webcodecs-flv/src/event.js

webcodecs decode flv

export const EventDispatcher = function () {
  // Private vars
  const spec = {};
  spec.dispatcher = {};
  spec.dispatcher.eventListeners = {};

  /**
   * @function addEventListener
   * @desc This function registers a callback function as a handler for the corresponding event. It's shortened form is on(eventType, listener). See the event description in the following table.<br>
   * @instance
   * @memberof Oms.Base.EventDispatcher
   * @param {string} eventType Event string.
   * @param {function} listener Callback function.
   */
  this.addEventListener = function (eventType, listener) {
    if (spec.dispatcher.eventListeners[eventType] === undefined) {
      spec.dispatcher.eventListeners[eventType] = [];
    }
    spec.dispatcher.eventListeners[eventType].push(listener);
  };

  /**
   * @function removeEventListener
   * @desc This function removes a registered event listener.
   * @instance
   * @memberof Oms.Base.EventDispatcher
   * @param {string} eventType Event string.
   * @param {function} listener Callback function.
   */
  this.removeEventListener = function (eventType, listener) {
    if (!spec.dispatcher.eventListeners[eventType]) {
      return;
    }
    var index = spec.dispatcher.eventListeners[eventType].indexOf(listener);
    if (index !== -1) {
      spec.dispatcher.eventListeners[eventType].splice(index, 1);
    }
  };

  /**
   * @function clearEventListener
   * @desc This function removes all event listeners for one type.
   * @instance
   * @memberof Oms.Base.EventDispatcher
   * @param {string} eventType Event string.
   */
  this.clearEventListener = function (eventType) {
    spec.dispatcher.eventListeners[eventType] = [];
  };

  // It dispatch a new event to the event listeners, based on the type
  // of event. All events are intended to be LicodeEvents.
  this.dispatchEvent = function (event) {
    if (!spec.dispatcher.eventListeners[event.type]) {
      return;
    }
    spec.dispatcher.eventListeners[event.type].map(function (listener) {
      listener(event);
    });
  };
};
export class demuxerChange {
  constructor(type, data) {
    this.type = type;
    this.event = data.event; //del modity
    this.data = data.data;
  }
}