/**
* Reads mix change informations
*
* @param Tempo $tempo
*/
public function readMixChange(Tempo $tempo)
{
$this->reader->readByte();
//instrument
$volume = $this->reader->readByte();
$pan = $this->reader->readByte();
$chorus = $this->reader->readByte();
$reverb = $this->reader->readByte();
$phaser = $this->reader->readByte();
$tremolo = $this->reader->readByte();
$tempoValue = $this->reader->readInt();
if ($volume >= 0) {
$this->reader->readByte();
}
if ($pan >= 0) {
$this->reader->readByte();
}
if ($chorus >= 0) {
$this->reader->readByte();
}
if ($reverb >= 0) {
$this->reader->readByte();
}
if ($phaser >= 0) {
$this->reader->readByte();
}
if ($tremolo >= 0) {
$this->reader->readByte();
}
if ($tempoValue >= 0) {
$tempo->setValue($tempoValue);
$this->reader->readByte();
}
}
/**
* Loops on mesures to read
*
* @param Song $song
* @param integer $measures
* @param integer $tracks
* @param integer $tempoValue
*/
public function readMeasures(Song $song, $measures, $tracks, $tempoValue)
{
$tempo = new Tempo();
$tempo->setValue($tempoValue);
$start = Duration::QUARTER_TIME;
for ($i = 0; $i < $measures; $i++) {
$header = $song->getMeasureHeader($i);
$header->setStart($start);
for ($j = 0; $j < $tracks; $j++) {
$track = $song->getTrack($j);
$measure = new Measure($header);
$track->addMeasure($measure);
$this->reader->factory('GuitarPro3Measure')->readMeasure($measure, $track, $tempo);
}
$header->getTempo()->copyFrom($tempo);
$start += $header->getLength();
}
}
/**
* Reads mix change
*
* @param Tempo $tempo
*/
public function readMixChange(Tempo $tempo)
{
$this->reader->readByte();
$this->reader->skip(16);
$volume = $this->reader->readByte();
$pan = $this->reader->readByte();
$chorus = $this->reader->readByte();
$reverb = $this->reader->readByte();
$phaser = $this->reader->readByte();
$tremolo = $this->reader->readByte();
$this->reader->readStringByteSizeOfInteger();
$tempoValue = $this->reader->readInt();
if ($volume >= 0) {
$this->reader->readByte();
}
if ($pan >= 0) {
$this->reader->readByte();
}
if ($chorus >= 0) {
$this->reader->readByte();
}
if ($reverb >= 0) {
$this->reader->readByte();
}
if ($phaser >= 0) {
$this->reader->readByte();
}
if ($tremolo >= 0) {
$this->reader->readByte();
}
if ($tempoValue >= 0) {
$tempo->setValue($tempoValue);
$this->reader->readByte();
if ($this->reader->getVersionIndex() > 0) {
$this->reader->skip();
}
}
$this->reader->skip(2);
if ($this->reader->getVersionIndex() > 0) {
$this->reader->readStringByteSizeOfInteger();
$this->reader->readStringByteSizeOfInteger();
}
}
private function writeMeasures(Song $song, Tempo $tempo)
{
for ($i = 0; $i < $song->countMeasureHeaders(); $i++) {
$header = $song->getMeasureHeader($i);
for ($j = 0; $j < $song->countTracks(); $j++) {
$track = $song->getTrack($j);
$measure = $track->getMeasure($i);
$this->writeMeasure($measure, $header->getTempo()->getValue() != $tempo->getValue());
}
$tempo->copyFrom($header->getTempo());
}
}
private function applyStaticDuration(Tempo $tempo, $duration, $maximum)
{
$value = $tempo->getValue() * $duration / 60;
return $value < $maximum ? $value : $maximum;
}
private function parseTempo($tick, array $data)
{
if (count($data) >= 3) {
$tempo = Tempo::fromTPQ($data[2] & 0xff | ($data[1] & 0xff) << 8 | ($data[0] & 0xff) << 16);
$this->getHeader($tick)->setTempo($tempo);
}
}
private function writeMixChange(Tempo $tempo)
{
for ($i = 0; $i < 23; $i++) {
$this->writeByte(0xff);
}
$this->writeStringByteSizeOfInteger('');
$this->writeInt($tempo !== null ? $tempo->getValue() : -1);
if ($tempo !== null) {
$this->skipBytes(1);
}
$this->writeByte(0x1);
$this->writeByte(0xff);
}
private function writeMixChange(Tempo $tempo)
{
for ($i = 0; $i < 7; $i++) {
$this->writeByte(-1);
}
$this->writeInt($tempo->getValue());
$this->writeByte(0);
$this->writeUnsignedByte(1);
}