97 lines
2.3 KiB
Dart
97 lines
2.3 KiB
Dart
import 'package:xml/xml.dart' as xml;
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import '../retry.dart';
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import 'models/stream_info_provider.dart';
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import 'youtube_http_client.dart';
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///
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class DashManifest {
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static final _urlSignatureExp = RegExp(r'/s/(.*?)(?:/|$)');
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final xml.XmlDocument _root;
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///
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late final Iterable<_StreamInfo> streams = _root
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.findElements('Representation')
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.where((e) => e
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.findElements('Initialization')
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.first
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.getAttribute('sourceURL')!
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.contains('sq/'))
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.map((e) => _StreamInfo(e));
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///
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DashManifest(this._root);
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///
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// ignore: deprecated_member_use
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DashManifest.parse(String raw) : _root = xml.parse(raw);
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///
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static Future<DashManifest> get(YoutubeHttpClient httpClient, dynamic url) {
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return retry(httpClient, () async {
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var raw = await httpClient.getString(url);
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return DashManifest.parse(raw);
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});
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}
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///
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static String? getSignatureFromUrl(String url) =>
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_urlSignatureExp.firstMatch(url)?.group(1);
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}
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class _StreamInfo extends StreamInfoProvider {
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static final _contentLenExp = RegExp(r'[/\?]clen[/=](\d+)');
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final xml.XmlElement root;
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_StreamInfo(this.root);
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@override
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StreamSource get source => StreamSource.dash;
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@override
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late final int tag = int.parse(root.getAttribute('id')!);
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@override
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late final String url = root.getAttribute('BaseURL')!;
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@override
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late final int contentLength = int.parse(
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(root.getAttribute('contentLength') ??
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_contentLenExp.firstMatch(url)?.group(1))!);
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@override
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late final int bitrate = int.parse(root.getAttribute('bandwidth')!);
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@override
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late final String? container = '';
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/*
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Uri.decodeFull((_containerExp.firstMatch(url)?.group(1))!);*/
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late final bool isAudioOnly =
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root.findElements('AudioChannelConfiguration').isNotEmpty;
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@override
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late final String? audioCodec =
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isAudioOnly ? null : root.getAttribute('codecs');
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@override
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late final String? videoCodec =
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isAudioOnly ? root.getAttribute('codecs') : null;
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@override
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late final int videoWidth = int.parse(root.getAttribute('width')!);
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@override
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late final int videoHeight = int.parse(root.getAttribute('height')!);
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@override
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late final int framerate = int.parse(root.getAttribute('framerate')!);
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// TODO: Implement this
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@override
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late final String? videoQualityLabel = null;
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}
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