// Copyright CERN and copyright holders of ALICE O2. This software is

// distributed under the terms of the GNU General Public License v3 (GPL

// Version 3), copied verbatim in the file "COPYING".

//

// See http://alice-o2.web.cern.ch/license for full licensing information.

//

// 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.

#ifndef ALICEO2_DATASAMPLINGHEADER_H

#define ALICEO2_DATASAMPLINGHEADER_H

/// \file DataSamplingHeader.h

/// \brief A declaration of O2 Data Sampling Header

///

/// \author Piotr Konopka, piotr.jan.konopka@cern.ch

/// @brief a header which contains some meta-data generated by Data Sampling

#include "Headers/DataHeader.h"

namespace o2

{

namespace framework

{

struct DataSamplingHeader : public header::BaseHeader {

// static data for this header type/version

static const uint32_t sVersion;

static const o2::header::HeaderType sHeaderType;

static const o2::header::SerializationMethod sSerializationMethod;

static constexpr uint32_t deviceIDTypeSize = 16;

using DeviceIDType = header::Descriptor<deviceIDTypeSize>;

// data sampling header fields

uint64_t sampleTimeUs;

uint32_t totalAcceptedMessages;

uint32_t totalEvaluatedMessages;

DeviceIDType deviceID;

DataSamplingHeader()

: DataSamplingHeader(0, 0, 0, "")

{

}

DataSamplingHeader(uint64_t _sampleTimeUs, uint32_t _totalAcceptedMessages, uint32_t _totalEvaluatedMessages, DeviceIDType _deviceID)

: BaseHeader(sizeof(DataSamplingHeader), sHeaderType, sSerializationMethod, sVersion),

sampleTimeUs(_sampleTimeUs),

totalAcceptedMessages(_totalAcceptedMessages),

totalEvaluatedMessages(_totalEvaluatedMessages),

deviceID(_deviceID)

{

}

DataSamplingHeader(const DataSamplingHeader&) = default;

DataSamplingHeader& operator=(const DataSamplingHeader&) = default;

static const DataSamplingHeader* Get(const BaseHeader* baseHeader)

{

return (baseHeader->description == DataSamplingHeader::sHeaderType) ? static_cast<const DataSamplingHeader*>(baseHeader) : nullptr;

}

};

} // namespace framework

} // namespace o2

#endif //ALICEO2_DATASAMPLINGHEADER_H