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/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "viewerplaybacktimer.h"
#include <QDateTime>
OLIVE_NAMESPACE_ENTER
void ViewerPlaybackTimer::Start(const int64_t &start_timestamp, const int &playback_speed, const double &timebase)
{
start_msec_ = QDateTime::currentMSecsSinceEpoch();
start_timestamp_ = start_timestamp;
playback_speed_ = playback_speed;
timebase_ = timebase;
}
int64_t ViewerPlaybackTimer::GetTimestampNow() const
{
int64_t real_time = QDateTime::currentMSecsSinceEpoch() - start_msec_;
int64_t frames_since_start = qRound(static_cast<double>(real_time) / (timebase_ * 1000));
return start_timestamp_ + frames_since_start * playback_speed_;
}
OLIVE_NAMESPACE_EXIT
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