Method isConfigSupported

src/video_decoder.ts:150–172

* Checks if the decoder can support the given configuration.

(config: VideoDecoderConfig)

	 * Checks if the decoder can support the given configuration.
	 */
	static async isConfigSupported(config: VideoDecoderConfig): Promise<VideoDecoderSupport> {
		const inferred = inferCodecFromCodecString(config.codec);
		if (!inferred) {
			return { config, supported: false };
		}

		const cacheKey = configToCacheKey(inferred, config.codedWidth!, config.codedHeight!);
		if (configSupportCache.has(cacheKey)) {
			return { config, supported: configSupportCache.get(cacheKey)! };
		}

		using codecContext = this.createCodecContext(config);
		if (!codecContext) {
			return { config, supported: false };
		}

		const ret = await codecContext.open2();
		const supported = ret >= 0;

		configSupportCache.set(cacheKey, supported);

		return { config, supported };
	}

	/**
	 * Configures the decoder with the given configuration.