/**
* Reads a mesure header
*
* @param integer $number
* @param Song $song
* @param TimeSignature $timeSignature
* @param integer $tempoValue
*
* @return MeasureHeader
*/
public function readMeasureHeader($number, Song $song, TimeSignature $timeSignature, $tempoValue = 120)
{
$flags = $this->reader->readUnsignedByte();
$header = new MeasureHeader();
$header->setNumber($number);
$header->setStart(0);
$header->getTempo()->setValue($tempoValue);
$header->setTripletFeel($this->reader->getTripletFeel());
$header->setRepeatOpen(($flags & 0x4) != 0);
if (($flags & 0x1) != 0) {
$timeSignature->setNumerator($this->reader->readByte());
}
if (($flags & 0x2) != 0) {
$timeSignature->getDenominator()->setValue($this->reader->readByte());
}
$header->getTimeSignature()->copyFrom($timeSignature);
if (($flags & 0x8) != 0) {
$header->setRepeatClose($this->reader->readByte());
}
if (($flags & 0x10) != 0) {
$header->setRepeatAlternative($this->reader->factory('GuitarPro3RepeatAlternative')->parseRepeatAlternative($song, $number));
}
if (($flags & 0x20) != 0) {
$header->setMarker($this->reader->factory('GuitarProMarker')->readMarker($number));
}
if (($flags & 0x40) != 0) {
$this->reader->setKeySignature($this->reader->factory('GuitarProKeySignature')->readKeySignature());
$this->reader->skip(1);
}
return $header;
}
/**
* Reads a mesure header
*
* @param integer $number
* @param Song $song
* @param TimeSignature $timeSignature
* @param integer $tempoValue
*
* @return MeasureHeader
*/
public function readMeasureHeader($index, TimeSignature $timeSignature, $tempoValue = 120)
{
$flags = $this->reader->readUnsignedByte();
$header = new MeasureHeader();
$header->setNumber($index + 1);
$header->setStart(0);
$header->getTempo()->setValue($tempoValue);
$header->setRepeatOpen(($flags & 0x4) != 0);
if (($flags & 0x1) != 0) {
$timeSignature->setNumerator($this->reader->readByte());
}
if (($flags & 0x2) != 0) {
$timeSignature->getDenominator()->setValue($this->reader->readByte());
}
$header->getTimeSignature()->copyFrom($timeSignature);
if (($flags & 0x8) != 0) {
$header->setRepeatClose(($this->reader->readByte() & 0xff) - 1);
}
if (($flags & 0x20) != 0) {
$header->setMarker($this->reader->factory('GuitarProMarker')->readMarker($header->getNumber()));
}
if (($flags & 0x10) != 0) {
$header->setRepeatAlternative($this->reader->readUnsignedByte());
}
if (($flags & 0x40) != 0) {
$this->reader->setKeySignature($this->reader->factory('GuitarProKeySignature')->readKeySignature());
$this->reader->skip(1);
}
if (($flags & 0x1) != 0 || ($flags & 0x2) != 0) {
$this->reader->skip(4);
}
if (($flags & 0x10) == 0) {
$this->reader->skip(1);
}
$tripletFeel = $this->reader->readByte();
if ($tripletFeel == 1) {
$header->setTripletFeel(MeasureHeader::TRIPLET_FEEL_EIGHTH);
} else {
if ($tripletFeel == 2) {
$header->setTripletFeel(MeasureHeader::TRIPLET_FEEL_SIXTEENTH);
} else {
$header->setTripletFeel(MeasureHeader::TRIPLET_FEEL_NONE);
}
}
return $header;
}
private function getHeader($tick)
{
$realTick = $tick >= Duration::QUARTER_TIME ? $tick : Duration::QUARTER_TIME;
foreach ($this->headers as $header) {
if ($realTick >= $header->getStart() && $realTick < $header->getStart() + $header->getLength()) {
return $header;
}
}
$last = $this->getLastHeader();
$header = new MeasureHeader();
$header->setNumber($last !== null ? $last->getNumber() + 1 : 1);
$header->setStart($last !== null ? $last->getStart() + $last->getLength() : Duration::QUARTER_TIME);
$header->getTempo()->setValue($last !== null ? $last->getTempo()->getValue() : 120);
if ($last !== null) {
$header->getTimeSignature()->copyFrom($last->getTimeSignature());
} else {
$header->getTimeSignature()->setNumerator(4);
$header->getTimeSignature()->getDenominator()->setValue(Duration::QUARTER);
}
$this->headers[] = $header;
if ($realTick >= $header->getStart() && $realTick < $header->getStart() + $header->getLength()) {
return $header;
}
return $this->getHeader($realTick);
}
