feat(alsa): use LinkSynchronized audio timestamps on supported hardware#1177
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roderickvd merged 5 commits intomasterfrom Apr 26, 2026
Merged
feat(alsa): use LinkSynchronized audio timestamps on supported hardware#1177roderickvd merged 5 commits intomasterfrom
roderickvd merged 5 commits intomasterfrom
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Use higher fidelity audio timestamps on ALSA devices that support them, while remaining in the same monotonic clock domain as
now()for A/V sync. This results in lower jitter.It also fixes some long-standing bugs with timestamps during stream creation. I now have the insight that callbacks already start firing when the ALSA PCM is in PREPARED state (either from initial creation or due to xrun recovery), while the trigger timestamp doesn't start counting until the PCM is in RUNNING state.
Devices without such support continue to use the system clock.