video-get-capabilities.rst

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

.. _VIDEO_GET_CAPABILITIES:

======================
VIDEO_GET_CAPABILITIES
======================

Name
----

VIDEO_GET_CAPABILITIES


Synopsis
--------

.. c:function:: int ioctl(fd, int request = VIDEO_GET_CAPABILITIES, unsigned int *cap)


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_GET_CAPABILITIES for this command.

    -  .. row 3

       -  unsigned int \*cap

       -  Pointer to a location where to store the capability information.


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

This ioctl call asks the video device about its decoding capabilities.
On success it returns and integer which has bits set according to the
defines 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.