On Wed, 16 May 2012 23:42:43 +0200 Antonio Ospite <osp...@studenti.unina.it> wrote:
> The second patch removes the dependency between auto gain and auto white > balance, I'd like to hear Jean-Francois on this, the webcam (the ov772x > sensor) is able to set the two parameters independently and the user can > see the difference of either, is there a reason why we were preventing > the user from doing so before? Hi Antonio, I added this dependency by the git commit 2d19a2c1186d86e3 on Thu, 12 Nov 2009 (the original patch was done under mercurial). Looking in my archives, I retrieved this mail I have sent to you, Max Thrun, kaswy, baptiste_lemarie, Martin Drake and Jim Paris: On Thu, 12 Nov 2009 13:24:43 +0100 I wrote: > On Thu, 12 Nov 2009 11:13:32 +0100 > Antonio Ospite <osp...@studenti.unina.it> wrote: > > > On Wed, 11 Nov 2009 19:13:51 -0500 > > Max Thrun <bear2...@gmail.com> wrote: > > > > > > *I get a weird effect, something > > > > like a mosaic effect caused by a picture shift, at such high > > > > frame rates (also at 640x480@60), I need to verify if it is my > > > > usb host which is weak.* > [snip] > > Maybe the End Of Frame detection logic is still imperfect, but I have > > to admit I haven't looked at it lately. > > You are heading to face/object tracking, aren't you? Very interesting. > > When adding the ov965x, I removed the check of the image size. May you > try to set it back? (sorry, I have no patch - the check must be done > at 2 places, just before adding the LAST_PACKET - the 2nd is enclosed in > #if 0) > > > > * * Brightness control in guvcview doesn't seem to work.* > > > > > > Confirmed. Easy fix though: > [snip] > > Thanks, please send patches, they are so easy to create from Mercurial > > that I don't think you have many excuses for not doing so :) > > Thanks also from me. I already did and uploaded the fix. > > > > > * * AWB doesn't have any effect?* > > > > > > > I notice its effect if i start uvcview, enable auto gain, then > > > enable awb. > > > > > > > If there is a strict dependency between these two settings, > > shouldn't the driver enforce it? > [snip] > > It should! This asks for a change in the main gspca. I will try to do > it quickly. Otherwise, you are right, the ov7670 and ov7729 datasheets do not talk about a possible AGC and AWB dependency... -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
