detect_midi_driver (3) - Linux Manuals

detect_midi_driver: Detects whether the specified MIDI sound device is available. Allegro game programming library.

Command to display detect_midi_driver manual in Linux: $ man 3 detect_midi_driver

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.