media/v4l/video.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Video Inputs and Outputs
9 Video inputs and outputs are physical connectors of a device. These can
11 Video, S-Video and RGB connectors. Camera sensors are also considered to
13 VBI output devices have outputs, at least one each. Radio devices have
14 no video inputs or outputs.
17 outputs applications can enumerate them with the
29 implement all the input ioctls when the device has one or more inputs,
30 all the output ioctls when the device has one or more outputs.
35 .. code-block:: c
40     if (-1 == ioctl(fd, VIDIOC_G_INPUT, &index)) {
48     if (-1 == ioctl(fd, VIDIOC_ENUMINPUT, &input)) {
59 .. code-block:: c
65     if (-1 == ioctl(fd, VIDIOC_S_INPUT, &index)) {