Function addPermSubscription

lib/player_server.js:659–683

(name, perm, serializeFn)

  }

  function addPermSubscription(name, perm, serializeFn) {
    var subscription = self.subscriptions[name] = {
      version: uuid(),
      value: serializeFn(),
      perm: perm,
    };
    return function() {
      var newValue = serializeFn();
      var delta = curlydiff.diff(subscription.value, newValue);
      if (delta === undefined) return; // no delta, nothing to send!
      subscription.value = newValue;
      subscription.version = uuid();
      self.forEachClient(function(client) {
        var clientSubscription = client.subscriptions[name];
        if (clientSubscription === 'simple') {
          client.transport.sendMessage(name, newValue);
        } else if (clientSubscription === 'delta') {
          client.transport.sendMessage(name, {
            version: subscription.version,
            delta: delta,
          });
        }
      });
    };
  }

  function getVolume(client) {
    return self.player.volume;