Infer mimetype from album art buffer

Cargo.lock

@@ -436,12 +436,29 @@ version = "3.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b1ce199063694f33ffb7dd4e0ee620741495c32833cde5aa08f02a0bf96f0c8"
 
+[[package]]
+name = "byteorder"
+version = "1.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+
 [[package]]
 name = "cc"
 version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"
 
+[[package]]
+name = "cfb"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d38f2da7a0a2c4ccf0065be06397cc26a81f4e528be095826eee9d4adbb8c60f"
+dependencies = [
+ "byteorder",
+ "fnv",
+ "uuid",
+]
+
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
@@ -663,6 +680,7 @@ dependencies = [
  "askama",
  "askama_tide",
  "async-std",
+ "infer 0.13.0",
  "mpdrs",
  "serde",
  "serde_qs 0.12.0",
@@ -733,6 +751,12 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.1.0"
@@ -923,7 +947,7 @@ dependencies = [
  "base64 0.13.1",
  "cookie",
  "futures-lite",
- "infer",
+ "infer 0.2.3",
  "pin-project-lite 0.2.9",
  "rand 0.7.3",
  "serde",
@@ -988,6 +1012,15 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "64e9829a50b42bb782c1df523f78d332fe371b10c661e78b7a3c34b0198e9fac"
 
+[[package]]
+name = "infer"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f551f8c3a39f68f986517db0d1759de85881894fdc7db798bd2a9df9cb04b7fc"
+dependencies = [
+ "cfb",
+]
+
 [[package]]
 name = "instant"
 version = "0.1.12"
@@ -1933,6 +1966,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "uuid"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b55a3fef2a1e3b3a00ce878640918820d3c51081576ac657d23af9fc7928fdb"
+
 [[package]]
 name = "valuable"
 version = "0.1.0"

Cargo.toml

@@ -10,6 +10,7 @@ anyhow = "1.0.70"
 askama = "0.12.0"
 askama_tide = "0.15.0"
 async-std = { version = "1.12.0", features = ["attributes"] }
+infer = "0.13.0"
 mpdrs = "0.1.0"
 serde = { version = "1.0.160", features = ["derive"] }
 serde_qs = "0.12.0"

src/main.rs

@@ -87,7 +87,7 @@ async fn get_player(_req: tide::Request<()>) -> tide::Result {
     };
 
     if let Some(song) = song {
-        let name = song.title.unwrap_or(song.file.clone()).to_string();
+        let name = song.title.unwrap_or(song.file);
         template.name = Some(name);
     }
 
@@ -150,8 +150,13 @@ async fn post_next(_req: tide::Request<()>) -> tide::Result {
 async fn get_art(req: tide::Request<()>) -> tide::Result {
     let query: IndexQuery = req.query()?;
     let resp = if let Ok(art) = mpd::connect()?.albumart(&query.path) {
+        let mime = infer::get(&art)
+            .map(|k| k.mime_type())
+            .unwrap_or("application/octet-stream");
+
         tide::Response::builder(tide::StatusCode::Ok)
             .body(art)
+            .content_type(mime)
             .header("cache-control", "max-age=3600")
     } else {
         tide::Response::builder(tide::StatusCode::NotFound)