On 2001.06.26 23:56:28 +0200 Trent Piepho wrote: > On Wed, 27 Jun 2001, Alan McIvor wrote: > > after using VIDIOCSPICT to alter the contrast was so poor. > > > > It is better to use is 180/254 (the ratio of the default register > values) > > than 201/283 which is an approximation to the range in percent. > > I did this long ago, changed the ratio to 90/127 (same as 180/254..), > from > 201/237. As far as I can tell, 201/237 is just flat wrong. I'm pretty > sure I > mentioned it a few times, but it seems to have fallen on deaf ears. > > BTW, how about adding an ioctl to READ the brightness, saturation, color, > etc. > values that are currently being used. Huh? How about VIDIOCGPICT? It has been part of the v4l spec as long as I can remember? Doesn't bttv implement this? Jeroen
