Hi Rodolfo
On Wed, 17 Mar 2010, Rodolfo Giometti wrote:
> Hello,
>
> I'm puzzled to know if the pxa_camera driver can manage a data depth
> different from 8 bits.
>
> I'm currently trying to add a camera interface support to my PXA270
> based board with an adv7180 as soc camera device.
>
> For the adv7180 I defined:
>
> static const struct soc_camera_data_format adv7180_colour_formats[] =
> {
> {
> .name = "Planar YUV422 16 bit",
> .depth = 16,
> .fourcc = V4L2_PIX_FMT_YUV422P,
> .colorspace = V4L2_COLORSPACE_JPEG,
> }
> };
first, you're working with an outdated kernel, don't think I'll be able to
help you with that.
> but this is rejected by the pxa_camera driver buswidth_supported().
>
> On the other hands if I set .depth = 8 in above struct I get the
> following:
Please, update your kernel to the current state. YUV422P is not supported
by pxa natively, so, it can only be handled in the pass-through mode.
Further, adv7180 is currently unsuitable for soc-camera, you have to
modify it after updating to the current kernel. Then please show us your
patch for adv7180, then we'll try to help you further.
> debian:~# gst-launch v4l2src ! video/x-raw-yuv,width=320,height=240 !
> filesink location=/tmp/video.raw
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> WARNING: from element /pipeline0/v4l2src0: Could not get parameters on
> device '/dev/video0'
> Additional debug info:
> v4l2src_calls.c(1172): gst_v4l2src_set_capture ():
> /pipeline0/v4l2src0:
> system error: Invalid argument
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> WARNING: from element /pipeline0/v4l2src0: Got unexpected frame size
> of 76800 instead of 153600.
> Additional debug info:
> gstv4l2src.c(1077): gst_v4l2src_get_mmap (): /pipeline0/v4l2src0
> WARNING: from element /pipeline0/v4l2src0: Got unexpected frame size
> of 76800 instead of 153600.
>
> That is the pax_camera device returns 8bits per pixel instead of 16...
>
> Can you please help me in finding what's wrong? :'(
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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