parseFromEntryUrl method

Future<HlsParsedResult> parseFromEntryUrl(String entryUrl)

Implementation

Future<HlsParsedResult> parseFromEntryUrl(String entryUrl) async {
  final entryUri = Uri.parse(entryUrl);
  final entryText = (await dio.get<String>(entryUrl, options: Options(responseType: ResponseType.plain))).data ?? '';

  final parser = HlsPlaylistParser.create();
  final entryPlaylist = await parser.parseString(entryUri, entryText);

  String mediaUrl = entryUrl;
  if (entryPlaylist is HlsMasterPlaylist) {
    if (entryPlaylist.variants.isEmpty) throw StateError('Master playlist has no variants.');
    entryPlaylist.variants.sort((a, b) => (b.format.bitrate ?? 0).compareTo(a.format.bitrate ?? 0));
    mediaUrl = entryPlaylist.variants.first.url as String;
  }
  final mediaUri = Uri.parse(mediaUrl);
  final mediaText = (await dio.get<String>(mediaUrl, options: Options(responseType: ResponseType.plain))).data ?? '';
  final mediaPlaylist = await parser.parseString(mediaUri, mediaText);
  if (mediaPlaylist is! HlsMediaPlaylist) throw StateError('Parsed playlist is not a media playlist.');

  KeyInfo? key;
  String? keyUri;
  String? ivHex;
  for (final seg in mediaPlaylist.segments) {
    if (seg.fullSegmentEncryptionKeyUri != null) {
      keyUri = seg.fullSegmentEncryptionKeyUri!;
      ivHex = seg.encryptionIV;
      break;
    }
  }
  if (keyUri != null) {
    key = KeyInfo()
      ..method = 'AES-128'
      ..uri = _absUrl(keyUri, mediaUri)
      ..localName = 'key.bin'
      ..ivHex = ivHex;
  }

  final segments = <Segment>[];
  for (int i = 0; i < mediaPlaylist.segments.length; i++) {
    final s = mediaPlaylist.segments[i];
    final abs = _absUrl(s.url!, mediaUri);
    segments.add(Segment(index: i, duration: s.durationUs ?? 0, remoteUri: abs, localName: 'seg_${(i + 1).toString().padLeft(5, '0')}.ts'));
  }
  int seqBase = 0;
  try {
    final dynamic dyn = mediaPlaylist;
    seqBase = dyn.mediaSequence ?? 0;
  } catch (_) {}
  return HlsParsedResult(segments: segments, key: key, mediaContent: mediaText, mediaBase: mediaUri, mediaSequenceBase: seqBase);
}