WordPress at a glance
filter is not described

file_is_displayable_image filter-hook . WP 2.5.0

Filters whether the current image is displayable in the browser.

Usage

add_filter( 'file_is_displayable_image', 'filter_function_name_7322', 10, 2 );
function filter_function_name_7322( $result, $path ){
	// filter...

	return $result;
}
$result(true/false)
Whether the image can be displayed.
Default: true
$path(string)
Path to the image.

Where the hook is called

file_is_displayable_image()
wp-admin/includes/image.php 565
return apply_filters( 'file_is_displayable_image', $result, $path );

Where the hook is used (in WP core)

Does not used.