Subject: RE: [linux-audio-dev] Problem with XML for LADSPA GUI?
From: Richard W.E. Furse (richard_AT_muse.demon.co.uk)
Date: Sat May 27 2000 - 03:28:55 EEST
You didn't quote or address the central paragraph in my email in which I
asked:
"There's also a little more to the Snd implementation - not only are the
user's breakpoints plotted, but the actual filter shape is displayed. I
expect this widget is essentially unique to the Snd filter. I don't know
how one writes [an] XML widget - is there a standard for this that we could
use? This could be very helpful."
If you really have an XML parser capable of building a GUI based on the tag
you have below then we really don't need a GUI at all - simply write a tag
that says "oh yeah, generate a GUI for these LADSPA plugins" and it'll sort
it out for us. It's all very well to argue "XML will sort it out," but I
need a "how" in there too. It's "real life ! :)" that I'm interested in. [
:-) ! ]
-- Richard
-----Original Message-----
From: Jorn Nettingsmeier [SMTP:nettings_AT_folkwang.uni-essen.de]
Sent: Friday, May 26, 2000 8:53 PM
To: Richard W.E. Furse
Cc: linux-audio-dev
Subject: Re: [linux-audio-dev] Problem with XML for LADSPA GUI?
hello richard !
i'm cc:ing this to LAD, i meant to post here anyway (DAMN reply-to:
!!)...
"Richard W.E. Furse" wrote:
>
> Ooo this sounds really promising - I need to read up on XML! The area I
> suppose I've been expecting problems with is the live two-way information
> exchange required between an arbitrary widget, other widgets and
on-screen
> data and the LADSPA host. Do you know if/how this can be approached?
this does not touch the XML definition.
in fact, the XML file will be pretty dumb, i think. a tag may look
somewhat like this:
<
"i want you to draw a realtime analyzer with draggable superimposed
eq curve. (but i haven't the faintest idea how it is done !) expect
user events from A, send output to displayX:Y, and take the fancy
set of knobs and borders. good luck !"
/>
(ok, this will be a little more abstract in real life ! :)
if i grasped the thing right, XML is just a markup language like
HTML (which will be a subset of XML in the near future), really
generic, really universal.
> BTW, can you recommend an XML summary for a man with very little free
time?
not really. i have my limited knowledge from german magazines (c't
and iX, to be found on http://www.heise.de - there are *some*
articles in english), and i've not yet laid hands on XML myself.
the only source i can think of is the recommendation at
http://www.w3.org .
a validator is at http://www.oasis-open.org/cover/check-xml.html
(these are the DocBook guys).
**
it just struck me that maybe we could get in touch with the mozilla
people for help with xml parsing and rendering. they are heading
towards an xml layout engine, and there will be lots of reusable
code around !
what do you think ?
regards
jorn
-- Jorn Nettingsmeier Kurfurstenstr. 49 45138 Essen, Germany http://www.folkwang.uni-essen.de/~nettings/
This archive was generated by hypermail 2b28 : Sat May 27 2000 - 03:59:56 EEST