/** This method does a variety of calculations to get the actual value of the note. */
private void computeNoteValue(NoteContext noteContext, StaccatoParserContext parserContext) {
// Don't compute note value for a rest
if (noteContext.isRest) {
return;
}
// Adjust for Key Signature
if (parserContext.getKey() != null) {
int keySig = KeyProviderFactory.getKeyProvider().convertKeyToByte(parserContext.getKey());
if ((keySig != 0) && (!noteContext.isNatural)) {
if ((keySig <= -1) && (noteContext.noteNumber == 11)) noteContext.noteNumber = 10;
if ((keySig <= -2) && (noteContext.noteNumber == 4)) noteContext.noteNumber = 3;
if ((keySig <= -3) && (noteContext.noteNumber == 9)) noteContext.noteNumber = 8;
if ((keySig <= -4) && (noteContext.noteNumber == 2)) noteContext.noteNumber = 1;
if ((keySig <= -5) && (noteContext.noteNumber == 7)) noteContext.noteNumber = 6;
if ((keySig <= -6) && (noteContext.noteNumber == 0)) {
noteContext.noteNumber = 11;
noteContext.octaveNumber--;
}
if ((keySig <= -7) && (noteContext.noteNumber == 5)) noteContext.noteNumber = 4;
if ((keySig >= +1) && (noteContext.noteNumber == 5)) noteContext.noteNumber = 6;
if ((keySig >= +2) && (noteContext.noteNumber == 0)) noteContext.noteNumber = 1;
if ((keySig >= +3) && (noteContext.noteNumber == 7)) noteContext.noteNumber = 8;
if ((keySig >= +4) && (noteContext.noteNumber == 2)) noteContext.noteNumber = 3;
if ((keySig >= +5) && (noteContext.noteNumber == 9)) noteContext.noteNumber = 10;
if ((keySig >= +6) && (noteContext.noteNumber == 4)) noteContext.noteNumber = 5;
if ((keySig >= +7) && (noteContext.noteNumber == 11)) {
noteContext.noteNumber = 0;
noteContext.octaveNumber++;
}
logger.info(
"After adjusting for Key Signature, noteNumber="
+ noteContext.noteNumber
+ " octave="
+ noteContext.octaveNumber);
}
}
// Compute the actual note number, based on octave and note
if (!noteContext.isNumericNote) {
int intNoteNumber =
((noteContext.octaveNumber) * 12) + noteContext.noteNumber + noteContext.internalInterval;
if (intNoteNumber > 127) {
throw new ParserException(
StaccatoMessages.CALCULATED_NOTE_OUT_OF_RANGE, Integer.toString(intNoteNumber));
}
noteContext.noteNumber = (byte) intNoteNumber;
logger.info("Computed note number: " + noteContext.noteNumber);
}
}
