18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: DTV.audio 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _AUDIO_SELECT_SOURCE: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci=================== 78c2ecf20Sopenharmony_ciAUDIO_SELECT_SOURCE 88c2ecf20Sopenharmony_ci=================== 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci---- 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ciAUDIO_SELECT_SOURCE 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci.. attention:: This ioctl is deprecated 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciSynopsis 188c2ecf20Sopenharmony_ci-------- 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci.. c:macro:: AUDIO_SELECT_SOURCE 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci``int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)`` 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ciArguments 258c2ecf20Sopenharmony_ci--------- 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci.. flat-table:: 288c2ecf20Sopenharmony_ci :header-rows: 0 298c2ecf20Sopenharmony_ci :stub-columns: 0 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci - 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci - int fd 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci - File descriptor returned by a previous call to open(). 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci - 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci - audio_stream_source_t source 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci - Indicates the source that shall be used for the Audio stream. 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ciDescription 448c2ecf20Sopenharmony_ci----------- 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_ciThis ioctl call informs the audio device which source shall be used for 478c2ecf20Sopenharmony_cithe input data. The possible sources are demux or memory. If 488c2ecf20Sopenharmony_ciAUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device 498c2ecf20Sopenharmony_cithrough the write command. 508c2ecf20Sopenharmony_ci 518c2ecf20Sopenharmony_ciReturn Value 528c2ecf20Sopenharmony_ci------------ 538c2ecf20Sopenharmony_ci 548c2ecf20Sopenharmony_ciOn success 0 is returned, on error -1 and the ``errno`` variable is set 558c2ecf20Sopenharmony_ciappropriately. The generic error codes are described at the 568c2ecf20Sopenharmony_ci:ref:`Generic Error Codes <gen-errors>` chapter. 57