Re: [LAD] LADI

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To: Bob Ham <rah@...>
Cc: <linux-audio-dev@...>
Date: Tuesday, December 22, 2009 - 9:22 pm

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Hi Bob,

thanks for commenting on LADI stuff

> The huge, major weak point that would prevent me from investing myself

D-Bus *can* span over multiple hosts. I've sent mail to this mailing
list that explains how to do it and what needs to be improved:

http://lalists.stanford.edu/lau/2009/11/0043.html

see also:

http://www.freedesktop.org/wiki/Software/DBusRemote (probably somewhat
obsolete, check the timestamp and the missing link to gabriel site).

I've adopted the gabriel project because it is possible to improve it as
a mean to achieve multihost LADI studios in future:

http://gabriel.sourceforge.net/

That said, there is no guarantee that ladish will use D-Bus for
communication between daemon and apps. LASH got this mainly because of
Juuso Alasuutari and because it was subject of his Summercode
project. My aim with "D-Bus + LASH" was to use D-Bus for lashd <-> jack
comunication and for lashd <-> control app communication. I agreed on
using D-Bus for app <-> lashd communication because that simplified
(yes it did) the LASH codebase. The use of D-Bus for app <-> ladishd IPC
was risky and it took some time to fix bugs, but at the end we made it
to work acceptably well.

Also, there is no guarantee that ladish will use D-Bus for remote IPC.
I have rough plan how to use D-Bus for multihost studios, but there is
lot of work to do until 1.0 is reached. After 1.0 is reached, I will
reconsider available options for the multihost capable ladish (that
will be 2.0), I will decide and I'll provide finer milestones to
acomplish this goal, in the same way as I did for 1.0.

In summary, I plan to use D-Bus at least until ladish-1.0 is
relased. I've seen lot of arguments against D-Bus and so far I din't
find them valid for the goals I'm working for. If D-Bus gets proven as
wrong choice for single hosts studio before the release of 1.0, I'll
have to change it early. However I find such incident highly
non-probable. Chances for remote D-Bus being not suitable are slightly
higher and I'll reconsider D-Bus after ladish-1.0 release. Until then,
D-Bus is the IPC technology that allows me to implement LADI features in
fastest possible way and does not look as something that I'll abandon
soon.

This mail is not intended to be offensive to anyone. If someone dislikes
D-Bus for one reason or another it is his right.

I'm always open for constructive discussions, especially if they are in
the scope of the LADI project. I'm open and glad for the feedback of
early jackdbus and ladish adopters.

=2D-=20
Nedko Arnaudov

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Messages in current thread:
[LAD] LADI, Nedko Arnaudov, (Fri Nov 20, 8:16 pm)
Re: [LAD] LADI, Danni Coy, (Sat Nov 21, 4:17 am)
Re: [LAD] LADI, Sean Corbett, (Sat Nov 21, 3:50 am)
Re: [LAD] LADI, Rui Nuno Capela, (Sat Nov 21, 2:01 am)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 3:07 am)
Re: [LAD] LADI, Paul Davis, (Sat Nov 21, 4:21 am)
Re: [LAD] LADI, Bob Ham, (Mon Nov 23, 11:49 am)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 5:19 am)
Re: [LAD] LADI, Paul Davis, (Sat Nov 21, 2:45 pm)
Re: [LAD] LADI, Bob Ham, (Mon Nov 23, 12:26 pm)
Re: [LAD] LADI, Gene Heskett, (Mon Nov 23, 4:57 pm)
Re: [LAD] LADI, Adrian Knoth, (Mon Nov 23, 1:17 pm)
Re: [LAD] LADI, , (Tue Nov 24, 10:11 pm)
Re: [LAD] LADI, Loki Davison, (Mon Nov 23, 10:17 pm)
Re: [LAD] LADI, Bob Ham, (Tue Nov 24, 8:53 am)
Re: [LAD] LADI, Adrian Knoth, (Tue Nov 24, 3:53 pm)
Re: [LAD] LADI, Bob Ham, (Tue Nov 24, 10:11 pm)
Re: [LAD] LADI, rosea grammostola, (Sat Dec 19, 8:15 pm)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 7:57 pm)
Re: [LAD] LADI, Adrian Knoth, (Wed Dec 23, 10:58 am)
Re: [LAD] LADI, Bob Ham, (Wed Dec 23, 1:08 pm)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Wed Dec 23, 1:43 pm)
Re: [LAD] LADI, Bob Ham, (Wed Dec 23, 1:59 pm)
Re: [LAD] LADI, Patrick Shirkey, (Tue Dec 22, 8:19 pm)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 11:40 pm)
Re: [LAD] LADI, , (Sat Dec 19, 10:23 pm)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 8:02 pm)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Sun Dec 20, 5:25 am)
Re: [LAD] LADI, rosea grammostola, (Sun Dec 20, 10:24 am)
Re: [LAD] LADI, torbenh, (Sun Dec 20, 12:13 pm)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 7:17 pm)
Re: [LAD] LADI, rosea grammostola, (Sun Dec 20, 8:11 pm)
Re: [LAD] LADI, torbenh, (Sun Dec 20, 11:18 pm)
Re: [LAD] LADI, rosea grammostola, (Mon Dec 21, 10:45 am)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 8:35 pm)
Re: [LAD] LADI, Nedko Arnaudov, (Tue Dec 22, 9:22 pm)
Re: [LAD] LADI, rosea grammostola, (Wed Dec 23, 10:25 pm)
Re: [LAD] LADI, Nedko Arnaudov, (Thu Dec 24, 6:35 pm)
Re: [LAD] LADI, Ralf Mardorf, (Fri Dec 25, 2:46 pm)
Re: [LAD] LADI, Patrick Shirkey, (Fri Dec 25, 11:12 pm)
Re: [LAD] LADI, Ralf Mardorf, (Sun Dec 27, 2:11 am)
Re: [LAD] LADI, Nedko Arnaudov, (Sun Dec 27, 2:28 am)
Re: [LAD] LADI, Ralf Mardorf, (Sun Dec 27, 2:44 am)
Re: [LAD] LADI, Ralf Mardorf, (Sun Dec 27, 2:26 am)
Re: [LAD] LADI, Ralf Mardorf, (Sat Dec 26, 1:48 am)
Re: [LAD] JackMix [was: LADI], james morris, (Sat Dec 26, 11:18 am)
Re: [LAD] JackMix [was: LADI], Arnold Krille, (Sun Dec 27, 3:05 pm)
Re: [LAD] JackMix [was: LADI], Patrick Shirkey, (Sat Dec 26, 12:13 pm)
Re: [LAD] JackMix [was: LADI], james morris, (Sat Dec 26, 12:41 pm)
Re: [LAD] JackMix [was: LADI], Paul Davis, (Sat Dec 26, 2:11 pm)
Re: [LAD] JackMix [was: LADI], james morris, (Sat Dec 26, 10:32 pm)
Re: [LAD] JackMix [was: LADI], Arnold Krille, (Sun Dec 27, 3:03 pm)
Re: [LAD] JackMix [was: LADI], james morris, (Sun Dec 27, 4:38 pm)
Re: [LAD] JackMix [was: LADI], Ralf Mardorf, (Sun Dec 27, 7:20 am)
Re: [LAD] JackMix [was: LADI], Paul Davis, (Sun Dec 27, 1:52 pm)
Re: [LAD] JackMix [was: LADI], Ralf Mardorf, (Mon Dec 28, 6:49 pm)
Re: [LAD] JackMix [was: LADI], Patrick Shirkey, (Sat Dec 26, 12:50 pm)
Re: [LAD] LADI, hermann, (Sat Dec 26, 4:25 am)
Re: [LAD] LADI, rosea grammostola, (Fri Dec 25, 3:39 pm)
Re: [LAD] LADI, Ralf Mardorf, (Fri Dec 25, 4:16 pm)
Re: [LAD] LADI, Adrian Knoth, (Fri Dec 25, 7:49 pm)
Re: [LAD] LADI, rosea grammostola, (Wed Jan 6, 1:24 pm)
Re: [LAD] LADI, Ralf Mardorf, (Fri Dec 25, 8:01 pm)
Re: [LAD] LADI, rosea grammostola, (Fri Dec 25, 4:32 pm)
Re: [LAD] LADI, Ralf Mardorf, (Fri Dec 25, 4:31 pm)
Re: [LAD] LADI, Bob Ham, (Wed Dec 23, 12:00 am)
Re: [LAD] LADI, Nedko Arnaudov, (Wed Dec 23, 11:29 am)
Re: [LAD] LADI, Bob Ham, (Wed Dec 23, 12:05 pm)
Re: [LAD] LADI, David Robillard, (Tue Dec 22, 4:57 pm)
Re: [LAD] LADI, rosea grammostola, (Tue Dec 22, 5:24 pm)
Re: [LAD] LADI, Chris Cannam, (Mon Dec 21, 9:33 am)
Re: [LAD] LADI, Patrick Shirkey, (Mon Dec 21, 8:56 am)
Re: [LAD] LADI, alex stone, (Mon Dec 21, 9:22 am)
Re: [LAD] LADI, Patrick Shirkey, (Mon Dec 21, 9:36 am)
Re: [LAD] LADI, alex stone, (Mon Dec 21, 9:45 am)
Re: [LAD] LADI, Patrick Shirkey, (Mon Dec 21, 10:12 am)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Mon Dec 21, 1:40 pm)
Re: [LAD] LADI, Patrick Shirkey, (Mon Dec 21, 10:55 pm)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Tue Dec 22, 12:36 am)
Re: [LAD] LADI, torbenh, (Tue Dec 22, 3:31 am)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Tue Dec 22, 5:33 am)
Re: [LAD] LADI, Thorsten Wilms, (Tue Dec 22, 9:36 am)
Re: [LAD] LADI, alex stone, (Tue Dec 22, 7:29 am)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Tue Dec 22, 12:13 pm)
Re: [LAD] LADI, alex stone, (Tue Dec 22, 12:30 pm)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Tue Dec 22, 1:04 pm)
Re: [LAD] LADI, alex stone, (Tue Dec 22, 2:09 pm)
Re: [LAD] LADI, Gabriel M. Beddingfield, (Tue Dec 22, 2:33 pm)
Re: [LAD] LADI, Patrick Shirkey, (Tue Dec 22, 7:29 pm)
Re: [LAD] LADI, Patrick Shirkey, (Tue Dec 22, 7:41 pm)
Re: [LAD] LADI, Dave Phillips, (Tue Dec 22, 2:42 pm)
Re: [LAD] LADI, Patrick Shirkey, (Tue Dec 22, 1:02 am)
Re: [LAD] LADI, Nedko Arnaudov, (Mon Dec 21, 10:34 am)
Re: [LAD] LADI, alex stone, (Mon Dec 21, 11:07 am)
Re: [LAD] LADI, James Warden, (Mon Dec 21, 11:26 am)
Re: [LAD] LADI, Louigi Verona, (Sun Dec 20, 8:31 pm)
Re: [LAD] LADI, Christopher Cherrett, (Sun Dec 20, 10:20 pm)
Re: [LAD] LADI, Patrick Shirkey, (Sun Dec 20, 1:22 am)
Re: [LAD] LADI, Louigi Verona, (Sun Dec 20, 12:48 am)
Re: [LAD] LADI, Ralf Mardorf, (Sun Dec 20, 1:21 am)
Re: [LAD] LADI, Patrick Shirkey, (Sun Dec 20, 1:19 am)
Re: [LAD] LADI, Louigi Verona, (Sun Dec 20, 9:33 am)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 5:45 pm)
Re: [LAD] LADI, Paul Davis, (Tue Dec 22, 5:56 pm)
Re: [LAD] LADI, Bob Ham, (Tue Dec 22, 11:35 pm)
Re: [LAD] LADI, Paul Davis, (Sun Dec 20, 1:40 pm)
Re: [LAD] LADI, Jostein Chr. Andersen, (Sun Dec 20, 2:20 pm)
Re: [LAD] LADI, alex stone, (Sun Dec 20, 11:27 am)
Re: [LAD] LADI, Louigi Verona, (Sun Dec 20, 11:52 am)
Re: [LAD] LADI, rosea grammostola, (Sun Dec 20, 12:55 pm)
Re: [LAD] LADI, alex stone, (Sun Dec 20, 12:21 pm)
Re: [LAD] LADI, Nedko Arnaudov, (Sun Dec 20, 10:31 am)
Re: [LAD] LADI, Louigi Verona, (Sun Dec 20, 10:32 am)
Re: [LAD] LADI, Ralf Mardorf, (Sun Dec 20, 1:32 am)
Re: [LAD] LADI, Paul Davis, (Tue Nov 24, 4:05 pm)
Re: [LAD] LADI, Rui Nuno Capela, (Tue Nov 24, 5:10 pm)
Re: [LAD] LADI, Paul Davis, (Tue Nov 24, 4:13 pm)
Re: [LAD] LADI, , (Tue Nov 24, 5:05 pm)
Re: [LAD] LADI, Paul Davis, (Tue Nov 24, 5:55 pm)
Re: [LAD] LADI, , (Tue Nov 24, 7:28 pm)
Re: [LAD] LADI, Paul Davis, (Tue Nov 24, 7:46 pm)
Re: [LAD] LADI, , (Tue Nov 24, 9:41 pm)
Re: [LAD] LADI, Chris Cannam, (Tue Nov 24, 8:19 pm)
Re: [LAD] LADI, Florian Faber, (Mon Nov 23, 1:37 pm)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 3:01 pm)
Re: [LAD] LADI, David Robillard, (Sat Nov 21, 9:54 pm)
Re: [LAD] LADI, Rui Nuno Capela, (Sat Nov 21, 11:13 am)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 2:48 pm)
Re: [LAD] LADI, Rui Nuno Capela, (Sat Nov 21, 3:37 pm)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 6:12 pm)
Re: [LAD] LADI, Rui Nuno Capela, (Sat Nov 21, 6:21 pm)
Re: [LAD] LADI, Patrick Shirkey, (Sat Nov 21, 6:24 pm)
Re: [LAD] LADI, , (Sat Nov 21, 12:00 am)
Re: [LAD] LADI, Victor Lazzarini, (Sat Nov 21, 12:51 am)
Re: [LAD] LADI, , (Sat Nov 21, 12:12 pm)