Another possible mis-abuse of a binary blob control would be as a mechanism for retrieving a lumanance histogram from an image processing peripheral. Once again, I could implement that through the debugfs as Jean-Michel suggested, or I could do something more standard. Any suggestions for a "more standard" mechanism for retrieving out-of-band data (such as a histogram) from a V4L2 camera source? I guess, now that I have mentioned out-of-band data, I could also start thinking about the "embedded data lines" that are provided as the first two lines from my Sony imager. Is there any standard way for directing those two lines to a separate buffer? I'd rather ask silly sounding questions, than implement silly code. :-) --wpd
