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-rw-r--r--dom/media/webvtt/WebVTTParserWrapper.sys.mjs56
1 files changed, 56 insertions, 0 deletions
diff --git a/dom/media/webvtt/WebVTTParserWrapper.sys.mjs b/dom/media/webvtt/WebVTTParserWrapper.sys.mjs
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+++ b/dom/media/webvtt/WebVTTParserWrapper.sys.mjs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { WebVTT } from "resource://gre/modules/vtt.sys.mjs";
+
+export function WebVTTParserWrapper() {
+ // Nothing
+}
+
+WebVTTParserWrapper.prototype = {
+ loadParser(window) {
+ this.parser = new WebVTT.Parser(window, new TextDecoder("utf8"));
+ },
+
+ parse(data) {
+ // We can safely translate the string data to a Uint8Array as we are
+ // guaranteed character codes only from \u0000 => \u00ff
+ var buffer = new Uint8Array(data.length);
+ for (var i = 0; i < data.length; i++) {
+ buffer[i] = data.charCodeAt(i);
+ }
+
+ this.parser.parse(buffer);
+ },
+
+ flush() {
+ this.parser.flush();
+ },
+
+ watch(callback) {
+ this.parser.oncue = callback.onCue;
+ this.parser.onregion = callback.onRegion;
+ this.parser.onparsingerror = function (e) {
+ // Passing the just the error code back is enough for our needs.
+ callback.onParsingError("code" in e ? e.code : -1);
+ };
+ },
+
+ cancel() {
+ this.parser.oncue = null;
+ this.parser.onregion = null;
+ this.parser.onparsingerror = null;
+ },
+
+ convertCueToDOMTree(window, cue) {
+ return WebVTT.convertCueToDOMTree(window, cue.text);
+ },
+
+ processCues(window, cues, overlay, controls) {
+ WebVTT.processCues(window, cues, overlay, controls);
+ },
+
+ classDescription: "Wrapper for the JS WebVTT implementation (vtt.js)",
+ QueryInterface: ChromeUtils.generateQI(["nsIWebVTTParserWrapper"]),
+};