LV2 questions

Codeman · April 21, 2017, 11:37am

Hi,

I haven’t found a forum especially for LV2 development - so sorry for my noise here.

Perhaps one of the LV2 experts can give me an answer for this: If I have a LV2-synth-plugin and want to organize the different sounds as filenames (because I have no LV2 control ports for all the parameters) - how can I do this?

An example: I want to keep a list of filenames in my presets.ttl and choose one of them as sound. The plugin should load the sound data (e.g. a sample or a configuration file) from this file. How to arrange this? Is there an example online where I can take a look at?

Thanks, Holger

ssj71 · April 21, 2017, 3:32pm

I have a plugin that loads preset files that you can reference. Ask if something doesn’t make sense.

github.com

ssj71/reMID.lv2/blob/master/src/remid.ttl#L22


@prefix pg: <http://lv2plug.in/ns/ext/port-groups#> .
@prefix param: <http://lv2plug.in/ns/ext/parameters#> .
@prefix units: <http://lv2plug.in/ns/extensions/units#> .
@prefix pprops: <http://lv2plug.in/ns/ext/port-props#> .
@prefix urid:  <http://lv2plug.in/ns/ext/urid#> .
@prefix worker:  <http://lv2plug.in/ns/ext/worker#> .
@prefix state:  <http://lv2plug.in/ns/ext/state#> .
@prefix patch: <http://lv2plug.in/ns/ext/patch#> .




<http://github.com/ssj71/reMID.lv2/blob/master/instruments/instruments.conf>
a lv2:Parameter ;
rdfs:label "intrument file" ;
rdfs:range atom:Path ;
.
<polyphony>
a lv2:Parameter ;
rdfs:range atom:Int ;
.
<chip_type>
a lv2:Parameter ;

There are no forums but there is a developer mailing list and an #lv2 IRC channel on freenode.

Codeman · April 22, 2017, 7:09am

Hi @ssj71

many thanks! I will take a look a this.

Regards, Holger

ludicrouSpeed · February 28, 2021, 12:54am

Hi fam,

I have one question here about LV2 Plugins:

I’m guessing that LV2 plugins have to be compiled or somehow ported to the Mod Device format in order to be compatible? I have no idea how to do that stuff, but just seeking clarification. Thank you.

falkTX · February 28, 2021, 9:26am

Yes, you need to target each device individually.
This is done with GitHub - moddevices/mod-plugin-builder: MOD Plugin Builder, which basically cross-compiles stuff for you (in a toolchain that matches 99% what is running inside the units)