topic Re: glTexDirectVIVMap and YUV420p in i.MX Processors

glTexDirectVIVMap and YUV420p

ortogonal — Fri, 19 Dec 2014 21:47:39 GMT

Hi!
I'm using the VPU to decode HD movie and trying to display the movie by using glTexDirectVIVMap. I have a simple question, and it may have a really simple answer due to my little knowledge about video encoding. But all the sample HD movies I found uses YUV420P colospace and that is not a format that is supportet by glTexDirectVIVMap. How can I solve this? Is it possible to do somethin in the IPU before and make the color space conversion there, or is it possible to write a fragment shader that makes the color conversion.

The result I end up with is a really smooth playing movie but with wrong colors.

Thanks!

Erik

Re: glTexDirectVIVMap and YUV420p

igorpadykov — Thu, 25 Dec 2014 00:28:32 GMT

Hi Erik

colospace conversion can be done by both IPU and GPU,

examples can be found below

https://community.freescale.com/docs/DOC-94961

Freescale/gstreamer-imx · GitHub

AN4629 Fast Image Processing with i.MX 6 Series

gpu - texture for YUV420 to RGB conversion in OpenGL ES - Stack Overflow

Best regards

igor

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