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Diffstat (limited to 'Documentation/userspace-api/media/dvb/audio-channel-select.rst')
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diff --git a/Documentation/userspace-api/media/dvb/audio-channel-select.rst b/Documentation/userspace-api/media/dvb/audio-channel-select.rst new file mode 100644 index 000000000..74093df92 --- /dev/null +++ b/Documentation/userspace-api/media/dvb/audio-channel-select.rst @@ -0,0 +1,57 @@ +.. 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. |