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EntropyEncoderSpec.cxx
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91 lines (80 loc) · 3.34 KB
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
/// @file EntropyEncoderSpec.cxx
/// @author Michael Lettrich, Matthias Richter
/// @since 2020-01-16
/// @brief ProcessorSpec for the TPC cluster entropy encoding
#include "TPCWorkflow/EntropyEncoderSpec.h"
#include "DataFormatsTPC/CompressedClusters.h"
#include "Framework/ConfigParamRegistry.h"
#include "Headers/DataHeader.h"
using namespace o2::framework;
using namespace o2::header;
namespace o2
{
namespace tpc
{
void EntropyEncoderSpec::init(o2::framework::InitContext& ic)
{
mCTFCoder.setCombineColumns(!ic.options().get<bool>("no-ctf-columns-combining"));
std::string dictPath = ic.options().get<std::string>("ctf-dict");
if (!dictPath.empty() && dictPath != "none") {
mCTFCoder.createCoders(dictPath, o2::ctf::CTFCoderBase::OpType::Encoder);
}
}
void EntropyEncoderSpec::run(ProcessingContext& pc)
{
CompressedClusters clusters;
if (mFromFile) {
auto tmp = pc.inputs().get<CompressedClustersROOT*>("input");
if (tmp == nullptr) {
LOG(ERROR) << "invalid input";
return;
}
clusters = *tmp;
} else {
auto tmp = pc.inputs().get<CompressedClustersFlat*>("input");
if (tmp == nullptr) {
LOG(ERROR) << "invalid input";
return;
}
clusters = *tmp;
}
auto cput = mTimer.CpuTime();
mTimer.Start(false);
auto& buffer = pc.outputs().make<std::vector<o2::ctf::BufferType>>(Output{"TPC", "CTFDATA", 0, Lifetime::Timeframe});
mCTFCoder.encode(buffer, clusters);
auto encodedBlocks = CTF::get(buffer.data()); // cast to container pointer
encodedBlocks->compactify(); // eliminate unnecessary padding
buffer.resize(encodedBlocks->size()); // shrink buffer to strictly necessary size
// encodedBlocks->print();
mTimer.Stop();
LOG(INFO) << "Created encoded data of size " << encodedBlocks->size() << " for TPC in " << mTimer.CpuTime() - cput << " s";
}
void EntropyEncoderSpec::endOfStream(EndOfStreamContext& ec)
{
LOGF(INFO, "TPC Entropy Encoding total timing: Cpu: %.3e Real: %.3e s in %d slots",
mTimer.CpuTime(), mTimer.RealTime(), mTimer.Counter() - 1);
}
DataProcessorSpec getEntropyEncoderSpec(bool inputFromFile)
{
std::vector<InputSpec> inputs;
header::DataDescription inputType = inputFromFile ? header::DataDescription("COMPCLUSTERS") : header::DataDescription("COMPCLUSTERSFLAT");
return DataProcessorSpec{
"tpc-entropy-encoder", // process id
Inputs{{"input", "TPC", inputType, 0, Lifetime::Timeframe}},
Outputs{{"TPC", "CTFDATA", 0, Lifetime::Timeframe}},
AlgorithmSpec{adaptFromTask<EntropyEncoderSpec>(inputFromFile)},
Options{{"ctf-dict", VariantType::String, o2::base::NameConf::getCTFDictFileName(), {"File of CTF encoding dictionary"}},
{"no-ctf-columns-combining", VariantType::Bool, false, {"Do not combine correlated columns in CTF"}}}};
}
} // namespace tpc
} // namespace o2