Synopsis
========
-.. cpp:function:: int ioctl( int fd, int request, int *argp )
+.. c:function:: int ioctl( int fd, VIDIOC_G_OUTPUT, int *argp )
+ :name: VIDIOC_G_OUTPUT
+
+.. c:function:: int ioctl( int fd, VIDIOC_S_OUTPUT, int *argp )
+ :name: VIDIOC_S_OUTPUT
Arguments
``fd``
File descriptor returned by :ref:`open() <func-open>`.
-``request``
- VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT
-
``argp``
To query the current video output applications call the
:ref:`VIDIOC_G_OUTPUT <VIDIOC_G_OUTPUT>` ioctl with a pointer to an integer where the driver
stores the number of the output, as in the struct
-:ref:`v4l2_output <v4l2-output>` ``index`` field. This ioctl will
+:c:type:`v4l2_output` ``index`` field. This ioctl will
fail only when there are no video outputs, returning the ``EINVAL`` error
code.