7.2.2.8. AUDIO_SELECT_SOURCE

7.2.2.8.1. Name

AUDIO_SELECT_SOURCE

7.2.2.8.2. Synopsis

int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, audio_stream_source_t source)

7.2.2.8.3. Arguments

int fd	File descriptor returned by a previous call to open().
int request	Equals AUDIO_SELECT_SOURCE for this command.
audio_stream_source_t source	Indicates the source that shall be used for the Audio stream.

7.2.2.8.4. 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.

7.2.2.8.5. 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.