1 files changed, 36 insertions, 0 deletions
diff --git a/src/monitor.rs b/src/monitor.rs
new file mode 100644
index 0000000..bef3fbc
--- /dev/null
+++ b/src/monitor.rs
@@ -0,0 +1,36 @@
+use super::*;
+use synth::SampleBuffer;
+use std::collections::HashMap;
+
+pub struct VoiceDatum {
+    pitch: Pitch,
+    ampl: f32,
+}
+
+pub enum Datum {
+    Voices(Vec<VoiceDatum>),
+    Samples(SampleBuffer),
+    Playtime(f32, f32),
+}
+
+pub enum DatumKind {
+    Voices,
+    Samples,
+    Playtime,
+}
+
+impl<'a> From<&'a Datum> for DatumKind {
+    fn from(d: &'a Datum) -> DatumKind {
+        match *d {
+            Datum::Voices(_) => DatumKind::Voices,
+            Datum::Samples(_) => DatumKind::Samples,
+            Datum::Playtime(_, _) => DatumKind::Playtime,
+        }
+    }
+}
+
+pub type Data = HashMap<DatumKind, Datum>;
+
+pub trait Monitor {
+    fn process(&mut self, data: &Data);
+}