184 lines
6.5 KiB
Java
184 lines
6.5 KiB
Java
/*
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Reversound is used to get the music sheet of a piece from a music file.
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Copyright (C) 2014 Gabriel AUGENDRE
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Copyright (C) 2014 Gabriel DIENY
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Copyright (C) 2014 Arthur GAUCHER
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Copyright (C) 2014 Gabriel LEPETIT-AIMON
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package processing.processes;
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import conteneurs.*;
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import generictools.Instant;
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import processing.buffer.Storage;
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import processing.buffer.TemporalBuffer;
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import processing.properties.FloatProperty;
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import processing.properties.IntProperty;
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import java.util.ArrayList;
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/**
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* Created by Gabriel on 21/05/2014.
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* Permet de passer de la détection des contours aux evenements, donc apparition et disparition de notes */
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public class FreqEdgeToEvent extends IndexedProcess<NoteEventList> {
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IntProperty nPointRegroup;
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FloatProperty cutCoef;
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public FreqEdgeToEvent(TemporalBuffer<Spectre> input, int nPointRegroupMax, float cutCoef) {
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super("FreqEdgeToEvent", input, new TemporalBuffer<NoteEventList>(Storage.Type.ArrayList, input.getSampleRate(), Instant.fromIndex(0, input)));
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nPointRegroup = new IntProperty("nPoint regroupement", nPointRegroupMax);
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nPointRegroup.setMax(50);
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nPointRegroup.setMin(0);
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this.cutCoef = new FloatProperty("cut Coef", cutCoef);
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this.cutCoef.setMax(1);
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this.cutCoef.setMin(0);
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propertyManager().addProperty(nPointRegroup);
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propertyManager().addProperty(this.cutCoef);
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}
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@Override
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protected NoteEventList compute(Instant outputID) {
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NoteEventList listeEvent = new NoteEventList();
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int id = outputID.mapToIndex(output());
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Spectre r = maxRegroup(id);
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if(r == null)
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return new NoteEventList();
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// Si jamais ce n'est pas un spectre de notes, on le transforme pour pouvoir travailler dessus
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if(!(r.getGamme() instanceof NoteGamme)){
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r.castToGamme(NoteGamme.gamme());
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}
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ArrayList<Float> ampliEdges = r.getAmplitudes();
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Gamme frequencies = r.getGamme();
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float currentAmpli;
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for (int i = 1; i < frequencies.gammeSize(); i++) {
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currentAmpli = ampliEdges.get(i);
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//Cas d'une disparation brutale de note
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Profil profil = new Profil();
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profil.setAmplitude(Math.abs(currentAmpli), 0);
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if (currentAmpli < -200000f) {
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listeEvent.add(NoteEvent.disparitionEvent(new NoteProfiled(i, profil), -currentAmpli));
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} else if (currentAmpli > 300000f) {
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listeEvent.add(NoteEvent.apparitionEvent(new NoteProfiled(i, profil), currentAmpli));
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}
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}
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return listeEvent;
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}
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/** Supprime les maximums qui sont trop proches suivant une certaine marge de tolérance définie par cutCoeff
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* @param inputID l'indice du buffer d'entrée */
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private Spectre maxRegroup(int inputID){
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if(input().get(inputID)==null)
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return null;
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Spectre currentSpectre = ((Spectre)input().get(inputID)).copy();
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if(currentSpectre==null)
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return null;
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for(int i=0; i<=nPointRegroup.getValue(); i++){
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Spectre previousSpectre = input().get(inputID-i)!=null?(Spectre)input().get(inputID-i):new Spectre( ((Spectre)input().get(inputID)).getGamme());
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Spectre nextSpectre = input().get(inputID+i)!=null?(Spectre)input().get(inputID+i):new Spectre( ((Spectre)input().get(inputID)).getGamme());
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for (int j = 1; j < currentSpectre.getGamme().gammeSize(); j++) {
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float currentAmpli = currentSpectre.getAmplitude(j);
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float previousAmpli = (previousSpectre.getAmplitude(j)*currentAmpli)>0?Math.abs(previousSpectre.getAmplitude(j)):0;
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float nextAmpli = (nextSpectre.getAmplitude(j)*currentAmpli)>0?Math.abs(nextSpectre.getAmplitude(j)):-1;
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currentAmpli = Math.abs(currentAmpli);
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if(currentAmpli == 0)
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continue;
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if(previousAmpli>currentAmpli/cutCoef.getValue() || nextAmpli>currentAmpli/cutCoef.getValue())
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currentSpectre.setAmplitudeAt(j, 0);
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}
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}
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return currentSpectre;
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}
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/** Renvoie le rapport entre 2 float */
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private float rapport(float f1, float f2){
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return Math.min(f1,f2)/Math.max(f1,f2);
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}
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/**
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* À redéfinir: Renvoie la liste des index dépendant de l'échantillon d'index inputID.
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* @param inputID index de l'échantillon qui est utilisé par ...
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* @param inputBufferID
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* @return La liste des indexs de sortie qui utilise inputID pour leur calcul.
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*/
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@Override
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protected ArrayList<Instant> idUsedBy(int inputBufferID, int inputID) {
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if(inputID!=0)
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return new ArrayList<Instant>();
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ArrayList<Instant> r = new ArrayList<>((nPointRegroup.getValue())*2+1);
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int outputID = Instant.fromIndex(inputID, input()).mapToIndex(output());
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r.add(Instant.fromIndex(inputBufferID, input()));
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for(int k = 1; k < (nPointRegroup.getValue()); k++){
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r.add(0, Instant.fromIndex(outputID - k,output()));
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r.add(Instant.fromIndex(outputID + k, output()));
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}
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return r;
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}
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/** À redéfinir: Renvoie, pour chaque buffer d'entrée la liste des index nécessaire au calcul de l'échantillon d'index outputID.
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* @param outputID index de l'échantillon que l'on veut calculer
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* @return Un tableau de même taille que getInputs(), et qui contient les liste des échantillons de chaque buffer de getInputs() nécessaire au calcul.
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*/
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@Override
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protected ArrayList<Instant>[] idNeededFor(int outputID) {
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ArrayList<Instant>[] t = new ArrayList[1];
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ArrayList<Instant> r = new ArrayList<>((nPointRegroup.getValue())*2+1);
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t[0] = r;
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if(outputID<0)
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return t;
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int inputID = Instant.fromIndex(outputID, output()).mapToIndex(input());
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r.add(Instant.fromIndex(inputID, input()));
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for(int k = 1; k < (nPointRegroup.getValue()); k++){
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r.add(0, Instant.fromIndex(inputID - k, input()));
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r.add(Instant.fromIndex(inputID + k, input()));
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}
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return t;
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}
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/** Renvoie le type du buffer de sortie
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* @return La class des échantillones du buffer de sortie */
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@Override
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protected Class getType() {
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return NoteEventList.class;
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}
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@Override
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protected ProcessingOrder getProcessingOrder() {
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return ProcessingOrder.ASCENDING_ORDER;
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}
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}
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