, pSrc, rcuTrailerLength))>=0) {
226 assert(iResult==rcuTrailerLength);
227 iOutputSize+=rcuTrailerLength;
229 HLTError("failed to write RCU trailer of length %d for block %d, too little space in output buffer?", rcuTrailerLength, blockno);
235 if ((iResult=decoder->CopyBackward(outputPtr, iCapacity-iOutputSize))>=0) {
236 if (channelSize == iResult) {
237 if (channelSize%5 == 0) {
238 iNofAltro40+=channelSize/5;
239 iOutputSize+=channelSize;
241 if (fTalkative) HLTWarning("corrupted ALTRO channel: incomplete 40 bit word");
246 if (fTalkative) HLTWarning("internal error: failed to copy full channel: %d out of %d bytes", iResult, channelSize);
251 if (fTalkative) HLTError("failed to write ALTRO channel of length %d for block %d", channelSize, blockno);
252 // corrupted channel, but keep going
260 // write the common data header
261 if ((iResult=CopyBlockToEnd(outputPtr, iCapacity, iOutputSize, pDesc->fPtr, cdhSize))>=0) {
262 assert(iResult==cdhSize);
263 iOutputSize+=cdhSize;
265 // set new length of the data block
266 AliHLTUInt32_t* pCdhSize=reinterpret_cast<AliHLTUInt32_t*>(outputPtr+iCapacity-iOutputSize);
267 *pCdhSize=iOutputSize;
269 // set number of Altro words
270 AliHLTUInt32_t* pNofAltro40=reinterpret_cast<AliHLTUInt32_t*>(outputPtr+iCapacity-rcuTrailerLength);
271 *pNofAltro40=iNofAltro40;
273 // insert block descriptor
274 AliHLTComponentBlockData bd;
276 bd.fOffset=iCapacity-iOutputSize;
277 bd.fSize=iOutputSize;
278 bd.fDataType=pDesc->fDataType;
279 bd.fSpecification=pDesc->fSpecification;
280 outputBlocks.push_back(bd);
281 iCapacity-=iOutputSize;
283 HLTError("failed to write CDH of length %d for block %d", cdhSize, blockno);
287 HLTInfo("data block %d (0x%08x): selected %d out of %d ALTRO channel(s), %d corrupted channels skipped", blockno, pDesc->fSpecification, iSelected, iTotal, iCorrupted);
289 if (decoder) delete decoder;
292 outputBlocks.clear();
295 // !!! do not change the size since the output buffer is filled from the end !!!
300 int AliHLTAltroChannelSelectorComponent::CopyBlockToEnd(AliHLTUInt8_t* pTgt, unsigned capacity, unsigned position, void* pSrc, unsigned size)
303 if (pTgt==NULL || pSrc==NULL) return -EINVAL;
304 if (capacity-position<size) return -ENOSPC;
306 memcpy(pTgt+(capacity-position-size), pSrc, size);