get_hardware_volume - Man Page

#include <allegro.h>

void get_hardware_volume(int *digi_volume, int *midi_volume);

Retrieves the hardware sound output volume, both for digital samples and MIDI playback, as integers from 0 to 255, or -1 if the information is not available. Parameters digi_volume and midi_volume must be valid pointers to int, or NULL if not interested in specific value.

set_hardware_volume(3), get_volume(3)

get_volume(3).