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.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: DTV.audio
.. _AUDIO_CHANNEL_SELECT:
====================
AUDIO_CHANNEL_SELECT
====================
Name
----
AUDIO_CHANNEL_SELECT
.. attention:: This ioctl is deprecated
Synopsis
--------
.. c:macro:: AUDIO_CHANNEL_SELECT
``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)``
Arguments
---------
.. flat-table::
:header-rows: 0
:stub-columns: 0
-
- int fd
- File descriptor returned by a previous call to open().
-
- audio_channel_select_t ch
- Select the output format of the audio (mono left/right, stereo).
Description
-----------
This ioctl is for Digital TV 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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