The Pi itself has some settings that allow rotation and mirroring of the video but it consumes a lot of memory bandwidth because memory is not being accessed sequentially. As a result it only really works with 1 bit per pixel sources.Is this hardware able to rotate the image by 90 degrees and then mirror it ? Or first mirror it and then rotate it by 90 degrees, the order doesn't matter.
signal is almost a standard black and white TV signal
I have some damaged measuring equipment and temporarily I would like to connect an external monitor to it, but it has an unusual way to display image.
If necessary, I can provide more information about the image display parameters.
I do intend to look implementing a specific option where the RGBtoHDMI code will do the rotation instead and that can be more optimised but in the meantime have a read of this github issues thread which documents how to do it:
https://github.com/hoglet67/RGBtoHDMI/issues/412
Statistics: Posted by IanB — Sat Mar 08, 2025 5:53 pm