WordPress at a glance
filter is not described

wp_get_attachment_image_src filter-hook . WP 4.3.0

Filters the image src result.

Usage

add_filter( 'wp_get_attachment_image_src', 'filter_function_name_8515', 10, 4 );
function filter_function_name_8515( $image, $attachment_id, $size, $icon ){
	// filter...

	return $image;
}
$image(array/false)
Either array with src, width & height, icon src, or false.
$attachment_id(int)
Image attachment ID.
$size(string/array)
Size of image. Image size or array of width and height values (in that order).
Default: 'thumbnail'
$icon(true/false)
Whether the image should be treated as an icon.
Default: false

Where the hook is called

wp_get_attachment_image_src()
wp-includes/media.php 851
return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon );

Where the hook is used (in WP core)

Does not used.