video-set-format.rst

.. -*- coding: utf-8; mode: rst -*-

.. _VIDEO_SET_FORMAT:

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

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.

Synopsis
--------

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

Arguments
----------



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       -  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 ??.


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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       -  ``EINVAL``

       -  format is not a valid video format.