Allegro 5 api
#include <allegro5/allegro_audio.h> enum ALLEGRO_AUDIO_DEPTH
Sample depth and type, and signedness. Mixers only use 32-bit signed float (-1..+1), or 16-bit signed integers. The unsigned value is a bit-flag applied to the depth value.
ALLEGRO_AUDIO_DEPTH_INT8
ALLEGRO_AUDIO_DEPTH_INT16
ALLEGRO_AUDIO_DEPTH_INT24
ALLEGRO_AUDIO_DEPTH_FLOAT32
ALLEGRO_AUDIO_DEPTH_UNSIGNED
For convenience:
ALLEGRO_AUDIO_DEPTH_UINT8
ALLEGRO_AUDIO_DEPTH_UINT16
ALLEGRO_AUDIO_DEPTH_UINT24