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feat: support YouTube VTT subtitle selection

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Valdemar Høgsvig Lorenzen
2026-10-27 13:05:56 +01:00
parent a2c8cc8e4d
commit 0641859d95
12 changed files with 449 additions and 25 deletions
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Checks/automatic-quality-playback.swift
+16 -2
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@@ -68,7 +68,8 @@ struct AutomaticQualityPlaybackChecks {
until(model, "compact mode remains usable across empty playback polls while resolving") {
model.isCompact && !model.compactWindow.isTransitioning
}
require(window.level == .floating && window.frame.width < normalFrame.width,
require(model.compactWindow.presentationWindow!.level == .floating &&
model.compactWindow.presentationWindow!.frame.width < normalFrame.width,
"unresolved video has a usable compact window")
model.handleKey(compactKey)
until(model, "compact shortcut restores while YouTube resolution is still pending") {
@@ -86,7 +87,8 @@ struct AutomaticQualityPlaybackChecks {
require(model.isCompact, "loading completion preserves the requested compact mode")
until(model, "decoded metadata updates compact geometry") {
!model.compactWindow.isTransitioning &&
abs(window.frame.width / window.frame.height - model.state.video_aspect_ratio) < 0.01
abs(model.compactWindow.presentationWindow!.frame.width / model.compactWindow.presentationWindow!.frame.height -
model.state.video_aspect_ratio) < 0.01
}
model.handleKey(compactKey)
until(model, "compact shortcut restores during network buffering") {
@@ -100,6 +102,12 @@ struct AutomaticQualityPlaybackChecks {
polled(model)
require(model.youtubeHeight == 1080 && !model.resolvingStream,
"disabled automatic quality leaves a stalled manual/default stream alone")
let captionCountURL = URL(string: ProcessInfo.processInfo.environment["TEREBI_CAPTION_COUNT"]!)!
require(try! String(contentsOf: captionCountURL, encoding: .utf8) == "0",
"Off never requests captions during extraction or playback")
require(model.selectedSubtitle == nil && model.subtitleTracks.count == 1, "YouTube captions default Off")
model.selectSubtitle(0)
until(model, "selected original-auto VTT loads through native HTTP") { model.subtitleText == "Automatic caption" }
model.setAutomaticYouTubeQuality(true)
polled(model)
let position = model.state.position
@@ -110,11 +118,16 @@ struct AutomaticQualityPlaybackChecks {
}
require(model.state.position >= position,
"automatic quality reopening does not reset acknowledged progress")
until(model, "automatic downshift restores the selected caption") { model.subtitleText == "Automatic caption" }
require(model.selectedSubtitle == 0, "automatic downshift retains caption identity")
polled(model)
clock.now = 2063
until(model, "sustained health automatically restores actual 1080p media") {
model.youtubeHeight == 1080 && model.canTogglePlayback && model.state.status == PLAYER_PLAYING && !model.state.seek_pending
}
until(model, "automatic upshift restores the selected caption") { model.subtitleText == "Automatic caption" }
require(model.selectedSubtitle == 0, "automatic upshift retains caption identity")
model.selectSubtitle(nil)
model.setYouTubeQuality(model.youtubeHeight)
require(!model.automaticYouTubeQuality && !model.isBusy && model.state.status == PLAYER_PLAYING,
"reselecting the current manual resolution disables auto without disrupting playback")
@@ -134,6 +147,7 @@ struct AutomaticQualityPlaybackChecks {
model.youtubeHeight == 720 && model.canChangeYouTubeQuality && model.state.status == PLAYER_PLAYING &&
!model.state.seek_pending && (model.bufferedRange.map { $0.upperBound - model.state.position >= 20 } ?? false)
}
require(model.selectedSubtitle == nil && model.subtitleText.isEmpty, "manual changes preserve Off after automatic changes")
let selectedTitle = model.fileName
let selectedQuality = model.youtubeQuality
mark("gate-1080")