Samsung S5PC110 Manual page 1736

S5PC110_UM 11 10BIMAGE ROTATOR
11.5 IMAGE ROTATION WITH WINDOWS OFFSET
Image rotator supports image rotation with window offset function. It is useful function to move from a small
portion of a large image, to move in a portion of a large image.
Figure 11-3 Source Image Example (with window offset function)
Figure 11-4 Destination Image Example (90 degree rotated with window offset function)
11-4