0N/A/*
2362N/A * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A
0N/A
0N/Apackage sun.awt.image;
0N/A
0N/Aimport java.awt.Point;
0N/Aimport java.awt.image.BufferedImage;
0N/Aimport java.awt.image.ColorModel;
0N/Aimport java.awt.image.DataBuffer;
0N/Aimport java.awt.image.DirectColorModel;
0N/Aimport java.awt.image.PixelInterleavedSampleModel;
0N/Aimport java.awt.image.SampleModel;
0N/Aimport java.awt.image.SinglePixelPackedSampleModel;
0N/Aimport java.awt.image.WritableRaster;
0N/Aimport sun.java2d.SurfaceData;
0N/A
0N/A/**
0N/A * WritableRasterNative
0N/A * This class exists to wrap a native DataBuffer object. The
0N/A * standard WritableRaster object assumes that a DataBuffer
0N/A * of a given type (e.g., DataBuffer.TYPE_INT) implies a certain
0N/A * subclass (e.g., DataBufferInt). But this is not always the
0N/A * case. DataBufferNative, for example, may allow access to
0N/A * integer-based data, but it is not DataBufferInt (which is a
0N/A * final class and cannot be subclassed).
0N/A * So this class exists simply to allow the WritableRaster
0N/A * functionality for this new kind of DataBuffer object.
0N/A */
0N/Apublic class WritableRasterNative extends WritableRaster {
0N/A
0N/A public static WritableRasterNative createNativeRaster(SampleModel sm,
0N/A DataBuffer db)
0N/A {
0N/A return new WritableRasterNative(sm, db);
0N/A }
0N/A
0N/A protected WritableRasterNative(SampleModel sm, DataBuffer db) {
0N/A super(sm, db, new Point(0, 0));
0N/A }
0N/A
0N/A public static WritableRasterNative createNativeRaster(ColorModel cm,
0N/A SurfaceData sd,
0N/A int width,
0N/A int height)
0N/A {
0N/A SampleModel smHw = null;
0N/A int dataType = 0;
0N/A int scanStride = width;
0N/A
0N/A switch (cm.getPixelSize()) {
0N/A case 8:
0N/A case 12:
0N/A // 8-bits uses PixelInterleavedSampleModel
0N/A if (cm.getPixelSize() == 8) {
0N/A dataType = DataBuffer.TYPE_BYTE;
0N/A } else {
0N/A dataType = DataBuffer.TYPE_USHORT;
0N/A }
0N/A int[] bandOffsets = new int[1];
0N/A bandOffsets[0] = 0;
0N/A smHw = new PixelInterleavedSampleModel(dataType, width,
0N/A height,
0N/A 1, scanStride,
0N/A bandOffsets);
0N/A break;
0N/A
0N/A // all others use SinglePixelPackedSampleModel
0N/A case 15:
0N/A case 16:
0N/A dataType = DataBuffer.TYPE_USHORT;
0N/A int[] bitMasks = new int[3];
0N/A DirectColorModel dcm = (DirectColorModel)cm;
0N/A bitMasks[0] = dcm.getRedMask();
0N/A bitMasks[1] = dcm.getGreenMask();
0N/A bitMasks[2] = dcm.getBlueMask();
0N/A smHw = new SinglePixelPackedSampleModel(dataType, width,
0N/A height, scanStride,
0N/A bitMasks);
0N/A break;
0N/A case 24:
0N/A case 32:
0N/A dataType = DataBuffer.TYPE_INT;
0N/A bitMasks = new int[3];
0N/A dcm = (DirectColorModel)cm;
0N/A bitMasks[0] = dcm.getRedMask();
0N/A bitMasks[1] = dcm.getGreenMask();
0N/A bitMasks[2] = dcm.getBlueMask();
0N/A smHw = new SinglePixelPackedSampleModel(dataType, width,
0N/A height, scanStride,
0N/A bitMasks);
0N/A break;
0N/A default:
0N/A throw new InternalError("Unsupported depth " +
0N/A cm.getPixelSize());
0N/A }
0N/A
0N/A DataBuffer dbn = new DataBufferNative(sd, dataType,
0N/A width, height);
0N/A return new WritableRasterNative(smHw, dbn);
0N/A }
0N/A}