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.. -*- coding: utf-8; mode: rst -*-
.. _AUDIO_CHANNEL_SELECT:
====================
AUDIO_CHANNEL_SELECT
====================
Name
----
AUDIO_CHANNEL_SELECT
Synopsis
--------
.. c:function:: int ioctl(int fd, int request = AUDIO_CHANNEL_SELECT, audio_channel_select_t)
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_CHANNEL_SELECT for this command.
- .. row 3
- audio_channel_select_t ch
- Select the output format of the audio (mono left/right, stereo).
Description
-----------
This ioctl is for DVB devices only. To control a V4L2 decoder use the
V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
This ioctl call asks the Audio Device to select the requested channel if
possible.
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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