dynamically increase the buffer size if we build up to large of a queue

src/com/limelight/binding/audio/JavaxAudioRenderer.java

@@ -14,7 +14,10 @@ public class JavaxAudioRenderer implements AudioRenderer {
 	private SourceDataLine soundLine;
 	private SoundBuffer soundBuffer;
 	private byte[] lineBuffer;
+	private int channelCount;
+	private int sampleRate;
 	
+	public static final int DEFAULT_BUFFER_SIZE = 4096;
 	public static final int STAGING_BUFFERS = 3; // 3 complete frames of audio
 	
 	@Override
@@ -26,6 +29,18 @@ public class JavaxAudioRenderer implements AudioRenderer {
 			// If there's space available in the sound line, pull some data out
 			// of the staging buffer and write it to the sound line
 			int available = soundLine.available();
+			
+			// Kinda jank. If the queued is larger than available, we are going to have a delay
+			// so we increase the buffer size
+			if (available < soundBuffer.size()) {
+				System.out.println("buffer too full, buffer size: " + soundLine.getBufferSize());
+				int currentBuffer = soundLine.getBufferSize();
+				soundLine.close();
+				createSoundLine(currentBuffer*2);
+				available = soundLine.available();
+				System.out.println("creating new line with buffer size: " + soundLine.getBufferSize());
+			}
+			
 			if (available > 0) {
 				int written = soundBuffer.fill(lineBuffer, 0, available);
 				if (written > 0) {
@@ -41,16 +56,14 @@ public class JavaxAudioRenderer implements AudioRenderer {
 			soundLine.close();
 		}
 	}
-
-	@Override
-	public void streamInitialized(int channelCount, int sampleRate) {
+	
+	private void createSoundLine(int bufferSize) {
 		AudioFormat audioFormat = new AudioFormat(sampleRate, 16, channelCount, true, true);
 		DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
 		try {
 			soundLine = (SourceDataLine) AudioSystem.getLine(info);
-			soundLine.open(audioFormat);
+			soundLine.open(audioFormat, bufferSize);
 			soundLine.start();
-			
 			lineBuffer = new byte[soundLine.getBufferSize()];
 			soundBuffer = new SoundBuffer(STAGING_BUFFERS);
 		} catch (LineUnavailableException e) {
@@ -58,4 +71,11 @@ public class JavaxAudioRenderer implements AudioRenderer {
 		}
 	}
 
+	@Override
+	public void streamInitialized(int channelCount, int sampleRate) {
+		this.channelCount = channelCount;
+		this.sampleRate = sampleRate;
+		createSoundLine(DEFAULT_BUFFER_SIZE);
+	}
+
 }

src/com/limelight/binding/audio/SoundBuffer.java

@@ -24,6 +24,14 @@ public class SoundBuffer {
 		bufferList.addLast(buff);
 	}
 	
+	public int size() {
+		int size = 0;
+		for (ShortBufferDescriptor desc : bufferList) {
+			size += desc.length;
+		}
+		return size;
+	}
+	
 	public int fill(byte[] data, int offset, int length) {
 		int filled = 0;