NAME
detect_midi_driver - Detects whether the specified MIDI sound device is
available. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int detect_midi_driver(int driver_id);
DESCRIPTION
Detects whether the specified MIDI sound device is available. This
function must be called _before_ install_sound().
RETURN VALUE
Returns the maximum number of voices that the driver can provide, or
zero if the hardware is not present.
There are two special-case return values that you should watch out for:
if this function returns -1 it is a note-stealing driver (eg. DIGMID)
that shares voices with the current digital sound driver, and if it
returns 0xFFFF it is an external device like an MPU-401 where there is
no way to determine how many voices are available.
SEE ALSO
install_sound(3alleg), reserve_voices(3alleg)