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filter is not described

wp_mime_type_icon filter-hook . WP 2.1.0

Filters the mime type icon.

Usage

add_filter( 'wp_mime_type_icon', 'filter_function_name_5290', 10, 3 );
function filter_function_name_5290( $icon, $mime, $post_id ){
	// filter...

	return $icon;
}
$icon(string)
Path to the mime type icon.
$mime(string)
Mime type.
$post_id(int)
Attachment ID. Will equal 0 if the function passed the mime type.

Where the hook is called

wp_mime_type_icon()
wp-includes/post.php 5662
return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id );

Where the hook is used (in WP core)

Does not used.