feat(FEC-13946): Player core - Use shaka preload mechanism during playlist playback

karma.conf.js

@@ -41,7 +41,7 @@ module.exports = function (config) {
     client: {
       mocha: {
         reporter: 'html',
-        timeout: 5000
+        timeout: 50000
       }
     }
   });

package.json

@@ -56,7 +56,7 @@
     "@babel/runtime": "^7.23.6",
     "@microsoft/api-extractor": "^7.38.0",
     "@playkit-js/browserslist-config": "1.0.8",
-    "@playkit-js/playkit-js": "canary",
+    "@playkit-js/playkit-js": "0.84.10-canary.0-fa40833",
     "@types/chai": "^4.3.3",
     "@types/mocha": "^9.1.1",
     "@types/sinon": "^10.0.20",
@@ -78,7 +78,7 @@
     "karma-webpack": "^5.0.0",
     "mocha": "^10.0.0",
     "prettier": "^3.0.3",
-    "shaka-player": "4.7.0",
+    "shaka-player": "4.8.11",
     "sinon": "^14.0.0",
     "sinon-chai": "^3.7.0",
     "standard-version": "^6.0.1",
@@ -89,7 +89,7 @@
     "webpack-dev-server": "^4.15.1"
   },
   "peerDependencies": {
-    "@playkit-js/playkit-js": "canary",
+    "@playkit-js/playkit-js": "0.84.10-canary.0-fa40833",
     "shaka-player": "4.7.0"
   },
   "browserslist": [

src/cache/asset-cache.ts

@@ -0,0 +1,57 @@
+class AssetCache {
+  private shakaInstance: shaka.Player | null = null;
+
+  private cacheQueue = new Set<string>();
+  private cache = new Map<string, any>();
+
+  public init(shakaInstance: shaka.Player): void {
+    this.clearCache();
+    this.shakaInstance = shakaInstance;
+    this.preloadAssets();
+  }
+
+  public add(assetUrl: string): void {
+    if (this.cache.has(assetUrl)) return;
+
+    this.cacheQueue.add(assetUrl);
+    this.preloadAssets();
+  }
+
+  public get(assetUrl: string): Promise<any> | null {
+    return this.cache.get(assetUrl) || null;
+  }
+
+  public list(): string[] {
+    return [...this.cache.keys()];
+  }
+
+  public remove(assetUrl: string, destroy: boolean = false): void {
+    if (this.cacheQueue.has(assetUrl)) {
+      this.cacheQueue.delete(assetUrl);
+    } else if (this.cache.has(assetUrl)) {
+      const assetPromise = this.cache.get(assetUrl);
+      if (destroy) {
+        assetPromise.then(preloadMgr => preloadMgr.destroy());
+      }
+      this.cache.delete(assetUrl);
+    }
+  }
+
+  private clearCache(): void {
+    const assetUrls = this.cache.keys();
+    for (const assetUrl of assetUrls) {
+      this.remove(assetUrl, true);
+    }
+  }
+
+  private preloadAssets(): void {
+    if (!this.shakaInstance) return;
+
+    for (const assetUrl of this.cacheQueue) {
+      this.cache.set(assetUrl, this.shakaInstance.preload(assetUrl));
+      this.cacheQueue.delete(assetUrl);
+    }
+  }
+}
+
+export {AssetCache};