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Linux kernel mirror (for testing)
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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/media/uapi/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _VIDEO_SLOWMOTION:
11
12================
13VIDEO_SLOWMOTION
14================
15
16Name
17----
18
19VIDEO_SLOWMOTION
20
21.. attention:: This ioctl is deprecated.
22
23Synopsis
24--------
25
26.. c:function:: int ioctl(fd, VIDEO_SLOWMOTION, int nFrames)
27 :name: VIDEO_SLOWMOTION
28
29
30Arguments
31---------
32
33.. flat-table::
34 :header-rows: 0
35 :stub-columns: 0
36
37
38 - .. row 1
39
40 - int fd
41
42 - File descriptor returned by a previous call to open().
43
44 - .. row 2
45
46 - int request
47
48 - Equals VIDEO_SLOWMOTION for this command.
49
50 - .. row 3
51
52 - int nFrames
53
54 - The number of times to repeat each frame.
55
56
57Description
58-----------
59
60This ioctl call asks the video device to repeat decoding frames N number
61of times. This call can only be used if VIDEO_SOURCE_MEMORY is
62selected.
63
64
65Return Value
66------------
67
68On success 0 is returned, on error -1 and the ``errno`` variable is set
69appropriately. The generic error codes are described at the
70:ref:`Generic Error Codes <gen-errors>` chapter.
71
72
73
74.. flat-table::
75 :header-rows: 0
76 :stub-columns: 0
77
78
79 - .. row 1
80
81 - ``EPERM``
82
83 - Mode VIDEO_SOURCE_MEMORY not selected.