added setMixerName

src/main/java/com/goxr3plus/streamplayer/stream/StreamPlayer.java

@@ -91,9 +91,12 @@ public class StreamPlayer implements StreamPlayerInterface, Callable<Void> {
 	private final Object audioLock = new Object();
 
 	// -------------------VARIABLES---------------------
-
+	/** Name of the mixer to use */
 	private String mixerName;
 
+	/** The current mixer */
+	private Mixer mixer = null;
+
 	/** The current line buffer size. */
 	private int currentLineBufferSize = -1;
 
@@ -520,7 +523,7 @@ private void createLine() throws LineUnavailableException, StreamPlayerException
 				mixerName = getMixers().get(0);
 
 			// Continue
-			final Mixer mixer = getMixer(mixerName);
+			mixer = getMixer(mixerName);
 			if (mixer == null) {
 				outlet.setSourceDataLine((SourceDataLine) AudioSystem.getLine(lineInfo));
 				mixerName = null;
@@ -529,8 +532,6 @@ private void createLine() throws LineUnavailableException, StreamPlayerException
 				outlet.setSourceDataLine((SourceDataLine) mixer.getLine(lineInfo));
 			}
 
-			outlet.setSourceDataLine((SourceDataLine) AudioSystem.getLine(lineInfo));
-
 			// --------------------------------------------------------------------------------
 			logger.info(() -> "Line : " + outlet.getSourceDataLine());
 			logger.info(() -> "Line Info : " + outlet.getSourceDataLine().getLineInfo());
@@ -1055,6 +1056,33 @@ private Mixer getMixer(final String name) {
 		return mixer;
 	}
 
+	/**
+	 * Set the name of the mixer to use. This should be called before opening a Line.
+	 *
+	 * @param mixerName the name
+	 */
+	public void setMixerName(String mixerName) {
+		this.mixerName = mixerName;
+	}
+
+	/**
+	 * Returns the name of the mixer
+	 *
+	 * @return the name of the mixer
+	 */
+	public String getMixerName(){
+		return mixerName;
+	}
+
+	/**
+	 * Returns the mixer that is currently being used, if there is no line created this will return null
+	 *
+	 * @return The Mixer being used
+	 */
+	public Mixer getCurrentMixer(){
+		return mixer;
+	}
+
 	/**
 	 * Returns Gain value.
 	 *

src/main/java/com/goxr3plus/streamplayer/stream/StreamPlayerInterface.java

@@ -257,6 +257,13 @@ public interface StreamPlayerInterface {
      */
     void setLineBufferSize(int size);
 
+    /**
+     * Set the name of the mixer. This should be called before opening a Line.
+     *
+     * @param mixerName the name
+     */
+    void setMixerName(String mixerName);
+
     /**
      * Sets Pan value. Line should be opened before calling this method. Linear
      * scale : -1.0 ... +1.0

src/test/java/com/goxr3plus/streamplayer/stream/StreamPlayerMethodsTest.java

@@ -23,10 +23,7 @@
 import java.util.Map;
 import java.util.logging.Logger;
 
-import javax.sound.sampled.AudioFileFormat;
-import javax.sound.sampled.AudioSystem;
-import javax.sound.sampled.SourceDataLine;
-import javax.sound.sampled.UnsupportedAudioFileException;
+import javax.sound.sampled.*;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -618,5 +615,35 @@ void equalizerKey() {
         fail("Test not done");
     }
 
+    @Test
+    void setMixer() throws StreamPlayerException {
+        //Get all available mixers
+        List<String> mixers = player.getMixers();
+
+        //Use the last mixer (this is never the default)
+        String mixerName = mixers.get(mixers.size()-1);
+
+        //Set the mixer
+        player.setMixerName(mixerName);
+
+        //Create a line, this will either use the set mixer or set the name to null
+        player.open(audioFile);
+
+        //The name of the mixers should correspond
+        assertEquals(mixerName, player.getMixerName());
+
+        //Get the mixer of the used mixerName
+        Mixer mixer = null;
+        final Mixer.Info[] mixerInfos = AudioSystem.getMixerInfo();
+        for (Mixer.Info mixerInfo : mixerInfos) {
+            if (mixerInfo.getName().equals(mixerName)) {
+                mixer = AudioSystem.getMixer(mixerInfo);
+                break;
+            }
+        }
+
+        //The mixer that is being used should be the same as the one we found
+        assertEquals(player.getCurrentMixer(), mixer);
+    }
 
 }