1 .. -*- coding: utf-8; mode: rst -*-
3 .. _AUDIO_SELECT_SOURCE:
18 .. cpp:function:: int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source)
33 - File descriptor returned by a previous call to open().
39 - Equals AUDIO_SELECT_SOURCE for this command.
43 - audio_stream_source_t source
45 - Indicates the source that shall be used for the Audio stream.
51 This ioctl call informs the audio device which source shall be used for
52 the input data. The possible sources are demux or memory. If
53 AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device
54 through the write command.
60 On success 0 is returned, on error -1 and the ``errno`` variable is set
61 appropriately. The generic error codes are described at the
62 :ref:`Generic Error Codes <gen-errors>` chapter.