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``.
322     depending on particular custom controls should check the driver name
325 Applications can enumerate the available controls with the
331 device has one or more controls, ``VIDIOC_QUERYMENU`` when it has one or
332 more menu type controls.
337 Example: Enumerating all controls
379 Example: Enumerating all controls including compound controls
404 Example: Enumerating all user controls (old style)
452 Example: Changing controls
511    controls. This makes it hard to programmatically set such controls