WIP

src/mpeg-ts/mpeg-ts-demuxer.ts

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+import { Demuxer } from "../demuxer";
+import { Input } from "../input";
+import { InputTrack } from "../input-track";
+import { Bitstream } from "../misc";
+import { readBytes, Reader, readU24Be, readU8 } from "../reader";
+
+export class MpegTsDemuxer extends Demuxer {
+	reader: Reader;
+
+	metadataPromise: Promise<void> | null = null;
+
+	constructor(input: Input) {
+		super(input);
+
+		this.reader = input._reader;
+	}
+
+	async readMetadata() {
+		return this.metadataPromise ??= (async () => {
+			for (let i = 0; i < 2; i++) {
+				this.readPacket(188 * i);
+			}
+		})();
+	}
+
+	async getTracks(): Promise<InputTrack[]> {
+		await this.readMetadata();
+		return [];
+	}
+
+	async readPacket(pos: number) {
+		let slice = this.reader.requestSlice(pos, 188);
+		if (slice instanceof Promise) slice = await slice;
+
+		if (!slice) {
+			return null;
+		}
+
+		const bitstream = new Bitstream(readBytes(slice, 3));
+		const syncByte = bitstream.readBits(8);
+		const transportErrorIndicator = bitstream.readBits(1);
+		const payloadUnitStartIndicator = bitstream.readBits(1);
+		const transportPriority = bitstream.readBits(1);
+		const pid = bitstream.readBits(13);
+		const transportScramblingControl = bitstream.readBits(2);
+		const adaptationFieldControl = bitstream.readBits(2);
+		const continuityCounter = bitstream.readBits(4);
+
+		console.log(syncByte, transportErrorIndicator, payloadUnitStartIndicator, transportPriority, pid, transportScramblingControl, adaptationFieldControl, continuityCounter);
+	}
+}