v4l2_ctrl_new_std — Allocate and initialize a new standard V4L2 non-menu control.
The control handler.
The control ops.
The control ID.
The control's minimum value.
The control's maximum value.
The control's step value
The control's default value.
If the v4l2_ctrl struct could not be allocated, or the control
ID is not known, then NULL is returned and
hdl->error is set to the
appropriate error code (if it wasn't set already).
id refers to a menu control, then this function will return NULL.
v4l2_ctrl_new_std_menu when adding menu controls.