summaryrefslogtreecommitdiffstats
path: root/Documentation/media/uapi/dvb/audio-select-source.rst
blob: c0434a0bd324431c31d6c7c5ed72805d743ce9f4 (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
.. -*- coding: utf-8; mode: rst -*-

.. _AUDIO_SELECT_SOURCE:

===================
AUDIO_SELECT_SOURCE
===================

Name
----

AUDIO_SELECT_SOURCE

.. attention:: This ioctl is deprecated

Synopsis
--------

.. c:function:: int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)
    :name: AUDIO_SELECT_SOURCE


Arguments
---------

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


    -

       -  int fd

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

    -

       -  audio_stream_source_t source

       -  Indicates the source that shall be used for the Audio stream.


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

This ioctl call informs the audio device which source shall be used for
the input data. The possible sources are demux or memory. If
AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
through the write command.


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.