midi_msg_callback(3) Allegro manual midi_msg_callback(3)NAME
midi_msg_callback, midi_meta_callback, midi_sysex_callback - Hook func‐
tions allowing you to intercept MIDI player events. Allegro game pro‐
gramming library.
SYNOPSIS
#include <allegro.h>
extern void (*midi_msg_callback)(int msg, int byte1, int byte2);
extern void (*midi_meta_callback)(int type, const unsigned char *data,
int length);
extern void (*midi_sysex_callback)(const unsigned char *data, int
length);
DESCRIPTION
Hook functions allowing you to intercept MIDI player events. If set to
anything other than NULL, these routines will be called for each MIDI
message, meta-event, and system exclusive data block respectively. They
will execute in an interrupt handler context, so all the code and data
they use should be locked, and they must not call any operating system
functions. In general you just use these routines to set some flags and
respond to them later in your mainline code.
SEE ALSOplay_midi(3)Allegro version 4.4.2 midi_msg_callback(3)
