fix: resolve compilation errors in plugin and engine code

Co-authored-by: aider (deepseek/deepseek-coder) <aider@aider.chat>

src/lib.rs

@@ -1,14 +1,14 @@
 use nih_plug::prelude::*;
 
 mod engine;
-use engine::{Engine, ClipState};
+use engine::Engine;
 
 /// The main plugin struct
 pub struct ClipLauncher {
     /// The engine managing clips
     engine: Engine,
     /// Pending MIDI output events
-    pending_midi: Vec<NoteEvent>,
+    pending_midi: Vec<NoteEvent<f32>>,
 }
 
 impl Default for ClipLauncher {
@@ -50,7 +50,7 @@ impl Plugin for ClipLauncher {
         _context: &mut impl InitContext<Self>,
     ) -> bool {
         self.engine = Engine::new(
-            _audio_io_layout.main_input_channels.map(|c| c.get()).unwrap_or(2),
+            _audio_io_layout.main_input_channels.map(|c| c.get() as usize).unwrap_or(2),
             buffer_config.sample_rate,
         );
         true
@@ -71,23 +71,25 @@ impl Plugin for ClipLauncher {
         // Process MIDI input events
         while let Some(event) = context.next_event() {
             match event {
-                NoteEvent::NoteOn { timing, note, velocity, channel } => {
-                    let output_velocity = self.engine.process_midi_note(note, velocity, true);
+                NoteEvent::NoteOn { timing, note, velocity, channel, voice_id } => {
+                    let output_velocity = self.engine.process_midi_note(note, velocity as u8, true);
                     // Queue output MIDI event
                     self.pending_midi.push(NoteEvent::NoteOn {
                         timing,
                         note,
-                        velocity: output_velocity,
+                        velocity: output_velocity as f32,
                         channel,
+                        voice_id,
                     });
                 }
-                NoteEvent::NoteOff { timing, note, velocity, channel } => {
-                    let output_velocity = self.engine.process_midi_note(note, velocity, false);
+                NoteEvent::NoteOff { timing, note, velocity, channel, voice_id } => {
+                    let output_velocity = self.engine.process_midi_note(note, velocity as u8, false);
                     self.pending_midi.push(NoteEvent::NoteOff {
                         timing,
                         note,
-                        velocity: output_velocity,
+                        velocity: output_velocity as f32,
                         channel,
+                        voice_id,
                     });
                 }
                 _ => {}
@@ -96,7 +98,7 @@ impl Plugin for ClipLauncher {
 
         // Process audio
         for channel_samples in buffer.iter_samples() {
-            let (input, mut output) = channel_samples;
+            let (input, mut output) = channel_samples.split();
             let num_samples = input.len();
             
             // Process this block
@@ -118,11 +120,17 @@ impl Plugin for ClipLauncher {
 
 /// Empty params struct (no parameters needed for this plugin)
 #[derive(Params)]
-struct ClipLauncherParams;
+struct ClipLauncherParams {
+    /// Placeholder parameter to satisfy the derive macro
+    #[id = "dummy"]
+    dummy: BoolParam,
+}
 
 impl Default for ClipLauncherParams {
     fn default() -> Self {
-        Self
+        Self {
+            dummy: BoolParam::new("Dummy", false),
+        }
     }
 }