On Wed, 3 Mar 2010 02:27:38 +0000 "M.Ebrahimi" <m.ebrahimi@xxxxxxxx> wrote: > On 2 March 2010 16:06, Max Thrun <bear24rw@xxxxxxxxx> wrote: > > > > > > On Tue, Mar 2, 2010 at 10:39 AM, Antonio Ospite <ospite@xxxxxxxxxxxxxxxxx> > > wrote: [...] > >> Mosalam did you spot the register from a PS3 usb dump or by looking at > >> the sensor datasheet? > > None, I got that register from sniffing a Windows driver for another > camera that turned out to be using ov7620 or something similar, though > I thought it has the same sensor. I double checked, this register is > for frame rate adjustment (decreasing frame rate / increasing > exposure) . And this has been used in some other drivers (e.g. > gspca_sonixb) to remove light flicker as well. > I see. It would be interesting to see how Powerline Frequency filtering is done on PS3. I added Jim Paris on CC. > > > > I'd also like to know where you got the 2b register from, cause someone else > > also said 2b was filtering but the datasheet says it LSB of dummy pixel... > > > >- Max Thrun > > Definitely it is adjusting the frame rate (see the ov7620 DS for the > description how the register value is used, for instance). I have no > idea why the ov7720 datasheet says otherwise. > > Since this patch does not use the banding filter registers mentioned > in the datasheet maybe should be discarded. I am working on 75 FPS at > VGA, when I get that working well I can get back to this again. > > Thanks for the comments. > Mosalam > Ok, so Jean-Francois can you apply the patches except 10/11, please? We are keeping this one for another round. Thanks, Antonio -- Antonio Ospite http://ao2.it PGP public key ID: 0x4553B001 A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?
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