76 lines
1.9 KiB
Dart
76 lines
1.9 KiB
Dart
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import 'dart:async';
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import 'package:fvp/mdk.dart' as mdk;
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import '../../shared/utils/app_logger.dart';
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import 'media_capability_analyzer.dart';
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class MediaProbeService {
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static final MediaProbeService instance = MediaProbeService._();
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MediaProbeService._();
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static const _tag = 'MediaProbe';
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final Map<String, ProbeResult> _cache = {};
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Future<ProbeResult?> probe(
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String url, {
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Duration timeout = const Duration(seconds: 5),
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}) async {
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final cached = _cache[url];
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if (cached != null) {
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AppLogger.debug(_tag, 'probe: cache hit url=${_truncate(url)}');
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return cached;
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}
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AppLogger.debug(_tag, 'probe: start url=${_truncate(url)}');
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mdk.Player? player;
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try {
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player = mdk.Player()
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..setProperty('avio.reconnect', '1')
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..setProperty('avformat.extension_picky', '0')
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..setProperty('avformat.allowed_segment_extensions', 'ALL');
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player.media = url;
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final ret = await player.prepare().timeout(timeout, onTimeout: () => -10);
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ProbeResult? result;
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if (ret >= 0) {
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final video = player.mediaInfo.video;
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if (video != null && video.isNotEmpty) {
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final codec = video.first.codec;
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result = ProbeResult(
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videoCodec: codec.codec.isNotEmpty ? codec.codec : null,
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);
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}
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} else {
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AppLogger.warn(
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_tag,
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'probe: prepare failed ret=$ret url=${_truncate(url)}',
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);
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}
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if (result != null) {
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_cache[url] = result;
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AppLogger.debug(
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_tag,
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'probe: success url=${_truncate(url)} codec=${result.videoCodec}',
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);
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}
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return result;
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} catch (e) {
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AppLogger.warn(_tag, 'probe: error url=${_truncate(url)}', e);
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return null;
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} finally {
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player?.dispose();
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}
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}
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static String _truncate(String url) {
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return url.length > 50 ? '${url.substring(0, 50)}...' : url;
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}
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}
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