/**
  * 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;
 }