25 Jul
2009
25 Jul
'09
6:40 p.m.
Hi,
Seeing as I'm stuck at home this evening, I'm toying with the idea of
having a go at porting a LADSPA plugin to an LV2 plugin.
Looking at the official doc for LV2 I nearly ran a mile (or ten), but
Lars Luthmans "LV2 programming for the complete idiot" has me almost
convinced I might be able to do it... (( I think this guide should be
promoted more )).
So,
1) Are there any reasons why LADSPA plugins should not be ported to LV2?
2) Is anyone doing this already, and if so which plugins? (aside from
those commonly known as already ported.)
3) Any suggestions for plugins to be ported?
Regards,
James.
26 Jul
26 Jul
8:50 a.m.
On Sat, Jul 25, 2009 at 09:40:09PM +0100, james morris wrote:
Hi,
Hi!
3) Any suggestions for plugins to be ported?
How about autotalent? I haven't tried it, yet, but it's already LADSPA.
Don't know if you could find any added value in making it LV2.
(http://web.mit.edu/tbaran/www/autotalent.html)
And then, there's also jamin. James Warden has been talking about making
it LV2 in April, but I haven't heard of any progress. Perhaps you might
want to jump on the bandwagon.
HTH
PS: I could still use a small channel eq, e.g. four bands with
adjustable characteristics. lv2fil comes pretty close, but I'd like to
change the low band to low shelf and the high band to high shelf. Nedko
has proposed to ask Fons to change the DSP code ;)
--
mail: adi(a)thur.de http://adi.thur.de PGP/GPG: key via keyserver
My computer may be old, but I like the warm glow of tubes.
9:32 a.m.
On 26/7/2009, "" <> wrote:
That one's new to me.
3) Any
suggestions for plugins to be ported?
How about autotalent? I haven't tried it, yet, but it's already LADSPA.
Don't know if you could find any added value in making it LV2.
(http://web.mit.edu/tbaran/www/autotalent.html) And then, there's also jamin. James Warden has been
talking about making
it LV2 in April, but I haven't heard of any progress. Perhaps you might
want to jump on the bandwagon.
HTH
PS: I could still use a small channel eq, e.g. four bands with
adjustable characteristics. lv2fil comes pretty close, but I'd like to
change the low band to low shelf and the high band to high shelf. Nedko
has proposed to ask Fons to change the DSP code ;)
For now I've decided to tackle something relatively simple, just to get
me introduced to working with LV2. As a first _exercise_ I'm working on
porting the Mvclpf1 by Fons Adriaensen, to LV2.
Cheers,
James.
9:44 a.m.
On Sun, Jul 26, 2009 at 12:32:27PM +0100, james morris wrote:
For now I've decided to tackle something
relatively simple, just to get
me introduced to working with LV2. As a first _exercise_ I'm working on
porting the Mvclpf1 by Fons Adriaensen, to LV2.
Note that all the Mvcflpf* were designed as modules for
AMS and that makes them somewhat special. AMS uses audio
rate signals for modulation waveforms (envelopes etc).
The plugins subsample these at 1/16 rate, using the
*last* value in each segment, and then interpolate
them.
The only real audio rate signals are the main in/out
(the first two IIRC).
Ciao,
--
FA
Io lo dico sempre: l'Italia è troppo stretta e lunga.
10:36 a.m.
On 26/7/2009, "Fons Adriaensen" <fons(a)kokkinizita.net> wrote:
Note that all the Mvcflpf* were designed as modules
for
AMS and that makes them somewhat special. AMS uses audio
rate signals for modulation waveforms (envelopes etc).
Yeah, I think better start over and find a straight-forward FX plugin.
(unfortunately i wasn't acquainted with mvcflpf*s, hence the
misconception about their simplicity).
Thanks,
James.
27 Jul
27 Jul
3:08 p.m.
On Sun, 2009-07-26 at 13:37 +0200, Fons Adriaensen wrote:
On Sun, Jul 26, 2009 at 12:32:27PM +0100, james morris
wrote:
This can be reasonably represented with the port groups extension so any
host can do the reasonable thing.
That said: Some other convention for "audio ports that are actually
controls" might be good, but I've basically been assuming that some more
powerful extension for 'CV' ports and such will come along anyway... and
audio/control rate polymorphism... That dichotomy from LADSPA (and
consequent mess of different versions of the same plugins) really sucks.
It must die. :)
-dr
For now I've decided to tackle something
relatively simple, just to get
me introduced to working with LV2. As a first _exercise_ I'm working on
porting the Mvclpf1 by Fons Adriaensen, to LV2.
Note that all the Mvcflpf* were designed as modules for
AMS and that makes them somewhat special. AMS uses audio
rate signals for modulation waveforms (envelopes etc).
26 Jul
26 Jul
9:34 a.m.
On Sun, Jul 26, 2009 at 12:50:50PM +0200, Adrian Knoth wrote:
PS: I could still use a small channel eq, e.g. four
bands with
adjustable characteristics. lv2fil comes pretty close, but I'd like to
change the low band to low shelf and the high band to high shelf. Nedko
has proposed to ask Fons to change the DSP code ;)
No need to do that, just set the frequency to the
lowest / highest value, bandwidth in the upper 1/3
range e voilà : shelf filters.
Ciao,
--
FA
Io lo dico sempre: l'Italia è troppo stretta e lunga.
28 Jul
28 Jul
11:30 p.m.
james morris schrieb:
[ snip ]
3) Any suggestions for plugins to be ported
Hi,
yea
http://www.suse.de/~mana/ladspa.html
They are kind of broken because they disrespect the ladspa naming
guidelines. The code should be fine.
Regards
Uli
11:40 p.m.
Re: the general topic of this thread:
For the record, there is source for a partial LADSPA->LV2 porting tool
in the SLV2 source tree. It will generate the bulk of an LV2 data file
from a LADSPA plugin (note it won't do the whole job, which isn't really
possible to do automatically).
It's not currently built, but if someone wants to use it for bulk
porting (rather than porting by hand for experience's sake) let me know
and I can fix that easily enough.
Cheers,
-dr
29 Jul
29 Jul
5:07 a.m.
On Wed, Jul 29, 2009 at 03:30:12AM +0200, Ulrich Lorenz Schlüter wrote:
Which reminds me of using calf (or libprolooks) for the GUI. The most
visible difference between LADSPA and LV2 might be a decent graphical
interface, so the LV2 version of a plugin should have one. ;)
In order not to reinvent the wheel multiple times, calf or libprolooks
might save some time.
Just my €0.02
--
mail: adi(a)thur.de http://adi.thur.de PGP/GPG: key via keyserver
3) Any
suggestions for plugins to be ported
Hi,
yea
http://www.suse.de/~mana/ladspa.html
8 a.m.
On 29/7/2009, "Ulrich Lorenz Schlüter" <audio-mobster(a)gmx.de> wrote:
Ok, but I've already started porting Nick Lamb's NJL plugins because
they're straight forward. The vcf-0.0.5 can be next (unless I get
sidetracked and decide to implement my own noise generator LV2 plugin).
It's gonna be a slow (experiential) process though, in the past I've
almost exclusively written my own code and not looked in-depth at the
code of others.
James.
3) Any
suggestions for plugins to be ported
http://www.suse.de/~mana/ladspa.html
They are kind of broken because they disrespect the ladspa naming
guidelines. The code should be fine.
2:03 p.m.
On Wed, 2009-07-29 at 11:00 +0100, james morris wrote:
On 29/7/2009, "Ulrich Lorenz Schlüter"
<audio-mobster(a)gmx.de> wrote:
Ok, but I've already started porting Nick Lamb's NJL plugins because
they're straight forward. The vcf-0.0.5 can be next (unless I get
sidetracked and decide to implement my own noise generator LV2 plugin).
Yay vcf!
These stupid things having the same ID for different versions has caused
me pain for years :) I like 'em though...
Cheers,
-dr
3) Any
suggestions for plugins to be ported
http://www.suse.de/~mana/ladspa.html
They are kind of broken because they disrespect the ladspa naming
guidelines. The code should be fine.
5393
days inactive
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linux-audio-dev@lists.linuxaudio.org
11 comments
5 participants
participants (5)
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adi＠drcomp.erfurt.thur.de -
David Robillard -
Fons Adriaensen -
james morris -
Ulrich Lorenz Schlüter