1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.video
3
4.. _VIDEO_TRY_COMMAND:
5
6=================
7VIDEO_TRY_COMMAND
8=================
9
10Name
11----
12
13VIDEO_TRY_COMMAND
14
15.. attention:: This ioctl is deprecated.
16
17Synopsis
18--------
19
20.. c:macro:: VIDEO_TRY_COMMAND
21
22``int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)``
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_TRY_COMMAND for this command.
42
43    -  .. row 3
44
45       -  struct video_command \*cmd
46
47       -  Try a decoder command.
48
49Description
50-----------
51
52This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
53this ioctl has been replaced by the
54:ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` ioctl.
55
56This ioctl tries a decoder command. The ``video_command`` struct is a
57subset of the ``v4l2_decoder_cmd`` struct, so refer to the
58:ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation
59for more information.
60
61Return Value
62------------
63
64On success 0 is returned, on error -1 and the ``errno`` variable is set
65appropriately. The generic error codes are described at the
66:ref:`Generic Error Codes <gen-errors>` chapter.
67