Hi Laurent,
On Wed, Aug 20, 2014 at 07:05:30PM +0200, Laurent Pinchart wrote:
> Hi Hans and Michael,
>
> On Wednesday 20 August 2014 02:06:54 Hans Verkuil wrote:
> > On 08/19/2014 05:01 PM, Laurent Pinchart wrote:
> > > Hi Michael,
> > >
> > > Thank you for the patch.
> > >
> > > (CC'ing Hans Verkuil and the linux-media mailing list)
> > >
> > > On Friday 08 August 2014 17:38:58 Michael Grzeschik wrote:
> > >> This patch adds ENUM_FMT as possible ioctl to the uvc v4l2 device.
> > >> That makes userspace applications with a generic IOCTL calling
> > >> convention make also use of it.
> > >>
> > >> Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
> > >> ---
> > >>
> > >> v1 -> v2:
> > >> - changed first switch case to simple if
> > >> - added separate function
> > >> - added description field
> > >> - bail out on array boundaries
> > >>
> > >> drivers/usb/gadget/uvc_v4l2.c | 30 ++++++++++++++++++++++++++++--
> > >> 1 file changed, 28 insertions(+), 2 deletions(-)
> > >>
> > >> diff --git a/drivers/usb/gadget/uvc_v4l2.c
> > >> b/drivers/usb/gadget/uvc_v4l2.c
> > >> index ad48e81..58633bf 100644
> > >> --- a/drivers/usb/gadget/uvc_v4l2.c
> > >> +++ b/drivers/usb/gadget/uvc_v4l2.c
> > >> @@ -55,14 +55,30 @@ struct uvc_format
> > >> {
> > >> u8 bpp;
> > >> u32 fcc;
> > >> + char *description;
> > >> };
> > >>
> > >> static struct uvc_format uvc_formats[] = {
> > >> - { 16, V4L2_PIX_FMT_YUYV },
> > >> - { 0, V4L2_PIX_FMT_MJPEG },
> > >> + { 16, V4L2_PIX_FMT_YUYV, "YUV 4:2:2" },
> > >> + { 0, V4L2_PIX_FMT_MJPEG, "MJPEG" },
> > >
> > > Format descriptions are currently duplicated in every driver, causing
> > > higher memory usage and different descriptions for the same format
> > > depending on the driver. Hans, should we try to fix this ?
> >
> > Yes, we should. It's been on my todo list for ages, but at a very low
> > priority. I'm not planning to work on this in the near future, but if
> > someone else wants to work on this, then just go ahead.
>
> Michael, would you like to give this a try, or should I do it ?
It seems Philipp is already taking the chance! :)
Regards,
Michael
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