IMX Scaler / CSC m2m driver.
Jean-Michel Hautbois
jhautbois at gmail.com
Tue Mar 24 09:44:11 PDT 2015
Hi,
2015-03-24 16:51 GMT+01:00 Ian Molton <imolton at ad-holdings.co.uk>:
> I've done some timings and discovered that an actual image
> scaling takes about 3-4 hundredths of a second.
>
> This is only barely fast enough - is this expected behaviour?
> it doesnt look like the driver does anything between kicking
> off the frame and the completion interrupt, so I can only
> assume the hardware is /that/ slow.
If this is really the hardware scaler, it clearly is not correct.
I had it doing 1080p conversion in ~10ms.
Can you use a perf command in order to see all bottlnecks ?
What is your pipeline right now exactly ?
JM
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