Mike-Solar
a7ddc0f114
- playback timer uses the audio output device as its master clock: the PortAudio callback counts consumed frames (including underrun zero-fill) so video cannot drift away from what is heard; wall clock remains as fallback when no clocked output is running - output clock compensates for device output latency; new Preferences > Audio buffer size setting (0 = auto) - SampleBuffer::speed() now uses linear interpolation instead of nearest-neighbor sampling - regression tests: audio-clock driven timer (fwd/rev/speed), wall clock fallback, interpolation correctness
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2022 Olive Team
|
|
Modifications Copyright (C) 2025 mikesolar
|
|
|
|
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/>.
|
|
|
|
***/
|
|
|
|
#ifndef OAK_VIEWERPLAYBACKTIMER_H
|
|
#define OAK_VIEWERPLAYBACKTIMER_H
|
|
|
|
#include <QtGlobal>
|
|
#include <QElapsedTimer>
|
|
|
|
#include "common/define.h"
|
|
#include "common/playbackaudioclock.h"
|
|
|
|
namespace olive
|
|
{
|
|
|
|
class ViewerPlaybackTimer {
|
|
public:
|
|
void start(const int64_t &start_timestamp, const int &playback_speed,
|
|
const double &timebase,
|
|
const PlaybackAudioClock *audio_clock = nullptr);
|
|
|
|
int64_t get_timestamp_now() const;
|
|
|
|
private:
|
|
QElapsedTimer timer_;
|
|
int64_t start_timestamp_;
|
|
|
|
int playback_speed_;
|
|
|
|
double timebase_;
|
|
|
|
const PlaybackAudioClock *audio_clock_ = nullptr;
|
|
};
|
|
|
|
}
|
|
|
|
#endif // OAK_VIEWERPLAYBACKTIMER_H
|