aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/userspace-api/media/dvb/video-get-frame-count.rst
blob: 5f65f8dba184fd884cace0bbaf2a80091b404e75 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later

.. _VIDEO_GET_FRAME_COUNT:

=====================
VIDEO_GET_FRAME_COUNT
=====================

Name
----

VIDEO_GET_FRAME_COUNT

.. attention:: This ioctl is deprecated.

Synopsis
--------

.. c:function:: int ioctl(int fd, VIDEO_GET_FRAME_COUNT, __u64 *pts)
    :name: VIDEO_GET_FRAME_COUNT


Arguments
---------

.. flat-table::
    :header-rows:  0
    :stub-columns: 0


    -  .. row 1

       -  int fd

       -  File descriptor returned by a previous call to open().

    -  .. row 2

       -  int request

       -  Equals VIDEO_GET_FRAME_COUNT for this command.

    -  .. row 3

       -  __u64 \*pts

       -  Returns the number of frames displayed since the decoder was
	  started.


Description
-----------

This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_FRAME``
control.

This ioctl call asks the Video Device to return the number of displayed
frames since the decoder was started.


Return Value
------------

On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.