| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _AUDIO_SELECT_SOURCE: |
| |
| =================== |
| AUDIO_SELECT_SOURCE |
| =================== |
| |
| Name |
| ---- |
| |
| AUDIO_SELECT_SOURCE |
| |
| |
| Synopsis |
| -------- |
| |
| .. cpp:function:: int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source) |
| |
| |
| 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_SELECT_SOURCE for this command. |
| |
| - .. row 3 |
| |
| - audio_stream_source_t source |
| |
| - Indicates the source that shall be used for the Audio stream. |
| |
| |
| Description |
| ----------- |
| |
| This ioctl call informs the audio device which source shall be used for |
| the input data. The possible sources are demux or memory. If |
| AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device |
| through the write command. |
| |
| |
| 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. |