add: default constructor for OpenAL

src/java/org/lwjgl/openal/AL.java

@@ -59,16 +59,25 @@ public class AL extends CoreAL {
   protected String deviceArguments;
   
   /** Frequency for mixing output buffer, in units of Hz. */
-  protected int contextFrequency;
+  protected int contextFrequency = -1;
   
   /** Refresh intervalls, in units of Hz. */
-  protected int contextRefresh;
+  protected int contextRefresh = -1;
   
   /** Flag, indicating a synchronous context. */
-  protected int contextSynchronized;
+  protected int contextSynchronized = ALC.FALSE;
+
+  /**
+   * Creates an OpenAL instance. The empty constructor will cause OpenAL to
+   * open the default device, and create a context using default values. 
+   */
+  public AL() {
+  }
 
 	/**
-   * Creates an OpenAL instance
+   * Creates an OpenAL instance. Using this constructor will cause OpenAL to
+   * open the device using supplied device argument, and create a context using the context values
+   * supplied. 
    * 
    * @param deviceArguments Arguments supplied to native device
    * @param contextFrequency Frequency for mixing output buffer, in units of Hz (Common values include 11025, 22050, and 44100).
@@ -93,10 +102,16 @@ public class AL extends CoreAL {
     alc.create();
     
     device = alc.openDevice(deviceArguments);
-    
+
+    //check if doing default values or not
+    if (contextFrequency == -1) {
+      context = alc.createContext(device.device, 0);    
+    } else {
     context = alc.createContext(device.device, 
                 Sys.getDirectBufferAddress(
                   ALCcontext.createAttributeList(contextFrequency, contextRefresh, contextSynchronized)));
+    }
+
                   
     alc.makeContextCurrent(context.context);     
 	}

src/java/org/lwjgl/test/openal/BasicTest.java

@@ -58,7 +58,7 @@ public abstract class BasicTest {
      * Creates an instance of PlayTest
      */
     public BasicTest() {
-        al      = new AL(null, 44100, 15, false);
+        al      = new AL();
         try {
             al.create();
         } catch (Exception e) {

src/java/org/lwjgl/test/openal/OpenALCreationTest.java

@@ -61,7 +61,7 @@ public class OpenALCreationTest {
 	 * Creates an instance of OpenALCreationTest
 	 */
 	public OpenALCreationTest() {
-		al = new AL(null, 44100, 15, false);
+		al = new AL();
 	}
 
 	public void alInitialize() {