Restructured project for separate plugins

dsp/src/ring_buffer.rs

@@ -0,0 +1,38 @@
+use std::ops::{Index, IndexMut};
+
+pub struct RingBuffer<T, const N: usize> {
+    buffer: [T; N],
+    index: usize,
+}
+
+impl<T, const N: usize> RingBuffer<T, N>
+where
+    T: Copy,
+{
+    pub const fn new(value: T) -> Self {
+        Self {
+            buffer: [value; N],
+            index: 0,
+        }
+    }
+    pub const fn len(&self) -> usize {
+        N
+    }
+    pub fn shift(&mut self) {
+        self.index = (self.index + 1) % N;
+    }
+
+}
+impl<T, const N: usize> Index<usize> for RingBuffer<T, N> {
+    type Output = T;
+
+    fn index(&self, index: usize) -> &Self::Output {
+        &self.buffer[(self.index + index) % N]
+    }
+}
+
+impl<T, const N: usize> IndexMut<usize> for RingBuffer<T, N> {
+    fn index_mut(&mut self, index: usize) -> &mut Self::Output {
+        &mut self.buffer[(self.index + index) % N]
+    }
+}