WIP: not sure

src/engine/link.rs

@@ -37,12 +37,12 @@ impl LinkState {
     }
 
     pub fn quantum(&self) -> f64 {
-        f64::from_bits(self.quantum.load(Ordering::Relaxed))
+        f64::from_bits(self.quantum.load(Ordering::Acquire))
     }
 
     pub fn set_quantum(&self, quantum: f64) {
         let clamped = quantum.clamp(1.0, 16.0);
-        self.quantum.store(clamped.to_bits(), Ordering::Relaxed);
+        self.quantum.store(clamped.to_bits(), Ordering::Release);
     }
 
     pub fn clock_micros(&self) -> i64 {
@@ -86,4 +86,10 @@ impl LinkState {
         self.link.capture_app_session_state(&mut state);
         state
     }
+
+    pub fn beat_at_time(&self, time_us: i64, quantum: f64) -> f64 {
+        let mut state = SessionState::new();
+        self.link.capture_app_session_state(&mut state);
+        state.beat_at_time(time_us, quantum)
+    }
 }