0001 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
0002 .. c:namespace:: DTV.audio
0003
0004 .. _AUDIO_CHANNEL_SELECT:
0005
0006 ====================
0007 AUDIO_CHANNEL_SELECT
0008 ====================
0009
0010 Name
0011 ----
0012
0013 AUDIO_CHANNEL_SELECT
0014
0015 .. attention:: This ioctl is deprecated
0016
0017 Synopsis
0018 --------
0019
0020 .. c:macro:: AUDIO_CHANNEL_SELECT
0021
0022 ``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)``
0023
0024 Arguments
0025 ---------
0026
0027 .. flat-table::
0028 :header-rows: 0
0029 :stub-columns: 0
0030
0031 -
0032
0033 - int fd
0034
0035 - File descriptor returned by a previous call to open().
0036
0037 -
0038
0039 - audio_channel_select_t ch
0040
0041 - Select the output format of the audio (mono left/right, stereo).
0042
0043 Description
0044 -----------
0045
0046 This ioctl is for Digital TV devices only. To control a V4L2 decoder use the
0047 V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
0048
0049 This ioctl call asks the Audio Device to select the requested channel if
0050 possible.
0051
0052 Return Value
0053 ------------
0054
0055 On success 0 is returned, on error -1 and the ``errno`` variable is set
0056 appropriately. The generic error codes are described at the
0057 :ref:`Generic Error Codes <gen-errors>` chapter.
