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feat(FEC-13946): Player core - Use shaka preload mechanism during pla…
…ylist playback
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Original file line number | Diff line number | Diff line change |
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class AssetCache { | ||
private shakaInstance: shaka.Player | null = null; | ||
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private cacheQueue = new Set<string>(); | ||
private cache = new Map<string, any>(); | ||
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public init(shakaInstance: shaka.Player): void { | ||
this.clearCache(); | ||
this.shakaInstance = shakaInstance; | ||
this.preloadAssets(); | ||
} | ||
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public add(assetUrl: string): void { | ||
if (this.cache.has(assetUrl)) return; | ||
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this.cacheQueue.add(assetUrl); | ||
this.preloadAssets(); | ||
} | ||
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public get(assetUrl: string): Promise<any> | null { | ||
return this.cache.get(assetUrl) || null; | ||
} | ||
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public list(): string[] { | ||
return [...this.cache.keys()]; | ||
} | ||
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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); | ||
} | ||
} | ||
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private clearCache(): void { | ||
const assetUrls = this.cache.keys(); | ||
for (const assetUrl of assetUrls) { | ||
this.remove(assetUrl, true); | ||
} | ||
} | ||
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private preloadAssets(): void { | ||
if (!this.shakaInstance) return; | ||
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for (const assetUrl of this.cacheQueue) { | ||
this.cache.set(assetUrl, this.shakaInstance.preload(assetUrl)); | ||
this.cacheQueue.delete(assetUrl); | ||
} | ||
} | ||
} | ||
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export {AssetCache}; |
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