Recently in learning to the development of the sea, 3516, see the sea on the data of VPSS works VGS IVE have zoom function, could you tell me what are the three modules is a hardware acceleration support?

Development are mentioned in the manual IVE scale because of the fixed point operation, will lead to the differences and opencv,
So how much is the precision of the fixed point, and how to take the whole? This information is not reflected in the document, still hope each great god grant instruction,