On (22/12/01 11:32), Yunke Cao wrote: > +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst > @@ -447,7 +447,11 @@ See also the examples in :ref:`control`. > - n/a > - A struct :c:type:`v4l2_rect`, containing a rectangle described by > the position of its top-left corner, the width and the height. Units > - depend on the use case. > + depend on the use case. Use ``V4L2_CTRL_WHICH_MIN_VAL`` and > + ``V4L2_CTRL_WHICH_MAX_VAL`` to query the range of rectangle sizes. The > + top-left corner of the minimum and maximum rectangles should be the > + same. For example, a control can have a minimum rectangle of 1x1@0x0 and > + a maximum of 640x480@0x0. I assume that examples use width-height@top-left convention. Is this common or should it be 0x0@1x1 and 0x0@640x480?
