al_get_audio_stream_event_source - Allegro 5 API

       Retrieve the associated event source.

       See        al_get_audio_stream_fragment(3alleg5)        for        a       description       of       the
       ALLEGRO_EVENT_AUDIO_STREAM_FRAGMENT(3alleg5) event that audio streams emit.

Allegro reference manual                                               al_get_audio_stream_event_source(3alleg5)

       al_get_audio_stream_event_source - Allegro 5 API

              #include <allegro5/allegro_audio.h>

              ALLEGRO_EVENT_SOURCE *al_get_audio_stream_event_source(
                 ALLEGRO_AUDIO_STREAM *stream)