tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_GET_PTS:
11
12=============
13VIDEO_GET_PTS
14=============
15
16Name
17----
18
19VIDEO_GET_PTS
20
21.. attention:: This ioctl is deprecated.
22
23Synopsis
24--------
25
26.. c:function:: int ioctl(int fd, VIDEO_GET_PTS, __u64 *pts)
27 :name: VIDEO_GET_PTS
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_GET_PTS for this command.
49
50 - .. row 3
51
52 - __u64 \*pts
53
54 - Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 /
55 ISO/IEC 13818-1.
56
57 The PTS should belong to the currently played frame if possible,
58 but may also be a value close to it like the PTS of the last
59 decoded frame or the last PTS extracted by the PES parser.
60
61
62Description
63-----------
64
65This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
66this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_PTS``
67control.
68
69This ioctl call asks the Video Device to return the current PTS
70timestamp.
71
72
73Return Value
74------------
75
76On success 0 is returned, on error -1 and the ``errno`` variable is set
77appropriately. The generic error codes are described at the
78:ref:`Generic Error Codes <gen-errors>` chapter.