private void parseMidi() {
try {
// Allow for alternate file extensions of midi files.
File midiFile = new File("data/out/" + name + ".midi");
File altFile = new File("data/out/" + name + ".mid");
if (!midiFile.exists() && altFile.exists()) {
midiFile = altFile;
}
// parse midi
Sequence sequence = MidiSystem.getSequence(midiFile);
resolution = sequence.getResolution();
for (int i = 0; i < staves; ++i) {
currNotes[i] = notes[i].iterator();
}
MidiParser parser = new MidiParser();
parser.addParserListener(this);
parser.parse(sequence);
// initialize any rests trailing at the end
for (int i = 0; i < staves; ++i) {
Vector<Chord> currChords = chords[i];
Iterator<NotePanel> currNote = currNotes[i];
long tempTime = 0;
for (int j = currChords.size() - 1; j >= 0; --j) {
if (!currChords.get(j).isTie()) {
tempTime = currChords.get(j).getTime() + currChords.get(j).getDuration();
break;
}
}
while (currNote.hasNext()) {
NotePanel notePanel = currNote.next();
if (notePanel.getNote() != null) {
notePanel.setTime(tempTime).setTempo(tempo);
tempTime += notePanel.getDuration();
Chord chord = new Chord(notePanel);
currChords.add(chord);
}
}
}
// attach staff lines
for (int layer = 0; layer < staves; ++layer) {
NotePanel prevNote = null;
for (Chord chord : chords[layer]) {
for (NotePanel note : chord.notes) {
double staffLine = 0.0;
for (double line : staffLines.get(layer).get(note.page - 1)) {
if (staffLine < 0.0001 || Math.abs(staffLine - note.y) > Math.abs(line - note.y)) {
staffLine = line;
}
}
if (prevNote != null) {
if (Math.abs(staffLine - prevNote.staffLine) > 0.001) {
// either reached the end of the line, or the note is really high/low
// make a hacky guess if the note is really high/low,
// and if so, set its staffline equal to the previous note's
if (prevNote.x < note.x + 1.0) {
note.setStaffLine(prevNote.staffLine);
prevNote = note;
continue;
}
}
}
note.setStaffLine(staffLine);
prevNote = note;
}
}
}
} catch (Exception e) {
System.err.println("Parsing the score from Lilypond's output has failed. Error: ");
e.printStackTrace();
}
}
