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| /freebsd/sys/dev/sound/usb/ |
| H A D | uaudio.c | diff b2e97edf Mon Feb 12 11:04:57 GMT 2024 Florian Walpen <dev@submerge.ch> snd_uaudio(4): Adapt buffer length to buffer_ms tunable.
Adapt the length of the driver side audio buffer to the USB transfer
interval, which is adjustable through the buffer_ms tunable. This
eliminates unnecessary latency in USB audio playback.
To reduce power consumption caused by frequent CPU wakeups, increase the
default buffer_ms value to 4ms. In combination with adaptive buffer
length, this still results in less roundtrip latency compared to the
previous 2ms default.
Extend the buffer_ms value range to 1ms for low latency applications.
MFC after: 2 weeks
Reviewed by: christos
Differential Revision: https://reviews.freebsd.org/D41942
diff b2e97edf Mon Feb 12 11:04:57 GMT 2024 Florian Walpen <dev@submerge.ch> snd_uaudio(4): Adapt buffer length to buffer_ms tunable.
Adapt the length of the driver side audio buffer to the USB transfer
interval, which is adjustable through the buffer_ms tunable. This
eliminates unnecessary latency in USB audio playback.
To reduce power consumption caused by frequent CPU wakeups, increase the
default buffer_ms value to 4ms. In combination with adaptive buffer
length, this still results in less roundtrip latency compared to the
previous 2ms default.
Extend the buffer_ms value range to 1ms for low latency applications.
MFC after: 2 weeks
Reviewed by: christos
Differential Revision: https://reviews.freebsd.org/D41942
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