| /* |
| * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.image; |
| |
| import java.awt.geom.AffineTransform; |
| import java.awt.image.AffineTransformOp; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.BufferedImageOp; |
| import java.awt.image.ByteLookupTable; |
| import java.awt.image.ConvolveOp; |
| import java.awt.image.Kernel; |
| import java.awt.image.LookupOp; |
| import java.awt.image.LookupTable; |
| import java.awt.image.RasterOp; |
| import java.awt.image.Raster; |
| import java.awt.image.WritableRaster; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * This class provides a hook to access platform-specific |
| * imaging code. |
| * |
| * If the implementing class cannot handle the op, tile format or |
| * image format, the method will return null; |
| * If there is an error when processing the |
| * data, the implementing class may either return null |
| * (in which case our java code will be executed) or may throw |
| * an exception. |
| */ |
| public class ImagingLib { |
| |
| static boolean useLib = true; |
| static boolean verbose = false; |
| |
| private static final int NUM_NATIVE_OPS = 3; |
| private static final int LOOKUP_OP = 0; |
| private static final int AFFINE_OP = 1; |
| private static final int CONVOLVE_OP = 2; |
| |
| private static Class[] nativeOpClass = new Class[NUM_NATIVE_OPS]; |
| |
| /** |
| * Returned value indicates whether the library initailization was |
| * succeded. |
| * |
| * There could be number of reasons to failure: |
| * - failed to load library. |
| * - failed to get all required entry points. |
| */ |
| private static native boolean init(); |
| |
| static public native int transformBI(BufferedImage src, BufferedImage dst, |
| double[] matrix, int interpType); |
| static public native int transformRaster(Raster src, Raster dst, |
| double[] matrix, |
| int interpType); |
| static public native int convolveBI(BufferedImage src, BufferedImage dst, |
| Kernel kernel, int edgeHint); |
| static public native int convolveRaster(Raster src, Raster dst, |
| Kernel kernel, int edgeHint); |
| static public native int lookupByteBI(BufferedImage src, BufferedImage dst, |
| byte[][] table); |
| static public native int lookupByteRaster(Raster src, Raster dst, |
| byte[][] table); |
| |
| static { |
| |
| PrivilegedAction<Boolean> doMlibInitialization = |
| new PrivilegedAction<Boolean>() { |
| public Boolean run() { |
| String arch = System.getProperty("os.arch"); |
| |
| if (arch == null || !arch.startsWith("sparc")) { |
| try { |
| System.loadLibrary("mlib_image"); |
| } catch (UnsatisfiedLinkError e) { |
| return Boolean.FALSE; |
| } |
| |
| } |
| boolean success = init(); |
| return Boolean.valueOf(success); |
| } |
| }; |
| |
| useLib = AccessController.doPrivileged(doMlibInitialization); |
| |
| // |
| // Cache the class references of the operations we know about |
| // at the time this class is initially loaded. |
| // |
| try { |
| nativeOpClass[LOOKUP_OP] = |
| Class.forName("java.awt.image.LookupOp"); |
| } catch (ClassNotFoundException e) { |
| System.err.println("Could not find class: "+e); |
| } |
| try { |
| nativeOpClass[AFFINE_OP] = |
| Class.forName("java.awt.image.AffineTransformOp"); |
| } catch (ClassNotFoundException e) { |
| System.err.println("Could not find class: "+e); |
| } |
| try { |
| nativeOpClass[CONVOLVE_OP] = |
| Class.forName("java.awt.image.ConvolveOp"); |
| } catch (ClassNotFoundException e) { |
| System.err.println("Could not find class: "+e); |
| } |
| |
| } |
| |
| private static int getNativeOpIndex(Class opClass) { |
| // |
| // Search for this class in cached list of |
| // classes supplying native acceleration |
| // |
| int opIndex = -1; |
| for (int i=0; i<NUM_NATIVE_OPS; i++) { |
| if (opClass == nativeOpClass[i]) { |
| opIndex = i; |
| break; |
| } |
| } |
| return opIndex; |
| } |
| |
| |
| public static WritableRaster filter(RasterOp op, Raster src, |
| WritableRaster dst) { |
| if (useLib == false) { |
| return null; |
| } |
| |
| // Create the destination tile |
| if (dst == null) { |
| dst = op.createCompatibleDestRaster(src); |
| } |
| |
| |
| WritableRaster retRaster = null; |
| switch (getNativeOpIndex(op.getClass())) { |
| |
| case LOOKUP_OP: |
| // REMIND: Fix this! |
| LookupTable table = ((LookupOp)op).getTable(); |
| if (table.getOffset() != 0) { |
| // Right now the native code doesn't support offsets |
| return null; |
| } |
| if (table instanceof ByteLookupTable) { |
| ByteLookupTable bt = (ByteLookupTable) table; |
| if (lookupByteRaster(src, dst, bt.getTable()) > 0) { |
| retRaster = dst; |
| } |
| } |
| break; |
| |
| case AFFINE_OP: |
| AffineTransformOp bOp = (AffineTransformOp) op; |
| double[] matrix = new double[6]; |
| bOp.getTransform().getMatrix(matrix); |
| if (transformRaster(src, dst, matrix, |
| bOp.getInterpolationType()) > 0) { |
| retRaster = dst; |
| } |
| break; |
| |
| case CONVOLVE_OP: |
| ConvolveOp cOp = (ConvolveOp) op; |
| if (convolveRaster(src, dst, |
| cOp.getKernel(), cOp.getEdgeCondition()) > 0) { |
| retRaster = dst; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (retRaster != null) { |
| SunWritableRaster.markDirty(retRaster); |
| } |
| |
| return retRaster; |
| } |
| |
| |
| public static BufferedImage filter(BufferedImageOp op, BufferedImage src, |
| BufferedImage dst) |
| { |
| if (verbose) { |
| System.out.println("in filter and op is "+op |
| + "bufimage is "+src+" and "+dst); |
| } |
| |
| if (useLib == false) { |
| return null; |
| } |
| |
| // Create the destination image |
| if (dst == null) { |
| dst = op.createCompatibleDestImage(src, null); |
| } |
| |
| BufferedImage retBI = null; |
| switch (getNativeOpIndex(op.getClass())) { |
| |
| case LOOKUP_OP: |
| // REMIND: Fix this! |
| LookupTable table = ((LookupOp)op).getTable(); |
| if (table.getOffset() != 0) { |
| // Right now the native code doesn't support offsets |
| return null; |
| } |
| if (table instanceof ByteLookupTable) { |
| ByteLookupTable bt = (ByteLookupTable) table; |
| if (lookupByteBI(src, dst, bt.getTable()) > 0) { |
| retBI = dst; |
| } |
| } |
| break; |
| |
| case AFFINE_OP: |
| AffineTransformOp bOp = (AffineTransformOp) op; |
| double[] matrix = new double[6]; |
| AffineTransform xform = bOp.getTransform(); |
| bOp.getTransform().getMatrix(matrix); |
| |
| if (transformBI(src, dst, matrix, |
| bOp.getInterpolationType())>0) { |
| retBI = dst; |
| } |
| break; |
| |
| case CONVOLVE_OP: |
| ConvolveOp cOp = (ConvolveOp) op; |
| if (convolveBI(src, dst, cOp.getKernel(), |
| cOp.getEdgeCondition()) > 0) { |
| retBI = dst; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (retBI != null) { |
| SunWritableRaster.markDirty(retBI); |
| } |
| |
| return retBI; |
| } |
| } |
