private function parseDuration(Duration $duration)
{
$value = 0;
switch ($duration->getValue()) {
case Duration::WHOLE:
$value = -2;
break;
case Duration::HALF:
$value = -1;
break;
case Duration::QUARTER:
$value = 0;
break;
case Duration::EIGHTH:
$value = 1;
break;
case Duration::SIXTEENTH:
$value = 2;
break;
case Duration::THIRTY_SECOND:
$value = 3;
break;
case Duration::SIXTY_FOURTH:
$value = 4;
break;
}
return $value;
}
private function newDuration($value)
{
$duration = new Duration();
$duration->setValue($value);
return $duration;
}
private function joinBeats(Measure $measure)
{
$previous = null;
$finish = true;
$measureStart = $measure->getStart();
$measureEnd = $measureStart + $measure->getLength();
for ($i = 0; $i < $measure->countBeats(); $i++) {
$beat = $measure->getBeat($i);
$beatStart = $beat->getStart();
$beatLength = $beat->getVoice(0)->getDuration()->getTime();
if ($previous !== null) {
$previousStart = $previous->getStart();
$previousLength = $previous->getVoice(0)->getDuration()->getTime();
if ($beatStart >= $previousStart && $previousStart + $this->minDurationTime > $beatStart) {
// add beat notes to previous
for ($n = 0; $n < $beat->getVoice(0)->countNotes(); $n++) {
$note = $beat->getVoice(0)->getNote($n);
$previous->getVoice(0)->addNote($note);
}
// add beat chord to previous
if (!$previous->isChordBeat() && $beat->isChordBeat()) {
$previous->setChord($beat->getChord());
}
// add beat text to previous
if (!$previous->isTextBeat() && $beat->isTextBeat()) {
$previous->setText($beat->getText());
}
// set the best duration
if ($beatLength > $previousLength && $beatStart + $beatLength <= $measureEnd) {
$previous->getVoice(0)->getDuration()->copyFrom($beat->getVoice(0)->getDuration());
}
$measure->removeBeat($beat);
$finish = false;
break;
} else {
if ($previousStart < $beatStart && $previousStart + $previousLength > $beatStart) {
if ($beat->getVoice(0)->isRestVoice()) {
$measure->removeBeat($beat);
$finish = false;
break;
}
$duration = Duration::fromTime($beatStart - $previousStart);
$previous->getVoice(0)->getDuration()->copyFrom($duration);
}
}
}
if ($beatStart + $beatLength > $measureEnd) {
if ($beat->getVoice(0)->isRestVoice()) {
$measure->removeBeat($beat);
$finish = false;
break;
}
$duration = Duration::fromTime($measureEnd - $beatStart);
$beat->getVoice(0)->getDuration()->copyFrom($duration);
}
$previous = $beat;
}
if (!$finish) {
$this->joinBeats($measure);
}
}
private function makeNote($tick, $track, $channel, $value)
{
$tempNote = $this->getTempNote($track, $channel, $value, true);
if ($tempNote !== null) {
$nString = 0;
$nValue = $tempNote->getValue() + $this->settings->getTranspose();
$nVelocity = $tempNote->getVelocity();
$nStart = $tempNote->getTick();
$minDuration = new Duration();
$minDuration->setValue(Duration::SIXTY_FOURTH);
$nDuration = Duration::fromTime($tick - $tempNote->getTick(), $minDuration);
$measure = $this->getMeasure($this->getTrack($track), $tempNote->getTick());
$beat = $measure->getBeatByStart($nStart);
$beat->getVoice(0)->getDuration()->copyFrom($nDuration);
$note = new Note();
$note->setValue($nValue);
$note->setString($nString);
$note->setVelocity($nVelocity);
// Effect Bends / Vibrato
if ($tempNote->countPitchBends() > 0) {
$this->makeNoteEffect($note, $tempNote->getPitchBends());
}
$beat->getVoice(0)->addNote($note);
}
}
/**
* Reads Duration
*
* @param byte $flags unsigned bytes
* @return Duration
*/
public function readDuration($flags)
{
$duration = new Duration();
$duration->setValue(pow(2, $this->reader->readByte() + 4) / 4);
$duration->setDotted(($flags & 0x1) != 0);
if (($flags & 0x20) != 0) {
$divisionType = $this->reader->readInt();
switch ($divisionType) {
case 3:
$duration->getDivision()->setEnters(3);
$duration->getDivision()->setTimes(2);
break;
case 5:
$duration->getDivision()->setEnters(5);
$duration->getDivision()->setTimes(4);
break;
case 6:
$duration->getDivision()->setEnters(6);
$duration->getDivision()->setTimes(4);
break;
case 7:
$duration->getDivision()->setEnters(7);
$duration->getDivision()->setTimes(4);
break;
case 9:
$duration->getDivision()->setEnters(9);
$duration->getDivision()->setTimes(8);
break;
case 10:
$duration->getDivision()->setEnters(10);
$duration->getDivision()->setTimes(8);
break;
case 11:
$duration->getDivision()->setEnters(11);
$duration->getDivision()->setTimes(8);
break;
case 12:
$duration->getDivision()->setEnters(12);
$duration->getDivision()->setTimes(8);
break;
}
}
return $duration;
}