Allegro 5 api
#include <allegro5/allegro_audio.h> enum ALLEGRO_CHANNEL_CONF
Speaker configuration (mono, stereo, 2.1, etc).
ALLEGRO_CHANNEL_CONF_1
ALLEGRO_CHANNEL_CONF_2
ALLEGRO_CHANNEL_CONF_3
ALLEGRO_CHANNEL_CONF_4
ALLEGRO_CHANNEL_CONF_5_1
ALLEGRO_CHANNEL_CONF_6_1
ALLEGRO_CHANNEL_CONF_7_1