[LAU] jackdbus issues: a workaround ? (Was: more jack/qjackctl madness)

alex stone compose59 at gmail.com
Mon May 18 10:46:46 EDT 2009

Danni, and i'm sure you have a fine collection of headscarfs to
complete the 'picture'. :)

Thanks for the explanation about Dbus.
And for what it's worth, i think you've hit the nub of this (imho). If
app builders use jack by default, or have a jack option in audio and
midi preferences, we'd be discussing the weather instead.


On Mon, May 18, 2009 at 6:37 PM, Danni Coy <danni.coy at gmail.com> wrote:
>> p.s. what does pulse/dbus do, that Jack can't, if the same relentless
>> effort being put into the dbus/pulse hybrid, were put into maturing
>> Jack even further? And what of the devs who refuse, are reluctant to,
>> or don't see the advantages in writing Jack audio code, and plugins
>> for their apps? I still don't understand how writing a pulse plugin is
>> any harder than writing a jack audio plugin, or code.
> Pulse and DBus are two completely different things....
> DBus is a means for two processes to communicate with each other. It is the
> standard way of communicating with running applications on GNOME and KDE 4
> Desktop environments. KDE 2/3 had a different IPC mechanism which was very
> similar.
> Though it is typically run in a desktop environment AFAIK it is not dependent
> on having a desktop. Using DBus for IPC is a bit like using XML to do your
> config files... You get to do the job using standard tools and libraries and end
> up maintaining less code.
> It also means that users and developers now have a standardised method of
> talking to your app/daemon while it is running. I am hoping this can go some
> ways to providing a LASH interface that works properly.
> Currently I don't see any long term downsides to using DBus as the IPC. The
> short term problems is that applications like qjackctl can't yet properly
> interact with a dbus based Jack and until that happens the old method should
> be the one that the distros use by default.
> Pulse on the other hand is a sound deamon that does seem to be taking over
> things. Mostly it provides a means of using different applications together on
> hardware that does not support hardware mixing. (something I would much rather
> see ALSA fixed properly to do. To me it is a reasonable idea in theory but a
> PITA in practice. Fortunately I have a FFADO soundcard which means that jack
> is the only supported means of communicating with the hardware. Since xinelib
> now supports jack - pretty much everything I want to use will work. You know
> for when I want to listen to Pistols and Flowers in Amarok and plagiarise
> guitar licks :p
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