get_volume (3) Linux Manual Page
NAME
get_volume – Retrieves the global sound output volume. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
void get_volume(int *digi_volume, int *midi_volume);
DESCRIPTION
Retrieves the global sound output volume, both for digital samples and MIDI playback, as integers from 0 to 255. Parameters digi_volume and midi_volume must be valid pointers to int, or NULL if not interested in specific value.
SEE ALSO
set_volume(3), get_hardware_volume(3)