add frominner and intoinner traits

audiotags-dev-macro/src/lib.rs

@@ -40,5 +40,20 @@ macro_rules! impl_tag {
         }
 
         impl AudioTag for $tag {}
+
+        impl From<$tag> for $inner {
+            fn from(inp: $tag) -> Self {
+                inp.inner
+            }
+        }
+
+        impl From<$inner> for $tag {
+            fn from(inp: $inner) -> Self {
+                Self {
+                    inner: inp,
+                    config: Config::default(),
+                }
+            }
+        }
     };
 }

src/components/flac_tag.rs

@@ -1,8 +1,9 @@
 use crate::*;
 use metaflac;
-use metaflac::Tag as InnerTag;
 
-impl_tag!(FlacTag, InnerTag);
+pub use metaflac::Tag as FlacInnerTag;
+
+impl_tag!(FlacTag, FlacInnerTag);
 
 impl<'a> From<AnyTag<'a>> for FlacTag {
     fn from(inp: AnyTag<'a>) -> Self {

src/components/id3_tag.rs

@@ -1,9 +1,9 @@
 use crate::*;
 use id3;
 
-use id3::Tag as InnerTag;
+pub use id3::Tag as Id3v2InnerTag;
 
-impl_tag!(Id3v2Tag, InnerTag);
+impl_tag!(Id3v2Tag, Id3v2InnerTag);
 
 impl<'a> From<&'a Id3v2Tag> for AnyTag<'a> {
     fn from(inp: &'a Id3v2Tag) -> Self {

src/components/mp4_tag.rs

@@ -1,9 +1,9 @@
 use crate::*;
 use mp4ameta;
 
-use mp4ameta::Tag as InnerTag;
+pub use mp4ameta::Tag as Mp4InnerTag;
 
-impl_tag!(Mp4Tag, InnerTag);
+impl_tag!(Mp4Tag, Mp4InnerTag);
 
 impl<'a> From<&'a Mp4Tag> for AnyTag<'a> {
     fn from(inp: &'a Mp4Tag) -> Self {

tests/inner.rs

@@ -0,0 +1,15 @@
+use audiotags::*;
+
+#[test]
+fn test_inner() {
+    let mut innertag = metaflac::Tag::default();
+    innertag
+        .vorbis_comments_mut()
+        .set_title(vec!["title from metaflac::Tag"]);
+    let tag: FlacTag = innertag.into();
+    let mut id3tag = tag.into_tag(TagType::Id3v2);
+    id3tag.write_to_path("assets/a.mp3").unwrap();
+
+    let id3tag_reload = Tag::default().read_from_path("assets/a.mp3").unwrap();
+    assert_eq!(id3tag_reload.title(), Some("title from metaflac::Tag"));
+}