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Diffstat (limited to 'Documentation/media/uapi/dvb/audio-channel-select.rst')
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diff --git a/Documentation/media/uapi/dvb/audio-channel-select.rst b/Documentation/media/uapi/dvb/audio-channel-select.rst new file mode 100644 index 000000000000..69df4c0f2fb2 --- /dev/null +++ b/Documentation/media/uapi/dvb/audio-channel-select.rst @@ -0,0 +1,63 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _AUDIO_CHANNEL_SELECT: + +==================== +AUDIO_CHANNEL_SELECT +==================== + +Name +---- + +AUDIO_CHANNEL_SELECT + + +Synopsis +-------- + +.. cpp:function:: int ioctl(int fd, int request = AUDIO_CHANNEL_SELECT, audio_channel_select_t) + + +Arguments +--------- + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + + - .. row 1 + + - int fd + + - File descriptor returned by a previous call to open(). + + - .. row 2 + + - int request + + - Equals AUDIO_CHANNEL_SELECT for this command. + + - .. row 3 + + - audio_channel_select_t ch + + - Select the output format of the audio (mono left/right, stereo). + + +Description +----------- + +This ioctl is for DVB 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. |