first version of blip

src/blip.rs

@@ -0,0 +1,18 @@
+use crate::note::Note;
+
+/// thanks to Rumple_Frumpkins from Bitsy Talk for his help in figuring out the blip format.
+#[derive(Debug, Clone, PartialEq)]
+pub struct Blip {
+    id: String,
+    notes: Vec<Note>,
+    name: Option<String>,
+    /// Attack (ms), Decay (ms), Sustain (level: 1-15), Hold (sustain duration, ms), Release (ms)
+    envelope: [u8; 5],
+    /// first value is milliseconds per note;
+    /// second value is a modifier to the first note (add or subtract milliseconds)
+    beat: [i16; 2],
+    /// I think this is probably pulse width. apparently the potential values are P2, P4 and P8.
+    square: String,
+    /// Notes can sound repeatedly, or just once as the blip fades out.
+    repeat: bool,
+}