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Resizing decoded image on DM368

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Posted by John Anderson

on Jul 27 2012 16:27 PM

Genius5165 points

I would like to resize the decoded image to match the display resolution. The H.264 decoder outputs a 420SP image. But it appears the resizer cannot accept a 420SP image. From looking at the source in the kernel it seems it can resize either the Y or the C images.

I'm using DMAI and my question is.... Can I call Resize_config and then Resize_execute twice for each image buffer I get from the decoder? This would be once for Y and once for C. I would have to create cloned reference buffers to get the dimensions and buffer size/location dynamically assigned for both the source and destination buffers.

Since this seems to be quite and exercise I'd like to know that it will work before forging ahead. If I can call config and execute twice for each display buffer, can it be done in real time? Is calling config going to slow things down?

JohnA

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Posted by Marko Shink

on Jul 27 2012 18:30 PM

Genius3695 points

Hi John,
Maybe you can look at example: /examples-davinci/imp-prev-rsz/dm365/do_resize_420_420.c
in : linux-driver-examples-psp03.01.01.38.tar.gz
from : http://arago-project.org/git/projects/?p=examples-davinci.git;a=summary (under tags)

Regards,
Marko.

Posted by John Anderson

on Aug 06 2012 14:08 PM

Genius5165 points

Thanks Marko,

I downloaded the file and am taking a look at it now.

JohnA

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