yes the way saturation is now it does not work correctly. does anyone have an issue with reverting the patch that added saturation support in there since its right now broken?
On Sat, Mar 14, 2009 at 2:43 PM, Stefan Krastanov <[email protected]> wrote: > The new version of libv4l is working (dmesg reports yuv420) but there is > another problem, this time with saturation. > When I change sat to any value <=254 the image goes grey. When I set it to > 255 it's to saturated. When I reset Brightens or Contrast it gets normal. > When I reset Saturation it gets grey again. Is this to be expected with my > chip 0C45:6270 MT9V011? > Screenshoots are attached. > > Regards > Stefan > > 2009/3/14 Stefan Krastanov <[email protected]> >> >> For me jpeg is working but the quality of the picture is very low. I'm >> installing new libv4l now. >> >> 2009/3/14 Boris Borisov <[email protected]> >>> >>> my version of libV4l is: >>> * media-libs/libv4l >>> Latest version available: 0.5.3 >>> Latest version installed: 0.5.3 >>> with jpeg format brightest and contrast also not working >>> I test with ekiga >>> >>> >>> Brian Johnson wrote: >>> > The brightness works on the older version since that comes before we >>> > got proper format switching working and it was using one of the hard >>> > coded bridge formats. anyways brightness/contrast do not work ewith >>> > raw bayer format because the bridge uses its color matrix to control >>> > those, the color matrix is what the bridge uses to convert the raw rgb >>> > values to yuv, and since the bridge passing through the raw bayer >>> > pattern as received from the sensor without converting to a yuv format >>> > brightness and contrast will not work with bayer format. >>> > >>> > There are two wys to get this working right first if you insmod the >>> > module with the jpeg=1 parameter >>> > (insmod ./sn9c20x.ko jpeg=1) libv4l should choose to use the jpeg >>> > format instead of bayer or make sure you are using version 0.5.8 or >>> > greater of libv4l whcih supports the bridges custom yuv format and >>> > will choose that over bayer >>> > >>> > 2009/3/14 Boris Borisov <[email protected]>: >>> > >>> >> Because I write a part of old driver, special decoder for 6270 >>> >> cameras. >>> >> On new releases this is decoder is not included. In this case I use my >>> >> old copy of repository May 2008. >>> >> Because my implementations is using this functions (image processing) >>> >> access via sys-fs tuning picture (normalization) is very important . >>> >> New release is used for decoder v4l2convert but that is no very clear >>> >> solution for my situation because this is library some time is >>> >> generating core dump and stop production line (very often if is using >>> >> with V4L1). Also converter is get more resources CPU and memory. On my >>> >> visio systems based on Beagleboard the resources is very important for >>> >> robotic speed. >>> >> I post this issue because I can't solve for 20 minutes and not follow >>> >> from long time new commitments. >>> >> About git try with qgit or qgit4 graphics user interface program and >>> >> save the time for understanding git. Yes is possible to get old >>> >> revision. >>> >> >>> >> мЕЛ ДЕО >>> >> Bobby >>> >> >>> >> Stefan Krastanov wrote: >>> >> >>> >>> Hello, >>> >>> >>> >>> On љ0C45:6270 with MT9V011 it's also not working(checked with >>> >>> v4l2ucp). I have reported it, but failed to give details - I was more >>> >>> interested in another problem. >>> >>> >>> >>> I have some time so I can check in exactly which version the support >>> >>> regresses but I will need at least some initial time interval in >>> >>> which >>> >>> to begin the search. And also, I'll be happy if you can tell me how >>> >>> to >>> >>> row back to old versions using git (based on date if it's possible) - >>> >>> if not I'll dig in the man page ;) >>> >>> >>> >>> Best Regards >>> >>> Stefan Krastanov >>> >>> >>> >>> 2009/3/14 Boris Borisov <[email protected] <mailto:[email protected]>> >>> >>> >>> >>> >>> >>> љ љ Hello, >>> >>> љ љ Can you check the brightness and contrast functions, because for >>> >>> љ љ me this >>> >>> љ љ functions is broken. >>> >>> љ љ Really i call sn9c20x_set_contrast with different values of >>> >>> brightness >>> >>> љ љ and contrast via sys-fs and V4l functions (ekiga) but brightness >>> >>> and >>> >>> љ љ contrast is not changed. >>> >>> љ љ On very old version (who I use) this functions is working. >>> >>> >>> >>> љ љ Best regards >>> >>> љ љ Bobby >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >>> > >>> > > >>> > >>> > >>> >>> >>> >> > > > > > --~--~---------~--~----~------------~-------~--~----~ Lets make microdia webcams plug'n play, (currently plug'n pray) To post to this group, send email to [email protected] Visit us online https://groups.google.com/group/microdia -~----------~----~----~----~------~----~------~--~---
