Function libheif_sys::heif_image_handle_get_list_of_metadata_block_IDs

pub unsafe extern "C" fn heif_image_handle_get_list_of_metadata_block_IDs(
    handle: *const heif_image_handle,
    type_filter: *const c_char,
    ids: *mut heif_item_id,
    count: c_int
) -> c_int

‘type_filter’ can be used to get only metadata of specific types, like “Exif”. If ‘type_filter’ is NULL, it will return all types of metadata IDs.