SRC= to DATA-SRC= converter for lazy loading thumbnails

Hello!
Trying to introduce lazy loading feature on theme's album.php for heavy weighted thumbnails. There are a lot of scripts on the net, helping this approach. Examples: b-lazy responsivelyLazy ...
b-lazy uses following html:

<img class="b-lazy"
         src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
         data-src="images/image.jpg" 
         alt="alt-text"
    />

responsivelyLazy:

<img class="responsively-lazy"
         src="images/image.jpg
                 srcset="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" 
         data-srcset="images/400.jpg 400w, images/400.webp 400w, images/600.jpg 600w, images/1000.jpg 1000w"
         alt="alt-text"
    />

Both replacing attribute src with data-src or srcset and data-srcset for lazy needs. How do i use these scripts with ZP functions like printImageThumb()? Here is the example of lazyload converter for WordPress but howto implement it into Zenphoto?