tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. Permission is granted to copy, distribute and/or modify this
2.. document under the terms of the GNU Free Documentation License,
3.. Version 1.1 or any later version published by the Free Software
4.. Foundation, with no Invariant Sections, no Front-Cover Texts
5.. and no Back-Cover Texts. A copy of the license is included at
6.. Documentation/userspace-api/media/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _AUDIO_SET_ID:
11
12============
13AUDIO_SET_ID
14============
15
16Name
17----
18
19AUDIO_SET_ID
20
21.. attention:: This ioctl is deprecated
22
23Synopsis
24--------
25
26.. c:function:: int ioctl(int fd, AUDIO_SET_ID, int id)
27 :name: AUDIO_SET_ID
28
29Arguments
30---------
31
32.. flat-table::
33 :header-rows: 0
34 :stub-columns: 0
35
36
37 -
38
39 - int fd
40
41 - File descriptor returned by a previous call to open().
42
43 -
44
45 - int id
46
47 - audio sub-stream id
48
49
50Description
51-----------
52
53This ioctl selects which sub-stream is to be decoded if a program or
54system stream is sent to the video device. If no audio stream type is
55set the id has to be in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for
56AC3 and in [0xA0,0xA7] for LPCM. More specifications may follow for
57other stream types. If the stream type is set the id just specifies the
58substream id of the audio stream and only the first 5 bits are
59recognized.
60
61
62Return Value
63------------
64
65On success 0 is returned, on error -1 and the ``errno`` variable is set
66appropriately. The generic error codes are described at the
67:ref:`Generic Error Codes <gen-errors>` chapter.