144 lines
3.0 KiB
Dart
144 lines
3.0 KiB
Dart
// lib/metadata/metadata_model.dart
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import 'dart:typed_data';
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/// 从音频文件读取的原始元数据
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class RawMetadata {
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final String title;
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final String artist;
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final String album;
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final List<String> genres;
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final List<String> performers;
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final int year;
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final int trackNumber;
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final int trackTotal;
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final int discNumber;
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final int totalDisc;
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final Duration? duration;
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final Uint8List? artwork;
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const RawMetadata({
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this.title = '',
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this.artist = '',
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this.album = '',
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this.genres = const [],
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this.performers = const [],
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this.year = 0,
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this.trackNumber = 0,
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this.trackTotal = 0,
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this.discNumber = 0,
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this.totalDisc = 0,
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this.duration,
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this.artwork,
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});
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bool get isEmpty =>
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title.isEmpty &&
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artist.isEmpty &&
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album.isEmpty &&
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genres.isEmpty &&
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performers.isEmpty &&
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year == 0;
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bool get isNotEmpty => !isEmpty;
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}
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/// 标准化后的元数据
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class NormalizedMetadata {
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final String title;
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final String artist;
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final String album;
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final List<String> genres;
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final List<String> performers;
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final int year;
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final int trackNumber;
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final int trackTotal;
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final int discNumber;
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final int totalDisc;
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final Duration? duration;
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final Uint8List? artwork;
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const NormalizedMetadata({
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this.title = '',
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this.artist = '',
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this.album = '',
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this.genres = const [],
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this.performers = const [],
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this.year = 0,
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this.trackNumber = 0,
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this.trackTotal = 0,
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this.discNumber = 0,
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this.totalDisc = 0,
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this.duration,
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this.artwork,
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});
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bool get isEmpty =>
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title.isEmpty &&
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artist.isEmpty &&
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album.isEmpty &&
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genres.isEmpty &&
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performers.isEmpty &&
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year == 0;
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bool get isNotEmpty => !isEmpty;
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}
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/// 候选元数据
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class CandidateMetadata {
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final NormalizedMetadata metadata;
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final double confidence;
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final Map<String, double> evidence;
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const CandidateMetadata({
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required this.metadata,
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required this.confidence,
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this.evidence = const {},
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});
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}
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/// 最终确认的元数据
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class FinalMetadata {
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final String title;
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final String artist;
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final String album;
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final String genre;
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final List<String> genres;
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final List<String> performers;
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final int year;
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final int trackNumber;
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final int trackTotal;
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final int discNumber;
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final int totalDisc;
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final Duration? duration;
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final Uint8List? artwork;
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final String source;
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const FinalMetadata({
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this.title = '',
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this.artist = '',
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this.album = '',
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this.genre = '',
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this.genres = const [],
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this.performers = const [],
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this.year = 0,
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this.trackNumber = 0,
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this.trackTotal = 0,
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this.discNumber = 0,
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this.totalDisc = 0,
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this.duration,
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this.artwork,
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this.source = 'unknown',
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});
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bool get isEmpty =>
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title.isEmpty &&
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artist.isEmpty &&
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album.isEmpty &&
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genre.isEmpty &&
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genres.isEmpty &&
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performers.isEmpty &&
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year == 0;
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bool get isNotEmpty => !isEmpty;
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}
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