V4L2_MEMORY_USERPTR example for iMX8QM

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V4L2_MEMORY_USERPTR example for iMX8QM

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Contributor I

Hello everyone,

 

I'm programming V4L2  using Linux 4.19.35, on an evaluation board MCIMX8QM-CPU.

The camera uses MX8X MIPI4CAM2.


So the question is, is it possible to use the V4L2_MEMORY_USERPTR feature of V4L2?
Or, if you have a sample source somewhere, please let me know.

Currently, I can capture using V4L2_MEMORY_USERPTR, but when I look at the capture screen, it is black. We are currently investigating at what level the black screen is displayed.

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