audio-select-source.rst (1135B)
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.audio 3 4.. _AUDIO_SELECT_SOURCE: 5 6=================== 7AUDIO_SELECT_SOURCE 8=================== 9 10Name 11---- 12 13AUDIO_SELECT_SOURCE 14 15.. attention:: This ioctl is deprecated 16 17Synopsis 18-------- 19 20.. c:macro:: AUDIO_SELECT_SOURCE 21 22``int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)`` 23 24Arguments 25--------- 26 27.. flat-table:: 28 :header-rows: 0 29 :stub-columns: 0 30 31 - 32 33 - int fd 34 35 - File descriptor returned by a previous call to open(). 36 37 - 38 39 - audio_stream_source_t source 40 41 - Indicates the source that shall be used for the Audio stream. 42 43Description 44----------- 45 46This ioctl call informs the audio device which source shall be used for 47the input data. The possible sources are demux or memory. If 48AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device 49through the write command. 50 51Return Value 52------------ 53 54On success 0 is returned, on error -1 and the ``errno`` variable is set 55appropriately. The generic error codes are described at the 56:ref:`Generic Error Codes <gen-errors>` chapter.