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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/. */
const { WebVTT } = ChromeUtils.import("resource://gre/modules/vtt.jsm");
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"]),
};
var EXPORTED_SYMBOLS = ["WebVTTParserWrapper"];