ring buffer init

src/main.rs

@@ -3,7 +3,9 @@ use crate::iq_reader::FileSource;
 use std::error::Error;
 
 mod agc;
+mod fir;
 mod iq_reader;
+mod utils;
 
 fn main() -> Result<(), Box<dyn Error>> {
     let source = FileSource::new("test.iq", 32769)?;