mirror of
https://github.com/jneug/zeichenmaschine.git
synced 2026-04-14 06:33:34 +02:00
API angepasst und Javadoc verbessert
This commit is contained in:
@@ -18,8 +18,8 @@ public interface Audio {
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* {@code isLooping() == true}, dann muss auch immer
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* {@code isPlaying() == true} gelten.
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*
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* @return {@code true}, wenn das Medium in einer Schleife
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* abgespielt wird, {@code false} sonst.
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* @return {@code true}, wenn das Medium in einer Schleife abgespielt wird,
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* {@code false} sonst.
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*/
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boolean isLooping();
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@@ -36,17 +36,28 @@ public interface Audio {
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*/
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void setVolume( double volume );
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/**
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* Gibt die aktuelle Lautstärkeeinstellung dieses Mediums zurück.
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* <p>
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* Die Lautstärke wird auf einer linearen Skale angegeben, wobei 0 kein Ton
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* und 1 volle Lautstärke bedeutet. Werte über 1 verstärken den Ton des
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* Mediums.
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*
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* @return Die Lautstärke als linear skalierter Wert.
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*/
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double getVolume();
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/**
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* Startet die Wiedergabe des Mediums und beendet die Methode. Das
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* Audio-Medium wird einmal abgespielt und stoppt dann.
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*/
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void playOnce();
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void play();
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/**
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* Startet die Wiedergabe des Mediums und blockiert das Programm, bis die
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* Wiedergabe beendet ist.
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*/
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void playOnceAndWait();
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void playAndWait();
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/**
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* Spielt das Medium in einer kontinuierlichen Schleife ab. Die Methode
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@@ -50,30 +50,53 @@ public class Mixer implements Audio {
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pAudio.setVolume(pVolumeFactor * volume);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isPlaying() {
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return audios.stream().anyMatch(aw -> aw.audio.isPlaying());
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isLooping() {
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return audios.stream().anyMatch(aw -> aw.audio.isLooping());
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setVolume( double pVolume ) {
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volume = (float) pVolume;
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audios.stream().forEach(aw -> aw.audio.setVolume(aw.volumeFactor * pVolume));
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void playOnce() {
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audios.stream().forEach(aw -> aw.audio.playOnce());
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public double getVolume() {
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return volume;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void playOnceAndWait() {
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audios.stream().forEach(aw -> aw.audio.playOnce());
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public void play() {
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audios.stream().forEach(aw -> aw.audio.play());
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void playAndWait() {
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audios.stream().forEach(aw -> aw.audio.play());
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while( audios.stream().anyMatch(aw -> aw.audio.isPlaying()) ) {
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try {
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Thread.sleep(10);
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@@ -83,16 +106,25 @@ public class Mixer implements Audio {
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void loop() {
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audios.stream().forEach(aw -> aw.audio.loop());
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void stop() {
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audios.stream().forEach(aw -> aw.audio.stop());
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void dispose() {
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if( isPlaying() ) {
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@@ -101,6 +133,18 @@ public class Mixer implements Audio {
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audios.stream().forEach(aw -> aw.audio.dispose());
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}
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/**
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* Ändert die Lautstärke aller hinzugefügten Audiomedien in der angegebenen
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* Zeit schrittweise, bis die angegebene Lautstärke erreicht ist.
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* <p>
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* Zu beachten ist, dass die Lautstärke des Mixers angepasst wird. Das
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* bedeutet, dass die Lautstärke der hinzugefügten Medien mit ihrem
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* Lautstärkefaktor multipliziert werden. Die Medien haben am Ende also
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* nicht unbedingt die Lautstärke {@code to}.
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*
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* @param to Der Zielwert für die Lautstärke.
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* @param time Die Zeit, nach der die Änderung abgeschlossen sein soll.
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*/
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public void fade( final double to, final int time ) {
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TaskRunner.run(new Runnable() {
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@Override
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@@ -108,9 +152,6 @@ public class Mixer implements Audio {
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final long start = System.currentTimeMillis();
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double t = 0.0;
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double from = volume;
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if( !isPlaying() ) {
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playOnce();
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}
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do {
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setVolume(Constants.interpolate(from, to, t));
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t = (double) (System.currentTimeMillis() - start) / (double) time;
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@@ -1,43 +1,82 @@
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package schule.ngb.zm.media;
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import schule.ngb.zm.tasks.TaskRunner;
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import schule.ngb.zm.util.Log;
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import schule.ngb.zm.util.ResourceStreamProvider;
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import schule.ngb.zm.util.Validator;
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import javax.sound.sampled.*;
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import java.io.BufferedInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* Ein Musikstück, dass im Projekt abgespielt werden soll.
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* <p>
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* Im gegensatz zu einem {@link Sound} sind Musikstücke längere Audiodateien,
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* die zum Beispiel als Hintergrundmusik ablaufen sollen. Die Musik wird daher
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* nicht komplett in den Speicher geladen, sondern direkt aus der Audioquelle
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* gestreamt und wiedergegeben.
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*/
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public class Music implements Audio {
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// size of the byte buffer used to read/write the audio stream
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private static final int BUFFER_SIZE = 4096;
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/**
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* Ob der Sound gerade abgespielt wird.
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*/
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private boolean playing = false;
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/**
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* Ob der Sound gerade in einer Schleife abgespielt wird.
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*/
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private boolean looping = false;
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/**
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* Die Quelle des Musikstücks.
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*/
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private String audioSource;
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/**
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* Der AudioStream, um die AUdiosdaten zulsen, falls dieser schon geöffnet
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* wurde. Sonst {@code null}.
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*/
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private AudioInputStream audioStream;
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/**
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* Die Line für die Ausgabe, falls diese schon geöffnet wurde. Sonst
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* {@code null}.
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*/
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private SourceDataLine audioLine;
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/**
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* Die Lautstärke der Musik.
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*/
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private float volume = 0.8f;
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/**
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* Erstellt eine Musik aus der angegebenen Datei oder Webadresse.
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*
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* @param source Ein Dateipfad oder eine Webadresse.
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* @throws NullPointerException Falls die Quelle {@code null} ist.
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*/
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public Music( String source ) {
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Validator.requireNotNull(source);
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this.audioSource = source;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isPlaying() {
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return playing;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isLooping() {
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if( !playing ) {
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@@ -46,6 +85,9 @@ public class Music implements Audio {
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return looping;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setVolume( double volume ) {
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this.volume = (float) volume;
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@@ -54,6 +96,18 @@ public class Music implements Audio {
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public double getVolume() {
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return volume;
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}
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/**
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* Interne Methode, um die gesetzte Lautstärke vor dem Abspielen
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* anzuwenden.
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*/
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private void applyVolume() {
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FloatControl gainControl =
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(FloatControl) audioLine.getControl(FloatControl.Type.MASTER_GAIN);
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@@ -63,8 +117,11 @@ public class Music implements Audio {
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gainControl.setValue(vol);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void playOnce() {
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public void play() {
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if( openLine() ) {
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TaskRunner.run(new Runnable() {
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@Override
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@@ -75,19 +132,28 @@ public class Music implements Audio {
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void playOnceAndWait() {
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public void playAndWait() {
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if( openLine() ) {
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stream();
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void loop() {
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looping = true;
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playOnce();
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play();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void stop() {
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playing = false;
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@@ -95,6 +161,9 @@ public class Music implements Audio {
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dispose();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void dispose() {
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if( audioLine != null ) {
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@@ -112,7 +181,8 @@ public class Music implements Audio {
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if( audioStream != null ) {
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audioStream.close();
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}
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} catch( IOException ex ) {}
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} catch( IOException ex ) {
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}
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audioLine = null;
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audioStream = null;
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@@ -126,15 +196,14 @@ public class Music implements Audio {
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int bytesRead = -1;
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try {
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while (playing && (bytesRead = audioStream.read(bytesBuffer)) != -1) {
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while( playing && (bytesRead = audioStream.read(bytesBuffer)) != -1 ) {
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audioLine.write(bytesBuffer, 0, bytesRead);
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}
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audioLine.drain();
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audioLine.stop();
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} catch( IOException ex ) {
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LOGGER.warning("Error while playing Music source <" + audioSource + ">");
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LOGGER.throwing("Music", "stream", ex);
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LOG.warn(ex, "Error while playing Music source <%s>", audioSource);
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}
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// Wait for the remaining audio to play
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@@ -163,7 +232,7 @@ public class Music implements Audio {
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final int ch = format.getChannels();
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final float rate = format.getSampleRate();
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AudioFormat outFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, rate, 16, ch, ch*2, rate, false);
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AudioFormat outFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, rate, 16, ch, ch * 2, rate, false);
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DataLine.Info info = new DataLine.Info(SourceDataLine.class, outFormat);
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@@ -174,14 +243,14 @@ public class Music implements Audio {
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audioStream = AudioSystem.getAudioInputStream(outFormat, inStream);
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return true;
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} else {
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LOGGER.warning("Sound source <" + audioSource + "> could not be played: No audio source found.");
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LOG.warn("Sound source <%s> could not be played: No audio source found.", audioSource);
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}
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} catch( UnsupportedAudioFileException ex ) {
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LOGGER.log(Level.WARNING, "Sound source <" + audioSource + "> could not be played: The specified audio file is not supported.", ex);
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LOG.warn(ex, "Sound source <%s> could not be played: The specified audio file is not supported.", audioSource);
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} catch( LineUnavailableException ex ) {
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LOGGER.log(Level.WARNING, "Sound source <" + audioSource + "> could not be played: Audio line for playing back is unavailable.", ex);
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LOG.warn(ex, "Sound source <%s> could not be played: Audio line for playing back is unavailable.", audioSource);
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} catch( IOException ex ) {
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LOGGER.log(Level.WARNING, "Sound source <" + audioSource + "> could not be played: Error playing the audio file.", ex);
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LOG.warn(ex, "Sound source <%s> could not be played: Error playing the audio file.", audioSource);
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}
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return false;
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}
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@@ -201,7 +270,6 @@ public class Music implements Audio {
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}
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}
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//private static final Logger LOGGER = Logger.getLogger("schule.ngb.zm.media.Music");
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private static final Logger LOGGER = Logger.getLogger(Music.class.getName());
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private static final Log LOG = Log.getLogger(Music.class);
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}
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@@ -1,35 +1,84 @@
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package schule.ngb.zm.media;
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||||
import schule.ngb.zm.util.Log;
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import schule.ngb.zm.util.ResourceStreamProvider;
|
||||
import schule.ngb.zm.util.Validator;
|
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|
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import javax.sound.sampled.*;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.logging.Logger;
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/**
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* Wiedergabe kurzer Soundclips, die mehrmals wiederverwendet werden.
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* <p>
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* In Spielen und anderen Projekten gibt es oftmals eine Reihe kurzer Sounds,
|
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* die zusammen mit bestimmten Aktionen wiedergegeben werden (zum Beispiel, wenn
|
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* die Spielfigur springt, wenn zwei Objekte kollidieren, usw.). Sounds werden
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* komplett in den Speicher geladen und können dadurch immer wieder, als
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* Schleife oder auch nur Abschnittsweise abgespielt werden.
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* <p>
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||||
* Für längre Musikstücke (beispielsweise Hintergrundmusik) bietet sich eher die
|
||||
* KLasse {@link Music} an.
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*/
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@SuppressWarnings( "unused" )
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||||
public class Sound implements Audio {
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||||
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||||
/**
|
||||
* Ob der Sound gerade abgespielt wird.
|
||||
*/
|
||||
private boolean playing = false;
|
||||
|
||||
/**
|
||||
* Ob der Sound gerade in einer Schleife abgespielt wird.
|
||||
*/
|
||||
private boolean looping = false;
|
||||
|
||||
/**
|
||||
* Die Quelle des Musikstücks.
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||||
*/
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||||
private String audioSource;
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||||
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||||
/**
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||||
* Der Clip, falls er schon geladen wurde, sonst {@code null}.
|
||||
*/
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||||
private Clip audioClip;
|
||||
|
||||
/**
|
||||
* Ob die Resourcen des Clips im Speicher nach dem nächsten Abspielen
|
||||
* freigegeben werden sollen.
|
||||
*/
|
||||
private boolean disposeAfterPlay = false;
|
||||
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||||
/**
|
||||
* Die Lautstärke des Clips.
|
||||
*/
|
||||
private float volume = 0.8f;
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||||
|
||||
/**
|
||||
* Erstellt einen Sound aus der angegebene Quelle.
|
||||
*
|
||||
* @param source Ein Dateipfad oder eine Webadresse.
|
||||
* @throws NullPointerException Falls die Quelle {@code null} ist.
|
||||
*/
|
||||
public Sound( String source ) {
|
||||
Validator.requireNotNull(source);
|
||||
this.audioSource = source;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public boolean isPlaying() {
|
||||
// return audioClip != null && audioClip.isRunning();
|
||||
return playing;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public boolean isLooping() {
|
||||
if( !playing ) {
|
||||
looping = false;
|
||||
@@ -37,6 +86,10 @@ public class Sound implements Audio {
|
||||
return looping;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void setVolume( double volume ) {
|
||||
this.volume = (float) volume;
|
||||
if( audioClip != null ) {
|
||||
@@ -44,6 +97,18 @@ public class Sound implements Audio {
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public double getVolume() {
|
||||
return volume;
|
||||
}
|
||||
|
||||
/**
|
||||
* Interne Methode, um die gesetzte Lautstärke vor dem Abspielen
|
||||
* anzuwenden.
|
||||
*/
|
||||
private void applyVolume() {
|
||||
FloatControl gainControl =
|
||||
(FloatControl) audioClip.getControl(FloatControl.Type.MASTER_GAIN);
|
||||
@@ -53,6 +118,10 @@ public class Sound implements Audio {
|
||||
gainControl.setValue(vol);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void stop() {
|
||||
looping = false;
|
||||
if( audioClip.isRunning() ) {
|
||||
@@ -61,6 +130,10 @@ public class Sound implements Audio {
|
||||
playing = false;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void play() {
|
||||
if( this.openClip() ) {
|
||||
audioClip.start();
|
||||
@@ -68,16 +141,10 @@ public class Sound implements Audio {
|
||||
}
|
||||
}
|
||||
|
||||
public void playOnce() {
|
||||
disposeAfterPlay = true;
|
||||
play();
|
||||
}
|
||||
|
||||
public void playOnceAndWait() {
|
||||
disposeAfterPlay = true;
|
||||
playAndWait();
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void playAndWait() {
|
||||
this.play();
|
||||
|
||||
@@ -94,26 +161,73 @@ public class Sound implements Audio {
|
||||
audioClip.close();
|
||||
}
|
||||
|
||||
/**
|
||||
* Spielt den Sound genau einmal ab und gibt danach alle Resourcen des Clips
|
||||
* frei.
|
||||
* <p>
|
||||
* Der Aufruf ist effektiv gleich zu
|
||||
* <pre><code>
|
||||
* clip.playAndWait();
|
||||
* clip.dispose();
|
||||
* </code></pre>
|
||||
* allerdings wird der aufrufende Thread nicht blockiert und
|
||||
* {@link #dispose()} automatisch am Ende aufgerufen.
|
||||
*/
|
||||
public void playOnce() {
|
||||
disposeAfterPlay = true;
|
||||
play();
|
||||
}
|
||||
|
||||
/**
|
||||
* Spielt den Sound genau einmal ab und gibt danach alle Resourcen des Clips
|
||||
* frei.
|
||||
* <p>
|
||||
* Der Aufruf entspricht
|
||||
* <pre><code>
|
||||
* clip.playAndWait();
|
||||
* clip.dispose();
|
||||
* </code></pre>
|
||||
*/
|
||||
public void playOnceAndWait() {
|
||||
disposeAfterPlay = true;
|
||||
playAndWait();
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void loop() {
|
||||
loop(Clip.LOOP_CONTINUOUSLY);
|
||||
}
|
||||
|
||||
/**
|
||||
* Wiederholt den Sound die angegebene Anzahl an Wiederholungen ab und stoppt
|
||||
* die Wiedergabe dann.
|
||||
* @param count Anzahl der Wiederholungen.
|
||||
*/
|
||||
public void loop( int count ) {
|
||||
int loopCount = count;
|
||||
if( loopCount != Clip.LOOP_CONTINUOUSLY ) {
|
||||
if( loopCount <= 0 ) {
|
||||
return;
|
||||
if( count > 0 ) {
|
||||
int loopCount = count;
|
||||
if( loopCount != Clip.LOOP_CONTINUOUSLY ) {
|
||||
if( loopCount <= 0 ) {
|
||||
return;
|
||||
}
|
||||
// Adjust Number of loops
|
||||
loopCount -= 1;
|
||||
}
|
||||
if( openClip() ) {
|
||||
looping = true;
|
||||
audioClip.loop(loopCount);
|
||||
playing = true;
|
||||
}
|
||||
// Adjust Number of loops
|
||||
loopCount -= 1;
|
||||
}
|
||||
if( openClip() ) {
|
||||
looping = true;
|
||||
audioClip.loop(loopCount);
|
||||
playing = true;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void dispose() {
|
||||
if( audioClip != null ) {
|
||||
if( audioClip.isRunning() ) {
|
||||
@@ -150,17 +264,14 @@ public class Sound implements Audio {
|
||||
applyVolume();
|
||||
return true;
|
||||
} else {
|
||||
LOGGER.warning("Sound source " + audioSource + " could not be played: No audio source found.");
|
||||
LOG.warn("Sound source <%s> could not be played: No audio source found.", audioSource);
|
||||
}
|
||||
} catch( UnsupportedAudioFileException ex ) {
|
||||
LOGGER.warning("Sound source " + audioSource + " could not be played: The specified audio file is not supported.");
|
||||
LOGGER.throwing("Sound", "openClip", ex);
|
||||
LOG.warn(ex, "Sound source <%s> could not be played: The specified audio file is not supported.", audioSource);
|
||||
} catch( LineUnavailableException ex ) {
|
||||
LOGGER.warning("Sound source " + audioSource + " could not be played: Audio line for playing back is unavailable.");
|
||||
LOGGER.throwing("Sound", "openClip", ex);
|
||||
LOG.warn(ex, "Sound source <%s> could not be played: Audio line for playing back is unavailable.", audioSource);
|
||||
} catch( IOException ex ) {
|
||||
LOGGER.warning("Sound source " + audioSource + " could not be played: Error playing the audio file.");
|
||||
LOGGER.throwing("Sound", "openClip", ex);
|
||||
LOG.warn(ex, "Sound source <%s> could not be played: Error playing the audio file.", audioSource);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
@@ -180,6 +291,11 @@ public class Sound implements Audio {
|
||||
}
|
||||
}*/
|
||||
|
||||
/**
|
||||
* Interne Methode, die aufgerufen wird, wenn die Wiedergabe gestoppt wird.
|
||||
* Entweder durch einen Aufruf von {@link #stop()} oder, weil die Wiedergabe
|
||||
* nach {@link #playOnce()} beendet wurde.
|
||||
*/
|
||||
private void playbackStopped() {
|
||||
playing = false;
|
||||
if( disposeAfterPlay ) {
|
||||
@@ -188,17 +304,6 @@ public class Sound implements Audio {
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
public void addLineListener( LineListener listener ) {
|
||||
if( audioClip == null ) {
|
||||
openClip();
|
||||
}
|
||||
if( audioClip != null ) {
|
||||
audioClip.addLineListener(listener);
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
private static final Logger LOGGER = Logger.getLogger(Sound.class.getName());
|
||||
private static final Log LOG = Log.getLogger(Sound.class);
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user