include/media/v4l2-ctrls.h

3  *  V4L2 controls support header.
112  *		for volatile (and usually read-only) controls such as a control
120  *		one else can access controls owned by that handler.
172  * @ncontrols:	Number of controls in cluster array.
211  * @step:	The control's step value for non-menu controls.
216  * @menu_skip_mask: The control's skip mask for menu controls. This makes it
243  *		through a pointer (for compound controls only).
317  *		the control has been applied. This prevents applying controls
318  *		from a cluster with multiple controls twice (when the first
330  * keep a sorted-by-control-ID list of all controls, while the next pointer
348  *	controls: both the controls owned by the handler and those inherited
352  * @lock:	Lock to control access to this handler and its controls.
354  * @ctrls:	The list of controls owned by this handler.
374  *		in which these controls are applied. Once the request is
402  * @type_ops:	The control type ops. Only needed for compound controls.
408  * @step:	The control's step value for non-menu controls.
410  * @p_def:	The control's default value for compound controls.
414  * @menu_skip_mask: The control's skip mask for menu controls. This makes it
463  * This works for all standard V4L2 controls.
464  * For non-standard controls it will only fill in the given arguments
484  * @nr_of_controls_hint: A hint of how many controls this handler is
486  *		any inherited controls. It doesn't have to be precise, but if
513  * @nr_of_controls_hint: A hint of how many controls this handler is
515  *		any inherited controls. It doesn't have to be precise, but if
544  * v4l2_ctrl_handler_free() - Free all controls owned by the handler and free
573  * __v4l2_ctrl_handler_setup() - Call the s_ctrl op for all controls belonging
579  * Button controls will be skipped, as are read-only controls.
586  * v4l2_ctrl_handler_setup() - Call the s_ctrl op for all controls belonging
590  * Button controls will be skipped, as are read-only controls.
597  * v4l2_ctrl_handler_log_status() - Log all controls owned by the handler.
644  * Use v4l2_ctrl_new_std_menu() when adding menu controls.
659  * @mask:	The control's skip mask for menu controls. This makes it
684  * @mask:	The control's skip mask for menu controls. This makes it
712  * Sames as v4l2_ctrl_new_std(), but with support to compound controls, thanks
754  * v4l2_ctrl_add_handler() - Add all controls from handler @add to
758  * @add:	The control handler whose controls you want to add to
760  * @filter:	This function will filter which controls should be added.
761  * @from_other_dev: If true, then the controls in @add were defined in another
765  * If @filter is NULL, then all controls are added. Otherwise only those
766  * controls for which @filter returns true will be added.
776  * v4l2_ctrl_radio_filter() - Standard filter for radio controls.
780  * This will return true for any controls that are valid for radio device
781  * nodes. Those are all of the V4L2_CID_AUDIO_* user controls and all FM
782  * transmitter class controls.
789  * v4l2_ctrl_cluster() - Mark all controls in the cluster as belonging
792  * @ncontrols:	The number of controls in this cluster.
793  * @controls:	The cluster control array of size @ncontrols.
795 void v4l2_ctrl_cluster(unsigned int ncontrols, struct v4l2_ctrl **controls);
799  * v4l2_ctrl_auto_cluster() - Mark all controls in the cluster as belonging
802  * @ncontrols:	The number of controls in this cluster.
803  * @controls:	The cluster control array of size @ncontrols. The first control
807  * @set_volatile: If true, then all controls except the first auto control will
811  * the other controls are only active whenever the automatic feature is turned
815  * The behavior of such controls is as follows:
817  * When the autofoo control is set to automatic, then any manual controls
821  * When the autofoo control is set to manual, then any manual controls will
830 			    struct v4l2_ctrl **controls,
910  * INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the
932  * INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the
1011  * This function is for integer type controls only.
1025  * This function is for integer type controls only.
1039  * This function is for integer type controls only.
1062  * This function is for 64-bit integer type controls only.
1076  * This function is for 64-bit integer type controls only.
1091  * This function is for 64-bit integer type controls only.
1114  * This function is for string type controls only.
1129  * This function is for string type controls only.
1153  * This function is for compound type controls only.
1170  * This function is for compound type controls only.
1185 /* Helper defines for area type controls */
1223  * Can be used as a vidioc_log_status function that just dumps all controls
1274  * The function first obtains the values of any volatile controls in the control
1449  * v4l2_ctrl_subdev_log_status - Log all controls owned by subdev's control
1457  * v4l2_ctrl_new_fwnode_properties() - Register controls for the device
1460  * @hdl: pointer to &struct v4l2_ctrl_handler to register controls on
1461  * @ctrl_ops: pointer to &struct v4l2_ctrl_ops to register controls with
1464  * This function registers controls associated to device properties, using the
1468  * Currently the following v4l2 controls are parsed and registered:
1472  * Controls already registered by the caller with the @hdl control handler are
1473  * not overwritten. Callers should register the controls they want to handle