Video and Image Processing Suite User Guide

ID 683416
Date 4/04/2022
Document Table of Contents

24.7.2. Buffer Ingress and Egress Overlap

The Warp Lite IP line store introduces multiline latency between ingress of input lines and production of output lines.

This latency extends beyond the end of one input frame to the beginning of the next, if the vertical blanking period is shorter than the line store's latency. The IP cannot stall input data at this point. Therefore, the line store allows storage of input lines from one frame to overlap with the reading of output data for the previous frame.

Therefore, you may issue a stop before frame A is complete and not see the IP stop until frame B is output. The IP starts storing frame B before the IP finishes producing frame A. The IP is producing frame B is when the IP issues the stop and must also produce it.