feat(codec/packet, util/frame): expose time_base fields

src/codec/packet/packet.rs

@@ -106,6 +106,16 @@ impl Packet {
 		self.0.stream_index = index as c_int;
 	}
 
+	#[inline]
+	pub fn time_base(&self) -> Option<Rational> {
+		Rational::from(self.0.time_base).non_zero()
+	}
+
+	#[inline]
+	pub fn set_time_base(&mut self, time_base: Option<impl Into<Rational>>) {
+		self.0.time_base = time_base.map(Into::into).unwrap_or(Rational::ZERO).into();
+	}
+
 	#[inline]
 	pub fn pts(&self) -> Option<i64> {
 		match self.0.pts {

src/util/frame/mod.rs

@@ -10,7 +10,7 @@ pub use self::audio::Audio;
 pub mod flag;
 
 pub use self::flag::Flags;
-use crate::{ffi::*, Dictionary, DictionaryRef, Error};
+use crate::{ffi::*, Dictionary, DictionaryRef, Error, Rational};
 
 #[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub struct Packet {
@@ -102,6 +102,18 @@ impl Frame {
 		}
 	}
 
+	#[inline]
+	pub fn time_base(&self) -> Option<Rational> {
+		unsafe { Rational::from((*self.as_ptr()).time_base).non_zero() }
+	}
+
+	#[inline]
+	pub fn set_time_base(&mut self, time_base: Option<impl Into<Rational>>) {
+		unsafe {
+			(*self.as_mut_ptr()).time_base = time_base.map(Into::into).unwrap_or(Rational::ZERO).into();
+		}
+	}
+
 	#[inline]
 	pub fn pts(&self) -> Option<i64> {
 		unsafe {