private static void set_measures(Sequence sequence, D_Staff staff)
{
// This function requires staff.num_of_beats to be set!
// TimeSignature messages are in channel 0
List <Tuple <MidiEvent, MetaMessage> > meta_messages = getMetaMessages(sequence[0]);
foreach (Tuple <MidiEvent, MetaMessage> metaPair in meta_messages)
{
MidiEvent midiEvent = metaPair.Item1;
MetaMessage metaMessage = metaPair.Item2;
byte[] meta_bytes = metaMessage.GetBytes();
// Time signature
if (metaMessage.MetaType == MetaType.TimeSignature)
{
int top_number = meta_bytes[0];
int bottom_number = (int)(Math.Pow(2, meta_bytes[1]));
int start_beat = midiEvent.AbsoluteTicks / sequence.Division;
staff.addMeasure(top_number, bottom_number, start_beat);
}
}
staff.setMeasureEndTimes();
}
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();
}