Pulseaudiotype dir = | Dir_nodirection | (* Invalid direction. *) | 
| Dir_playback | (* Playback stream. *) | 
| Dir_record | (* Record stream. *) | 
| Dir_upload | (* Sample upload stream. *) | 
Direction of the stream.
type buffer_attr = {}Attributes of the buffer.
module Simple : sig ... endSimple pulseaudio interface.