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.. -*- coding: utf-8; mode: rst -*-
.. _AUDIO_SELECT_SOURCE:
===================
AUDIO_SELECT_SOURCE
===================
Name
----
AUDIO_SELECT_SOURCE
Synopsis
--------
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source)
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 AUDIO_SELECT_SOURCE for this command.
- .. row 3
- audio_stream_source_t source
- Indicates the source that shall be used for the Audio stream.
Description
-----------
This ioctl call informs the audio device which source shall be used for
the input data. The possible sources are demux or memory. If
AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
through the write command.
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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