v4l2_ctrl_modify_range — Update the range of a control.
int v4l2_ctrl_modify_range ( | struct v4l2_ctrl * ctrl, |
| s64 min, | |
| s64 max, | |
| u64 step, | |
s64 def); |
ctrlThe control to update.
minThe control's minimum value.
maxThe control's maximum value.
stepThe control's step value
defThe control's default value.
Update the range of a control on the fly. This works for control types
INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the
step value is interpreted as a menu_skip_mask.
An error is returned if one of the range arguments is invalid for this control type.
This function assumes that the control handler is not locked and will take the lock itself.