Method outputChunk

src/video_encoder.ts:329–432

(currentConfigId: number)

	}

	private outputChunk(currentConfigId: number) {
		if (this.currentConfigId !== currentConfigId) {
			return;
		}

		assert(this.codecContext);
		assert(this.config);

		if (!this.packet.data) {
			return;
		}
		let data: Uint8Array = this.packet.data;

		const needsAnnexBToLengthPrefixConversion
			= (this.codecContext.codecId === AV_CODEC_ID_H264 && this.config.avc?.format !== 'annexb')
				// eslint-disable-next-line @stylistic/max-len
				// eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
				|| (this.codecContext.codecId === AV_CODEC_ID_HEVC && (this.config as any).hevc?.format !== 'annexb');
		if (needsAnnexBToLengthPrefixConversion) {
			data = transformAnnexBToLengthPrefixed(data) ?? data;
		}

		const chunk = new EncodedVideoChunkPolyfill({
			type: this.packet.isKeyframe ? 'key' : 'delta',
			timestamp: Number(this.packet.pts),
			duration: Number(this.packet.duration),
			data,
		});

		let metadata: EncodedVideoChunkMetadata | undefined;
		if (this.chunkOutputted) {
			metadata = {};
		} else {
			let codecString: string;
			let description: Uint8Array | undefined = undefined;

			if (this.codecContext.codecId === AV_CODEC_ID_H264) {
				const record = extractAvcDecoderConfigurationRecord(this.packet.data);
				if (!record) {
					throw new Error('Invalid AVC data, could not extract decoder configuration record.');
				}

				codecString = generateAvcCodecString(record);

				if (this.config.avc?.format !== 'annexb') {
					description = serializeAvcDecoderConfigurationRecord(record);
				}
			} else if (this.codecContext.codecId === AV_CODEC_ID_HEVC) {
				const record = extractHevcDecoderConfigurationRecord(this.packet.data);
				if (!record) {
					throw new Error('Invalid HEVC data, could not extract decoder configuration record.');
				}

				codecString = generateHevcCodecString(record);

				// eslint-disable-next-line @stylistic/max-len
				// eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
				if ((this.config as any).hevc?.format !== 'annexb') {