///-------------------------------------------------------------------------------------------------
///
/// \file Utils.cpp
/// \brief Implementation of utils for LSL within OpenViBE
/// \author Thomas Prampart (INRIA).
/// \version 0.0.1.
/// \date Thu Apr 1 2021.
///
/// \copyright (C) 2021 INRIA
///
/// This program is free software: you can redistribute it and/or modify
/// it under the terms of the GNU Affero General Public License as published
/// by the Free Software Foundation, either version 3 of the License, or
/// (at your option) any later version.
///
/// This program is distributed in the hope that it will be useful,
/// but WITHOUT ANY WARRANTY; without even the implied warranty of
/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
/// GNU Affero General Public License for more details.
///
/// You should have received a copy of the GNU Affero General Public License
/// along with this program.  If not, see <https://www.gnu.org/licenses/>.
///-------------------------------------------------------------------------------------------------

#include <lsl_cpp.h>

#include <system/ovCTime.h>
#include <openvibe/CTime.hpp>

#include "Utils.hpp"

namespace OpenViBE {
namespace LabStreamLayer {

double getLSLRelativeTime(const CTime& time)
{
	const CTime ovTimeNow(System::Time::zgetTime());
	const double lslRelativeTime = lsl::local_clock();

	double diffToCurrent;
	if (time > ovTimeNow)
	{
		diffToCurrent = (time - ovTimeNow).toSeconds();
	}
	else 
	{
		diffToCurrent = -(ovTimeNow - time).toSeconds();
	}

	return (lslRelativeTime + diffToCurrent);
}

}  // namespace LabStreamLayer
}  // namespace OpenViBE