tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. -*- coding: utf-8; mode: rst -*-
2
3.. _VIDEO_SET_ID:
4
5============
6VIDEO_SET_ID
7============
8
9Name
10----
11
12VIDEO_SET_ID
13
14
15Synopsis
16--------
17
18.. cpp:function:: int ioctl(int fd, int request = VIDEO_SET_ID, int id)
19
20
21Arguments
22---------
23
24.. flat-table::
25 :header-rows: 0
26 :stub-columns: 0
27
28
29 - .. row 1
30
31 - int fd
32
33 - File descriptor returned by a previous call to open().
34
35 - .. row 2
36
37 - int request
38
39 - Equals VIDEO_SET_ID for this command.
40
41 - .. row 3
42
43 - int id
44
45 - video sub-stream id
46
47
48Description
49-----------
50
51This ioctl selects which sub-stream is to be decoded if a program or
52system stream is sent to the video device.
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
62
63
64.. flat-table::
65 :header-rows: 0
66 :stub-columns: 0
67
68
69 - .. row 1
70
71 - ``EINVAL``
72
73 - Invalid sub-stream id.