6.3.2.8. AUDIO_SELECT_SOURCE¶
6.3.2.8.2. Synopsis¶
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AUDIO_SELECT_SOURCE¶
int ioctl(int fd, AUDIO_SELECT_SOURCE, struct audio_stream_source *source)
6.3.2.8.3. Arguments¶
| int fd | File descriptor returned by a previous call to open(). |
| audio_stream_source_t source | Indicates the source that shall be used for the Audio stream. |
6.3.2.8.4. 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.
6.3.2.8.5. 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
Generic Error Codes chapter.