/**
 * A lightweight stream implemention that handles event dispatching. Objects
 * that inherit from streams should call init in their constructors.
 */
(function(videojs, undefined) {
  var Stream = function() {
    this.init = function() {
      var listeners = {};
      this.on = function(type, listener) {
        if (!listeners[type]) {
          listeners[type] = [];
        }
        listeners[type].push(listener);
      };
      this.off = function(type, listener) {
        var index;
        if (!listeners[type]) {
          return false;
        }
        index = listeners[type].indexOf(listener);
        listeners[type].splice(index, 1);
        return index > -1;
      };
      this.trigger = function(type) {
        var callbacks, i, length, args;
        callbacks = listeners[type];
        if (!callbacks) {
          return;
        }
        args = Array.prototype.slice.call(arguments, 1);
        length = callbacks.length;
        for (i = 0; i < length; ++i) {
          callbacks[i].apply(this, args);
        }
      };
    };
  };
  Stream.prototype.pipe = function(destination) {
    this.on('data', function(data) {
      destination.push(data);
    });
  };

  videojs.hls.Stream = Stream;
})(window.videojs);