58 lines
1.1 KiB
ReStructuredText
58 lines
1.1 KiB
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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.. _AUDIO_SELECT_SOURCE:
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AUDIO_SELECT_SOURCE
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===================
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Description
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-----------
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This ioctl call informs the audio device which source shall be used for
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the input data. The possible sources are demux or memory. If
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AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
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through the write command.
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Synopsis
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--------
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.. c:function:: int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source)
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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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- .. row 1
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- int fd
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- File descriptor returned by a previous call to open().
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- .. row 2
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- int request
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- Equals AUDIO_SELECT_SOURCE for this command.
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- .. row 3
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- audio_stream_source_t source
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- Indicates the source that shall be used for the Audio stream.
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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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