private static List <D_Note> get_notes_from_track(Track track, D_Staff staff, int ticks_per_beat)
{
List <D_Note> notes = new List <D_Note>();
MidiEvent previous_midi_event = null;
List <Tuple <MidiEvent, ChannelMessage> > channel_messages = getChannelMessages(track);
foreach (Tuple <MidiEvent, ChannelMessage> channel_pair in channel_messages)
{
MidiEvent midiEvent = channel_pair.Item1;
ChannelMessage channelMessage = channel_pair.Item2;
if (previous_midi_event != null)
{
D_Note note = get_note(midiEvent, channelMessage, previous_midi_event, ticks_per_beat);
if (note != null)
{
notes.Add(get_note(midiEvent, channelMessage, previous_midi_event, ticks_per_beat));
}
}
previous_midi_event = midiEvent;
}
return(notes);
}
public static D_Note noteFromToken(String token, int current_scope_octave, D_Note previous_note)
{
NoteLevel noteLevel = noteLevelDictionary[token[0]];
int length_in_sixteenths = 16 / StringUtil.getNumberFromString(token);
if (token.Contains('.'))
{
length_in_sixteenths = (int)((double)length_in_sixteenths * 1.5);
}
if (noteLevel == NoteLevel.rest)
{
return(D_NoteFactory.create_rest(length_in_sixteenths));
}
else
{
NoteAlteration alteration = getNoteNoteAlteration(token);
int octave = getNoteOctave(token, current_scope_octave);
D_Note new_note = D_NoteFactory.create_note(noteLevel, alteration, octave, length_in_sixteenths);
if (previous_note != null)
{
setRelativeOctave(new_note, previous_note);
}
return(new_note);
}
}
private void set_measures(D_Staff staff, List <string> tokens)
{
// This function requires staff.num_of_beats to be set
int current_token_index = 0;
int token_end_index = tokens.Count - 1;
double current_beat = 0;
while (current_token_index <= token_end_index)
{
string current_token = tokens[current_token_index];
// Special case, when we encounter \relative, skip a token
if (current_token == "\\relative")
{
current_token_index++;
}
else if (isNote(current_token))
{
// We don't care about octaves here so we pass 0 and no previous note
// All we care about is note length so that we may increase current_beat
D_Note note = LilypondNoteParser.noteFromToken(current_token, 0, null);
current_beat += ((double)note.length / (double)4);
}
else if (current_token == "\\time")
{
string time_signature = tokens[current_token_index + 1];
Tuple <int, int> time_signature_tuple = StringUtil.getMeasureFromString(time_signature);
staff.addMeasure(time_signature_tuple.Item1, time_signature_tuple.Item2, (int)current_beat);
}
current_token_index++;
}
staff.setMeasureEndTimes();
}
public D_Note(D_Note other, int new_length)
{
this.level = other.level;
this.length = new_length;
this.octave = other.octave;
this.alteration = other.alteration;
this.is_rest = other.is_rest;
this.length_modifier = has_length_modifier(this.length);
}
static public MusicalSymbol fromNote(D_Note note)
{
if (!note.is_rest)
{
return(getNoteMusicalSymbol(note));
}
else
{
return(getRestMusicalSymbol(note));
}
}
public static Tuple <D_Note, D_Note> splitNote(D_Note note_to_split, int first_note_length)
{
int second_note_length = note_to_split.length - first_note_length;
D_Note first = D_NoteFactory.create_note(note_to_split, first_note_length);
first.note_tie = NoteTie.start;
D_Note second = D_NoteFactory.create_note(note_to_split, second_note_length);
second.note_tie = NoteTie.stop;
return(new Tuple <D_Note, D_Note>(first, second));
}
public static bool newNoteOctaveChange(D_Note start, int step)
{
int i_old = noteLevelInt[start.level];
if (step < 0 && i_old + step < min_index)
{
return(true);
}
else if (step > 0 && i_old + step > max_index)
{
return(true);
}
return(false);
}
private static void setRelativeOctave(D_Note new_note, D_Note old_note)
{
int step = LilypondUtil.getClosestNotePositionInSteps(old_note, new_note);
if (LilypondUtil.newNoteOctaveChange(old_note, step))
{
if (step < 0)
{
new_note.octave--;
}
else if (step > 0)
{
new_note.octave++;
}
}
}
private List <D_Note> get_notes(List <string> tokens, int current_scope_octave)
{
// This does not take into account repeats
int current_token_index = 0;
int token_end_index = tokens.Count - 1;
List <D_Note> notes = new List <D_Note>();
D_Note previous_note = null;
while (current_token_index <= token_end_index)
{
string current_token = tokens[current_token_index];
// Special case, when we encounter \relative, skip a token
if (current_token == "\\relative")
{
current_token_index++;
}
else if (isNote(current_token))
{
D_Note note = LilypondNoteParser.noteFromToken(current_token, current_scope_octave, previous_note);
if (!note.is_rest)
{
current_scope_octave = note.octave;
}
if (current_token_index + 1 <= token_end_index && tokens[current_token_index + 1] == "~")
{
note.note_tie = NoteTie.start;
}
else if (current_token_index > 1 && tokens[current_token_index - 2] == "~")
{
note.note_tie = NoteTie.stop;
}
notes.Add(note);
if (!note.is_rest)
{
previous_note = note;
}
}
current_token_index++;
}
return(notes);
}
// This returns a overflowed note if present
public D_Note addNote(D_Note note)
{
int overflow = note.length - this.spaceLeft();
if (overflow > 0)
{
// split
Tuple <D_Note, D_Note> split_result = D_Note.splitNote(note, this.spaceLeft());
this.notes.Add(split_result.Item1);
return(split_result.Item2);
}
else
{
this.notes.Add(note);
return(null);
}
}
static private MusicalSymbol getNoteMusicalSymbol(D_Note note)
{
String note_level = getNoteLevel(note.level);
int note_alteration = getNoteAlteration(note.alteration);
int octave = note.octave;
int numberOfDots = getNumberOfDots(note.length_modifier);
MusicalSymbolDuration duration = getNoteDuration(getVisualLength(note.length, note.length_modifier));
NoteStemDirection direction = getStemDirection(note.octave);
NoteTieType note_tie = getNoteTie(note.note_tie);
List <NoteBeamType> note_beams = new List <NoteBeamType>()
{
NoteBeamType.Single
};
return(new Note(note_level, note_alteration, octave, duration, direction, note_tie, note_beams)
{
NumberOfDots = numberOfDots
});
}
public static int getClosestNotePositionInSteps(D_Note start, D_Note goal)
{
int step;
int i_old = noteLevelInt[start.level];
int i_new = noteLevelInt[goal.level];
if (i_old > i_new)
{
step = max_index - i_old + i_new;
}
else
{
step = i_new - i_old;
}
if (step > 3)
{
step = step - max_index;
}
return(step);
}
public void fillBarsWithNotes(List <D_Note> notes)
{
// Warning: this does not take notes into account that span multiple bars
int current_bar_index = 0;
foreach (D_Note note in notes)
{
D_Note to_append = this.bars[current_bar_index].addNote(note);
if (to_append != null)
{
// overflow!
current_bar_index++;
D_Note please_dont_return = this.bars[current_bar_index].addNote(to_append);
if (please_dont_return != null)
{
throw new Exception("Somehow there's a note that's longer than an entire bar. wot de fok");
}
}
if (this.bars[current_bar_index].isFull())
{
current_bar_index++;
}
}
if (!this.bars[this.bars.Count - 2].isFull())
{
throw new Exception("Second last bar is not full, something probablt went wrong here.");
}
if (!this.bars[this.bars.Count - 1].isFull())
{
// fill with rests
int to_fill = this.bars[current_bar_index].spaceLeft();
this.bars[current_bar_index].addNote(D_NoteFactory.create_rest(to_fill));
}
}
public void removeNote(D_Note note)
{
this.notes.Remove(note);
}
static private MusicalSymbol getRestMusicalSymbol(D_Note note)
{
MusicalSymbolDuration duration = getNoteDuration(note.length);
return(new Rest(duration));
}
public static D_Note create_note(D_Note other, int new_length)
{
return(new D_Note(other, new_length));
}