System Considerations - 1.1 English

Video Warp Processor LogiCORE IP Product Guide (PG396)

Document ID
PG396
Release Date
2022-05-11
Version
1.1 English

The Warp Filter must be configured correctly to operate properly. There should be sufficient memory bandwidth available for this core to function properly. The bandwidth needed (in MB/s) for a memory layer can be calculated with the following equation:

S (Bandwidth required for source image read(MB/s)) = fps × height × stride
D (Bandwidth required for destination image write(MB/s)) = fps × height × stride
R (Bandwidth required for filter parameters read(MB/s)) = fps × height × width × 4
Total bandwidth required(MB/s) = S + D + R

Where, 'fps' is the number of frames per second the IP is operating, 'height' is the height in lines of the image, and 'stride' is the stride in bytes of the image.

Note: Above number is approximate bandwidth requirement. The actual bandwidth requirement varies with the distortion parameters.

For example for a 3840x2160@60 RGB 12-bit video, the bandwidth requirement is calculated as follows:

S = 60 x 2160 x 3840 x 5

D = 60 x 2160 x 3840 x 5

R = 60 x 2160 x 3840 x 4

Total bandwidth required = ~7 GB/s