al_get_audio_depth_size - Allegro 5 API

       Return  the  size  of  a  sample, in bytes, for the given format.  The format is one of the values listed
       under ALLEGRO_AUDIO_DEPTH(3alleg5).

Allegro reference manual                                                        al_get_audio_depth_size(3alleg5)

       al_get_audio_depth_size - Allegro 5 API

              #include <allegro5/allegro_audio.h>

              size_t al_get_audio_depth_size(ALLEGRO_AUDIO_DEPTH depth)