Create
A static factory method that allocates and initializes a video level control.
Declaration
static OSSharedPtr<IOUserVideoLevelControl> Create(IOUserVideoDriver *in_driver, bool in_is_settable, float in_decibel_value, IOUserVideoLevelControlRange in_decibel_range, IOUserVideoObjectPropertyElement in_control_element, IOUserVideoObjectPropertyScope in_control_scope, IOUserVideoClassID in_control_class_id);Parameters
- in_driver:
The IOUserVideoDriver that owns this object.
- in_is_settable:
A Boolean value indicating if the control value can be set
- in_decibel_value:
A float for the controls current decibel level value
- in_decibel_range:
A IOUserVideoLevelControlRange for the controls decibe minimum and maximum range
- in_control_element:
The IOUserVideoObjectPropertyElement for the control
- in_control_scope:
The IOUserVideoObjectPropertyScope for the control
- in_control_class_id:
The IOUserVideoClassID of the control
Return Value
OSSharedPtr to an IOUserVideoLevelControl if it was successfully allocated and initialized
Discussion
If IOUserVideoLevelControl is subclassed to override behavior, don’t use this method to allocate or initialize the custom subclass.