wip: lv2 support?

src/device/plugin.rs

@@ -1,8 +1,18 @@
 use crate::prelude::*;
 
+mod lv2;
+mod vst2;
+mod vst3;
+
 pub struct Plugin {
     name:   String,
-    plugin: Option<::vst::host::PluginInstance>
+    plugin: Option<PluginKind>
+}
+
+enum PluginKind {
+    VST2(::vst::host::PluginInstance),
+    VST3,
+    LV2(::livi::Plugin),
 }
 
 impl Plugin {
@@ -11,12 +21,9 @@ impl Plugin {
             name: name.into(),
             plugin: None,
         });
-        let mut loader = ::vst::host::PluginLoader::load(
-            &std::path::Path::new("/nix/store/ij3sz7nqg5l7v2dygdvzy3w6cj62bd6r-helm-0.9.0/lib/lxvst/helm.so"),
-            device.state.clone()
-        )?;
-        let plugin = loader.instance()?;
-        device.state.lock().unwrap().plugin = Some(plugin);
+        device.state.lock().unwrap().plugin = Some(self::lv2::plug_in(
+            "file:///nix/store/ij3sz7nqg5l7v2dygdvzy3w6cj62bd6r-helm-0.9.0/lib/lv2/helm.lv2"
+        )?);
         Ok(device)
     }
 }

src/device/plugin/lv2.rs

@@ -0,0 +1,17 @@
+use crate::prelude::*;
+use super::*;
+
+pub fn plug_in (path: &str) -> Usually<PluginKind> {
+    let world = ::livi::World::with_load_bundle(&path);
+    world.build_features(::livi::FeaturesBuilder {
+        min_block_length: 1,
+        max_block_length: 65536,
+    });
+    let mut plugin = None;
+    for p in world.iter_plugins() {
+        plugin = Some(p);
+        break
+    }
+    let result = PluginKind::LV2(plugin.unwrap());
+    Ok(result)
+}

src/device/plugin/vst2.rs

@@ -0,0 +1,11 @@
+use crate::prelude::*;
+use super::*;
+
+fn set_vst_plugin (host: &Arc<Mutex<Plugin>>, path: &str) -> Usually<PluginKind> {
+    let mut loader = ::vst::host::PluginLoader::load(
+        &std::path::Path::new("/nix/store/ij3sz7nqg5l7v2dygdvzy3w6cj62bd6r-helm-0.9.0/lib/lxvst/helm.so"),
+        host.clone()
+    )?;
+    Ok(PluginKind::VST2(loader.instance()?))
+}
+            //"file:///nix/store/ij3sz7nqg5l7v2dygdvzy3w6cj62bd6r-helm-0.9.0/lib/lxvst/helm.so"