1.. -*- coding: utf-8; mode: rst -*-
2
3.. _AUDIO_SET_ID:
4
5============
6AUDIO_SET_ID
7============
8
9Name
10----
11
12AUDIO_SET_ID
13
14.. attention:: This ioctl is deprecated
15
16Synopsis
17--------
18
19.. c:function:: int  ioctl(int fd, AUDIO_SET_ID, int id)
20    :name: AUDIO_SET_ID
21
22Arguments
23---------
24
25.. flat-table::
26    :header-rows:  0
27    :stub-columns: 0
28
29
30    -
31
32       -  int fd
33
34       -  File descriptor returned by a previous call to open().
35
36    -
37
38       -  int id
39
40       -  audio sub-stream id
41
42
43Description
44-----------
45
46This ioctl selects which sub-stream is to be decoded if a program or
47system stream is sent to the video device. If no audio stream type is
48set the id has to be in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for
49AC3 and in [0xA0,0xA7] for LPCM. More specifications may follow for
50other stream types. If the stream type is set the id just specifies the
51substream id of the audio stream and only the first 5 bits are
52recognized.
53
54
55Return Value
56------------
57
58On success 0 is returned, on error -1 and the ``errno`` variable is set
59appropriately. The generic error codes are described at the
60:ref:`Generic Error Codes <gen-errors>` chapter.
61