Convert Music to ogg/vorbis and load in build.rs (#14)

Reviewed-on: #14
Co-authored-by: Dominic <git@msrd0.de>
Co-committed-by: Dominic <git@msrd0.de>

build.rs

@@ -17,6 +17,9 @@ struct Assets {
 	/// of the constant storing their png.
 	assets: BTreeMap<String, String>,
 
+	/// Sound assets.
+	sound_assets: BTreeMap<String, String>,
+
 	/// Asset groups contained within  this asset group, mapping their name to the assets
 	/// that group contains.
 	groups: BTreeMap<String, Box<Assets>>
@@ -37,15 +40,19 @@ impl AssetsWriter {
 		}
 	}
 
-	fn add_png<P: AsRef<Path>>(
+	fn asset_name<P: AsRef<Path>>(canonical_path: P) -> String {
+		let mut hasher = DefaultHasher::new();
+		canonical_path.as_ref().hash(&mut hasher);
+		let hash = hasher.finish();
+		format!("ASSET_{hash:X}")
+	}
+
+	fn add_png<P: AsRef<Path> + Copy>(
 		&mut self,
 		canonical_path: P,
 		png: tiny_skia::Pixmap
 	) -> String {
-		let mut hasher = DefaultHasher::new();
-		canonical_path.as_ref().hash(&mut hasher);
-		let hash = hasher.finish();
-		let const_name = format!("ASSET_{hash:X}");
+		let const_name = Self::asset_name(canonical_path);
 
 		let out_dir = env::var_os("OUT_DIR").unwrap();
 		let out_dir: PathBuf = out_dir.into();
@@ -62,6 +69,18 @@ impl AssetsWriter {
 		const_name
 	}
 
+	fn add_ogg<P: AsRef<Path> + Copy>(&mut self, canonical_path: P) -> String {
+		let const_name = Self::asset_name(canonical_path);
+		writeln!(self.file, "// {}", canonical_path.as_ref().display()).unwrap();
+		writeln!(
+			self.file,
+			"const {const_name}: &[u8] = include_bytes!(\"{}\");",
+			canonical_path.as_ref().display()
+		)
+		.unwrap();
+		const_name
+	}
+
 	fn finish(mut self) {
 		fn write_assets_struct(
 			file: &mut File,
@@ -85,6 +104,13 @@ impl AssetsWriter {
 					asset_name.to_snake_case()
 				)?;
 			}
+			for asset_name in root.sound_assets.keys() {
+				writeln!(
+					file,
+					"{indent}\tpub {}: comfy::Sound,",
+					asset_name.to_snake_case()
+				)?;
+			}
 			for group_name in root.groups.keys() {
 				writeln!(
 					file,
@@ -101,6 +127,9 @@ impl AssetsWriter {
 			for asset_const_name in root.assets.values() {
 				writeln!(file, "{indent}\t\tc.load_texture_from_bytes({asset_const_name:?}, {asset_const_name});")?;
 			}
+			for asset_const_name in root.sound_assets.values() {
+				writeln!(file, "{indent}\t\tcomfy::load_sound_from_bytes({asset_const_name:?}, {asset_const_name}, Default::default());")?;
+			}
 			for group_name in root.groups.keys() {
 				writeln!(file, "{indent}\t\t{group_name}::Assets::load(c);")?;
 			}
@@ -118,6 +147,13 @@ impl AssetsWriter {
 					asset_name.to_snake_case()
 				)?;
 			}
+			for (asset_name, asset_const_name) in &root.sound_assets {
+				writeln!(
+					file,
+					"{indent}\t{}: comfy::sound_id({asset_const_name:?}),",
+					asset_name.to_snake_case()
+				)?;
+			}
 			for group_name in root.groups.keys() {
 				writeln!(
 					file,
@@ -170,6 +206,8 @@ fn process_dir<P: AsRef<Path> + Copy>(
 			groups.pop();
 		} else if path.extension().map(|ext| ext == "svg").unwrap_or(false) {
 			process_svg(&path, dir, writer, groups);
+		} else if path.extension().map(|ext| ext == "ogg").unwrap_or(false) {
+			process_ogg(&path, dir, writer, groups);
 		}
 	}
 }
@@ -196,7 +234,8 @@ fn process_svg<P: AsRef<Path> + Copy, Q: AsRef<Path>>(
 	resvg::render(&tree, transform, &mut pixmap.as_mut());
 
 	let const_name = writer.add_png(
-		file.as_ref()
+		&file
+			.as_ref()
 			.canonicalize()
 			.expect("Failed to canonicalize"),
 		pixmap
@@ -218,3 +257,33 @@ fn process_svg<P: AsRef<Path> + Copy, Q: AsRef<Path>>(
 		const_name
 	);
 }
+
+fn process_ogg<P: AsRef<Path> + Copy, Q: AsRef<Path>>(
+	file: P,
+	dir: Q,
+	writer: &mut AssetsWriter,
+	groups: &[String]
+) {
+	let const_name = writer.add_ogg(
+		&file
+			.as_ref()
+			.canonicalize()
+			.expect("Failed to canonicalize")
+	);
+	let mut group = &mut writer.root;
+	for group_name in groups {
+		if !group.groups.contains_key(group_name) {
+			group.groups.insert(group_name.to_owned(), Box::default());
+		}
+		group = group.groups.get_mut(group_name).unwrap();
+	}
+	group.sound_assets.insert(
+		file.as_ref()
+			.file_stem()
+			.expect("File doesn't have a stem")
+			.to_str()
+			.expect("Non-UTF8 file names aren't allowed")
+			.into(),
+		const_name
+	);
+}