1 /*
   2  * Copyright (c) 2007, 2015, 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 sun.java2d.marlin;
  27 
  28 import java.security.AccessController;
  29 import static sun.java2d.marlin.MarlinUtils.logInfo;
  30 import sun.security.action.GetPropertyAction;
  31 
  32 public final class MarlinProperties {
  33 
  34     private MarlinProperties() {
  35         // no-op
  36     }
  37 
  38     // marlin system properties
  39 
  40     public static boolean isUseThreadLocal() {
  41         return getBoolean("sun.java2d.renderer.useThreadLocal", "true");
  42     }
  43 
  44     /**
  45      * Return the initial edge capacity used to define initial arrays
  46      * (edges, polystack, crossings)
  47      *
  48      * @return 256 < initial edges < 65536 (4096 by default)
  49      */
  50     public static int getInitialEdges() {
  51         return align(
  52             getInteger("sun.java2d.renderer.edges", 4096, 64, 64 * 1024),
  53             64);
  54     }
  55 
  56     /**
  57      * Return the initial pixel size used to define initial arrays
  58      * (tile AA chunk, alpha line, buckets)
  59      *
  60      * @return 64 < initial pixel size < 32768 (2048 by default)
  61      */
  62     public static int getInitialImageSize() {
  63         return align(
  64             getInteger("sun.java2d.renderer.pixelsize", 2048, 64, 32 * 1024),
  65             64);
  66     }
  67 
  68     /**
  69      * Return the log(2) corresponding to subpixel on x-axis (
  70      *
  71      * @return 0 (1 subpixels) < initial pixel size < 8 (256 subpixels)
  72      * (3 by default ie 8 subpixels)
  73      */
  74     public static int getSubPixel_Log2_X() {
  75         return getInteger("sun.java2d.renderer.subPixel_log2_X", 3, 0, 8);
  76     }
  77 
  78     /**
  79      * Return the log(2) corresponding to subpixel on y-axis (
  80      *
  81      * @return 0 (1 subpixels) < initial pixel size < 8 (256 subpixels)
  82      * (3 by default ie 8 subpixels)
  83      */
  84     public static int getSubPixel_Log2_Y() {
  85         return getInteger("sun.java2d.renderer.subPixel_log2_Y", 3, 0, 8);
  86     }
  87 
  88     /**
  89      * Return the log(2) corresponding to the square tile size in pixels
  90      *
  91      * @return 3 (8x8 pixels) < tile size < 8 (256x256 pixels)
  92      * (5 by default ie 32x32 pixels)
  93      */
  94     public static int getTileSize_Log2() {
  95         return getInteger("sun.java2d.renderer.tileSize_log2", 5, 3, 10);
  96     }
  97 
  98     /**
  99      * Return the log(2) corresponding to the tile width in pixels
 100      *
 101      * @return 3 (8 pixels) < tile with < 8 (256 pixels)
 102      * (by default is given by the square tile size)
 103      */
 104     public static int getTileWidth_Log2() {
 105         final int tileSize = getTileSize_Log2();
 106         return getInteger("sun.java2d.renderer.tileWidth_log2", tileSize, 3, 10);
 107     }
 108 
 109     /**
 110      * Return the log(2) corresponding to the block size in pixels
 111      *
 112      * @return 3 (8 pixels) < block size < 8 (256 pixels)
 113      * (5 by default ie 32 pixels)
 114      */
 115     public static int getBlockSize_Log2() {
 116         return getInteger("sun.java2d.renderer.blockSize_log2", 5, 3, 8);
 117     }
 118 
 119     // RLE / blockFlags settings
 120 
 121     public static boolean isForceRLE() {
 122         return getBoolean("sun.java2d.renderer.forceRLE", "false");
 123     }
 124 
 125     public static boolean isForceNoRLE() {
 126         return getBoolean("sun.java2d.renderer.forceNoRLE", "false");
 127     }
 128 
 129     public static boolean isUseTileFlags() {
 130         return getBoolean("sun.java2d.renderer.useTileFlags", "true");
 131     }
 132 
 133     public static boolean isUseTileFlagsWithHeuristics() {
 134         return isUseTileFlags()
 135         && getBoolean("sun.java2d.renderer.useTileFlags.useHeuristics", "true");
 136     }
 137 
 138     public static int getRLEMinWidth() {
 139         return getInteger("sun.java2d.renderer.rleMinWidth", 64, 0, Integer.MAX_VALUE);
 140     }
 141 
 142     // optimisation parameters
 143 
 144     public static boolean isUseSimplifier() {
 145         return getBoolean("sun.java2d.renderer.useSimplifier", "false");
 146     }
 147 
 148     // debugging parameters
 149 
 150     public static boolean isDoStats() {
 151         return getBoolean("sun.java2d.renderer.doStats", "false");
 152     }
 153 
 154     public static boolean isDoMonitors() {
 155         return getBoolean("sun.java2d.renderer.doMonitors", "false");
 156     }
 157 
 158     public static boolean isDoChecks() {
 159         return getBoolean("sun.java2d.renderer.doChecks", "false");
 160     }
 161 
 162     // logging parameters
 163 
 164     public static boolean isLoggingEnabled() {
 165         return getBoolean("sun.java2d.renderer.log", "false");
 166     }
 167 
 168     public static boolean isUseLogger() {
 169         return getBoolean("sun.java2d.renderer.useLogger", "false");
 170     }
 171 
 172     public static boolean isLogCreateContext() {
 173         return getBoolean("sun.java2d.renderer.logCreateContext", "false");
 174     }
 175 
 176     public static boolean isLogUnsafeMalloc() {
 177         return getBoolean("sun.java2d.renderer.logUnsafeMalloc", "false");
 178     }
 179 
 180     // quality settings
 181 
 182     public static float getCubicDecD2() {
 183         return getFloat("sun.java2d.renderer.cubic_dec_d2", 1.0f, 0.01f, 4.0f);
 184     }
 185 
 186     public static float getCubicIncD1() {
 187         return getFloat("sun.java2d.renderer.cubic_inc_d1", 0.4f, 0.01f, 2.0f);
 188     }
 189 
 190     public static float getQuadDecD2() {
 191         return getFloat("sun.java2d.renderer.quad_dec_d2", 0.5f, 0.01f, 4.0f);
 192     }
 193 
 194     // system property utilities
 195     static boolean getBoolean(final String key, final String def) {
 196         return Boolean.valueOf(AccessController.doPrivileged(
 197                   new GetPropertyAction(key, def)));
 198     }
 199 
 200     static int getInteger(final String key, final int def,
 201                                  final int min, final int max)
 202     {
 203         final String property = AccessController.doPrivileged(
 204                                     new GetPropertyAction(key));
 205 
 206         int value = def;
 207         if (property != null) {
 208             try {
 209                 value = Integer.decode(property);
 210             } catch (NumberFormatException e) {
 211                 logInfo("Invalid integer value for " + key + " = " + property);
 212             }
 213         }
 214 
 215         // check for invalid values
 216         if ((value < min) || (value > max)) {
 217             logInfo("Invalid value for " + key + " = " + value
 218                     + "; expected value in range[" + min + ", " + max + "] !");
 219             value = def;
 220         }
 221         return value;
 222     }
 223 
 224     static int align(final int val, final int norm) {
 225         final int ceil = FloatMath.ceil_int( ((float)val) / norm);
 226         return ceil * norm;
 227     }
 228 
 229     public static double getDouble(final String key, final double def,
 230                                    final double min, final double max)
 231     {
 232         double value = def;
 233         final String property = AccessController.doPrivileged(
 234                                     new GetPropertyAction(key));
 235 
 236         if (property != null) {
 237             try {
 238                 value = Double.parseDouble(property);
 239             } catch (NumberFormatException nfe) {
 240                 logInfo("Invalid value for " + key + " = " + property + " !");
 241             }
 242         }
 243         // check for invalid values
 244         if (value < min || value > max) {
 245             logInfo("Invalid value for " + key + " = " + value
 246                     + "; expect value in range[" + min + ", " + max + "] !");
 247             value = def;
 248         }
 249         return value;
 250     }
 251 
 252     public static float getFloat(final String key, final float def,
 253                                  final float min, final float max)
 254     {
 255         return (float)getDouble(key, def, min, max);
 256     }
 257 }