ALLEGRO_AUDIO_DEVICE - Allegro 5 API

       An opaque datatype that represents an audio device.

Allegro reference manual                                                           ALLEGRO_AUDIO_DEVICE(3alleg5)

       ALLEGRO_AUDIO_DEVICE - Allegro 5 API

              #include <allegro5/allegro_audio.h>

              typedef struct ALLEGRO_AUDIO_DEVICE ALLEGRO_AUDIO_DEVICE;