renamed package to com.jogamp.openal.*

1 files changed, 162 insertions, 0 deletions

diff --git a/src/java/com/jogamp/openal/impl/ALProcAddressLookup.java b/src/java/com/jogamp/openal/impl/ALProcAddressLookup.java
new file mode 100755
index 0000000..1b6407a
--- /dev/null
+++ b/src/java/com/jogamp/openal/impl/ALProcAddressLookup.java
@@ -0,0 +1,162 @@
+/**
+ * Copyright (c) 2003-2005 Sun Microsystems, Inc. All  Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * -Redistribution of source code must retain the above copyright notice, 
+ * this list of conditions and the following disclaimer.
+ *
+ * -Redistribution in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of contributors may 
+ * be used to endorse or promote products derived from this software without 
+ * specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
+ * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
+ * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS
+ * LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A
+ * RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
+ * IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT
+ * OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
+ * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed or intended for use in the
+ * design, construction, operation or maintenance of any nuclear facility.
+ */
+
+package com.jogamp.openal.impl;
+
+import java.lang.reflect.Field;
+
+import com.jogamp.openal.*;
+import com.jogamp.gluegen.runtime.*;
+import com.jogamp.openal.impl.ALCProcAddressTable;
+import com.jogamp.openal.impl.ALImpl;
+import com.jogamp.openal.impl.ALProcAddressTable;
+
+/** Helper class for managing OpenAL-related proc address tables. */
+
+public class ALProcAddressLookup {
+  private static final ALProcAddressTable  alTable  = new ALProcAddressTable();
+  private static volatile boolean          alTableInitialized = false;
+  private static final ALCProcAddressTable alcTable = new ALCProcAddressTable();
+  private static volatile boolean          alcTableInitialized = false;
+  private static final DynamicLookup       lookup   = new DynamicLookup();
+  private static volatile NativeLibrary    openAL   = null;
+
+  static class DynamicLookup implements DynamicLookupHelper {
+    public long dynamicLookupFunction(String functionName) {
+      // At some point this may require an OpenAL context to be
+      // current as we will actually use alGetProcAddress. Since
+      // this routine is currently broken and there are no
+      // per-context function pointers anyway we could actually do
+      // this work anywhere.
+      if (openAL == null) {
+        // We choose not to search the system path first because we
+        // bundle a very recent version of OpenAL which we would like
+        // to override existing installations
+        openAL = NativeLibrary.open("OpenAL32", "openal", "OpenAL",
+                                    false,
+                                    ALProcAddressLookup.class.getClassLoader());
+        if (openAL == null) {
+          throw new RuntimeException("Unable to find and load OpenAL library");
+        }
+      }
+      return openAL.dynamicLookupFunction(functionName);
+    }
+  }
+  
+  public static void resetALProcAddressTable() {
+    if (!alTableInitialized) {
+      synchronized (ALProcAddressLookup.class) {
+        if (!alTableInitialized) {
+          // At some point this may require an OpenAL context to be
+          // current as we will actually use alGetProcAddress. Since
+          // this routine is currently broken and there are no
+          // per-context function pointers anyway we could actually do
+          // this work anywhere. We should also in theory have
+          // per-ALcontext ALProcAddressTables and per-ALCdevice
+          // ALCProcAddressTables.
+          ProcAddressHelper.resetProcAddressTable(alTable, lookup);
+
+          // The above only manages to find addresses for the core OpenAL
+          // functions.  The below uses alGetProcAddress() to find the addresses
+          // of extensions such as EFX, just as in the C++ examples of the
+          // OpenAL 1.1 SDK.
+          useALGetProcAddress();
+
+          alTableInitialized = true;
+        }
+      }
+    }
+  }
+
+  public static void resetALCProcAddressTable() {
+    if (!alcTableInitialized) {
+      synchronized (ALProcAddressLookup.class) {
+        if (!alcTableInitialized) {
+          // At some point this may require an OpenAL device to be
+          // created as we will actually use alcGetProcAddress. Since
+          // this routine is currently broken and there are no
+          // per-device function pointers anyway we could actually do
+          // this work anywhere. We should also in theory have
+          // per-ALcontext ALProcAddressTables and per-ALCdevice
+          // ALCProcAddressTables.
+          ProcAddressHelper.resetProcAddressTable(alcTable, lookup);
+          alcTableInitialized = true;
+        }
+      }
+    }
+  }
+
+  public static ALProcAddressTable getALProcAddressTable() {
+    return alTable;
+  }
+
+  public static ALCProcAddressTable getALCProcAddressTable() {
+    return alcTable;
+  }
+
+
+  /**
+   * Retrieves the values of the OpenAL functions using alGetProcAddress().
+   */
+  private static void useALGetProcAddress() {
+    String addrOfPrefix = "_addressof_";
+    ALImpl al = (ALImpl) ALFactory.getAL();
+
+    Field[] fields = ALProcAddressTable.class.getFields();
+    for (int i = 0; i < fields.length; i++) {
+      Field field = fields[i];
+
+      // Skip non-address fields
+      String fieldname = field.getName();
+      if (!fieldname.startsWith(addrOfPrefix)) {
+        continue;
+      }
+      try {
+        String functionname = fieldname.substring(addrOfPrefix.length());
+        long fieldval = field.getLong(alTable);
+
+        // Skip fields which have already been valued
+        if (fieldval != 0) {
+          continue;
+        }
+
+        // Get the address
+        long procAddressVal = al.alGetProcAddress(functionname);
+        field.setLong(alTable, procAddressVal);
+      }
+      catch (Exception ex) {
+        throw new RuntimeException("Unable to repopulate ALProcAddressTable values", ex);
+      }
+    }
+  }
+}