wip

utils/hls/parseM3U8ForSubtitles.ts

@@ -0,0 +1,55 @@
+import axios from "axios";
+
+export interface SubtitleTrack {
+  index: number;
+  name: string;
+  uri: string;
+  language: string;
+  default: boolean;
+  forced: boolean;
+  autoSelect: boolean;
+}
+
+export async function parseM3U8ForSubtitles(
+  url: string
+): Promise<SubtitleTrack[]> {
+  try {
+    const response = await axios.get(url, { responseType: "text" });
+    const lines = response.data.split(/\r?\n/);
+    const subtitleTracks: SubtitleTrack[] = [];
+    let index = 0;
+
+    lines.forEach((line: string) => {
+      if (line.startsWith("#EXT-X-MEDIA:TYPE=SUBTITLES")) {
+        const attributes = parseAttributes(line);
+        const track: SubtitleTrack = {
+          index: index++,
+          name: attributes["NAME"] || "",
+          uri: attributes["URI"] || "",
+          language: attributes["LANGUAGE"] || "",
+          default: attributes["DEFAULT"] === "YES",
+          forced: attributes["FORCED"] === "YES",
+          autoSelect: attributes["AUTOSELECT"] === "YES",
+        };
+        subtitleTracks.push(track);
+      }
+    });
+
+    return subtitleTracks;
+  } catch (error) {
+    console.error("Failed to fetch or parse the M3U8 file:", error);
+    throw error;
+  }
+}
+
+function parseAttributes(line: string): { [key: string]: string } {
+  const attributes: { [key: string]: string } = {};
+  const parts = line.split(",");
+  parts.forEach((part) => {
+    const [key, value] = part.split("=");
+    if (key && value) {
+      attributes[key.trim()] = value.replace(/"/g, "").trim();
+    }
+  });
+  return attributes;
+}