1.. -*- coding: utf-8; mode: rst -*-
2
3.. _VIDEO_TRY_COMMAND:
4
5=================
6VIDEO_TRY_COMMAND
7=================
8
9Name
10----
11
12VIDEO_TRY_COMMAND
13
14.. attention:: This ioctl is deprecated.
15
16Synopsis
17--------
18
19.. c:function:: int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)
20    :name: VIDEO_TRY_COMMAND
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_TRY_COMMAND for this command.
42
43    -  .. row 3
44
45       -  struct video_command \*cmd
46
47       -  Try a decoder command.
48
49
50Description
51-----------
52
53This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
54this ioctl has been replaced by the
55:ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` ioctl.
56
57This ioctl tries a decoder command. The ``video_command`` struct is a
58subset of the ``v4l2_decoder_cmd`` struct, so refer to the
59:ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation
60for more information.
61
62
63Return Value
64------------
65
66On success 0 is returned, on error -1 and the ``errno`` variable is set
67appropriately. The generic error codes are described at the
68:ref:`Generic Error Codes <gen-errors>` chapter.
69