0001 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
0002 .. c:namespace:: DTV.video
0003
0004 .. _VIDEO_TRY_COMMAND:
0005
0006 =================
0007 VIDEO_TRY_COMMAND
0008 =================
0009
0010 Name
0011 ----
0012
0013 VIDEO_TRY_COMMAND
0014
0015 .. attention:: This ioctl is deprecated.
0016
0017 Synopsis
0018 --------
0019
0020 .. c:macro:: VIDEO_TRY_COMMAND
0021
0022 ``int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)``
0023
0024 Arguments
0025 ---------
0026
0027 .. flat-table::
0028 :header-rows: 0
0029 :stub-columns: 0
0030
0031 - .. row 1
0032
0033 - int fd
0034
0035 - File descriptor returned by a previous call to open().
0036
0037 - .. row 2
0038
0039 - int request
0040
0041 - Equals VIDEO_TRY_COMMAND for this command.
0042
0043 - .. row 3
0044
0045 - struct video_command \*cmd
0046
0047 - Try a decoder command.
0048
0049 Description
0050 -----------
0051
0052 This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
0053 this ioctl has been replaced by the
0054 :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` ioctl.
0055
0056 This ioctl tries a decoder command. The ``video_command`` struct is a
0057 subset of the ``v4l2_decoder_cmd`` struct, so refer to the
0058 :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation
0059 for more information.
0060
0061 Return Value
0062 ------------
0063
0064 On success 0 is returned, on error -1 and the ``errno`` variable is set
0065 appropriately. The generic error codes are described at the
0066 :ref:`Generic Error Codes <gen-errors>` chapter.
