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reapply embedded subtitle selection

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dirtydishes 2026-05-25 10:45:47 -04:00
parent 892196421c
commit 5fb7e6cc02
4 changed files with 107 additions and 1 deletions
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27
Dreamio/VLCNativePlaybackBackend.swift
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@ -25,6 +25,7 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
private var attachedSubtitleURLs = Set<URL>()
private var didAutoSelectSubtitleTrack = false
private var didUserSelectSubtitleTrack = false
private var autoSelectedSubtitleTrackID: Int32?
override init() {
super.init()
@ -45,6 +46,7 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
attachedSubtitleURLs.removeAll()
didAutoSelectSubtitleTrack = false
didUserSelectSubtitleTrack = false
autoSelectedSubtitleTrackID = nil
let media = VLCMedia(url: request.playbackURL)
let headerValue = request.headers
.map { "\($0.key): \($0.value)" }
@ -105,6 +107,7 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
func selectSubtitleTrack(id: Int32) {
#if canImport(MobileVLCKit)
didUserSelectSubtitleTrack = true
autoSelectedSubtitleTrackID = nil
#if DEBUG
logSubtitleTracks(reason: "before-select-\(id)")
#endif
@ -270,10 +273,33 @@ final class VLCNativePlaybackBackend: NSObject, NativePlaybackBackend {
}
didAutoSelectSubtitleTrack = true
autoSelectedSubtitleTrackID = track.id
#if DEBUG
print("[DreamioVLC] auto-select subtitle id=\(track.id) name=\(track.name) reason=\(reason)")
#endif
mediaPlayer.currentVideoSubTitleIndex = track.id
scheduleAutoSubtitleSelectionReapply(trackID: track.id)
}
private func scheduleAutoSubtitleSelectionReapply(trackID: Int32) {
[0.3, 1.0, 2.0, 4.0].forEach { delay in
DispatchQueue.main.asyncAfter(deadline: .now() + delay) { [weak self] in
self?.reapplyAutoSelectedSubtitleTrackIfNeeded(reason: "delayed-\(String(format: "%.1f", delay))")
}
}
}
private func reapplyAutoSelectedSubtitleTrackIfNeeded(reason: String) {
guard !didUserSelectSubtitleTrack,
let trackID = autoSelectedSubtitleTrackID,
subtitleTracks.contains(where: { $0.id == trackID }) else {
return
}
mediaPlayer.currentVideoSubTitleIndex = trackID
#if DEBUG
print("[DreamioVLC] reapply subtitle id=\(trackID) reason=\(reason) selected=\(mediaPlayer.currentVideoSubTitleIndex)")
#endif
}
#endif
}
@ -286,6 +312,7 @@ extension VLCNativePlaybackBackend: VLCMediaPlayerDelegate {
#endif
switch mediaPlayer.state {
case .buffering, .playing:
reapplyAutoSelectedSubtitleTrackIfNeeded(reason: stateName(mediaPlayer.state))
onReady?()
onStateChange?()
case .error: