Lines Matching full:controls

6 User Controls
9 Devices typically have a number of user-settable controls such as
12 different controls available, and furthermore, the range of possible
15 user interface for these controls that will work correctly with any
18 All controls are accessed using an ID value. V4L2 defines several IDs
20 controls using ``V4L2_CID_PRIVATE_BASE``  [#f1]_ and higher values. The
25 Generally applications should present controls to the user without
30 to change a few controls programmatically, for example to mute a device
33 Drivers may enumerate different controls after switching the current
48 V4L2 specifies an event mechanism to notify applications when controls
54 All controls use machine endianness.
144     controls ``V4L2_CID_DIGITAL_GAIN`` and ``V4L2_CID_ANALOGUE_GAIN``.
318     depending on particular custom controls should check the driver name
321 Applications can enumerate the available controls with the
327 device has one or more controls, ``VIDIOC_QUERYMENU`` when it has one or
328 more menu type controls.
333 Example: Enumerating all controls
375 Example: Enumerating all controls including compound controls
400 Example: Enumerating all user controls (old style)
448 Example: Changing controls
507    controls. This makes it hard to programmatically set such controls