35 lines
1,018 B
Dart
35 lines
1,018 B
Dart
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import 'dart:io';
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import 'package:freezer/api/definitions.dart';
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import 'package:just_audio/just_audio.dart';
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class OfflineAudioSource extends StreamAudioSource {
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final File file;
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final StreamInfoCallback? onStreamObtained;
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OfflineAudioSource(this.file, {this.onStreamObtained});
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@override
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Future<StreamAudioResponse> request([int? start, int? end]) async {
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// determine content type
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final first = await file.openRead(0, 4).join();
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bool isFlac = false;
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if (first == 'fLaC') isFlac = true;
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final length = await file.length();
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final stream = file.openRead(start, end);
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this.onStreamObtained?.call(StreamQualityInfo(
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format: isFlac ? Format.FLAC : Format.MP3,
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source: Source.offline,
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quality: null,
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size: length));
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return StreamAudioResponse(
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sourceLength: length,
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contentLength: (end ?? length) - (start ?? 0),
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offset: start,
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stream: stream,
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contentType: isFlac ? 'audio/flac' : 'audio/mpeg');
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}
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}
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