Autoscroll with multiple merge images

I am new to SDL.
I need to auto scroll the image with user defined speed. like 10 pixels per seconds , 20 , 30 …50 etc.

Also i have cropped (large image) in to 3 images(parts) like 1.tif, 2.tif and 3.tif

I need to auto scroll the images continuously for example

  1. Autoscroll 1.tif (Start position with Right position.)
  2. Autoscroll 2.tif with 1.tif ending position like tiling
  3. Autoscroll 3.tif with 2.tif ending position

All 3 images are same height but different width.

Kindly do the needful.
Looking forward it.

Many Thanks in Advance.