TGInputStream.java

/*
 * Created on 16-dic-2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package org.herac.tuxguitar.io.tg.v07;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.herac.tuxguitar.io.base.TGFileFormat;
import org.herac.tuxguitar.io.base.TGFileFormatException;
import org.herac.tuxguitar.io.base.TGInputStreamBase;
import org.herac.tuxguitar.song.factory.TGFactory;
import org.herac.tuxguitar.song.models.TGBeat;
import org.herac.tuxguitar.song.models.TGColor;
import org.herac.tuxguitar.song.models.TGDuration;
import org.herac.tuxguitar.song.models.TGMeasure;
import org.herac.tuxguitar.song.models.TGMeasureHeader;
import org.herac.tuxguitar.song.models.TGNote;
import org.herac.tuxguitar.song.models.TGNoteEffect;
import org.herac.tuxguitar.song.models.TGSong;
import org.herac.tuxguitar.song.models.TGString;
import org.herac.tuxguitar.song.models.TGTempo;
import org.herac.tuxguitar.song.models.TGTimeSignature;
import org.herac.tuxguitar.song.models.TGTrack;
import org.herac.tuxguitar.song.models.TGDivisionType;
import org.herac.tuxguitar.song.models.TGVoice;
import org.herac.tuxguitar.song.models.effects.TGEffectBend;

/**
 * @author julian
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class TGInputStream implements TGInputStreamBase{
	private static final String TG_VERSION = "TG_DEVEL-0.01";
	
	private DataInputStream dataInputStream;
	private TGFactory factory;
	private String version;
	
	public TGInputStream(){
		super();
	}
	
	public void init(TGFactory factory,InputStream stream) {
		this.factory = factory;
		this.dataInputStream = new DataInputStream(stream);
		this.version = null;
	}
	
	public TGFileFormat getFileFormat(){
		return new TGFileFormat("TuxGuitar","*.tg");
	}
	
	public boolean isSupportedVersion(String version){
		return (version.equals(TG_VERSION));
	}
	
	public boolean isSupportedVersion(){
		try{
			readVersion();
			return isSupportedVersion(this.version);
		}catch(Exception e){
			return false;
		}catch(Error e){
			return false;
		}
	}
	
	private void readVersion(){
		if(this.version == null){
			this.version = readString();
		}
	}
	
	public TGSong readSong()throws TGFileFormatException{
		try {
			if(this.isSupportedVersion()){
				TGSong song = this.read();
				this.dataInputStream.close();
				return song;
			}
			throw new TGFileFormatException("Unsopported Version");
		}catch (Throwable throwable) {
			throw new TGFileFormatException(throwable);
		}
	}
	
	private TGSong read(){
		TGSong song = this.factory.newSong();
		
		//leo el nombre
		song.setName(readString());
		
		//leo el artista
		song.setArtist(readString());
		
		//leo el album
		song.setAlbum(readString());
		
		//leo el autor
		song.setAuthor(readString());
		
		//leo la cantidad de pistas
		int trackCount = readInt();
		
		//leo las pistas
		for(int i = 0;i < trackCount;i++){
			song.addTrack(readTrack(song));
		}
		
		return song;
	}
	
	private TGTrack readTrack(TGSong song){
		TGTrack track = this.factory.newTrack();
		
		//leo el numero
		track.setNumber((int)readLong());
		
		//leo el nombre
		track.setName(readString());
		
		//leo el canal
		readChannel(track);
		
		//leo la cantidad de compases
		int measureCount = readInt();
		
		if(song.countMeasureHeaders() == 0){
			for(int i = 0;i < measureCount;i++){
				TGMeasureHeader header = this.factory.newHeader();
				song.addMeasureHeader(header);
			}
		}
		
		//leo los compases
		for(int i = 0;i < measureCount;i++){
			track.addMeasure(readMeasure(song.getMeasureHeader(i)));
		}
		
		//leo la cantidad de cuerdas
		int stringCount = readInt();
		
		//leo las cuerdas
		for(int i = 0;i < stringCount;i++){
			track.getStrings().add(readInstrumentString());
		}
		
		//leo el color
		readColor(track.getColor());
		
		return track;
	}
	
	private TGMeasure readMeasure(TGMeasureHeader header){
		TGMeasure measure = this.factory.newMeasure(header);
		
		//leo el number
		header.setNumber(readInt());
		
		//leo el start
		header.setStart( (TGDuration.QUARTER_TIME * readLong() / 1000) );
		
		//leo la cantidad de notas
		int noteCount = readInt();
		
		//leo las notas
		TGBeat previous = null;
		for(int i = 0;i < noteCount;i++){
			previous = readNote(measure,previous);
		}
		
		//leo la cantidad de silencios
		int silenceCount = readInt();
		
		//leo los silencios
		previous = null;
		for(int i = 0;i < silenceCount;i++){
			previous = readSilence(measure,previous);
		}
		
		//leo el time signature
		readTimeSignature(header.getTimeSignature());
		
		//leo el tempo
		readTempo(header.getTempo());
		
		//leo la clave
		measure.setClef(readInt());
		
		//leo el key signature
		measure.setKeySignature(readInt());
		
		//leo el comienzo de la repeticion
		header.setRepeatOpen(readBoolean());
		
		//leo el numero de repeticiones
		header.setRepeatClose(readInt());
		
		return measure;
		
	}
	
	private TGBeat readNote(TGMeasure measure, TGBeat previous){
		TGBeat beat = previous;
		
		//leo el valor
		int value = readInt();
		
		//leo el start
		long start = (TGDuration.QUARTER_TIME * readLong() / 1000);
		if(beat == null || beat.getStart() != start){
			beat = this.factory.newBeat();
			beat.setStart(start);
			measure.addBeat(beat);
		}
		TGVoice voice = beat.getVoice(0);
		voice.setEmpty( false );
		
		//leo la duracion
		readDuration(voice.getDuration());
		
		TGNote note = this.factory.newNote();
		
		note.setValue(value);
		
		//leo el velocity
		note.setVelocity(readInt());
		
		//leo la cuerda
		note.setString(readInt());
		
		//leo la ligadura
		note.setTiedNote(readBoolean());
		
		//leo los efectos
		readNoteEffect(note.getEffect());
		
		voice.addNote(note);
		return beat;
	}
	
	private void readChannel(TGTrack track){
		//leo el canal
		track.getChannel().setChannel(readShort());
		
		//leo el canal de efectos
		track.getChannel().setEffectChannel(readShort());
		
		//leo el instrumento
		track.getChannel().setInstrument(readShort());
		
		//leo el volumen
		track.getChannel().setVolume(readShort());
		
		//leo el balance
		track.getChannel().setBalance(readShort());
		
		//leo el chorus
		track.getChannel().setChorus(readShort());
		
		//leo el reverb
		track.getChannel().setReverb(readShort());
		
		//leo el phaser
		track.getChannel().setPhaser(readShort());
		
		//leo el tremolo
		track.getChannel().setTremolo(readShort());
		
		//leo el solo
		track.setSolo(readBoolean());
		
		//leo el mute
		track.setMute(readBoolean());
	}
	
	private TGBeat readSilence(TGMeasure measure, TGBeat previous){
		TGBeat beat = previous;
		
		//leo el start
		long start = (TGDuration.QUARTER_TIME * readLong() / 1000);
		if(beat == null || beat.getStart() != start){
			beat = this.factory.newBeat();
			beat.setStart(start);
			measure.addBeat(beat);
		}
		TGVoice voice = beat.getVoice(0);
		voice.setEmpty( false );
		
		//leo la duracion
		readDuration(voice.getDuration());
		
		return beat;
	}
	
	private TGString readInstrumentString(){
		TGString string = this.factory.newString();
		
		//leo el numero
		string.setNumber( readInt() );
		
		//leo el valor
		string.setValue(readInt());
		
		return string;
	}
	
	private void readTempo(TGTempo tempo){
		//leo el valor
		tempo.setValue(readInt());
	}
	
	private void readTimeSignature(TGTimeSignature timeSignature){
		//leo el numerador
		timeSignature.setNumerator(readInt());
		
		//leo el denominador
		readDuration(timeSignature.getDenominator());
	}
	
	private void readDuration(TGDuration duration){
		//leo el valor
		duration.setValue( readInt() );
		
		//leo el puntillo
		duration.setDotted( readBoolean() );
		
		//leo el doble puntillo
		duration.setDoubleDotted( readBoolean() );
		
		//leo el tipo de divisiones
		readDivisionType(duration.getDivision());
	}
	
	private void readDivisionType(TGDivisionType divisionType){
		//leo los enters
		divisionType.setEnters(readInt());
		
		//leo los tiempos
		divisionType.setTimes(readInt());
	}
	
	private void readNoteEffect(TGNoteEffect effect){
		//leo el vibrato
		effect.setVibrato(readBoolean());
		
		//leo el bend
		if(readBoolean()){
			effect.setBend(readBendEffect());
		}
		
		//leo la nota muerta
		effect.setDeadNote(readBoolean());
		
		//leo el slide
		effect.setSlide(readBoolean());
		
		//leo el hammer
		effect.setHammer(readBoolean());
	}
	
	private TGEffectBend readBendEffect(){
		TGEffectBend bend = this.factory.newEffectBend();
		
		//leo la cantidad de puntos
		int count = readInt();
		
		for(int i = 0;i < count;i++){
			//leo la posicion
			int position = readInt();
			
			//leo el valor
			int value = readInt();
			
			//agrego el punto
			bend.addPoint(position,((value > 0)?value / 2:value));
		}
		return bend;
	}
	
	private void readColor(TGColor color){
		//escribo el RGB
		color.setR(readInt());
		color.setG(readInt());
		color.setB(readInt());
	}
	
	private short readShort(){
		try {
			return this.dataInputStream.readShort();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return 0;
	}
	
	private int readInt(){
		try {
			return this.dataInputStream.readInt();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return 0;
	}
	
	private long readLong(){
		try {
			return this.dataInputStream.readLong();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return 0;
	}
	
	private String readString(){
		try {
			int length = this.dataInputStream.read();
			char[] chars = new char[length];
			for(int i = 0;i < chars.length; i++){
				chars[i] = this.dataInputStream.readChar();
			}
			
			return String.copyValueOf(chars);
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
		
	}
	
	private boolean readBoolean(){
		try {
			return this.dataInputStream.readBoolean();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return false;
	}
}