Can I use the resizer (IPIPE) to covert from YUV420P to YUV422ILE

Charvi Mehta

Hi,

We have designed a product using DMVA2 processor from the DM36x family. Now for my application, I want to convert my incoming stream from YUV420P/YUV420SP to YUV422ILE data format.

WIll this be possible using the 'resizer' module in the IPIPE hardware block?

I tried using the 'moduletest' test application with 'drv_resz' function. I configured the test app keeping the inType as YUV420 and outType as YUV422 (Progressive for now). The resizer runs without errors but I am getting corrupted image. Please find a zip attached which contains the original and the corrupted resizer output.

Please help.

0844.TIe2e_attachement.zip

P.S.: I can successfully resize YUV422 to YUV420, using the moduletest application. Is YUV420 to YUV422 conversion through resizer even possible ??

over 9 years ago

0 Prabhakar Lad over 9 years ago

Guru 11260 points

Hi,

The DM36x resizer doesn’t support yuv420 to yuv422 conversion, the resizer can accept yuv420 input just for resizing but not for conversion to yuv422.

Thanks,

--Prabhakar Lad

0 Charvi Mehta over 9 years ago in reply to Prabhakar Lad

Intellectual 450 points

Prabhakar,

Thanks for the reply.

Is there any other module/way through which the 420 to 422 conversion can be achieved in hardware in DMVA2?

Regards,

Charvi

P.S.: I tried converting from 420 to 420 (same resolution, no change) still the output image contains pink lines.

0 Prabhakar Lad over 9 years ago in reply to Charvi Mehta

Guru 11260 points

Hi,

I am not aware of DMVA2 HW, but any components of VPFE from DM36x don’t support this. The only option is to use a sensor spitting out yuv422 itself Or have s/w program that does it for you.

What is the reason for converting it to YUV422 ?

Thanks,

--Prabhakar

0 Charvi Mehta over 9 years ago in reply to Prabhakar Lad

Intellectual 450 points

Prabhakar,

I have a RTSP stream coming on network, I decode it using the decoder which outputs YUV420SP data. I have a custom application to display this data on monitor but it takes only YUV422ILE data. So I need the conversion.

Regards,

Charvi

0 Brijesh Jadav over 9 years ago in reply to Charvi Mehta

TI__Guru**** 397370 points

Why dont you use resizer to upscale chroma 420 to chroma 422? This is i guess simpler.

Rgds,

Brijesh

0 Charvi Mehta over 9 years ago in reply to Brijesh Jadav

Intellectual 450 points

Hi Brijesh,

That is what my original question was about. I did try chroma upscaling using the resizer. But half the image is corrupted and the image is pinkish. Please view the attachment I have provided in the original question.

This made me thinking whether the YUV420 to YUV422 chroma upscaling is even possible? I am reading the VPFE and design docs which do not mention this sort of use case or feature, atleast till yet.

Please guide. Is there any other application/module which can help achieve this ?

Regards,

Charvi.

0 Brijesh Jadav over 9 years ago in reply to Charvi Mehta

TI__Guru**** 397370 points

Can you check if there is YUV420 resizing example with the package?

Rgds,

Brijesh

0 Charvi Mehta over 9 years ago in reply to Brijesh Jadav

Intellectual 450 points

I am using ipnc rdk from IPNC_RDK_DM36x_V5.1.0-Linux-x86-Install.bin. I checked the dvsdk tools directory and the ipnc rdk directory. I could'nt get a 420 to 420 upscale/downscale example.

The moduletest came with the standard 422 to 420 chroma downsampling and resolution downscaling example. Is there any specific directory I should be looking into ?

Regards,

Charvi

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Can I use the resizer (IPIPE) to covert from YUV420P to YUV422ILE