topic iMX6SX framebuffer image rotation in i.MX Processors

iMX6SX framebuffer image rotation

texnikk — Mon, 22 Oct 2018 13:12:46 GMT

Q: Does anybody know, how can framebuffer rotation be achieved on iMX6SX cpu, which doesn't have IPU?

Because I've found several threads here regarding image rotation, but looks like all solutions require usage of IPU.

Re: iMX6SX framebuffer image rotation

igorpadykov — Mon, 22 Oct 2018 23:42:58 GMT

Hi Serhii

one can look at pxp rotation test

pxp_v4l2_test.c\pxp_v4l2_test\test - imx-test - i.MX Driver Test Application Software

Best regards
igor
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Re: iMX6SX framebuffer image rotation

texnikk — Tue, 23 Oct 2018 08:00:06 GMT

Hi igorpadykov,

Thanks for your reply!

Well, actually I need this rotation be performed by framebuffer driver itself, like it was described in i.MX6 IPU and rotating a frame buffer in framebuffer_rotaion_90_degree_kernel_4.9.patch.zip , not from userspace

Re: iMX6SX framebuffer image rotation

texnikk — Mon, 29 Oct 2018 09:29:25 GMT

So maybe there are any other solutions?

Re: iMX6SX framebuffer image rotation

mtx512 — Mon, 29 Oct 2018 19:59:37 GMT

You can use the PXP engine to rotate a buffer and render back to the frame buffer as shown in this example.