apply_filters( ‘wp_calculate_image_srcset_meta’, array $image_meta, int[] $size_array, string $image_src, int $attachment_id )

Parameters

$image_metaarray

The image meta data as returned by ‘wp_get_attachment_metadata() ‘.

$size_arrayint[]

An array of requested width and height values.

• 0 int
  The width in pixels.
• 1 int
  The height in pixels.

$image_srcstring

The 'src' of the image.

$attachment_idint

The image attachment ID or 0 if not supplied.