public static void RoundDurations(List<MidiTrack> tracks, int quarternote)
{
foreach (MidiTrack track in tracks ) {
MidiNote prevNote = null;
for (int i = 0; i < track.Notes.Count-1; i++) {
MidiNote note1 = track.Notes[i];
if (prevNote == null) {
prevNote = note1;
}
/* Get the next note that has a different start time */
MidiNote note2 = note1;
for (int j = i+1; j < track.Notes.Count; j++) {
note2 = track.Notes[j];
if (note1.StartTime < note2.StartTime) {
break;
}
}
int maxduration = note2.StartTime - note1.StartTime;
int dur = 0;
if (quarternote <= maxduration)
dur = quarternote;
else if (quarternote/2 <= maxduration)
dur = quarternote/2;
else if (quarternote/3 <= maxduration)
dur = quarternote/3;
else if (quarternote/4 <= maxduration)
dur = quarternote/4;
if (dur < note1.Duration) {
dur = note1.Duration;
}
/* Special case: If the previous note's duration
* matches this note's duration, we can make a notepair.
* So don't expand the duration in that case.
*/
if ((prevNote.StartTime + prevNote.Duration == note1.StartTime) &&
(prevNote.Duration == note1.Duration)) {
dur = note1.Duration;
}
note1.Duration = dur;
if (track.Notes[i+1].StartTime != note1.StartTime) {
prevNote = note1;
}
}
}
}
