-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.scenegraph.utils;\r
-\r
-import java.awt.GraphicsConfiguration;\r
-import java.awt.Image;\r
-import java.awt.Transparency;\r
-import java.awt.image.VolatileImage;\r
-import java.lang.ref.Reference;\r
-import java.lang.ref.SoftReference;\r
-import java.util.LinkedHashMap;\r
-import java.util.Map;\r
-import java.util.concurrent.atomic.AtomicInteger;\r
-\r
-/**\r
- * @author Antti Villberg\r
- */\r
-public class VolatileImageCache {\r
-\r
- private static final boolean DEBUG = false;\r
-\r
- private static VolatileImageCache instance = null;\r
-\r
- private VolatileImageCache() {\r
- }\r
-\r
- public static VolatileImageCache getInstance() {\r
- if (instance == null) {\r
- instance = new VolatileImageCache();\r
- }\r
- return instance;\r
- }\r
-\r
- /**\r
- * The max allowed size of the cache in megapixels. The amount of actual\r
- * consumed (video) memory is approximately 4 times this.\r
- */\r
- private static final int MAX_SIZE = 8 * 1024 * 1024;\r
-\r
-\r
- /**\r
- * Current size of the cache in megapixels.\r
- */\r
- private int size = 0;\r
- private int counter = 0;\r
-\r
- class VolatileImageProviderImpl implements VolatileImageProvider {\r
- private final int id;\r
- private final int w;\r
- private final int h;\r
-\r
- private Reference<VolatileImage> imageRef = null;\r
-\r
- public VolatileImageProviderImpl(int w, int h) {\r
- this.id = counter++;\r
- this.w = w;\r
- this.h = h;\r
- }\r
-\r
- private VolatileImage dereferenceImage() {\r
- return imageRef != null ? imageRef.get() : null;\r
- }\r
-\r
- public VolatileImage get(GraphicsConfiguration gc, AtomicInteger _validateResult) {\r
- int validateResult = VolatileImage.IMAGE_INCOMPATIBLE;\r
- VolatileImage vimg = dereferenceImage();\r
- //System.out.println("GC: " + gc);\r
- if (vimg != null)\r
- validateResult = vimg.validate(gc);\r
-\r
- if (validateResult == VolatileImage.IMAGE_RESTORED) {\r
- if (DEBUG)\r
- System.out.println("VOLATILE IMAGE RESTORED for PROVIDER " + this);\r
- }\r
- if (validateResult == VolatileImage.IMAGE_INCOMPATIBLE) {\r
- if (DEBUG)\r
- System.out.println("(RE)CREATING VOLATILE IMAGE FOR PROVIDER " + this);\r
- vimg = gc.createCompatibleVolatileImage(w, h, Transparency.TRANSLUCENT);\r
-\r
- if (vimg == null) {\r
- throw new IllegalStateException(this + ": got null VolatileImage from GraphicsConfiguration " + gc);\r
- } else {\r
- this.imageRef = new SoftReference<VolatileImage>(vimg);\r
-\r
- // Implement move to front required for LRU\r
- synchronized (cache) {\r
- Object oldObject = cache.remove(this);\r
- boolean wasCached = oldObject == this;\r
- cache.put(this, this);\r
- if (!wasCached) {\r
- size += w * h;\r
-\r
- if (DEBUG)\r
- debug(this, cache.size(), size - w*h, size, "created new image");\r
- } else {\r
- //if (DEBUG)\r
- // debug(this, cache.size(), size, size, "LRU move-to-front");\r
- }\r
- }\r
- }\r
- }\r
-\r
- if (_validateResult != null)\r
- _validateResult.set(validateResult);\r
-\r
- return vimg;\r
- }\r
-\r
- public void dispose() {\r
- int newSize;\r
- synchronized (cache) {\r
- newSize = size;\r
- Object removed = cache.remove(this);\r
- if (removed == this) {\r
- newSize -= w * h;\r
- size = newSize;\r
-\r
- if (DEBUG)\r
- debug(this, cache.size(), newSize + w*h, newSize, "explicitly disposed");\r
- }\r
- if (imageRef != null) {\r
- flushImageRef(imageRef);\r
- imageRef = null;\r
- }\r
- }\r
- }\r
- }\r
-\r
- private static final String MSG = "[provider #%-10d @%-8x][image (%-3d,%-3d)][cache entries=%-4d, old size=%-10d, new size=%-10d, size change=%-+6d] %s";\r
-\r
- private static void debug(VolatileImageProviderImpl i, int entries, int oldSize, int newSize, String msg) {\r
- if (DEBUG) {\r
- int sizeChange = newSize - oldSize;\r
- String s = String.format(MSG, i.id, i.hashCode(), i.w, i.h, entries, oldSize, newSize, sizeChange, msg);\r
- System.out.println(s);\r
- }\r
- }\r
-\r
- private final Map<VolatileImageProviderImpl,VolatileImageProviderImpl> cache = new LinkedHashMap<VolatileImageProviderImpl, VolatileImageProviderImpl>(50, .75F, true) {\r
- private static final long serialVersionUID = 5946026822169837291L;\r
- @Override\r
- protected boolean removeEldestEntry(Map.Entry<VolatileImageProviderImpl,VolatileImageProviderImpl> eldest) {\r
- boolean result = size > MAX_SIZE;\r
- if (result) {\r
-// new Exception().printStackTrace();\r
- VolatileImageProviderImpl impl = eldest.getKey();\r
- size -= impl.w*impl.h;\r
-\r
- //debug(impl, impl.imageId, cache.size(), oldSize, size, "cache full, dumping oldest");\r
-\r
- flushImageRef(impl.imageRef);\r
- impl.imageRef = null;\r
- }\r
- return result;\r
- }\r
- };\r
-\r
- private static final void flushImageRef(Reference<? extends Image> imageRef) {\r
- if (imageRef != null) {\r
- Image img = imageRef.get();\r
- imageRef.clear();\r
- if (img != null)\r
- img.flush();\r
- }\r
- }\r
-\r
- VolatileImageProvider create(int w, int h) {\r
-// System.out.println("VolatileImageProvider.create(" + w + ", " + h + ")");\r
- VolatileImageProviderImpl result = new VolatileImageProviderImpl(w, h);\r
- return result;\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.utils;
+
+import java.awt.GraphicsConfiguration;
+import java.awt.Image;
+import java.awt.Transparency;
+import java.awt.image.VolatileImage;
+import java.lang.ref.Reference;
+import java.lang.ref.SoftReference;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * @author Antti Villberg
+ */
+public class VolatileImageCache {
+
+ private static final boolean DEBUG = false;
+
+ private static VolatileImageCache instance = null;
+
+ private VolatileImageCache() {
+ }
+
+ public static VolatileImageCache getInstance() {
+ if (instance == null) {
+ instance = new VolatileImageCache();
+ }
+ return instance;
+ }
+
+ /**
+ * The max allowed size of the cache in megapixels. The amount of actual
+ * consumed (video) memory is approximately 4 times this.
+ */
+ private static final int MAX_SIZE = 8 * 1024 * 1024;
+
+
+ /**
+ * Current size of the cache in megapixels.
+ */
+ private int size = 0;
+ private int counter = 0;
+
+ class VolatileImageProviderImpl implements VolatileImageProvider {
+ private final int id;
+ private final int w;
+ private final int h;
+
+ private Reference<VolatileImage> imageRef = null;
+
+ public VolatileImageProviderImpl(int w, int h) {
+ this.id = counter++;
+ this.w = w;
+ this.h = h;
+ }
+
+ private VolatileImage dereferenceImage() {
+ return imageRef != null ? imageRef.get() : null;
+ }
+
+ public VolatileImage get(GraphicsConfiguration gc, AtomicInteger _validateResult) {
+ int validateResult = VolatileImage.IMAGE_INCOMPATIBLE;
+ VolatileImage vimg = dereferenceImage();
+ //System.out.println("GC: " + gc);
+ if (vimg != null)
+ validateResult = vimg.validate(gc);
+
+ if (validateResult == VolatileImage.IMAGE_RESTORED) {
+ if (DEBUG)
+ System.out.println("VOLATILE IMAGE RESTORED for PROVIDER " + this);
+ }
+ if (validateResult == VolatileImage.IMAGE_INCOMPATIBLE) {
+ if (DEBUG)
+ System.out.println("(RE)CREATING VOLATILE IMAGE FOR PROVIDER " + this);
+ vimg = gc.createCompatibleVolatileImage(w, h, Transparency.TRANSLUCENT);
+
+ if (vimg == null) {
+ throw new IllegalStateException(this + ": got null VolatileImage from GraphicsConfiguration " + gc);
+ } else {
+ this.imageRef = new SoftReference<VolatileImage>(vimg);
+
+ // Implement move to front required for LRU
+ synchronized (cache) {
+ Object oldObject = cache.remove(this);
+ boolean wasCached = oldObject == this;
+ cache.put(this, this);
+ if (!wasCached) {
+ size += w * h;
+
+ if (DEBUG)
+ debug(this, cache.size(), size - w*h, size, "created new image");
+ } else {
+ //if (DEBUG)
+ // debug(this, cache.size(), size, size, "LRU move-to-front");
+ }
+ }
+ }
+ }
+
+ if (_validateResult != null)
+ _validateResult.set(validateResult);
+
+ return vimg;
+ }
+
+ public void dispose() {
+ int newSize;
+ synchronized (cache) {
+ newSize = size;
+ Object removed = cache.remove(this);
+ if (removed == this) {
+ newSize -= w * h;
+ size = newSize;
+
+ if (DEBUG)
+ debug(this, cache.size(), newSize + w*h, newSize, "explicitly disposed");
+ }
+ if (imageRef != null) {
+ flushImageRef(imageRef);
+ imageRef = null;
+ }
+ }
+ }
+ }
+
+ private static final String MSG = "[provider #%-10d @%-8x][image (%-3d,%-3d)][cache entries=%-4d, old size=%-10d, new size=%-10d, size change=%-+6d] %s";
+
+ private static void debug(VolatileImageProviderImpl i, int entries, int oldSize, int newSize, String msg) {
+ if (DEBUG) {
+ int sizeChange = newSize - oldSize;
+ String s = String.format(MSG, i.id, i.hashCode(), i.w, i.h, entries, oldSize, newSize, sizeChange, msg);
+ System.out.println(s);
+ }
+ }
+
+ private final Map<VolatileImageProviderImpl,VolatileImageProviderImpl> cache = new LinkedHashMap<VolatileImageProviderImpl, VolatileImageProviderImpl>(50, .75F, true) {
+ private static final long serialVersionUID = 5946026822169837291L;
+ @Override
+ protected boolean removeEldestEntry(Map.Entry<VolatileImageProviderImpl,VolatileImageProviderImpl> eldest) {
+ boolean result = size > MAX_SIZE;
+ if (result) {
+// new Exception().printStackTrace();
+ VolatileImageProviderImpl impl = eldest.getKey();
+ size -= impl.w*impl.h;
+
+ //debug(impl, impl.imageId, cache.size(), oldSize, size, "cache full, dumping oldest");
+
+ flushImageRef(impl.imageRef);
+ impl.imageRef = null;
+ }
+ return result;
+ }
+ };
+
+ private static final void flushImageRef(Reference<? extends Image> imageRef) {
+ if (imageRef != null) {
+ Image img = imageRef.get();
+ imageRef.clear();
+ if (img != null)
+ img.flush();
+ }
+ }
+
+ VolatileImageProvider create(int w, int h) {
+// System.out.println("VolatileImageProvider.create(" + w + ", " + h + ")");
+ VolatileImageProviderImpl result = new VolatileImageProviderImpl(w, h);
+ return result;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff