/**
* @param integer $string String on which note has started
* @param Track $track
*
* @return integer tied note value
*/
public function getTiedNoteValue($string, Track $track)
{
$measureCount = $track->countMeasures();
if ($measureCount > 0) {
for ($m = $measureCount - 1; $m >= 0; $m--) {
$measure = $track->getMeasure($m);
for ($b = $measure->countBeats() - 1; $b >= 0; $b--) {
$beat = $measure->getBeat($b);
$voice = $beat->getVoice(0);
for ($n = 0; $n < $voice->countNotes(); $n++) {
$note = $voice->getNote($n);
if ($note->getString() == $string) {
return $note->getValue();
}
}
}
}
}
return -1;
}
private function getPreviousNote(MidiSequenceHelper $sHelper, Note $note, Track $track, $mIndex, $bIndex, $breakAtRest)
{
$nextBIndex = $bIndex;
for ($m = $mIndex; $m >= 0; $m--) {
$mHelper = $sHelper->getMeasureHelper($m);
$measure = $track->getMeasure($mHelper->getIndex());
if ($this->sHeader == -1 || $this->sHeader <= $measure->getNumber()) {
$nextBIndex = $nextBIndex < 0 ? $measure->countBeats() : $nextBIndex;
for ($b = $nextBIndex - 1; $b >= 0; $b--) {
$beat = $measure->getBeat($b);
$voice = $beat->getVoice($note->getVoice()->getIndex());
if (!$voice->isEmpty()) {
$noteCount = $voice->countNotes();
for ($n = 0; $n < $noteCount; $n++) {
$current = $voice->getNote($n);
if ($current->getString() == $note->getString()) {
return new MidiNoteHelper($mHelper, $current);
}
}
if ($breakAtRest) {
return null;
}
}
}
}
$nextBIndex = -1;
}
return null;
}
private function getMeasure(Track $track, $tick)
{
$realTick = $tick >= Duration::QUARTER_TIME ? $tick : Duration::QUARTER_TIME;
$measures = $track->getMeasures();
foreach ($measures as $measure) {
if ($realTick >= $measure->getStart() && $realTick < $measure->getStart() + $measure->getLength()) {
return $measure;
}
}
$this->getHeader($realTick);
for ($i = 0; $i < count($this->headers); $i++) {
$exist = false;
$header = $this->headers[$i];
$measureCount = $track->countMeasures();
for ($j = 0; $j < $measureCount; $j++) {
$measure = $track->getMeasure($j);
if ($measure->getHeader() == $header) {
$exist = true;
}
}
if (!$exist) {
$measure = new Measure($header);
$track->addMeasure($measure);
}
}
return $this->getMeasure($track, $realTick);
}
