package net.pterodactylus.sonitus.data.sink;
+import static javax.sound.sampled.BooleanControl.Type.MUTE;
import static javax.sound.sampled.FloatControl.Type.VOLUME;
import java.io.IOException;
+import java.io.OutputStream;
import java.util.Arrays;
import java.util.List;
import java.util.logging.Logger;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.BooleanControl;
+import javax.sound.sampled.Control;
+import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
+import net.pterodactylus.sonitus.data.AbstractFilter;
import net.pterodactylus.sonitus.data.Controller;
+import net.pterodactylus.sonitus.data.Filter;
import net.pterodactylus.sonitus.data.Metadata;
-import net.pterodactylus.sonitus.data.Sink;
-import net.pterodactylus.sonitus.data.Source;
import net.pterodactylus.sonitus.data.controller.Fader;
import net.pterodactylus.sonitus.data.controller.Switch;
+import net.pterodactylus.sonitus.io.IntegralWriteOutputStream;
import com.google.common.base.Preconditions;
/**
- * {@link Sink} implementation that uses the JDK’s {@link AudioSystem} to play
- * all {@link Source}s.
+ * {@link Filter} implementation that uses the JDK’s {@link AudioSystem} to play
+ * all the audio signal.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class AudioSink implements Sink {
+public class AudioSink extends AbstractFilter {
/** The logger. */
private static final Logger logger = Logger.getLogger(AudioSink.class.getName());
/** The “mute” switch. */
private final Switch muteSwitch;
- /** The current metadata. */
- private Metadata metadata;
-
/** The audio output. */
private SourceDataLine sourceDataLine;
+ /** A buffered output stream to ensure correct writing to the source data line. */
+ private OutputStream sourceDataLineOutputStream = new IntegralWriteOutputStream(new OutputStream() {
+
+ @Override
+ public void write(int b) throws IOException {
+ }
+
+ @Override
+ public void write(byte[] b) throws IOException {
+ write(b, 0, b.length);
+ }
+
+ @Override
+ public void write(byte[] b, int off, int len) throws IOException {
+ if (sourceDataLine != null) {
+ sourceDataLine.write(b, off, len);
+ }
+ }
+ }, 1024);
+
/** Creates a new audio sink. */
public AudioSink() {
- super();
+ super("Audio Output");
volumeFader = new Fader("Volume") {
@Override
protected void valueSet(Double value) {
- if (sourceDataLine != null) {
- FloatControl volumeControl = (FloatControl) sourceDataLine.getControl(VOLUME);
- volumeControl.setValue((float) (value * volumeControl.getMaximum()));
+ /* search for preferred volume control. */
+ FloatControl volumeControl = getVolumeControl(sourceDataLine);
+ if (volumeControl == null) {
+ /* could not find volume control! */
+ return;
}
+
+ volumeControl.setValue((float) (value * volumeControl.getMaximum()));
}
};
muteSwitch = new Switch("Mute") {
+ /** The previous value in case we have to emulate the mute control. */
private float previousValue;
@Override
protected void valueSet(Boolean value) {
- if (sourceDataLine != null) {
- FloatControl volumeControl = (FloatControl) sourceDataLine.getControl(VOLUME);
- if (value) {
- previousValue = volumeControl.getValue();
- volumeControl.setValue(0);
- } else {
- volumeControl.setValue(previousValue);
- }
+ /* search for mute control. */
+ BooleanControl muteControl = getMuteControl(sourceDataLine);
+ if (muteControl != null) {
+ muteControl.setValue(value);
+ return;
+ }
+
+ /* could not find mute control, use volume control! */
+ FloatControl volumeControl = getVolumeControl(sourceDataLine);
+ if (volumeControl == null) {
+ /* no volume control, either? */
+ return;
+ }
+
+ if (value) {
+ previousValue = volumeControl.getValue();
+ volumeControl.setValue(0);
+ } else {
+ volumeControl.setValue(previousValue);
}
}
+
};
}
//
- // CONTROLLED METHODS
+ // FILTER METHODS
//
@Override
return Arrays.<Controller<?>>asList(volumeFader, muteSwitch);
}
- //
- // SINK METHODS
- //
-
@Override
public void open(Metadata metadata) throws IOException {
Preconditions.checkArgument(metadata.encoding().equalsIgnoreCase("PCM"), "source must be PCM-encoded");
+ super.open(metadata);
AudioFormat audioFormat = new AudioFormat(metadata.frequency(), 16, metadata.channels(), true, false);
try {
sourceDataLine = AudioSystem.getSourceDataLine(audioFormat);
sourceDataLine.open(audioFormat);
sourceDataLine.start();
+ metadataUpdated(metadata);
} catch (LineUnavailableException e) {
/* TODO */
+ sourceDataLine = null;
throw new IOException(e);
}
}
@Override
public void metadataUpdated(Metadata metadata) {
- logger.info(String.format("Now playing %s.", metadata));
+ super.metadataUpdated(metadata);
+ logger.fine(String.format("Now playing %s.", metadata));
}
@Override
- public void process(byte[] buffer) {
- sourceDataLine.write(buffer, 0, buffer.length);
+ public void process(byte[] buffer) throws IOException {
+ sourceDataLineOutputStream.write(buffer);
+ super.process(buffer);
logger.finest(String.format("AudioSink: Wrote %d Bytes.", buffer.length));
}
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Returns the {@link FloatControl.Type#VOLUME} control.
+ *
+ * @param dataLine
+ * The data line to search for the control
+ * @return The control, or {@code null} if no volume control could be found
+ */
+ private static FloatControl getVolumeControl(DataLine dataLine) {
+ return getControl(dataLine, VOLUME, FloatControl.class);
+ }
+
+ /**
+ * Returns the {@link BooleanControl.Type#MUTE} control.
+ *
+ * @param dataLine
+ * The data line to search for the control
+ * @return The control, or {@code null} if no mute control could be found
+ */
+ private static BooleanControl getMuteControl(DataLine dataLine) {
+ return getControl(dataLine, MUTE, BooleanControl.class);
+ }
+
+ /**
+ * Searches the given data line for a control of the given type and returns it.
+ * If the given data line is {@code null}, {@code null} is returned.
+ *
+ * @param dataLine
+ * The data line to search for a control
+ * @param controlType
+ * The type of the control to search
+ * @param controlClass
+ * The class of the control
+ * @param <T>
+ * The class of the control
+ * @return The control, or {@code null} if no control could be found
+ */
+ private static <T> T getControl(DataLine dataLine, Control.Type controlType, Class<T> controlClass) {
+ if (dataLine == null) {
+ return null;
+ }
+ Control[] controls = dataLine.getControls();
+ for (Control control : controls) {
+ if (control.getType().equals(controlType)) {
+ return (T) control;
+ }
+ }
+ return null;
+ }
+
}
projects / sonitus.git / blobdiff