Re: [LAD] Portable user interfaces for LV2 plugins

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From: David Robillard <d@...>

To: Stefano D'Angelo <zanga.mail@...>

Cc: <linux-audio-dev@...>

Subject: Re: [LAD] Portable user interfaces for LV2 plugins

Date: Thursday, March 3, 2011 - 12:06 am

On Wed, 2011-03-02 at 23:36 +0100, Stefano D'Angelo wrote:

quoted text

> 2011/3/2 Paul Davis :

[...]

quoted text

> > AU, which is the only other plugin API to explicitly support
> > plugin<->GUI separation (even across processes) works in exactly the
> > same way as LV2. there are many AU plugins which do precisely what you
> > describe, yet still use a host-mediated parameter accessor API to both
> > control and represent current plugin state. this conceptual issue has
> > been thrashed out many times on the coreaudio mailing list as far back
> > as 1994, and nobody ever convinced the coreaudio guys (who are a smart
> > bunch of guys) that they had done it wrong.
>
> Since I'm not just complaining or posing hypotetical questions, but
> want the understand the issue at its deepest, I want to ask you to
> please better point out what is exactly this host-mediate parameter
> accessor API (a link to docs is more than enough).

The host provides a LV2UI_Write_Function for UIs to send to plugins (via
a port):

http://lv2plug.in/ns/doc/html/ui_8h.html#a4f6e52c841a8a6fbcf36d4415ee661...

The host calls port_event on the LV2UI_Descriptor to notify the UI about
activity at a port:

http://lv2plug.in/ns/doc/html/structLV2UI__Descriptor.html#acb624a2f65a1...

The relevant header is:

http://lv2plug.in/ns/extensions/ui/ui.h

-dr

P.S. Sure would be nice of Doxygen could do human readable URIs for this
sort of thing...

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[LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution Reverb, Chris Cannam, (Wed Feb 23, 10:38 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Wed Feb 23, 11:56 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Chris Cannam, (Thu Feb 24, 10:48 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Fri Feb 25, 6:34 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Chris Cannam, (Fri Feb 25, 11:17 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 12:54 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Paul Davis, (Sat Feb 26, 1:44 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 2:29 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Paul Davis, (Sat Feb 26, 4:12 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Tue Mar 1, 3:19 pm)

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..., Stefano D'Angelo, (Fri Feb 25, 7:14 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..., Stefano D'Angelo, (Fri Feb 25, 7:15 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..., Stefano D'Angelo, (Fri Feb 25, 8:00 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..., Stefano D'Angelo, (Fri Feb 25, 8:24 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..., David Robillard, (Fri Feb 25, 7:59 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..., Jeremy Salwen, (Fri Feb 25, 9:02 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Paul Davis, (Fri Feb 25, 10:42 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Fri Feb 25, 9:02 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..., David Robillard, (Fri Mar 11, 6:24 pm)

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..., Stefano D'Angelo, (Thu Mar 24, 6:49 am)

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..., David Robillard, (Fri Mar 25, 6:13 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..., David Robillard, (Sat Mar 12, 12:21 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Sat Feb 26, 2:11 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 5:44 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Sat Feb 26, 5:46 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Sat Feb 26, 2:12 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Fri Feb 25, 8:13 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..., David Robillard, (Sat Feb 26, 6:09 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..., Stefano D'Angelo, (Sat Feb 26, 4:47 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 6:20 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..., David Robillard, (Sat Feb 26, 8:09 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..., David Robillard, (Mon Feb 28, 11:18 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Tue Mar 1, 1:00 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Tue Mar 1, 3:32 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Tue Mar 1, 3:55 pm)

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..., Stefano D'Angelo, (Sat Feb 26, 5:45 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..., Stefano D'Angelo, (Sat Feb 26, 6:37 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..., Stefano D'Angelo, (Sun Feb 27, 9:17 am)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Giuseppe Zompatori, (Sun Feb 27, 12:55 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Stefano D'Angelo, (Sun Feb 27, 1:13 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..., Stefano D'Angelo, (Sat Feb 26, 7:18 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 6:30 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., Olivier Guilyardi, (Sat Feb 26, 6:44 pm)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Sat Feb 26, 10:37 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)

Re: [LAD] RDF libraries, was Re: [ANN] IR: LV2 Convolution R..., David Robillard, (Thu Feb 24, 4:54 pm)