Video and Image Processing Suite User Guide

ID 683416
Date 2/12/2021
Public

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11.5. Handling of Non-Image Avalon-ST Packets

The Color Plane Sequencer II IP core also handles Avalon-ST Video packets other than video data packets to the output(s).
You can forward Avalon-ST Video packets other than video data packets to the output(s) with these options:
  • Avalon-ST Video control packets from input stream 1 are always dropped.
  • Avalon-ST Video control packets from input stream 0 may be either propagated or dropped depending on the IP parameterization but the last control packet received before the image packet on input stream 0 is always propagated on all enabled outputs and its width may be altered.
  • Input user packets can be dropped or forwarded to either or both outputs.
Note: When the color pattern of a video data packet changes from the input to the output side of a block, the IP core may pad the end of non-video user packets with extra data. Intel recommends that when you define a packet type where the length is variable and meaningful, you send the length at the start of the packet. User data is never truncated but there is no guarantee that the packet length will be preserved or even rounded up to the nearest number of output color planes.