aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/userspace-api/media/dvb/audio-set-av-sync.rst
blob: 85a8016bf025f99cf5eb73f0c47b3c345dbbe599 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: DTV.audio

.. _AUDIO_SET_AV_SYNC:

=================
AUDIO_SET_AV_SYNC
=================

Name
----

AUDIO_SET_AV_SYNC

.. attention:: This ioctl is deprecated

Synopsis
--------

.. c:macro:: AUDIO_SET_AV_SYNC

``int ioctl(int fd, AUDIO_SET_AV_SYNC, boolean state)``

Arguments
---------

.. flat-table::
    :header-rows:  0
    :stub-columns: 0

    -

       -  int fd

       -  File descriptor returned by a previous call to open().

    -

       -  boolean state

       -  Tells the Digital TV subsystem if A/V synchronization shall be ON or OFF.

          TRUE: AV-sync ON

          FALSE: AV-sync OFF

Description
-----------

This ioctl call asks the Audio Device to turn ON or OFF A/V
synchronization.

Return Value
------------

On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.