wip: refactor into crates

crates/tek_plugin/src/lv2.rs

@@ -0,0 +1,145 @@
+use super::*;
+
+use ::livi::{
+    World,
+    Instance,
+    Plugin as LiviPlugin,
+    Features,
+    FeaturesBuilder,
+    Port,
+    event::LV2AtomSequence,
+};
+
+use ::winit::{
+    application::ApplicationHandler,
+    event::WindowEvent,
+    event_loop::{ActiveEventLoop, ControlFlow, EventLoop},
+    window::{Window, WindowId},
+    platform::x11::EventLoopBuilderExtX11
+};
+
+use ::suil_rs::{self};
+
+use std::thread::{spawn, JoinHandle};
+
+impl Plugin {
+    pub fn lv2 (name: &str, path: &str) -> Usually<JackDevice> {
+        let plugin = LV2Plugin::new(path)?;
+        jack_from_lv2(name, &plugin.plugin)?
+            .run(|ports|Box::new(Self {
+                name:       name.into(),
+                path:       Some(String::from(path)),
+                plugin:     Some(PluginKind::LV2(plugin)),
+                selected:   0,
+                mapping:    false,
+                ports
+            }))
+    }
+}
+
+/// A LV2 plugin.
+pub struct LV2Plugin {
+    pub world:        World,
+    pub instance:     Instance,
+    pub plugin:       LiviPlugin,
+    pub features:     Arc<Features>,
+    pub port_list:    Vec<Port>,
+    pub input_buffer: Vec<LV2AtomSequence>,
+    pub ui_thread:    Option<JoinHandle<()>>,
+}
+
+impl LV2Plugin {
+    pub fn new (uri: &str) -> Usually<Self> {
+        // Get 1st plugin at URI
+        let world    = World::with_load_bundle(&uri);
+        let features = FeaturesBuilder { min_block_length: 1, max_block_length: 65536 };
+        let features = world.build_features(features);
+        let mut plugin = None;
+        for p in world.iter_plugins() {
+            plugin = Some(p);
+            break
+        }
+        let plugin = plugin.unwrap();
+        let err = &format!("init {uri}");
+
+        // Instantiate
+        Ok(Self {
+            world,
+            instance: unsafe {
+                plugin
+                    .instantiate(features.clone(), 48000.0)
+                    .expect(&err)
+            },
+            port_list: {
+                let mut port_list = vec![];
+                for port in plugin.ports() {
+                    port_list.push(port);
+                }
+                port_list
+            },
+            plugin,
+            features,
+            input_buffer: Vec::with_capacity(1024),
+            ui_thread: None
+        })
+    }
+}
+
+pub fn run_lv2_ui (mut ui: LV2PluginUI) -> Usually<JoinHandle<()>> {
+    Ok(spawn(move||{
+        let event_loop = EventLoop::builder().with_x11().with_any_thread(true).build().unwrap();
+        event_loop.set_control_flow(ControlFlow::Wait);
+        event_loop.run_app(&mut ui).unwrap()
+    }))
+}
+
+/// A LV2 plugin's X11 UI.
+pub struct LV2PluginUI {
+    pub window: Option<Window>
+}
+
+impl LV2PluginUI {
+    pub fn new () -> Usually<Self> {
+        Ok(Self { window: None })
+    }
+}
+
+impl ApplicationHandler for LV2PluginUI {
+    fn resumed (&mut self, event_loop: &ActiveEventLoop) {
+        self.window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
+    }
+    fn window_event (&mut self, event_loop: &ActiveEventLoop, id: WindowId, event: WindowEvent) {
+        match event {
+            WindowEvent::CloseRequested => {
+                self.window.as_ref().unwrap().set_visible(false);
+                event_loop.exit();
+            },
+            WindowEvent::RedrawRequested => {
+                self.window.as_ref().unwrap().request_redraw();
+            }
+            _ => (),
+        }
+    }
+}
+
+fn lv2_ui_instantiate (kind: &str) {
+    //let host = Suil
+}
+
+pub fn jack_from_lv2 (name: &str, plugin: &::livi::Plugin) -> Usually<Jack> {
+    let counts = plugin.port_counts();
+    let mut jack = Jack::new(name)?;
+    for i in 0..counts.atom_sequence_inputs {
+        jack = jack.midi_in(&format!("midi-in-{i}"))
+    }
+    for i in 0..counts.atom_sequence_outputs {
+        jack = jack.midi_out(&format!("midi-out-{i}"));
+    }
+    for i in 0..counts.audio_inputs {
+        jack = jack.audio_in(&format!("audio-in-{i}"));
+    }
+    for i in 0..counts.audio_outputs {
+        jack = jack.audio_out(&format!("audio-out-{i}"));
+    }
+    Ok(jack)
+}