Re: [LAD] Portable user interfaces for LV2 plugins

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: Stefano D'Angelo <zanga.mail@...>
Cc: <linux-audio-dev@...>
Date: Friday, March 4, 2011 - 2:25 pm

On 03/04/2011 01:53 PM, Stefano D'Angelo wrote:

There is one thing which stays on my mind.

I am familiar with developing JACK clients, not plugins. However, there has been
quite a few discussions in the past where JACK was advocated as a way to create
modules, DSP units dedicated to a specific task. In other terms: some kind of
plugins.

And what is absolutely nice about this is how it is non-intrusive. When working
on a JACK client, there are only audio input and output ports, a thin transport
layer, done. From these primitives, upon this bare but solid ground, a developer
creativity enjoys a lot of freedom.

However, there's been this critical and long-lasting session handling problem.
Fortunately, this problem doesn't occur for LADSPA and LV2 plugins, since saving
and restoring state is performed by the host.

But, with this UI/engine separation, whenever a developer comes out with an
innovative idea that he really likes, he's very likely to hit a wall because of
a specific LV2 technical constraint. And at the same time it takes an incredible
(if only possible) coordination effort to maintain LV2 to fulfill and
*anticipate* all needs.

But LV2 is extensible. So what I think is that in addition to the extensions
which imply UI/engine separation (and I understand that it's important in many
cases), there should be a DoWhatTheFuckYouWantInYourPlugin extension ;)

With such plugins, restoring/saving state would rely on passing a blob in
addition to restoring/saving the control ports values. There would be no such
thing as UI/engine separation. The plugin would be self contained. And hopefully
it would integrate nicely with other extensions such as midi.

I think that this extension, since it would only imply simple but powerful
primitives, would give a lot of freedom to developers who want that, and at the
same time be rather easy to maintain.

--
Olivier

_______________________________________________
Linux-audio-dev mailing list
Linux-audio-dev@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Jörn Nettingsmeier, (Sat Feb 26, 10:37 am)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 7:09 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 7:14 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 7:29 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 8:21 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 8:26 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Feb 25, 8:09 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Mar 11, 11:08 am)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Mar 18, 5:06 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Mar 18, 11:44 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Thu Mar 24, 10:10 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sun Mar 27, 4:08 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Fri Mar 11, 6:40 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 4:33 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 6:25 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 6:32 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Mon Feb 28, 4:24 pm)
[LAD] Lightweight LV2 implementation (Was: RDF libraries), David Robillard, (Thu Sep 29, 5:48 am)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 5:28 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 6:19 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Giuseppe Zompatori, (Sun Feb 27, 4:04 am)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Giuseppe Zompatori, (Sun Feb 27, 12:55 pm)
Re: [LAD] Audio effects on Android, Olivier Guilyardi, (Mon Feb 28, 5:03 pm)
Re: [LAD] Audio effects on Android, Stefano D'Angelo, (Tue Mar 1, 12:53 pm)
Re: [LAD] Audio effects on Android, Olivier Guilyardi, (Tue Mar 1, 4:21 pm)
Re: [LAD] Audio effects on Android, Stefano D'Angelo, (Wed Mar 2, 7:18 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 7:10 pm)
Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 6:44 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Mon Feb 28, 8:51 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Tue Mar 1, 12:00 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Tue Mar 1, 6:36 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Tue Mar 1, 11:24 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 1:20 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 5:34 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 6:31 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 7:17 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 7:55 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 9:27 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 10:45 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 9:15 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 10:44 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 10:00 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 11:14 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 11:17 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Fons Adriaensen, (Wed Mar 2, 10:49 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Thu Mar 3, 10:36 am)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Thu Mar 3, 12:39 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Fons Adriaensen, (Thu Mar 3, 1:27 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Fri Mar 4, 12:53 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Fri Mar 4, 7:40 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Pedro Alves, (Fri Mar 4, 9:45 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Sat Mar 5, 12:05 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Fri Mar 4, 10:00 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Pedro Alves, (Fri Mar 4, 10:56 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Sat Mar 5, 12:07 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Fri Mar 4, 2:25 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Fri Mar 4, 7:53 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Sat Mar 5, 12:10 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Fri Mar 4, 2:40 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Fri Mar 4, 3:00 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Fons Adriaensen, (Fri Mar 4, 2:14 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Fri Mar 4, 2:17 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 11:17 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Fons Adriaensen, (Thu Mar 3, 12:03 am)
Re: [LAD] Portable user interfaces for LV2 plugins, gene heskett, (Thu Mar 3, 2:33 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Fons Adriaensen, (Thu Mar 3, 11:15 am)
Re: [LAD] Portable user interfaces for LV2 plugins, gene heskett, (Fri Mar 4, 3:06 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 10:46 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 8:08 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 10:36 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Thu Mar 3, 12:06 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 10:58 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 11:14 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 9:38 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Giblock, (Wed Mar 2, 10:16 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 10:49 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Giblock, (Wed Mar 2, 11:02 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Thu Mar 3, 12:27 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Thu Mar 3, 10:05 am)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Fri Mar 4, 12:06 am)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Fri Mar 4, 12:43 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Fri Mar 4, 7:28 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 11:20 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Gabriel M. Beddingfield, (Wed Mar 2, 11:09 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Chris Cannam, (Wed Mar 2, 8:44 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 8:47 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 1:27 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 2:11 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Wed Mar 2, 2:30 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Fri Mar 11, 11:03 am)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 4:58 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 5:25 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Paul Davis, (Wed Mar 2, 5:29 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 7:15 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 6:03 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Wed Mar 2, 3:58 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Wed Mar 2, 4:57 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Tue Mar 1, 1:13 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Tue Mar 1, 3:47 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Mon Feb 28, 9:37 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Olivier Guilyardi, (Tue Mar 1, 5:53 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Tue Mar 1, 5:55 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, Stefano D'Angelo, (Tue Mar 1, 6:01 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Tue Mar 1, 10:43 pm)
Re: [LAD] Portable user interfaces for LV2 plugins, David Robillard, (Tue Mar 1, 12:02 am)