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Masterarbeit/openvibe/extras-master/modules/labstreamlayer/src/Utils.cpp

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+///-------------------------------------------------------------------------------------------------
+///
+/// \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