Hi Jon,

On Saturday 23 May 2009 19:42:09 Jon Fairbairn wrote:
> Laurent Pinchart <[email protected]> writes:
> > Hi Moritz,
> >
> > On Monday 22 September 2008, Moritz Barsnick wrote:
> >> On Sat, Apr 14, 2007 at 03:03:13 +0200, Laurent Pinchart wrote:
> >> > > I had a sneaky suspicion my camera was stuck in top quality. Laurent
> >> > > Pinchart's comments from March 25th confirmed and were a nice
> >> > > blueprint for this patch.
> >> >
> >> > First of all, thanks for the patch.
> >>
> >> [...]
> >>
> >> > Great :-) I'll have a look at the code after this weekend, and commit
> >> > the changes to SVN.
>
> [...]
>
> >> Has this patch[*] been obsoleted, or forgotten, or perhaps even
> >> rejected?
> >
> > Mostly forgotten actually. I'm working on reviving it, but I first have
> > to implement proper workarounds for webcams that don't implement the
> > GET_MIN/GET_MAX requests on the video probe control properly (and there
> > are many of them). I'll soon post a patch for review/testing on the list,
> > and I'll then work on the JPEG quality patch.
> >
> >> The recent release of motion mentions this in its CHANGELOG (though I
> >> think the patch is unrelated to the named issue):
> >> http://www.lavrsen.dk/twiki/bin/view/Motion/UvcvideoMjpegPatch
> >
> > That's related. Thanks for the information. I'll contact
> > the authors of motion after committing JPEG quality
> > support to update their wiki.
>
> How's this going? I recently got a Creative Live! Cam Optia
> (ID 041e:4057) and am using it with motion. Although it's
> connected to a USB2 port, I'm getting a problem (maybe
> caused by a bug in the usb root driver, but that's not the
> topic here¹) that causes the device to disappear if I try to
> use the full resolution of the camera. As a work-round for
> that, I thought I could use MJPEG, but then I hit the
> problem this thread is about.
>
> I'm using the latest(?) fedora 9 kernel
> (2.6.27.23-78.2.50.fc9.x86_64). F9 is a bit out of date now,
> but looking at the uvcvideo repo I couldn't find signs of
> the patch having been applied.
>
> It would be useful to me if a patch for this did get
> included. In the short term I suppose I could build a
> patched version of the module (modulo some change to the
> patch to make it apply to the present code), but it would be
> much nicer if it made it into the tree.
>
> (Mostly posting to indicate that there is other interest in
> this issue).
>
> [1] I can't address the USB root issue as I'm too far from
> the camera to unplug it.

I guess I have no choice but to work on this then :-) I'll try to get a patch 
ready for the end of the week. If I don't feel free to (nicely) remind me.

Best regards,

Laurent Pinchart

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