/**
* Transforms the Voices of the Piece into Pitches which are then subscribed according to timing
* to an internal SequencePlayer, then plays that SequencePlayer to play the Piece out loud
*
* <p>Catches SequencePlayer Errors internally to avoid them being part of the ABCMusic's
* responsibility
*
* <p>Note: because tempo must be converted to quarter notes, tempos that are not divisible by 4
* will have rounding errors that propagate into the music itself, its fairly negligible, but it
* exists.
*
* <p>Note: Assumes that 1/16 of the default note length is the shortest note that would be
* desired to play, any note shorter will play for 1/16 of a default note duration
*/
public void PlayMusic() {
try {
// Right now it converts bpm to be based on the number of 1/4 given how many L*Q notes exist
// with the quantized time being
int quartersPerMin = (getTempo() * getNoteLength()[0] * 4) / (getNoteLength()[1]);
int ticksPerQuarter = (getNoteLength()[1] * 16) / (getNoteLength()[0] * 4);
player = new SequencePlayer(quartersPerMin, ticksPerQuarter);
// Figure out what the Key means, and keep it as a map to edit notes as they are added
keySignature = getKeySignature();
// Initialize the accidentals as none, then use that as what gets edited through a meter
resetKeyAccidental();
for (Iterator<Voice> i = VoicesList.iterator(); i.hasNext(); ) {
int startTick = 0;
for (Iterator<Bars> j = i.next().BarsList.iterator(); j.hasNext(); ) {
for (Iterator<Meters> k = j.next().MetersList.iterator(); k.hasNext(); ) {
for (Iterator<NoteToken> l = k.next().getElts().iterator(); l.hasNext(); ) {
NoteToken workingNote = l.next();
if (workingNote.getType() == Tokens.Type.CHORD) {
int noteTicks = 0;
for (int m = 0; m < workingNote.getElts().length; m++) {
Pitch newNote = constructNote(workingNote.getElts()[m]);
// Length of a note in terms of quarters
double noteLength =
((double) workingNote.getElts()[m].getLength()[0]
/ (double) workingNote.getElts()[m].getLength()[1])
* ((double) (getNoteLength()[0] * 4) / ((double) getNoteLength()[1]));
// Convert the quarters to valid ticks
noteTicks = (int) (noteLength * ticksPerQuarter);
player.addNote(newNote.toMidiNote(), startTick, noteTicks);
}
startTick += noteTicks;
} else if (workingNote.getType() == Tokens.Type.REST) {
// Don't need to make rests
// Length of a note in terms of quarters
double noteLength =
((double) workingNote.getLength()[0] / (double) workingNote.getLength()[1])
* ((double) (getNoteLength()[0] * 4) / ((double) getNoteLength()[1]));
// Convert the quarters to valid ticks
// Add ticks for the rests skipping time
int noteTicks = (int) (noteLength * ticksPerQuarter);
startTick += noteTicks;
} else {
Pitch newNote = constructNote(workingNote);
// Length of a note in terms of quarters
double noteLength =
((double) workingNote.getLength()[0] / (double) workingNote.getLength()[1])
* ((double) (getNoteLength()[0] * 4) / ((double) getNoteLength()[1]));
// Convert the quarters to valid ticks
int noteTicks = (int) (noteLength * ticksPerQuarter);
player.addNote(newNote.toMidiNote(), startTick, noteTicks);
startTick += noteTicks;
}
}
// Reset Accidentals at the end of the Meter
resetKeyAccidental();
}
}
}
// Play the finished SequencePlayer with all Voice there-in
player.play();
// Catch undesirable errors
} catch (MidiUnavailableException e) {
e.printStackTrace();
} catch (InvalidMidiDataException e) {
e.printStackTrace();
}
}
// Transforms a Song in to language that can be fed to the MIDI Sequencer
public void play() throws MidiUnavailableException, InvalidMidiDataException {
// LCM calculations that ultimately give us how many ticks per beat we should have
Fraction lcmCalc = defaultNoteLength;
int lcm = 0;
for (String voiceName : this.musicForVoiceName.keySet()) {
for (Music m : this.musicForVoiceName.get(voiceName)) {
lcmCalc =
new Fraction(
1, Fraction.LCM(m.getDuration().getDenominator(), lcmCalc.getDenominator()));
}
if (lcmCalc.getDenominator() > lcm) {
lcm = lcmCalc.getDenominator();
}
}
LyricListener listener =
new LyricListener() {
public void processLyricEvent(String text) {
System.out.println(text);
}
};
// Initializes a new SequencePlayer that will make our notes audible
SequencePlayer seqPlayer = new SequencePlayer(this.beatsPerMinute, lcm, listener);
int startTick = 0;
int duration;
// Considers every Voice in our Song
for (String voiceName : this.musicForVoiceName.keySet()) {
String lyricsPrefix = "";
if (!voiceName.equals("THE_DEFAULT_VOICE")) lyricsPrefix = voiceName;
startTick = 0;
// Considers every Music element in our Voice
for (Music m : this.musicForVoiceName.get(voiceName)) {
duration =
(int)
(m.getDuration().toDouble()
* defaultNoteLength.toDouble()
/ tempoBeat.toDouble()
* lcm);
if (m instanceof Note) {
Note mNote = (Note) m;
Pitch pitch =
new Pitch(mNote.getNote().toString().charAt(0))
.transpose(mNote.getAccidental().getSemitoneOffset() + 12 * mNote.getOctave());
if (mNote.getSyllable() != null && !mNote.getSyllable().equals("")) {
seqPlayer.addLyricEvent(lyricsPrefix + mNote.getSyllable(), startTick);
}
seqPlayer.addNote(pitch.toMidiNote(), startTick, duration);
startTick += duration;
} else if (m instanceof Chord) {
Chord mChord = (Chord) m;
if (mChord.getSyllable() != null && !mChord.getSyllable().equals("")) {
seqPlayer.addLyricEvent(lyricsPrefix + mChord.getSyllable(), startTick);
}
for (Note n : mChord.getNotes()) {
Pitch pitch =
new Pitch(n.getNote().toString().charAt(0))
.transpose(n.getAccidental().getSemitoneOffset() + 12 * n.getOctave());
seqPlayer.addNote(pitch.toMidiNote(), startTick, duration);
}
startTick += duration;
} else if (m instanceof Tuplet) {
Tuplet mTuplet = (Tuplet) m;
int tupleNoteDur = duration;
tupleNoteDur = getTupleNoteDur(mTuplet.getType(), tupleNoteDur);
for (Music tupletElem : mTuplet.getNotes()) {
if (tupletElem instanceof Note) {
Pitch pitch1 = null;
Note n = (Note) tupletElem;
pitch1 =
new Pitch(n.getNote().toString().charAt(0))
.transpose(n.getAccidental().getSemitoneOffset() + 12 * n.getOctave());
if (n.getSyllable() != null && !n.getSyllable().equals("")) {
seqPlayer.addLyricEvent(lyricsPrefix + n.getSyllable(), startTick);
}
seqPlayer.addNote(pitch1.toMidiNote(), startTick, tupleNoteDur);
startTick += tupleNoteDur;
} else if (tupletElem instanceof Chord) {
Chord c = (Chord) tupletElem;
if (c.getSyllable() != null && !c.getSyllable().equals("")) {
seqPlayer.addLyricEvent(lyricsPrefix + c.getSyllable(), startTick);
}
for (Note note : c.getNotes()) {
Pitch pitch2 = null;
pitch2 =
new Pitch(note.getNote().toString().charAt(0))
.transpose(
note.getAccidental().getSemitoneOffset() + 12 * note.getOctave());
seqPlayer.addNote(pitch2.toMidiNote(), startTick, tupleNoteDur);
}
startTick += tupleNoteDur;
} else if (tupletElem instanceof Rest) {
startTick += tupleNoteDur;
} else {
throw new RuntimeException(
"You cannot build a tuple out of anything but a Note, Chord, or Rest");
}
}
} else if (m instanceof Rest) {
startTick += duration;
}
}
}
seqPlayer.play();
}