[pulseaudio-discuss] bluetooth latencies

[Alexander E. Patrakov]

I am not a bluetooth expert, but: is this a different latency? Maybe
the situation is that the headset has its own 28-ms buffer, and
PulseAudio adds 25 or 125 ms on top of that?

2017-01-30 21:35 GMT+05:00 Georg Chini <georg at chini.tk>:
> Hello,
>
> in module-bluez5-device.c and module-bluez4-device.c, latencies for
> bluetooth are defined as follows:
>
> #define FIXED_LATENCY_PLAYBACK_A2DP (25 * PA_USEC_PER_MSEC)
> #define FIXED_LATENCY_PLAYBACK_SCO (125 * PA_USEC_PER_MSEC)
> #define FIXED_LATENCY_RECORD_A2DP   (25 * PA_USEC_PER_MSEC)
> #define FIXED_LATENCY_RECORD_SCO    (25 * PA_USEC_PER_MSEC)
>
> Is the fixed latency for SCO playback a mistake? Both headsets I own
> report around 28 ms actual latency for the SCO sink, so I cannot
> understand why the fixed latency is set to 125 ms. Should I send a
> patch to correct it?
>
> Regards
>              Georg
>
> _______________________________________________
> pulseaudio-discuss mailing list
> pulseaudio-discuss at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss



-- 
Alexander E. Patrakov