修复 YouTube Music 歌曲在非 YouTube 服务器激活时播放失败#10
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YouTube Music 后端不给歌曲打 serverId 标签, 之前 _serverTypeForExtras 和 _inferBackendTypeFromServer 在缺少 serverId 时会回退到当前激活服务器. 当用户切换到 Subsonic/Jellyfin/Plex 后, 收藏夹里的 YouTube 歌曲会被 错误地路由到这些后端, 视频 ID 在远端查不到就返回 TrackNotFound 404. 现在只在歌曲显式携带 serverId 时才解析后端类型, 没有标签的歌曲一律 走 YouTube Music 路径, 不再受激活服务器影响.
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三个问题叠加导致桌面端所有后端的歌曲都无法播放: 1. play() 重写在桌面端检查 _player.duration, 如果为 0 就重走 playByIndex, 但 media_kit 异步报告 duration, 导致用户点播放时 反复重载歌曲却始终不播放。改为只在 currentSongUrl 为 null 时 才走 playByIndex。 2. playByIndex 和 setSourceNPlay 无条件调用 _player.stop(), 在 media_kit 上 stop+clear+open(new source) 后 play() 无法启动 播放。stop() 当初是为了修复自动切歌时 player 卡在 completed 状态, 现在改为只在 completed 时才 stop。 3. just_audio_media_kit 的 load() 内部调用 _player.pause() 没有 await, 这个 pause 可能在 play() 之后才到达 MPV, 导致播放器最终 处于暂停状态。新增 _ensurePlaybackStarted() 在桌面端延迟 300ms 后检查播放器状态, 如果没在播放就重新发 play()。
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GitLab MR: !90
Original: https://gitlab.com/Openlyst/doudou/-/merge_requests/90
问题 切换到 Subsonic/Jellyfin/Plex 服务器后, 播放收藏夹/最近播放里的 YouTube Music 歌曲会失败, 日志里反复出现:
{"message":"Failed to find specified track","name":"TrackNotFound","statusCode":404}## 原因 YouTube Music 后端从不给歌曲打serverId标签。_serverTypeForExtras和MediaItemBuilder._inferBackendTypeFromServer在缺少serverId时会回退到当前激活的服务器类型。于是当激活服务器是 Subsonic 时, YouTube 视频 ID 被当成 Subsonic track ID 拼进rest/stream.view?id=...请求, 远端查不到就返回 404。 ## 修复 -audio_handler._serverTypeForExtras: 只在歌曲显式携带serverId时才解析后端类型, 否则返回null(走 YouTube Music 路径) -MediaItemBuilder._inferBackendTypeFromServer: 只从显式serverId推断backendType, 不再回退到激活服务器 这样未打标签的歌曲一律按 YouTube Music 处理, 不受当前激活服务器影响。已经带serverId的 Subsonic/Jellyfin/Plex 歌曲不受影响。 #### 验证 -flutter analyze lib/services/audio_handler.dart lib/models/media_Item_builder.dart无问题 ## Summary by CodeRabbit * Bug Fixes * Improved desktop playback reliability when starting songs or switching tracks. * Fixed playback interruptions caused by timing issues during media loading. * Prevented untagged song identifiers from being incorrectly routed through the currently active server. * Unspecified song identifiers now retain YouTube Music behavior by default.