apply_filters( 'attachment_max_dims' )

1945	if ( !$src = get_attachment_icon_src( $post->ID, $fullsize ) )1946		return false;1947 1948	list($src, $src_file) = $src;1949 1950	// Do we need to constrain the image?1951	if ( ($max_dims = apply_filters('attachment_max_dims', $max_dims)) && file_exists($src_file) ) {1952 1953		$imagesize = wp_getimagesize($src_file);1954 1955		if (($imagesize[0] > $max_dims[0]) || $imagesize[1] > $max_dims[1] ) {1956			$actual_aspect = $imagesize[0] / $imagesize[1];1957			$desired_aspect = $max_dims[0] / $max_dims[1];