.. Permission is granted to copy, distribute and/or modify this
.. document under the terms of the GNU Free Documentation License,
.. Version 1.1 or any later version published by the Free Software
.. Foundation, with no Invariant Sections, no Front-Cover Texts
.. and no Back-Cover Texts. A copy of the license is included at
.. Documentation/media/uapi/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections

.. _VIDEO_SET_FORMAT:

================
VIDEO_SET_FORMAT
================

Name
----

VIDEO_SET_FORMAT

.. attention:: This ioctl is deprecated.

Synopsis
--------

.. c:function:: int ioctl(fd, VIDEO_SET_FORMAT, video_format_t format)
    :name: VIDEO_SET_FORMAT


Arguments
---------

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    -  .. row 1

       -  int fd

       -  File descriptor returned by a previous call to open().

    -  .. row 2

       -  int request

       -  Equals VIDEO_SET_FORMAT for this command.

    -  .. row 3

       -  video_format_t format

       -  video format of TV as defined in section ??.


Description
-----------

This ioctl sets the screen format (aspect ratio) of the connected output
device (TV) so that the output of the decoder can be adjusted
accordingly.

.. c:type:: video_format_t

.. code-block:: c

	typedef enum {
		VIDEO_FORMAT_4_3,     /* Select 4:3 format */
		VIDEO_FORMAT_16_9,    /* Select 16:9 format. */
		VIDEO_FORMAT_221_1    /* 2.21:1 */
	} video_format_t;

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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    -  .. row 1

       -  ``EINVAL``

       -  format is not a valid video format.