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
46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
/***
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Oak - Non-Linear Video Editor
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Copyright (C) 2026 Oak Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef OAK_PLAYBACKAUDIOCLOCK_H
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#define OAK_PLAYBACKAUDIOCLOCK_H
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namespace olive
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{
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/**
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* @brief Source of an audio output clock for playback timing
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*/
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class PlaybackAudioClock {
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public:
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virtual ~PlaybackAudioClock() = default;
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/**
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* @brief Seconds of audio consumed by the output device
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*
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* Must return a negative value when no clocked output is running, in
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* which case the caller should fall back to the wall clock.
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*/
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virtual double seconds() const = 0;
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};
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}
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#endif // OAK_PLAYBACKAUDIOCLOCK_H
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