tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.video
3
4.. _VIDEO_SLOWMOTION:
5
6================
7VIDEO_SLOWMOTION
8================
9
10Name
11----
12
13VIDEO_SLOWMOTION
14
15.. attention:: This ioctl is deprecated.
16
17Synopsis
18--------
19
20.. c:macro:: VIDEO_SLOWMOTION
21
22``int ioctl(fd, VIDEO_SLOWMOTION, int nFrames)``
23
24Arguments
25---------
26
27.. flat-table::
28 :header-rows: 0
29 :stub-columns: 0
30
31 - .. row 1
32
33 - int fd
34
35 - File descriptor returned by a previous call to open().
36
37 - .. row 2
38
39 - int request
40
41 - Equals VIDEO_SLOWMOTION for this command.
42
43 - .. row 3
44
45 - int nFrames
46
47 - The number of times to repeat each frame.
48
49Description
50-----------
51
52This ioctl call asks the video device to repeat decoding frames N number
53of times. This call can only be used if VIDEO_SOURCE_MEMORY is
54selected.
55
56Return Value
57------------
58
59On success 0 is returned, on error -1 and the ``errno`` variable is set
60appropriately. The generic error codes are described at the
61:ref:`Generic Error Codes <gen-errors>` chapter.
62
63
64.. flat-table::
65 :header-rows: 0
66 :stub-columns: 0
67
68 - .. row 1
69
70 - ``EPERM``
71
72 - Mode VIDEO_SOURCE_MEMORY not selected.