Trent Piepho wrote:
On Sun, 22 Feb 2009, Hans de Goede wrote:
Yes that is what we are talking about, the camera having a gravity switch
(usually nothing as advanced as a gyroscope). Also the bits we are talking
about are in a struct which communicates information one way, from the camera
to userspace, so there is no way to clear the bits to make the camera do something.
First, I'd like to say I agree with most that the installed orientation of
the camera sensor really is a different concept than the current value of a
gravity sensor. It's not necessary, and maybe not even desirable, to
handle them in the same way.
I do not see the advantage of using reserved bits instead of controls.
The are a limited number of reserved bits. In some structures there are
only a few left. They will run out. Then what? Packing non-standard
sensor attributes and camera sensor meta-data into a few reserved bits is
not a sustainable policy.
Controls on the other card are not limited and won't run out.
Yes but these things are *not* controls, end of discussion. The control API is
for controls, not to stuff all kind of cruft in.
Regards,
Hans
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