.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
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.. c:namespace:: DTV.audio
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.. _AUDIO_CHANNEL_SELECT:
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====================
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AUDIO_CHANNEL_SELECT
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====================
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Name
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----
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AUDIO_CHANNEL_SELECT
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.. attention:: This ioctl is deprecated
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Synopsis
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--------
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.. c:macro:: AUDIO_CHANNEL_SELECT
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``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)``
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Arguments
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---------
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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-
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- int fd
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- File descriptor returned by a previous call to open().
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-
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- audio_channel_select_t ch
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- Select the output format of the audio (mono left/right, stereo).
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Description
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-----------
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This ioctl is for Digital TV devices only. To control a V4L2 decoder use the
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V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
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This ioctl call asks the Audio Device to select the requested channel if
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possible.
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Return Value
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------------
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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