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- .. -*- coding: utf-8; mode: rst -*-
- .. _VIDEO_TRY_COMMAND:
- =================
- VIDEO_TRY_COMMAND
- =================
- Name
- ----
- VIDEO_TRY_COMMAND
- .. attention:: This ioctl is deprecated.
- Synopsis
- --------
- .. c:function:: int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)
- :name: VIDEO_TRY_COMMAND
- 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_TRY_COMMAND for this command.
- - .. row 3
- - struct video_command \*cmd
- - Try a decoder command.
- Description
- -----------
- This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
- this ioctl has been replaced by the
- :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` ioctl.
- This ioctl tries a decoder command. The ``video_command`` struct is a
- subset of the ``v4l2_decoder_cmd`` struct, so refer to the
- :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation
- for more information.
- 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.
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