05c59b761a
(available under /proc on Linux) as a sysctl tree debug.{drivername}
With this feature you can, as an example, set
sysctl debug.gspca.compress=1 and sysctl debug.gspca.autoexpo=0
to speed up capture on some cameras.
This version also includes some pwcview changes to display up
to 4 copies of the grabbed image, with various mirroring options.