public MIDIReader(String filename) {
this.filename = filename;
try {
this.recebedor = MidiSystem.getReceiver();
this.sequencia = MidiSystem.getSequence(new File(filename));
this.tempoProcessor = new MidiUtils.TempoCache(sequencia);
this.player = MidiSystem.getSequencer(true);
this.player.setSequence(sequencia);
this.player.open();
this.interval = 0.5f;
this.loadNotes();
this.duration = this.getRealDuration();
} catch (Exception ex) {
Utilidades.alertar(ex.getMessage());
}
}
// Permite a execucao de uma nota do video
public void tocar(float seconds, int corda) {
if (!this.canPlay) {
return;
}
corda = 6 - corda;
try {
for (MIDINote nota : this.notas) {
if (nota.getSecond() == seconds && nota.getChord() == corda) {
this.recebedor.send(nota.getShortMessage(), -1);
return;
}
}
} catch (Exception ex) {
Utilidades.alertar("Erro na execucao do MIDI: " + ex.getMessage());
}
}
public void play(int instrument, int note) {
try {
Sequencer player = MidiSystem.getSequencer();
player.open();
Sequence seq = new Sequence(Sequence.PPQ, 4);
Track track = seq.createTrack();
// MidiEvent event = null;
ShortMessage first = new ShortMessage();
first.setMessage(192, 1, instrument, 0);
MidiEvent changeInstrument = new MidiEvent(first, 1);
track.add(changeInstrument);
ShortMessage a = new ShortMessage();
a.setMessage(144, 1, note, 100);
MidiEvent noteOn = new MidiEvent(a, 1);
track.add(noteOn);
ShortMessage b = new ShortMessage();
b.setMessage(128, 1, note, 100);
MidiEvent noteOff = new MidiEvent(b, 16);
track.add(noteOff);
player.setSequence(seq);
player.start();
Thread.sleep(2000);
player.close();
System.exit(0);
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
}
} // close play
public void saveUnsaved() throws SaveAbortedException {
if (!saved) {
int option = 0;
if (loadedFile == null)
option =
JOptionPane.showConfirmDialog(
this,
new JLabel("Save changes to UNTITLED?"),
"Warning",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.WARNING_MESSAGE);
else
option =
JOptionPane.showConfirmDialog(
this,
new JLabel("Save changes to " + loadedFile.getName() + "?"),
"Warning",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.WARNING_MESSAGE);
if (option == JOptionPane.YES_OPTION) {
if (loadedFile == null) // SAVE NEW FILE
{
if (nameTF.getText().equals("")) {
JOptionPane.showMessageDialog(
this,
new JLabel("Please type in the Scale Name"),
"Warning",
JOptionPane.WARNING_MESSAGE);
throw new SaveAbortedException();
}
fileChooser.setFileFilter(filter);
int option2 = fileChooser.showSaveDialog(this);
if (option2 == JFileChooser.APPROVE_OPTION) {
File target = fileChooser.getSelectedFile();
try {
PrintStream stream = new PrintStream(new FileOutputStream(target), true);
save(stream);
stream.close();
} catch (Exception ex) {
JOptionPane.showMessageDialog(
this,
new JLabel("Error: " + ex.getMessage()),
"Error",
JOptionPane.ERROR_MESSAGE);
}
} else throw new SaveAbortedException();
;
} else // save LOADED FILE
{
try {
PrintStream stream = new PrintStream(new FileOutputStream(loadedFile), true);
save(stream);
stream.close();
} catch (Exception ex) {
JOptionPane.showMessageDialog(
this, new JLabel("Error: " + ex.getMessage()), "Error", JOptionPane.ERROR_MESSAGE);
}
}
} else if (option == JOptionPane.CANCEL_OPTION) throw new SaveAbortedException();
;
}
}
public void actionPerformed(ActionEvent e) {
JButton b = (JButton) e.getSource();
if (b.getText() == "PLAY") {
if (scoreP != null) scoreP.playScale(sp.getScale(), tempoP.getValue());
} else if (b.getText() == "New") {
try {
saveUnsaved();
} catch (SaveAbortedException ex) {
return;
}
sp.notes.removeAllElements();
sp.repaint();
nameTF.setText("");
loadedFile = null;
} else if (b.getText() == "Save") {
if (nameTF.getText().equals("")) {
JOptionPane.showMessageDialog(
this,
new JLabel("Please type in the Scale Name"),
"Warning",
JOptionPane.WARNING_MESSAGE);
return;
}
fileChooser.setFileFilter(filter);
int option = fileChooser.showSaveDialog(this);
if (option == JFileChooser.APPROVE_OPTION) {
File target = fileChooser.getSelectedFile();
if (target.getName().indexOf(".scl") == -1) target = new File(target.getPath() + ".scl");
try {
PrintStream stream = new PrintStream(new FileOutputStream(target), true);
save(stream);
stream.close();
} catch (Exception ex) {
JOptionPane.showMessageDialog(
this, new JLabel("Error: " + ex.getMessage()), "Error", JOptionPane.ERROR_MESSAGE);
}
}
} else if (b.getText() == "Load") {
try {
saveUnsaved();
} catch (SaveAbortedException ex) {
return;
}
fileChooser.setFileFilter(filter);
int option = fileChooser.showOpenDialog(this);
if (option == JFileChooser.APPROVE_OPTION) {
loadedFile = fileChooser.getSelectedFile();
SAXParserFactory factory = SAXParserFactory.newInstance();
ScaleParser handler = new ScaleParser(false);
try {
SAXParser parser = factory.newSAXParser();
parser.parse(loadedFile, handler);
// System.out.println("success");
} catch (Exception ex) {
// System.out.println("no!!!!!! exception: "+e);
// System.out.println(ex.getMessage());
ex.printStackTrace();
}
// -----now :P:P---------------
System.out.println("name: " + handler.getName());
nameTF.setText(handler.getName());
sp.notes.removeAllElements();
int[] scale = handler.getScale();
for (int i = 0; i < scale.length; i++) {
sp.addNote(scale[i]);
}
sp.repaint();
} else loadedFile = null;
}
}
