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Linux kernel mirror (for testing)
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1.. -*- coding: utf-8; mode: rst -*-
2
3.. _VIDEO_GET_FRAME_RATE:
4
5====================
6VIDEO_GET_FRAME_RATE
7====================
8
9Name
10----
11
12VIDEO_GET_FRAME_RATE
13
14.. attention:: This ioctl is deprecated.
15
16Synopsis
17--------
18
19.. c:function:: int ioctl(int fd, VIDEO_GET_FRAME_RATE, unsigned int *rate)
20 :name: VIDEO_GET_FRAME_RATE
21
22
23Arguments
24---------
25
26.. flat-table::
27 :header-rows: 0
28 :stub-columns: 0
29
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_GET_FRAME_RATE for this command.
42
43 - .. row 3
44
45 - unsigned int \*rate
46
47 - Returns the framerate in number of frames per 1000 seconds.
48
49
50Description
51-----------
52
53This ioctl call asks the Video Device to return the current framerate.
54
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.