flash-transmuxer-worker.js
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/**
* @file flash-transmuxer-worker.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _globalWindow = require('global/window');
var _globalWindow2 = _interopRequireDefault(_globalWindow);
var _muxJsLibFlv = require('mux.js/lib/flv');
var _muxJsLibFlv2 = _interopRequireDefault(_muxJsLibFlv);
/**
* Re-emits transmuxer events by converting them into messages to the
* world outside the worker.
*
* @param {Object} transmuxer the transmuxer to wire events on
* @private
*/
var wireTransmuxerEvents = function wireTransmuxerEvents(transmuxer) {
transmuxer.on('data', function (segment) {
_globalWindow2['default'].postMessage({
action: 'data',
segment: segment
});
});
transmuxer.on('done', function (data) {
_globalWindow2['default'].postMessage({ action: 'done' });
});
};
/**
* All incoming messages route through this hash. If no function exists
* to handle an incoming message, then we ignore the message.
*
* @class MessageHandlers
* @param {Object} options the options to initialize with
*/
var MessageHandlers = (function () {
function MessageHandlers(options) {
_classCallCheck(this, MessageHandlers);
this.options = options || {};
this.init();
}
/**
* Our web wroker interface so that things can talk to mux.js
* that will be running in a web worker. The scope is passed to this by
* webworkify.
*
* @param {Object} self the scope for the web worker
*/
/**
* initialize our web worker and wire all the events.
*/
_createClass(MessageHandlers, [{
key: 'init',
value: function init() {
if (this.transmuxer) {
this.transmuxer.dispose();
}
this.transmuxer = new _muxJsLibFlv2['default'].Transmuxer(this.options);
wireTransmuxerEvents(this.transmuxer);
}
/**
* Adds data (a ts segment) to the start of the transmuxer pipeline for
* processing.
*
* @param {ArrayBuffer} data data to push into the muxer
*/
}, {
key: 'push',
value: function push(data) {
// Cast array buffer to correct type for transmuxer
var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
this.transmuxer.push(segment);
}
/**
* Recreate the transmuxer so that the next segment added via `push`
* start with a fresh transmuxer.
*/
}, {
key: 'reset',
value: function reset() {
this.init();
}
/**
* Forces the pipeline to finish processing the last segment and emit its
* results.
*/
}, {
key: 'flush',
value: function flush() {
this.transmuxer.flush();
}
}, {
key: 'resetCaptions',
value: function resetCaptions() {
this.transmuxer.resetCaptions();
}
}]);
return MessageHandlers;
})();
var FlashTransmuxerWorker = function FlashTransmuxerWorker(self) {
self.onmessage = function (event) {
if (event.data.action === 'init' && event.data.options) {
this.messageHandlers = new MessageHandlers(event.data.options);
return;
}
if (!this.messageHandlers) {
this.messageHandlers = new MessageHandlers();
}
if (event.data && event.data.action && event.data.action !== 'init') {
if (this.messageHandlers[event.data.action]) {
this.messageHandlers[event.data.action](event.data);
}
}
};
};
exports['default'] = function (self) {
return new FlashTransmuxerWorker(self);
};
module.exports = exports['default'];