1.. -*- coding: utf-8; mode: rst -*-
2
3.. _AUDIO_CHANNEL_SELECT:
4
5====================
6AUDIO_CHANNEL_SELECT
7====================
8
9Name
10----
11
12AUDIO_CHANNEL_SELECT
13
14.. attention:: This ioctl is deprecated
15
16Synopsis
17--------
18
19.. c:function:: int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct *audio_channel_select)
20    :name: AUDIO_CHANNEL_SELECT
21
22
23Arguments
24---------
25
26.. flat-table::
27    :header-rows:  0
28    :stub-columns: 0
29
30
31    -
32
33       -  int fd
34
35       -  File descriptor returned by a previous call to open().
36
37    -
38
39       -  audio_channel_select_t ch
40
41       -  Select the output format of the audio (mono left/right, stereo).
42
43
44Description
45-----------
46
47This ioctl is for Digital TV devices only. To control a V4L2 decoder use the
48V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
49
50This ioctl call asks the Audio Device to select the requested channel if
51possible.
52
53
54Return Value
55------------
56
57On success 0 is returned, on error -1 and the ``errno`` variable is set
58appropriately. The generic error codes are described at the
59:ref:`Generic Error Codes <gen-errors>` chapter.
60