Moved the code for registering extensions and creating instances to

StreamDecoder.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@154 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/openal/FileStream.java

@@ -21,32 +21,18 @@
 
 package com.threerings.openal;
 
-import java.util.HashMap;
-
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
-import java.io.InputStream;
 
 import java.nio.ByteBuffer;
 
 import java.util.ArrayList;
 
-import org.lwjgl.openal.AL10;
-
 /**
  * An audio stream read from one or more files.
  */
 public class FileStream extends Stream
 {
-    /**
-     * Registers a class of {@link StreamDecoder} for the specified file extension.
-     */
-    public static void registerExtension (String extension, Class clazz)
-    {
-        _extensions.put(extension, clazz);
-    }
-
     /**
      * Creates a new stream for the specified file.
      *
@@ -58,7 +44,7 @@ public class FileStream extends Stream
     {
         super(soundmgr);
         _file = new QueuedFile(file, loop);
-        _decoder = createDecoder(file);
+        _decoder = StreamDecoder.createInstance(file);
     }
 
     /**
@@ -93,43 +79,13 @@ public class FileStream extends Stream
             if (!_queue.isEmpty()) {
                 _file = _queue.remove(0);
             }
-            _decoder = createDecoder(_file.file);
+            _decoder = StreamDecoder.createInstance(_file.file);
             read = Math.max(0, read);
             read += _decoder.read(buf);
         }
         return read;
     }
 
-    /**
-     * Creates and initializes a stream decoder for the specified file.
-     */
-    protected StreamDecoder createDecoder (File file)
-        throws IOException
-    {
-        String path = file.getPath();
-        int idx = path.lastIndexOf('.');
-        if (idx == -1) {
-            Log.warning("Missing extension for file [file=" + path + "].");
-            return null;
-        }
-        String extension = path.substring(idx+1);
-        Class clazz = _extensions.get(extension);
-        if (clazz == null) {
-            Log.warning("No decoder registered for extension [extension=" + extension +
-                ", file=" + path + "].");
-            return null;
-        }
-        StreamDecoder decoder;
-        try {
-            decoder = (StreamDecoder)clazz.newInstance();
-        } catch (Exception e) {
-            Log.warning("Error instantiating decoder [file=" + path + ", error=" + e + "].");
-            return null;
-        }
-        decoder.init(new FileInputStream(file));
-        return decoder;
-    }
-
     /** The file currently being played. */
     protected QueuedFile _file;
 
@@ -155,11 +111,4 @@ public class FileStream extends Stream
             this.loop = loop;
         }
     }
-
-    /** Registered decoder classes. */
-    protected static HashMap<String, Class> _extensions = new HashMap<String, Class>();
-    static {
-        registerExtension("ogg", OggStreamDecoder.class);
-        registerExtension("mp3", Mp3StreamDecoder.class);
-    }
 }