Method isConfigSupported

src/audio_encoder.ts:155–179

* Checks if the encoder can support the given configuration.

(config: AudioEncoderConfig)

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

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

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

		const { codecContext } = result;
		const ret = await codecContext.open2();
		const supported = ret >= 0;
		codecContext.freeContext();

		configSupportCache.set(cacheKey, supported);

		return { config, supported };
	}

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