On Mon, Feb 22, 2010 at 8:40 AM, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote: > I think that the control you want is V4L2_CID_GAIN. I would have guessed the CID_GAIN control would have been responsible for *luma* gain. I could be wrong about that of course (but that is what I believe people typically think of when they think of "gain" in general). >> I believe there probably are cases where extended controls are required, >> but I believe just a general user control based on >> V4L2_CID_PRIVATE_BASE should probably be able to work even with the >> generic VIDIOC_S_CTRL >> >> I'm just asking because it would mean in order for v4l2-dbg to work >> with my solution i would have to add support for extended controls in >> general to the saa7115 driver, which shouldn't be necessary. > > The end objective is to have everybody implementing extended controls and > removing the old controls, letting the V4L2 ioctl2 to convert a call to a > simple control into an extended control callback. So, I think it would > be worthy to implement extended control on saa7115. Ok then. I'll add the 15-20 lines of code which add the extended controls mechanism to the 7115, which just operates as a passthrough for the older control interface. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
