tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.audio
3
4.. _AUDIO_SELECT_SOURCE:
5
6===================
7AUDIO_SELECT_SOURCE
8===================
9
10Name
11----
12
13AUDIO_SELECT_SOURCE
14
15.. attention:: This ioctl is deprecated
16
17Synopsis
18--------
19
20.. c:macro:: AUDIO_SELECT_SOURCE
21
22``int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)``
23
24Arguments
25---------
26
27.. flat-table::
28 :header-rows: 0
29 :stub-columns: 0
30
31 -
32
33 - int fd
34
35 - File descriptor returned by a previous call to open().
36
37 -
38
39 - audio_stream_source_t source
40
41 - Indicates the source that shall be used for the Audio stream.
42
43Description
44-----------
45
46This ioctl call informs the audio device which source shall be used for
47the input data. The possible sources are demux or memory. If
48AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
49through the write command.
50
51Return Value
52------------
53
54On success 0 is returned, on error -1 and the ``errno`` variable is set
55appropriately. The generic error codes are described at the
56:ref:`Generic Error Codes <gen-errors>` chapter.