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https://github.com/jneug/zeichenmaschine.git
synced 2026-04-14 06:33:34 +02:00
Klassen Sound und Music zur Audiowiedergabe
Sound spielt kurze Clips (z.B. Soundeffekte) ab. Music für längere Hintergrundmusik. MP3s werden nur über die Einbindung der externen Abhängigkeiten jlayer, tritonus-share und mp3spi ermöglicht.
This commit is contained in:
190
src/schule/ngb/zm/Music.java
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190
src/schule/ngb/zm/Music.java
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package schule.ngb.zm;
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import schule.ngb.zm.util.ResourceStreamProvider;
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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.Level;
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import java.util.logging.Logger;
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public class Music {
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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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private boolean playing = false;
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private boolean looping = false;
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private String audioSource;
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private AudioInputStream audioStream;
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private SourceDataLine audioLine;
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private float volume = 1.0f;
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public Music( String source ) {
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this.audioSource = source;
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}
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public boolean isPlaying() {
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return playing;
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}
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public boolean isLooping() {
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if( !playing ) {
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looping = false;
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}
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return looping;
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}
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public void setVolume( double volume ) {
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this.volume = (float) volume;
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if( audioLine != null ) {
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applyVolume();
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}
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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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float vol = 20f * (float) Math.log10(volume);
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// vol = (float) Constants.limit(vol, gainControl.getMinimum(), gainControl.getMaximum());
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gainControl.setValue(vol);
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}
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public void playOnce() {
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if( openLine() ) {
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TaskRunner.run(new Runnable() {
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@Override
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public void run() {
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stream();
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}
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});
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}
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}
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public void playOnceAndWait() {
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if( openLine() ) {
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stream();
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}
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}
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public void loop() {
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looping = true;
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playOnce();
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}
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public void stop() {
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playing = false;
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looping = false;
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dispose();
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}
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public void dispose() {
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if( audioLine != null ) {
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if( audioLine.isRunning() ) {
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playing = false;
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audioLine.stop();
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}
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if( audioLine.isOpen() ) {
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audioLine.drain();
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audioLine.close();
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}
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}
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try {
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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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audioLine = null;
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audioStream = null;
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}
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private void stream() {
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audioLine.start();
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playing = true;
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byte[] bytesBuffer = new byte[BUFFER_SIZE];
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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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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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}
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// Wait for the remaining audio to play
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/*while( audioLine.isRunning() ) {
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try {
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Thread.sleep(10);
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} catch( InterruptedException ex ) {
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// Just keep waiting ...
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}
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}*/
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playing = false;
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streamingStopped();
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}
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private boolean openLine() {
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if( audioLine != null ) {
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return true;
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}
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try {
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InputStream in = ResourceStreamProvider.getResourceStream(audioSource);
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if( in != null ) {
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final AudioInputStream inStream = AudioSystem.getAudioInputStream(in);
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AudioFormat format = inStream.getFormat();
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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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DataLine.Info info = new DataLine.Info(SourceDataLine.class, outFormat);
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audioLine = (SourceDataLine) AudioSystem.getLine(info);
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audioLine.open(outFormat);
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applyVolume();
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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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}
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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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} 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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} 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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}
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return false;
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}
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private void streamingStopped() {
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playing = false;
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dispose();
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if( looping ) {
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playOnce();
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}
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}
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//private static final Logger LOGGER = Logger.getLogger("schule.ngb.zm.Music");
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private static final Logger LOGGER = Logger.getLogger(Music.class.getName());
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}
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204
src/schule/ngb/zm/Sound.java
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204
src/schule/ngb/zm/Sound.java
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@@ -0,0 +1,204 @@
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package schule.ngb.zm;
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import schule.ngb.zm.util.ResourceStreamProvider;
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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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public class Sound {
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private boolean playing = false;
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private boolean looping = false;
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private String audioSource;
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private Clip audioClip;
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private boolean disposeAfterPlay = false;
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private float volume = 1.0f;
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public Sound( String source ) {
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this.audioSource = source;
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}
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public boolean isPlaying() {
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// return audioClip != null && audioClip.isRunning();
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return playing;
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}
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public boolean isLooping() {
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if( !playing ) {
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looping = false;
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}
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return looping;
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}
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public void setVolume( double volume ) {
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this.volume = (float) volume;
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if( audioClip != null ) {
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applyVolume();
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}
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}
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private void applyVolume() {
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FloatControl gainControl =
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(FloatControl) audioClip.getControl(FloatControl.Type.MASTER_GAIN);
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float vol = 20f * (float) Math.log10(volume);
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// vol = (float) Constants.limit(vol, gainControl.getMinimum(), gainControl.getMaximum());
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gainControl.setValue(vol);
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}
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public void stop() {
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looping = false;
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if( audioClip.isRunning() ) {
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audioClip.stop();
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}
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playing = false;
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}
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public void play() {
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if( this.openClip() ) {
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audioClip.start();
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playing = true;
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}
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}
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public void playOnce() {
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disposeAfterPlay = true;
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play();
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}
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public void playOnceAndWait() {
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disposeAfterPlay = true;
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playAndWait();
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}
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public void playAndWait() {
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this.play();
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long audioLen = audioClip.getMicrosecondLength();
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while( playing ) {
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try {
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long ms = (audioLen - audioClip.getMicrosecondPosition()) / 1000L;
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Thread.sleep(ms);
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} catch( InterruptedException ex ) {
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// Ignore
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}
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}
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audioClip.close();
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}
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public void loop() {
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loop(Clip.LOOP_CONTINUOUSLY);
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}
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public void loop( int count ) {
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int loopCount = count;
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if( loopCount != Clip.LOOP_CONTINUOUSLY ) {
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if( loopCount <= 0 ) {
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return;
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}
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// Adjust Number of loops
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loopCount -= 1;
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}
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if( openClip() ) {
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looping = true;
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audioClip.loop(loopCount);
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playing = true;
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}
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}
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public void dispose() {
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if( audioClip != null ) {
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if( audioClip.isRunning() ) {
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audioClip.stop();
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}
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audioClip.close();
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audioClip = null;
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}
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}
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private boolean openClip() {
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if( audioClip != null ) {
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audioClip.setFramePosition(0);
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return true;
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}
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try {
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InputStream in = ResourceStreamProvider.getResourceStream(audioSource);
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if( in != null ) {
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AudioInputStream audioStream = AudioSystem.getAudioInputStream(in);
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AudioFormat format = audioStream.getFormat();
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DataLine.Info info = new DataLine.Info(Clip.class, format);
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audioClip = (Clip) AudioSystem.getLine(info);
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audioClip.addLineListener(new LineListener() {
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@Override
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public void update( LineEvent event ) {
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if( event.getType() == LineEvent.Type.STOP ) {
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playbackStopped();
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}
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}
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});
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audioClip.open(audioStream);
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applyVolume();
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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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}
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} catch( UnsupportedAudioFileException ex ) {
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LOGGER.warning("Sound source " + audioSource + " could not be played: The specified audio file is not supported.");
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LOGGER.throwing("Sound", "openClip", ex);
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} catch( LineUnavailableException ex ) {
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LOGGER.warning("Sound source " + audioSource + " could not be played: Audio line for playing back is unavailable.");
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LOGGER.throwing("Sound", "openClip", ex);
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} catch( IOException ex ) {
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LOGGER.warning("Sound source " + audioSource + " could not be played: Error playing the audio file.");
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LOGGER.throwing("Sound", "openClip", ex);
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}
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return false;
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}
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/*@Override
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public void update( LineEvent event ) {
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LineEvent.Type type = event.getType();
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if( type == LineEvent.Type.START ) {
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playing = true;
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} else if( type == LineEvent.Type.STOP ) {
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playing = false;
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if( disposeAfterPlay ) {
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this.dispose();
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disposeAfterPlay = false;
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}
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}
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}*/
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private void playbackStopped() {
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playing = false;
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if( disposeAfterPlay ) {
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this.dispose();
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disposeAfterPlay = false;
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}
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}
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/*
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public void addLineListener( LineListener listener ) {
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if( audioClip == null ) {
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openClip();
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}
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if( audioClip != null ) {
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audioClip.addLineListener(listener);
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}
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}
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*/
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private static final Logger LOGGER = Logger.getLogger(Sound.class.getName());
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}
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