gecko/content/media/webvtt/WebVTTParserWrapper.js
Rick Eyre afa9ff26f8 Bug 895091 - Part 3: Add JS WebVTT parser code in (vtt.js) r=rillian, ted, gwagner, khuey
- Current source code for vtt.js can be found at:
https://github.com/andreasgal/vtt.js
- vtt.js code taken from commit 6bca57d265fc58cff091148b426ec69f576057d7.
2013-09-17 12:31:00 -07:00

64 lines
1.7 KiB
JavaScript

/* 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/. */
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/vtt.jsm");
var Ci = Components.interfaces;
var WEBVTTPARSERWRAPPER_CID = "{1604a67f-3b72-4027-bcba-6dddd5be6b10}";
var WEBVTTPARSERWRAPPER_CONTRACTID = "@mozilla.org/webvttParserWrapper;1";
function WebVTTParserWrapper()
{
// Nothing
}
WebVTTParserWrapper.prototype =
{
loadParser: function(window)
{
this.parser = new WebVTTParser(window, new TextDecoder("utf8"));
},
parse: function(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: function()
{
this.parser.flush();
},
watch: function(callback)
{
this.parser.oncue = callback.onCue;
this.parser.onregion = callback.onRegion;
},
convertCueToDOMTree: function(window, cue)
{
return WebVTTParser.convertCueToDOMTree(window, cue.text);
},
classDescription: "Wrapper for the JS WebVTTParser (vtt.js)",
classID: Components.ID(WEBVTTPARSERWRAPPER_CID),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebVTTParserWrapper]),
classInfo: XPCOMUtils.generateCI({
classID: WEBVTTPARSERWRAPPER_CID,
contractID: WEBVTTPARSERWRAPPER_CONTRACTID,
interfaces: [Ci.nsIWebVTTParserWrapper]
})
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([WebVTTParserWrapper]);