/**
* Adds a new box into the current box and returns it.
*
* @param Zend_Media_Iso14496_Box $box The box to add
* @return Zend_Media_Iso14496_Box
* @throws Zend_Media_Iso14496_Exception if called on a non-container box
*/
public final function addBox(&$box)
{
if (!$this->isContainer()) {
require_once 'Zend/Media/Iso14496/Exception.php';
throw new Zend_Media_Iso14496_Exception('Box not a container');
}
$box->setParent($this);
$box->setOptions($this->_options);
if (!$this->hasBox($box->getType())) {
$this->_boxes[$box->getType()] = array();
}
return $this->_boxes[$box->getType()][] = $box;
}
