On Tue, 24 Jul 2001, Greg Hosler wrote: > I'm partially guessing, based uponteh following: > > /usr/src/linux/Documentation/usb/Philips.txt > > mentions about palette options when insmodding the module. however, when > trying w/ rgb24, insmod gives an error. grepping palette drivers/usb/pwc* > displays what looks like initial load palette options (yuv420/yuv420p only), > and others (in pwc-ctl (?) which I suspect is the ioctl support for this > driver). The driver used to support a range of palette conversions. These were removed when the driver was merged into 2.4.x as the first part of a drive to rid the kernel of kernel-side conversions. There was a long and heated discussion about how many user-space applications it would break. I imagine the documentation hasn't caught up to the fact the driver was slimmed down. > > I did not believe the compressor added palettes. You need > > to add 420(p) support to webcam. See the ccvt library that Nemosoft > > have on the philips camera pages at http://www.smcc.demon.nl/webcam/. > > I'll take a look. but, are you saying that I need to modify the source code > (which I can do) ? I was hoping that this might be supported "outta da box"... 420 isn't a commonly suported format, and I haven't looked at webcam source myself, but yes. You probably have to tweak the source to ask for yuv420(p) and convert. Regards, Mark -- +-------------------------------------------------------------------------+ Mark Cooke The views expressed above are mine and are not Systems Programmer necessarily representative of university policy University Of Birmingham URL: http://www.sr.bham.ac.uk/~mpc/ +-------------------------------------------------------------------------+
