/**
* 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();
}
}
/**
* The terminal recursion method that compiles the list of NoteTokens that make up a given meter
* according to the ABC Grammar specifications
*
* <p>Note: Currently only enforces that a meter not have timing greater than specified in the
* ABCHeader but does not care about truncated Meters, apparently those are okay in music
*
* <p>Note: Assumes that meters can be of any length if desired, even if those lengths violate the
* M field this is due to the availability of truncated starts and ends, or switches to time mid
* music
*
* @return An ADT Meters that contains a list of all the NoteTokens that exist in the meter it
* begins from
*/
private Meters parseMeter() {
next = lexer.GetNextTokenType();
Meters currentMeter = new Meters();
// Create variables to enforce meter lengths
double noteLength;
double meterCount = 0;
double meterLength =
((double) ThePiece.getMeterSum()[0]) / ((double) ThePiece.getMeterSum()[1]);
// Until the given meter is terminated
while (next != Tokens.Type.BARLINE
&& next != Tokens.Type.REPEAT
&& next != Tokens.Type.END_OF_LINE
&& next != Tokens.Type.COMMENT
&& meterCount < meterLength) {
NoteToken nextToken = lexer.getNextNoteToken();
switch (next) {
case NOTE:
case REST:
// Construct the note or rest length and add it to the meter length
noteLength =
(((double) (nextToken.getLength()[0] * ThePiece.getNoteLength()[0]))
/ ((double) (nextToken.getLength()[1] * (double) ThePiece.getNoteLength()[1])));
meterCount += noteLength;
// As long as the meter is not overloaded, add the note or rest to the Meters List
if (meterCount <= meterLength) {
currentMeter.addElts(nextToken);
next = lexer.GetNextTokenType();
} else {
throw new IllegalArgumentException(
"Overloaded Meter with count greater than permitted");
}
next = lexer.GetNextTokenType();
break;
case TUPLET:
// Calculate the Tuplet length as a product of the type of Tuplet and its inner note
// lengths
// this is dependent on all Tuplet notes having the same length
noteLength =
(((double) (nextToken.getElts()[0].getLength()[0] * ThePiece.getNoteLength()[0]))
/ ((double)
(nextToken.getElts()[0].getLength()[1]
* (double) ThePiece.getNoteLength()[1])));
noteLength = noteLength * nextToken.getLength()[0];
meterCount += noteLength;
// Add each note in the Tuplet as long as the whole tuplet would fit in the meter
if (meterCount <= meterLength) {
for (int i = 0; i < nextToken.getElts().length; i++) {
currentMeter.addElts(
nextToken.getElts()[i].changeLength(
nextToken.getLength()[0], nextToken.getLength()[1]));
}
next = lexer.GetNextTokenType();
} else {
throw new IllegalArgumentException(
"Overloaded Meter with a tuplet, is it counted wrong?");
}
next = lexer.GetNextTokenType();
break;
case CHORD:
// A Chord is multiple notes played at once, so its length is simply the length of one of
// the elements
// This relies on the Chord having all notes of the same length
noteLength =
(((double) (nextToken.getLength()[0] * ThePiece.getNoteLength()[0]))
/ ((double) (nextToken.getLength()[1] * (double) ThePiece.getNoteLength()[1])));
meterCount += noteLength;
// If the Chord fits, add its construct to the Meters List
if (meterCount <= meterLength) {
currentMeter.addElts(nextToken);
next = lexer.GetNextTokenType();
} else {
throw new IllegalArgumentException(
"Overloaded Meter with a tuplet, is it counted wrong?");
}
next = lexer.GetNextTokenType();
break;
default:
throw new IllegalArgumentException(
"Somehow made a note token, but it was not a NOTE, TUPLET, CHORD or REST");
}
}
// To check measure lengths vs meter, apparently this no longer matters, kept for legacy
/*
System.out.println(meterCount+" vs "+meterLength);
if(meterCount != meterLength && meterCount + .000001 < meterLength){
throw new IllegalArgumentException("Got a meter with the wrong timing, bad stuff mang");
}
*/
// Return the finished meter
return currentMeter;
}