Working on integrating the EventWindowing into HexoDSP

src/nodes/note_buffer.rs

@@ -4,6 +4,19 @@
 
 use crate::dsp::MAX_BLOCK_SIZE;
 
+#[derive(Debug, Clone, Copy)]
+pub struct TimedEvent {
+    /// The frame number in the current block by the audio driver or plugin API/DAW
+    timing: usize,
+    kind: MidiEvent,
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum MidiEvent {
+    NoteOn  { channel: u8, note: u8, vel: f32 },
+    NoteOff { channel: u8, note: u8, vel: f32 },
+}
+
 #[derive(Debug, Clone, Copy)]
 pub struct NoteChannelState {
     pub vel: f32,
@@ -84,6 +97,44 @@ impl NoteBuffer {
     }
 }
 
+struct EventWindowing {
+    pub event: Option<TimedEvent>,
+}
+
+impl EventWindowing {
+    pub fn new() -> Self {
+        Self {
+            event: None,
+        }
+    }
+
+    #[inline]
+    pub fn feed_me(&self) -> bool {
+        self.event.is_none()
+    }
+
+    #[inline]
+    pub fn feed(&mut self, event: TimedEvent) {
+        self.event = Some(event);
+    }
+
+    #[inline]
+    pub fn next_event_in_range(&mut self, to_time: usize) -> Option<NoteEvent> {
+        let to_time = to_time as u32;
+
+        if let Some(event) = self.event.take() {
+            if event.timing() < to_time {
+                return Some(event);
+            } else {
+                self.event = Some(event);
+            }
+        }
+
+        None
+    }
+}
+
+
 #[cfg(test)]
 mod tests {
     use super::*;