1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.audio
4 .. _AUDIO_CHANNEL_SELECT:
15 .. attention:: This ioctl is deprecated
20 .. c:macro:: AUDIO_CHANNEL_SELECT
22 ``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)``
35 - File descriptor returned by a previous call to open().
39 - audio_channel_select_t ch
41 - Select the output format of the audio (mono left/right, stereo).
46 This ioctl is for Digital TV devices only. To control a V4L2 decoder use the
47 V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
49 This ioctl call asks the Audio Device to select the requested channel if
55 On success 0 is returned, on error -1 and the ``errno`` variable is set
56 appropriately. The generic error codes are described at the
57 :ref:`Generic Error Codes <gen-errors>` chapter.