[Plugin: tantan-flickr] FAlbum to tantan shortcode converter

I’m migrating a site from the FAlbum plugin to tantan, but now I’m facing the problem that the shortcodes used by FAlbum to display photos in posts need to be converted to tantan. Those shortcodes look like this:
[fa:p:t=pglost,id=4076338806,j=l,s=s,l=i]

I’ve located the function in the Falbum php files which creates the shortcode, but now I’m helpless on how to convert and actually make it work with tantan (plus, my php skills are limited). I’ve started by replacing $falbum with $TanTanFlickrPlugin, which of course doesn’t do the trick yet. Can anyone here help making it work?

Here’s the code:

<?
function falbum_filter($content) {
	global $TanTanFlickrPlugin;
	$matches = array ();
	$content = preg_replace('<code>\<p>(\[fa:(.*?)\].*?)</p></code>ms', '$1', $content);
	preg_match_all('<code>\[fa:(.*?)\]</code>', $content, $matches);
	for ($i = 0; $i < count($matches[0]); $i ++) {
		$s = '';
		$v = split(":", $matches[1][$i]);
		$style = '';
		$album = '';
		$tag = '';
		$id = '';
		$page = NULL;
		$linkto = '';

		// Defaults
		$size = 'm';
		$float = 'left';

		//Parse Parms
		if (count($v) == 2) {
			$parms = split(",", $v[1]);
			for ($index = 0; $index < sizeof($parms); $index ++) {
				$pv = trim($parms[$index]);
				$p = split("=", $pv);
				switch ($p[0]) {
					case 'a' :
					case 'album' :
						$album = $p[1];
						break;

					case 'j' :
					case 'justification' :
						if ($p[1] == 'left' || $p[1] == 'l') {
							$style = 'float: left; margin: 0px 5px -5px 0px';
						} else
							if ($p[1] == 'right' || $p[1] == 'r') {
								$style = 'float: right; margin: 0px -5px -5px 5px';
							} else {
								$style = 'position: relative; margin: 0 auto; text-align: center;';
							}
						break;

					case 'l' :
					case 'linkto' :
						$linkto = $p[1];
						break;

					case 'id' :
						$id = $p[1];
						break;

					case 'p' :
					case 'page' :
						$page = $p[1];
						break;

					case 's' :
					case 'size' :
						$size = $p[1];
						break;

					case 't' :
					case 'tag' :
						$tag = $p[1];
						break;
				}
			}
		}

		//Parse Action
		switch ($v[0]) {
			case 'a' :
			case 'album' :
				$s = $TanTanFlickrPlugin->show_album_tn($id);
				break;

			case 'r' :
			case 'random' :
				if ($album == '') {
					$s = $TanTanFlickrPlugin->show_random(1, $tag, 1, $size);
				} else {
					$s = $TanTanFlickrPlugin->show_album_tn($album);
				}
				break;

			case 'p' :
			case 'photo' :
				//$album, $tags, $photo, $page, $size
				$s = $TanTanFlickrPlugin->show_single_photo($album, $tag, $id, $page, $size, $linkto);
				break;
		}
		$s = '<div class="falbum-post-box" style="'.$style.'">'.$s.'</div>';
		$content = str_replace($matches[0][$i], $s, $content);
	}
	return $content;
}
?>