[libcamera-devel] libcamera on pinephone

[Kieran Bingham]

Quoting Eric Curtin via libcamera-devel (2022-06-22 12:38:50)
> On Tue, 21 Jun 2022 at 22:57, Pavel Machek via libcamera-devel
> <libcamera-devel at lists.libcamera.org> wrote:
> >
> > Hi!
> >
> > > > Could you print the length of all planes and see how they look like in
> > > > memory ? Also note that the two planes have the same fd so they
> > > > seem to be contiguous in memory if I'm not mistaken ?
> >
> > That may be above my skill level (sorry).
> >
> > > We really need data offset support for V4L2 buffer planes in the V4L2
> > > API :-S See http://lore.kernel.org/linux-media/20200804192939.2251988-3-helen.koike@collabora.com/
> > >
> >
> > But I understood enough to realize that I420 is problematic, switched
> > to 1280x720-BA810x31384142 and now I have... something ;-).
> >
> > I do have some captured files. It does _not_ end in success. I'd like
> > to see what I'm getting, and I guess viewfinder would be useful.
> >
> > Dependency SDL2 found: YES 2.0.22 (cached)
> > Dependency SDL2_image found: YES 2.0.5 (cached)
> > Run-time dependency qt5 (modules: Core, Gui, Widgets) found: NO (tried pkgconfig)
> >
> > README.rst does not mention sdl. I believe it should?
> 
> I can add this, SDL support was very recently added.
> 
> >
> > for cam: [optional]
> >         libevent-dev
> >
> > mobian at mobian:~/g/libcamera$ LIBCAMERA_LOG_FILE=/tmp/camera.log LIBCAMERA_LOG_LEVELS=*:DEBUG build/src/cam/c\
> > am -c 1 -I --capture=50  -S
> > Using camera /base/i2c-csi/rear-camera at 4c as cam0
> > 0: 1280x720-SBGGR8
> >  * Pixelformat: SBGGR8 (1280x720)-(1280x720)/(+1,+1)
> >   - 1280x720
> > Unsupported pixel format SBGGR8
> > Failed to configure frame sink
> > Failed to start camera session
> > mobian at mobian:~/g/libcamera$
> >
> > Hmm. Is SDL not able to display SBGGR8? Is there anything else I can
> > try before trying to play with gstreamer?
> 
> SDL sink at present only supports YUYV and MJPEG, because they are the
> only cameras I physically have and can test with.
> 
> ls src/cam/sdl_texture*
> 
> It would be cool to add more display/capture pixel format combinations alright.

NV12 would be really beneficial I think!
--
Kieran


> 
> 
> >
> > Thanks and best regards,
> >                                                         Pavel
> > --
> > People of Russia, stop Putin before his war on Ukraine escalates.
>