1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.video
15 .. attention:: This ioctl is deprecated.
20 .. c:macro:: VIDEO_TRY_COMMAND
22 ``int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)``
35 - File descriptor returned by a previous call to open().
41 - Equals VIDEO_TRY_COMMAND for this command.
45 - struct video_command \*cmd
47 - Try a decoder command.
52 This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
53 this ioctl has been replaced by the
54 :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` ioctl.
56 This ioctl tries a decoder command. The ``video_command`` struct is a
57 subset of the ``v4l2_decoder_cmd`` struct, so refer to the
58 :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation
64 On success 0 is returned, on error -1 and the ``errno`` variable is set
65 appropriately. The generic error codes are described at the
66 :ref:`Generic Error Codes <gen-errors>` chapter.