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

.. _AUDIO_SET_STREAMTYPE:

====================
AUDIO_SET_STREAMTYPE
====================

Name
----

AUDIO_SET_STREAMTYPE


Synopsis
--------

.. cpp:function:: int  ioctl(fd, int request = AUDIO_SET_STREAMTYPE, int type)


Arguments
---------

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       -  int fd

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

    -  .. row 2

       -  int request

       -  Equals AUDIO_SET_STREAMTYPE for this command.

    -  .. row 3

       -  int type

       -  stream type


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

This ioctl tells the driver which kind of audio stream to expect. This
is useful if the stream offers several audio sub-streams like LPCM and
AC3.


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``

       -  type is not a valid or supported stream type.