private function getNextBeat(Voice $beat, $bIndex)
{
$next = null;
for ($b = $bIndex + 1; $b < $beat->getBeat()->getMeasure()->countBeats(); $b++) {
$current = $beat->getBeat()->getMeasure()->getBeat($b);
if ($current->getStart() > $beat->getBeat()->getStart() && !$current->getVoice($beat->getIndex())->isEmpty()) {
if ($next === null || $current->getStart() < $next->getBeat()->getStart()) {
$next = $current->getVoice($beat->getIndex());
}
}
}
return $next;
}
private function writeBeat(Voice $voice, Beat $beat, Measure $measure, $changeTempo)
{
$duration = $voice->getDuration();
$effect = new NoteEffect();
for ($i = 0; $i < $voice->countNotes(); $i++) {
$playedNote = $voice->getNote($i);
if ($playedNote->getEffect()->isFadeIn()) {
$effect->setFadeIn(true);
}
if ($playedNote->getEffect()->isTremoloBar()) {
$effect->setTremoloBar(clone $playedNote->getEffect()->getTremoloBar());
}
if ($playedNote->getEffect()->isTapping()) {
$effect->setTapping(true);
}
if ($playedNote->getEffect()->isSlapping()) {
$effect->setSlapping(true);
}
if ($playedNote->getEffect()->isPopping()) {
$effect->setPopping(true);
}
}
$flags = 0;
if ($duration->isDotted() || $duration->isDoubleDotted()) {
$flags |= 0x1;
}
if ($voice->getIndex() == 0 && $beat->isChordBeat()) {
$flags |= 0x2;
}
if ($voice->getIndex() == 0 && $beat->isTextBeat()) {
$flags |= 0x4;
}
if ($beat->getStroke()->getDirection() != Stroke::STROKE_NONE) {
$flags |= 0x8;
} else {
if ($effect->isTremoloBar() || $effect->isTapping() || $effect->isSlapping() || $effect->isPopping() || $effect->isFadeIn()) {
$flags |= 0x8;
}
}
if ($changeTempo) {
$flags |= 0x10;
}
if (!$duration->getDivision()->isEqual(DivisionType::normal())) {
$flags |= 0x20;
}
if ($voice->isEmpty() || $voice->isRestVoice()) {
$flags |= 0x40;
}
$this->writeUnsignedByte($flags);
if (($flags & 0x40) != 0) {
$this->writeUnsignedByte($voice->isEmpty() ? 0 : 0x2);
}
$this->writeByte($this->parseDuration($duration));
if (($flags & 0x20) != 0) {
$this->writeInt($duration->getDivision()->getEnters());
}
if (($flags & 0x2) != 0) {
$this->writeChord($beat->getChord());
}
if (($flags & 0x4) != 0) {
$this->writeText($beat->getText());
}
if (($flags & 0x8) != 0) {
$this->writeBeatEffects($beat, $effect);
}
if (($flags & 0x10) != 0) {
$this->writeMixChange($measure->getTempo());
}
$stringFlags = 0;
if (!$voice->isRestVoice()) {
for ($i = 0; $i < $voice->countNotes(); $i++) {
$playedNote = $voice->getNote($i);
$string = 7 - $playedNote->getString();
$stringFlags |= 1 << $string;
}
}
$this->writeUnsignedByte($stringFlags);
for ($i = 6; $i >= 0; $i--) {
if (($stringFlags & 1 << $i) != 0) {
for ($n = 0; $n < $voice->countNotes(); $n++) {
$playedNote = $voice->getNote($n);
if ($playedNote->getString() == 6 - $i + 1) {
$this->writeNote($playedNote);
break;
}
}
}
}
$this->skipBytes(2);
}