[Pipewire-devel] Fwd: Real-time question

Ophiuchia ophiuchia at gmail.com
Thu Jun 3 15:52:48 UTC 2021


Dear Wim,
Thank you for the information, this is very helpful.
Yes, the idea would be to exchange rt signals from (initially 2) devices
but with potential to add more nodes (similar to pro-audio that connects to
edge interfaces/speakers/etc via AVB/TSN).
(i) Is it possible to treat control signals as "audio streams" or is there
a need to introduce a new class of signals from the start?
(ii) What would be the best low-latency API to interface pipewire with a
client software? "Native" pipewire or maybe jack?
(iii) Focusing on non-TSN Ethernet to start, what is the best low-latency
Ethernet interface avaliable?
Thank you again,
Ophiuchia

On Thu, Jun 3, 2021 at 8:19 AM Wim Taymans <wim.taymans at gmail.com> wrote:

> Hi,
>
> > I would like to ask if pipewire can be used (or developed into) for
> real-time control tasks (similar to the development of Ethernet AVB to TSN)?
>
> Maybe yes. If it's about reading data from ethernet and processing it
> in a graph, it could fit..
>
> > Related, I would like to ask if (i) pipewire is compatible with the
> PREEMPT-RT patches?
>
> Yes
>
> >  pipewire can interface (or can be made to) interface with Ethernet TSN?
>
> It can't but it could be implemented.
>
> Wim
>
>
> On Wed, 2 Jun 2021 at 21:09, Ophiuchia <ophiuchia at gmail.com> wrote:
> >
> > Dear Pipewire-Devel List Members,
> >
> > I would like to ask if pipewire can be used (or developed into) for
> real-time control tasks (similar to the development of Ethernet AVB to TSN)?
> >
> > Related, I would like to ask if (i) pipewire is compatible with the
> PREEMPT-RT patches? and (ii) pipewire can interface (or can be made to)
> interface with Ethernet TSN?
> >
> > We have a need for a framework that can access Ethernet TSN information
> and execute in real time. We'd be happy to contribute if this is feasible
> and this is of relevance.
> >
> > Thank you in advance,
> > Ophiuchia
> >
> > _______________________________________________
> > Pipewire-devel mailing list
> > Pipewire-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/pipewire-devel
>
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