russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
73 lines
3.2 KiB
Java
73 lines
3.2 KiB
Java
/*
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* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.color.ColorSpace;
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import java.awt.image.BufferedImage;
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import java.awt.image.ColorModel;
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import java.awt.image.ComponentColorModel;
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import java.awt.image.DataBuffer;
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import java.awt.image.DataBufferByte;
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import java.awt.image.Raster;
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import java.awt.image.WritableRaster;
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/*
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* @test
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* @bug 4954405
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* @summary Verify DataBuffer offsets are handled by ByteInterleavedRaster
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*/
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public class ByteInterleavedRasterOffsetsTest {
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public static void main(String[] args) {
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byte[] data = { 0, -1, 0, 0 }; // only set the R sample.
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int[] bandOffsets = { 0, 1, 2 };
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DataBuffer databuf = new DataBufferByte(data, 3, 1);
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WritableRaster raster =
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Raster.createInterleavedRaster(databuf, 1, 1, 3, 3, bandOffsets, null);
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int[] pixels = raster.getPixels(0, 0, 1, 1, (int[])null);
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byte[] elements = (byte[])raster.getDataElements(0, 0, null);
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ColorModel colorModel = new ComponentColorModel(
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ColorSpace.getInstance(ColorSpace.CS_sRGB), false, false,
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ColorModel.OPAQUE, DataBuffer.TYPE_BYTE);
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BufferedImage img = new BufferedImage(colorModel, raster, false, null);
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int pixel = img.getRGB(0, 0);
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System.out.println("PIXEL0=" + Integer.toHexString(pixels[0]));
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System.out.println("PIXEL1=" + Integer.toHexString(pixels[1]));
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System.out.println("PIXEL2=" + Integer.toHexString(pixels[2]));
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System.out.println("ELEMENT0=" + Integer.toHexString(elements[0] & 0xff));
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System.out.println("ELEMENT1=" + Integer.toHexString(elements[1] & 0xff));
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System.out.println("ELEMENT2=" + Integer.toHexString(elements[2] & 0xff));
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System.out.println("PIXEL=" + Integer.toHexString(pixel));
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if ((pixels[0] != 0xff) || (pixels[1] != 0) || (pixels[2] != 0)) {
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throw new RuntimeException("Unexpected pixels");
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}
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if (((elements[0] & 0xff) != 0xff) || (elements[1] != 0) || (elements[2] != 0)) {
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throw new RuntimeException("Unexpected elements");
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}
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if (pixel != 0xffff0000) {
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throw new RuntimeException("Unexpected pixel");
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}
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}
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}
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