60 lines
1.8 KiB
Dart
60 lines
1.8 KiB
Dart
import '../../reverse_engineering/models/fragment.dart';
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import 'streams.dart';
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/// YouTube media stream that contains video.
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abstract class VideoStreamInfo extends StreamInfo {
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/// Video codec.
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final String videoCodec;
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/// Video quality label, as seen on YouTube.
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final String videoQualityLabel;
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/// Video quality.
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final VideoQuality videoQuality;
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/// Video resolution.
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final VideoResolution videoResolution;
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/// Video framerate.
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final Framerate framerate;
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///
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VideoStreamInfo(
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int tag,
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Uri url,
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StreamContainer container,
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FileSize size,
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Bitrate bitrate,
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this.videoCodec,
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this.videoQualityLabel,
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this.videoQuality,
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this.videoResolution,
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this.framerate,
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List<Fragment> fragments)
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: super(tag, url, container, size, bitrate, fragments);
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}
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/// Extensions for Iterables of [VideoStreamInfo]
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extension VideoStreamInfoExtension<T extends VideoStreamInfo> on Iterable<T> {
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/// Gets all video qualities available in a collection of video streams.
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Set<VideoQuality> getAllVideoQualities() =>
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map((e) => e.videoQuality).toSet();
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/// Gets video quality labels of all streams available in
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/// a collection of video streams.
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/// This could be longer than [getAllVideoQualities] since this gives also all
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/// the different framerate values.
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Set<String> getAllVideoQualitiesLabel() =>
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map((e) => e.videoQualityLabel).toSet();
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/// Gets the stream with best video quality.
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T withHighestBitrate() => sortByVideoQuality().last;
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/// Gets the video streams sorted by highest video quality
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/// (then by framerate) in ascending order.
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/// This returns new list without editing the original list.
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List<T> sortByVideoQuality() => toList()
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..sort((a, b) => b.framerate.compareTo(a.framerate))
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..sort((a, b) => b.videoQuality.index.compareTo(a.videoQuality.index));
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}
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