i.MX6q de-interlacing. Is it working or not?

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i.MX6q de-interlacing. Is it working or not?

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ilyakosharov
Contributor II

Hi everyone!

We are working with i.MX6q processor, boundary-imx_4.1.15_1.0.0_ga.

We are using tvp5150 ADC and capturing V4L2_IF_TYPE_BT656_INTERLACED video.

The CSI->MEM scheme was used.

Camera was producing de-interlace itself so we did not need to de-interlace on i.MX6q.

For now we have changed the camera and have to de-interlace on i.MX6q.

We have tried to apply patch add-csi-deinterlace-capture.patch from here: De-interlace Capture Device ,

and have problems...

Although this patch was working with 3.x.x kernel. 

So the question is:

Do we have de-interlacing "from the box" with modern boundary-imx_4.1.15_2.0.0_ga or boundary-imx_4.9.x_2.0.0_ga ?

Talking about de-interlacing I mean applying de-interlacing process, not just capturing 2 half-frames in one frame. So we need to use VDIC.

Does anybody have successful experience with  VDIC on 4.x.x kernels?

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2 Replies

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Ilya

boundary devices bsps (which are different from nxp official bsps) are supported by

boundarydevices directly, this may be posted on its forums

Wiki - Boundary Devices 

In official nxp bsps for denterlacing one can look at example imx-test/test/mxc_v4l2_test/mxc_v4l2_tvin.c

mxc_v4l2_tvin.c\mxc_v4l2_test\test - imx-test - i.MX Driver Test Application Software 

More nxp linux documentation is porvided on i.mx official software page

i.MX Software|NXP 

Best regards
igor
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ilyakosharov
Contributor II

If I understood you correctly, mxc_v4l2_tvin.c process de-interlacing only for output. 

But I need to use VDI for capture to make further processing with captured frames.

Is somebody has experience with this?

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