[LAU] Ardour custom plugins system exposition

[Rui Nuno Capela]

On 10/27/2016 07:45 AM, david wrote:
> On 10/26/2016 05:56 PM, jonetsu wrote:
>> On Thu, 27 Oct 2016 02:55:58 +0100
>> Yassin Philip <philcm at gnu.org> wrote:
>>
>>> On 26/10/2016 17:53, jonetsu wrote:
>>
>>>> In this case Qsynth should provide the same functionality, and
>>>> perhaps more.  I wonder what is the need to use the a-plugins
>>>> outside of Ardour.
>>
>>> There is no QSynth  plugin that I know of. At the moment, for my
>>> soundfont needs, I use Calf FluidSynth, it does the job but no
>>> envelop control, that sort of things. So, that's an example of need.
>>
>> http://qsynth.sourceforge.net/
>>
>> I used it a lot at one point in time.  In conjunction with Seq24 for
>> instance:
>>
>> https://soundcloud.com/nominal6/c2016-c12c
>>
>> Can load many instruments, has reverb and chorus.
>
> Hmm, I see no Qsynth plugin there. I see QSynth. How does one use it as
> a plugin?
>

short answer: you don't. qsynth has no plugin form whatsoever.

though, there are the current alternatives:
a. fluidsynth-dssi: works on qtractor; no dice on ardour.
b. calf-fluidsynth (lv2): works on both, qtractor and ardour.
c. a-fluidsynth (lv2): same as above, but no gui here (stock/generic 
host ui applies).

looking into the later, as Hanspeter already stated, you can load it and 
work with it onto every lv2 host you can think about, provided you set 
LV2_PATH environment variable appropriately

eg. export LV2_PATH="/usr/local/lib/ardour5/LV2:$LV2_PATH"
(nb. in my case, ardour5 is installed below /usr/local; ymmv).

once set permanently (maybe on .profile or .bashrc) you may find Ardour 
Team's plugins from any other lv2 host, like say, qtractor (which i 
think is what you're after;)

ps. i've tested and it works, although i kind of fail to make the 
a-fluidsynth reverb settings to work somehow. chorus yes. reverb nope. 
maybe's my bad, maybe already fixed upstream. anyway, as far as i can 
tell, it really doesn't give you access to most of the internal sf2 
controls. but again, for that matter, neither do calf, qsynth or 
fluidsynth-dssi.

hth.
cheers
-- 
rncbc aka. Rui Nuno Capela