Re: [git:media_tree/master] [media] UVC: Add support for ds4 depth camera

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hello,

On Thursday 03 December 2015 16:18:42 Hans Verkuil wrote:
> On 12/03/15 14:37, Mauro Carvalho Chehab wrote:
> > This is an automatic generated email to let you know that the following
> > patch were queued at the http://git.linuxtv.org/cgit.cgi/media_tree.git
> > tree:
> > 
> > Subject: [media] UVC: Add support for ds4 depth camera
> > Author:  Aviv Greenberg <avivgr@gmail.com>
> > Date:    Fri Oct 16 08:48:51 2015 -0300
> > 
> > Add support for Intel DS4 depth camera in uvc driver.
> > This includes adding new uvc GUIDs for the new pixel formats,
> > adding new V4L pixel format definition to user api headers,
> > and updating the uvc driver GUID-to-4cc tables with the new formats.
> > 
> > Change-Id: If240d95a7d4edc8dcc3e02d58cd8267a6bbf6fcb
> > 
> > Tested-by: Greenberg, Aviv D <aviv.d.greenberg@intel.com>
> > Signed-off-by: Aviv Greenberg <aviv.d.greenberg@intel.com>
> > Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
> > 
> >  drivers/media/usb/uvc/uvc_driver.c | 20 ++++++++++++++++++++
> >  drivers/media/usb/uvc/uvcvideo.h   | 12 ++++++++++++
> >  include/uapi/linux/videodev2.h     |  3 +++
> >  3 files changed, 35 insertions(+)
> > 
> > ---
> > 
> > http://git.linuxtv.org/cgit.cgi/media_tree.git/commit/?id=120c41d3477a23c6
> > 941059401db63677736f1935
> <snip>
> 
> > diff --git a/include/uapi/linux/videodev2.h
> > b/include/uapi/linux/videodev2.h index bd2dc9431ac1..0014529606e2 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -621,6 +621,9 @@ struct v4l2_pix_format {
> > 
> >  #define V4L2_PIX_FMT_JPGL	v4l2_fourcc('J', 'P', 'G', 'L') /* JPEG-Lite 
*/
> >  #define V4L2_PIX_FMT_SE401      v4l2_fourcc('S', '4', '0', '1') /* se401
> >  janggu compressed rgb */ #define V4L2_PIX_FMT_S5C_UYVY_JPG
> >  v4l2_fourcc('S', '5', 'C', 'I') /* S5C73M3 interleaved UYVY/JPEG */> 
> > +#define V4L2_PIX_FMT_Y8I      v4l2_fourcc('Y', '8', 'I', ' ') /*
> > Greyscale 8-bit L/R interleaved */ +#define V4L2_PIX_FMT_Y12I    
> > v4l2_fourcc('Y', '1', '2', 'I') /* Greyscale 12-bit L/R interleaved */
> > +#define V4L2_PIX_FMT_Z16      v4l2_fourcc('Z', '1', '6', ' ') /* Depth
> > data 16-bit */> 
> >  /* SDR formats - used only for Software Defined Radio devices */
> >  #define V4L2_SDR_FMT_CU8          v4l2_fourcc('C', 'U', '0', '8') /* IQ
> >  u8 */
>
> I'm a bit surprised that this got accepted since there is no documentation
> for these new formats.

So am I. And also because I haven't been CC'ed on the patch.

> Building the DocBook should fail because of that.
> 
> Aviv, can you make a patch adding documentation for these new formats? If
> people don't know what the format looks like, then it will be really hard
> to use :-)

As the new formats are related to 3D I expect discussions to follow, which 
might result in a different implementation. I thus don't want to commit to the 
ABI this patch introduces.

-- 
Regards,

Laurent Pinchart