outputs applications can enumerate them with the
:ref:`VIDIOC_ENUMINPUT` and
:ref:`VIDIOC_ENUMOUTPUT` ioctl, respectively. The
outputs applications can enumerate them with the
:ref:`VIDIOC_ENUMINPUT` and
:ref:`VIDIOC_ENUMOUTPUT` ioctl, respectively. The
:ref:`VIDIOC_ENUMINPUT` ioctl also contains signal
:status information applicable when the current video input is queried.
:ref:`VIDIOC_ENUMINPUT` ioctl also contains signal
:status information applicable when the current video input is queried.