/**
* Reads some Beat informations
*
* @param integer $start
* @param Measure $measure
* @param Track $track
* @param Tempo $tempo
*
* @return integer $time duration time
*/
public function readBeat($start, Measure $measure, Track $track, Tempo $tempo)
{
$flags = $this->reader->readUnsignedByte();
if (($flags & 0x40) != 0) {
$this->reader->readUnsignedByte();
}
$beat = new Beat();
$voice = $beat->getVoice(0);
$duration = $this->reader->factory('GuitarProDuration')->readDuration($flags);
$effect = new NoteEffect();
if (($flags & 0x2) != 0) {
$this->reader->factory($this->getParserName() . 'Chord')->readChord($track->countStrings(), $beat);
}
if (($flags & 0x4) != 0) {
$this->reader->factory('GuitarProText')->readText($beat);
}
if (($flags & 0x8) != 0) {
$this->reader->factory($this->getParserName() . 'BeatEffects')->readBeatEffects($beat, $effect);
}
if (($flags & 0x10) != 0) {
$this->reader->factory($this->getParserName() . 'MixChange')->readMixChange($tempo);
}
$stringFlags = $this->reader->readUnsignedByte();
for ($i = 6; $i >= 0; $i--) {
if (($stringFlags & 1 << $i) != 0 && 6 - $i < $track->countStrings()) {
$string = clone $track->getString(6 - $i + 1);
$note = $this->reader->factory($this->getParserName() . 'Note')->readNote($string, $track, clone $effect);
$voice->addNote($note);
}
}
$beat->setStart($start);
$voice->setEmpty(false);
$voice->getDuration()->copyFrom($duration);
$measure->addBeat($beat);
return $duration->getTime();
}
private function writeBeat(Beat $beat, Measure $measure, $changeTempo)
{
$voice = $beat->getVoice(0);
$duration = $voice->getDuration();
$flags = 0;
if ($duration->isDotted() || $duration->isDoubleDotted()) {
$flags |= 0x1;
}
if (!$duration->getDivision()->isEqual(DivisionType::normal())) {
$flags |= 0x20;
}
if ($beat->isTextBeat()) {
$flags |= 0x4;
}
if ($changeTempo) {
$flags |= 0x10;
}
$effect = null;
if ($voice->isRestVoice()) {
$flags |= 0x40;
} else {
if ($voice->countNotes() > 0) {
$note = $voice->getNote(0);
$effect = $note->getEffect();
if ($effect->isVibrato() || $effect->isTremoloBar() || $effect->isTapping() || $effect->isSlapping() || $effect->isPopping() || $effect->isHarmonic() || $effect->isFadeIn() || $beat->getStroke()->getDirection() != Stroke::STROKE_NONE) {
$flags |= 0x8;
}
}
}
$this->writeUnsignedByte($flags);
if (($flags & 0x40) != 0) {
$this->writeUnsignedByte(2);
}
$this->writeByte($this->parseDuration($duration));
if (($flags & 0x20) != 0) {
$this->writeInt($duration->getDivision()->getEnters());
}
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;
}
}
}
}
}
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 writeMeasure(Measure $measure, $changeTempo)
{
for ($v = 0; $v < 2; $v++) {
$voices = array();
for ($m = 0; $m < $measure->countBeats(); $m++) {
$beat = $measure->getBeat($m);
if ($v < $beat->countVoices()) {
$voice = $beat->getVoice($v);
if (!$voice->isEmpty()) {
$voices[] = $voice;
}
}
}
if (count($voices) > 0) {
$this->writeInt(count($voices));
for ($i = 0; $i < count($voices); $i++) {
$voice = $voices[$i];
$this->writeBeat($voice, $voice->getBeat(), $measure, $changeTempo && $i == 0);
}
} else {
$count = $measure->getTimeSignature()->getNumerator();
$beat = new Beat();
if ($v < $beat->countVoices()) {
$voice = $beat->getVoice($v);
$voice->getDuration()->setValue($measure->getTimeSignature()->getDenominator()->getValue());
$voice->setEmpty(true);
$this->writeInt($count);
for ($i = 0; $i < $count; $i++) {
$this->writeBeat($voice, $voice->getBeat(), $measure, $changeTempo && $i == 0);
}
}
}
}
}
private function adjustStrings(Beat $beat)
{
$track = $beat->getMeasure()->getTrack();
$freeStrings = $track->getStrings();
$notesToRemove = array();
$notes = $beat->getVoice(0)->getNotes();
foreach ($notes as $note) {
$string = $this->getStringForValue($freeStrings, $note->getValue());
for ($j = 0; $j < count($freeStrings); $j++) {
$tempString = $freeStrings[$j];
if ($tempString->getNumber() == $string) {
$note->setValue($note->getValue() - $tempString->getValue());
$note->setString($tempString->getNumber());
array_splice($freeStrings, $j, 1);
break;
}
}
//Cannot have more notes on same string
if ($note->getString() < 1) {
$notesToRemove[] = $note;
}
}
// Remove notes
while (count($notesToRemove) > 0) {
$beat->getVoice(0)->removeNote($notesToRemove[0]);
array_splice($notesToRemove, 0, 1);
}
}
