Re: Nokia N900 cameras -- pipeline setup in python (was Re: [RFC PATCH 00/24] Make Nokia N900 cameras working)

Hi Pavel,

On Tue, Jun 21, 2016 at 08:05:49PM +0200, Pavel Machek wrote:

Hi!

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First, I re-did pipeline setup in python, it seems slightly less hacky
then in shell.

I tried to modify fcam-dev to work with the new interface, but was not
successful so far. I can post patches if someone is interested
(mplayer works for me, but that's not too suitable for taking photos).

I tried to get gstreamer to work, with something like:

While trying to debug gstreamer, I ran v4l2-compliance, and it seems
to suggest that QUERYCAP is required... but it is not present on
/dev/video2 or video6.

It's not saying that it wouldn't be present, but the content appears wrong.
It should have the real bus information there rather than just "media".

See e.g. drivers/media/platform/vsp1/vsp1_drv.c . I suppose that should be
right.

Feel free to submit a patch. :-)

For now I'd not know what to change, sorry :-(. Perhaps we can debug
it after the support is merged into mainline.

A single line change to change the bus field contents to the actual bus
address.

	grep -A1 platform: drivers/media/platform/vsp1/vsp1_drv.c

Another weirdness:

yavta, on v4l-subdev12 :

control 0x00a40906 `Sensivity' min 0 max 0 step 1 default 0 current 65536.

Min and max being the same, I don't think I can control the
sensitivity. I guess I'll have to provid  more light for the tests for
now...

That control should be removed. I think I concluded its value is the same
for all the modes...

-- 
Sakari Ailus
e-mail: sakari.ailus@iki.fi	XMPP: sailus@retiisi.org.uk