Major media subsystem revamp:

- All images are loaded through the image manager
- Architected to allow the use of prepared or unprepared images (and
  volatile images when the day comes that they support alpha)
- Tunable caches for images and tiles
- Resource manager caches unpacked resources on the filesystem
- Various and sundry other cleanups


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2116 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/image/ImageDataProvider.java

@@ -0,0 +1,29 @@
+//
+// $Id: ImageDataProvider.java,v 1.1 2003/01/13 22:49:46 mdb Exp $
+
+package com.threerings.media.image;
+
+import java.io.IOException;
+import javax.imageio.stream.ImageInputStream;
+
+/**
+ * Provides access to image data for the image with the specified
+ * path. Images loaded from different data providers (which are
+ * differentiated by reference equality) will be considered distinct
+ * images with respect to caching.
+ */
+public interface ImageDataProvider
+{
+    /**
+     * Returns a string identifier for this image data provider which wil
+     * be used to differentiate it from other providers and thus should be
+     * unique.
+     */
+    public String getIdent ();
+
+    /**
+     * Returns an input stream from which the image data for the specified
+     * image may be loaded.
+     */
+    public ImageInputStream loadImageData (String path) throws IOException;
+}