By default our driv er is compiled with debugfs support. however you probably have to mount the debugfs filesystem try the following # sudo mount -t debugfs none /sys/kernel/debug/
On Tue, Mar 17, 2009 at 3:31 PM, Stefan Krastanov <[email protected]> wrote: > I checked the ruby script but my kernel/debug directory is empty. I'm > searching in the docs for how to compile the module with debug options(or > whatever I must do) but if you can save me the time I'll be grateful. > > There are no problems with saturation (as it's non-existent ;) in the > version from Mon Mar 16 00:31:19 2009. But I noticed that contrast bar in > v4l2ucp is changing in fact the brightness (and just a bit of the contrast). > But it seems that at the moment you are working on the saturation, so I'll > remind of that later. > > All that on 0C45:6270 MT9V011 > > Regards > Stefan > > 2009/3/17 Brian Johnson <[email protected]> >> >> Actually I think it would be better to just git revert the entire >> saturation commit and redo it with a working commit latter instead of >> just commenting out that line. >> >> As far as i know the only two broken sensors are the mt9m001 and >> ov7670 both i believe give valid pictures but need some tweaking for >> color adjustment. >> >> >> On Tue, Mar 17, 2009 at 12:23 AM, JoJo jojo <[email protected]> wrote: >> > >> > Hi Brian >> > >> > Agreed, lets block all other commits before this weekend, >> > Guys please post/queue your patches for review this weekend. >> > >> > Blocking saturation should be simple enuff, maybe commenting >> > >> > http://repo.or.cz/w/microdia.git?a=blob;f=sn9c20x-usb.c;h=4eab2d57558ed87cc0eb788066e4acf97f17d123;hb=0963ed513d4f2abff3469292825f971445402392#l729 >> > >> > Also we need to know which webcams are broken, is it only 6270's ? >> > ('coz i seem to remember some sensor color tweaking here >> > >> > http://repo.or.cz/w/microdia.git?a=commitdiff;h=e22293994c6019579e24d789be203729699306dc >> > ) >> > >> > And hey, its nice to see people are still tracking/testing master/HEAD >> > ;-) >> > We'll arrange for a more through weekend testing this coming friday. >> > >> > -JoJo >> > >> > On Tue, Mar 17, 2009 at 9:28 AM, Brian Johnson <[email protected]> >> > wrote: >> >> >> >> Saturation is supposed to change the intensity of a color so this >> >> patch is not right as well, Also while hue is supposed to change the >> >> actual color this is wrong for that as well since it should not wash >> >> the entire image in a particular color like this patch does. >> >> >> >> I've uploaded for reference an archive containing two data files for >> >> both saturation and hue plus a ruby ruby script that can feed values >> >> from one of the data sources through the debugfs to show a gradual >> >> progression of changing colors. The data values i use for hue and >> >> saturation come from the values used under windows. Run this file >> >> using the following command, where <datafile> is wither hues.yaml or >> >> sats.yaml >> >> # ruby ./color.rb <datafile> >> >> >> >> link: http://groups.google.com/group/microdia/web/color_ref.tar.gz >> >> >> >> My understanding of how the bridge handles hue and saturation is that >> >> you are basically modifying the coefficients for the bridges color >> >> matrix. The color matrix is the set of coefficients used to convert >> >> the RGB data provided by the sensor ot YUV color-space. Saturation >> >> should just be a matter of proper scaling of the matrix values, with >> >> hue involving rotating the values using sin and cos functions. >> >> >> >> The bridge appears to use two bytes per value with the second as far >> >> as i can tell either 0 or f which likly is used tell the sign of the >> >> first byte. >> >> >> >> Since both saturation and hue, as well as contrast and brightness, >> >> play with the values of our color matrix there should really be just >> >> one function that modifies things based on all those values so as to >> >> avoid overwriting what a previous function has done. >> >> >> >> Still since we have yet to get a working version of saturation i still >> >> very much suggest for the time being we revert the current saturation >> >> code and just apply a new patch when someone gets an acceptable patch >> >> for this. >> >> >> > >> > > >> > >> >> > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
