450 lines
16 KiB
Java
450 lines
16 KiB
Java
/*
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* Copyright (c) 2007, 2013, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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package sun.java2d.cmm.lcms;
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import java.awt.image.BufferedImage;
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import java.awt.image.ComponentColorModel;
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import java.awt.image.ComponentSampleModel;
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import java.awt.image.DataBuffer;
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import java.awt.image.ColorModel;
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import java.awt.image.Raster;
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import java.awt.image.SampleModel;
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import sun.awt.image.ByteComponentRaster;
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import sun.awt.image.ShortComponentRaster;
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import sun.awt.image.IntegerComponentRaster;
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class LCMSImageLayout {
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public static int BYTES_SH(int x) {
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return x;
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}
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public static int EXTRA_SH(int x) {
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return x << 7;
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}
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public static int CHANNELS_SH(int x) {
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return x << 3;
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}
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public static final int SWAPFIRST = 1 << 14;
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public static final int DOSWAP = 1 << 10;
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public static final int PT_RGB_8 =
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CHANNELS_SH(3) | BYTES_SH(1);
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public static final int PT_GRAY_8 =
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CHANNELS_SH(1) | BYTES_SH(1);
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public static final int PT_GRAY_16 =
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CHANNELS_SH(1) | BYTES_SH(2);
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public static final int PT_RGBA_8 =
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EXTRA_SH(1) | CHANNELS_SH(3) | BYTES_SH(1);
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public static final int PT_ARGB_8 =
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EXTRA_SH(1) | CHANNELS_SH(3) | BYTES_SH(1) | SWAPFIRST;
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public static final int PT_BGR_8 =
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DOSWAP | CHANNELS_SH(3) | BYTES_SH(1);
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public static final int PT_ABGR_8 =
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DOSWAP | EXTRA_SH(1) | CHANNELS_SH(3) | BYTES_SH(1);
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public static final int PT_BGRA_8 = EXTRA_SH(1) | CHANNELS_SH(3)
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| BYTES_SH(1) | DOSWAP | SWAPFIRST;
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public static final int DT_BYTE = 0;
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public static final int DT_SHORT = 1;
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public static final int DT_INT = 2;
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public static final int DT_DOUBLE = 3;
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boolean isIntPacked = false;
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int pixelType;
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int dataType;
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int width;
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int height;
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int nextRowOffset;
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private int nextPixelOffset;
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int offset;
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/* This flag indicates whether the image can be processed
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* at once by doTransfrom() native call. Otherwise, the
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* image is processed scan by scan.
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*/
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private boolean imageAtOnce = false;
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Object dataArray;
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private int dataArrayLength; /* in bytes */
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private LCMSImageLayout(int np, int pixelType, int pixelSize)
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throws ImageLayoutException
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{
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this.pixelType = pixelType;
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width = np;
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height = 1;
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nextPixelOffset = pixelSize;
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nextRowOffset = safeMult(pixelSize, np);
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offset = 0;
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}
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private LCMSImageLayout(int width, int height, int pixelType,
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int pixelSize)
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throws ImageLayoutException
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{
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this.pixelType = pixelType;
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this.width = width;
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this.height = height;
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nextPixelOffset = pixelSize;
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nextRowOffset = safeMult(pixelSize, width);
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offset = 0;
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}
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public LCMSImageLayout(byte[] data, int np, int pixelType, int pixelSize)
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throws ImageLayoutException
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{
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this(np, pixelType, pixelSize);
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dataType = DT_BYTE;
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dataArray = data;
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dataArrayLength = data.length;
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verify();
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}
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public LCMSImageLayout(short[] data, int np, int pixelType, int pixelSize)
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throws ImageLayoutException
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{
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this(np, pixelType, pixelSize);
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dataType = DT_SHORT;
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dataArray = data;
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dataArrayLength = 2 * data.length;
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verify();
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}
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public LCMSImageLayout(int[] data, int np, int pixelType, int pixelSize)
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throws ImageLayoutException
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{
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this(np, pixelType, pixelSize);
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dataType = DT_INT;
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dataArray = data;
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dataArrayLength = 4 * data.length;
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verify();
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}
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public LCMSImageLayout(double[] data, int np, int pixelType, int pixelSize)
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throws ImageLayoutException
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{
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this(np, pixelType, pixelSize);
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dataType = DT_DOUBLE;
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dataArray = data;
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dataArrayLength = 8 * data.length;
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verify();
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}
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private LCMSImageLayout() {
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}
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/* This method creates a layout object for given image.
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* Returns null if the image is not supported by current implementation.
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*/
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public static LCMSImageLayout createImageLayout(BufferedImage image) throws ImageLayoutException {
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LCMSImageLayout l = new LCMSImageLayout();
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switch (image.getType()) {
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case BufferedImage.TYPE_INT_RGB:
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l.pixelType = PT_ARGB_8;
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l.isIntPacked = true;
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break;
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case BufferedImage.TYPE_INT_ARGB:
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l.pixelType = PT_ARGB_8;
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l.isIntPacked = true;
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break;
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case BufferedImage.TYPE_INT_BGR:
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l.pixelType = PT_ABGR_8;
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l.isIntPacked = true;
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break;
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case BufferedImage.TYPE_3BYTE_BGR:
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l.pixelType = PT_BGR_8;
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break;
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case BufferedImage.TYPE_4BYTE_ABGR:
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l.pixelType = PT_ABGR_8;
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break;
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case BufferedImage.TYPE_BYTE_GRAY:
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l.pixelType = PT_GRAY_8;
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break;
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case BufferedImage.TYPE_USHORT_GRAY:
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l.pixelType = PT_GRAY_16;
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break;
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default:
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/* ColorConvertOp creates component images as
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* default destination, so this kind of images
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* has to be supported.
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*/
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ColorModel cm = image.getColorModel();
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if (cm instanceof ComponentColorModel) {
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ComponentColorModel ccm = (ComponentColorModel) cm;
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// verify whether the component size is fine
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int[] cs = ccm.getComponentSize();
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for (int s : cs) {
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if (s != 8) {
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return null;
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}
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}
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return createImageLayout(image.getRaster());
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}
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return null;
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}
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l.width = image.getWidth();
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l.height = image.getHeight();
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switch (image.getType()) {
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case BufferedImage.TYPE_INT_RGB:
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case BufferedImage.TYPE_INT_ARGB:
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case BufferedImage.TYPE_INT_BGR:
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do {
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IntegerComponentRaster intRaster = (IntegerComponentRaster)
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image.getRaster();
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l.nextRowOffset = safeMult(4, intRaster.getScanlineStride());
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l.nextPixelOffset = safeMult(4, intRaster.getPixelStride());
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l.offset = safeMult(4, intRaster.getDataOffset(0));
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l.dataArray = intRaster.getDataStorage();
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l.dataArrayLength = 4 * intRaster.getDataStorage().length;
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l.dataType = DT_INT;
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if (l.nextRowOffset == l.width * 4 * intRaster.getPixelStride()) {
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l.imageAtOnce = true;
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}
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} while (false);
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break;
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case BufferedImage.TYPE_3BYTE_BGR:
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case BufferedImage.TYPE_4BYTE_ABGR:
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do {
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ByteComponentRaster byteRaster = (ByteComponentRaster)
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image.getRaster();
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l.nextRowOffset = byteRaster.getScanlineStride();
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l.nextPixelOffset = byteRaster.getPixelStride();
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int firstBand = image.getSampleModel().getNumBands() - 1;
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l.offset = byteRaster.getDataOffset(firstBand);
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l.dataArray = byteRaster.getDataStorage();
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l.dataArrayLength = byteRaster.getDataStorage().length;
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l.dataType = DT_BYTE;
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if (l.nextRowOffset == l.width * byteRaster.getPixelStride()) {
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l.imageAtOnce = true;
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}
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} while (false);
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break;
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case BufferedImage.TYPE_BYTE_GRAY:
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do {
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ByteComponentRaster byteRaster = (ByteComponentRaster)
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image.getRaster();
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l.nextRowOffset = byteRaster.getScanlineStride();
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l.nextPixelOffset = byteRaster.getPixelStride();
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l.dataArrayLength = byteRaster.getDataStorage().length;
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l.offset = byteRaster.getDataOffset(0);
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l.dataArray = byteRaster.getDataStorage();
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l.dataType = DT_BYTE;
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if (l.nextRowOffset == l.width * byteRaster.getPixelStride()) {
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l.imageAtOnce = true;
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}
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} while (false);
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break;
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case BufferedImage.TYPE_USHORT_GRAY:
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do {
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ShortComponentRaster shortRaster = (ShortComponentRaster)
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image.getRaster();
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l.nextRowOffset = safeMult(2, shortRaster.getScanlineStride());
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l.nextPixelOffset = safeMult(2, shortRaster.getPixelStride());
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l.offset = safeMult(2, shortRaster.getDataOffset(0));
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l.dataArray = shortRaster.getDataStorage();
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l.dataArrayLength = 2 * shortRaster.getDataStorage().length;
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l.dataType = DT_SHORT;
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if (l.nextRowOffset == l.width * 2 * shortRaster.getPixelStride()) {
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l.imageAtOnce = true;
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}
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} while (false);
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break;
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default:
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return null;
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}
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l.verify();
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return l;
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}
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private static enum BandOrder {
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DIRECT,
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INVERTED,
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ARBITRARY,
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UNKNOWN;
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public static BandOrder getBandOrder(int[] bandOffsets) {
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BandOrder order = UNKNOWN;
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int numBands = bandOffsets.length;
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for (int i = 0; (order != ARBITRARY) && (i < bandOffsets.length); i++) {
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switch (order) {
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case UNKNOWN:
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if (bandOffsets[i] == i) {
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order = DIRECT;
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} else if (bandOffsets[i] == (numBands - 1 - i)) {
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order = INVERTED;
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} else {
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order = ARBITRARY;
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}
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break;
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case DIRECT:
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if (bandOffsets[i] != i) {
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order = ARBITRARY;
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}
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break;
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case INVERTED:
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if (bandOffsets[i] != (numBands - 1 - i)) {
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order = ARBITRARY;
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}
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break;
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}
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}
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return order;
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}
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}
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private void verify() throws ImageLayoutException {
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if (offset < 0 || offset >= dataArrayLength) {
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throw new ImageLayoutException("Invalid image layout");
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}
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if (nextPixelOffset != getBytesPerPixel(pixelType)) {
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throw new ImageLayoutException("Invalid image layout");
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}
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int lastScanOffset = safeMult(nextRowOffset, (height - 1));
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int lastPixelOffset = safeMult(nextPixelOffset, (width -1 ));
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lastPixelOffset = safeAdd(lastPixelOffset, lastScanOffset);
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int off = safeAdd(offset, lastPixelOffset);
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if (off < 0 || off >= dataArrayLength) {
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throw new ImageLayoutException("Invalid image layout");
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}
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}
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static int safeAdd(int a, int b) throws ImageLayoutException {
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long res = a;
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res += b;
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if (res < Integer.MIN_VALUE || res > Integer.MAX_VALUE) {
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throw new ImageLayoutException("Invalid image layout");
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}
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return (int)res;
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}
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static int safeMult(int a, int b) throws ImageLayoutException {
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long res = a;
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res *= b;
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if (res < Integer.MIN_VALUE || res > Integer.MAX_VALUE) {
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throw new ImageLayoutException("Invalid image layout");
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}
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return (int)res;
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}
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public static class ImageLayoutException extends Exception {
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public ImageLayoutException(String message) {
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super(message);
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}
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}
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public static LCMSImageLayout createImageLayout(Raster r) {
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LCMSImageLayout l = new LCMSImageLayout();
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if (r instanceof ByteComponentRaster &&
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r.getSampleModel() instanceof ComponentSampleModel) {
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ByteComponentRaster br = (ByteComponentRaster)r;
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ComponentSampleModel csm = (ComponentSampleModel)r.getSampleModel();
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l.pixelType = CHANNELS_SH(br.getNumBands()) | BYTES_SH(1);
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int[] bandOffsets = csm.getBandOffsets();
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BandOrder order = BandOrder.getBandOrder(bandOffsets);
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int firstBand = 0;
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switch (order) {
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case INVERTED:
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l.pixelType |= DOSWAP;
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firstBand = csm.getNumBands() - 1;
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break;
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case DIRECT:
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// do nothing
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break;
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default:
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// unable to create the image layout;
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return null;
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}
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l.nextRowOffset = br.getScanlineStride();
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l.nextPixelOffset = br.getPixelStride();
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l.offset = br.getDataOffset(firstBand);
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l.dataArray = br.getDataStorage();
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l.dataType = DT_BYTE;
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l.width = br.getWidth();
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l.height = br.getHeight();
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if (l.nextRowOffset == l.width * br.getPixelStride()) {
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l.imageAtOnce = true;
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}
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return l;
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}
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return null;
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}
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/**
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* Derives number of bytes per pixel from the pixel format.
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* Following bit fields are used here:
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* [0..2] - bytes per sample
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* [3..6] - number of color samples per pixel
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* [7..9] - number of non-color samples per pixel
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*
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* A complete description of the pixel format can be found
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* here: lcms2.h, lines 651 - 667.
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*
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* @param pixelType pixel format in lcms2 notation.
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* @return number of bytes per pixel for given pixel format.
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*/
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private static int getBytesPerPixel(int pixelType) {
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int bytesPerSample = (0x7 & pixelType);
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int colorSamplesPerPixel = 0xF & (pixelType >> 3);
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int extraSamplesPerPixel = 0x7 & (pixelType >> 7);
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return bytesPerSample * (colorSamplesPerPixel + extraSamplesPerPixel);
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}
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}
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