public function readStroke(Beat $beat)
{
$strokeDown = $this->reader->readByte();
$strokeUp = $this->reader->readByte();
if ($strokeDown > 0) {
$beat->getStroke()->setDirection(Stroke::STROKE_DOWN);
$beat->getStroke()->setValue($this->toStrokeValue($strokeDown));
} else {
if ($strokeUp > 0) {
$beat->getStroke()->setDirection(Stroke::STROKE_UP);
$beat->getStroke()->setValue($this->toStrokeValue($strokeUp));
}
}
}
private function writeBeatEffects(Beat $beat, NoteEffect $noteEffect)
{
$flags = 0;
if ($noteEffect->isVibrato()) {
$flags += 0x1;
}
if ($noteEffect->isTremoloBar() || $noteEffect->isTapping() || $noteEffect->isSlapping() || $noteEffect->isPopping()) {
$flags += 0x20;
}
if ($beat->getStroke()->getDirection() != Stroke::STROKE_NONE) {
$flags |= 0x40;
}
if ($noteEffect->isHarmonic() && $noteEffect->getHarmonic()->getType() == EffectHarmonic::TYPE_NATURAL) {
$flags += 0x4;
}
if ($noteEffect->isHarmonic() && $noteEffect->getHarmonic()->getType() != EffectHarmonic::TYPE_NATURAL) {
$flags += 0x8;
}
if ($noteEffect->isFadeIn()) {
$flags += 0x10;
}
$this->writeUnsignedByte($flags);
if (($flags & 0x20) != 0) {
if ($noteEffect->isTremoloBar()) {
$this->writeUnsignedByte(0);
$this->writeInt(100);
} else {
if ($noteEffect->isTapping()) {
$this->writeUnsignedByte(1);
$this->writeInt(0);
} else {
if ($noteEffect->isSlapping()) {
$this->writeUnsignedByte(2);
$this->writeInt(0);
} else {
if ($noteEffect->isPopping()) {
$this->writeUnsignedByte(3);
$this->writeInt(0);
}
}
}
}
}
if (($flags & 0x40) != 0) {
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_DOWN ? $this->toStrokeValue($beat->getStroke()) : 0);
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_UP ? $this->toStrokeValue($beat->getStroke()) : 0);
}
}
private function getStroke(Beat $beat, Beat $previous = null, array $stroke)
{
$direction = $beat->getStroke()->getDirection();
if ($previous === null || !($direction == Stroke::STROKE_NONE && $previous->getStroke()->getDirection() == Stroke::STROKE_NONE)) {
if ($direction == Stroke::STROKE_NONE) {
for ($i = 0; $i < count($stroke); $i++) {
$stroke[$i] = 0;
}
} else {
$stringUseds = 0;
$stringCount = 0;
for ($vIndex = 0; $vIndex < $beat->countVoices(); $vIndex++) {
$voice = $beat->getVoice($vIndex);
for ($nIndex = 0; $nIndex < $voice->countNotes(); $nIndex++) {
$note = $voice->getNote($nIndex);
if (!$note->isTiedNote()) {
$stringUseds |= 0x1 << $note->getString() - 1;
$stringCount++;
}
}
}
if ($stringCount > 0) {
$strokeMove = 0;
$strokeIncrement = $beat->getStroke()->getIncrementTime($beat);
for ($i = 0; $i < count($stroke); $i++) {
$index = $direction == Stroke::STROKE_DOWN ? count($stroke) - 1 - $i : $i;
if (($stringUseds & 0x1 << $index) != 0) {
$stroke[$index] = $strokeMove;
$strokeMove += $strokeIncrement;
}
}
}
}
}
return $stroke;
}
private function writeBeatEffects(Beat $beat, NoteEffect $noteEffect)
{
$flags1 = 0;
$flags2 = 0;
if ($noteEffect->isFadeIn()) {
$flags1 |= 0x10;
}
if ($noteEffect->isTapping() || $noteEffect->isSlapping() || $noteEffect->isPopping()) {
$flags1 |= 0x20;
}
if ($noteEffect->isTremoloBar()) {
$flags2 |= 0x4;
}
if ($beat->getStroke()->getDirection() != Stroke::STROKE_NONE) {
$flags1 |= 0x40;
}
$this->writeUnsignedByte($flags1);
$this->writeUnsignedByte($flags2);
if (($flags1 & 0x20) != 0) {
if ($noteEffect->isTapping()) {
$this->writeUnsignedByte(1);
} else {
if ($noteEffect->isSlapping()) {
$this->writeUnsignedByte(2);
} else {
if ($noteEffect->isPopping()) {
$this->writeUnsignedByte(3);
}
}
}
}
if (($flags2 & 0x4) != 0) {
$this->writeTremoloBar($noteEffect->getTremoloBar());
}
if (($flags1 & 0x40) != 0) {
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_UP ? $this->toStrokeValue($beat->getStroke()) : 0);
$this->writeUnsignedByte($beat->getStroke()->getDirection() == Stroke::STROKE_DOWN ? $this->toStrokeValue($beat->getStroke()) : 0);
}
}