.. 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

.. _AUDIO_SET_MUTE:

==============
AUDIO_SET_MUTE
==============

Name
----

AUDIO_SET_MUTE

.. attention:: This ioctl is deprecated

Synopsis
--------

.. c:function:: int  ioctl(int fd, AUDIO_SET_MUTE, boolean state)
    :name: AUDIO_SET_MUTE


Arguments
---------

.. flat-table::
    :header-rows:  0
    :stub-columns: 0


    -

       -  int fd

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

    -

       -  boolean state

       -  Indicates if audio device shall mute or not.

          TRUE: Audio Mute

          FALSE: Audio Un-mute


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

This ioctl is for Digital TV devices only. To control a V4L2 decoder use the
V4L2 :ref:`VIDIOC_DECODER_CMD` with the
``V4L2_DEC_CMD_START_MUTE_AUDIO`` flag instead.

This ioctl call asks the audio device to mute the stream that is
currently being played.


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.