Hi Laurent, On 12/08/2011 11:30 AM, Laurent Pinchart wrote: >> Another use case for control range update would be with an auto-exposure >> metering spot location controls. An available range for x and y coordinates >> would depend on selected pixel resolution. If we would have created two >> controls for (x, y) their range would depend on pixel (width, height) >> respectively. So when a new format is set such controls would need to get >> their range updated. > > To be honest I'm not sure whether points, and especially rectangles, should > be > handled as controls. We have no structure-like control type at the moment, > adding points might be possible, but rectangles would require either 2 point- > liek controls or 4 controls (left, top, width, height). I don't really like > that. A new API (possibly based on the selection API ?) might be better.
Indeed, I don't like having 4 controls for specifying a rectangle as well, it doesn't just sound right. I was concerned about specifying a point using the selection API. But it could be just (left=x, top=y, width=1, height=1). -- Regards, Sylwester -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
