Method configureInternal

src/video_encoder.ts:274–304

(config: VideoEncoderConfig)

	}

	private async configureInternal(config: VideoEncoderConfig) {
		const currentConfigId = this.currentConfigId;

		using lock = this.mutex.lock();
		if (lock.pending) await lock.ready;

		// Check if reset/close happened while waiting for lock
		if (this.currentConfigId !== currentConfigId) {
			return;
		}

		// Spec 6.5: If supported is false, queue a task to run the Close VideoEncoder algorithm with NotSupportedError.
		// Emulated by trying to open the context.

		if (this.codecContext) {
			this.codecContext.freeContext();
			this.codecContext = null;
		}

		this.codecContext = VideoEncoderPolyfill.createCodecContext(config);
		if (!this.codecContext) {
			throw new DOMException('Unsupported configuration', 'NotSupportedError');
		}

		const ret = await this.codecContext.open2();
		if (ret < 0) {
			throw new DOMException('Failed to open codec', 'NotSupportedError');
		}

		this.config = config;
	}

	/**
	 * Queues a video frame to be encoded.