/**
* Adds a new frame to the tag and returns it.
*
* @param Zend_Media_Id3_Frame $frame The frame to add.
* @return Zend_Media_Id3_Frame
*/
public function addFrame($frame)
{
$frame->setOptions($this->getOptions());
$frame->setEncoding($this->getOption('encoding', $this->getOption('version', 4) < 4 ? Zend_Media_Id3_Encoding::ISO88591 : Zend_Media_Id3_Encoding::UTF));
if (!$this->hasFrame($frame->getIdentifier())) {
$this->_frames[$frame->getIdentifier()] = array();
}
return $this->_frames[$frame->getIdentifier()][] = $frame;
}