added getCurrentMixer + test

Author: JellevanAbbema

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;
@@ -1071,6 +1074,15 @@ 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/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;
@@ -624,15 +621,29 @@ void setMixer() throws StreamPlayerException {
         List<String> mixers = player.getMixers();
 
         //Use the last mixer (this is never the default)
-        String mixer = mixers.get(mixers.size()-1);
+        String mixerName = mixers.get(mixers.size()-1);
 
         //Set the mixer
-        player.setMixerName(mixer);
+        player.setMixerName(mixerName);
 
         //Create a line, this will either use the set mixer or set the name to null
         player.open(audioFile);
 
-        assertEquals(mixer, player.getMixerName());
+        //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);
     }
 
 }