Synopsis
========
-.. cpp:function:: int ioctl( int fd, int request, int *argp )
+.. c:function:: int ioctl( int fd, VIDIOC_G_INPUT, int *argp )
+ :name: VIDIOC_G_INPUT
+
+.. c:function:: int ioctl( int fd, VIDIOC_S_INPUT, int *argp )
+ :name: VIDIOC_S_INPUT
Arguments
``fd``
File descriptor returned by :ref:`open() <func-open>`.
-``request``
- VIDIOC_G_INPUT, VIDIOC_S_INPUT
-
``argp``
To query the current video input applications call the
:ref:`VIDIOC_G_INPUT <VIDIOC_G_INPUT>` ioctl with a pointer to an integer where the driver
stores the number of the input, as in the struct
-:ref:`v4l2_input <v4l2-input>` ``index`` field. This ioctl will fail
+:c:type:`v4l2_input` ``index`` field. This ioctl will fail
only when there are no video inputs, returning ``EINVAL``.
To select a video input applications store the number of the desired