1 /*
2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.scenario.effect;
27
28 import java.security.AccessController;
29 import java.security.PrivilegedAction;
30 import java.util.HashSet;
31 import java.util.Iterator;
32 import com.sun.javafx.geom.Rectangle;
33 import com.sun.javafx.geom.transform.BaseTransform;
34 import com.sun.scenario.effect.impl.Renderer;
35
36 /**
37 * A simple container that holds an {@code Image} and the valid source
38 * region thereof. Instances of {@code ImageData} can be used as the input
39 * or output from an {@code EffectPeer}.
40 *
41 * Instances of this class must be validated against the {@code FilterContext}
42 * it intended to be used with using
43 * {@link #validate(com.sun.scenario.effect.FilterContext)} method.
44 */
45 public class ImageData {
46
47 private static HashSet<ImageData> alldatas;
48
49 static {
50 AccessController.doPrivileged(new PrivilegedAction() {
51 public Object run() {
52 if (System.getProperty("decora.showleaks") != null) {
53 alldatas = new HashSet<ImageData>();
54 Runtime.getRuntime().addShutdownHook(new Thread() {
55 @Override
56 public void run() {
57 Iterator<ImageData> datas = alldatas.iterator();
58 while (datas.hasNext()) {
59 ImageData id = datas.next();
60 Rectangle r = id.getUntransformedBounds();
61 System.out.println("id["+r.width+"x"+r.height+", refcount="+id.refcount+"] leaked from:");
62 id.fromwhere.printStackTrace(System.out);
63 }
64 }
65 });
66 }
67 return null;
68 }
69 });
70 }
71
72 private ImageData sharedOwner;
73 private FilterContext fctx;
74 private int refcount;
75 private Filterable image;
76 private final Rectangle bounds;
77 private BaseTransform transform;
78 private Throwable fromwhere;
79 private boolean reusable;
80
81 public ImageData(FilterContext fctx, Filterable image, Rectangle bounds) {
82 this(fctx, image, bounds, BaseTransform.IDENTITY_TRANSFORM);
83 }
84
85 public ImageData(FilterContext fctx, Filterable image, Rectangle bounds,
86 BaseTransform transform)
87 {
88 this.fctx = fctx;
89 this.refcount = 1;
90 this.image = image;
91 this.bounds = bounds;
92 this.transform = transform;
93 if (alldatas != null) {
94 alldatas.add(this);
95 this.fromwhere = new Throwable();
96 }
97 }
98
99 public ImageData transform(BaseTransform concattx) {
100 if (concattx.isIdentity()) {
101 return this;
102 }
103 BaseTransform newtx;
104 if (this.transform.isIdentity()) {
105 newtx = concattx;
106 } else {
107 newtx = concattx.copy().deriveWithConcatenation(this.transform);
108 }
109 return new ImageData(this, newtx, bounds);
110 }
111
112 private ImageData(ImageData original, BaseTransform transform,
113 Rectangle bounds)
114 {
115 this(original.fctx, original.image, bounds, transform);
116 this.sharedOwner = original;
117 }
118
119 public void setReusable(boolean reusable) {
120 if (sharedOwner != null) {
121 throw new InternalError("cannot make a shared ImageData reusable");
122 }
123 this.reusable = reusable;
124 }
125
126 public FilterContext getFilterContext() {
127 return fctx;
128 }
129
130 public Filterable getUntransformedImage() {
131 return image;
132 }
133
134 public Rectangle getUntransformedBounds() {
135 return bounds;
136 }
137
138 public BaseTransform getTransform() {
139 return transform;
140 }
141
142 public Filterable getTransformedImage(Rectangle clip) {
143 if (image == null || fctx == null) {
144 return null;
145 }
146 if (transform.isIdentity()) {
147 return image;
148 } else {
149 Rectangle txbounds = getTransformedBounds(clip);
150 return Renderer.getRenderer(fctx).
151 transform(fctx, image, transform, bounds, txbounds);
152 }
153 }
154
155 public void releaseTransformedImage(Filterable tximage) {
156 if (fctx != null && tximage != null && tximage != image) {
157 Effect.releaseCompatibleImage(fctx, tximage);
158 }
159 }
160
161 public Rectangle getTransformedBounds(Rectangle clip) {
162 if (transform.isIdentity()) {
163 return bounds;
164 }
165 Rectangle txbounds = new Rectangle();
166 transform.transform(bounds, txbounds);
167 if (clip != null) {
168 txbounds.intersectWith(clip);
169 }
170 return txbounds;
171 }
172
173 public int getReferenceCount() {
174 return refcount;
175 }
176
177 public boolean addref() {
178 if (reusable && refcount == 0) {
179 if (image != null) {
180 image.lock();
181 }
182 }
183 ++refcount;
184 return image != null && !image.isLost();
185 }
186
187 public void unref() {
188 if (--refcount == 0) {
189 if (sharedOwner != null) {
190 sharedOwner.unref();
191 sharedOwner = null;
192 } else if (fctx != null && image != null) {
193 if (reusable) {
194 image.unlock();
195 return;
196 }
197 Effect.releaseCompatibleImage(fctx, image);
198 }
199 // Just in case - to prevent releasing it twice
200 fctx = null;
201 image = null;
202 if (alldatas != null) {
203 alldatas.remove(this);
204 }
205 }
206 }
207
208 /**
209 * Validates this image data for the use with the passed
210 * {@link FilterContext}.
211 *
212 * @param fctx context to validate against
213 * @return {@code true} if this object is valid and compatible with
214 * the passed {@code FilterContext}, {@code false} otherwise.
215 */
216 public boolean validate(FilterContext fctx) {
217 return image != null &&
218 Renderer.getRenderer(fctx).isImageDataCompatible(this);
219 }
220
221 @Override
222 public String toString() {
223 return "ImageData{" +
224 "sharedOwner=" + sharedOwner +
225 ", fctx=" + fctx +
226 ", refcount=" + refcount +
227 ", image=" + image +
228 ", bounds=" + bounds +
229 ", transform=" + transform +
230 ", reusable=" + reusable + '}';
231 }
232 }