hi luis thank you very much for that hint. i would never have found that out on my own ;-)
i am not sure, if it is possible at all, but i wonder if there's a way to switch off all that automated stuff like whitebalance, shutter speed and automatic gain and set it to fixed values. whitebalance was easy from the beginning, but i still found no options for the other two parameters. i am using this cam for an artistic project, where the cam has a fixed position and frames from different times are compared. this comparison only gives meaningful results, when no automation is involved in the picture. by googling around, i found that this cam (spc900nc) is often used by astronomers and i assumed that for them using the camera in a scientific context, similar criteria are important (but i don't know, if they also use gnu/linux, of course) i just want to add, that i have acces to a windows box, where the original proprietary driver of this cam is installed. just in case that would be helpful for the further developing of the pwc-driver, i would be glad to help. i am not a c-coder, though, my help would be limited to provide some information about how the cam works on windows. if i am talking bullshit here (cause i actually don't know, how such driver for hardware with no open specs is developed), forget the last sentence. best roman On Tue, 2006-11-21 at 21:23 +0100, Luis Delgado de Mendoza Garcia wrote: > in fact is possible to apply some hidden options in the pwc driver. > > Because some errors in xawtv, this driver has some hidden features. > > If you open pwc-v4l.c in the source code of the driver, you will see a > line like this: > > #if XAWTV_HAS_BEEN_FIXED > > so, if you put afther de #include "pwc-ioctl.h" a line like this: > > #define XAWTV_HAS_BEEN_FIXED 1 > > you will get the full bunch of options in the pwc driver. > > Hope it helps. bye > > > On 11/21/06, Roman Haefeli <[EMAIL PROTECTED]> wrote: > hi steve > > i am quite a noob on this topic, though, but i also looked for > a > Quickcam 4000 pro, because i tested it once, but same story > here: they > seem to be not available anymore > > i spent a whole afternoon on searching a cam, that is: > a) supported by a driver on linux > b) is available in my country (switzerland) at the moment > > the only one i could find was a philips spc 900nc, for which > recently > support was added in the pwc-driver. > > the cam works, but the pwc driver doesn't support many of the > options > that are available on windows > > what is possible under linux with a spc900nc: > > 640x480 @ 15fps > 320x240 @ 30fps > 160x120 @ 30fps > > philips advertizes it as a cam with a max. framerate of 90fps, > but even > under windows i couldn't set the cam to more than 30, altough > the option > is listed. > > under windows you can switch off automatic whitebalanca and > automatic > shutter, which is not possible with the pwc driver. > > btw: is there any cam supported by the pwc driver, where you > can switch > off auto-whitebal and auto-shutter? > > roman > > > > On Tue, 2006-11-21 at 10:25 -0500, Steve Jensen wrote: > > So after getting PWC (thanks!) working, etc. and a nice > setup for > > streaming our zoo and basketball games, the camera I was > using for > > testing/development is no longer available :( (Logitech > Quickcam 4000 pro). > > > > So... we're looking for another camera that is currently > available. > > > > Anyone have working experience with the Logitech Orbit? It > is supported > > by pwc, so I'm not too worried there, but I'd like to hear a > success > > story or two, maybe see a few frames that it captures (from > a Linux > > box), etc. > > > > Thanks! > > > > Steve > > > > > > > > ___________________________________________________________ > Telefonate ohne weitere Kosten vom PC zum PC: > http://messenger.yahoo.de > _______________________________________________ > pwc mailing list > [email protected] > http://lists.saillard.org/mailman/listinfo/pwc > ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de _______________________________________________ pwc mailing list [email protected] http://lists.saillard.org/mailman/listinfo/pwc
