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capture opensubtitles text tracks

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dirtydishes 2026-05-25 10:51:52 -04:00
parent 5fb7e6cc02
commit 28f1dc4f8e
4 changed files with 155 additions and 4 deletions
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73
Dreamio/DreamioWebViewController.swift
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@ -199,6 +199,37 @@ final class DreamioWebViewController: UIViewController {
postSubtitleCandidates([candidate]);
};
const inspectTrack = (track) => {
if (!track) {
return;
}
if (track instanceof HTMLTrackElement) {
addSubtitleCandidate({
url: track.src || track.getAttribute("src") || "",
label: track.label || track.srclang || "External Subtitle",
language: track.srclang || ""
});
return;
}
const source = track.src || track.url || "";
if (source) {
addSubtitleCandidate({
url: source,
label: track.label || track.language || track.kind || "External Subtitle",
language: track.language || ""
});
}
};
const inspectTextTracks = (media) => {
try {
Array.from(media.textTracks || []).forEach(inspectTrack);
} catch (_) {}
try {
media.querySelectorAll("track").forEach(inspectTrack);
} catch (_) {}
};
const postSubtitleInspection = (source, url, beforeCount, afterCount, payloadLength) => {
if (afterCount > beforeCount) {
return;
@ -307,11 +338,17 @@ final class DreamioWebViewController: UIViewController {
if (!node) {
return;
}
if (node instanceof HTMLTrackElement) {
inspectTrack(node);
}
if (node instanceof HTMLVideoElement || node instanceof HTMLSourceElement) {
postCandidate(node.currentSrc || node.src || node.getAttribute("src"), node);
}
if (node.querySelectorAll) {
node.querySelectorAll("video, source").forEach(inspectMedia);
node.querySelectorAll("video, source, track").forEach(inspectMedia);
}
if (node instanceof HTMLVideoElement) {
inspectTextTracks(node);
}
};
@ -337,10 +374,34 @@ final class DreamioWebViewController: UIViewController {
});
}
const trackSrcDescriptor = Object.getOwnPropertyDescriptor(HTMLTrackElement.prototype, "src");
if (trackSrcDescriptor && trackSrcDescriptor.set) {
Object.defineProperty(HTMLTrackElement.prototype, "src", {
get: trackSrcDescriptor.get,
set(value) {
addSubtitleCandidate({
url: value,
label: this.label || this.srclang || "External Subtitle",
language: this.srclang || ""
});
return trackSrcDescriptor.set.call(this, value);
}
});
}
const originalSetAttribute = Element.prototype.setAttribute;
Element.prototype.setAttribute = function(name, value) {
if (String(name).toLowerCase() === "src" && (this instanceof HTMLVideoElement || this instanceof HTMLSourceElement)) {
postCandidate(value, this);
if (String(name).toLowerCase() === "src") {
if (this instanceof HTMLVideoElement || this instanceof HTMLSourceElement) {
postCandidate(value, this);
}
if (this instanceof HTMLTrackElement) {
addSubtitleCandidate({
url: value,
label: this.label || this.srclang || "External Subtitle",
language: this.srclang || ""
});
}
}
return originalSetAttribute.call(this, name, value);
};
@ -349,9 +410,13 @@ final class DreamioWebViewController: UIViewController {
HTMLMediaElement.prototype.load = function() {
inspectMedia(this);
this.querySelectorAll("source").forEach(inspectMedia);
inspectTextTracks(this);
return originalLoad.call(this);
};
document.addEventListener("addtrack", (event) => {
inspectTrack(event.track || event.target);
}, true);
document.addEventListener("loadedmetadata", (event) => inspectMedia(event.target), true);
document.addEventListener("error", (event) => inspectMedia(event.target), true);
new MutationObserver((mutations) => {
@ -365,7 +430,7 @@ final class DreamioWebViewController: UIViewController {
childList: true,
subtree: true,
attributes: true,
attributeFilter: ["src"]
attributeFilter: ["src", "label", "srclang"]
});
inspectMedia(document);