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GP3File.cs
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using System;
using System.Collections;
using System.Collections.Generic;
public class GP3File : GPFile
{
//Members of GPFile
/*
public string version;
public int[] versionTuple;
public string title = "";
public string subtitle = "";
public string interpret = "";
public string album = "";
public string author = "";
public string copyright = "";
public string tab_author = "";
public string instructional = "";
public List<MeasureHeader> measureHeaders = new List<MeasureHeader>();
public List<Track> tracks = new List<Track>();
public TripletFeel _tripletFeel;
public Lyrics lyrics;
public int tempo;
*/
public KeySignature key;
public MidiChannel[] channels;
public int measureCount;
public int trackCount;
public string[] notice;
public RepeatGroup _currentRepeatGroup = new RepeatGroup();
public GP3File(byte[] _data)
{
GPBase.pointer = 0;
GPBase.data = _data;
}
public void addMeasureHeader(MeasureHeader header)
{
header.song = this;
measureHeaders.Add(header);
if (header.isRepeatOpen || (header.repeatAlternatives.Count > 0 && _currentRepeatGroup.isClosed && header.repeatAlternatives[0] <= 0)) {
_currentRepeatGroup = new RepeatGroup();
}
_currentRepeatGroup.addMeasureHeader(header);
}
public void addTrack(Track track)
{
track.song = this;
tracks.Add(track);
}
public override void readSong()
{
//HEADERS
//VERSION
version = readVersion();
versionTuple = readVersionTuple();
//INFORMATION ABOUT THE PIECE
readInfo();
_tripletFeel = GPBase.readBool()[0] ? TripletFeel.eigth : TripletFeel.none;
//readLyrics();
tempo = GPBase.readInt()[0];
key = (KeySignature)(GPBase.readInt()[0] * 10); //key + 0
//GPBase.readSignedByte(); //octave
readMidiChannels();
measureCount = GPBase.readInt()[0];
trackCount = GPBase.readInt()[0];
readMeasureHeaders(measureCount);
readTracks(trackCount, channels);
readMeasures();
}
private string readVersion(){
var version = GPBase.readByteSizeString(30);
return version;
}
private int[] readVersionTuple() //bl0.12
{
var tuple = version.Substring(version.Length - 4).Split('.');
return new int[] {Convert.ToInt32(tuple[0]), Convert.ToInt32(tuple[1]) };
}
private void readMeasures()
{
/*Read measures.
Measures are written in the following order:
- measure 1/track 1
- measure 1/track 2
- ...
- measure 1/track m
- measure 2/track 1
- measure 2/track 2
- ...
- measure 2/track m
- ...
- measure n/track 1
- measure n/track 2
- ...
- measure n/track m
*/
var tempo = new Tempo(this.tempo);
var start = Duration.quarterTime;
foreach (MeasureHeader header in measureHeaders)
{
header.start = start;
foreach (Track track in tracks)
{
var measure = new Measure(track, header);
tempo = header.tempo;
track.measures.Add(measure);
readMeasure(measure);
}
header.tempo = tempo;
start += header.length();
}
}
private void readMeasure(Measure measure)
{
/*The measure is written as number of beats followed by sequence
of beats.*/
var start = measure.start();
var voice = measure.voices[0];
readVoice(start, voice);
}
private void readVoice(int start, Voice voice)
{
//TODO: The pointer is 13 bytes too early here (when reading for measure 0xa of track 0x2, beats should return 1, not 898989)
var beats = GPBase.readInt()[0];
for (int beat =0;beat < beats; beat++)
{
start += readBeat(start, voice);
}
}
private int readBeat(int start, Voice voice)
{
/* The first byte is the beat flags. It lists the data present in
the current beat:
- *0x01*: dotted notes
- *0x02*: presence of a chord diagram
- *0x04*: presence of a text
- *0x08*: presence of effects
- *0x10*: presence of a mix table change event
- *0x20*: the beat is a n-tuplet
- *0x40*: status: True if the beat is empty of if it is a rest
- *0x80*: *blank*
Flags are followed by:
- Status: :ref:`byte`. If flag at *0x40* is true, read one byte.
If value of the byte is *0x00* then beat is empty, if value is
*0x02* then the beat is rest.
- Beat duration: :ref:`byte`. See :meth:`readDuration`.
- Chord diagram. See :meth:`readChord`.
- Text. See :meth:`readText`.
- Beat effects. See :meth:`readBeatEffects`.
- Mix table change effect. See :meth:`readMixTableChange`.*/
var flags = GPBase.readByte()[0];
var beat = getBeat(voice, start);
if ((flags & 0x40) != 0)
{
beat.status = (BeatStatus)((int)GPBase.readByte()[0]);
} else
{
beat.status = BeatStatus.normal;
}
var duration = readDuration(flags);
var effect = new NoteEffect();
if ((flags & 0x02) != 0) beat.effect.chord = readChord(voice.measure.track.strings.Count);
if ((flags & 0x04) != 0) beat.text = readText();
if ((flags & 0x08) != 0) beat.effect = readBeatEffects(effect);
if ((flags & 0x10) != 0)
{
var mixTableChange = readMixTableChange(voice.measure);
beat.effect.mixTableChange = mixTableChange;
}
readNotes(voice.measure.track, beat, duration, effect);
return (!(beat.status == BeatStatus.empty)) ? duration.time() : 0;
}
private void readNotes (Track track, Beat beat, Duration duration, NoteEffect effect)
{
/* First byte lists played strings:
- *0x01*: 7th string
- *0x02*: 6th string
- *0x04*: 5th string
- *0x08*: 4th string
- *0x10*: 3th string
- *0x20*: 2th string
- *0x40*: 1th string
- *0x80*: *blank**/
var stringFlags = GPBase.readByte()[0];
foreach (var str in track.strings){
if ((stringFlags & 1 << (7-str.number)) != 0){
var note = new Note(beat);
beat.notes.Add(note);
readNote(note, str, track);
}
beat.duration = duration;
}
}
private void readNote(Note note, GuitarString guitarString, Track track)
{
/*The first byte is note flags:
- *0x01*: time-independent duration
- *0x02*: heavy accentuated note
- *0x04*: ghost note
- *0x08*: presence of note effects
- *0x10*: dynamics
- *0x20*: fret
- *0x40*: accentuated note
- *0x80*: right hand or left hand fingering
Flags are followed by:
- Note type: :ref:`byte`. Note is normal if values is 1, tied if
value is 2, dead if value is 3.
- Time-independent duration: 2 :ref:`SignedBytes <signed-byte>`.
Correspond to duration and tuplet. See :meth:`readDuration`
for reference.
- Note dynamics: :ref:`signed-byte`. See :meth:`unpackVelocity`.
- Fret number: :ref:`signed-byte`. If flag at *0x20* is set then
read fret number.
- Fingering: 2 :ref:`SignedBytes <signed-byte>`. See
:class:`guitarpro.models.Fingering`.
- Note effects. See :meth:`readNoteEffects`.*/
var flags = GPBase.readByte()[0];
note.str = guitarString.number;
note.effect.ghostNote = ((flags & 0x04) != 0);
if ((flags & 0x20) != 0) note.type = (NoteType)(GPBase.readByte()[0]);
if ((flags & 0x01) != 0)
{
note.duration = GPBase.readSignedByte()[0];
note.tuplet = GPBase.readSignedByte()[0];
}
if ((flags & 0x10) != 0)
{
var dyn = GPBase.readSignedByte()[0];
note.velocity = unpackVelocity(dyn);
}
if ((flags & 0x20) != 0)
{
int value;
var fret = GPBase.readSignedByte()[0];
if (note.type == NoteType.tie) { value = getTiedNoteValue(guitarString.number, track); }
else { value = fret; }
note.value = Math.Max(0, Math.Min(99, value));
}
if ((flags & 0x80) != 0)
{
note.effect.leftHandFinger = (Fingering)GPBase.readSignedByte()[0];
note.effect.rightHandFinger = (Fingering)GPBase.readSignedByte()[0];
}
if ((flags & 0x08) != 0)
{
note.effect = readNoteEffects(note);
if (note.effect.isHarmonic() && note.effect.harmonic is TappedHarmonic){
note.effect.harmonic.fret = note.value + 12;
}
}
}
private NoteEffect readNoteEffects(Note note)
{
/*First byte is note effects flags:
- *0x01*: bend presence
- *0x02*: hammer-on/pull-off
- *0x04*: slide
- *0x08*: let-ring
- *0x10*: grace note presence
Flags are followed by:
- Bend. See :meth:`readBend`.
- Grace note. See :meth:`readGrace`.*/
var noteEffect = note.effect;
if (noteEffect == null) noteEffect = new NoteEffect();
var flags = GPBase.readByte()[0];
noteEffect.hammer = ((flags & 0x02) != 0);
noteEffect.letRing = ((flags & 0x08) != 0);
if ((flags & 0x01) != 0) noteEffect.bend = readBend();
if ((flags & 0x10) != 0) noteEffect.grace = readGrace();
if ((flags & 0x04) != 0) noteEffect.slides = readSlides();
return noteEffect;
}
private List<SlideType> readSlides()
{
var ret_val = new List<SlideType>();
ret_val.Add(SlideType.shiftSlideTo);
return ret_val;
}
private GraceEffect readGrace()
{
/*- Fret: :ref:`signed-byte`. Number of fret.
- Dynamic: :ref:`byte`. Dynamic of a grace note, as in
:attr:`guitarpro.models.Note.velocity`.
- Transition: :ref:`byte`. See
:class:`guitarpro.models.GraceEffectTransition`.
- Duration: :ref:`byte`. Values are:
- *1*: Thirty-second note.
- *2*: Twenty-fourth note.
- *3*: Sixteenth note.*/
var grace = new GraceEffect();
grace.fret = GPBase.readSignedByte()[0];
grace.velocity = unpackVelocity(GPBase.readByte()[0]);
grace.duration = 1 << (7 - GPBase.readByte()[0]);
grace.isDead = (grace.fret == -1);
grace.isOnBeat = false;
grace.transition = (GraceEffectTransition)GPBase.readSignedByte()[0];
return grace;
}
private BendEffect readBend()
{
/*Encoded as:
-Bend type: :ref:`signed - byte`. See
:class:`guitarpro.models.BendType`.
- Bend value: :ref:`int`.
- Number of bend points: :ref:`int`.
- List of points.Each point consists of:
* Position: :ref:`int`. Shows where point is set along
*x*-axis.
* Value: :ref:`int`. Shows where point is set along *y*-axis.
* Vibrato: :ref:`bool`. */
var bendEffect = new BendEffect();
bendEffect.type = (BendType)GPBase.readSignedByte()[0];
bendEffect.value = GPBase.readInt()[0];
var pointCount = GPBase.readInt()[0];
for (int x = 0; x < pointCount; x++)
{
var position = (int)Math.Round(GPBase.readInt()[0] * BendEffect.maxPosition / (float)GPBase.bendPosition);
var value = (int)Math.Round(GPBase.readInt()[0] * BendEffect.semitoneLength / (float)GPBase.bendSemitone);
var vibrato = GPBase.readBool()[0];
bendEffect.points.Add(new BendPoint(position, value, vibrato));
}
return bendEffect;
}
private int getTiedNoteValue(int stringIndex, Track track)
{
for (int measure = track.measures.Count-1;measure >= 0; measure--)
{
for (int voice = track.measures[measure].voices.Count-1;voice >=0; voice--)
{
foreach (var beat in track.measures[measure].voices[voice].beats)
{
if (beat.status != BeatStatus.empty)
{
foreach (var note in beat.notes)
{
if (note.str == stringIndex) return note.value;
}
}
}
}
}
return -1;
}
private int unpackVelocity(sbyte dyn)
{
return (Velocities.minVelocity +
Velocities.velocityIncrement * dyn -
Velocities.velocityIncrement);
}
private int unpackVelocity(byte dyn)
{
return (Velocities.minVelocity +
Velocities.velocityIncrement * dyn -
Velocities.velocityIncrement);
}
private MixTableChange readMixTableChange(Measure measure)
{
var tableChange = new MixTableChange();
readMixTableChangeValues(tableChange, measure);
readMixTableChangeDurations(tableChange);
return tableChange;
}
private void readMixTableChangeValues(MixTableChange tableChange, Measure measure)
{
var instrument = GPBase.readSignedByte()[0];
var volume = GPBase.readSignedByte()[0];
var balance = GPBase.readSignedByte()[0];
var chorus = GPBase.readSignedByte()[0];
var reverb = GPBase.readSignedByte()[0];
var phaser = GPBase.readSignedByte()[0];
var tremolo = GPBase.readSignedByte()[0];
var tempo = GPBase.readInt()[0];
if (instrument >= 0) {
tableChange.instrument = new MixTableItem(instrument);
}
if (volume >= 0) {
tableChange.volume = new MixTableItem(volume);
}
if (balance >= 0) {
tableChange.balance = new MixTableItem(balance);
}
if (chorus >= 0) {
tableChange.chorus = new MixTableItem(chorus);
}
if (reverb >= 0) {
tableChange.reverb = new MixTableItem(reverb);
}
if (phaser >= 0) {
tableChange.phaser = new MixTableItem(phaser); }
if (tremolo >= 0) {
tableChange.tremolo = new MixTableItem(tremolo); }
if (tempo >= 0) {
tableChange.tempo = new MixTableItem(tempo);
measure.tempo().value = tempo;
}
}
private void readMixTableChangeDurations(MixTableChange tableChange)
{
if (tableChange.volume != null) tableChange.volume.duration = GPBase.readSignedByte()[0];
if (tableChange.balance != null) tableChange.balance.duration = GPBase.readSignedByte()[0];
if (tableChange.chorus != null) tableChange.chorus.duration = GPBase.readSignedByte()[0];
if (tableChange.reverb != null) tableChange.reverb.duration = GPBase.readSignedByte()[0];
if (tableChange.phaser != null) tableChange.phaser.duration = GPBase.readSignedByte()[0];
if (tableChange.tremolo != null) tableChange.tremolo.duration = GPBase.readSignedByte()[0];
if (tableChange.tempo != null)
{
tableChange.tempo.duration = GPBase.readSignedByte()[0];
tableChange.hideTempo = false;
}
}
private BeatEffect readBeatEffects(NoteEffect effect)
{
/*
* The first byte is effects flags:
- *0x01*: vibrato
- *0x02*: wide vibrato
- *0x04*: natural harmonic
- *0x08*: artificial harmonic
- *0x10*: fade in
- *0x20*: tremolo bar or slap effect
- *0x40*: beat stroke direction
- *0x80*: *blank*
- Tremolo bar or slap effect: :ref:`byte`. If it's 0 then
tremolo bar should be read (see :meth:`readTremoloBar`). Else
it's tapping and values of the byte map to:
- *1*: tap
- *2*: slap
- *3*: pop
- Beat stroke direction. See :meth:`readBeatStroke`.*/
var beatEffects = new BeatEffect();
var flags1 = GPBase.readByte()[0];
effect.vibrato = ((flags1 & 0x01) != 0) || effect.vibrato;
beatEffects.vibrato = ((flags1 & 0x02) != 0) || beatEffects.vibrato;
beatEffects.fadeIn = ((flags1 & 0x10) != 0);
if ((flags1 & 0x20) != 0)
{
var flags2 = GPBase.readByte()[0];
beatEffects.slapEffect = (SlapEffect)flags2;
if (beatEffects.slapEffect == SlapEffect.none)
{
beatEffects.tremoloBar = readTremoloBar();
} else
{
GPBase.readInt();
}
}
if ((flags1 & 0x40) != 0) beatEffects.stroke = readBeatStroke();
if ((flags1 & 0x04) != 0) effect.harmonic = new NaturalHarmonic();
if ((flags1 & 0x08) != 0) effect.harmonic = new ArtificialHarmonic();
return beatEffects;
}
private BeatStroke readBeatStroke()
{
var strokeDown = GPBase.readSignedByte()[0];
var strokeUp = GPBase.readSignedByte()[0];
if (strokeUp > 0)
{
return new BeatStroke(BeatStrokeDirection.up, toStrokeValue(strokeUp),0.0f);
} else
{
return new BeatStroke(BeatStrokeDirection.down, toStrokeValue(strokeDown),0.0f);
}
}
private int toStrokeValue(sbyte value)
{
/*Unpack stroke value.
Stroke value maps to:
- *1*: hundred twenty-eighth
- *2*: sixty-fourth
- *3*: thirty-second
- *4*: sixteenth
- *5*: eighth
- *6*: quarter*/
switch (value)
{
case 1: return Duration.hundredTwentyEigth; break;
case 2: return Duration.sixtyFourth; break;
case 3: return Duration.thirtySecond; break;
case 4: return Duration.sixteenth; break;
case 5: return Duration.eigth; break;
case 6: return Duration.quarter; break;
default: return Duration.sixtyFourth; break;
}
}
private BendEffect readTremoloBar()
{
var barEffect = new BendEffect();
barEffect.type = BendType.dip;
barEffect.value = GPBase.readInt()[0];
barEffect.points = new List<BendPoint>();
barEffect.points.Add(new BendPoint(0, 0));
barEffect.points.Add(new BendPoint((int)Math.Round(BendEffect.maxPosition / 2.0f), (int)Math.Round(-barEffect.value / (double)GPBase.bendSemitone)));
barEffect.points.Add(new BendPoint(BendEffect.maxPosition,0));
return barEffect;
}
private BeatText readText()
{
var text = new BeatText();
text.value = GPBase.readIntByteSizeString();
return text;
}
private Chord readChord(int stringCount)
{
var chord = new Chord(stringCount);
chord.newFormat = GPBase.readBool()[0];
if (!chord.newFormat)
{
readOldChord(chord);
} else
{
readNewChord(chord);
}
if ((chord.notes().Length) > 0) return chord;
return null;
}
private void readOldChord(Chord chord)
{
/*Read chord diagram encoded in GP3 format.
Chord diagram is read as follows:
- Name: :ref:`int-byte-size-string`. Name of the chord, e.g.
*Em*.
- First fret: :ref:`int`. The fret from which the chord is
displayed in chord editor.
- List of frets: 6 :ref:`Ints <int>`. Frets are listed in order:
fret on the string 1, fret on the string 2, ..., fret on the
string 6. If string is untouched then the values of fret is
*-1*.*/
chord.name = GPBase.readIntByteSizeString();
chord.firstFret = GPBase.readInt()[0];
if (chord.firstFret > 0)
{
for (int i=0; i < 6; i++)
{
var fret = GPBase.readInt()[0];
if (i < chord.strings.Length) chord.strings[i] = fret;
}
}
}
private void readNewChord(Chord chord)
{
/*Read new-style (GP4) chord diagram.
New-style chord diagram is read as follows:
- Sharp: :ref:`bool`. If true, display all semitones as sharps,
otherwise display as flats.
- Blank space, 3 :ref:`Bytes <byte>`.
- Root: :ref:`int`. Values are:
* -1 for customized chords
* 0: C
* 1: C#
* ...
- Type: :ref:`int`. Determines the chord type as followed. See
:class:`guitarpro.models.ChordType` for mapping.
- Chord extension: :ref:`int`. See
:class:`guitarpro.models.ChordExtension` for mapping.
- Bass note: :ref:`int`. Lowest note of chord as in *C/Am*.
- Tonality: :ref:`int`. See
:class:`guitarpro.models.ChordAlteration` for mapping.
- Add: :ref:`bool`. Determines if an "add" (added note) is
present in the chord.
- Name: :ref:`byte-size-string`. Max length is 22.
- Fifth alteration: :ref:`int`. Maps to
:class:`guitarpro.models.ChordAlteration`.
- Ninth alteration: :ref:`int`. Maps to
:class:`guitarpro.models.ChordAlteration`.
- Eleventh alteration: :ref:`int`. Maps to
:class:`guitarpro.models.ChordAlteration`.
- List of frets: 6 :ref:`Ints <int>`. Fret values are saved as
in default format.
- Count of barres: :ref:`int`. Maximum count is 2.
- Barre frets: 2 :ref:`Ints <int>`.
- Barre start strings: 2 :ref:`Ints <int>`.
- Barre end string: 2 :ref:`Ints <int>`.
- Omissions: 7 :ref:`Bools <bool>`. If the value is true then
note is played in chord.
- Blank space, 1 :ref:`byte`.*/
chord.sharp = GPBase.readBool()[0];
var intonation = chord.sharp ? "sharp" : "flat";
GPBase.skip(3);
chord.root = new PitchClass(GPBase.readInt()[0], -1, "", intonation);
chord.type = (ChordType)GPBase.readInt()[0];
chord.extension = (ChordExtension)GPBase.readInt()[0];
chord.bass = new PitchClass(GPBase.readInt()[0], -1, "", intonation);
chord.tonality = (ChordAlteration)GPBase.readInt()[0];
chord.add = GPBase.readBool()[0];
chord.name = GPBase.readByteSizeString(22);
chord.fifth = (ChordAlteration)GPBase.readInt()[0];
chord.ninth = (ChordAlteration)GPBase.readInt()[0];
chord.eleventh = (ChordAlteration)GPBase.readInt()[0];
chord.firstFret = GPBase.readInt()[0];
for (int i=0; i < 6; i++)
{
var fret = GPBase.readInt()[0];
if (i < chord.strings.Length) chord.strings[i] = fret;
}
chord.barres.Clear();
var barresCount = GPBase.readInt()[0];
var barreFrets = GPBase.readInt(2);
var barreStarts = GPBase.readInt(2);
var barreEnds = GPBase.readInt(2);
for (int x=0; x < Math.Min(2, barresCount); x++)
{
var barre = new Barre(barreFrets[x], barreStarts[x], barreEnds[x]);
chord.barres.Add(barre);
}
chord.omissions = GPBase.readBool(7);
GPBase.skip(1);
}
private Duration readDuration(byte flags)
{
/*Duration is composed of byte signifying duration and an integer
that maps to :class:`guitarpro.models.Tuplet`.
The byte maps to following values:
- *-2*: whole note
- *-1*: half note
- *0*: quarter note
- *1*: eighth note
- *2*: sixteenth note
- *3*: thirty-second note
If flag at *0x20* is true, the tuplet is read.*/
var duration = new Duration();
duration.value = 1 << (GPBase.readSignedByte()[0] + 2);
duration.isDotted = ((flags & 0x01) != 0);
if ((flags & 0x20) != 0)
{
var iTuplet = GPBase.readInt()[0];
switch (iTuplet)
{
case 3: duration.tuplet.enters = 3; duration.tuplet.times = 2; break;
case 5: duration.tuplet.enters = 5; duration.tuplet.times = 4; break;
case 6: duration.tuplet.enters = 6; duration.tuplet.times = 4; break;
case 7: duration.tuplet.enters = 7; duration.tuplet.times = 4; break;
case 9: duration.tuplet.enters = 9; duration.tuplet.times = 8; break;
case 10: duration.tuplet.enters = 10; duration.tuplet.times = 8; break;
case 11: duration.tuplet.enters = 11; duration.tuplet.times = 8; break;
case 12: duration.tuplet.enters = 12; duration.tuplet.times = 8; break;
}
}
return duration;
}
private Beat getBeat(Voice voice,int start)
{
for (int x=voice.beats.Count-1; x>=0; x--)
{
if (voice.beats[x].start == start) return voice.beats[x];
}
var newBeat = new Beat(voice);
newBeat.start = start;
voice.beats.Add(newBeat);
return newBeat;
}
private void readTracks(int trackCount, MidiChannel[] channels)
{
for (int i = 0; i < trackCount; i++)
{
Track track = new Track(this, i + 1, new List<GuitarString>(), new List<Measure>());
readTrack(track, channels);
this.tracks.Add(track);
}
}
private void readTrack(Track track, MidiChannel[] channels)
{
/*
* Read track.
The first byte is the track's flags. It presides the track's
attributes:
- *0x01*: drums track
- *0x02*: 12 stringed guitar track
- *0x04*: banjo track
- *0x08*: *blank*
- *0x10*: *blank*
- *0x20*: *blank*
- *0x40*: *blank*
- *0x80*: *blank*
Flags are followed by:
- Name: :ref:`byte-size-string`. A 40 characters long string
containing the track's name.
- Number of strings: :ref:`int`. An integer equal to the number
of strings of the track.
- Tuning of the strings: List of 7 :ref:`Ints <int>`. The tuning
of the strings is stored as a 7-integers table, the "Number of
strings" first integers being really used. The strings are
stored from the highest to the lowest.
- Port: :ref:`int`. The number of the MIDI port used.
- Channel. See :meth:`GP3File.readChannel`.
- Number of frets: :ref:`int`. The number of frets of the
instrument.
- Height of the capo: :ref:`int`. The number of the fret on
which a capo is set. If no capo is used, the value is 0.
- Track's color. The track's displayed color in Guitar Pro.*/
byte flags = GPBase.readByte()[0];
track.isPercussionTrack = ((flags & 0x01) != 0);
track.is12StringedGuitarTrack = ((flags & 0x02) != 0);
track.isBanjoTrack = ((flags & 0x04) != 0);
track.name = GPBase.readByteSizeString(40);
var stringCount = GPBase.readInt()[0];
for (int i = 0; i < 7; i++)
{
int iTuning = GPBase.readInt()[0];
if (stringCount > i)
{
var oString = new GuitarString(i + 1, iTuning);
track.strings.Add(oString);
}
}
track.port = GPBase.readInt()[0];
track.channel = readChannel(channels);
if (track.channel.channel == 9)
{
track.isPercussionTrack = true;
}
track.fretCount = GPBase.readInt()[0];
track.offset = GPBase.readInt()[0];
track.color = readColor();
}
private MidiChannel readChannel(MidiChannel[] channels)
{ /*Read MIDI channel.
MIDI channel in Guitar Pro is represented by two integers. First
is zero-based number of channel, second is zero-based number of
channel used for effects.*/
var index = GPBase.readInt()[0] - 1;
MidiChannel trackChannel = new MidiChannel();
var effectChannel = GPBase.readInt()[0] - 1;
if (0 <= index && index < channels.Length)
{
trackChannel = channels[index];
if (trackChannel.instrument < 0)
{
trackChannel.instrument = 0;
}
if (!trackChannel.isPercussionChannel())
{
trackChannel.effectChannel = effectChannel;
}
}
return trackChannel;
}
private void readMeasureHeaders(int measureCount)
{
/*Read measure headers.
The *measures* are written one after another, their number have
been specified previously.
:param measureCount: number of measures to expect.*/
MeasureHeader previous = null;
for (int number=1;number < measureCount + 1; number++)
{
var header = readMeasureHeader(number, previous);
this.addMeasureHeader(header);
previous = header;
}
}
private MeasureHeader readMeasureHeader(int number, MeasureHeader previous = null)
{
/*Read measure header.
The first byte is the measure's flags. It lists the data given in the
current measure.
- *0x01*: numerator of the key signature
- *0x02*: denominator of the key signature
- *0x04*: beginning of repeat
- *0x08*: end of repeat
- *0x10*: number of alternate ending
- *0x20*: presence of a marker
- *0x40*: tonality of the measure
- *0x80*: presence of a double bar
Each of these elements is present only if the corresponding bit
is a 1.
The different elements are written (if they are present) from
lowest to highest bit.
Exceptions are made for the double bar and the beginning of
repeat whose sole presence is enough, complementary data is not
necessary.
- Numerator of the key signature: :ref:`byte`.
- Denominator of the key signature: :ref:`byte`.
- End of repeat: :ref:`byte`.
Number of repeats until the previous beginning of repeat.
- Number of alternate ending: :ref:`byte`.
- Marker: see :meth:`GP3File.readMarker`.
- Tonality of the measure: 2 :ref:`Bytes <byte>`. These values
encode a key signature change on the current piece. First byte
is key signature root, second is key signature type.
*/
byte flags = GPBase.readByte()[0];
MeasureHeader header = new MeasureHeader();
header.number = number;
header.start = 0;
header.tempo.value = tempo;
header.tripletFeel = _tripletFeel;
if ((flags & 0x01) != 0)
{
header.timeSignature.numerator = GPBase.readSignedByte()[0];
} else
{
header.timeSignature.numerator = previous.timeSignature.numerator;
}
if ((flags & 0x02) != 0)
{
header.timeSignature.denominator.value = GPBase.readSignedByte()[0];
} else
{
header.timeSignature.denominator.value = previous.timeSignature.denominator.value;
}
header.isRepeatOpen = (bool)((flags & 0x04) != 0);
if ((flags & 0x08) != 0)
{
header.repeatClose = GPBase.readSignedByte()[0];
}
if ((flags & 0x10) != 0)
{
header.repeatAlternatives.Add(readRepeatAlternative(measureHeaders));
}
if ((flags & 0x20) != 0)
{
header.marker = readMarker(header);
}
if ((flags & 0x40) != 0)
{
sbyte root = GPBase.readSignedByte()[0];
sbyte type_ = GPBase.readSignedByte()[0];
int dir = (root < 0) ? -1 : 1;
header.keySignature = (KeySignature)((int)root*10+dir*type_);
} else if (header.number > 1)
{
header.keySignature = previous.keySignature;
}
header.hasDoubleBar = ((flags&0x80)!=0);
return header;
}
private int readRepeatAlternative(List<MeasureHeader> measureHeaders)
{
byte value = GPBase.readByte()[0];
int existingAlternatives = 0;
for (int x = measureHeaders.Count - 1; x >= 0; x--)
{
if (measureHeaders[x].isRepeatOpen) break;
existingAlternatives |= measureHeaders[x].repeatAlternatives[0];
}
return (1 << value) - 1 ^ existingAlternatives;
}
private Marker readMarker(MeasureHeader header)
{