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derselbst 2018-06-24 13:01:31 +02:00
parent 90c2d76709
commit 9382edabd5
129 changed files with 33394 additions and 27137 deletions
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161
doc/fluidsynth_metronome.c
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@ -30,108 +30,131 @@ unsigned int strong_note = 34;
unsigned int pattern_size = 4;
/* prototype */
void
sequencer_callback (unsigned int time, fluid_event_t *event,
fluid_sequencer_t *seq, void *data);
sequencer_callback(unsigned int time, fluid_event_t *event,
fluid_sequencer_t *seq, void *data);
/* schedule a note on message */
void
schedule_noteon (int chan, short key, unsigned int ticks)
schedule_noteon(int chan, short key, unsigned int ticks)
{
fluid_event_t *ev = new_fluid_event ();
fluid_event_set_source (ev, -1);
fluid_event_set_dest (ev, synth_destination);
fluid_event_noteon (ev, chan, key, 127);
fluid_sequencer_send_at (sequencer, ev, ticks, 1);
delete_fluid_event (ev);
fluid_event_t *ev = new_fluid_event();
fluid_event_set_source(ev, -1);
fluid_event_set_dest(ev, synth_destination);
fluid_event_noteon(ev, chan, key, 127);
fluid_sequencer_send_at(sequencer, ev, ticks, 1);
delete_fluid_event(ev);
}
/* schedule a timer event (shall trigger the callback) */
void
schedule_timer_event ()
schedule_timer_event()
{
fluid_event_t *ev = new_fluid_event ();
fluid_event_set_source (ev, -1);
fluid_event_set_dest (ev, client_destination);
fluid_event_timer (ev, NULL);
fluid_sequencer_send_at (sequencer, ev, time_marker, 1);
delete_fluid_event (ev);
fluid_event_t *ev = new_fluid_event();
fluid_event_set_source(ev, -1);
fluid_event_set_dest(ev, client_destination);
fluid_event_timer(ev, NULL);
fluid_sequencer_send_at(sequencer, ev, time_marker, 1);
delete_fluid_event(ev);
}
/* schedule the metronome pattern */
void
schedule_pattern ()
schedule_pattern()
{
int i, note_time;
note_time = time_marker;
for (i = 0; i < pattern_size; ++i) {
schedule_noteon (9, i ? weak_note : strong_note, note_time);
for(i = 0; i < pattern_size; ++i)
{
schedule_noteon(9, i ? weak_note : strong_note, note_time);
note_time += note_duration;
}
time_marker = note_time;
}
void
sequencer_callback (unsigned int time, fluid_event_t *event,
fluid_sequencer_t *seq, void *data)
sequencer_callback(unsigned int time, fluid_event_t *event,
fluid_sequencer_t *seq, void *data)
{
schedule_timer_event ();
schedule_pattern ();
schedule_timer_event();
schedule_pattern();
}
void
usage (char* prog_name)
usage(char *prog_name)
{
printf ("Usage: %s soundfont.sf2 [beats [tempo]]\n", prog_name);
printf ("\t(optional) beats: number of pattern beats, default %d\n",
pattern_size);
printf ("\t(optional) tempo: BPM (Beats Per Minute), default %d\n", TEMPO);
printf("Usage: %s soundfont.sf2 [beats [tempo]]\n", prog_name);
printf("\t(optional) beats: number of pattern beats, default %d\n",
pattern_size);
printf("\t(optional) tempo: BPM (Beats Per Minute), default %d\n", TEMPO);
}
int
main (int argc, char *argv[])
main(int argc, char *argv[])
{
int n;
fluid_settings_t *settings;
settings = new_fluid_settings ();
if (argc < 2) {
usage (argv[0]);
} else {
/* create the synth, driver and sequencer instances */
synth = new_fluid_synth (settings);
audiodriver = new_fluid_audio_driver (settings, synth);
sequencer = new_fluid_sequencer ();
/* register the synth with the sequencer */
synth_destination = fluid_sequencer_register_fluidsynth (sequencer,
synth);
/* register the client name and callback */
client_destination = fluid_sequencer_register_client (sequencer,
"fluidsynth_metronome", sequencer_callback, NULL);
/* load a SoundFont */
n = fluid_synth_sfload (synth, argv[1], 1);
if (n != -1) {
if (argc > 2) {
n = atoi (argv[2]);
if (n > 0) pattern_size = n;
}
if (argc > 3) {
n = atoi (argv[3]);
if (n > 0) note_duration = 60000 / n;
}
/* get the current time in ticks */
time_marker = fluid_sequencer_get_tick (sequencer);
/* schedule patterns */
schedule_pattern ();
schedule_timer_event ();
schedule_pattern ();
/* wait for user input */
printf ("press <Enter> to stop\n");
n = getchar ();
}
/* clean and exit */
delete_fluid_sequencer (sequencer);
delete_fluid_audio_driver (audiodriver);
delete_fluid_synth (synth);
settings = new_fluid_settings();
if(argc < 2)
{
usage(argv[0]);
}
delete_fluid_settings (settings);
else
{
/* create the synth, driver and sequencer instances */
synth = new_fluid_synth(settings);
audiodriver = new_fluid_audio_driver(settings, synth);
sequencer = new_fluid_sequencer();
/* register the synth with the sequencer */
synth_destination = fluid_sequencer_register_fluidsynth(sequencer,
synth);
/* register the client name and callback */
client_destination = fluid_sequencer_register_client(sequencer,
"fluidsynth_metronome", sequencer_callback, NULL);
/* load a SoundFont */
n = fluid_synth_sfload(synth, argv[1], 1);
if(n != -1)
{
if(argc > 2)
{
n = atoi(argv[2]);
if(n > 0)
{
pattern_size = n;
}
}
if(argc > 3)
{
n = atoi(argv[3]);
if(n > 0)
{
note_duration = 60000 / n;
}
}
/* get the current time in ticks */
time_marker = fluid_sequencer_get_tick(sequencer);
/* schedule patterns */
schedule_pattern();
schedule_timer_event();
schedule_pattern();
/* wait for user input */
printf("press <Enter> to stop\n");
n = getchar();
}
/* clean and exit */
delete_fluid_sequencer(sequencer);
delete_fluid_audio_driver(audiodriver);
delete_fluid_synth(synth);
}
delete_fluid_settings(settings);
return 0;
}