Add conversions between borrowed/owned data

src/id3/v2/frame/id.rs

@@ -59,7 +59,16 @@ impl<'a> FrameID<'a> {
 		Ok(())
 	}
 
-	pub(super) fn into_owned(self) -> FrameID<'static> {
+	/// Obtains a borrowed instance
+	pub fn as_borrowed(&'a self) -> Self {
+		match self {
+			Self::Valid(inner) => Self::Valid(Cow::Borrowed(inner)),
+			Self::Outdated(inner) => Self::Outdated(Cow::Borrowed(inner)),
+		}
+	}
+
+	/// Obtains an owned instance
+	pub fn into_owned(self) -> FrameID<'static> {
 		match self {
 			Self::Valid(inner) => FrameID::Valid(Cow::Owned(inner.into_owned())),
 			Self::Outdated(inner) => FrameID::Outdated(Cow::Owned(inner.into_owned())),

src/mp4/atom_info.rs

@@ -35,17 +35,19 @@ pub enum AtomIdent<'a> {
 }
 
 impl<'a> AtomIdent<'a> {
-	pub(crate) fn as_borrowed(&'a self) -> Self {
+	/// Obtains a borrowed instance
+	pub fn as_borrowed(&'a self) -> Self {
 		match self {
-			Self::Fourcc(fourcc) => AtomIdent::Fourcc(*fourcc),
-			Self::Freeform { mean, name } => AtomIdent::Freeform {
+			Self::Fourcc(fourcc) => Self::Fourcc(*fourcc),
+			Self::Freeform { mean, name } => Self::Freeform {
 				mean: Cow::Borrowed(&mean),
 				name: Cow::Borrowed(&name),
 			},
 		}
 	}
 
-	pub(crate) fn into_owned(self) -> AtomIdent<'static> {
+	/// Obtains an owned instance
+	pub fn into_owned(self) -> AtomIdent<'static> {
 		match self {
 			Self::Fourcc(fourcc) => AtomIdent::Fourcc(fourcc),
 			Self::Freeform { mean, name } => AtomIdent::Freeform {

src/mp4/ilst/atom.rs

@@ -109,8 +109,8 @@ impl<'a> Atom<'a> {
 	}
 
 	/// Returns the atom's [`AtomIdent`]
-	pub fn ident(&self) -> AtomIdent<'_> {
-		self.ident.as_borrowed()
+	pub fn ident(&self) -> &AtomIdent<'_> {
+		&self.ident
 	}
 
 	/// Returns the atom's [`AtomData`]