Shairport-sync: Output to jack audio

[corentoulf]

I wondered if it was possible to route the signal to a jack audio server, to do signal processing before it goes out of the raspberry ? I tried different thing with alsa but I can't figure out how to do...
Thanks

[mikebrady]

Haven't tried it, but there is some information about going from an alsa output "device" to a jack inputer at http://jackaudio.org/faq/routing_alsa.html.

I imagine that these techniques will introduce a layer of latency, which would affect synchronisation.

[corentoulf]

Thanks for the fast feedback. I'll try it and tell you how fine that works.

[Appendit]

Have you tried to force audio thru the 3.5mm jack via "sudo raspi-config" ?

[mikebrady]

Hi there. The "jack" in question is not the headphone jack – it's the sound server software called "jack".

[mikebrady]

You can get the raw PCM out of a pipe with the latest version. No synchronisation though...

[corentoulf]

Okay, thanks for the information !

Le 1 sept. 2015 à 14:04, Mike Brady [email protected] a écrit :

You can get the raw PCM out of a pipe with the latest version. No synchronisation though...

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Reply to this email directly or view it on GitHub https://github.com/mikebrady/shairport-sync/issues/74#issuecomment-136688756.

[shtirlic]

Would it be nice to add jack output natively in shairport-sync, so even on mac osx we can use jack( via coreadio) without buggy libao? What you think @mikebrady?