util/rational: add Rational

src/lib.rs

@@ -8,3 +8,4 @@ extern crate ffmpeg_sys as ffi;
 pub mod util;
 pub use util::error::Error;
 pub use util::dictionary::Dictionary;
+pub use util::rational::Rational;

src/util/mod.rs

@@ -1,5 +1,6 @@
 pub mod dictionary;
 pub mod error;
+pub mod rational;
 
 use std::ffi::CStr;
 use std::str::from_utf8_unchecked;

src/util/rational.rs

@@ -0,0 +1,14 @@
+use ffi::*;
+
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
+pub struct Rational(pub AVRational);
+
+impl Rational {
+	pub fn numerator(&self) -> i32 {
+		self.0.num
+	}
+
+	pub fn denominator(&self) -> i32 {
+		self.0.den
+	}
+}