media/v4l/audio.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
9 Audio inputs and outputs are physical connectors of a device. Video
13 tuners with video inputs or outputs only, and radio devices have none of
14 these. [#f1]_ A connector on a TV card to loop back the received audio
17 Audio and video inputs and outputs are associated. Selecting a video
18 source also selects an audio source. This is most evident when the video
20 more than one video input or output. Assumed two composite video inputs
22 The relation of video and audio connectors is defined in the
63 .. code-block:: c
69     if (-1 == ioctl(fd, VIDIOC_G_AUDIO, &audio)) {
80 .. code-block:: c
88     if (-1 == ioctl(fd, VIDIOC_S_AUDIO, &audio)) {