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perf(metadata): avoid SAF copies during quality probes

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zarzet
2026-07-28 01:50:41 +07:00
parent 26570792a9
commit 80d9d87870
7 changed files with 186 additions and 3 deletions
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lib/utils/audio_format_utils.dart
+33
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@@ -3,6 +3,39 @@ import 'package:spotiflac_android/utils/string_utils.dart';
/// Audio format/quality helpers shared by the download queue and history
/// providers.
Map<String, dynamic> normalizeScannedAudioMetadata(
Map<String, dynamic> metadata,
) {
dynamic firstValue(String snakeCase, String camelCase) {
final snakeValue = metadata[snakeCase];
return snakeValue ?? metadata[camelCase];
}
final normalized = <String, dynamic>{...metadata};
final metadataFromFilename = metadata['metadataFromFilename'] == true;
// readAudioMetadata uses the LibraryScanResult contract. Automatic metadata
// probes use the same snake_case keys as readFileMetadata so callers can use
// the cheaper SAF file-descriptor path without knowing which backend result
// shape was returned.
if (!metadataFromFilename) {
normalized['title'] = firstValue('title', 'trackName');
normalized['artist'] = firstValue('artist', 'artistName');
normalized['album'] = firstValue('album', 'albumName');
}
normalized['album_artist'] = firstValue('album_artist', 'albumArtist');
normalized['date'] = firstValue('date', 'releaseDate');
normalized['track_number'] = firstValue('track_number', 'trackNumber');
normalized['total_tracks'] = firstValue('total_tracks', 'totalTracks');
normalized['disc_number'] = firstValue('disc_number', 'discNumber');
normalized['total_discs'] = firstValue('total_discs', 'totalDiscs');
normalized['bit_depth'] = firstValue('bit_depth', 'bitDepth');
normalized['sample_rate'] = firstValue('sample_rate', 'sampleRate');
normalized['audio_codec'] =
firstValue('audio_codec', 'audioCodec') ?? metadata['format'];
return normalized;
}
int? readPositiveBitrateKbps(dynamic value) {
final parsed = readPositiveInt(value);
if (parsed == null) return null;