Make pixel wise operation on framebuffer

JustinChou — Fri, 05 Feb 2021 10:16:21 GMT

Platform: IMX6 Android 4.4.2

I would make pixel wise operation on framebuffer (/dev/graphic/fb0, how to modify the driver? I want to resize, pan and rotate the content of framebuffer.

I have a Unity application program which will generate 1920x1080px60 LVDS output but it need to be warped, and I think software de-warping is an available solution.

Should I modify framebuffer driver directly? If I could look into some code examples that would be great.

Make pixel wise operation on framebuffer

joanxie — Mon, 08 Feb 2021 08:10:38 GMT

pls refer to the enclosed sample code, hope helpful for you

This sample code for CSC settings for /dev/fb1.

It can calculating the CSC matrix and updates in real time from given parameters(Brightness,Contrast,Saturation,Hue, and gamma).

topic Make pixel wise operation on framebuffer in i.MX Processors

Make pixel wise operation on framebuffer

Make pixel wise operation on framebuffer