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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image | |
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diff --git a/libjava/classpath/java/awt/image/AffineTransformOp.java b/libjava/classpath/java/awt/image/AffineTransformOp.java new file mode 100644 index 000000000..460804f90 --- /dev/null +++ b/libjava/classpath/java/awt/image/AffineTransformOp.java @@ -0,0 +1,608 @@ +/* AffineTransformOp.java -- This class performs affine + transformation between two images or rasters in 2 dimensions. + Copyright (C) 2004, 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import java.awt.Graphics2D; +import java.awt.Point; +import java.awt.Rectangle; +import java.awt.RenderingHints; +import java.awt.geom.AffineTransform; +import java.awt.geom.NoninvertibleTransformException; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; +import java.util.Arrays; + +/** + * AffineTransformOp performs matrix-based transformations (translations, + * scales, flips, rotations, and shears). + * + * If interpolation is required, nearest neighbour, bilinear, and bicubic + * methods are available. + * + * @author Olga Rodimina (rodimina@redhat.com) + * @author Francis Kung (fkung@redhat.com) + */ +public class AffineTransformOp implements BufferedImageOp, RasterOp +{ + public static final int TYPE_NEAREST_NEIGHBOR = 1; + + public static final int TYPE_BILINEAR = 2; + + /** + * @since 1.5.0 + */ + public static final int TYPE_BICUBIC = 3; + + private AffineTransform transform; + private RenderingHints hints; + + /** + * Construct AffineTransformOp with the given xform and interpolationType. + * Interpolation type can be TYPE_BILINEAR, TYPE_BICUBIC or + * TYPE_NEAREST_NEIGHBOR. + * + * @param xform AffineTransform that will applied to the source image + * @param interpolationType type of interpolation used + * @throws ImagingOpException if the transform matrix is noninvertible + */ + public AffineTransformOp (AffineTransform xform, int interpolationType) + { + this.transform = xform; + if (xform.getDeterminant() == 0) + throw new ImagingOpException(null); + + switch (interpolationType) + { + case TYPE_BILINEAR: + hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, + RenderingHints.VALUE_INTERPOLATION_BILINEAR); + break; + case TYPE_BICUBIC: + hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, + RenderingHints.VALUE_INTERPOLATION_BICUBIC); + break; + default: + hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, + RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR); + } + } + + /** + * Construct AffineTransformOp with the given xform and rendering hints. + * + * @param xform AffineTransform that will applied to the source image + * @param hints rendering hints that will be used during transformation + * @throws ImagingOpException if the transform matrix is noninvertible + */ + public AffineTransformOp (AffineTransform xform, RenderingHints hints) + { + this.transform = xform; + this.hints = hints; + if (xform.getDeterminant() == 0) + throw new ImagingOpException(null); + } + + /** + * Creates a new BufferedImage with the size equal to that of the + * transformed image and the correct number of bands. The newly created + * image is created with the specified ColorModel. + * If a ColorModel is not specified, an appropriate ColorModel is used. + * + * @param src the source image. + * @param destCM color model for the destination image (can be null). + * @return a new compatible destination image. + */ + public BufferedImage createCompatibleDestImage (BufferedImage src, + ColorModel destCM) + { + if (destCM != null) + return new BufferedImage(destCM, + createCompatibleDestRaster(src.getRaster()), + src.isAlphaPremultiplied(), null); + + // This behaviour was determined by Mauve testcases, and is compatible + // with the reference implementation + if (src.getType() == BufferedImage.TYPE_INT_ARGB_PRE + || src.getType() == BufferedImage.TYPE_4BYTE_ABGR + || src.getType() == BufferedImage.TYPE_4BYTE_ABGR_PRE) + return new BufferedImage(src.getWidth(), src.getHeight(), src.getType()); + + else + return new BufferedImage(src.getWidth(), src.getHeight(), + BufferedImage.TYPE_INT_ARGB); + } + + /** + * Creates a new WritableRaster with the size equal to the transformed + * source raster and correct number of bands . + * + * @param src the source raster. + * @throws RasterFormatException if resulting width or height of raster is 0. + * @return a new compatible raster. + */ + public WritableRaster createCompatibleDestRaster (Raster src) + { + Rectangle2D rect = getBounds2D(src); + + if (rect.getWidth() == 0 || rect.getHeight() == 0) + throw new RasterFormatException("width or height is 0"); + + return src.createCompatibleWritableRaster((int) rect.getWidth(), + (int) rect.getHeight()); + } + + /** + * Transforms source image using transform specified at the constructor. + * The resulting transformed image is stored in the destination image if one + * is provided; otherwise a new BufferedImage is created and returned. + * + * @param src source image + * @param dst destination image + * @throws IllegalArgumentException if the source and destination image are + * the same + * @return transformed source image. + */ + public final BufferedImage filter (BufferedImage src, BufferedImage dst) + { + if (dst == src) + throw new IllegalArgumentException("src image cannot be the same as " + + "the dst image"); + + // If the destination image is null, then use a compatible BufferedImage + if (dst == null) + dst = createCompatibleDestImage(src, null); + + Graphics2D gr = dst.createGraphics(); + gr.setRenderingHints(hints); + gr.drawImage(src, transform, null); + return dst; + } + + /** + * Transforms source raster using transform specified at the constructor. + * The resulting raster is stored in the destination raster if it is not + * null, otherwise a new raster is created and returned. + * + * @param src source raster + * @param dst destination raster + * @throws IllegalArgumentException if the source and destination are not + * compatible + * @return transformed raster. + */ + public final WritableRaster filter(Raster src, WritableRaster dst) + { + // Initial checks + if (dst == src) + throw new IllegalArgumentException("src image cannot be the same as" + + " the dst image"); + + if (dst == null) + dst = createCompatibleDestRaster(src); + + if (src.getNumBands() != dst.getNumBands()) + throw new IllegalArgumentException("src and dst must have same number" + + " of bands"); + + // Optimization for rasters that can be represented in the RGB colormodel: + // wrap the rasters in images, and let Cairo do the transformation + if (ColorModel.getRGBdefault().isCompatibleSampleModel(src.getSampleModel()) + && ColorModel.getRGBdefault().isCompatibleSampleModel(dst.getSampleModel())) + { + WritableRaster src2 = Raster.createWritableRaster(src.getSampleModel(), + src.getDataBuffer(), + new Point(src.getMinX(), + src.getMinY())); + BufferedImage iSrc = new BufferedImage(ColorModel.getRGBdefault(), + src2, false, null); + BufferedImage iDst = new BufferedImage(ColorModel.getRGBdefault(), dst, + false, null); + + return filter(iSrc, iDst).getRaster(); + } + + // Otherwise, we need to do the transformation in java code... + // Create arrays to hold all the points + double[] dstPts = new double[dst.getHeight() * dst.getWidth() * 2]; + double[] srcPts = new double[dst.getHeight() * dst.getWidth() * 2]; + + // Populate array with all points in the *destination* raster + int i = 0; + for (int x = 0; x < dst.getWidth(); x++) + { + for (int y = 0; y < dst.getHeight(); y++) + { + dstPts[i++] = x; + dstPts[i++] = y; + } + } + Rectangle srcbounds = src.getBounds(); + + // Use an inverse transform to map each point in the destination to + // a point in the source. Note that, while all points in the destination + // matrix are integers, this is not necessarily true for points in the + // source (hence why interpolation is required) + try + { + AffineTransform inverseTx = transform.createInverse(); + inverseTx.transform(dstPts, 0, srcPts, 0, dstPts.length / 2); + } + catch (NoninvertibleTransformException e) + { + // Shouldn't happen since the constructor traps this + throw new ImagingOpException(e.getMessage()); + } + + // Different interpolation methods... + if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR)) + filterNearest(src, dst, dstPts, srcPts); + + else if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_BILINEAR)) + filterBilinear(src, dst, dstPts, srcPts); + + else // bicubic + filterBicubic(src, dst, dstPts, srcPts); + + return dst; + } + + /** + * Transforms source image using transform specified at the constructor and + * returns bounds of the transformed image. + * + * @param src image to be transformed + * @return bounds of the transformed image. + */ + public final Rectangle2D getBounds2D (BufferedImage src) + { + return getBounds2D (src.getRaster()); + } + + /** + * Returns bounds of the transformed raster. + * + * @param src raster to be transformed + * @return bounds of the transformed raster. + */ + public final Rectangle2D getBounds2D (Raster src) + { + return transform.createTransformedShape(src.getBounds()).getBounds2D(); + } + + /** + * Returns interpolation type used during transformations. + * + * @return interpolation type + */ + public final int getInterpolationType () + { + if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_BILINEAR)) + return TYPE_BILINEAR; + + else if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_BICUBIC)) + return TYPE_BICUBIC; + + else + return TYPE_NEAREST_NEIGHBOR; + } + + /** + * Returns location of the transformed source point. The resulting point + * is stored in the dstPt if one is specified. + * + * @param srcPt point to be transformed + * @param dstPt destination point + * @return the location of the transformed source point. + */ + public final Point2D getPoint2D (Point2D srcPt, Point2D dstPt) + { + return transform.transform (srcPt, dstPt); + } + + /** + * Returns rendering hints that are used during transformation. + * + * @return the rendering hints used in this Op. + */ + public final RenderingHints getRenderingHints () + { + return hints; + } + + /** + * Returns transform used in transformation between source and destination + * image. + * + * @return the transform used in this Op. + */ + public final AffineTransform getTransform () + { + return transform; + } + + /** + * Perform nearest-neighbour filtering + * + * @param src the source raster + * @param dst the destination raster + * @param dpts array of points on the destination raster + * @param pts array of corresponding points on the source raster + */ + private void filterNearest(Raster src, WritableRaster dst, double[] dpts, + double[] pts) + { + Rectangle srcbounds = src.getBounds(); + + // For all points on the destination raster, copy the value from the + // corrosponding (rounded) source point + for (int i = 0; i < dpts.length; i += 2) + { + int srcX = (int) Math.round(pts[i]) + src.getMinX(); + int srcY = (int) Math.round(pts[i + 1]) + src.getMinY(); + + if (srcbounds.contains(srcX, srcY)) + dst.setDataElements((int) dpts[i] + dst.getMinX(), + (int) dpts[i + 1] + dst.getMinY(), + src.getDataElements(srcX, srcY, null)); + } + } + + /** + * Perform bilinear filtering + * + * @param src the source raster + * @param dst the destination raster + * @param dpts array of points on the destination raster + * @param pts array of corresponding points on the source raster + */ + private void filterBilinear(Raster src, WritableRaster dst, double[] dpts, + double[] pts) + { + Rectangle srcbounds = src.getBounds(); + + Object xyarr = null; + Object xp1arr = null; + Object yp1arr = null; + Object xyp1arr = null; + + double xy; + double xp1; + double yp1; + double xyp1; + + double[] result = new double[src.getNumBands()]; + + // For all points in the destination raster, use bilinear interpolation + // to find the value from the corrosponding source points + for (int i = 0; i < dpts.length; i += 2) + { + int srcX = (int) Math.round(pts[i]) + src.getMinX(); + int srcY = (int) Math.round(pts[i + 1]) + src.getMinY(); + + if (srcbounds.contains(srcX, srcY)) + { + // Corner case at the bottom or right edge; use nearest neighbour + if (pts[i] >= src.getWidth() - 1 + || pts[i + 1] >= src.getHeight() - 1) + dst.setDataElements((int) dpts[i] + dst.getMinX(), + (int) dpts[i + 1] + dst.getMinY(), + src.getDataElements(srcX, srcY, null)); + + // Standard case, apply the bilinear formula + else + { + int x = (int) Math.floor(pts[i] + src.getMinX()); + int y = (int) Math.floor(pts[i + 1] + src.getMinY()); + double xdiff = pts[i] + src.getMinX() - x; + double ydiff = pts[i + 1] + src.getMinY() - y; + + // Get surrounding pixels used in interpolation... optimized + // to use the smallest datatype possible. + if (src.getTransferType() == DataBuffer.TYPE_DOUBLE + || src.getTransferType() == DataBuffer.TYPE_FLOAT) + { + xyarr = src.getPixel(x, y, (double[])xyarr); + xp1arr = src.getPixel(x+1, y, (double[])xp1arr); + yp1arr = src.getPixel(x, y+1, (double[])yp1arr); + xyp1arr = src.getPixel(x+1, y+1, (double[])xyp1arr); + } + else + { + xyarr = src.getPixel(x, y, (int[])xyarr); + xp1arr = src.getPixel(x+1, y, (int[])xp1arr); + yp1arr = src.getPixel(x, y+1, (int[])yp1arr); + xyp1arr = src.getPixel(x+1, y+1, (int[])xyp1arr); + } + // using + // array[] pixels = src.getPixels(x, y, 2, 2, pixels); + // instead of doing four individual src.getPixel() calls + // should be faster, but benchmarking shows that it's not... + + // Run interpolation for each band + for (int j = 0; j < src.getNumBands(); j++) + { + // Pull individual sample values out of array + if (src.getTransferType() == DataBuffer.TYPE_DOUBLE + || src.getTransferType() == DataBuffer.TYPE_FLOAT) + { + xy = ((double[])xyarr)[j]; + xp1 = ((double[])xp1arr)[j]; + yp1 = ((double[])yp1arr)[j]; + xyp1 = ((double[])xyp1arr)[j]; + } + else + { + xy = ((int[])xyarr)[j]; + xp1 = ((int[])xp1arr)[j]; + yp1 = ((int[])yp1arr)[j]; + xyp1 = ((int[])xyp1arr)[j]; + } + + // If all four samples are identical, there's no need to + // calculate anything + if (xy == xp1 && xy == yp1 && xy == xyp1) + result[j] = xy; + + // Run bilinear interpolation formula + else + result[j] = (xy * (1-xdiff) + xp1 * xdiff) + * (1-ydiff) + + (yp1 * (1-xdiff) + xyp1 * xdiff) + * ydiff; + } + + dst.setPixel((int)dpts[i] + dst.getMinX(), + (int)dpts[i+1] + dst.getMinY(), + result); + } + } + } + } + + /** + * Perform bicubic filtering + * based on http://local.wasp.uwa.edu.au/~pbourke/colour/bicubic/ + * + * @param src the source raster + * @param dst the destination raster + * @param dpts array of points on the destination raster + * @param pts array of corresponding points on the source raster + */ + private void filterBicubic(Raster src, WritableRaster dst, double[] dpts, + double[] pts) + { + Rectangle srcbounds = src.getBounds(); + double[] result = new double[src.getNumBands()]; + Object pixels = null; + + // For all points on the destination raster, perform bicubic interpolation + // from corrosponding source points + for (int i = 0; i < dpts.length; i += 2) + { + if (srcbounds.contains((int) Math.round(pts[i]) + src.getMinX(), + (int) Math.round(pts[i + 1]) + src.getMinY())) + { + int x = (int) Math.floor(pts[i] + src.getMinX()); + int y = (int) Math.floor(pts[i + 1] + src.getMinY()); + double dx = pts[i] + src.getMinX() - x; + double dy = pts[i + 1] + src.getMinY() - y; + Arrays.fill(result, 0); + + for (int m = - 1; m < 3; m++) + for (int n = - 1; n < 3; n++) + { + // R(x) = ( P(x+2)^3 - 4 P(x+1)^3 + 6 P(x)^3 - 4 P(x-1)^3 ) / 6 + double r1 = 0; + double r2 = 0; + + // Calculate R(m - dx) + double rx = m - dx + 2; + r1 += rx * rx * rx; + + rx = m - dx + 1; + if (rx > 0) + r1 -= 4 * rx * rx * rx; + + rx = m - dx; + if (rx > 0) + r1 += 6 * rx * rx * rx; + + rx = m - dx - 1; + if (rx > 0) + r1 -= 4 * rx * rx * rx; + + r1 /= 6; + + // Calculate R(dy - n); + rx = dy - n + 2; + if (rx > 0) + r2 += rx * rx * rx; + + rx = dy - n + 1; + if (rx > 0) + r2 -= 4 * rx * rx * rx; + + rx = dy - n; + if (rx > 0) + r2 += 6 * rx * rx * rx; + + rx = dy - n - 1; + if (rx > 0) + r2 -= 4 * rx * rx * rx; + + r2 /= 6; + + // Calculate F(i+m, j+n) R(m - dx) R(dy - n) + // Check corner cases + int srcX = x + m; + if (srcX >= src.getMinX() + src.getWidth()) + srcX = src.getMinX() + src.getWidth() - 1; + else if (srcX < src.getMinX()) + srcX = src.getMinX(); + + int srcY = y + n; + if (srcY >= src.getMinY() + src.getHeight()) + srcY = src.getMinY() + src.getHeight() - 1; + else if (srcY < src.getMinY()) + srcY = src.getMinY(); + + // Calculate once for each band, using the smallest + // datatype possible + if (src.getTransferType() == DataBuffer.TYPE_DOUBLE + || src.getTransferType() == DataBuffer.TYPE_FLOAT) + { + pixels = src.getPixel(srcX, srcY, (double[])pixels); + for (int j = 0; j < result.length; j++) + result[j] += ((double[])pixels)[j] * r1 * r2; + } + else + { + pixels = src.getPixel(srcX, srcY, (int[])pixels); + for (int j = 0; j < result.length; j++) + result[j] += ((int[])pixels)[j] * r1 * r2; + } + } + + // Put it all together + dst.setPixel((int)dpts[i] + dst.getMinX(), + (int)dpts[i+1] + dst.getMinY(), + result); + } + } + } +} diff --git a/libjava/classpath/java/awt/image/AreaAveragingScaleFilter.java b/libjava/classpath/java/awt/image/AreaAveragingScaleFilter.java new file mode 100644 index 000000000..db2335f1c --- /dev/null +++ b/libjava/classpath/java/awt/image/AreaAveragingScaleFilter.java @@ -0,0 +1,268 @@ +/* AreaAveragingScaleFilter.java -- Java class for filtering images + Copyright (C) 1999,2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * This filter should produce images which do not have image artifacts + * like broken lines which were originally unbroken. The cost is of + * course speed. Using bi-linear interpolation here against 4 pixel + * points should give the desired results although Sun does not + * specify what the exact algorithm should be. + * <br> + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public class AreaAveragingScaleFilter extends ReplicateScaleFilter +{ + /** + * Construct an instance of <code>AreaAveragingScaleFilter</code> which + * should be used in conjunction with a <code>FilteredImageSource</code> + * object. + * + * @param width the width of the destination image + * @param height the height of the destination image + */ + public AreaAveragingScaleFilter(int width, int height) { + super(width, height); + } + + /** + * The <code>ImageProducer</code> should call this method with a + * bit mask of hints from any of <code>RANDOMPIXELORDER</code>, + * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>, + * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code> from the + * <code>ImageConsumer</code> interface. + * <br> + * FIXME - more than likely Sun's implementation desires + * <code>TOPDOWNLEFTRIGHT</code> order and this method is overloaded here + * in order to assure that mask is part of the hints added to + * the consumer. + * + * @param flags a bit mask of hints + * @see ImageConsumer + */ + public void setHints(int flags) + { + if (consumer != null) + consumer.setHints(flags); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as a <code>byte</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, int offset, int scansize) + { + double rx = ((double) srcWidth) / destWidth; + double ry = ((double) srcHeight) / destHeight; + + int destScansize = (int) Math.round(scansize / rx); + + byte[] destPixels = averagePixels(x, y, w, h, + model, pixels, offset, scansize, + rx, ry, destScansize); + + if (consumer != null) + consumer.setPixels((int) Math.floor(x/rx), (int) Math.floor(y/ry), + (int) Math.ceil(w/rx), (int) Math.ceil(h/ry), + model, destPixels, 0, destScansize); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as an <code>int</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, int offset, int scansize) + { + double rx = ((double) srcWidth) / destWidth; + double ry = ((double) srcHeight) / destHeight; + + int destScansize = (int) Math.round(scansize / rx); + + int[] destPixels = averagePixels(x, y, w, h, + model, pixels, offset, scansize, + rx, ry, destScansize); + + if (consumer != null) + consumer.setPixels((int) Math.floor(x/rx), (int) Math.floor(y/ry), + (int) Math.ceil(w/rx), (int) Math.ceil(h/ry), + model, destPixels, 0, destScansize); + } + + /** + * This is a really terrible implementation, + * since it uses the nearest-neighbor method. This filter is rarely used though. + * + * @param srcx, srcy - Source rectangle upper-left corner + * @param srcw, srch - Source rectangle width and height + * @param model - Pixel color model + * @param srcPixels - Source pixel data. + * @param srcOffset - Starting offset into the source pixel data array. + * @param srcScansize - Source array scanline size. + * @param rx,ry - Scaling factor. + * @param destScansize - Destination array scanline size. + */ + private byte[] averagePixels(int srcx, int srcy, int srcw, int srch, + ColorModel model, byte[] srcPixels, + int srcOffset, int srcScansize, + double rx, double ry, int destScansize) + { + int destW = (int) Math.ceil(srcw/rx); + int destH = (int) Math.ceil(srch/ry); + byte[] destPixels = new byte[ destW * destH ]; + int sx, sy; + + int w = (int)Math.ceil(rx); + int h = (int)Math.ceil(ry); + + for(int x = 0; x < destW; x++) + for(int y = 0; y < destH; y++) + { + sx = (int) (x * rx); + sy = (int) (y * ry); + + int r,g,b,a; + r = g = b = a = 0; + + for(int i = 0; i < w; i++) + { + for(int j = 0; j < h; j++) + { + int idx = srcx + sx + i + (srcy + sy + j)*srcScansize; + r += model.getRed(srcPixels[ idx ]); + g += model.getGreen(srcPixels[ idx ]); + b += model.getBlue(srcPixels[ idx ]); + a += model.getAlpha(srcPixels[ idx ]); + } + } + + r = r / (w * h); + g = g / (w * h); + b = b / (w * h); + a = a / (w * h); + + // Does this really work? + destPixels[x + destScansize*y] = (byte)model.getDataElement + (new int[]{r, g, b, a}, 0); + } + + return destPixels; + } + + /** + * This is a really terrible implementation, + * since it uses the nearest-neighbor method. This filter is rarely used though. + * + * @param srcx, srcy - Source rectangle upper-left corner + * @param srcw, srch - Source rectangle width and height + * @param model - Pixel color model + * @param srcPixels - Source pixel data. + * @param srcOffset - Starting offset into the source pixel data array. + * @param srcScansize - Source array scanline size. + * @param rx,ry - Scaling factor. + * @param destScansize - Destination array scanline size. + */ + private int[] averagePixels(int srcx, int srcy, int srcw, int srch, + ColorModel model, int[] srcPixels, + int srcOffset, int srcScansize, + double rx, double ry, int destScansize) + { + int destW = (int) Math.ceil(srcw/rx); + int destH = (int) Math.ceil(srch/ry); + int[] destPixels = new int[ destW * destH ]; + int sx, sy; + + int w = (int)Math.ceil(rx); + int h = (int)Math.ceil(ry); + + for(int x = 0; x < destW; x++) + for(int y = 0; y < destH; y++) + { + sx = (int) (x * rx); + sy = (int) (y * ry); + + int r,g,b,a; + r = g = b = a = 0; + + for(int i = 0; i < w; i++) + { + for(int j = 0; j < h; j++) + { + int idx = srcx + sx + i + (srcy + sy + j)*srcScansize; + r += model.getRed(srcPixels[ idx ]); + g += model.getGreen(srcPixels[ idx ]); + b += model.getBlue(srcPixels[ idx ]); + a += model.getAlpha(srcPixels[ idx ]); + } + } + + r = r / (w * h); + g = g / (w * h); + b = b / (w * h); + a = a / (w * h); + + destPixels[x + destScansize*y] = model.getDataElement + (new int[]{r, g, b, a}, 0); + } + + return destPixels; + } +} diff --git a/libjava/classpath/java/awt/image/BandCombineOp.java b/libjava/classpath/java/awt/image/BandCombineOp.java new file mode 100644 index 000000000..f3a6c5756 --- /dev/null +++ b/libjava/classpath/java/awt/image/BandCombineOp.java @@ -0,0 +1,218 @@ +/* BandCombineOp.java - perform a combination on the bands of a raster + Copyright (C) 2004, 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; +import java.util.Arrays; + +/** + * Filter Raster pixels by applying a matrix. + * + * BandCombineOp applies a matrix to each pixel to produce new pixel values. + * The width of the matrix must be the same or one more than the number of + * bands in the source Raster. If one more, the pixels in the source are + * assumed to contain an implicit 1.0 at the end. + * + * The rows of the matrix are multiplied by the pixel to produce the values + * for the destination. Therefore the destination Raster must contain the + * same number of bands as the number of rows in the filter matrix. + * + * This Op assumes that samples are integers; floating point sample types will + * be rounded to their nearest integer value during filtering. + * + * @author Jerry Quinn (jlquinn@optonline.net) + */ +public class BandCombineOp implements RasterOp +{ + private RenderingHints hints; + private float[][] matrix; + + /** + * Construct a BandCombineOp. + * + * @param matrix The matrix to filter pixels with. + * @param hints Rendering hints to apply. Ignored. + * @throws ArrayIndexOutOfBoundsException if the matrix is invalid + */ + public BandCombineOp(float[][] matrix, RenderingHints hints) + { + this.matrix = new float[matrix.length][]; + int width = matrix[0].length; + for (int i = 0; i < matrix.length; i++) + { + this.matrix[i] = new float[width + 1]; + for (int j = 0; j < width; j++) + this.matrix[i][j] = matrix[i][j]; + + // The reference implementation pads the array with a trailing zero... + this.matrix[i][width] = 0; + } + + this.hints = hints; + } + + /** + * Filter Raster pixels through a matrix. Applies the Op matrix to source + * pixes to produce dest pixels. Each row of the matrix is multiplied by the + * src pixel components to produce the dest pixel. If matrix is one more than + * the number of bands in the src, the last element is implicitly multiplied + * by 1, i.e. added to the sum for that dest component. If dest is null, a + * suitable Raster is created. This implementation uses + * createCompatibleDestRaster. + * + * @param src The source Raster. + * @param dest The destination Raster, or null. + * @throws IllegalArgumentException if the destination raster is incompatible + * with the source raster. + * @return The filtered Raster. + * @see java.awt.image.RasterOp#filter(java.awt.image.Raster, + * java.awt.image.WritableRaster) + */ + public WritableRaster filter(Raster src, WritableRaster dest) { + if (dest == null) + dest = createCompatibleDestRaster(src); + else if (dest.getNumBands() != src.getNumBands() + || dest.getTransferType() != src.getTransferType()) + throw new IllegalArgumentException("Destination raster is incompatible with source raster"); + + // Filter the pixels + int[] spix = new int[matrix[0].length - 1]; + int[] spix2 = new int[matrix[0].length - 1]; + int[] dpix = new int[matrix.length]; + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + { + // In case matrix rows have implicit translation + spix[spix.length - 1] = 1; + src.getPixel(x, y, spix); + + // Do not re-calculate if pixel is identical to the last one + // (ie, blocks of the same colour) + if (!Arrays.equals(spix, spix2)) + { + System.arraycopy(spix, 0, spix2, 0, spix.length); + for (int i = 0; i < matrix.length; i++) + { + dpix[i] = 0; + for (int j = 0; j < matrix[0].length - 1; j++) + dpix[i] += spix[j] * (int)matrix[i][j]; + } + } + dest.setPixel(x, y, dpix); + } + + return dest; + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getBounds2D(java.awt.image.Raster) + */ + public final Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + /** + * Creates a new WritableRaster that can be used as the destination for this + * Op. The number of bands in the source raster must equal the number of rows + * in the op matrix, which must also be equal to either the number of columns + * or (columns - 1) in the matrix. + * + * @param src The source raster. + * @return A compatible raster. + * @see java.awt.image.RasterOp#createCompatibleDestRaster(java.awt.image.Raster) + * @throws IllegalArgumentException if the raster is incompatible with the + * matrix. + */ + public WritableRaster createCompatibleDestRaster(Raster src) + { + // Destination raster must have same number of bands as source + if (src.getNumBands() != matrix.length) + throw new IllegalArgumentException("Number of rows in matrix specifies an " + + "incompatible number of bands"); + + // We use -1 and -2 because we previously padded the rows with a trailing 0 + if (src.getNumBands() != matrix[0].length - 1 + && src.getNumBands() != matrix[0].length - 2) + throw new IllegalArgumentException("Incompatible number of bands: " + + "the number of bands in the raster must equal the number of " + + "columns in the matrix, optionally minus one"); + + return src.createCompatibleWritableRaster(); + } + + /** + * Return corresponding destination point for source point. Because this is + * not a geometric operation, it simply returns a copy of the source. + * + * @param src The source point. + * @param dst The destination point. + * @return dst The destination point. + * @see java.awt.image.RasterOp#getPoint2D(java.awt.geom.Point2D, + *java.awt.geom.Point2D) + */ + public final Point2D getPoint2D(Point2D src, Point2D dst) + { + if (dst == null) + return (Point2D)src.clone(); + + dst.setLocation(src); + return dst; + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getRenderingHints() + */ + public final RenderingHints getRenderingHints() + { + return hints; + } + + /** + * Return the matrix used in this operation. + * + * @return The matrix used in this operation. + */ + public final float[][] getMatrix() + { + return matrix; + } + +} diff --git a/libjava/classpath/java/awt/image/BandedSampleModel.java b/libjava/classpath/java/awt/image/BandedSampleModel.java new file mode 100644 index 000000000..7df6c8548 --- /dev/null +++ b/libjava/classpath/java/awt/image/BandedSampleModel.java @@ -0,0 +1,759 @@ +/* Copyright (C) 2004, 2005, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import gnu.java.awt.Buffers; +import gnu.java.lang.CPStringBuilder; + +/** + * A sample model that reads each sample value from a separate band in the + * {@link DataBuffer}. + * + * @author Jerry Quinn (jlquinn@optonline.net) + */ +public final class BandedSampleModel extends ComponentSampleModel +{ + private int[] bitMasks; + private int[] bitOffsets; + private int[] sampleSize; + private int dataBitOffset; + private int elemBits; + private int numberOfBits; + private int numElems; + + private static int[] createBankArray(int size) + { + int[] result = new int[size]; + for (int i = 0; i < size; i++) + result[i] = i; + return result; + } + + /** + * Creates a new <code>BandedSampleModel</code>. + * + * @param dataType the data buffer type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param numBands the number of bands. + */ + public BandedSampleModel(int dataType, int w, int h, int numBands) + { + this(dataType, w, h, w, createBankArray(numBands), new int[numBands]); + } + + /** + * Creates a new <code>BandedSampleModel</code>. + * + * @param dataType the data buffer type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param scanlineStride the number of data elements from a pixel in one + * row to the corresponding pixel in the next row. + * @param bankIndices the bank indices. + * @param bandOffsets the band offsets. + */ + public BandedSampleModel(int dataType, int w, int h, int scanlineStride, + int[] bankIndices, int[] bandOffsets) + { + super(dataType, w, h, 1, scanlineStride, bankIndices, bandOffsets); + } + + /** + * Creates a new data buffer that is compatible with this sample model. + * + * @return The new data buffer. + */ + public DataBuffer createDataBuffer() + { + int size = scanlineStride * height; + return Buffers.createBuffer(getDataType(), size, numBanks); + } + + /** + * Creates a new <code>SampleModel</code> that is compatible with this + * model and has the specified width and height. + * + * @param w the width (in pixels, must be greater than zero). + * @param h the height (in pixels, must be greater than zero). + * + * @return The new sample model. + * + * @throws IllegalArgumentException if <code>w</code> or <code>h</code> is + * not greater than zero. + * @throws IllegalArgumentException if <code>w * h</code> exceeds + * <code>Integer.MAX_VALUE</code>. + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + // NOTE: blackdown 1.4.1 sets all offsets to 0. Sun's 1.4.2 docs + // disagree. + + // Compress offsets so minimum is 0, others w*scanlineStride + int[] newoffsets = new int[bandOffsets.length]; + int[] order = new int[bandOffsets.length]; + for (int i = 0; i < bandOffsets.length; i++) + order[i] = i; + // FIXME: This is N^2, but not a big issue, unless there's a lot of + // bands... + for (int i = 0; i < bandOffsets.length; i++) + for (int j = i + 1; j < bandOffsets.length; j++) + if (bankIndices[order[i]] > bankIndices[order[j]] + || (bankIndices[order[i]] == bankIndices[order[j]] + && bandOffsets[order[i]] > bandOffsets[order[j]])) + { + int t = order[i]; order[i] = order[j]; order[j] = t; + } + int bank = 0; + int offset = 0; + for (int i = 0; i < bandOffsets.length; i++) + { + if (bankIndices[order[i]] != bank) + { + bank = bankIndices[order[i]]; + offset = 0; + } + newoffsets[order[i]] = offset; + offset += w * scanlineStride; + } + + return new BandedSampleModel(dataType, w, h, w, bankIndices, newoffsets); + } + + + public SampleModel createSubsetSampleModel(int[] bands) + { + if (bands.length > bankIndices.length) + throw new + RasterFormatException("BandedSampleModel createSubsetSampleModel too" + +" many bands"); + int[] newoff = new int[bands.length]; + int[] newbanks = new int[bands.length]; + for (int i = 0; i < bands.length; i++) + { + int b = bands[i]; + newoff[i] = bandOffsets[b]; + newbanks[i] = bankIndices[b]; + } + + return new BandedSampleModel(dataType, width, height, scanlineStride, + newbanks, newoff); + } + + /** + * Extract all samples of one pixel and return in an array of transfer type. + * + * Extracts the pixel at x, y from data and stores samples into the array + * obj. If obj is null, a new array of getTransferType() is created. + * + * @param x The x-coordinate of the pixel rectangle to store in + * <code>obj</code>. + * @param y The y-coordinate of the pixel rectangle to store in + * <code>obj</code>. + * @param obj The primitive array to store the pixels into or null to force + * creation. + * @param data The DataBuffer that is the source of the pixel data. + * @return The primitive array containing the pixel data. + * @see java.awt.image.SampleModel#getDataElements(int, int, + * java.lang.Object, java.awt.image.DataBuffer) + */ + public Object getDataElements(int x, int y, Object obj, DataBuffer data) + { + if (x < 0 || y < 0) + throw new ArrayIndexOutOfBoundsException( + "x and y must not be less than 0."); + int pixel = getSample(x, y, 0, data); + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + { + byte[] b = (byte[]) obj; + if (b == null) b = new byte[numBands]; + for (int i = 0; i < numBands; i++) + b[i] = (byte)getSample(x, y, i, data); + return b; + } + case DataBuffer.TYPE_SHORT: + case DataBuffer.TYPE_USHORT: + { + short[] b = (short[]) obj; + if (b == null) b = new short[numBands]; + for (int i = 0; i < numBands; i++) + b[i] = (short)getSample(x, y, i, data); + return b; + } + case DataBuffer.TYPE_INT: + { + int[] b = (int[]) obj; + if (b == null) b = new int[numBands]; + for (int i = 0; i < numBands; i++) + b[i] = getSample(x, y, i, data); + return b; + } + case DataBuffer.TYPE_FLOAT: + { + float[] b = (float[]) obj; + if (b == null) b = new float[numBands]; + for (int i = 0; i < numBands; i++) + b[i] = getSampleFloat(x, y, i, data); + return b; + } + case DataBuffer.TYPE_DOUBLE: + { + double[] b = (double[]) obj; + if (b == null) + b = new double[numBands]; + for (int i = 0; i < numBands; i++) + b[i] = getSample(x, y, i, data); + return b; + } + + default: + // Seems like the only sensible thing to do. + throw new ClassCastException(); + } + } + + /** + * Returns all the samples for the pixel at location <code>(x, y)</code> + * stored in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param iArray an array that will be populated with the sample values and + * returned as the result. The size of this array should be equal to the + * number of bands in the model. If the array is <code>null</code>, a new + * array is created. + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The samples for the specified pixel. + * + * @see #setPixel(int, int, int[], DataBuffer) + */ + public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) + { + if (iArray == null) + iArray = new int[numBands]; + for (int i = 0; i < numBands; i++) + iArray[i] = getSample(x, y, i, data); + + return iArray; + } + + /** + * Copy pixels from a region into an array. + * + * Copies the samples of the pixels in the rectangle starting at x, y that + * is w pixels wide and h scanlines high. When there is more than one band, + * the samples stored in order before the next pixel. This ordering isn't + * well specified in Sun's docs as of 1.4.2. + * + * If iArray is null, a new array is allocated, filled, and returned. + * + * @param x The x-coordinate of the pixel rectangle to store in + * <code>iArray</code>. + * @param y The y-coordinate of the pixel rectangle to store in + * <code>iArray</code>. + * @param w The width in pixels of the rectangle. + * @param h The height in pixels of the rectangle. + * @param iArray The int array to store the pixels into or null to force + * creation. + * @param data The DataBuffer that is the source of the pixel data. + * @return The primitive array containing the pixel data. + */ + public int[] getPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + if (x < 0 || y < 0) + throw new ArrayIndexOutOfBoundsException( + "x and y must not be less than 0."); + if (iArray == null) + iArray = new int[w * h * numBands]; + int outOffset = 0; + int maxX = x + w; + int maxY = y + h; + for (int yy = x; yy < maxY; yy++) + { + for (int xx = x; xx < maxX; xx++) + { + for (int b = 0; b < numBands; b++) + { + int offset = bandOffsets[b] + yy * scanlineStride + xx; + iArray[outOffset++] = + data.getElem(bankIndices[b], offset); + } + } + } + return iArray; + } + + /** + * Returns a sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int getSample(int x, int y, int b, DataBuffer data) + { + int offset = bandOffsets[b] + y * scanlineStride + x; + return data.getElem(bankIndices[b], offset); + } + + /** + * Returns a sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + * + * @see #getSample(int, int, int, DataBuffer) + */ + public float getSampleFloat(int x, int y, int b, DataBuffer data) + { + int offset = bandOffsets[b] + y * scanlineStride + x; + return data.getElemFloat(bankIndices[b], offset); + } + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + * + * @see #getSample(int, int, int, DataBuffer) + */ + public double getSampleDouble(int x, int y, int b, DataBuffer data) + { + int offset = bandOffsets[b] + y * scanlineStride + x; + return data.getElemDouble(bankIndices[b], offset); + } + + /** + * Copy one band's samples from a region into an array. + * + * Copies from one band the samples of the pixels in the rectangle starting + * at x, y that is w pixels wide and h scanlines high. + * + * If iArray is null, a new array is allocated, filled, and returned. + * + * @param x The x-coordinate of the pixel rectangle to store in + * <code>iArray</code>. + * @param y The y-coordinate of the pixel rectangle to store in + * <code>iArray</code>. + * @param w The width in pixels of the rectangle. + * @param h The height in pixels of the rectangle. + * @param b The band to retrieve. + * @param iArray The int array to store the pixels into or null to force + * creation. + * @param data The DataBuffer that is the source of the pixel data. + * @return The primitive array containing the pixel data. + */ + public int[] getSamples(int x, int y, int w, int h, int b, int[] iArray, + DataBuffer data) + { + if (x < 0 || y < 0) + throw new ArrayIndexOutOfBoundsException( + "x and y must not be less than 0."); + if (iArray == null) + iArray = new int[w * h]; + int outOffset = 0; + int maxX = x + w; + int maxY = y + h; + for (int yy = y; yy < maxY; yy++) + { + for (int xx = x; xx < maxX; xx++) + { + int offset = bandOffsets[b] + yy * scanlineStride + xx; + iArray[outOffset++] = + data.getElem(bankIndices[b], offset); + } + } + return iArray; + } + + /** + * Set the pixel at x, y to the value in the first element of the primitive + * array obj. + * + * @param x The x-coordinate of the data elements in <code>obj</code>. + * @param y The y-coordinate of the data elements in <code>obj</code>. + * @param obj The primitive array containing the data elements to set. + * @param data The DataBuffer to store the data elements into. + * @see java.awt.image.SampleModel#setDataElements(int, int, int, int, java.lang.Object, java.awt.image.DataBuffer) + */ + public void setDataElements(int x, int y, Object obj, DataBuffer data) + { + int transferType = getTransferType(); + if (getTransferType() != data.getDataType()) + { + throw new IllegalArgumentException("transfer type ("+ + getTransferType()+"), "+ + "does not match data "+ + "buffer type (" + + data.getDataType() + + ")."); + } + + int offset = y * scanlineStride + x; + + try + { + switch (transferType) + { + case DataBuffer.TYPE_BYTE: + { + DataBufferByte out = (DataBufferByte) data; + byte[] in = (byte[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + case DataBuffer.TYPE_SHORT: + { + DataBufferShort out = (DataBufferShort) data; + short[] in = (short[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + case DataBuffer.TYPE_USHORT: + { + DataBufferUShort out = (DataBufferUShort) data; + short[] in = (short[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + case DataBuffer.TYPE_INT: + { + DataBufferInt out = (DataBufferInt) data; + int[] in = (int[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + case DataBuffer.TYPE_FLOAT: + { + DataBufferFloat out = (DataBufferFloat) data; + float[] in = (float[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + case DataBuffer.TYPE_DOUBLE: + { + DataBufferDouble out = (DataBufferDouble) data; + double[] in = (double[]) obj; + for (int i = 0; i < numBands; i++) + out.getData(bankIndices[i])[offset + bandOffsets[i]] = in[i]; + return; + } + default: + throw new ClassCastException("Unsupported data type"); + } + } + catch (ArrayIndexOutOfBoundsException aioobe) + { + String msg = "While writing data elements" + + ", x=" + x + ", y=" + y + + ", width=" + width + ", height=" + height + + ", scanlineStride=" + scanlineStride + + ", offset=" + offset + + ", data.getSize()=" + data.getSize() + + ", data.getOffset()=" + data.getOffset() + + ": " + aioobe; + throw new ArrayIndexOutOfBoundsException(msg); + } + } + + /** + * Sets the samples for the pixel at (x, y) in the specified data buffer to + * the specified values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixel(int x, int y, int[] iArray, DataBuffer data) + { + for (int b = 0; b < numBands; b++) + data.setElem(bankIndices[b], bandOffsets[b] + y * scanlineStride + x, + iArray[b]); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray the pixel sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int inOffset = 0; + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = y * scanlineStride + (x + ww); + for (int b = 0; b < numBands; b++) + data.setElem(bankIndices[b], bandOffsets[b] + offset, + iArray[inOffset++]); + } + y++; + } + } + + /** + * Sets the sample value for band <code>b</code> of the pixel at location + * <code>(x, y)</code> in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param b the band index. + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @see #getSample(int, int, int, DataBuffer) + */ + public void setSample(int x, int y, int b, int s, DataBuffer data) + { + data.setElem(bankIndices[b], bandOffsets[b] + y * scanlineStride + x, s); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, float s, DataBuffer data) + { + data.setElemFloat(bankIndices[b], bandOffsets[b] + y * scanlineStride + x, + s); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, double s, DataBuffer data) + { + data.setElemDouble(bankIndices[b], bandOffsets[b] + y * scanlineStride + x, + s); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, int[] iArray, + DataBuffer data) + { + if (x < 0 || y < 0) + throw new ArrayIndexOutOfBoundsException( + "x and y must not be less than 0."); + int inOffset = 0; + + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + { + DataBufferByte out = (DataBufferByte) data; + byte[] bank = out.getData(bankIndices[b]); + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = bandOffsets[b] + y * scanlineStride + (x + ww); + bank[offset] = (byte)iArray[inOffset++]; + } + y++; + } + return; + } + case DataBuffer.TYPE_SHORT: + { + DataBufferShort out = (DataBufferShort) data; + short[] bank = out.getData(bankIndices[b]); + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = bandOffsets[b] + y * scanlineStride + (x + ww); + bank[offset] = (short)iArray[inOffset++]; + } + y++; + } + return; + } + case DataBuffer.TYPE_USHORT: + { + DataBufferShort out = (DataBufferShort) data; + short[] bank = out.getData(bankIndices[b]); + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = bandOffsets[b] + y * scanlineStride + (x + ww); + bank[offset] = (short)iArray[inOffset++]; + } + y++; + } + return; + } + case DataBuffer.TYPE_INT: + { + DataBufferInt out = (DataBufferInt) data; + int[] bank = out.getData(bankIndices[b]); + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = bandOffsets[b] + y * scanlineStride + (x + ww); + bank[offset] = iArray[inOffset++]; + } + y++; + } + return; + } + case DataBuffer.TYPE_FLOAT: + case DataBuffer.TYPE_DOUBLE: + break; + default: + throw new ClassCastException("Unsupported data type"); + } + + // Default implementation probably slower for float and double + for (int hh = 0; hh < h; hh++) + { + for (int ww = 0; ww < w; ww++) + { + int offset = bandOffsets[b] + y * scanlineStride + (x + ww); + data.setElem(bankIndices[b], offset, iArray[inOffset++]); + } + y++; + } + } + + /** + * Creates a String with some information about this SampleModel. + * @return A String describing this SampleModel. + * @see java.lang.Object#toString() + */ + public String toString() + { + CPStringBuilder result = new CPStringBuilder(); + result.append(getClass().getName()); + result.append("["); + result.append("scanlineStride=").append(scanlineStride); + for(int i = 0; i < bitMasks.length; i+=1) + { + result.append(", mask[").append(i).append("]=0x").append( + Integer.toHexString(bitMasks[i])); + } + + result.append("]"); + return result.toString(); + } +} diff --git a/libjava/classpath/java/awt/image/BufferStrategy.java b/libjava/classpath/java/awt/image/BufferStrategy.java new file mode 100644 index 000000000..e86aad60f --- /dev/null +++ b/libjava/classpath/java/awt/image/BufferStrategy.java @@ -0,0 +1,124 @@ +/* BufferStrategy.java -- describes image buffering resources + Copyright (C) 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.BufferCapabilities; +import java.awt.Graphics; + +/** + * This class describes a strategy for managing image buffering + * resources on a Canvas or Window. A given buffer strategy may make + * use of hardware acceleration or take advantage of features of the + * native graphics system. Examples of buffering strategies are + * double or triple buffering using either flipping or blitting. For + * the details of these algorithms see BufferCapabilities. + * + * To use a buffer strategy, you retrieve it from either the current + * GraphicsConfiguration or from the Component on which you'd like to + * draw. Then you can query the strategy's capabilities to make sure + * they're suitable. + * + * If the strategy's capabilities are suitable, you can obtain a + * graphics object and use it to draw with this strategy. Drawing + * with a buffer strategy requires extra care, however. You'll need + * to manually cause the next buffer to be shown on the output device. + * And since buffer strategies are usually implemented with a + * VolatileImage, you must frequently check that the contents of the + * buffer are valid and that the buffer still exists. + * + * A buffer strategy is usually implemented using a VolatileImage. + * + * @see VolatileImage + * @since 1.4 + */ +public abstract class BufferStrategy +{ + /** + * Creates a new buffer strategy. + */ + public BufferStrategy() + { + } + + /** + * Retrieves the capabilities of this buffer strategy. + * + * @return this buffer strategy's capabilities + */ + public abstract BufferCapabilities getCapabilities(); + + /** + * Retrieves a graphics object that can be used to draw using this + * buffer strategy. This method may not be synchronized so be + * careful when calling it from multiple threads. You also must + * manually dispose of this graphics object. + * + * @return a graphics object that can be used to draw using this + * buffer strategy + */ + public abstract Graphics getDrawGraphics(); + + /** + * Returns whether or not the buffer's resources have been reclaimed + * by the native graphics system. If the buffer resources have been + * lost then you'll need to obtain new resources before drawing + * again. For details, see the documentation for VolatileImage. + * + * @return true if the contents were lost, false otherwise + */ + public abstract boolean contentsLost(); + + /** + * Returns whether or not the buffer's resources were re-created and + * cleared to the default background color. If the buffer's + * resources have recently been re-created and initialized then the + * buffer's image may need to be re-rendered. For details, see the + * documentation for VolatileImage. + * + * @return true if the contents were restored, false otherwise + */ + public abstract boolean contentsRestored(); + + /** + * Applies this buffer strategy. In other words, this method brings + * the contents of the back or intermediate buffers to the front + * buffer. + */ + public abstract void show(); +} diff --git a/libjava/classpath/java/awt/image/BufferedImage.java b/libjava/classpath/java/awt/image/BufferedImage.java new file mode 100644 index 000000000..094c71dd1 --- /dev/null +++ b/libjava/classpath/java/awt/image/BufferedImage.java @@ -0,0 +1,839 @@ +/* BufferedImage.java -- + Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; +import gnu.java.awt.ClasspathGraphicsEnvironment; +import gnu.java.awt.ComponentDataBlitOp; +import gnu.java.lang.CPStringBuilder; + +import java.awt.Graphics; +import java.awt.Graphics2D; +import java.awt.GraphicsEnvironment; +import java.awt.Image; +import java.awt.Point; +import java.awt.Rectangle; +import java.awt.Transparency; +import java.awt.color.ColorSpace; +import java.util.Hashtable; +import java.util.Vector; + +/** + * A buffered image always starts at coordinates (0, 0). + * + * The buffered image is not subdivided into multiple tiles. Instead, + * the image consists of one large tile (0,0) with the width and + * height of the image. This tile is always considered to be checked + * out. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class BufferedImage extends Image + implements WritableRenderedImage, Transparency +{ + public static final int TYPE_CUSTOM = 0, + TYPE_INT_RGB = 1, + TYPE_INT_ARGB = 2, + TYPE_INT_ARGB_PRE = 3, + TYPE_INT_BGR = 4, + TYPE_3BYTE_BGR = 5, + TYPE_4BYTE_ABGR = 6, + TYPE_4BYTE_ABGR_PRE = 7, + TYPE_USHORT_565_RGB = 8, + TYPE_USHORT_555_RGB = 9, + TYPE_BYTE_GRAY = 10, + TYPE_USHORT_GRAY = 11, + TYPE_BYTE_BINARY = 12, + TYPE_BYTE_INDEXED = 13; + + /** + * Vector of TileObservers (or null) + */ + Vector<TileObserver> tileObservers; + + /** + * The image's WritableRaster + */ + WritableRaster raster; + + /** + * The associated ColorModel + */ + ColorModel colorModel; + + /** + * The image's properties (or null) + */ + Hashtable properties; + + /** + * Whether alpha is premultiplied + */ + boolean isPremultiplied; + + /** + * The predefined type, if any. + */ + int type; + + /** + * Creates a new <code>BufferedImage</code> with the specified width, height + * and type. Valid <code>type</code> values are: + * + * <ul> + * <li>{@link #TYPE_INT_RGB}</li> + * <li>{@link #TYPE_INT_ARGB}</li> + * <li>{@link #TYPE_INT_ARGB_PRE}</li> + * <li>{@link #TYPE_INT_BGR}</li> + * <li>{@link #TYPE_3BYTE_BGR}</li> + * <li>{@link #TYPE_4BYTE_ABGR}</li> + * <li>{@link #TYPE_4BYTE_ABGR_PRE}</li> + * <li>{@link #TYPE_USHORT_565_RGB}</li> + * <li>{@link #TYPE_USHORT_555_RGB}</li> + * <li>{@link #TYPE_BYTE_GRAY}</li> + * <li>{@link #TYPE_USHORT_GRAY}</li> + * <li>{@link #TYPE_BYTE_BINARY}</li> + * <li>{@link #TYPE_BYTE_INDEXED}</li> + * </ul> + * + * @param width the width (must be > 0). + * @param height the height (must be > 0). + * @param type the image type (see the list of valid types above). + * + * @throws IllegalArgumentException if <code>width</code> or + * <code>height</code> is less than or equal to zero. + * @throws IllegalArgumentException if <code>type</code> is not one of the + * specified values. + */ + public BufferedImage(int width, int height, int type) + { + SampleModel sm = null; + ColorModel cm = null; + boolean premultiplied = (type == BufferedImage.TYPE_INT_ARGB_PRE + || type == BufferedImage.TYPE_4BYTE_ABGR_PRE); + + switch( type ) + { + case BufferedImage.TYPE_INT_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x00FF0000, + 0x0000FF00, + 0x000000FF } ) ; + cm = new DirectColorModel( 24, 0xff0000, 0xff00, 0xff ); + break; + + case BufferedImage.TYPE_3BYTE_BGR: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, + width, height, + 3, width * 3, + new int[]{ 2, 1, 0 } ); + cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), + false, false, + BufferedImage.OPAQUE, + DataBuffer.TYPE_BYTE); + break; + + case BufferedImage.TYPE_INT_ARGB: + case BufferedImage.TYPE_INT_ARGB_PRE: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x00FF0000, + 0x0000FF00, + 0x000000FF, + 0xFF000000 } ); + if (premultiplied) + cm = new DirectColorModel( ColorSpace.getInstance(ColorSpace.CS_sRGB), + 32, 0xff0000, 0xff00, 0xff, 0xff000000, + true, + Buffers.smallestAppropriateTransferType(32)); + else + cm = new DirectColorModel( 32, 0xff0000, 0xff00, 0xff, 0xff000000 ); + + break; + + case BufferedImage.TYPE_4BYTE_ABGR: + case BufferedImage.TYPE_4BYTE_ABGR_PRE: + sm = new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE, + width, height, + 4, 4*width, + new int[]{3, 2, 1, 0}); + cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), + true, premultiplied, + BufferedImage.TRANSLUCENT, + DataBuffer.TYPE_BYTE); + break; + + case BufferedImage.TYPE_INT_BGR: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_INT, + width, height, + new int[]{ 0x000000FF, + 0x0000FF00, + 0x00FF0000 } ) ; + cm = new DirectColorModel( 24, 0xff, 0xff00, 0xff0000 ); + break; + + case BufferedImage.TYPE_USHORT_565_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + new int[]{ 0xF800, + 0x7E0, + 0x1F } ) ; + cm = new DirectColorModel( 16, 0xF800, 0x7E0, 0x1F ); + break; + + case BufferedImage.TYPE_USHORT_555_RGB: + sm = new SinglePixelPackedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + new int[]{ 0x7C00, + 0x3E0, + 0x1F } ) ; + cm = new DirectColorModel( 15, 0x7C00, 0x3E0, 0x1F ); + break; + + case BufferedImage.TYPE_BYTE_INDEXED: + cm = createDefaultIndexedColorModel( false ); + + case BufferedImage.TYPE_BYTE_GRAY: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_BYTE, + width, height, + 1, width, new int[]{ 0 } ); + break; + + case BufferedImage.TYPE_USHORT_GRAY: + sm = new PixelInterleavedSampleModel( DataBuffer.TYPE_USHORT, + width, height, + 1, width, new int[]{ 0 } ); + break; + + case BufferedImage.TYPE_BYTE_BINARY: + cm = createDefaultIndexedColorModel( true ); + sm = new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE, + width, height, 1); + break; + + default: + sm = null; + } + + if( sm == null ) + throw new IllegalArgumentException("Unknown predefined image type."); + + if( cm == null ) // only for the grayscale types + { + int buftype; + int[] bits = new int[1]; + if( type == BufferedImage.TYPE_BYTE_GRAY ) + { + buftype = DataBuffer.TYPE_BYTE; + bits[0] = 8; + } + else + { + buftype = DataBuffer.TYPE_USHORT; + bits[0] = 16; + } + ColorSpace graySpace = ColorSpace.getInstance( ColorSpace.CS_GRAY ); + + cm = new ComponentColorModel( graySpace, bits, false, false, + Transparency.OPAQUE, buftype ); + } + + WritableRaster rst = null; + + // Attempt to create an accelerated backend for this image + GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment(); + if (env instanceof ClasspathGraphicsEnvironment) + rst = ((ClasspathGraphicsEnvironment)env).createRaster(cm, sm); + + // Default to a standard Java raster & databuffer if needed + if (rst == null) + rst = Raster.createWritableRaster(sm, new Point( 0, 0 ) ); + + init(cm, rst, premultiplied, + null, // no properties + type ); + } + + public BufferedImage(int w, int h, int type, IndexColorModel indexcolormodel) + { + if ((type != TYPE_BYTE_BINARY) && (type != TYPE_BYTE_INDEXED)) + throw new IllegalArgumentException("Type must be TYPE_BYTE_BINARY or TYPE_BYTE_INDEXED"); + if( indexcolormodel.getMapSize() > 16 && type == TYPE_BYTE_BINARY ) + throw new IllegalArgumentException("Type TYPE_BYTE_BINARY cannot have a larger than 16-color palette."); + if( indexcolormodel.getMapSize() > 256 ) + throw new IllegalArgumentException("Byte type cannot have a larger than 256-color palette."); + + init( indexcolormodel, + indexcolormodel.createCompatibleWritableRaster(w, h), + indexcolormodel.isAlphaPremultiplied(), + null, // no properties + type ); + } + + public BufferedImage(ColorModel colormodel, WritableRaster writableraster, + boolean premultiplied, Hashtable<?,?> properties) + { + init(colormodel, writableraster, premultiplied, properties, TYPE_CUSTOM); + } + + + private void init(ColorModel cm, WritableRaster writableraster, + boolean premultiplied, Hashtable properties, int type) + { + raster = writableraster; + colorModel = cm; + this.properties = properties; + isPremultiplied = premultiplied; + this.type = type; + } + + /** + * Creates the default palettes for the predefined indexed color types + * (256-color or black-and-white) + * + * @param binary - If <code>true</code>, a black and white palette, + * otherwise a default 256-color palette is returned. + */ + private IndexColorModel createDefaultIndexedColorModel( boolean binary ) + { + if( binary ) + { + byte[] t = new byte[]{ 0, (byte)255 }; + return new IndexColorModel( 1, 2, t, t, t ); + } + + byte[] r = new byte[256]; + byte[] g = new byte[256]; + byte[] b = new byte[256]; + + int index = 0; + for( int i = 0; i < 6; i++ ) + for( int j = 0; j < 6; j++ ) + for( int k = 0; k < 6; k++ ) + { + r[ index ] = (byte)(i * 51); + g[ index ] = (byte)(j * 51); + b[ index ] = (byte)(k * 51); + index++; + } + + while( index < 256 ) + { + r[ index ] = g[ index ] = b[ index ] = + (byte)(18 + (index - 216) * 6); + index++; + } + + return new IndexColorModel( 8, 256, r, g, b ); + } + + public void coerceData(boolean premultiplied) + { + colorModel = colorModel.coerceData(raster, premultiplied); + isPremultiplied = premultiplied; + } + + public WritableRaster copyData(WritableRaster dest) + { + if (dest == null) + dest = raster.createCompatibleWritableRaster(getMinX(), getMinY(), + getWidth(),getHeight()); + + int x = dest.getMinX(); + int y = dest.getMinY(); + int w = dest.getWidth(); + int h = dest.getHeight(); + + // create a src child that has the right bounds... + WritableRaster src = + raster.createWritableChild(x, y, w, h, x, y, + null); // same bands + + if (src.getSampleModel () instanceof ComponentSampleModel + && dest.getSampleModel () instanceof ComponentSampleModel) + // Refer to ComponentDataBlitOp for optimized data blitting: + ComponentDataBlitOp.INSTANCE.filter(src, dest); + + else + { + // slower path + int samples[] = src.getPixels (x, y, w, h, (int [])null); + dest.setPixels (x, y, w, h, samples); + } + return dest; + } + + public Graphics2D createGraphics() + { + GraphicsEnvironment env; + env = GraphicsEnvironment.getLocalGraphicsEnvironment (); + return env.createGraphics (this); + } + + public void flush() + { + } + + public WritableRaster getAlphaRaster() + { + return colorModel.getAlphaRaster(raster); + } + + public ColorModel getColorModel() + { + return colorModel; + } + + public Raster getData() + { + return copyData(null); + /* TODO: this might be optimized by returning the same + raster (not writable) as long as image data doesn't change. */ + } + + public Raster getData(Rectangle rectangle) + { + WritableRaster dest = + raster.createCompatibleWritableRaster(rectangle); + return copyData(dest); + } + + public Graphics getGraphics() + { + return createGraphics(); + } + + public int getHeight() + { + return raster.getHeight(); + } + + public int getHeight(ImageObserver imageobserver) + { + return getHeight(); + } + + public int getMinTileX() + { + return 0; + } + + public int getMinTileY() + { + return 0; + } + + public int getMinX() + { + return 0; + } + + public int getMinY() + { + return 0; + } + + public int getNumXTiles() + { + return 1; + } + + public int getNumYTiles() + { + return 1; + } + + /** + * Returns the value of the specified property, or + * {@link Image#UndefinedProperty} if the property is not defined. + * + * @param string the property key (<code>null</code> not permitted). + * + * @return The property value. + * + * @throws NullPointerException if <code>string</code> is <code>null</code>. + */ + public Object getProperty(String string) + { + if (string == null) + throw new NullPointerException("The property name cannot be null."); + Object result = Image.UndefinedProperty; + if (properties != null) + { + Object v = properties.get(string); + if (v != null) + result = v; + } + return result; + } + + public Object getProperty(String string, ImageObserver imageobserver) + { + return getProperty(string); + } + + /** + * Returns <code>null</code> always. + * + * @return <code>null</code> always. + */ + public String[] getPropertyNames() + { + // This method should always return null, see: + // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4640609 + return null; + } + + public int getRGB(int x, int y) + { + Object rgbElem = raster.getDataElements(x, y, null); + return colorModel.getRGB(rgbElem); + } + + public int[] getRGB(int startX, int startY, int w, int h, int[] rgbArray, + int offset, int scanlineStride) + { + if (rgbArray == null) + { + /* + 000000000000000000 + 00000[#######----- [ = start + -----########----- ] = end + -----#######]00000 + 000000000000000000 + */ + int size = (h-1)*scanlineStride + w; + rgbArray = new int[size]; + } + + int endX = startX + w; + int endY = startY + h; + + /* *TODO*: + Opportunity for optimization by examining color models... + + Perhaps wrap the rgbArray up in a WritableRaster with packed + sRGB color model and perform optimized rendering into the + array. */ + + Object rgbElem = null; + for (int y=startY; y<endY; y++) + { + int xoffset = offset; + for (int x=startX; x<endX; x++) + { + int rgb; + rgbElem = raster.getDataElements(x, y, rgbElem); + rgb = colorModel.getRGB(rgbElem); + rgbArray[xoffset++] = rgb; + } + offset += scanlineStride; + } + return rgbArray; + } + + public WritableRaster getRaster() + { + return raster; + } + + public SampleModel getSampleModel() + { + return raster.getSampleModel(); + } + + public ImageProducer getSource() + { + return new ImageProducer() + { + Vector<ImageConsumer> consumers = new Vector<ImageConsumer>(); + + public void addConsumer(ImageConsumer ic) + { + if(!consumers.contains(ic)) + consumers.add(ic); + } + + public boolean isConsumer(ImageConsumer ic) + { + return consumers.contains(ic); + } + + public void removeConsumer(ImageConsumer ic) + { + consumers.remove(ic); + } + + public void startProduction(ImageConsumer ic) + { + int x = 0; + int y = 0; + int width = getWidth(); + int height = getHeight(); + int stride = width; + int offset = 0; + int[] pixels = getRGB(x, y, + width, height, + (int[])null, offset, stride); + // We already convert the color to RGB in the getRGB call, so + // we pass a simple RGB color model to the consumers. + ColorModel model = new DirectColorModel(32, 0xff0000, 0xff00, 0xff, + 0xff000000); + + consumers.add(ic); + + for(int i = 0; i < consumers.size(); i++) + { + ImageConsumer c = consumers.elementAt(i); + c.setHints(ImageConsumer.SINGLEPASS); + c.setDimensions(getWidth(), getHeight()); + c.setPixels(x, y, width, height, model, pixels, offset, stride); + c.imageComplete(ImageConsumer.STATICIMAGEDONE); + } + } + + public void requestTopDownLeftRightResend(ImageConsumer ic) + { + startProduction(ic); + } + + }; + } + + public Vector<RenderedImage> getSources() + { + return null; + } + + public BufferedImage getSubimage(int x, int y, int w, int h) + { + WritableRaster subRaster = + getRaster().createWritableChild(x, y, w, h, 0, 0, null); + + return new BufferedImage(getColorModel(), subRaster, isPremultiplied, + properties); + } + + public Raster getTile(int tileX, int tileY) + { + return getWritableTile(tileX, tileY); + } + + public int getTileGridXOffset() + { + return 0; // according to javadocs + } + + public int getTileGridYOffset() + { + return 0; // according to javadocs + } + + public int getTileHeight() + { + return getHeight(); // image is one big tile + } + + public int getTileWidth() + { + return getWidth(); // image is one big tile + } + + public int getType() + { + return type; + } + + public int getWidth() + { + return raster.getWidth(); + } + + public int getWidth(ImageObserver imageobserver) + { + return getWidth(); + } + + public WritableRaster getWritableTile(int tileX, int tileY) + { + isTileWritable(tileX, tileY); // for exception + return raster; + } + + private static final Point[] tileIndices = { new Point() }; + + public Point[] getWritableTileIndices() + { + return tileIndices; + } + + public boolean hasTileWriters() + { + return true; + } + + public boolean isAlphaPremultiplied() + { + return isPremultiplied; + } + + public boolean isTileWritable(int tileX, int tileY) + { + if ((tileX != 0) || (tileY != 0)) + throw new ArrayIndexOutOfBoundsException("only tile is (0,0)"); + return true; + } + + public void releaseWritableTile(int tileX, int tileY) + { + isTileWritable(tileX, tileY); // for exception + } + + //public void removeTileObserver(TileObserver tileobserver) {} + + public void setData(Raster src) + { + int x = src.getMinX(); + int y = src.getMinY(); + int w = src.getWidth(); + int h = src.getHeight(); + + // create a dest child that has the right bounds... + WritableRaster dest = + raster.createWritableChild(x, y, w, h, x, y, null); + + if (src.getSampleModel () instanceof ComponentSampleModel + && dest.getSampleModel () instanceof ComponentSampleModel) + + // Refer to ComponentDataBlitOp for optimized data blitting: + ComponentDataBlitOp.INSTANCE.filter(src, dest); + else + { + // slower path + int samples[] = src.getPixels (x, y, w, h, (int [])null); + dest.setPixels (x, y, w, h, samples); + } + } + + public void setRGB(int x, int y, int argb) + { + Object rgbElem = colorModel.getDataElements(argb, null); + raster.setDataElements(x, y, rgbElem); + } + + public void setRGB(int startX, int startY, int w, int h, + int[] argbArray, int offset, int scanlineStride) + { + int endX = startX + w; + int endY = startY + h; + + Object rgbElem = null; + for (int y=startY; y<endY; y++) + { + int xoffset = offset; + for (int x=startX; x<endX; x++) + { + int argb = argbArray[xoffset++]; + rgbElem = colorModel.getDataElements(argb, rgbElem); + raster.setDataElements(x, y, rgbElem); + } + offset += scanlineStride; + } + } + + public String toString() + { + CPStringBuilder buf; + + buf = new CPStringBuilder(/* estimated length */ 120); + buf.append("BufferedImage@"); + buf.append(Integer.toHexString(hashCode())); + buf.append(": type="); + buf.append(type); + buf.append(' '); + buf.append(colorModel); + buf.append(' '); + buf.append(raster); + + return buf.toString(); + } + + + /** + * Adds a tile observer. If the observer is already present, it receives + * multiple notifications. + * + * @param to The TileObserver to add. + */ + public void addTileObserver (TileObserver to) + { + if (tileObservers == null) + tileObservers = new Vector<TileObserver>(); + + tileObservers.add (to); + } + + /** + * Removes a tile observer. If the observer was not registered, + * nothing happens. If the observer was registered for multiple + * notifications, it is now registered for one fewer notification. + * + * @param to The TileObserver to remove. + */ + public void removeTileObserver (TileObserver to) + { + if (tileObservers == null) + return; + + tileObservers.remove (to); + } + + /** + * Return the transparency type. + * + * @return One of {@link #OPAQUE}, {@link #BITMASK}, or {@link #TRANSLUCENT}. + * @see Transparency#getTransparency() + * @since 1.5 + */ + public int getTransparency() + { + return colorModel.getTransparency(); + } +} diff --git a/libjava/classpath/java/awt/image/BufferedImageFilter.java b/libjava/classpath/java/awt/image/BufferedImageFilter.java new file mode 100644 index 000000000..04b6672c6 --- /dev/null +++ b/libjava/classpath/java/awt/image/BufferedImageFilter.java @@ -0,0 +1,110 @@ +/* Copyright (C) 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import java.awt.Point; + +/** + * The BufferedImageFilter class wraps BufferedImageOp objects in a Filter. + * + * When pixels are pushed through the filter, we create a BufferedImage, + * apply the BufferedImageOp, and pass the filtered pixels to the base class. + * + * @author jlquinn@optonline.net + */ +public class BufferedImageFilter extends ImageFilter implements Cloneable +{ + private BufferedImageOp op; + + /** + * + */ + public BufferedImageFilter(BufferedImageOp op) + { + super(); + if (op == null) + throw new NullPointerException("BufferedImageFilter null" + + " op in constructor"); + this.op = op; + } + + /** + * @return Returns the contained BufferedImageOp. + */ + public BufferedImageOp getBufferedImageOp() + { + return op; + } + + // FIXME: Definitely not sure this is the right thing. I'm not sure how to + // create a compatible sample model that incorporates scansize != w. I + // asume off is handled by the db itself. + public void setPixels(int x, int y, int w, int h, ColorModel model, + byte[] pixels, int off, int scansize) + { + // Create an input BufferedImage + DataBufferByte db = new DataBufferByte(pixels, scansize * h + off, off); + SampleModel sm = model.createCompatibleSampleModel(scansize, h); + WritableRaster wr = new WritableRaster(sm, db, new Point(0, 0)); + BufferedImage in = + new BufferedImage(model, wr, model.isAlphaPremultiplied(), null); + BufferedImage out = op.createCompatibleDestImage(in, model); + op.filter(in, out); + DataBuffer dbout = out.getRaster().getDataBuffer(); + super.setPixels(0, 0, w, h, model, ((DataBufferByte)dbout).getData(), 0, + scansize); + } + + // FIXME: Definitely not sure this is the right thing. I'm not sure how + // to create a compatible sample model that incorporates + // scansize != w. I asume off is handled by the db itself. + public void setPixels(int x, int y, int w, int h, ColorModel model, + int[] pixels, int off, int scansize) + { + // Create an input BufferedImage + DataBufferInt db = new DataBufferInt(pixels, scansize * h + off, off); + SampleModel sm = model.createCompatibleSampleModel(scansize, h); + WritableRaster wr = new WritableRaster(sm, db, new Point(0, 0)); + BufferedImage in = + new BufferedImage(model, wr, model.isAlphaPremultiplied(), null); + BufferedImage out = op.createCompatibleDestImage(in, model); + op.filter(in, out); + DataBuffer dbout = out.getRaster().getDataBuffer(); + super.setPixels(0, 0, w, h, model, ((DataBufferInt)dbout).getData(), 0, + scansize); + } +} diff --git a/libjava/classpath/java/awt/image/BufferedImageOp.java b/libjava/classpath/java/awt/image/BufferedImageOp.java new file mode 100644 index 000000000..1aba4bb09 --- /dev/null +++ b/libjava/classpath/java/awt/image/BufferedImageOp.java @@ -0,0 +1,107 @@ +/* BufferedImageOp.java -- + Copyright (C) 2002, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; + +/** + * An operation that is performed on one <code>BufferedImage</code> (the + * source) producing a new <code>BufferedImage</code> (the destination). + */ +public interface BufferedImageOp +{ + /** + * Performs an operation on the source image, returning the result in a + * <code>BufferedImage</code>. If <code>dest</code> is <code>null</code>, a + * new <code>BufferedImage</code> will be created by calling the + * {@link #createCompatibleDestImage} method. If <code>dest</code> + * is not <code>null</code>, the result is written to <code>dest</code> then + * returned (this avoids creating a new <code>BufferedImage</code> each + * time this method is called). + * + * @param src the source image. + * @param dst the destination image (<code>null</code> permitted). + * + * @return The filterd image. + */ + BufferedImage filter(BufferedImage src, BufferedImage dst); + + /** + * Returns the bounds of the destination image on the basis of this + * <code>BufferedImageOp</code> being applied to the specified source image. + * + * @param src the source image. + * + * @return The destination bounds. + */ + Rectangle2D getBounds2D(BufferedImage src); + + /** + * Returns a new <code>BufferedImage</code> that can be used by this + * <code>BufferedImageOp</code> as the destination image when filtering + * the specified source image. + * + * @param src the source image. + * @param dstCM the color model for the destination image. + * + * @return A new image that can be used as the destination image. + */ + BufferedImage createCompatibleDestImage(BufferedImage src, ColorModel dstCM); + + /** + * Returns the point on the destination image that corresponds to the given + * point on the source image. + * + * @param src the source point. + * @param dst the destination point (<code>null</code> permitted). + * + * @return The destination point. + */ + Point2D getPoint2D(Point2D src, Point2D dst); + + /** + * Returns the rendering hints for this operation. + * + * @return The rendering hints. + */ + RenderingHints getRenderingHints(); + +} diff --git a/libjava/classpath/java/awt/image/ByteLookupTable.java b/libjava/classpath/java/awt/image/ByteLookupTable.java new file mode 100644 index 000000000..89804c55b --- /dev/null +++ b/libjava/classpath/java/awt/image/ByteLookupTable.java @@ -0,0 +1,175 @@ +/* ByteLookupTable.java -- Java class for a pixel translation table. + Copyright (C) 2004, 2005, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * ByteLookupTable represents translation arrays for pixel values. It wraps + * one or more data arrays for each layer (or component) in an image, such as + * Alpha, R, G, and B. When doing translation, the offset is subtracted from + * the pixel values to allow a subset of an array to be used. + * + * @author Jerry Quinn (jlquinn@optonline.net) + * @version 1.0 + */ +public class ByteLookupTable extends LookupTable +{ + // Array of translation tables. + private byte data[][]; + + /** + * Creates a new <code>ByteLookupTable</code> instance. + * + * Offset is subtracted from pixel values when looking up in the translation + * tables. If data.length is one, the same table is applied to all pixel + * components. + * + * @param offset Offset to be subtracted. + * @param data Array of lookup tables (<code>null</code> not permitted). + * @exception IllegalArgumentException if offset < 0 or data.length < 1. + */ + public ByteLookupTable(int offset, byte[][] data) + throws IllegalArgumentException + { + super(offset, data.length); + + // tests show that Sun's implementation creates a new array to store the + // references from the incoming 'data' array - not sure why, but we'll + // match that behaviour just in case it matters... + this.data = new byte[data.length][]; + for (int i = 0; i < data.length; i++) + this.data[i] = data[i]; + } + + /** + * Creates a new <code>ByteLookupTable</code> instance. + * + * Offset is subtracted from pixel values when looking up in the translation + * table. The same table is applied to all pixel components. + * + * @param offset Offset to be subtracted. + * @param data Lookup table for all components (<code>null</code> not + * permitted). + * @exception IllegalArgumentException if offset < 0. + */ + public ByteLookupTable(int offset, byte[] data) + throws IllegalArgumentException + { + super(offset, 1); + if (data == null) + throw new NullPointerException("Null 'data' argument."); + this.data = new byte[][] {data}; + } + + /** + * Return the lookup tables. + * + * @return the tables + */ + public final byte[][] getTable() + { + return data; + } + + /** + * Return translated values for a pixel. + * + * For each value in the pixel src, use the value minus offset as an index + * in the component array and copy the value there to the output for the + * component. If dest is null, the output is a new array, otherwise the + * translated values are written to dest. Dest can be the same array as + * src. + * + * For example, if the pixel src is [2, 4, 3], and offset is 1, the output + * is [comp1[1], comp2[3], comp3[2]], where comp1, comp2, and comp3 are the + * translation arrays. + * + * @param src Component values of a pixel. + * @param dst Destination array for values, or null. + * @return Translated values for the pixel. + */ + public int[] lookupPixel(int[] src, int[] dst) + throws ArrayIndexOutOfBoundsException + { + if (dst == null) + dst = new int[src.length]; + + if (data.length == 1) + for (int i=0; i < src.length; i++) + dst[i] = data[0][src[i] - offset]; + else + for (int i=0; i < src.length; i++) + dst[i] = data[i][src[i] - offset]; + + return dst; + } + + /** + * Return translated values for a pixel. + * + * For each value in the pixel src, use the value minus offset as an index + * in the component array and copy the value there to the output for the + * component. If dest is null, the output is a new array, otherwise the + * translated values are written to dest. Dest can be the same array as + * src. + * + * For example, if the pixel src is [2, 4, 3], and offset is 1, the output + * is [comp1[1], comp2[3], comp3[2]], where comp1, comp2, and comp3 are the + * translation arrays. + * + * @param src Component values of a pixel. + * @param dst Destination array for values, or null. + * @return Translated values for the pixel. + */ + public byte[] lookupPixel(byte[] src, byte[] dst) + throws ArrayIndexOutOfBoundsException + { + if (dst == null) + dst = new byte[src.length]; + + if (data.length == 1) + for (int i=0; i < src.length; i++) + dst[i] = data[0][((int)src[i]) - offset]; + else + for (int i=0; i < src.length; i++) + dst[i] = data[i][((int)src[i]) - offset]; + + return dst; + + } +} diff --git a/libjava/classpath/java/awt/image/ColorConvertOp.java b/libjava/classpath/java/awt/image/ColorConvertOp.java new file mode 100644 index 000000000..b1d6f857d --- /dev/null +++ b/libjava/classpath/java/awt/image/ColorConvertOp.java @@ -0,0 +1,537 @@ +/* ColorConvertOp.java -- + Copyright (C) 2004, 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; + +import java.awt.Graphics2D; +import java.awt.Point; +import java.awt.RenderingHints; +import java.awt.color.ColorSpace; +import java.awt.color.ICC_ColorSpace; +import java.awt.color.ICC_Profile; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; + +/** + * ColorConvertOp is a filter for converting images or rasters between + * colorspaces, either through a sequence of colorspaces or just from source to + * destination. + * + * Color conversion is done on the color components without alpha. Thus + * if a BufferedImage has alpha premultiplied, this is divided out before + * color conversion, and premultiplication applied if the destination + * requires it. + * + * Color rendering and dithering hints may be applied if specified. This is + * likely platform-dependent. + * + * @author jlquinn@optonline.net + */ +public class ColorConvertOp implements BufferedImageOp, RasterOp +{ + private RenderingHints hints; + private ICC_Profile[] profiles = null; + private ColorSpace[] spaces; + + + /** + * Convert a BufferedImage through a ColorSpace. + * + * Objects created with this constructor can be used to convert + * BufferedImage's to a destination ColorSpace. Attempts to convert Rasters + * with this constructor will result in an IllegalArgumentException when the + * filter(Raster, WritableRaster) method is called. + * + * @param cspace The target color space. + * @param hints Rendering hints to use in conversion, if any (may be null) + * @throws NullPointerException if the ColorSpace is null. + */ + public ColorConvertOp(ColorSpace cspace, RenderingHints hints) + { + if (cspace == null) + throw new NullPointerException(); + spaces = new ColorSpace[]{cspace}; + this.hints = hints; + } + + /** + * Convert from a source colorspace to a destination colorspace. + * + * This constructor takes two ColorSpace arguments as the source and + * destination color spaces. It is usually used with the + * filter(Raster, WritableRaster) method, in which case the source colorspace + * is assumed to correspond to the source Raster, and the destination + * colorspace with the destination Raster. + * + * If used with BufferedImages that do not match the source or destination + * colorspaces specified here, there is an implicit conversion from the + * source image to the source ColorSpace, or the destination ColorSpace to + * the destination image. + * + * @param srcCspace The source ColorSpace. + * @param dstCspace The destination ColorSpace. + * @param hints Rendering hints to use in conversion, if any (may be null). + * @throws NullPointerException if any ColorSpace is null. + */ + public ColorConvertOp(ColorSpace srcCspace, ColorSpace dstCspace, + RenderingHints hints) + { + if (srcCspace == null || dstCspace == null) + throw new NullPointerException(); + spaces = new ColorSpace[]{srcCspace, dstCspace}; + this.hints = hints; + } + + /** + * Convert from a source colorspace to a destinatino colorspace. + * + * This constructor builds a ColorConvertOp from an array of ICC_Profiles. + * The source will be converted through the sequence of color spaces + * defined by the profiles. If the sequence of profiles doesn't give a + * well-defined conversion, an IllegalArgumentException is thrown. + * + * If used with BufferedImages that do not match the source or destination + * colorspaces specified here, there is an implicit conversion from the + * source image to the source ColorSpace, or the destination ColorSpace to + * the destination image. + * + * For Rasters, the first and last profiles must have the same number of + * bands as the source and destination Rasters, respectively. If this is + * not the case, or there fewer than 2 profiles, an IllegalArgumentException + * will be thrown. + * + * @param profiles An array of ICC_Profile's to convert through. + * @param hints Rendering hints to use in conversion, if any (may be null). + * @throws NullPointerException if the profile array is null. + * @throws IllegalArgumentException if the array is not a well-defined + * conversion. + */ + public ColorConvertOp(ICC_Profile[] profiles, RenderingHints hints) + { + if (profiles == null) + throw new NullPointerException(); + + this.hints = hints; + this.profiles = profiles; + + // Create colorspace array with space for src and dest colorspace + // Note that the ICC_ColorSpace constructor will throw an + // IllegalArgumentException if the profile is invalid; thus we check + // for a "well defined conversion" + spaces = new ColorSpace[profiles.length]; + for (int i = 0; i < profiles.length; i++) + spaces[i] = new ICC_ColorSpace(profiles[i]); + } + + /** + * Convert from source color space to destination color space. + * + * Only valid for BufferedImage objects, this Op converts from the source + * image's color space to the destination image's color space. + * + * The destination in the filter(BufferedImage, BufferedImage) method cannot + * be null for this operation, and it also cannot be used with the + * filter(Raster, WritableRaster) method. + * + * @param hints Rendering hints to use in conversion, if any (may be null). + */ + public ColorConvertOp(RenderingHints hints) + { + this.hints = hints; + spaces = new ColorSpace[0]; + } + + /** + * Converts the source image using the conversion path specified in the + * constructor. The resulting image is stored in the destination image if one + * is provided; otherwise a new BufferedImage is created and returned. + * + * The source and destination BufferedImage (if one is supplied) must have + * the same dimensions. + * + * @param src The source image. + * @param dst The destination image. + * @throws IllegalArgumentException if the rasters and/or color spaces are + * incompatible. + * @return The transformed image. + */ + public final BufferedImage filter(BufferedImage src, BufferedImage dst) + { + // TODO: The plan is to create a scanline buffer for intermediate buffers. + // For now we just suck it up and create intermediate buffers. + + if (dst == null && spaces.length == 0) + throw new IllegalArgumentException("Not enough color space information " + + "to complete conversion."); + + if (dst != null + && (src.getHeight() != dst.getHeight() || src.getWidth() != dst.getWidth())) + throw new IllegalArgumentException("Source and destination images have " + + "different dimensions"); + + // Make sure input isn't premultiplied by alpha + if (src.isAlphaPremultiplied()) + { + BufferedImage tmp = createCompatibleDestImage(src, src.getColorModel()); + copyimage(src, tmp); + tmp.coerceData(false); + src = tmp; + } + + // Convert through defined intermediate conversions + BufferedImage tmp; + for (int i = 0; i < spaces.length; i++) + { + if (src.getColorModel().getColorSpace().getType() != spaces[i].getType()) + { + tmp = createCompatibleDestImage(src, + createCompatibleColorModel(src, + spaces[i])); + copyimage(src, tmp); + src = tmp; + } + } + + // No implicit conversion to destination type needed; return result from the + // last intermediate conversions (which was left in src) + if (dst == null) + dst = src; + + // Implicit conversion to destination image's color space + else + copyimage(src, dst); + + return dst; + } + + /** + * Converts the source raster using the conversion path specified in the + * constructor. The resulting raster is stored in the destination raster if + * one is provided; otherwise a new WritableRaster is created and returned. + * + * This operation is not valid with every constructor of this class; see + * the constructors for details. Further, the source raster must have the + * same number of bands as the source ColorSpace, and the destination raster + * must have the same number of bands as the destination ColorSpace. + * + * The source and destination raster (if one is supplied) must also have the + * same dimensions. + * + * @param src The source raster. + * @param dest The destination raster. + * @throws IllegalArgumentException if the rasters and/or color spaces are + * incompatible. + * @return The transformed raster. + */ + public final WritableRaster filter(Raster src, WritableRaster dest) + { + // Various checks to ensure that the rasters and color spaces are compatible + if (spaces.length < 2) + throw new IllegalArgumentException("Not enough information about " + + "source and destination colorspaces."); + + if (spaces[0].getNumComponents() != src.getNumBands() + || (dest != null && spaces[spaces.length - 1].getNumComponents() != dest.getNumBands())) + throw new IllegalArgumentException("Source or destination raster " + + "contains the wrong number of bands."); + + if (dest != null + && (src.getHeight() != dest.getHeight() || src.getWidth() != dest.getWidth())) + throw new IllegalArgumentException("Source and destination rasters " + + "have different dimensions"); + + // Need to iterate through each color space. + // spaces[0] corresponds to the ColorSpace of the source raster, and + // spaces[spaces.length - 1] corresponds to the ColorSpace of the + // destination, with any number (or zero) of intermediate conversions. + + for (int i = 0; i < spaces.length - 2; i++) + { + WritableRaster tmp = createCompatibleDestRaster(src, spaces[i + 1], + false, + src.getTransferType()); + copyraster(src, spaces[i], tmp, spaces[i + 1]); + src = tmp; + } + + // The last conversion is done outside of the loop so that we can + // use the dest raster supplied, instead of creating our own temp raster + if (dest == null) + dest = createCompatibleDestRaster(src, spaces[spaces.length - 1], false, + DataBuffer.TYPE_BYTE); + copyraster(src, spaces[spaces.length - 2], dest, spaces[spaces.length - 1]); + + return dest; + } + + /** + * Creates an empty BufferedImage with the size equal to the source and the + * correct number of bands for the conversion defined in this Op. The newly + * created image is created with the specified ColorModel, or if no ColorModel + * is supplied, an appropriate one is chosen. + * + * @param src The source image. + * @param dstCM A color model for the destination image (may be null). + * @throws IllegalArgumentException if an appropriate colormodel cannot be + * chosen with the information given. + * @return The new compatible destination image. + */ + public BufferedImage createCompatibleDestImage(BufferedImage src, + ColorModel dstCM) + { + if (dstCM == null && spaces.length == 0) + throw new IllegalArgumentException("Don't know the destination " + + "colormodel"); + + if (dstCM == null) + { + dstCM = createCompatibleColorModel(src, spaces[spaces.length - 1]); + } + + return new BufferedImage(dstCM, + createCompatibleDestRaster(src.getRaster(), + dstCM.getColorSpace(), + src.getColorModel().hasAlpha, + dstCM.getTransferType()), + src.isPremultiplied, null); + } + + /** + * Creates a new WritableRaster with the size equal to the source and the + * correct number of bands. + * + * Note, the new Raster will always use a BYTE storage size, regardless of + * the color model or defined destination; this is for compatibility with + * the reference implementation. + * + * @param src The source Raster. + * @throws IllegalArgumentException if there isn't enough colorspace + * information to create a compatible Raster. + * @return The new compatible destination raster. + */ + public WritableRaster createCompatibleDestRaster(Raster src) + { + if (spaces.length < 2) + throw new IllegalArgumentException("Not enough destination colorspace " + + "information"); + + // Create a new raster with the last ColorSpace in the conversion + // chain, and with no alpha (implied) + return createCompatibleDestRaster(src, spaces[spaces.length-1], false, + DataBuffer.TYPE_BYTE); + } + + /** + * Returns the array of ICC_Profiles used to create this Op, or null if the + * Op was created using ColorSpace arguments. + * + * @return The array of ICC_Profiles, or null. + */ + public final ICC_Profile[] getICC_Profiles() + { + return profiles; + } + + /** + * Returns the rendering hints for this op. + * + * @return The rendering hints for this Op, or null. + */ + public final RenderingHints getRenderingHints() + { + return hints; + } + + /** + * Returns the corresponding destination point for a source point. + * Because this is not a geometric operation, the destination and source + * points will be identical. + * + * @param src The source point. + * @param dst The transformed destination point. + * @return The transformed destination point. + */ + public final Point2D getPoint2D(Point2D src, Point2D dst) + { + if (dst == null) + return (Point2D)src.clone(); + + dst.setLocation(src); + return dst; + } + + /** + * Returns the corresponding destination boundary of a source boundary. + * Because this is not a geometric operation, the destination and source + * boundaries will be identical. + * + * @param src The source boundary. + * @return The boundaries of the destination. + */ + public final Rectangle2D getBounds2D(BufferedImage src) + { + return src.getRaster().getBounds(); + } + + /** + * Returns the corresponding destination boundary of a source boundary. + * Because this is not a geometric operation, the destination and source + * boundaries will be identical. + * + * @param src The source boundary. + * @return The boundaries of the destination. + */ + public final Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + /** + * Copy a source image to a destination image, respecting their colorspaces + * and performing colorspace conversions if necessary. + * + * @param src The source image. + * @param dst The destination image. + */ + private void copyimage(BufferedImage src, BufferedImage dst) + { + // This is done using Graphics2D in order to respect the rendering hints. + Graphics2D gg = dst.createGraphics(); + + // If no hints are set there is no need to call + // setRenderingHints on the Graphics2D object. + if (hints != null) + gg.setRenderingHints(hints); + + gg.drawImage(src, 0, 0, null); + gg.dispose(); + } + + /** + * Copy a source raster to a destination raster, performing a colorspace + * conversion between the two. The conversion will respect the + * KEY_COLOR_RENDERING rendering hint if one is present. + * + * @param src The source raster. + * @param scs The colorspace of the source raster. + * @dst The destination raster. + * @dcs The colorspace of the destination raster. + */ + private void copyraster(Raster src, ColorSpace scs, WritableRaster dst, ColorSpace dcs) + { + float[] sbuf = new float[src.getNumBands()]; + + if (hints != null + && hints.get(RenderingHints.KEY_COLOR_RENDERING) == + RenderingHints.VALUE_COLOR_RENDER_QUALITY) + { + // use cie for accuracy + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + dst.setPixel(x, y, + dcs.fromCIEXYZ(scs.toCIEXYZ(src.getPixel(x, y, sbuf)))); + } + else + { + // use rgb - it's probably faster + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + dst.setPixel(x, y, + dcs.fromRGB(scs.toRGB(src.getPixel(x, y, sbuf)))); + } + } + + /** + * This method creates a color model with the same colorspace and alpha + * settings as the source image. The created color model will always be a + * ComponentColorModel and have a BYTE transfer type. + * + * @param img The source image. + * @param cs The ColorSpace to use. + * @return A color model compatible with the source image. + */ + private ColorModel createCompatibleColorModel(BufferedImage img, ColorSpace cs) + { + // The choice of ComponentColorModel and DataBuffer.TYPE_BYTE is based on + // Mauve testing of the reference implementation. + return new ComponentColorModel(cs, + img.getColorModel().hasAlpha(), + img.isAlphaPremultiplied(), + img.getColorModel().getTransparency(), + DataBuffer.TYPE_BYTE); + } + + /** + * This method creates a compatible Raster, given a source raster, colorspace, + * alpha value, and transfer type. + * + * @param src The source raster. + * @param cs The ColorSpace to use. + * @param hasAlpha Whether the raster should include a component for an alpha. + * @param transferType The size of a single data element. + * @return A compatible WritableRaster. + */ + private WritableRaster createCompatibleDestRaster(Raster src, ColorSpace cs, + boolean hasAlpha, + int transferType) + { + // The use of a PixelInterleavedSampleModel weas determined using mauve + // tests, based on the reference implementation + + int numComponents = cs.getNumComponents(); + if (hasAlpha) + numComponents++; + + int[] offsets = new int[numComponents]; + for (int i = 0; i < offsets.length; i++) + offsets[i] = i; + + DataBuffer db = Buffers.createBuffer(transferType, + src.getWidth() * src.getHeight() * numComponents, + 1); + return new WritableRaster(new PixelInterleavedSampleModel(transferType, + src.getWidth(), + src.getHeight(), + numComponents, + numComponents * src.getWidth(), + offsets), + db, new Point(src.getMinX(), src.getMinY())); + } +} diff --git a/libjava/classpath/java/awt/image/ColorModel.java b/libjava/classpath/java/awt/image/ColorModel.java new file mode 100644 index 000000000..ede9e31d8 --- /dev/null +++ b/libjava/classpath/java/awt/image/ColorModel.java @@ -0,0 +1,794 @@ +/* ColorModel.java -- + Copyright (C) 1999, 2000, 2002, 2003, 2004, 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; + +import java.awt.Point; +import java.awt.Transparency; +import java.awt.color.ColorSpace; +import java.util.Arrays; + +/** + * A color model operates with colors in several formats: + * + * <ul> + * <li>normalized: component samples are in range [0.0, 1.0].</li> + * + * <li>color model pixel value: all the color component samples for a + * sigle pixel packed/encoded in a way natural for the color + * model.</li> + * + * <li>color model pixel int value: only makes sense if the natural + * encoding of a single pixel can fit in a single int value.</li> + * + * <li>array of transferType containing a single pixel: the pixel is + * encoded in the natural way of the color model, taking up as many + * array elements as needed.</li> + * + * <li>sRGB pixel int value: a pixel in sRGB color space, encoded in + * default 0xAARRGGBB format, assumed not alpha premultiplied.</li> + * + * <li>single [0, 255] scaled int samples from default sRGB color + * space. These are always assumed to be alpha non-premultiplied.</li> + * + * <li>arrays of unnormalized component samples of single pixel: these + * samples are scaled and multiplied according to the color model, but + * is otherwise not packed or encoded. Each element of the array is one + * separate component sample. The color model only operate on the + * components from one pixel at a time, but using offsets, allows + * manipulation of arrays that contain the components of more than one + * pixel.</li> + * + * </ul> + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @author C. Brian Jones (cbj@gnu.org) + */ +public abstract class ColorModel implements Transparency +{ + protected int pixel_bits; + protected int transferType; + + int[] bits; + ColorSpace cspace; + int transparency; + boolean hasAlpha; + boolean isAlphaPremultiplied; + + /** + * The standard color model for the common sRGB. + */ + private static final ColorModel S_RGB_MODEL = new SRGBColorModel(); + + static int[] nArray(int value, int times) + { + int[] array = new int[times]; + java.util.Arrays.fill(array, value); + return array; + } + + static byte[] nArray(byte value, int times) + { + byte[] array = new byte[times]; + java.util.Arrays.fill(array, value); + return array; + } + + /** + * Constructs the default color model. The default color model + * can be obtained by calling <code>getRGBdefault</code> of this + * class. + * @param bits the number of bits wide used for bit size of pixel values + */ + public ColorModel(int bits) + { + this(bits * 4, // total bits, sRGB, four channels + nArray(bits, 4), // bits for each channel + ColorSpace.getInstance(ColorSpace.CS_sRGB), // sRGB + true, // has alpha + false, // not premultiplied + TRANSLUCENT, + Buffers.smallestAppropriateTransferType(bits * 4)); + } + + /** + * Constructs a ColorModel that translates pixel values to + * color/alpha components. + * + * @exception IllegalArgumentException If the length of the bit array is less + * than the number of color or alpha components in this ColorModel, or if the + * transparency is not a valid value, or if the sum of the number of bits in + * bits is less than 1 or if any of the elements in bits is less than 0. + */ + protected ColorModel(int pixel_bits, int[] bits, ColorSpace cspace, + boolean hasAlpha, boolean isAlphaPremultiplied, + int transparency, int transferType) + { + int bits_sum = 0; + for (int i = 0; i < bits.length; i++) + { + if (bits [i] < 0) + throw new IllegalArgumentException (); + + bits_sum |= bits [i]; + } + + if ((bits.length < cspace.getNumComponents()) + || (bits_sum < 1)) + throw new IllegalArgumentException (); + + this.pixel_bits = pixel_bits; + this.bits = bits; + this.cspace = cspace; + this.hasAlpha = hasAlpha; + this.isAlphaPremultiplied = isAlphaPremultiplied; + this.transparency = transparency; + this.transferType = transferType; + } + + public void finalize() + { + // Do nothing here. + } + + /** + * Returns the default color model which in Sun's case is an instance + * of <code>DirectColorModel</code>. + */ + public static ColorModel getRGBdefault() + { + return S_RGB_MODEL; + } + + public final boolean hasAlpha() + { + return hasAlpha; + } + + public final boolean isAlphaPremultiplied() + { + return isAlphaPremultiplied; + } + + /** + * Get get number of bits wide used for the bit size of pixel values + */ + public int getPixelSize() + { + return pixel_bits; + } + + public int getComponentSize(int componentIdx) + { + return bits[componentIdx]; + } + + public int[] getComponentSize() + { + return bits; + } + + public int getTransparency() + { + return transparency; + } + + public int getNumComponents() + { + return getNumColorComponents() + (hasAlpha ? 1 : 0); + } + + public int getNumColorComponents() + { + return cspace.getNumComponents(); + } + + /** + * Converts pixel value to sRGB and extract red int sample scaled + * to range [0, 255]. + * + * @param pixel pixel value that will be interpreted according to + * the color model, (assumed alpha premultiplied if color model says + * so.) + * + * @return red sample scaled to range [0, 255], from default color + * space sRGB, alpha non-premultiplied. + */ + public abstract int getRed(int pixel); + + /** + * Converts pixel value to sRGB and extract green int sample + * scaled to range [0, 255]. + * + * @see #getRed(int) + */ + public abstract int getGreen(int pixel); + + /** + * Converts pixel value to sRGB and extract blue int sample + * scaled to range [0, 255]. + * + * @see #getRed(int) + */ + public abstract int getBlue(int pixel); + + /** + * Extract alpha int sample from pixel value, scaled to [0, 255]. + * + * @param pixel pixel value that will be interpreted according to + * the color model. + * + * @return alpha sample, scaled to range [0, 255]. + */ + public abstract int getAlpha(int pixel); + + /** + * Converts a pixel int value of the color space of the color + * model to a sRGB pixel int value. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. + * + * @param pixel pixel value that will be interpreted according to + * the color model. + * + * @return a pixel in sRGB color space, encoded in default + * 0xAARRGGBB format. */ + public int getRGB(int pixel) + { + return + ((getAlpha(pixel) & 0xff) << 24) | + (( getRed(pixel) & 0xff) << 16) | + ((getGreen(pixel) & 0xff) << 8) | + (( getBlue(pixel) & 0xff) << 0); + } + + + /** + * In this color model we know that the whole pixel value will + * always be contained within the first element of the pixel + * array. + */ + final int getPixelFromArray(Object inData) { + DataBuffer data = + Buffers.createBufferFromData(transferType, inData, 1); + Object da = Buffers.getData(data); + + return data.getElem(0); + } + + /** + * Converts pixel in the given array to sRGB and extract blue int + * sample scaled to range [0-255]. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. + * + * @param inData array of transferType containing a single pixel. The + * pixel should be encoded in the natural way of the color model. + */ + public int getRed(Object inData) + { + return getRed(getPixelFromArray(inData)); + } + + /** + * @see #getRed(Object) + */ + public int getGreen(Object inData) + { + return getGreen(getPixelFromArray(inData)); + } + + /** + * @see #getRed(Object) + */ + public int getBlue(Object inData) { + return getBlue(getPixelFromArray(inData)); + } + + /** + * @see #getRed(Object) + */ + public int getAlpha(Object inData) { + return getAlpha(getPixelFromArray(inData)); + } + + /** + * Converts a pixel in the given array of the color space of the + * color model to an sRGB pixel int value. + * + * <p>This method performs the inverse function of + * <code>getDataElements(int rgb, Object pixel)</code>. + * I.e. <code>(rgb == cm.getRGB(cm.getDataElements(rgb, + * null)))</code>. + * + * @param inData array of transferType containing a single pixel. The + * pixel should be encoded in the natural way of the color model. + * + * @return a pixel in sRGB color space, encoded in default + * 0xAARRGGBB format. + * + * @see #getDataElements(int, Object) + */ + public int getRGB(Object inData) + { + return + ((getAlpha(inData) & 0xff) << 24) | + (( getRed(inData) & 0xff) << 16) | + ((getGreen(inData) & 0xff) << 8) | + (( getBlue(inData) & 0xff) << 0); + } + + /** + * Converts an sRGB pixel int value to an array containing a + * single pixel of the color space of the color model. + * + * <p>This method performs the inverse function of + * <code>getRGB(Object inData)</code>. + * + * Outline of conversion process: + * + * <ol> + * + * <li>Convert rgb to normalized [0.0, 1.0] sRGB values.</li> + * + * <li>Convert to color space components using fromRGB in + * ColorSpace.</li> + * + * <li>If color model has alpha and should be premultiplied, + * multiply color space components with alpha value</li> + * + * <li>Scale the components to the correct number of bits.</li> + * + * <li>Arrange the components in the output array</li> + * + * </ol> + * + * @param rgb The color to be converted to dataElements. A pixel + * in sRGB color space, encoded in default 0xAARRGGBB format, + * assumed not alpha premultiplied. + * + * @param pixel to avoid needless creation of arrays, an array to + * use to return the pixel can be given. If null, a suitable array + * will be created. + * + * @return An array of transferType values representing the color, + * in the color model format. The color model defines whether the + * + * @see #getRGB(Object) + */ + public Object getDataElements(int rgb, Object pixel) + { + // subclasses has to implement this method. + throw new UnsupportedOperationException(); + } + + /** + * Fills an array with the unnormalized component samples from a + * pixel value. I.e. decompose the pixel, but not perform any + * color conversion. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. + * + * @param pixel pixel value encoded according to the color model. + * + * @return arrays of unnormalized component samples of single + * pixel. The scale and multiplication state of the samples are + * according to the color model. Each component sample is stored + * as a separate element in the array. + */ + public int[] getComponents(int pixel, int[] components, int offset) + { + // subclasses has to implement this method. + throw new UnsupportedOperationException(); + } + + /** + * Fills an array with the unnormalized component samples from an + * array of transferType containing a single pixel. I.e. decompose + * the pixel, but not perform any color conversion. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. + * + * @param pixel an array of transferType containing a single pixel. The + * pixel should be encoded in the natural way of the color model. If + * this argument is not an array, as expected, a {@link ClassCastException} + * will be thrown. + * @param components an array that will be filled with the color component + * of the pixel. If this is null, a new array will be allocated + * @param offset index into the components array at which the result + * will be stored + * + * @return arrays of unnormalized component samples of single + * pixel. The scale and multiplication state of the samples are + * according to the color model. Each component sample is stored + * as a separate element in the array. + */ + public int[] getComponents(Object pixel, int[] components, int offset) + { + // subclasses has to implement this method. + throw new UnsupportedOperationException(); + } + + /** + * Convert normalized components to unnormalized components. + */ + public int[] getUnnormalizedComponents(float[] normComponents, + int normOffset, + int[] components, + int offset) + { + int numComponents = getNumComponents(); + if (components == null) + { + components = new int[offset + numComponents]; + } + + for (int i=0; i<numComponents; i++) + { + float in = normComponents[normOffset++]; + int out = (int) (in * ((1<<getComponentSize(i)) - 1)); + components[offset++] = out; + } + return components; + } + + /** + * Convert unnormalized components to normalized components. + */ + public float[] getNormalizedComponents(int[] components, + int offset, + float[] normComponents, + int normOffset) + { + int numComponents = getNumComponents(); + if (normComponents == null) + { + normComponents = new float[normOffset + numComponents]; + } + + for (int i=0; i<numComponents; i++) + { + float in = components[offset++]; + float out = in / ((1<<getComponentSize(i)) - 1); + normComponents[normOffset++] = out; + } + return normComponents; + } + + /** + * Convert unnormalized components to normalized components. + * + * @since 1.4 + */ + public float[] getNormalizedComponents (Object pixel, + float[] normComponents, + int normOffset) + { + int[] components = getComponents(pixel, null, 0); + return getNormalizedComponents(components, 0, normComponents, normOffset); + } + + /** + * Converts the unnormalized component samples from an array to a + * pixel value. I.e. composes the pixel from component samples, but + * does not perform any color conversion or scaling of the samples. + * + * This method performs the inverse function of + * <code>getComponents(int pixel, int[] components, + * int offset)</code>. I.e. + * + * <code>(pixel == cm.getDataElement(cm.getComponents(pixel, null, + * 0), 0))</code>. + * + * This method is overriden in subclasses since this abstract class throws + * UnsupportedOperationException(). + * + * @param components Array of unnormalized component samples of single + * pixel. The scale and multiplication state of the samples are according + * to the color model. Each component sample is stored as a separate element + * in the array. + * @param offset Position of the first value of the pixel in components. + * + * @return pixel value encoded according to the color model. + */ + public int getDataElement(int[] components, int offset) + { + // subclasses have to implement this method. + throw new UnsupportedOperationException(); + } + + /** + * Converts the normalized component samples from an array to a pixel + * value. I.e. composes the pixel from component samples, but does not + * perform any color conversion or scaling of the samples. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. The method provided by this abstract + * class converts the components to unnormalized form and returns + * getDataElement(int[], int). + * + * @param components Array of normalized component samples of single pixel. + * The scale and multiplication state of the samples are according to the + * color model. Each component sample is stored as a separate element in the + * array. + * @param offset Position of the first value of the pixel in components. + * + * @return pixel value encoded according to the color model. + * @since 1.4 + */ + public int getDataElement (float[] components, int offset) + { + return + getDataElement(getUnnormalizedComponents(components, offset, null, 0), + 0); + } + + public Object getDataElements(int[] components, int offset, Object obj) + { + // subclasses have to implement this method. + throw new UnsupportedOperationException(); + } + + /** + * Converts the normalized component samples from an array to an array of + * TransferType values. I.e. composes the pixel from component samples, but + * does not perform any color conversion or scaling of the samples. + * + * If obj is null, a new array of TransferType is allocated and returned. + * Otherwise the results are stored in obj and obj is returned. If obj is + * not long enough, ArrayIndexOutOfBounds is thrown. If obj is not an array + * of primitives, ClassCastException is thrown. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. The method provided by this abstract + * class converts the components to unnormalized form and returns + * getDataElement(int[], int, Object). + * + * @param components Array of normalized component samples of single pixel. + * The scale and multiplication state of the samples are according to the + * color model. Each component sample is stored as a separate element in the + * array. + * @param offset Position of the first value of the pixel in components. + * @param obj Array of TransferType or null. + * + * @return pixel value encoded according to the color model. + * @throws ArrayIndexOutOfBoundsException + * @throws ClassCastException + * @since 1.4 + */ + public Object getDataElements(float[] components, int offset, Object obj) + { + return + getDataElements(getUnnormalizedComponents(components, offset, null, 0), + 0, obj); + } + + public boolean equals(Object obj) + { + if (!(obj instanceof ColorModel)) return false; + + ColorModel o = (ColorModel) obj; + return + (pixel_bits == o.pixel_bits) && + (transferType == o.transferType) && + (transparency == o.transparency) && + (hasAlpha == o.hasAlpha) && + (isAlphaPremultiplied == o.isAlphaPremultiplied) && + Arrays.equals(bits, o.bits) && + (cspace.equals(o.cspace)); + } + + public final ColorSpace getColorSpace() + { + return cspace; + } + + public ColorModel coerceData(WritableRaster raster, + boolean isAlphaPremultiplied) + { + // This method should always be overridden, but is not abstract. + throw new UnsupportedOperationException(); + } + + void coerceDataWorker(WritableRaster raster, + boolean isAlphaPremultiplied) + { + int w = raster.getWidth(); + int h = raster.getHeight(); + int x = raster.getMinX(); + int y = raster.getMinY(); + int size = w * h; + int numColors = getNumColorComponents(); + int numComponents = getNumComponents(); + int alphaScale = (1 << getComponentSize(numColors)) - 1; + double[] pixels = raster.getPixels(x, y, w, h, (double[]) null); + + for (int i = 0; i < size; i++) + { + double alpha = pixels[i * numComponents + numColors] / alphaScale; + for (int c = 0; c < numColors; c++) + { + int offset = i * numComponents + c; + if (isAlphaPremultiplied) + pixels[offset] = Math.round(pixels[offset] * alpha); + else + pixels[offset] = Math.round(pixels[offset] / alpha); + } + } + + raster.setPixels(0, 0, w, h, pixels); + } + + /** + * Checks if the given raster has a compatible data-layout (SampleModel). + * @param raster The Raster to test. + * @return true if raster is compatible. + */ + public boolean isCompatibleRaster(Raster raster) + { + SampleModel sampleModel = raster.getSampleModel(); + return isCompatibleSampleModel(sampleModel); + } + + // Typically overridden + public WritableRaster createCompatibleWritableRaster(int w, int h) + { + return new WritableRaster(createCompatibleSampleModel(w, h), + new Point(0, 0)); + } + + // Typically overridden + public SampleModel createCompatibleSampleModel(int w, int h) + { + throw new UnsupportedOperationException(); + } + + // Typically overridden + public boolean isCompatibleSampleModel(SampleModel sm) + { + return sm.getTransferType() == transferType; + } + + public final int getTransferType () + { + return transferType; + } + + /** + * Subclasses must override this method if it is possible for the + * color model to have an alpha channel. + * + * @return null, as per JDK 1.3 doc. Subclasses will only return + * null if no alpha raster exists. + */ + public WritableRaster getAlphaRaster(WritableRaster raster) + { + return null; + + /* It is a mystery to me why we couldn't use the following code... + + + if (!hasAlpha()) return null; + + SampleModel sm = raster.getSampleModel(); + int[] alphaBand = { sm.getNumBands() - 1 }; + SampleModel alphaModel = sm.createSubsetSampleModel(alphaBand); + DataBuffer buffer = raster.getDataBuffer(); + Point origin = new Point(0, 0); + return Raster.createWritableRaster(alphaModel, buffer, origin); + + + ...here, and avoided overriding the method in subclasses, + but the Sun docs state that this method always will return + null, and that overriding is required. Oh, well. + */ + } + + String stringParam() + { + return "pixel_bits=" + pixel_bits + + ", cspace=" + cspace + + ", transferType=" + transferType + + ", transparency=" + transparency + + ", hasAlpha=" + hasAlpha + + ", isAlphaPremultiplied=" + isAlphaPremultiplied; + } + + public String toString() + { + return getClass().getName() + "[" + stringParam() + "]"; + } + + /** + * A color model optimized for standard sRGB. + */ + private static class SRGBColorModel + extends DirectColorModel + { + + SRGBColorModel() + { + super(32,0x00FF0000,0x0000FF00,0x000000FF,0xFF000000); + } + + public int getAlpha(Object inData) + { + return ((((int[]) inData)[0]) >> 24) & 0xFF; + } + + public int getBlue(Object inData) + { + return ((((int[]) inData)[0])) & 0xFF; + } + + public int getGreen(Object inData) + { + return ((((int[]) inData)[0]) >> 8) & 0xFF; + } + + public int getRed(Object inData) + { + return ((((int[]) inData)[0]) >> 16) & 0xFF; + } + + public int getRGB(Object inData) + { + return ((int[]) inData)[0]; + } + + public Object getDataElements(int rgb, Object pixel) + { + if(pixel == null) + { + pixel = new int[]{rgb}; + } + else + { + ((int[]) pixel)[0] = rgb; + } + + return pixel; + } + } +} diff --git a/libjava/classpath/java/awt/image/ComponentColorModel.java b/libjava/classpath/java/awt/image/ComponentColorModel.java new file mode 100644 index 000000000..ef0b84f00 --- /dev/null +++ b/libjava/classpath/java/awt/image/ComponentColorModel.java @@ -0,0 +1,408 @@ +/* ComponentColorModel.java -- + Copyright (C) 2000, 2002, 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; + +import java.awt.Point; +import java.awt.color.ColorSpace; +import java.util.Arrays; + +public class ComponentColorModel extends ColorModel +{ + // Find sum of all elements of the array. + private static int sum(int[] values) + { + int sum = 0; + for (int i=0; i<values.length; i++) + sum += values[i]; + return sum; + } + + // Create an appropriate array of bits, given a colorspace (ie, number of + // bands), size of the storage data type, and presence of an alpha band. + private static int[] findBits(ColorSpace colorSpace, int transferType, + boolean hasAlpha) + { + int[] bits; + if (hasAlpha) + bits = new int[colorSpace.getNumComponents()+1]; + else + bits = new int[colorSpace.getNumComponents()]; + + Arrays.fill(bits, DataBuffer.getDataTypeSize(transferType)); + + return bits; + } + + public ComponentColorModel(ColorSpace colorSpace, int[] bits, + boolean hasAlpha, + boolean isAlphaPremultiplied, + int transparency, int transferType) + { + super(sum(bits), bits, colorSpace, hasAlpha, isAlphaPremultiplied, + transparency, transferType); + } + + /** + * Construct a new ComponentColorModel. + * + * This constructor makes all bits of each sample significant, so for a + * transferType of DataBuffer.BYTE, the bits per sample is 8, etc. If + * both hasAlpha and isAlphaPremultiplied are true, color samples are + * assumed to be premultiplied by the alpha component. Transparency may be + * one of OPAQUE, BITMASK, or TRANSLUCENT. + * + * @param colorSpace The colorspace for this color model. + * @param hasAlpha True if there is an alpha component. + * @param isAlphaPremultiplied True if colors are already multiplied by + * alpha. + * @param transparency The type of alpha values. + * @param transferType Data type of pixel sample values. + * @since 1.4 + */ + public ComponentColorModel(ColorSpace colorSpace, + boolean hasAlpha, + boolean isAlphaPremultiplied, + int transparency, int transferType) + { + this(colorSpace, findBits(colorSpace, transferType, hasAlpha), hasAlpha, + isAlphaPremultiplied, transparency, transferType); + } + + public int getRed(int pixel) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + return (int) getRGBFloat(pixel)[0]; + } + + public int getGreen(int pixel) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + return (int) getRGBFloat(pixel)[0]; + } + + public int getBlue(int pixel) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + return (int) getRGBFloat(pixel)[0]; + } + + public int getAlpha(int pixel) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + int shift = 8 - getComponentSize(getNumColorComponents()); + if (shift >= 0) return pixel << shift; + return pixel >> (-shift); + } + + public int getRGB(int pixel) + { + float[] rgb = getRGBFloat(pixel); + int ret = getRGB(rgb); + if (hasAlpha()) ret |= getAlpha(pixel) << 24; + return ret; + } + + + /* Note, it's OK to pass a to large array to toRGB(). Extra + elements are ignored. */ + + private float[] getRGBFloat(int pixel) + { + float[] data = { pixel }; + return cspace.toRGB(data); + } + + private float[] getRGBFloat(Object inData) + { + DataBuffer buffer = + Buffers.createBufferFromData(transferType, inData, + getNumComponents()); + int colors = getNumColorComponents(); + float[] data = new float[colors]; + + // FIXME: unpremultiply data that is premultiplied + for (int i=0; i<colors; i++) + { + float maxValue = (1<<getComponentSize(i))-1; + data[i] = buffer.getElemFloat(i)/maxValue; + } + float[] rgb = cspace.toRGB(data); + return rgb; + } + + public int getRed(Object inData) + { + return (int) getRGBFloat(inData)[0]*255; + } + + public int getGreen(Object inData) + { + return (int) getRGBFloat(inData)[1]*255; + } + + public int getBlue(Object inData) + { + return (int) getRGBFloat(inData)[2]*255; + } + + public int getAlpha(Object inData) + { + DataBuffer buffer = + Buffers.createBufferFromData(transferType, inData, + getNumComponents()); + int shift = 8 - getComponentSize(getNumColorComponents()); + int alpha = buffer.getElem(getNumColorComponents()); + if (shift >= 0) return alpha << shift; + return alpha >> (-shift); + } + + private int getRGB(float[] rgb) + { + /* NOTE: We could cast to byte instead of int here. This would + avoid bits spilling over from one bit field to + another. But, if we assume that floats are in the [0.0, + 1.0] range, this will never happen anyway. */ + + /* Remember to multiply BEFORE casting to int, otherwise, decimal + point data will be lost. */ + int ret = + (((int) (rgb[0]*255F)) << 16) | + (((int) (rgb[1]*255F)) << 8) | + (((int) (rgb[2]*255F)) << 0); + return ret; + } + + /** + * @param inData pixel data of transferType, as returned by the + * getDataElements method in SampleModel. + */ + public int getRGB(Object inData) + { + float[] rgb = getRGBFloat(inData); + int ret = getRGB(rgb); + if (hasAlpha()) ret |= getAlpha(inData) << 24; + return ret; + } + + public Object getDataElements(int rgb, Object pixel) + { + // Convert rgb to [0.0, 1.0] sRGB values. + float[] rgbFloats = { + ((rgb >> 16)&0xff)/255.0F, + ((rgb >> 8)&0xff)/255.0F, + ((rgb >> 0)&0xff)/255.0F + }; + + // Convert from rgb to color space components. + float[] data = cspace.fromRGB(rgbFloats); + DataBuffer buffer = Buffers.createBuffer(transferType, pixel, + getNumComponents()); + int numColors = getNumColorComponents(); + + if (hasAlpha()) + { + float alpha = ((rgb >> 24)&0xff)/255.0F; + + /* If color model has alpha and should be premultiplied, multiply + color space components with alpha value. */ + if (isAlphaPremultiplied()) { + for (int i=0; i<numColors; i++) + data[i] *= alpha; + } + // Scale the alpha sample to the correct number of bits. + alpha *= (1<<(bits[numColors]-1)); + // Arrange the alpha sample in the output array. + buffer.setElemFloat(numColors, alpha); + } + for (int i=0; i<numColors; i++) + { + // Scale the color samples to the correct number of bits. + float value = data[i]*(1<<(bits[i]-1)); + // Arrange the color samples in the output array. + buffer.setElemFloat(i, value); + } + return Buffers.getData(buffer); + } + + public int[] getComponents(int pixel, int[] components, int offset) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + if (components == null) + components = new int[getNumComponents() + offset]; + components[offset] = pixel; + return components; + } + + public int[] getComponents(Object pixel, int[] components, int offset) + { + DataBuffer buffer = Buffers.createBuffer(transferType, pixel, + getNumComponents()); + int numComponents = getNumComponents(); + + if (components == null) + components = new int[numComponents + offset]; + + for (int i=0; i<numComponents; i++) + components[offset++] = buffer.getElem(i); + + return components; + } + + public int getDataElement(int[] components, int offset) + { + if (getNumComponents()>1) throw new IllegalArgumentException(); + return components[offset]; + } + + public Object getDataElements(int[] components, int offset, Object obj) + { + DataBuffer buffer = Buffers.createBuffer(transferType, obj, + getNumComponents()); + int numComponents = getNumComponents(); + + for (int i=0; i<numComponents; i++) + buffer.setElem(i, components[offset++]); + + return Buffers.getData(buffer); + } + + public ColorModel coerceData(WritableRaster raster, + boolean isAlphaPremultiplied) { + if (this.isAlphaPremultiplied == isAlphaPremultiplied || !hasAlpha()) + return this; + + /* TODO: provide better implementation based on the + assumptions we can make due to the specific type of the + color model. */ + coerceDataWorker(raster, isAlphaPremultiplied); + + return new ComponentColorModel(cspace, hasAlpha, isAlphaPremultiplied, + transparency, transferType); + } + + public boolean isCompatibleRaster(Raster raster) + { + return super.isCompatibleRaster(raster); + // FIXME: Should we test something more here? (Why override?) + } + + public WritableRaster createCompatibleWritableRaster(int w, int h) + { + SampleModel sm = createCompatibleSampleModel(w, h); + Point origin = new Point(0, 0); + return Raster.createWritableRaster(sm, origin); + } + + + /** + * Creates a <code>SampleModel</code> whose arrangement of pixel + * data is compatible to this <code>ColorModel</code>. + * + * @param w the number of pixels in the horizontal direction. + * @param h the number of pixels in the vertical direction. + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + int pixelStride, scanlineStride; + int[] bandOffsets; + + pixelStride = getNumComponents(); + scanlineStride = pixelStride * w; + + /* We might be able to re-use the same bandOffsets array among + * multiple calls to this method. However, this optimization does + * not seem worthwile because setting up descriptive data + * structures (such as SampleModels) is neglectible in comparision + * to shuffling around masses of pixel data. + */ + bandOffsets = new int[pixelStride]; + for (int i = 0; i < pixelStride; i++) + bandOffsets[i] = i; + + /* FIXME: Think about whether it would make sense to return the + * possibly more efficient PixelInterleavedSampleModel for other + * transferTypes as well. It seems unlikely that this would break + * any user applications, so the Mauve tests on this method + * might be too restrictive. + */ + switch (transferType) + { + case DataBuffer.TYPE_BYTE: + case DataBuffer.TYPE_USHORT: + return new PixelInterleavedSampleModel(transferType, w, h, + pixelStride, + scanlineStride, + bandOffsets); + + default: + return new ComponentSampleModel(transferType, w, h, + pixelStride, + scanlineStride, + bandOffsets); + } + } + + + public boolean isCompatibleSampleModel(SampleModel sm) + { + return + (sm instanceof ComponentSampleModel) && + super.isCompatibleSampleModel(sm); + } + + public WritableRaster getAlphaRaster(WritableRaster raster) + { + if (!hasAlpha()) return null; + + SampleModel sm = raster.getSampleModel(); + int[] alphaBand = { sm.getNumBands() - 1 }; + SampleModel alphaModel = sm.createSubsetSampleModel(alphaBand); + DataBuffer buffer = raster.getDataBuffer(); + Point origin = new Point(0, 0); + return Raster.createWritableRaster(alphaModel, buffer, origin); + } + + public boolean equals(Object obj) + { + if (!(obj instanceof ComponentColorModel)) return false; + return super.equals(obj); + } +} diff --git a/libjava/classpath/java/awt/image/ComponentSampleModel.java b/libjava/classpath/java/awt/image/ComponentSampleModel.java new file mode 100644 index 000000000..f32eae319 --- /dev/null +++ b/libjava/classpath/java/awt/image/ComponentSampleModel.java @@ -0,0 +1,755 @@ +/* Copyright (C) 2000, 2002, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import java.util.Arrays; + +/** + * ComponentSampleModel supports a flexible organization of pixel samples in + * memory, permitting pixel samples to be interleaved by band, by scanline, + * and by pixel. + * + * A DataBuffer for this sample model has K banks of data. Pixels have N + * samples, so there are N bands in the DataBuffer. Each band is completely + * contained in one bank of data, but a bank may contain more than one band. + * Each pixel sample is stored in a single data element. + * + * Within a bank, each band begins at an offset stored in bandOffsets. The + * banks containing the band is given by bankIndices. Within the bank, there + * are three dimensions - band, pixel, and scanline. The dimension ordering + * is controlled by bandOffset, pixelStride, and scanlineStride, which means + * that any combination of interleavings is supported. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class ComponentSampleModel extends SampleModel +{ + /** The offsets to the first sample for each band. */ + protected int[] bandOffsets; + + /** The indices of the bank used to store each band in a data buffer. */ + protected int[] bankIndices; + + /** + * The number of bands in the image. + * @specnote This field shadows the protected numBands in SampleModel. + */ + protected int numBands; + + /** Used when creating data buffers. */ + protected int numBanks; + + /** + * The number of data elements between a sample in one row and the + * corresponding sample in the next row. + */ + protected int scanlineStride; + + /** + * The number of data elements between a sample for one pixel and the + * corresponding sample for the next pixel in the same row. + */ + protected int pixelStride; + + /** + * Creates a new sample model that assumes that all bands are stored in a + * single bank of the {@link DataBuffer}. + * <p> + * Note that the <code>bandOffsets</code> array is copied to internal storage + * to prevent subsequent changes to the array from affecting this object. + * + * @param dataType the data type (one of {@link DataBuffer#TYPE_BYTE}, + * {@link DataBuffer#TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT}, + * {@link DataBuffer#TYPE_INT}, {@link DataBuffer#TYPE_FLOAT} or + * {@link DataBuffer#TYPE_DOUBLE}). + * @param w the width in pixels. + * @param h the height in pixels. + * @param pixelStride the number of data elements in the step from a sample + * in one pixel to the corresponding sample in the next pixel. + * @param scanlineStride the number of data elements in the step from a + * sample in a pixel to the corresponding sample in the pixel in the next + * row. + * @param bandOffsets the offset to the first element for each band, with + * the size of the array defining the number of bands (<code>null</code> + * not permitted). + * + * @throws IllegalArgumentException if <code>dataType</code> is not one of + * the specified values. + * @throws IllegalArgumentException if <code>w</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>h</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>w * h</code> exceeds + * {@link Integer#MAX_VALUE}. + * @throws IllegalArgumentException if <code>pixelStride</code> is negative. + * @throws IllegalArgumentException if <code>scanlineStride</code> is less + * than or equal to zero. + * @throws IllegalArgumentException if <code>bandOffsets</code> has zero + * length. + */ + public ComponentSampleModel(int dataType, + int w, int h, + int pixelStride, + int scanlineStride, + int[] bandOffsets) + { + this(dataType, w, h, pixelStride, scanlineStride, + new int[bandOffsets.length], bandOffsets); + } + + /** + * Creates a new sample model that assumes that all bands are stored in a + * single bank of the {@link DataBuffer}. + * + * @param dataType the data type (one of {@link DataBuffer#TYPE_BYTE}, + * {@link DataBuffer#TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT}, + * {@link DataBuffer#TYPE_INT}, {@link DataBuffer#TYPE_FLOAT} or + * {@link DataBuffer#TYPE_DOUBLE}). + * @param w the width in pixels. + * @param h the height in pixels. + * @param pixelStride the number of data elements in the step from a sample + * in one pixel to the corresponding sample in the next pixel. + * @param scanlineStride the number of data elements in the step from a + * sample in a pixel to the corresponding sample in the pixel in the next + * row. + * @param bankIndices the index of the bank in which each band is stored + * (<code>null</code> not permitted). This array is copied to internal + * storage so that subsequent updates to the array do not affect the sample + * model. + * @param bandOffsets the offset to the first element for each band, with + * the size of the array defining the number of bands (<code>null</code> + * not permitted). This array is copied to internal storage so that + * subsequent updates to the array do not affect the sample model. + * + * @throws IllegalArgumentException if <code>dataType</code> is not one of + * the specified values. + * @throws IllegalArgumentException if <code>w</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>h</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>w * h</code> exceeds + * {@link Integer#MAX_VALUE}. + * @throws IllegalArgumentException if <code>pixelStride</code> is negative. + * @throws IllegalArgumentException if <code>scanlineStride</code> is less + * than or equal to zero. + * @throws IllegalArgumentException if <code>bandOffsets</code> has zero + * length. + */ + public ComponentSampleModel(int dataType, + int w, int h, + int pixelStride, + int scanlineStride, + int[] bankIndices, + int[] bandOffsets) + { + super(dataType, w, h, bandOffsets.length); + + // super permits DataBuffer.TYPE_UNDEFINED but this class doesn't... + if (dataType == DataBuffer.TYPE_UNDEFINED) + throw new IllegalArgumentException("Unsupported dataType."); + + if ((pixelStride < 0) || (scanlineStride < 0) || (bandOffsets.length < 1) + || (bandOffsets.length != bankIndices.length)) + throw new IllegalArgumentException(); + + this.bandOffsets = (int[]) bandOffsets.clone(); + this.bankIndices = (int[]) bankIndices.clone(); + this.numBands = bandOffsets.length; + + this.numBanks = 0; + for (int b = 0; b < bankIndices.length; b++) + this.numBanks = Math.max(this.numBanks, bankIndices[b] + 1); + + this.scanlineStride = scanlineStride; + this.pixelStride = pixelStride; + + } + + /** + * Creates a new sample model that is compatible with this one, but with the + * specified dimensions. + * + * @param w the width (must be greater than zero). + * @param h the height (must be greater than zero). + * + * @return A new sample model. + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + return new ComponentSampleModel(dataType, w, h, pixelStride, + scanlineStride, bankIndices, + bandOffsets); + } + + /** + * Creates a new sample model that provides access to a subset of the bands + * that this sample model supports. + * + * @param bands the bands (<code>null</code> not permitted). + * + * @return The new sample model. + */ + public SampleModel createSubsetSampleModel(int[] bands) + { + int numBands = bands.length; + + int[] bankIndices = new int[numBands]; + int[] bandOffsets = new int[numBands]; + for (int b = 0; b < numBands; b++) + { + bankIndices[b] = this.bankIndices[bands[b]]; + bandOffsets[b] = this.bandOffsets[bands[b]]; + } + + return new ComponentSampleModel(dataType, width, height, pixelStride, + scanlineStride, bankIndices, + bandOffsets); + } + + /** + * Creates a new data buffer that is compatible with this sample model. + * + * @return The new data buffer. + */ + public DataBuffer createDataBuffer() + { + // Maybe this value should be precalculated in the constructor? + int highestOffset = 0; + for (int b = 0; b < numBands; b++) + highestOffset = Math.max(highestOffset, bandOffsets[b]); + int size = pixelStride * (width - 1) + scanlineStride * (height - 1) + + highestOffset + 1; + + DataBuffer buffer = null; + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + buffer = new DataBufferByte(size, numBanks); + break; + case DataBuffer.TYPE_SHORT: + buffer = new DataBufferShort(size, numBanks); + break; + case DataBuffer.TYPE_USHORT: + buffer = new DataBufferUShort(size, numBanks); + break; + case DataBuffer.TYPE_INT: + buffer = new DataBufferInt(size, numBanks); + break; + case DataBuffer.TYPE_FLOAT: + buffer = new DataBufferFloat(size, numBanks); + break; + case DataBuffer.TYPE_DOUBLE: + buffer = new DataBufferDouble(size, numBanks); + break; + } + return buffer; + } + + /** + * Returns the offset of the sample in band 0 for the pixel at location + * <code>(x, y)</code>. This offset can be used to read a sample value from + * a {@link DataBuffer}. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * + * @return The offset. + * + * @see #getOffset(int, int, int) + */ + public int getOffset(int x, int y) + { + return getOffset(x, y, 0); + } + + /** + * Returns the offset of the sample in band <code>b</code> for the pixel at + * location <code>(x, y)</code>. This offset can be used to read a sample + * value from a {@link DataBuffer}. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param b the band index. + * + * @return The offset. + */ + public int getOffset(int x, int y, int b) + { + return bandOffsets[b] + pixelStride * x + scanlineStride * y; + } + + /** + * Returns the size in bits for each sample (one per band). For this sample + * model, each band has the same sample size and this is determined by the + * data type for the sample model. + * + * @return The sample sizes. + * + * @see SampleModel#getDataType() + */ + public final int[] getSampleSize() + { + int size = DataBuffer.getDataTypeSize(getDataType()); + int[] sizes = new int[numBands]; + + java.util.Arrays.fill(sizes, size); + return sizes; + } + + /** + * Returns the size in bits for the samples in the specified band. In this + * class, the sample size is the same for every band and is determined from + * the data type for the model. + * + * @param band the band index (ignored here). + * + * @return The sample size in bits. + * + * @see SampleModel#getDataType() + */ + public final int getSampleSize(int band) + { + return DataBuffer.getDataTypeSize(getDataType()); + } + + /** + * Returns the indices of the bank(s) in the {@link DataBuffer} used to + * store the samples for each band. The returned array is a copy, so that + * altering it will not impact the sample model. + * + * @return The bank indices. + */ + public final int[] getBankIndices() + { + return (int[]) bankIndices.clone(); + } + + /** + * Returns the offsets to the first sample in each band. The returned array + * is a copy, so that altering it will not impact the sample model. + * + * @return The offsets. + */ + public final int[] getBandOffsets() + { + return (int[]) bandOffsets.clone(); + } + + /** + * Returns the distance (in terms of element indices) between the sample for + * one pixel and the corresponding sample for the equivalent pixel in the + * next row. This is used in the calculation of the element offset for + * retrieving samples from a {@link DataBuffer}. + * + * @return The distance between pixel samples in consecutive rows. + */ + public final int getScanlineStride() + { + return scanlineStride; + } + + /** + * Returns the distance (in terms of element indices) between the sample for + * one pixel and the corresponding sample for the next pixel in a row. This + * is used in the calculation of the element offset for retrieving samples + * from a {@link DataBuffer}. + * + * @return The distance between pixel samples in the same row. + */ + public final int getPixelStride() + { + return pixelStride; + } + + /** + * Returns the number of data elements used to store the samples for one + * pixel. In this model, this is the same as the number of bands. + * + * @return The number of data elements used to store the samples for one + * pixel. + */ + public final int getNumDataElements() + { + return numBands; + } + + /** + * Returns the samples for the pixel at location <code>(x, y)</code> in + * a primitive array (the array type is determined by the data type for + * this model). The <code>obj</code> argument provides an option to supply + * an existing array to hold the result, if this is <code>null</code> a new + * array will be allocated. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param obj a primitive array that, if not <code>null</code>, will be + * used to store and return the sample values. + * @param data the data buffer (<code>null</code> not permitted). + * + * @return An array of sample values for the specified pixel. + */ + public Object getDataElements(int x, int y, Object obj, DataBuffer data) + { + int type = getTransferType(); + int numDataEls = getNumDataElements(); + int offset = y * scanlineStride + x * pixelStride; + switch (type) + { + case DataBuffer.TYPE_BYTE: + byte[] bData; + if (obj == null) + bData = new byte[numDataEls]; + else + bData = (byte[]) obj; + for (int i = 0; i < numDataEls; i++) + { + bData[i] = (byte) data.getElem(bankIndices[i], + offset + bandOffsets[i]); + } + obj = bData; + break; + case DataBuffer.TYPE_SHORT: + case DataBuffer.TYPE_USHORT: + short[] sData; + if (obj == null) + sData = new short[numDataEls]; + else + sData = (short[]) obj; + for (int i = 0; i < numDataEls; i++) + { + sData[i] = (short) data.getElem(bankIndices[i], + offset + bandOffsets[i]); + } + obj = sData; + break; + case DataBuffer.TYPE_INT: + int[] iData; + if (obj == null) + iData = new int[numDataEls]; + else + iData = (int[]) obj; + for (int i = 0; i < numDataEls; i++) + { + iData[i] = data.getElem(bankIndices[i], offset + bandOffsets[i]); + } + obj = iData; + break; + case DataBuffer.TYPE_FLOAT: + float[] fData; + if (obj == null) + fData = new float[numDataEls]; + else + fData = (float[]) obj; + for (int i = 0; i < numDataEls; i++) + { + fData[i] = data.getElemFloat(bankIndices[i], + offset + bandOffsets[i]); + } + obj = fData; + break; + case DataBuffer.TYPE_DOUBLE: + double[] dData; + if (obj == null) + dData = new double[numDataEls]; + else + dData = (double[]) obj; + for (int i = 0; i < numDataEls; i++) + { + dData[i] = data.getElemDouble(bankIndices[i], + offset + bandOffsets[i]); + } + obj = dData; + break; + } + return obj; + } + + + /** + * Returns all the samples for the pixel at location <code>(x, y)</code> + * stored in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param iArray an array that will be populated with the sample values and + * returned as the result. The size of this array should be equal to the + * number of bands in the model. If the array is <code>null</code>, a new + * array is created. + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The samples for the specified pixel. + * + * @see #setPixel(int, int, int[], DataBuffer) + */ + public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) + { + if (x < 0 || x >= width || y < 0 || y >= height) + throw new ArrayIndexOutOfBoundsException("Pixel (" + x + ", " + y + + ") is out of bounds."); + int offset = pixelStride * x + scanlineStride * y; + if (iArray == null) + iArray = new int[numBands]; + for (int b = 0; b < numBands; b++) + { + iArray[b] = data.getElem(bankIndices[b], offset + bandOffsets[b]); + } + return iArray; + } + + /** + * Returns the samples for all the pixels in a rectangular region. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param w the width. + * @param h the height. + * @param iArray an array that if non-<code>null</code> will be populated + * with the sample values and returned as the result. + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The samples for all the pixels in the rectangle. + */ + public int[] getPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int offset = pixelStride * x + scanlineStride * y; + if (iArray == null) + iArray = new int[numBands * w * h]; + int outOffset = 0; + for (y = 0; y < h; y++) + { + int lineOffset = offset; + for (x = 0; x < w; x++) + { + for (int b = 0; b < numBands; b++) + { + iArray[outOffset++] + = data.getElem(bankIndices[b], lineOffset+bandOffsets[b]); + } + lineOffset += pixelStride; + } + offset += scanlineStride; + } + return iArray; + } + + /** + * Returns the sample for band <code>b</code> of the pixel at + * <code>(x, y)</code> that is stored in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param b the band index. + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws ArrayIndexOutOfBoundsException if <code>(x, y)</code> is outside + * the bounds <code>[0, 0, width, height]</code>. + * + * @see #setSample(int, int, int, int, DataBuffer) + */ + public int getSample(int x, int y, int b, DataBuffer data) + { + if (x < 0 || x >= width || y < 0 || y >= height) + throw new ArrayIndexOutOfBoundsException("Sample (" + x + ", " + y + + ") is out of bounds."); + return data.getElem(bankIndices[b], getOffset(x, y, b)); + } + + /** + * Sets the samples for the pixel at location <code>(x, y)</code> from the + * supplied primitive array (the array type must be consistent with the data + * type for this model). + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param obj a primitive array containing the pixel's sample values. + * @param data the data buffer (<code>null</code> not permitted). + * + * @see #setDataElements(int, int, Object, DataBuffer) + */ + public void setDataElements(int x, int y, Object obj, DataBuffer data) + { + int type = getTransferType(); + int numDataEls = getNumDataElements(); + int offset = y * scanlineStride + x * pixelStride; + switch (type) + { + case DataBuffer.TYPE_BYTE: + byte[] bData = (byte[]) obj; + for (int i = 0; i < numDataEls; i++) + { + data.setElem(bankIndices[i], offset + bandOffsets[i], + ((int) bData[i]) & 0xFF); + } + break; + case DataBuffer.TYPE_SHORT: + case DataBuffer.TYPE_USHORT: + short[] sData = (short[]) obj; + for (int i = 0; i < numDataEls; i++) + { + data.setElem(bankIndices[i], offset + bandOffsets[i], + ((int) sData[i]) & 0xFFFF); + } + break; + case DataBuffer.TYPE_INT: + int[] iData = (int[]) obj; + for (int i = 0; i < numDataEls; i++) + { + data.setElem(bankIndices[i], offset + bandOffsets[i], iData[i]); + } + break; + case DataBuffer.TYPE_FLOAT: + float[] fData = (float[]) obj; + for (int i = 0; i < numDataEls; i++) + { + data.setElemFloat(bankIndices[i], offset + bandOffsets[i], + fData[i]); + } + break; + case DataBuffer.TYPE_DOUBLE: + double[] dData = (double[]) obj; + for (int i = 0; i < numDataEls; i++) + { + data.setElemDouble(bankIndices[i], offset + bandOffsets[i], + dData[i]); + } + break; + } + } + + /** + * Sets the sample values for the pixel at location <code>(x, y)</code> + * stored in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param iArray the pixel sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @see #getPixel(int, int, int[], DataBuffer) + */ + public void setPixel(int x, int y, int[] iArray, DataBuffer data) + { + int offset = pixelStride * x + scanlineStride * y; + for (int b = 0; b < numBands; b++) + data.setElem(bankIndices[b], offset + bandOffsets[b], iArray[b]); + } + + /** + * Sets the sample value for band <code>b</code> of the pixel at location + * <code>(x, y)</code> in the specified data buffer. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param b the band index. + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @see #getSample(int, int, int, DataBuffer) + */ + public void setSample(int x, int y, int b, int s, DataBuffer data) + { + data.setElem(bankIndices[b], getOffset(x, y, b), s); + } + + /** + * Tests this sample model for equality with an arbitrary object. Returns + * <code>true</code> if and only if: + * <ul> + * <li><code>obj</code> is not <code>null</code>;</li> + * <li><code>obj</code> is an instance of <code>ComponentSampleModel</code>; + * </li> + * <li>both models have the same values for the <code>dataType</code>, + * <code>width</code>, <code>height</code>, <code>pixelStride</code>, + * <code>scanlineStride</code>, <code>bandOffsets</code> and + * <code>bankIndices</code> fields.</li> + * </ul> + * + * @param obj the object to test (<code>null</code> permitted). + * + * @return <code>true</code> if this sample model is equal to + * <code>obj</code>, and <code>false</code> otherwise. + */ + public boolean equals(Object obj) + { + if (obj == null) + return false; + if (! (obj instanceof ComponentSampleModel)) + return false; + ComponentSampleModel that = (ComponentSampleModel) obj; + if (this.dataType != that.dataType) + return false; + if (this.width != that.width) + return false; + if (this.height != that.height) + return false; + if (this.pixelStride != that.pixelStride) + return false; + if (this.scanlineStride != that.scanlineStride) + return false; + if (! Arrays.equals(this.bandOffsets, that.bandOffsets)) + return false; + if (! Arrays.equals(this.bankIndices, that.bankIndices)) + return false; + // couldn't find any difference, so... + return true; + } + + /** + * Returns a hash code for this sample model. + * + * @return The hash code. + */ + public int hashCode() + { + // this computation is based on the method described in Chapter 3 + // of Joshua Bloch's Effective Java... + int result = 17; + result = 37 * result + dataType; + result = 37 * result + width; + result = 37 * result + height; + result = 37 * result + pixelStride; + result = 37 * result + scanlineStride; + for (int i = 0; i < bandOffsets.length; i++) + result = 37 * result + bandOffsets[i]; + for (int i = 0; i < bankIndices.length; i++) + result = 37 * result + bankIndices[i]; + return result; + } +} diff --git a/libjava/classpath/java/awt/image/ConvolveOp.java b/libjava/classpath/java/awt/image/ConvolveOp.java new file mode 100644 index 000000000..10b85f446 --- /dev/null +++ b/libjava/classpath/java/awt/image/ConvolveOp.java @@ -0,0 +1,380 @@ +/* ConvolveOp.java -- + Copyright (C) 2004, 2005, 2006, Free Software Foundation -- ConvolveOp + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; + +/** + * Convolution filter. + * + * ConvolveOp convolves the source image with a Kernel to generate a + * destination image. This involves multiplying each pixel and its neighbors + * with elements in the kernel to compute a new pixel. + * + * Each band in a Raster is convolved and copied to the destination Raster. + * For BufferedImages, convolution is applied to all components. Color + * conversion will be applied if needed. + * + * Note that this filter ignores whether the source or destination is alpha + * premultiplied. The reference spec states that data will be premultiplied + * prior to convolving and divided back out afterwards (if needed), but testing + * has shown that this is not the case with their implementation. + * + * @author jlquinn@optonline.net + */ +public class ConvolveOp implements BufferedImageOp, RasterOp +{ + /** Edge pixels are set to 0. */ + public static final int EDGE_ZERO_FILL = 0; + + /** Edge pixels are copied from the source. */ + public static final int EDGE_NO_OP = 1; + + private Kernel kernel; + private int edge; + private RenderingHints hints; + + /** + * Construct a ConvolveOp. + * + * The edge condition specifies that pixels outside the area that can be + * filtered are either set to 0 or copied from the source image. + * + * @param kernel The kernel to convolve with. + * @param edgeCondition Either EDGE_ZERO_FILL or EDGE_NO_OP. + * @param hints Rendering hints for color conversion, or null. + */ + public ConvolveOp(Kernel kernel, + int edgeCondition, + RenderingHints hints) + { + this.kernel = kernel; + edge = edgeCondition; + this.hints = hints; + } + + /** + * Construct a ConvolveOp. + * + * The edge condition defaults to EDGE_ZERO_FILL. + * + * @param kernel The kernel to convolve with. + */ + public ConvolveOp(Kernel kernel) + { + this.kernel = kernel; + edge = EDGE_ZERO_FILL; + hints = null; + } + + /** + * Converts the source image using the kernel specified in the + * constructor. The resulting image is stored in the destination image if one + * is provided; otherwise a new BufferedImage is created and returned. + * + * The source and destination BufferedImage (if one is supplied) must have + * the same dimensions. + * + * @param src The source image. + * @param dst The destination image. + * @throws IllegalArgumentException if the rasters and/or color spaces are + * incompatible. + * @return The convolved image. + */ + public final BufferedImage filter(BufferedImage src, BufferedImage dst) + { + if (src == dst) + throw new IllegalArgumentException("Source and destination images " + + "cannot be the same."); + + if (dst == null) + dst = createCompatibleDestImage(src, src.getColorModel()); + + // Make sure source image is premultiplied + BufferedImage src1 = src; + // The spec says we should do this, but mauve testing shows that Sun's + // implementation does not check this. + /* + if (!src.isAlphaPremultiplied()) + { + src1 = createCompatibleDestImage(src, src.getColorModel()); + src.copyData(src1.getRaster()); + src1.coerceData(true); + } + */ + + BufferedImage dst1 = dst; + if (src1.getColorModel().getColorSpace().getType() != dst.getColorModel().getColorSpace().getType()) + dst1 = createCompatibleDestImage(src, src.getColorModel()); + + filter(src1.getRaster(), dst1.getRaster()); + + // Since we don't coerceData above, we don't need to divide it back out. + // This is wrong (one mauve test specifically tests converting a non- + // premultiplied image to a premultiplied image, and it shows that Sun + // simply ignores the premultipled flag, contrary to the spec), but we + // mimic it for compatibility. + /* + if (! dst.isAlphaPremultiplied()) + dst1.coerceData(false); + */ + + // Convert between color models if needed + if (dst1 != dst) + new ColorConvertOp(hints).filter(dst1, dst); + + return dst; + } + + /** + * Creates an empty BufferedImage with the size equal to the source and the + * correct number of bands. The new image is created with the specified + * ColorModel, or if no ColorModel is supplied, an appropriate one is chosen. + * + * @param src The source image. + * @param dstCM A color model for the destination image (may be null). + * @return The new compatible destination image. + */ + public BufferedImage createCompatibleDestImage(BufferedImage src, + ColorModel dstCM) + { + if (dstCM != null) + return new BufferedImage(dstCM, + src.getRaster().createCompatibleWritableRaster(), + src.isAlphaPremultiplied(), null); + + return new BufferedImage(src.getWidth(), src.getHeight(), src.getType()); + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getRenderingHints() + */ + public final RenderingHints getRenderingHints() + { + return hints; + } + + /** + * Get the edge condition for this Op. + * + * @return The edge condition. + */ + public int getEdgeCondition() + { + return edge; + } + + /** + * Returns (a clone of) the convolution kernel. + * + * @return The convolution kernel. + */ + public final Kernel getKernel() + { + return (Kernel) kernel.clone(); + } + + /** + * Converts the source raster using the kernel specified in the constructor. + * The resulting raster is stored in the destination raster if one is + * provided; otherwise a new WritableRaster is created and returned. + * + * If the convolved value for a sample is outside the range of [0-255], it + * will be clipped. + * + * The source and destination raster (if one is supplied) cannot be the same, + * and must also have the same dimensions. + * + * @param src The source raster. + * @param dest The destination raster. + * @throws IllegalArgumentException if the rasters identical. + * @throws ImagingOpException if the convolution is not possible. + * @return The transformed raster. + */ + public final WritableRaster filter(Raster src, WritableRaster dest) + { + if (src == dest) + throw new IllegalArgumentException("src == dest is not allowed."); + if (kernel.getWidth() > src.getWidth() + || kernel.getHeight() > src.getHeight()) + throw new ImagingOpException("The kernel is too large."); + if (dest == null) + dest = createCompatibleDestRaster(src); + else if (src.getNumBands() != dest.getNumBands()) + throw new ImagingOpException("src and dest have different band counts."); + + // calculate the borders that the op can't reach... + int kWidth = kernel.getWidth(); + int kHeight = kernel.getHeight(); + int left = kernel.getXOrigin(); + int right = Math.max(kWidth - left - 1, 0); + int top = kernel.getYOrigin(); + int bottom = Math.max(kHeight - top - 1, 0); + + // Calculate max sample values for clipping + int[] maxValue = src.getSampleModel().getSampleSize(); + for (int i = 0; i < maxValue.length; i++) + maxValue[i] = (int)Math.pow(2, maxValue[i]) - 1; + + // process the region that is reachable... + int regionW = src.width - left - right; + int regionH = src.height - top - bottom; + float[] kvals = kernel.getKernelData(null); + float[] tmp = new float[kWidth * kHeight]; + + for (int x = 0; x < regionW; x++) + { + for (int y = 0; y < regionH; y++) + { + // FIXME: This needs a much more efficient implementation + for (int b = 0; b < src.getNumBands(); b++) + { + float v = 0; + src.getSamples(x, y, kWidth, kHeight, b, tmp); + for (int i = 0; i < tmp.length; i++) + v += tmp[tmp.length - i - 1] * kvals[i]; + // FIXME: in the above line, I've had to reverse the order of + // the samples array to make the tests pass. I haven't worked + // out why this is necessary. + + // This clipping is is undocumented, but determined by testing. + if (v > maxValue[b]) + v = maxValue[b]; + else if (v < 0) + v = 0; + + dest.setSample(x + kernel.getXOrigin(), y + kernel.getYOrigin(), + b, v); + } + } + } + + // fill in the top border + fillEdge(src, dest, 0, 0, src.width, top, edge); + + // fill in the bottom border + fillEdge(src, dest, 0, src.height - bottom, src.width, bottom, edge); + + // fill in the left border + fillEdge(src, dest, 0, top, left, regionH, edge); + + // fill in the right border + fillEdge(src, dest, src.width - right, top, right, regionH, edge); + + return dest; + } + + /** + * Fills a range of pixels (typically at the edge of a raster) with either + * zero values (if <code>edgeOp</code> is <code>EDGE_ZERO_FILL</code>) or the + * corresponding pixel values from the source raster (if <code>edgeOp</code> + * is <code>EDGE_NO_OP</code>). This utility method is called by the + * {@link #fillEdge(Raster, WritableRaster, int, int, int, int, int)} method. + * + * @param src the source raster. + * @param dest the destination raster. + * @param x the x-coordinate of the top left pixel in the range. + * @param y the y-coordinate of the top left pixel in the range. + * @param w the width of the pixel range. + * @param h the height of the pixel range. + * @param edgeOp indicates how to determine the values for the range + * (either {@link #EDGE_ZERO_FILL} or {@link #EDGE_NO_OP}). + */ + private void fillEdge(Raster src, WritableRaster dest, int x, int y, int w, + int h, int edgeOp) + { + if (w <= 0) + return; + if (h <= 0) + return; + if (edgeOp == EDGE_ZERO_FILL) // fill region with zeroes + { + float[] zeros = new float[src.getNumBands() * w * h]; + dest.setPixels(x, y, w, h, zeros); + } + else // copy pixels from source + { + float[] pixels = new float[src.getNumBands() * w * h]; + src.getPixels(x, y, w, h, pixels); + dest.setPixels(x, y, w, h, pixels); + } + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#createCompatibleDestRaster(java.awt.image.Raster) + */ + public WritableRaster createCompatibleDestRaster(Raster src) + { + return src.createCompatibleWritableRaster(); + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#getBounds2D(java.awt.image.BufferedImage) + */ + public final Rectangle2D getBounds2D(BufferedImage src) + { + return src.getRaster().getBounds(); + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getBounds2D(java.awt.image.Raster) + */ + public final Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + /** + * Returns the corresponding destination point for a source point. Because + * this is not a geometric operation, the destination and source points will + * be identical. + * + * @param src The source point. + * @param dst The transformed destination point. + * @return The transformed destination point. + */ + public final Point2D getPoint2D(Point2D src, Point2D dst) + { + if (dst == null) return (Point2D)src.clone(); + dst.setLocation(src); + return dst; + } +} diff --git a/libjava/classpath/java/awt/image/CropImageFilter.java b/libjava/classpath/java/awt/image/CropImageFilter.java new file mode 100644 index 000000000..4d8fb624f --- /dev/null +++ b/libjava/classpath/java/awt/image/CropImageFilter.java @@ -0,0 +1,184 @@ +/* CropImageFilter.java -- Java class for cropping image filter + Copyright (C) 1999, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Rectangle; +import java.util.Hashtable; + +/** + * Currently this filter does almost nothing and needs to be implemented. + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public class CropImageFilter extends ImageFilter +{ + int x; + int y; + int width; + int height; + + /** + * Construct a new <code>CropImageFilter</code> instance. + * + * @param x the x-coordinate location of the top-left of the cropped rectangle + * @param y the y-coordinate location of the top-left of the cropped rectangle + * @param width the width of the cropped rectangle + * @param height the height of the cropped rectangle + */ + public CropImageFilter(int x, int y, int width, int height) { + this.x = x; + this.y = y; + this.width = width; + this.height = height; + } + + /** + * An <code>ImageProducer</code> indicates the size of the image + * being produced using this method. This filter overrides this + * method in order to set the dimentions to the size of the + * cropped rectangle instead of the size of the image. + * + * @param width the width of the image + * @param height the height of the image + */ + public void setDimensions(int width, int height) + { + if (consumer != null) + consumer.setDimensions(this.width, this.height); + } + + /** + * An <code>ImageProducer</code> can set a list of properties + * associated with this image by using this method. + * <br> + * FIXME - What property is set for this class? + * + * @param props the list of properties associated with this image + */ + public void setProperties(Hashtable<?, ?> props) + { + Hashtable<Object, Object> prop2 = (Hashtable<Object, Object>) props; + prop2.put("filters", "CropImageFilter"); + if (consumer != null) + consumer.setProperties(prop2); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as a <code>byte</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, int offset, int scansize) + { + Rectangle filterBounds = new Rectangle(this.x, this.y, + this.width, this.height); + Rectangle pixelBounds = new Rectangle(x, y, w, h); + + if (filterBounds.intersects(pixelBounds)) + { + Rectangle bounds = filterBounds.intersection(pixelBounds); + + byte[] cropped = new byte[bounds.width * bounds.height]; + for (int i = 0; i < bounds.height; i++) + { + int start = (bounds.y - pixelBounds.y + i) * scansize + offset; + + for (int j = 0; j < bounds.width; j++) + cropped[i * bounds.width + j] = pixels[start + bounds.x + j]; + } + + if (consumer != null) + consumer.setPixels(0, 0, + bounds.width, bounds.height, + model, cropped, 0, bounds.width); + } + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as an <code>int</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, int offset, int scansize) + { + Rectangle filterBounds = new Rectangle(this.x, this.y, + this.width, this.height); + Rectangle pixelBounds = new Rectangle(x, y, w, h); + + if (filterBounds.intersects(pixelBounds)) + { + Rectangle bounds = filterBounds.intersection(pixelBounds); + + int[] cropped = new int[bounds.width * bounds.height]; + for (int i = 0; i < bounds.height; i++) + { + int start = (bounds.y - pixelBounds.y + i) * scansize + offset; + + for (int j = 0; j < bounds.width; j++) + cropped[i * bounds.width + j] = pixels[start + bounds.x + j]; + } + + if (consumer != null) + consumer.setPixels(0, 0, + bounds.width, bounds.height, + model, cropped, 0, bounds.width); + } + } + +} diff --git a/libjava/classpath/java/awt/image/DataBuffer.java b/libjava/classpath/java/awt/image/DataBuffer.java new file mode 100644 index 000000000..78bc75ba5 --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBuffer.java @@ -0,0 +1,437 @@ +/* Copyright (C) 2000, 2002, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/** + * Class that manages arrays of data elements. A data buffer consists + * of one or more banks. A bank is a continuous region of data + * elements. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public abstract class DataBuffer +{ + /** + * A constant representing a data type that uses <code>byte</code> primitives + * as the storage unit. + */ + public static final int TYPE_BYTE = 0; + + /** + * A constant representing a data type that uses <code>short</code> + * primitives as the storage unit. + */ + public static final int TYPE_USHORT = 1; + + /** + * A constant representing a data type that uses <code>short</code> + * primitives as the storage unit. + */ + public static final int TYPE_SHORT = 2; + + /** + * A constant representing a data type that uses <code>int</code> + * primitives as the storage unit. + */ + public static final int TYPE_INT = 3; + + /** + * A constant representing a data type that uses <code>float</code> + * primitives as the storage unit. + */ + public static final int TYPE_FLOAT = 4; + + /** + * A constant representing a data type that uses <code>double</code> + * primitives as the storage unit. + */ + public static final int TYPE_DOUBLE = 5; + + /** + * A constant representing an undefined data type. + */ + public static final int TYPE_UNDEFINED = 32; + + /** The type of the data elements stored in the data buffer. */ + protected int dataType; + + /** The number of banks in this buffer. */ + protected int banks = 1; + + /** Offset into the default (0'th) bank). */ + protected int offset; // FIXME: Is offsets[0] always mirrored in offset? + + /** The size of the banks. */ + protected int size; + + /** Offset into each bank. */ + protected int[] offsets; + + /** + * Creates a new <code>DataBuffer</code> with the specified data type and + * size. The <code>dataType</code> should be one of the constants + * {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, {@link #TYPE_USHORT}, + * {@link #TYPE_INT}, {@link #TYPE_FLOAT} and {@link #TYPE_DOUBLE}. + * <p> + * The physical (array-based) storage is allocated by a subclass. + * + * @param dataType the data type. + * @param size the number of elements in the buffer. + */ + protected DataBuffer(int dataType, int size) + { + this(dataType, size, 1); + } + + /** + * Creates a new <code>DataBuffer</code> with the specified data type, + * size and number of banks. The <code>dataType</code> should be one of + * the constants {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, + * {@link #TYPE_USHORT}, {@link #TYPE_INT}, {@link #TYPE_FLOAT} and + * {@link #TYPE_DOUBLE}. + * <p> + * The physical (array-based) storage is allocated by a subclass. + * + * @param dataType the data type. + * @param size the number of elements in the buffer. + * @param numBanks the number of data banks. + */ + protected DataBuffer(int dataType, int size, int numBanks) { + this(dataType, size, numBanks, 0); + } + + /** + * Creates a new <code>DataBuffer</code> with the specified data type, + * size and number of banks. An offset (which applies to all banks) is + * also specified. The <code>dataType</code> should be one of + * the constants {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, + * {@link #TYPE_USHORT}, {@link #TYPE_INT}, {@link #TYPE_FLOAT} and + * {@link #TYPE_DOUBLE}. + * <p> + * The physical (array-based) storage is allocated by a subclass. + * + * @param dataType the data type. + * @param size the number of elements in the buffer. + * @param numBanks the number of data banks. + * @param offset the offset to the first element for all banks. + */ + protected DataBuffer(int dataType, int size, int numBanks, int offset) { + banks = numBanks; + this.dataType = dataType; + this.size = size; + this.offset = offset; + + offsets = new int[ numBanks ]; + for(int i = 0; i < numBanks; i++ ) + offsets[i] = offset; + } + + /** + * Creates a new <code>DataBuffer</code> with the specified data type, + * size and number of banks. An offset (which applies to all banks) is + * also specified. The <code>dataType</code> should be one of + * the constants {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, + * {@link #TYPE_USHORT}, {@link #TYPE_INT}, {@link #TYPE_FLOAT} and + * {@link #TYPE_DOUBLE}. + * <p> + * The physical (array-based) storage is allocated by a subclass. + * + * @param dataType the data type. + * @param size the number of elements in the buffer. + * @param numBanks the number of data banks. + * @param offsets the offsets to the first element for all banks. + * + * @throws ArrayIndexOutOfBoundsException if + * <code>numBanks != offsets.length</code>. + */ + protected DataBuffer(int dataType, int size, int numBanks, int[] offsets) { + if (numBanks != offsets.length) + throw new ArrayIndexOutOfBoundsException(); + + this.dataType = dataType; + this.size = size; + banks = numBanks; + this.offsets = offsets; + + offset = offsets[0]; + } + + /** + * Returns the size (number of bits) of the specified data type. Valid types + * are defined by the constants {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, + * {@link #TYPE_USHORT}, {@link #TYPE_INT}, {@link #TYPE_FLOAT} and + * {@link #TYPE_DOUBLE}. + * + * @param dataType the data type. + * @return The number of bits for the specified data type. + * @throws IllegalArgumentException if <code>dataType < 0</code> or + * <code>dataType > TYPE_DOUBLE</code>. + */ + public static int getDataTypeSize(int dataType) { + // Maybe this should be a lookup table instead. + switch (dataType) + { + case TYPE_BYTE: + return 8; + case TYPE_USHORT: + case TYPE_SHORT: + return 16; + case TYPE_INT: + case TYPE_FLOAT: + return 32; + case TYPE_DOUBLE: + return 64; + default: + throw new IllegalArgumentException(); + } + } + + /** + * Returns the type of the data elements in the data buffer. Valid types + * are defined by the constants {@link #TYPE_BYTE}, {@link #TYPE_SHORT}, + * {@link #TYPE_USHORT}, {@link #TYPE_INT}, {@link #TYPE_FLOAT} and + * {@link #TYPE_DOUBLE}. + * + * @return The type. + */ + public int getDataType() + { + return dataType; + } + + /** + * Returns the size of the data buffer. + * + * @return The size. + */ + public int getSize() + { + return size; + } + + /** + * Returns the element offset for the first data bank. + * + * @return The element offset. + */ + public int getOffset() + { + return offset; + } + + /** + * Returns the offsets for all the data banks used by this + * <code>DataBuffer</code>. + * + * @return The offsets. + */ + public int[] getOffsets() + { + if (offsets == null) + { + // is this necessary? + offsets = new int[1]; + offsets[0] = offset; + } + return offsets; + } + + /** + * Returns the number of data banks for this <code>DataBuffer</code>. + * @return The number of data banks. + */ + public int getNumBanks() + { + return banks; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return getElem(0, i); + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public abstract int getElem(int bank, int i); + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + setElem(0, i, val); + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public abstract void setElem(int bank, int i, int val); + + /** + * Returns an element from the first data bank, converted to a + * <code>float</code>. The offset (specified in the constructor) is added + * to <code>i</code> before accessing the underlying data array. + * + * @param i the element index. + * @return The element. + */ + public float getElemFloat(int i) + { + return getElem(i); + } + + /** + * Returns an element from a particular data bank, converted to a + * <code>float</code>. The offset (specified in the constructor) is + * added to <code>i</code> before accessing the underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public float getElemFloat(int bank, int i) + { + return getElem(bank, i); + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElemFloat(int i, float val) + { + setElem(i, (int) val); + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElemFloat(int bank, int i, float val) + { + setElem(bank, i, (int) val); + } + + /** + * Returns an element from the first data bank, converted to a + * <code>double</code>. The offset (specified in the constructor) is added + * to <code>i</code> before accessing the underlying data array. + * + * @param i the element index. + * @return The element. + */ + public double getElemDouble(int i) + { + return getElem(i); + } + + /** + * Returns an element from a particular data bank, converted to a + * <code>double</code>. The offset (specified in the constructor) is + * added to <code>i</code> before accessing the underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public double getElemDouble(int bank, int i) + { + return getElem(bank, i); + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElemDouble(int i, double val) + { + setElem(i, (int) val); + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElemDouble(int bank, int i, double val) + { + setElem(bank, i, (int) val); + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferByte.java b/libjava/classpath/java/awt/image/DataBufferByte.java new file mode 100644 index 000000000..01364b07a --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferByte.java @@ -0,0 +1,245 @@ +/* Copyright (C) 2000, 2002 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>byte</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public final class DataBufferByte extends DataBuffer +{ + private byte[] data; + private byte[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>byte</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferByte(int size) + { + super(TYPE_BYTE, size, 1, 0); + bankData = new byte[1][]; + data = new byte[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>byte</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferByte(int size, int numBanks) + { + super(TYPE_BYTE, size, numBanks); + bankData = new byte[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + */ + public DataBufferByte(byte[] dataArray, int size) + { + super(TYPE_BYTE, size, 1, 0); + bankData = new byte[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + */ + public DataBufferByte(byte[] dataArray, int size, int offset) + { + super(TYPE_BYTE, size, 1, offset); + bankData = new byte[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferByte(byte[][] dataArray, int size) + { + super(TYPE_BYTE, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferByte(byte[][] dataArray, int size, int[] offsets) + { + super(TYPE_BYTE, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public byte[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public byte[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public byte[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return data[i+offset] & 0xff; // get unsigned byte as int + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + // get unsigned byte as int + return bankData[bank][i+offsets[bank]] & 0xff; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = (byte) val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = (byte) val; + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferDouble.java b/libjava/classpath/java/awt/image/DataBufferDouble.java new file mode 100644 index 000000000..31c5ebd8c --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferDouble.java @@ -0,0 +1,288 @@ +/* Copyright (C) 2004, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>double</code> primitives + * to represent each of its banks. + * + * @since 1.4 + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @author Sascha Brawer (brawer@dandelis.ch) + */ +public final class DataBufferDouble + extends DataBuffer +{ + private double[] data; + private double[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>double</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferDouble(int size) + { + super(TYPE_DOUBLE, size, 1, 0); + bankData = new double[1][]; + data = new double[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>double</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferDouble(int size, int numBanks) + { + super(TYPE_DOUBLE, size, numBanks); + bankData = new double[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + */ + public DataBufferDouble(double[] dataArray, int size) + { + super(TYPE_DOUBLE, size, 1, 0); + bankData = new double[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + */ + public DataBufferDouble(double[] dataArray, int size, int offset) + { + super(TYPE_DOUBLE, size, 1, offset); + bankData = new double[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferDouble(double[][] dataArray, int size) + { + super(TYPE_DOUBLE, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferDouble(double[][] dataArray, int size, int[] offsets) + { + super(TYPE_DOUBLE, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public double[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public double[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public double[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return (int) data[i+offset]; + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + return (int) bankData[bank][i+offsets[bank]]; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = val; + } + + public float getElemFloat(int i) + { + return (float) data[i+offset]; + } + + public float getElemFloat(int bank, int i) + { + return (float) bankData[bank][i+offsets[bank]]; + } + + public void setElemFloat(int i, float val) + { + data[i+offset] = val; + } + + public void setElemFloat(int bank, int i, float val) + { + bankData[bank][i+offsets[bank]] = val; + } + + public double getElemDouble(int i) + { + return data[i + offset]; + } + + public double getElemDouble(int bank, int i) + { + return bankData[bank][i + offsets[bank]]; + } + + public void setElemDouble(int i, double val) + { + data[i + offset] = val; + } + + public void setElemDouble(int bank, int i, double val) + { + bankData[bank][i + offsets[bank]] = val; + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferFloat.java b/libjava/classpath/java/awt/image/DataBufferFloat.java new file mode 100644 index 000000000..44a0a3892 --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferFloat.java @@ -0,0 +1,286 @@ +/* Copyright (C) 2004, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>float</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @author Sascha Brawer (brawer@dandelis.ch) + */ +public final class DataBufferFloat + extends DataBuffer +{ + private float[] data; + private float[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>float</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferFloat(int size) + { + super(TYPE_FLOAT, size, 1, 0); + bankData = new float[1][]; + data = new float[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>float</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferFloat(int size, int numBanks) + { + super(TYPE_FLOAT, size, numBanks); + bankData = new float[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + */ + public DataBufferFloat(float[] dataArray, int size) + { + super(TYPE_FLOAT, size, 1, 0); + bankData = new float[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + */ + public DataBufferFloat(float[] dataArray, int size, int offset) + { + super(TYPE_FLOAT, size, 1, offset); + bankData = new float[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferFloat(float[][] dataArray, int size) + { + super(TYPE_FLOAT, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferFloat(float[][] dataArray, int size, int[] offsets) + { + super(TYPE_FLOAT, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public float[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public float[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public float[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return (int) data[i+offset]; + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + return (int) bankData[bank][i+offsets[bank]]; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = val; + } + + public float getElemFloat(int i) + { + return data[i+offset]; + } + + public float getElemFloat(int bank, int i) + { + return bankData[bank][i+offsets[bank]]; + } + + public void setElemFloat(int i, float val) + { + data[i+offset] = val; + } + + public void setElemFloat(int bank, int i, float val) + { + bankData[bank][i+offsets[bank]] = val; + } + + public double getElemDouble(int i) + { + return getElemFloat(i); + } + + public double getElemDouble(int bank, int i) + { + return getElemFloat(bank, i); + } + + public void setElemDouble(int i, double val) + { + setElemFloat(i, (float) val); + } + + public void setElemDouble(int bank, int i, double val) + { + setElemFloat(bank, i, (float) val); + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferInt.java b/libjava/classpath/java/awt/image/DataBufferInt.java new file mode 100644 index 000000000..db9d5bc30 --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferInt.java @@ -0,0 +1,244 @@ +/* Copyright (C) 2000, 2002, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>int</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public final class DataBufferInt extends DataBuffer +{ + private int[] data; + private int[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>int</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferInt(int size) + { + super(TYPE_INT, size, 1, 0); + bankData = new int[1][]; + data = new int[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>int</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferInt(int size, int numBanks) + { + super(TYPE_INT, size, numBanks); + bankData = new int[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + */ + public DataBufferInt(int[] dataArray, int size) + { + super(TYPE_INT, size, 1, 0); + bankData = new int[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + */ + public DataBufferInt(int[] dataArray, int size, int offset) + { + super(TYPE_INT, size, 1, offset); + bankData = new int[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferInt(int[][] dataArray, int size) + { + super(TYPE_INT, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferInt(int[][] dataArray, int size, int[] offsets) + { + super(TYPE_INT, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public int[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public int[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public int[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The <code>offset</code> is + * added to the specified index before accessing the underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return data[i+offset]; + } + + /** + * Returns an element from a particular data bank. The <code>offset</code> + * is added to the specified index before accessing the underlying data + * array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + // get unsigned int as int + return bankData[bank][i+offsets[bank]]; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = val; + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferShort.java b/libjava/classpath/java/awt/image/DataBufferShort.java new file mode 100644 index 000000000..2156d7571 --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferShort.java @@ -0,0 +1,245 @@ +/* DataBufferShort.java -- + Copyright (C) 2004, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>short</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public final class DataBufferShort extends DataBuffer +{ + private short[] data; + private short[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>short</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferShort(int size) + { + super(TYPE_SHORT, size, 1, 0); + bankData = new short[1][]; + data = new short[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>short</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferShort(int size, int numBanks) + { + super(TYPE_SHORT, size, numBanks); + bankData = new short[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + */ + public DataBufferShort(short[] dataArray, int size) + { + super(TYPE_SHORT, size, 1, 0); + bankData = new short[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * <p> + * Note: there is no exception when <code>dataArray</code> is + * <code>null</code>, but in that case an exception will be thrown + * later if you attempt to access the data buffer. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + */ + public DataBufferShort(short[] dataArray, int size, int offset) + { + super(TYPE_SHORT, size, 1, offset); + bankData = new short[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferShort(short[][] dataArray, int size) + { + super(TYPE_SHORT, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferShort(short[][] dataArray, int size, int[] offsets) + { + super(TYPE_SHORT, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public short[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public short[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public short[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return data[i+offset]; + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + return bankData[bank][i+offsets[bank]]; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = (short) val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = (short) val; + } +} diff --git a/libjava/classpath/java/awt/image/DataBufferUShort.java b/libjava/classpath/java/awt/image/DataBufferUShort.java new file mode 100644 index 000000000..d2cadcf0b --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferUShort.java @@ -0,0 +1,246 @@ +/* DataBufferUShort.java -- + Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/* This is one of several classes that are nearly identical. Maybe we + should have a central template and generate all these files. This + is one of the cases where templates or macros would have been + useful to have in Java. + + This file has been created using search-replace. My only fear is + that these classes will grow out-of-sync as of a result of changes + that are not propagated to the other files. As always, mirroring + code is a maintenance nightmare. */ + +/** + * A {@link DataBuffer} that uses an array of <code>short</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public final class DataBufferUShort extends DataBuffer +{ + private short[] data; + private short[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>short</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferUShort(int size) + { + super(TYPE_USHORT, size, 1, 0); + bankData = new short[1][]; + data = new short[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>short</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferUShort(int size, int numBanks) + { + super(TYPE_USHORT, size, numBanks); + bankData = new short[numBanks][size]; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data bank. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if dataArray is null + */ + public DataBufferUShort(short[] dataArray, int size) + { + super(TYPE_USHORT, size, 1, 0); + if (dataArray == null) + throw new NullPointerException(); + bankData = new short[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data bank, with + * the specified offset to the first element. + * + * @param dataArray the data bank. + * @param size the number of elements in the data bank. + * @param offset the offset to the first element in the array. + * + * @throws NullPointerException if dataArray is null + */ + public DataBufferUShort(short[] dataArray, int size, int offset) + { + super(TYPE_USHORT, size, 1, offset); + if (dataArray == null) + throw new NullPointerException(); + bankData = new short[1][]; + data = dataArray; + bankData[0] = data; + } + + /** + * Creates a new data buffer backed by the specified data banks. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferUShort(short[][] dataArray, int size) + { + super(TYPE_USHORT, size, dataArray.length); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Creates a new data buffer backed by the specified data banks, with + * the specified offsets to the first element in each bank. + * + * @param dataArray the data banks. + * @param size the number of elements in the data bank. + * @param offsets the offsets to the first element in each data bank. + * + * @throws NullPointerException if <code>dataArray</code> is + * <code>null</code>. + */ + public DataBufferUShort(short[][] dataArray, int size, int[] offsets) + { + super(TYPE_USHORT, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public short[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public short[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public short[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param i the element index. + * @return The element. + */ + public int getElem(int i) + { + return data[i+offset] & 0xffff; // get unsigned short as int + } + + /** + * Returns an element from a particular data bank. The offset (specified in + * the constructor) is added to <code>i</code> before accessing the + * underlying data array. + * + * @param bank the bank index. + * @param i the element index. + * @return The element. + */ + public int getElem(int bank, int i) + { + // get unsigned short as int + return bankData[bank][i+offsets[bank]] & 0xffff; + } + + /** + * Sets an element in the first data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int i, int val) + { + data[i+offset] = (short) val; + } + + /** + * Sets an element in a particular data bank. The offset (specified in the + * constructor) is added to <code>i</code> before updating the underlying + * data array. + * + * @param bank the data bank index. + * @param i the element index. + * @param val the new element value. + */ + public void setElem(int bank, int i, int val) + { + bankData[bank][i+offsets[bank]] = (short) val; + } +} diff --git a/libjava/classpath/java/awt/image/DirectColorModel.java b/libjava/classpath/java/awt/image/DirectColorModel.java new file mode 100644 index 000000000..a464fed30 --- /dev/null +++ b/libjava/classpath/java/awt/image/DirectColorModel.java @@ -0,0 +1,435 @@ +/* DirectColorModel.java -- + Copyright (C) 1999, 2000, 2002, 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.Buffers; + +import java.awt.Point; +import java.awt.Transparency; +import java.awt.color.ColorSpace; + +/** + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @author C. Brian Jones (cbj@gnu.org) + * @author Mark Benvenuto (mcb54@columbia.edu) + */ +public class DirectColorModel extends PackedColorModel +{ + /** + * For the color model created with this constructor the pixels + * will have fully opaque alpha components with a value of 255. + * Each mask should describe a fully contiguous set of bits in the + * most likely order of alpha, red, green, blue from the most significant + * byte to the least significant byte. + * + * @param pixelBits the number of bits wide used for bit size of pixel values + * @param rmask the bits describing the red component of a pixel + * @param gmask the bits describing the green component of a pixel + * @param bmask the bits describing the blue component of a pixel + */ + public DirectColorModel(int pixelBits, int rmask, int gmask, int bmask) + { + this(ColorSpace.getInstance(ColorSpace.CS_sRGB), pixelBits, + rmask, gmask, bmask, 0, + false, // not alpha premultiplied + Buffers.smallestAppropriateTransferType(pixelBits) // find type + ); + } + + /** + * For the color model created with this constructor the pixels + * will have fully opaque alpha components with a value of 255. + * Each mask should describe a fully contiguous set of bits in the + * most likely order of red, green, blue from the most significant + * byte to the least significant byte. + * + * @param pixelBits the number of bits wide used for bit size of pixel values + * @param rmask the bits describing the red component of a pixel + * @param gmask the bits describing the green component of a pixel + * @param bmask the bits describing the blue component of a pixel + * @param amask the bits describing the alpha component of a pixel + */ + public DirectColorModel(int pixelBits, + int rmask, int gmask, int bmask, int amask) + { + this(ColorSpace.getInstance(ColorSpace.CS_sRGB), pixelBits, + rmask, gmask, bmask, amask, + false, // not alpha premultiplied + Buffers.smallestAppropriateTransferType(pixelBits) // find type + ); + } + + public DirectColorModel(ColorSpace cspace, int pixelBits, + int rmask, int gmask, int bmask, int amask, + boolean isAlphaPremultiplied, + int transferType) + { + super(cspace, pixelBits, + rmask, gmask, bmask, amask, isAlphaPremultiplied, + ((amask == 0) ? Transparency.OPAQUE : Transparency.TRANSLUCENT), + transferType); + } + + public final int getRedMask() + { + return getMask(0); + } + + public final int getGreenMask() + { + return getMask(1); + } + + public final int getBlueMask() + { + return getMask(2); + } + + public final int getAlphaMask() + { + return hasAlpha() ? getMask(3) : 0; + } + + /** + * Get the red component of the given pixel. + * <br> + */ + public final int getRed(int pixel) + { + return extractAndNormalizeSample(pixel, 0); + } + + /** + * Get the green component of the given pixel. + * <br> + */ + public final int getGreen(int pixel) + { + return extractAndNormalizeSample(pixel, 1); + } + + /** + * Get the blue component of the given pixel. + * <br> + */ + public final int getBlue(int pixel) + { + return extractAndNormalizeSample(pixel, 2); + } + + /** + * Get the alpha component of the given pixel. + * <br> + */ + public final int getAlpha(int pixel) + { + if (!hasAlpha()) + return 255; + return extractAndScaleSample(pixel, 3); + } + + private int extractAndNormalizeSample(int pixel, int component) + { + int value = extractAndScaleSample(pixel, component); + if (hasAlpha() && isAlphaPremultiplied() && getAlpha(pixel) != 0) + value = value*255/getAlpha(pixel); + return value; + } + + private int extractAndScaleSample(int pixel, int component) + { + int field = pixel & getMask(component); + int to8BitShift = + 8 - shifts[component] - getComponentSize(component); + return (to8BitShift>0) ? + (field << to8BitShift) : + (field >>> (-to8BitShift)); + } + + /** + * Get the RGB color value of the given pixel using the default + * RGB color model. + * <br> + * + * @param pixel a pixel value + */ + public final int getRGB(int pixel) + { + /* FIXME: The Sun docs show that this method is overridden, but I + don't see any way to improve on the superclass + implementation. */ + return super.getRGB(pixel); + } + + public int getRed(Object inData) + { + return getRed(getPixelFromArray(inData)); + } + + public int getGreen(Object inData) + { + return getGreen(getPixelFromArray(inData)); + } + + public int getBlue(Object inData) + { + return getBlue(getPixelFromArray(inData)); + } + + public int getAlpha(Object inData) + { + return getAlpha(getPixelFromArray(inData)); + } + + public int getRGB(Object inData) + { + return getRGB(getPixelFromArray(inData)); + } + + /** + * Converts a normalized pixel int value in the sRGB color + * space to an array containing a single pixel of the color space + * of the color model. + * + * <p>This method performs the inverse function of + * <code>getRGB(Object inData)</code>. + * + * @param rgb pixel as a normalized sRGB, 0xAARRGGBB value. + * + * @param pixel to avoid needless creation of arrays, an array to + * use to return the pixel can be given. If null, a suitable array + * will be created. + * + * @return array of transferType containing a single pixel. The + * pixel should be encoded in the natural way of the color model. + * + * @see #getRGB(Object) + */ + public Object getDataElements(int rgb, Object pixel) + { + // FIXME: handle alpha multiply + + int pixelValue = 0; + int a = 0; + if (hasAlpha()) { + a = (rgb >>> 24) & 0xff; + pixelValue = valueToField(a, 3, 8); + } + + if (hasAlpha() && isAlphaPremultiplied()) + { + int r, g, b; + /* if r=0xff and a=0xff, then resulting + value will be (r*a)>>>8 == 0xfe... This seems wrong. + We should divide by 255 rather than shifting >>>8 after + multiplying. + + Too bad, shifting is probably less expensive. + r = ((rgb >>> 16) & 0xff)*a; + g = ((rgb >>> 8) & 0xff)*a; + b = ((rgb >>> 0) & 0xff)*a; */ + /* The r, g, b values we calculate are 16 bit. This allows + us to avoid discarding the lower 8 bits obtained if + multiplying with the alpha band. */ + + // using 16 bit values + r = ((rgb >>> 8) & 0xff00)*a/255; + g = ((rgb >>> 0) & 0xff00)*a/255; + b = ((rgb << 8) & 0xff00)*a/255; + pixelValue |= + valueToField(r, 0, 16) | // Red + valueToField(g, 1, 16) | // Green + valueToField(b, 2, 16); // Blue + } + else + { + int r, g, b; + // using 8 bit values + r = (rgb >>> 16) & 0xff; + g = (rgb >>> 8) & 0xff; + b = (rgb >>> 0) & 0xff; + + pixelValue |= + valueToField(r, 0, 8) | // Red + valueToField(g, 1, 8) | // Green + valueToField(b, 2, 8); // Blue + } + + /* In this color model, the whole pixel fits in the first element + of the array. */ + DataBuffer buffer = Buffers.createBuffer(transferType, pixel, 1); + buffer.setElem(0, pixelValue); + return Buffers.getData(buffer); + } + + /** + * Converts a value to the correct field bits based on the + * information derived from the field masks. + * + * @param highBit the position of the most significant bit in the + * val parameter. + */ + private int valueToField(int val, int component, int highBit) + { + int toFieldShift = + getComponentSize(component) + shifts[component] - highBit; + int ret = (toFieldShift>0) ? + (val << toFieldShift) : + (val >>> (-toFieldShift)); + return ret & getMask(component); + } + + /** + * Converts a 16 bit value to the correct field bits based on the + * information derived from the field masks. + */ + private int value16ToField(int val, int component) + { + int toFieldShift = getComponentSize(component) + shifts[component] - 16; + return (toFieldShift>0) ? + (val << toFieldShift) : + (val >>> (-toFieldShift)); + } + + /** + * Fills an array with the unnormalized component samples from a + * pixel value. I.e. decompose the pixel, but not perform any + * color conversion. + */ + public final int[] getComponents(int pixel, int[] components, int offset) + { + int numComponents = getNumComponents(); + if (components == null) components = new int[offset + numComponents]; + + for (int b=0; b<numComponents; b++) + components[offset++] = (pixel&getMask(b)) >>> shifts[b]; + + return components; + } + + public final int[] getComponents(Object pixel, int[] components, + int offset) + { + return getComponents(getPixelFromArray(pixel), components, offset); + } + + /** + * Creates a <code>WriteableRaster</code> that has a <code>SampleModel</code> + * that is compatible with this <code>ColorModel</code>. + * + * @param w the width of the writeable raster to create + * @param h the height of the writeable raster to create + * + * @throws IllegalArgumentException if <code>w</code> or <code>h</code> + * is less than or equal to zero + */ + public final WritableRaster createCompatibleWritableRaster(int w, int h) + { + // Sun also makes this check here. + if(w <= 0 || h <= 0) + throw new IllegalArgumentException("width (=" + w + ") and height (=" + + h + ") must be > 0"); + + SampleModel sm = createCompatibleSampleModel(w, h); + Point origin = new Point(0, 0); + return Raster.createWritableRaster(sm, origin); + } + + public int getDataElement(int[] components, int offset) + { + int numComponents = getNumComponents(); + int pixelValue = 0; + + for (int c=0; c<numComponents; c++) + pixelValue |= (components[offset++] << shifts[c]) & getMask(c); + + return pixelValue; + } + + public Object getDataElements(int[] components, int offset, Object obj) + { + /* In this color model, the whole pixel fits in the first element + of the array. */ + int pixelValue = getDataElement(components, offset); + + DataBuffer buffer = Buffers.createBuffer(transferType, obj, 1); + buffer.setElem(0, pixelValue); + return Buffers.getData(buffer); + } + + public final ColorModel coerceData (WritableRaster raster, + boolean isAlphaPremultiplied) + { + if (this.isAlphaPremultiplied == isAlphaPremultiplied || !hasAlpha()) + return this; + + /* TODO: provide better implementation based on the + assumptions we can make due to the specific type of the + color model. */ + coerceDataWorker(raster, isAlphaPremultiplied); + + return new DirectColorModel(cspace, pixel_bits, getRedMask(), + getGreenMask(), getBlueMask(), getAlphaMask(), + isAlphaPremultiplied, transferType); + } + + public boolean isCompatibleRaster(Raster raster) + { + /* FIXME: the Sun docs say this method is overridden here, + but I don't see any way to improve upon the implementation + in ColorModel. */ + return super.isCompatibleRaster(raster); + } + + String stringParam() + { + return super.stringParam() + + ", redMask=" + Integer.toHexString(getRedMask()) + + ", greenMask=" + Integer.toHexString(getGreenMask()) + + ", blueMask=" + Integer.toHexString(getBlueMask()) + + ", alphaMask=" + Integer.toHexString(getAlphaMask()); + } + + public String toString() + { + /* FIXME: Again, docs say override, but how do we improve upon the + superclass implementation? */ + return super.toString(); + } +} diff --git a/libjava/classpath/java/awt/image/FilteredImageSource.java b/libjava/classpath/java/awt/image/FilteredImageSource.java new file mode 100644 index 000000000..f56a93ad1 --- /dev/null +++ b/libjava/classpath/java/awt/image/FilteredImageSource.java @@ -0,0 +1,124 @@ +/* FilteredImageSource.java -- Java class for providing image data + Copyright (C) 1999 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.util.Hashtable; + +/** + * + * @see ImageConsumer + * @author C. Brian Jones (cbj@gnu.org) + */ +public class FilteredImageSource implements ImageProducer +{ + ImageProducer ip; + ImageFilter filter; + Hashtable consumers = new Hashtable(); + + /** + * The given filter is applied to the given image producer + * to create a new image producer. + */ + public FilteredImageSource(ImageProducer ip, ImageFilter filter) { + this.ip = ip; + this.filter = filter; + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code>. + */ + public synchronized void addConsumer(ImageConsumer ic) { + if (consumers.containsKey(ic)) + return; + + ImageFilter f = filter.getFilterInstance(ic); + consumers.put(ic, f); + ip.addConsumer(f); + } + + /** + * Used to determine if the given <code>ImageConsumer</code> is + * already registered with this <code>ImageProducer</code>. + */ + public synchronized boolean isConsumer(ImageConsumer ic) { + ImageFilter f = (ImageFilter)consumers.get(ic); + if (f != null) + return ip.isConsumer(f); + return false; + } + + /** + * Used to remove an <code>ImageConsumer</code> from the list of + * registered consumers for this <code>ImageProducer</code>. + */ + public synchronized void removeConsumer(ImageConsumer ic) { + ImageFilter f = (ImageFilter)consumers.remove(ic); + if (f != null) + ip.removeConsumer(f); + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then immediately start + * reconstruction of the image data to be delivered to all + * registered consumers. + */ + public void startProduction(ImageConsumer ic) { + ImageFilter f; + if (!(consumers.containsKey(ic))) { + f = filter.getFilterInstance(ic); + consumers.put(ic, f); + ip.addConsumer(f); + } else { + f = (ImageFilter)consumers.get( ic ); + } + ip.startProduction(f); + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then request that this producer + * resend the image data in the order top-down, left-right. + */ + public void requestTopDownLeftRightResend(ImageConsumer ic) { + ImageFilter f = (ImageFilter)consumers.get(ic); + ip.requestTopDownLeftRightResend(f); + } +} diff --git a/libjava/classpath/java/awt/image/ImageConsumer.java b/libjava/classpath/java/awt/image/ImageConsumer.java new file mode 100644 index 000000000..8f3c2b144 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageConsumer.java @@ -0,0 +1,216 @@ +/* ImageConsumer.java -- Java interface for image consumption + Copyright (C) 1999, 2003 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.util.Hashtable; + +/** + * An object implementing the <code>ImageProducer</code> interface can + * use objects implementing this interface to deliver the image data. + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public interface ImageConsumer +{ + /** + * The pixel order may be random. This should be + * the default assumption of the <code>ImageConsumer</code>. + * + * @see #setHints + */ + int RANDOMPIXELORDER = 1; + + /** + * The pixel order is top-down, left-right. + * + * @see #setHints + */ + int TOPDOWNLEFTRIGHT = 2; + + /** + * The pixel order is in multiples of complete scanlines. + * + * @see #setHints + */ + int COMPLETESCANLINES = 4; + + /** + * The pixels will be delivered in a single pass. There is at + * most one call to <code>setPixels</code> for any single pixel. + * + * @see #setHints + * @see #setPixels(int, int, int, int, ColorModel, int[], int, int) + */ + int SINGLEPASS = 8; + + /** + * The pixels will be delivered with multiple calls to + * <code>setPixels</code>. The image contains a single frame + * which ends when <code>imageComplete</code> is called with the + * <code>STATICIMAGEDONE</code> flag. If the image is constantly + * changing such as with video then the end of each frame is + * marked by a similar call to <code>imageComplete</code> with the + * <code>SINGLEFRAMEDONE</code> flag. + * + * @see #setHints + * @see #imageComplete + */ + int SINGLEFRAME = 16; + + /** + * Indicates an error occurred while producing an image. + * + * @see #imageComplete + */ + int IMAGEERROR = 1; + + /** + * A single frame is complete but more will follow. + * + * @see #imageComplete + */ + int SINGLEFRAMEDONE = 2; + + /** + * The image is complete and no more pixels or frames will follow. + * + * @see #imageComplete + */ + int STATICIMAGEDONE = 3; + + /** + * Production of the image has been aborted. + * + * @see #imageComplete + */ + int IMAGEABORTED = 4; + + /** + * An <code>ImageProducer</code> indicates the size of the image + * being produced using this method. + * + * @param width the width of the image + * @param height the height of the image + */ + void setDimensions(int width, int height); + + /** + * An <code>ImageProducer</code> can set a list of properties + * associated with this image by using this method. + * + * @param props the list of properties associated with this image + */ + void setProperties(Hashtable<?,?> props); + + /** + * This <code>ColorModel</code> should indicate the model used by + * the majority of calls to <code>setPixels</code>. Each call to + * <code>setPixels</code> could however indicate a different + * <code>ColorModel</code>. + * + * @param model the color model to be used most often by setPixels + * @see ColorModel + */ + void setColorModel(ColorModel model); + + /** + * The <code>ImageProducer</code> should call this method with a + * bit mask of hints from any of <code>RANDOMPIXELORDER</code>, + * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>, + * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code>. + * + * @param flags a bit mask of hints + */ + void setHints(int flags); + + /** + * Deliver a subset of an ImageProducer's pixels to this ImageConsumer. + * + * Each element of the pixels array represents one pixel. The + * pixel data is formatted according to the color model model. + * The x and y parameters are the coordinates of the block of + * pixels being delivered to this ImageConsumer. They are + * specified relative to the top left corner of the image being + * produced. Likewise, w and h are the pixel block's dimensions. + * + * @param x x coordinate of pixel block + * @param y y coordinate of pixel block + * @param w width of pixel block + * @param h height of pixel block + * @param model color model used to interpret pixel data + * @param pixels pixel block data + * @param offset offset into pixels array + * @param scansize width of one row in the pixel block + */ + void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, int offset, int scansize); + + /** + * Deliver a subset of an ImageProducer's pixels to this ImageConsumer. + * + * Each element of the pixels array represents one pixel. The + * pixel data is formatted according to the color model model. + * The x and y parameters are the coordinates of the rectangular + * region of pixels being delivered to this ImageConsumer, + * specified relative to the top left corner of the image being + * produced. Likewise, w and h are the pixel region's dimensions. + * + * @param x x coordinate of pixel block + * @param y y coordinate of pixel block + * @param w width of pixel block + * @param h height of pixel block + * @param model color model used to interpret pixel data + * @param pixels pixel block data + * @param offset offset into pixels array + * @param scansize width of one row in the pixel block + */ + void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, int offset, int scansize); + + /** + * The <code>ImageProducer</code> calls this method to indicate a + * single frame or the entire image is complete. The method is + * also used to indicate an error in loading or producing the + * image. + * + * @param status the status of image production, represented by a + * bitwise OR of ImageConsumer flags + */ + void imageComplete(int status); +} diff --git a/libjava/classpath/java/awt/image/ImageFilter.java b/libjava/classpath/java/awt/image/ImageFilter.java new file mode 100644 index 000000000..10df82e25 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageFilter.java @@ -0,0 +1,226 @@ +/* ImageFilter.java -- Java class for filtering images + Copyright (C) 1999 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.util.Hashtable; + +/** + * The <code>ImageFilter</code> class is a base class which can be + * extended to provide different types of filters for an image. By + * default this class does nothing to an image passing through it. + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public class ImageFilter implements ImageConsumer, Cloneable +{ + /** + * The consumer this filter is filtering an image data stream for. + * It is initialized in the method <code>getFilterInstance</code>. + */ + protected ImageConsumer consumer = null; + + /** + * The <code>ImageConsumer</code> can use this method to request + * the pixels be delivered in top-down, left-right order. + * <br> + * The filter can respond in three different ways. + * <ul> + * <li>The default behavior is to forward the request to the + * <code>ImageProducer</code> + * using the method <code>requestTopDownLeftRightResend</code> + * and using the filter as the consumer.</li> + * <li>The filter has the pixels and can retransmit them in the + * top-down, left-right order.</li> + * <li>The filter can do nothing when this method is called.</li> + * </ul> + */ + public void resendTopDownLeftRight(ImageProducer ip) + { + ip.requestTopDownLeftRightResend(this); + } + + /** + * By default, returns a shallow copy of the object created by + * <code>Object.clone()</code> + * + * @see java.lang.Object#clone () + */ + public Object clone() + { + try + { + return super.clone(); + } + catch (CloneNotSupportedException e) + { + // This should never happen as this class implements the + // Cloneable interface. + throw new InternalError (); + } + } + + /** + * This is the only method which can set the + * <code>ImageConsumer</code> for this filter. By default a clone + * of this filter with the appropriate consumer set is returned. + * + * @see #clone () + */ + public ImageFilter getFilterInstance(ImageConsumer ic) + { + ImageFilter f = (ImageFilter)clone(); + f.consumer = ic; + return f; + } + + /** + * An <code>ImageProducer</code> indicates the size of the image + * being produced using this method. A filter can override this + * method to intercept these calls from the producer in order to + * change either the width or the height before in turn calling + * the consumer's <code>setDimensions</code> method. + * + * @param width the width of the image + * @param height the height of the image + */ + public void setDimensions(int width, int height) + { + consumer.setDimensions(width, height); + } + + /** + * An <code>ImageProducer</code> can set a list of properties + * associated with this image by using this method. + * + * @param props the list of properties associated with this image + */ + public void setProperties(Hashtable<?,?> props) + { + Hashtable copy = (Hashtable) props.clone(); + Object o = copy.get("filters"); + if (o == null) + copy.put("filters", toString()); + else if (o instanceof String) + copy.put("filters", ((String) o) + toString()); + + consumer.setProperties(copy); + } + + /** + * Override this method to process calls to this method from the + * <code>ImageProducer</code>. By default the <code>setColorModel</code> + * method of the consumer is called with the specified <code>model</code>. + * + * @param model the color model to be used most often by setPixels + * + * @see ColorModel + */ + public void setColorModel(ColorModel model) + { + consumer.setColorModel(model); + } + + /** + * The <code>ImageProducer</code> should call this method with a + * bit mask of hints from any of <code>RANDOMPIXELORDER</code>, + * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>, + * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code> from the + * <code>ImageConsumer</code> interface. + * + * @param flags a bit mask of hints + * @see ImageConsumer + */ + public void setHints(int flags) + { + consumer.setHints(flags); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as a <code>byte</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, int offset, + int scansize) + { + consumer.setPixels(x, y, w, h, model, pixels, offset, scansize); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as an <code>int</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, int offset, + int scansize) + { + consumer.setPixels(x, y, w, h, model, pixels, offset, scansize); + } + + /** + * The <code>ImageProducer</code> calls this method to indicate a + * single frame or the entire image is complete. The method is + * also used to indicate an error in loading or producing the + * image. + */ + public void imageComplete(int status) + { + consumer.imageComplete(status); + } +} diff --git a/libjava/classpath/java/awt/image/ImageObserver.java b/libjava/classpath/java/awt/image/ImageObserver.java new file mode 100644 index 000000000..e63d4bba1 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageObserver.java @@ -0,0 +1,129 @@ +/* ImageObserver.java -- Java interface for asynchronous updates to an image + Copyright (C) 1999 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Image; + +/** + * An object implementing the <code>ImageObserver</code> interface can + * receive updates on image construction from an + * <code>ImageProducer</code> asynchronously. + * + * @see ImageProducer + * @author C. Brian Jones (cbj@gnu.org) + */ +public interface ImageObserver +{ + /** + * The width of the image has been provided as the + * <code>width</code> argument to <code>imageUpdate</code>. + * + * @see #imageUpdate + */ + int WIDTH = 1; + + /** + * The height of the image has been provided as the + * <code>height</code> argument to <code>imageUpdate</code>. + * + * @see #imageUpdate + */ + int HEIGHT = 2; + + /** + * The properties of the image have been provided. + * + * @see #imageUpdate + * @see java.awt.Image#getProperty (java.lang.String, java.awt.image.ImageObserver) + */ + int PROPERTIES = 4; + + /** + * More pixels are now available for drawing a scaled variation of + * the image. + * + * @see #imageUpdate + */ + int SOMEBITS = 8; + + /** + * All the pixels needed to draw a complete frame of a multi-frame + * image are available. + * + * @see #imageUpdate + */ + int FRAMEBITS = 16; + + /** + * An image with a single frame, a static image, is complete. + * + * @see #imageUpdate + */ + int ALLBITS = 32; + + /** + * An error was encountered while producing the image. + * + * @see #imageUpdate + */ + int ERROR = 64; + + /** + * Production of the image was aborted. + * + * @see #imageUpdate + */ + int ABORT = 128; + + /** + * This is a callback method for an asynchronous image producer to + * provide updates on the production of the image as it happens. + * + * @param image the image the update refers to + * @param flags a bit mask indicating what is provided with this update + * @param x the x coordinate of the image + * @param y the y coordinate of the image + * @param width the width of the image + * @param height the height of the image + * + * @see java.awt.Image + */ + boolean imageUpdate(Image image, int flags, int x, + int y, int width, int height); +} diff --git a/libjava/classpath/java/awt/image/ImageProducer.java b/libjava/classpath/java/awt/image/ImageProducer.java new file mode 100644 index 000000000..c0f9ad4c7 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageProducer.java @@ -0,0 +1,84 @@ +/* ImageProducer.java -- Java interface for image production + Copyright (C) 1999 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * An object implementing the <code>ImageProducer</code> interface can + * produce data for images. Each image has a corresponding + * <code>ImageProducer</code> which is needed for things such as + * resizing the image. + * + * @see ImageConsumer + * @author C. Brian Jones (cbj@gnu.org) + */ +public interface ImageProducer +{ + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code>. + */ + void addConsumer(ImageConsumer ic); + + /** + * Used to determine if the given <code>ImageConsumer</code> is + * already registered with this <code>ImageProducer</code>. + */ + boolean isConsumer(ImageConsumer ic); + + /** + * Used to remove an <code>ImageConsumer</code> from the list of + * registered consumers for this <code>ImageProducer</code>. + */ + void removeConsumer(ImageConsumer ic); + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then immediately start + * reconstruction of the image data to be delivered to all + * registered consumers. + */ + void startProduction(ImageConsumer ic); + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then request that this producer + * resend the image data in the order top-down, left-right. + */ + void requestTopDownLeftRightResend(ImageConsumer ic); +} diff --git a/libjava/classpath/java/awt/image/ImagingOpException.java b/libjava/classpath/java/awt/image/ImagingOpException.java new file mode 100644 index 000000000..ca40e9ed3 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImagingOpException.java @@ -0,0 +1,66 @@ +/* ImagingOpException.java -- indicates an imaging filter failure + Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * This exception is thrown when <code>BufferedImageOp</code> or + * <code>RasterOp</code> filters cannot process an image. + * + * @author Eric Blake (ebb9@email.byu.edu) + * @see BufferedImageOp + * @see RasterOp + * @status updated to 1.4 + */ +public class ImagingOpException extends RuntimeException +{ + /** + * Compatible with JDK 1.0+. + */ + private static final long serialVersionUID = 8026288481846276658L; + + /** + * Create a new instance with a descriptive error message. + * + * @param message the descriptive error message + */ + public ImagingOpException(String message) + { + super(message); + } +} // class ImagingOpException diff --git a/libjava/classpath/java/awt/image/IndexColorModel.java b/libjava/classpath/java/awt/image/IndexColorModel.java new file mode 100644 index 000000000..340d38e89 --- /dev/null +++ b/libjava/classpath/java/awt/image/IndexColorModel.java @@ -0,0 +1,736 @@ +/* IndexColorModel.java -- Java class for interpreting Pixel objects + Copyright (C) 1999, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import gnu.java.awt.Buffers; + +import java.awt.color.ColorSpace; +import java.math.BigInteger; + +/** + * Color model similar to pseudo visual in X11. + * <br><br> + * This color model maps linear pixel values to actual RGB and alpha colors. + * Thus, pixel values are indexes into the color map. Each color component is + * an 8-bit unsigned value. + * <br><br> + * The <code>IndexColorModel</code> supports a map of valid pixels, allowing + * the representation of holes in the the color map. The valid map is + * represented as a {@link BigInteger} where each bit indicates the validity + * of the map entry with the same index. + * <br><br> + * Colors can have alpha components for transparency support. If alpha + * component values aren't given, color values are opaque. The model also + * supports a reserved pixel value to represent completely transparent colors, + * no matter what the actual color component values are. + * <br><br> + * <code>IndexColorModel</code> supports anywhere from 1 to 16 bit index + * values. The allowed transfer types are {@link DataBuffer#TYPE_BYTE} and + * {@link DataBuffer#TYPE_USHORT}. + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public class IndexColorModel extends ColorModel +{ + private int map_size; + private boolean opaque; // no alpha, but doesn't account for trans + private int trans = -1; + private int[] rgb; + private BigInteger validBits = BigInteger.ZERO; + + /** + * Creates a new indexed color model for <code>size</code> color elements + * with no alpha component. Each array must contain at least + * <code>size</code> elements. For each array, the i-th color is described + * by reds[i], greens[i] and blues[i]. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors. + * @param size the number of colors in the color map. + * @param reds the red component of all colors. + * @param greens the green component of all colors. + * @param blues the blue component of all colors. + * + * @throws IllegalArgumentException if <code>bits</code> < 1 or + * <code>bits</code> > 16. + * @throws NullPointerException if any of the arrays is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>size</code> is greater + * than the length of the component arrays. + */ + public IndexColorModel(int bits, int size, byte[] reds, byte[] greens, + byte[] blues) + { + this(bits, size, reds, greens, blues, (byte[]) null); + } + + /** + * Creates a new indexed color model for <code>size</code> color elements. + * Each array must contain at least <code>size</code> elements. For each + * array, the i-th color is described by reds[i], greens[i] and blues[i]. + * All the colors are opaque except for the transparent color. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors + * @param size the number of colors in the color map + * @param reds the red component of all colors + * @param greens the green component of all colors + * @param blues the blue component of all colors + * @param trans the index of the transparent color (use -1 for no + * transparent color). + * + * @throws IllegalArgumentException if <code>bits</code> < 1 or + * <code>bits</code> > 16. + * @throws NullPointerException if any of the arrays is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>size</code> is greater + * than the length of the component arrays. + */ + public IndexColorModel(int bits, int size, byte[] reds, byte[] greens, + byte[] blues, int trans) + { + super(bits, nArray(8, (0 <= trans && trans < size) ? 4 : 3), + ColorSpace.getInstance(ColorSpace.CS_sRGB), + (0 <= trans && trans < size), // hasAlpha + false, OPAQUE, + Buffers.smallestAppropriateTransferType(bits)); + if (bits < 1) + throw new IllegalArgumentException("bits < 1"); + if (bits > 16) + throw new IllegalArgumentException("bits > 16"); + if (size < 1) + throw new IllegalArgumentException("size < 1"); + map_size = size; + rgb = createColorMap(bits, size); + for (int i = 0; i < size; i++) + { + rgb[i] = (0xff000000 + | ((reds[i] & 0xff) << 16) + | ((greens[i] & 0xff) << 8) + | (blues[i] & 0xff)); + } + + setTransparentPixel(trans); + + // Generate a bigint with 1's for every pixel + validBits = validBits.setBit(size).subtract(BigInteger.ONE); + } + + /** + * Creates a new indexed color model for <code>size</code> color elements + * including alpha. Each array must contain at least <code>size</code> + * elements. For each array, the i-th color is described + * by reds[i], greens[i], blues[i] and alphas[i]. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors. + * @param size the number of colors in the color map. + * @param reds the red component of all colors. + * @param greens the green component of all colors. + * @param blues the blue component of all colors. + * @param alphas the alpha component of all colors (<code>null</code> + * permitted). + * + * @throws IllegalArgumentException if <code>bits</code> < 1 or + * <code>bits</code> > 16. + * @throws NullPointerException if <code>reds</code>, <code>greens</code> or + * <code>blues</code> is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>size</code> is greater + * than the length of the component arrays. + */ + public IndexColorModel(int bits, int size, byte[] reds, byte[] greens, + byte[] blues, byte[] alphas) + { + super(bits, nArray(8, (alphas == null ? 3 : 4)), + ColorSpace.getInstance(ColorSpace.CS_sRGB), + (alphas != null), false, TRANSLUCENT, + Buffers.smallestAppropriateTransferType(bits)); + if (bits < 1) + throw new IllegalArgumentException("bits < 1"); + if (bits > 16) + throw new IllegalArgumentException("bits > 16"); + if (size < 1) + throw new IllegalArgumentException("size < 1"); + map_size = size; + opaque = (alphas == null); + + rgb = createColorMap(bits, size); + if (alphas == null) + { + for (int i = 0; i < size; i++) + { + rgb[i] = (0xff000000 + | ((reds[i] & 0xff) << 16) + | ((greens[i] & 0xff) << 8) + | (blues[i] & 0xff)); + } + transparency = OPAQUE; + } + else + { + byte alphaZero = (byte) 0x00; + byte alphaOne = (byte) 0xFF; + for (int i = 0; i < size; i++) + { + alphaZero = (byte) (alphaZero | alphas[i]); + alphaOne = (byte) (alphaOne & alphas[i]); + rgb[i] = ((alphas[i] & 0xff) << 24 + | ((reds[i] & 0xff) << 16) + | ((greens[i] & 0xff) << 8) + | (blues[i] & 0xff)); + } + if ((alphaZero == (byte) 0x00) || (alphaOne == (byte) 0xFF)) + transparency = BITMASK; + else + transparency = TRANSLUCENT; + } + + // Generate a bigint with 1's for every pixel + validBits = validBits.setBit(size).subtract(BigInteger.ONE); + } + + /** + * Creates a new indexed color model using the color components in + * <code>cmap</code>. If <code>hasAlpha</code> is <code>true</code> then + * <code>cmap</code> contains an alpha component after each of the red, green + * and blue components. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors + * @param size the number of colors in the color map + * @param cmap packed color components + * @param start the offset of the first color component in <code>cmap</code> + * @param hasAlpha <code>cmap</code> has alpha values + * @throws IllegalArgumentException if bits < 1, bits > 16, or size + * < 1. + * @throws NullPointerException if <code>cmap</code> is <code>null</code>. + */ + public IndexColorModel(int bits, int size, byte[] cmap, int start, + boolean hasAlpha) + { + this(bits, size, cmap, start, hasAlpha, -1); + } + + /** + * Construct an IndexColorModel from an array of red, green, blue, and + * optional alpha components. The component values are interleaved as RGB(A). + * + * @param bits the number of bits needed to represent <code>size</code> + * colors + * @param size the number of colors in the color map + * @param cmap interleaved color components + * @param start the offset of the first color component in <code>cmap</code> + * @param hasAlpha <code>cmap</code> has alpha values + * @param trans the index of the transparent color + * @throws IllegalArgumentException if bits < 1, bits > 16, or size + * < 1. + * @throws NullPointerException if <code>cmap</code> is <code>null</code>. + */ + public IndexColorModel(int bits, int size, byte[] cmap, int start, + boolean hasAlpha, int trans) + { + super(bits, nArray(8, hasAlpha || (0 <= trans && trans < size) ? 4 : 3), + ColorSpace.getInstance(ColorSpace.CS_sRGB), + hasAlpha || (0 <= trans && trans < size), false, OPAQUE, + Buffers.smallestAppropriateTransferType(bits)); + if (bits < 1) + throw new IllegalArgumentException("bits < 1"); + if (bits > 16) + throw new IllegalArgumentException("bits > 16"); + if (size < 1) + throw new IllegalArgumentException("size < 1"); + map_size = size; + opaque = !hasAlpha; + + rgb = createColorMap(bits, size); + if (hasAlpha) + { + int alpha; + int alphaZero = 0x00; // use to detect all zeros + int alphaOne = 0xff; // use to detect all ones + for (int i = 0; i < size; i++) { + alpha = cmap[4 * i + 3 + start] & 0xff; + alphaZero = alphaZero | alpha; + alphaOne = alphaOne & alpha; + rgb[i] = + ( alpha << 24 + // red + | ((cmap[4 * i + start] & 0xff) << 16) + // green + | ((cmap[4 * i + 1 + start] & 0xff) << 8) + // blue + | (cmap[4 * i + 2 + start] & 0xff)); + } + if (alphaZero == 0) + transparency = BITMASK; + else if (alphaOne == 255) + transparency = (trans != -1 ? BITMASK : OPAQUE); + else + transparency = TRANSLUCENT; + } + else + { + for (int i = 0; i < size; i++) + rgb[i] = (0xff000000 + // red + | ((cmap[3 * i + start] & 0xff) << 16) + // green + | ((cmap[3 * i + 1 + start] & 0xff) << 8) + // blue + | (cmap[3 * i + 2 + start] & 0xff)); + if (trans != -1) + transparency = BITMASK; + } + + setTransparentPixel(trans); + + // Generate a bigint with 1's for every pixel + validBits = validBits.setBit(size).subtract(BigInteger.ONE); + } + + /** + * Construct an IndexColorModel from an array of <code>size</code> packed + * colors. Each int element contains 8-bit red, green, blue, and optional + * alpha values packed in order. If hasAlpha is false, then all the colors + * are opaque except for the transparent color. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors + * @param size the number of colors in the color map + * @param cmap packed color components + * @param start the offset of the first color component in <code>cmap</code> + * @param hasAlpha <code>cmap</code> has alpha values + * @param trans the index of the transparent color + * @param transferType {@link DataBuffer#TYPE_BYTE} or + {@link DataBuffer#TYPE_USHORT}. + * @throws IllegalArgumentException if bits < 1, bits > 16, or size + * < 1. + * @throws IllegalArgumentException if <code>transferType</code> is something + * other than {@link DataBuffer#TYPE_BYTE} or + * {@link DataBuffer#TYPE_USHORT}. + */ + public IndexColorModel(int bits, int size, int[] cmap, int start, + boolean hasAlpha, int trans, int transferType) + { + super(bits, + nArray(8, 4), // bits for each channel + ColorSpace.getInstance(ColorSpace.CS_sRGB), // sRGB + true, // has alpha + false, // not premultiplied + TRANSLUCENT, transferType); + if (transferType != DataBuffer.TYPE_BYTE + && transferType != DataBuffer.TYPE_USHORT) + throw new IllegalArgumentException(); + if (bits > 16) + throw new IllegalArgumentException("bits > 16"); + if (size < 1) + throw new IllegalArgumentException("size < 1"); + map_size = size; + opaque = !hasAlpha; + rgb = createColorMap(bits, size); + if (!hasAlpha) + for (int i = 0; i < size; i++) + rgb[i] = cmap[i + start] | 0xff000000; + else + System.arraycopy(cmap, start, rgb, 0, size); + + setTransparentPixel(trans); + + // Generate a bigint with 1's for every pixel + validBits = validBits.setBit(size).subtract(BigInteger.ONE); + } + + /** + * Construct an IndexColorModel using a colormap with holes. + * <br><br> + * The IndexColorModel is built from the array of ints defining the + * colormap. Each element contains red, green, blue, and alpha + * components. The ColorSpace is sRGB. The transparency value is + * automatically determined. + * <br><br> + * This constructor permits indicating which colormap entries are valid, + * using the validBits argument. Each entry in cmap is valid if the + * corresponding bit in validBits is set. + * + * @param bits the number of bits needed to represent <code>size</code> + * colors. + * @param size the number of colors in the color map. + * @param cmap packed color components. + * @param start the offset of the first color component in <code>cmap</code>. + * @param transferType {@link DataBuffer#TYPE_BYTE} or + * {@link DataBuffer#TYPE_USHORT}. + * @param validBits a map of the valid entries in <code>cmap</code>. + * @throws IllegalArgumentException if bits < 1, bits > 16, or size + * < 1. + * @throws IllegalArgumentException if transferType is something other than + * {@link DataBuffer#TYPE_BYTE} or {@link DataBuffer#TYPE_USHORT}. + */ + public IndexColorModel(int bits, int size, int[] cmap, int start, + int transferType, BigInteger validBits) + { + super(bits, // total bits, sRGB, four channels + nArray(8, 4), // bits for each channel + ColorSpace.getInstance(ColorSpace.CS_sRGB), // sRGB + true, // has alpha + false, // not premultiplied + TRANSLUCENT, transferType); + if (transferType != DataBuffer.TYPE_BYTE + && transferType != DataBuffer.TYPE_USHORT) + throw new IllegalArgumentException(); + if (bits > 16) + throw new IllegalArgumentException("bits > 16"); + if (size < 1) + throw new IllegalArgumentException("size < 1"); + map_size = size; + opaque = false; + this.trans = -1; + this.validBits = validBits; + + rgb = createColorMap(bits, size); + if (!hasAlpha) + for (int i = 0; i < size; i++) + rgb[i] = cmap[i + start] | 0xff000000; + else + System.arraycopy(cmap, start, rgb, 0, size); + } + + /** + * Returns the size of the color lookup table. + * + * @return The size of the color lookup table. + */ + public final int getMapSize() + { + return map_size; + } + + /** + * Get the index of the transparent color in this color model. + * + * @return The index of the color that is considered transparent, or -1 if + * there is no transparent color. + */ + public final int getTransparentPixel() + { + return trans; + } + + /** + * Fills the supplied array with the red component of each color in the + * lookup table. + * + * @param r an array that is at least as large as {@link #getMapSize()}. + * @throws NullPointerException if <code>r</code> is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>r</code> has less + * than {@link #getMapSize()} elements. + */ + public final void getReds(byte[] r) + { + int i; + for (i = 0; i < map_size; i++) + r[i] = (byte) ((0x00FF0000 & rgb[i]) >> 16); + } + + /** + * Fills the supplied array with the green component of each color in the + * lookup table. + * + * @param g an array that is at least as large as {@link #getMapSize()}. + * @throws NullPointerException if <code>g</code> is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>g</code> has less + * than {@link #getMapSize()} elements. + */ + public final void getGreens(byte[] g) + { + int i; + for (i = 0; i < map_size; i++) + g[i] = (byte) ((0x0000FF00 & rgb[i]) >> 8); + } + + /** + * Fills the supplied array with the blue component of each color in the + * lookup table. + * + * @param b an array that is at least as large as {@link #getMapSize()}. + * @throws NullPointerException if <code>b</code> is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>b</code> has less + * than {@link #getMapSize()} elements. + */ + public final void getBlues(byte[] b) + { + int i; + for (i = 0; i < map_size; i++) + b[i] = (byte) (0x000000FF & rgb[i]); + } + + /** + * Fills the supplied array with the alpha component of each color in the + * lookup table. If the model has a transparent pixel specified, the alpha + * for that pixel will be 0. + * + * @param a an array that is at least as large as {@link #getMapSize()}. + * @throws NullPointerException if <code>a</code> is <code>null</code>. + * @throws ArrayIndexOutOfBoundsException if <code>a</code> has less + * than {@link #getMapSize()} elements. + */ + public final void getAlphas(byte[] a) + { + int i; + for (i = 0; i < map_size; i++) + if (i == trans) + a[i] = (byte) 0; + else + a[i] = (byte) ((0xFF000000 & rgb[i]) >> 24); + } + + /** + * Returns the red component of the color in the lookup table for the + * given pixel value. + * + * @param pixel the pixel lookup value. + * + * @return The red component of the color in the lookup table. + * @throws ArrayIndexOutOfBoundsException if <code>pixel</code> is negative. + */ + public final int getRed(int pixel) + { + if (pixel < map_size) + return (0x00FF0000 & rgb[pixel]) >> 16; + + return 0; + } + + /** + * Returns the green component of the color in the lookup table for the + * given pixel value. + * + * @param pixel the pixel lookup value. + * + * @return The green component of the color in the lookup table. + * @throws ArrayIndexOutOfBoundsException if <code>pixel</code> is negative. + */ + public final int getGreen(int pixel) + { + if (pixel < map_size) + return (0x0000FF00 & rgb[pixel]) >> 8; + + return 0; + } + + /** + * Returns the blue component of the color in the lookup table for the + * given pixel value. + * + * @param pixel the pixel lookup value. + * + * @return The blue component of the color in the lookup table. + * @throws ArrayIndexOutOfBoundsException if <code>pixel</code> is negative. + */ + public final int getBlue(int pixel) + { + if (pixel < map_size) + return 0x000000FF & rgb[pixel]; + + return 0; + } + + /** + * Returns the alpha component of the color in the lookup table for the + * given pixel value. If no alpha channel was specified when the color model + * was created, then 255 is returned for all pixels except the transparent + * pixel (if one is defined - see {@link #getTransparentPixel()}) which + * returns an alpha of 0. + * + * @param pixel the pixel lookup value. + * + * @return The alpha component of the color in the lookup table (in the + * range 0 to 255). + * @throws ArrayIndexOutOfBoundsException if <code>pixel</code> is negative. + */ + public final int getAlpha(int pixel) + { + return (rgb[pixel] >> 24) & 0xFF; + } + + /** + * Get the RGB color value of the given pixel using the default + * RGB color model. + * + * @param pixel the pixel lookup value. + * @return The RGB color value. + * @throws ArrayIndexOutOfBoundsException if <code>pixel</code> is negative. + */ + public final int getRGB(int pixel) + { + if (pixel >= 0 && pixel < map_size) + return rgb[pixel]; + + return 0; + } + + /** + * Get the RGB color values of all pixels in the map using the default + * RGB color model. + * + * @param rgb The destination array. + */ + public final void getRGBs(int[] rgb) + { + System.arraycopy(this.rgb, 0, rgb, 0, map_size); + } + + /** + * Return <code>true</code> if the lookup table contains valid data for + * <code>pixel</code>, and <code>false</code> otherwise. + * + * @param pixel the pixel value used to index the color lookup table. + * @return <code>true</code> if <code>pixel</code> is valid, + * <code>false</code> otherwise. + */ + public boolean isValid(int pixel) + { + if (pixel >= 0) + return validBits.testBit(pixel); + return false; + } + + /** + * Return <code>true</code> if all pixels are valid, <code>false</code> + * otherwise. + * + * @return <code>true</code> if all pixels are valid, <code>false</code> + * otherwise. + */ + public boolean isValid() + { + // Generate a bigint with 1's for every pixel + BigInteger allbits = new BigInteger("0"); + allbits = allbits.setBit(map_size); + allbits = allbits.subtract(new BigInteger("1")); + return allbits.equals(validBits); + } + + /** + * Returns a binary value ({@link BigInteger}) where each bit represents an + * entry in the color lookup table. If the bit is on, the entry is valid. + * + * @return The binary value. + */ + public BigInteger getValidPixels() + { + return validBits; + } + + /** + * Construct a {@link BufferedImage} with rgb pixel values from a + * {@link Raster}. + * + * Constructs a new BufferedImage in which each pixel is an RGBA int from + * a Raster with index-valued pixels. If this model has no alpha component + * or transparent pixel, the type of the new BufferedImage is TYPE_INT_RGB. + * Otherwise the type is TYPE_INT_ARGB. If forceARGB is true, the type is + * forced to be TYPE_INT_ARGB no matter what. + * + * @param raster The source of pixel values. + * @param forceARGB True if type must be TYPE_INT_ARGB. + * @return New BufferedImage with RBGA int pixel values. + */ + public BufferedImage convertToIntDiscrete(Raster raster, boolean forceARGB) + { + int type = forceARGB ? BufferedImage.TYPE_INT_ARGB + : ((opaque && trans == -1) ? BufferedImage.TYPE_INT_RGB : + BufferedImage.TYPE_INT_ARGB); + + // FIXME: assuming that raster has only 1 band since pixels are supposed + // to be int indexes. + // FIXME: it would likely be more efficient to fetch a complete array, + // but it would take much more memory. + // FIXME: I'm not sure if transparent pixels or alpha values need special + // handling here. + BufferedImage im = new BufferedImage(raster.width, raster.height, type); + for (int x = raster.minX; x < raster.width + raster.minX; x++) + for (int y = raster.minY; y < raster.height + raster.minY; y++) + im.setRGB(x, y, rgb[raster.getSample(x, y, 0)]); + + return im; + } + + /** + * Creates a {@link SampleModel} that is compatible to this color model. + * This will be a {@link MultiPixelPackedSampleModel} for bits/pixel of + * 1, 2 or 4, or a {@link ComponentColorModel} for the other cases. + * + * @param w the width of the sample model to create + * @param h the height of the sample model to create + * + * @return a compatible sample model + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + SampleModel sm; + if (pixel_bits == 1 || pixel_bits == 2 || pixel_bits == 4) + sm = new MultiPixelPackedSampleModel(transferType, w, h, pixel_bits); + else + sm = new ComponentSampleModel(transferType, w, h, 1, w, new int[]{0}); + return sm; + } + + /** + * Sets the transparent pixel. This is called by the various constructors. + * + * @param t the transparent pixel + */ + private void setTransparentPixel(int t) + { + if (t >= 0 && t < map_size) + { + rgb[t] &= 0xffffff; // Make the value transparent. + trans = t; + if (transparency == OPAQUE) + { + transparency = BITMASK; + hasAlpha = true; + } + } + } + + private int[] createColorMap(int bits, int size) + { + // According to a Mauve test, the RI allocates at least 256 entries here. + int realSize = Math.max(256, Math.max(1 << bits, size)); + return new int[realSize]; + } +} diff --git a/libjava/classpath/java/awt/image/Kernel.java b/libjava/classpath/java/awt/image/Kernel.java new file mode 100644 index 000000000..ae0ff1469 --- /dev/null +++ b/libjava/classpath/java/awt/image/Kernel.java @@ -0,0 +1,171 @@ +/* Kernel.java -- Java class for an image processing kernel + Copyright (C) 2004, 2005, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * Kernel represents an image processing kernel. It gets used to hold + * convolution filters among other purposes. It stores an array of float + * values representing a 2-dimensional array in row-major order. + * + * @author Jerry Quinn (jlquinn@optonline.net) + */ +public class Kernel implements Cloneable +{ + /** The kernel width. */ + private final int width; + + /** The kernel height. */ + private final int height; + + /** Internal storage for the kernel's values. */ + private final float[] data; + + /** + * Creates a new <code>Kernel</code> instance with the specified dimensions + * and values. The first <code>width * height</code> values in the specified + * <code>data</code> array are copied to internal storage. + * + * @param width the kernel width. + * @param height the kernel height. + * @param data the source data array (<code>null</code> not permitted). + * + * @throws IllegalArgumentException if <code>data.length</code> is less than + * <code>width * height</code>. + * @throws IllegalArgumentException if <code>width</code> or + * <code>height</code> is less than zero. + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public Kernel(int width, int height, float[] data) + throws IllegalArgumentException + { + this.width = width; + this.height = height; + if (data.length < width * height || width < 0 || height < 0) + throw new IllegalArgumentException(); + this.data = new float[width * height]; + System.arraycopy(data, 0, this.data, 0, width * height); + } + + /** + * Returns the x-origin for the kernel, which is calculated as + * <code>(width - 1) / 2</code>. + * + * @return The x-origin for the kernel. + */ + public final int getXOrigin() + { + return (width - 1) / 2; + } + + /** + * Returns the y-origin for the kernel, which is calculated as + * <code>(height - 1) / 2</code>. + * + * @return The y-origin for the kernel. + */ + public final int getYOrigin() + { + return (height - 1) / 2; + } + + /** + * Returns the kernel width (as supplied to the constructor). + * + * @return The kernel width. + */ + public final int getWidth() + { + return width; + } + + /** + * Returns the kernel height (as supplied to the constructor). + * + * @return The kernel height. + */ + public final int getHeight() + { + return height; + } + + /** + * Returns an array containing a copy of the kernel data. If the + * <code>data</code> argument is non-<code>null</code>, the kernel values + * are copied into it and then <code>data</code> is returned as the result. + * If the <code>data</code> argument is <code>null</code>, this method + * allocates a new array then populates and returns it. + * + * @param data an array to copy the return values into (if + * <code>null</code>, a new array is allocated). + * + * @return The array with copied values. + * + * @throws IllegalArgumentException if <code>data.length</code> is less than + * the kernel's <code>width * height</code>. + */ + public final float[] getKernelData(float[] data) + throws IllegalArgumentException + { + if (data == null) + return (float[]) this.data.clone(); + + if (data.length < this.data.length) + throw new IllegalArgumentException(); + + System.arraycopy(this.data, 0, data, 0, this.data.length); + return data; + } + + /** + * Returns a clone of this kernel. + * + * @return a clone of this Kernel. + */ + public Object clone() + { + try + { + return super.clone(); + } + catch (CloneNotSupportedException e) + { + throw (Error) new InternalError().initCause(e); // Impossible + } + } +} diff --git a/libjava/classpath/java/awt/image/LookupOp.java b/libjava/classpath/java/awt/image/LookupOp.java new file mode 100644 index 000000000..0bc79a00b --- /dev/null +++ b/libjava/classpath/java/awt/image/LookupOp.java @@ -0,0 +1,307 @@ +/* LookupOp.java -- Filter that converts each pixel using a lookup table. + Copyright (C) 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; + +/** + * LookupOp is a filter that converts each pixel using a lookup table. + * + * For filtering Rasters, the lookup table must have either one component + * that is applied to all bands, or one component for every band in the + * Rasters. + * + * For BufferedImages, the lookup table may apply to both color and alpha + * components. If the lookup table contains one component, or if there are + * the same number of components as color components in the source, the table + * applies to all color components. Otherwise the table applies to all + * components including alpha. Alpha premultiplication is ignored during the + * lookup filtering. + * + * After filtering, if color conversion is necessary, the conversion happens, + * taking alpha premultiplication into account. + * + * @author jlquinn + */ +public class LookupOp implements BufferedImageOp, RasterOp +{ + private LookupTable lut; + private RenderingHints hints; + + /** + * Construct a new LookupOp using the given LookupTable. + * + * @param lookup LookupTable to use. + * @param hints Rendering hints (can be null). + */ + public LookupOp(LookupTable lookup, RenderingHints hints) + { + lut = lookup; + this.hints = hints; + } + + /** + * Converts the source image using the lookup table specified in the + * constructor. The resulting image is stored in the destination image if one + * is provided; otherwise a new BufferedImage is created and returned. + * + * The source image cannot use an IndexColorModel, and the destination image + * (if one is provided) must have the same size. + * + * @param src The source image. + * @param dst The destination image. + * @throws IllegalArgumentException if the rasters and/or color spaces are + * incompatible. + * @throws ArrayIndexOutOfBoundsException if a pixel in the source is not + * contained in the LookupTable. + * @return The convolved image. + */ + public final BufferedImage filter(BufferedImage src, BufferedImage dst) + { + if (src.getColorModel() instanceof IndexColorModel) + throw new IllegalArgumentException("LookupOp.filter: IndexColorModel " + + "not allowed"); + + if (lut.getNumComponents() != 1 + && lut.getNumComponents() != src.getColorModel().getNumComponents() + && lut.getNumComponents() != src.getColorModel().getNumColorComponents()) + throw new IllegalArgumentException("LookupOp.filter: Incompatible " + + "lookup table and source image"); + + if (dst == null) + dst = createCompatibleDestImage(src, null); + + else if (src.getHeight() != dst.getHeight() || src.getWidth() != dst.getWidth()) + throw new IllegalArgumentException("Source and destination images are " + + "different sizes."); + + // Set up for potential colormodel mismatch + BufferedImage tgt; + if (dst.getColorModel().equals(src.getColorModel())) + tgt = dst; + else + tgt = createCompatibleDestImage(src, src.getColorModel()); + + Raster sr = src.getRaster(); + WritableRaster dr = tgt.getRaster(); + + if (src.getColorModel().hasAlpha() && + (lut.getNumComponents() == 1 || + lut.getNumComponents() == src.getColorModel().getNumColorComponents())) + { + // Need to ignore alpha for lookup + int[] dbuf = new int[src.getColorModel().getNumComponents()]; + int tmpBands = src.getColorModel().getNumColorComponents(); + int[] tmp = new int[tmpBands]; + + // Filter the pixels + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + { + // Filter only color components, but also copy alpha + sr.getPixel(x, y, dbuf); + System.arraycopy(dbuf, 0, tmp, 0, tmpBands); + dr.setPixel(x, y, lut.lookupPixel(tmp, dbuf)); + + /* The reference implementation does not use LookupTable.lookupPixel, + * but rather it seems to copy the table into a native array. The + * effect of this (a probable bug in their implementation) is that + * an out-of-bounds lookup on a ByteLookupTable will *not* throw an + * out of bounds exception, but will instead return random garbage. + * A bad lookup on a ShortLookupTable, however, will throw an + * exception. + * + * Instead of mimicing this behaviour, we always throw an + * ArrayOutofBoundsException by virtue of using + * LookupTable.lookupPixle. + */ + } + } + else + { + // No alpha to ignore + int[] dbuf = new int[src.getColorModel().getNumComponents()]; + + // Filter the pixels + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + dr.setPixel(x, y, lut.lookupPixel(sr.getPixel(x, y, dbuf), dbuf)); + } + + if (tgt != dst) + new ColorConvertOp(hints).filter(tgt, dst); + + return dst; + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#getBounds2D(java.awt.image.BufferedImage) + */ + public final Rectangle2D getBounds2D(BufferedImage src) + { + return src.getRaster().getBounds(); + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#createCompatibleDestImage(java.awt.image.BufferedImage, java.awt.image.ColorModel) + */ + public BufferedImage createCompatibleDestImage(BufferedImage src, + ColorModel dstCM) + { + if (dstCM != null) + return new BufferedImage(dstCM, + src.getRaster().createCompatibleWritableRaster(), + src.isAlphaPremultiplied(), null); + + // This is a strange exception, done for compatibility with the reference + // (as demonstrated by a mauve testcase) + int imgType = src.getType(); + if (imgType == BufferedImage.TYPE_USHORT_GRAY) + imgType = BufferedImage.TYPE_BYTE_GRAY; + + return new BufferedImage(src.getWidth(), src.getHeight(), imgType); + } + + /** + * Returns the corresponding destination point for a given source point. + * + * This Op will return the source point unchanged. + * + * @param src The source point. + * @param dst The destination point. + */ + public final Point2D getPoint2D(Point2D src, Point2D dst) + { + if (dst == null) + return (Point2D) src.clone(); + + dst.setLocation(src); + return dst; + } + + /** + * Return the LookupTable for this op. + * + * @return The lookup table. + */ + public final LookupTable getTable() + { + return lut; + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getRenderingHints() + */ + public final RenderingHints getRenderingHints() + { + return hints; + } + + /** + * Filter a raster through a lookup table. + * + * Applies the lookup table for this Rasterop to each pixel of src and + * puts the results in dest. If dest is null, a new Raster is created and + * returned. + * + * @param src The source raster. + * @param dest The destination raster. + * @return The WritableRaster with the filtered pixels. + * @throws IllegalArgumentException if lookup table has more than one + * component but not the same as src and dest. + * @throws ArrayIndexOutOfBoundsException if a pixel in the source is not + * contained in the LookupTable. + */ + public final WritableRaster filter(Raster src, WritableRaster dest) + { + if (dest == null) + // Allocate a raster if needed + dest = createCompatibleDestRaster(src); + else + if (src.getNumBands() != dest.getNumBands()) + throw new IllegalArgumentException("Source and destination rasters " + + "are incompatible."); + + if (lut.getNumComponents() != 1 + && lut.getNumComponents() != src.getNumBands()) + throw new IllegalArgumentException("Lookup table is incompatible with " + + "this raster."); + + // Allocate pixel storage. + int[] tmp = new int[src.getNumBands()]; + + // Filter the pixels + for (int y = src.getMinY(); y < src.getHeight() + src.getMinY(); y++) + for (int x = src.getMinX(); x < src.getWidth() + src.getMinX(); x++) + dest.setPixel(x, y, lut.lookupPixel(src.getPixel(x, y, tmp), tmp)); + + /* The reference implementation does not use LookupTable.lookupPixel, + * but rather it seems to copy the table into a native array. The + * effect of this (a probable bug in their implementation) is that + * an out-of-bounds lookup on a ByteLookupTable will *not* throw an + * out of bounds exception, but will instead return random garbage. + * A bad lookup on a ShortLookupTable, however, will throw an + * exception. + * + * Instead of mimicing this behaviour, we always throw an + * ArrayOutofBoundsException by virtue of using + * LookupTable.lookupPixle. + */ + return dest; + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getBounds2D(java.awt.image.Raster) + */ + public final Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#createCompatibleDestRaster(java.awt.image.Raster) + */ + public WritableRaster createCompatibleDestRaster(Raster src) + { + return src.createCompatibleWritableRaster(); + } + +} diff --git a/libjava/classpath/java/awt/image/LookupTable.java b/libjava/classpath/java/awt/image/LookupTable.java new file mode 100644 index 000000000..d104b2fd5 --- /dev/null +++ b/libjava/classpath/java/awt/image/LookupTable.java @@ -0,0 +1,109 @@ +/* LookupTable.java -- Java class for a pixel translation table. + Copyright (C) 2004, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * LookupTable represents translation arrays for pixel values. It wraps one + * or more data arrays for each layer (or component) in an image, such as + * Alpha, R, G, and B. When doing translation, the offset is subtracted from + * the pixel values to allow a subset of an array to be used. + * + * @see ByteLookupTable + * @see ShortLookupTable + * + * @author Jerry Quinn (jlquinn@optonline.net) + * @version 1.0 + */ +public abstract class LookupTable +{ + // Not protected since that's part of the public API. + int offset; + int numComponents; + + /** + * Creates a new <code>LookupTable</code> instance. + * + * If numComponents is 1, the same translation table is used for all pixel + * components. + * + * @param offset Offset to be subtracted. + * @param numComponents Number of image components. + * @exception IllegalArgumentException if offset < 0 or numComponents < 1. + */ + protected LookupTable(int offset, int numComponents) + throws IllegalArgumentException + { + if (offset < 0 || numComponents < 1) + throw new IllegalArgumentException(); + this.offset = offset; + this.numComponents = numComponents; + } + + /** Return the number of components. */ + public int getNumComponents() + { + return numComponents; + } + + /** Return the offset. */ + public int getOffset() + { + return offset; + } + + + /** + * Return translated values for a pixel. + * + * For each value in the pixel src, use the value minus offset as an index + * in the component array and copy the value there to the output for the + * component. If dest is null, the output is a new array, otherwise the + * translated values are written to dest. Dest can be the same array as + * src. + * + * For example, if the pixel src is [2, 4, 3], and offset is 1, the output + * is [comp1[1], comp2[3], comp3[2]], where comp1, comp2, and comp3 are the + * translation arrays. + * + * @param src Component values of a pixel. + * @param dest Destination array for values, or null. + * @return Translated values for the pixel. + */ + public abstract int[] lookupPixel(int[] src, int[] dest); +} diff --git a/libjava/classpath/java/awt/image/MemoryImageSource.java b/libjava/classpath/java/awt/image/MemoryImageSource.java new file mode 100644 index 000000000..e8780f6f5 --- /dev/null +++ b/libjava/classpath/java/awt/image/MemoryImageSource.java @@ -0,0 +1,429 @@ +/* MemoryImageSource.java -- Java class for providing image data + Copyright (C) 1999, 2004, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.util.Hashtable; +import java.util.Vector; + +/** + * An image producer that delivers image data from an array. + */ +public class MemoryImageSource implements ImageProducer +{ + private boolean animated = false; + private boolean fullbuffers = false; + private int[] pixeli; + private int width; + private int height; + private int offset; + private int scansize; + private byte[] pixelb; + private ColorModel cm; + private Hashtable props = new Hashtable(); + private Vector consumers = new Vector(); + + /** + * Construct an image producer that reads image data from a byte + * array. + * + * @param w width of image + * @param h height of image + * @param cm the color model used to represent pixel values + * @param pix a byte array of pixel values + * @param off the offset into the array at which the first pixel is stored + * @param scan the number of array elements that represents a single pixel row + */ + public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off, + int scan) + { + this(w, h, cm, pix, off, scan, null); + } + + /** + * Constructs an ImageProducer from memory. + * + * @param w the image width. + * @param h the image height. + * @param cm the color model. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + */ + public MemoryImageSource(int w, int h, ColorModel cm, byte[] pix, int off, + int scan, Hashtable<?,?> props) + { + width = w; + height = h; + this.cm = cm; + offset = off; + scansize = scan; + this.props = props; + int max = ((scansize > width) ? scansize : width); + pixelb = pix; + } + + /** + * Construct an image producer that reads image data from an + * integer array. + * + * @param w width of image + * @param h height of image + * @param cm the color model used to represent pixel values + * @param pix an integer array of pixel values + * @param off the offset into the array at which the first pixel is stored + * @param scan the number of array elements that represents a single pixel row + */ + public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off, + int scan) + { + this(w, h, cm, pix, off, scan, null); + } + + /** + * Constructs an ImageProducer from memory + * + * @param w the image width. + * @param h the image height. + * @param cm the color model. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + */ + public MemoryImageSource(int w, int h, ColorModel cm, int[] pix, int off, + int scan, Hashtable<?,?> props) + { + width = w; + height = h; + this.cm = cm; + offset = off; + scansize = scan; + this.props = props; + int max = ((scansize > width) ? scansize : width); + pixeli = pix; + } + + /** + * Constructs an ImageProducer from memory using the default RGB ColorModel. + * + * @param w the image width. + * @param h the image height. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + * @param props image properties (<code>null</code> permitted). + + */ + public MemoryImageSource(int w, int h, int[] pix, int off, int scan, + Hashtable<?,?> props) + { + this(w, h, ColorModel.getRGBdefault(), pix, off, scan, props); + } + + /** + * Constructs an ImageProducer from memory using the default RGB ColorModel. + * + * @param w the image width. + * @param h the image height. + * @param pix the image data. + * @param off the offset to the first pixel in the array. + * @param scan the number of array elements from a pixel on one row to the + * corresponding pixel on the next row. + */ + public MemoryImageSource(int w, int h, int[] pix, int off, int scan) + { + this(w, h, ColorModel.getRGBdefault(), pix, off, scan, null); + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code>. + * + * @param ic the image consumer. + */ + public synchronized void addConsumer(ImageConsumer ic) + { + if (consumers.contains(ic)) + return; + + consumers.addElement(ic); + } + + /** + * Used to determine if the given <code>ImageConsumer</code> is + * already registered with this <code>ImageProducer</code>. + * + * @param ic the image consumer. + */ + public synchronized boolean isConsumer(ImageConsumer ic) + { + if (consumers.contains(ic)) + return true; + return false; + } + + /** + * Used to remove an <code>ImageConsumer</code> from the list of + * registered consumers for this <code>ImageProducer</code>. + * + * @param ic the image consumer. + */ + public synchronized void removeConsumer(ImageConsumer ic) + { + consumers.removeElement(ic); + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then immediately start + * reconstruction of the image data to be delivered to all + * registered consumers. + */ + public void startProduction(ImageConsumer ic) + { + if (! (consumers.contains(ic))) + consumers.addElement(ic); + + Vector list = (Vector) consumers.clone(); + for (int i = 0; i < list.size(); i++) + { + ic = (ImageConsumer) list.elementAt(i); + sendPicture(ic); + if (animated) + ic.imageComplete(ImageConsumer.SINGLEFRAMEDONE); + else + ic.imageComplete(ImageConsumer.STATICIMAGEDONE); + } + } + + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code> and then request that this producer + * resend the image data in the order top-down, left-right. + * + * @param ic the image consumer. + */ + public void requestTopDownLeftRightResend(ImageConsumer ic) + { + startProduction(ic); + } + + /** + * Changes a flag to indicate whether this MemoryImageSource supports + * animations. + * + * @param animated A flag indicating whether this class supports animations + */ + public synchronized void setAnimated(boolean animated) + { + this.animated = animated; + } + + /** + * A flag to indicate whether or not to send full buffer updates when + * sending animation. If this flag is set then full buffers are sent + * in the newPixels methods instead of just regions. + * + * @param fullbuffers a flag indicating whether to send the full buffers + */ + public synchronized void setFullBufferUpdates(boolean fullbuffers) + { + this.fullbuffers = fullbuffers; + } + + /** + * Send an animation frame to the image consumers. + */ + public void newPixels() + { + if (animated == true) + { + ImageConsumer ic; + Vector list = (Vector) consumers.clone(); + for (int i = 0; i < list.size(); i++) + { + ic = (ImageConsumer) list.elementAt(i); + sendPicture(ic); + ic.imageComplete(ImageConsumer.SINGLEFRAME); + } + } + } + + private void sendPicture(ImageConsumer ic) + { + ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT); + if (props != null) + ic.setProperties(props); + ic.setDimensions(width, height); + ic.setColorModel(cm); + if (pixeli != null) + ic.setPixels(0, 0, width, height, cm, pixeli, offset, scansize); + else + ic.setPixels(0, 0, width, height, cm, pixelb, offset, scansize); + } + + /** + * Send an animation frame to the image consumers containing the specified + * pixels unless setFullBufferUpdates is set. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param w the width. + * @param h the height. + */ + public synchronized void newPixels(int x, int y, int w, int h) + { + if (animated == true) + { + if (fullbuffers) + newPixels(); + else + { + ImageConsumer ic; + Vector list = (Vector) consumers.clone(); + for (int i = 0; i < list.size(); i++) + { + ic = (ImageConsumer) list.elementAt(i); + ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT); + if (props != null) + ic.setProperties(props); + if (pixeli != null) + { + int[] pixelbuf = new int[w * h]; + for (int row = y; row < y + h; row++) + System.arraycopy(pixeli, row * scansize + x + offset, + pixelbuf, 0, w * h); + ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w); + } + else + { + byte[] pixelbuf = new byte[w * h]; + for (int row = y; row < y + h; row++) + System.arraycopy(pixelb, row * scansize + x + offset, + pixelbuf, 0, w * h); + + ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w); + } + ic.imageComplete(ImageConsumer.SINGLEFRAME); + } + } + } + } + + /** + * Send an animation frame to the image consumers containing the specified + * pixels unless setFullBufferUpdates is set. + * + * If framenotify is set then a notification is sent when the frame + * is sent otherwise no status is sent. + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * @param w the width. + * @param h the height. + * @param framenotify send notification? + */ + public synchronized void newPixels(int x, int y, int w, int h, + boolean framenotify) + { + if (animated == true) + { + if (fullbuffers) + newPixels(); + else + { + ImageConsumer ic; + Vector list = (Vector) consumers.clone(); + for (int i = 0; i < list.size(); i++) + { + ic = (ImageConsumer) list.elementAt(i); + ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT); + if (props != null) + ic.setProperties(props); + if (pixeli != null) + { + int[] pixelbuf = new int[w * h]; + for (int row = y; row < y + h; row++) + System.arraycopy(pixeli, row * scansize + x + offset, + pixelbuf, 0, w * h); + ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w); + } + else + { + byte[] pixelbuf = new byte[w * h]; + for (int row = y; row < y + h; row++) + System.arraycopy(pixelb, row * scansize + x + offset, + pixelbuf, 0, w * h); + ic.setPixels(x, y, w, h, cm, pixelbuf, 0, w); + } + if (framenotify == true) + ic.imageComplete(ImageConsumer.SINGLEFRAME); + } + } + } + } + + public synchronized void newPixels(byte[] newpix, ColorModel newmodel, + int offset, int scansize) + { + pixeli = null; + pixelb = newpix; + cm = newmodel; + this.offset = offset; + this.scansize = scansize; + if (animated == true) + newPixels(); + } + + public synchronized void newPixels(int[] newpix, ColorModel newmodel, + int offset, int scansize) + { + pixelb = null; + pixeli = newpix; + cm = newmodel; + this.offset = offset; + this.scansize = scansize; + if (animated == true) + newPixels(); + } +} diff --git a/libjava/classpath/java/awt/image/MultiPixelPackedSampleModel.java b/libjava/classpath/java/awt/image/MultiPixelPackedSampleModel.java new file mode 100644 index 000000000..592611cbb --- /dev/null +++ b/libjava/classpath/java/awt/image/MultiPixelPackedSampleModel.java @@ -0,0 +1,603 @@ +/* Copyright (C) 2004, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import gnu.java.awt.Buffers; +import gnu.java.lang.CPStringBuilder; + +/** + * MultiPixelPackedSampleModel provides a single band model that supports + * multiple pixels in a single unit. Pixels have 2^n bits and 2^k pixels fit + * per data element. + * + * @author Jerry Quinn (jlquinn@optonline.net) + */ +public class MultiPixelPackedSampleModel extends SampleModel +{ + private int scanlineStride; + private int[] bitMasks; + private int[] bitOffsets; + private int[] sampleSize; + private int dataBitOffset; + private int elemBits; + private int numberOfBits; + private int numElems; + + /** + * Creates a new <code>MultiPixelPackedSampleModel</code> with the specified + * data type, which should be one of: + * <ul> + * <li>{@link DataBuffer#TYPE_BYTE};</li> + * <li>{@link DataBuffer#TYPE_USHORT};</li> + * <li>{@link DataBuffer#TYPE_INT};</li> + * </ul> + * + * @param dataType the data type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param numberOfBits the number of bits per pixel (must be a power of 2). + */ + public MultiPixelPackedSampleModel(int dataType, int w, int h, + int numberOfBits) + { + this(dataType, w, h, numberOfBits, 0, 0); + } + + /** + * Creates a new <code>MultiPixelPackedSampleModel</code> with the specified + * data type, which should be one of: + * <ul> + * <li>{@link DataBuffer#TYPE_BYTE};</li> + * <li>{@link DataBuffer#TYPE_USHORT};</li> + * <li>{@link DataBuffer#TYPE_INT};</li> + * </ul> + * + * @param dataType the data type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param numberOfBits the number of bits per pixel (must be a power of 2). + * @param scanlineStride the number of data elements from a pixel on one + * row to the corresponding pixel in the next row. + * @param dataBitOffset the offset to the first data bit. + */ + public MultiPixelPackedSampleModel(int dataType, int w, int h, + int numberOfBits, int scanlineStride, + int dataBitOffset) + { + super(dataType, w, h, 1); + + switch (dataType) + { + case DataBuffer.TYPE_BYTE: + elemBits = 8; + break; + case DataBuffer.TYPE_USHORT: + elemBits = 16; + break; + case DataBuffer.TYPE_INT: + elemBits = 32; + break; + default: + throw new IllegalArgumentException("MultiPixelPackedSampleModel" + + " unsupported dataType"); + } + + this.dataBitOffset = dataBitOffset; + + this.numberOfBits = numberOfBits; + if (numberOfBits > elemBits) + throw new RasterFormatException("MultiPixelPackedSampleModel pixel size" + + " larger than dataType"); + switch (numberOfBits) + { + case 1: case 2: case 4: case 8: case 16: case 32: break; + default: + throw new RasterFormatException("MultiPixelPackedSampleModel pixel" + + " size not 2^n bits"); + } + numElems = elemBits / numberOfBits; + + // Compute scan line large enough for w pixels. + if (scanlineStride == 0) + scanlineStride = ((dataBitOffset + w * numberOfBits) - 1) / elemBits + 1; + this.scanlineStride = scanlineStride; + + + sampleSize = new int[1]; + sampleSize[0] = numberOfBits; + + bitMasks = new int[numElems]; + bitOffsets = new int[numElems]; + for (int i=0; i < numElems; i++) + { + bitOffsets[numElems - i- 1] = numberOfBits * i; + bitMasks[numElems - i - 1] = ((1 << numberOfBits) - 1) << + bitOffsets[numElems - i - 1]; + } + } + + /** + * Creates a new <code>MultiPixelPackedSample</code> model with the same + * data type and bits per pixel as this model, but with the specified + * dimensions. + * + * @param w the width (in pixels). + * @param h the height (in pixels). + * + * @return The new sample model. + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + /* FIXME: We can avoid recalculation of bit offsets and sample + sizes here by passing these from the current instance to a + special private constructor. */ + return new MultiPixelPackedSampleModel(dataType, w, h, numberOfBits); + } + + /** + * Creates a DataBuffer for holding pixel data in the format and + * layout described by this SampleModel. The returned buffer will + * consist of one single bank. + * + * @return A new data buffer. + */ + public DataBuffer createDataBuffer() + { + int size = scanlineStride * height; + if (dataBitOffset > 0) + size += (dataBitOffset - 1) / elemBits + 1; + return Buffers.createBuffer(getDataType(), size); + } + + /** + * Returns the number of data elements required to transfer a pixel in the + * get/setDataElements() methods. + * + * @return <code>1</code>. + */ + public int getNumDataElements() + { + return 1; + } + + /** + * Returns an array containing the size (in bits) of the samples in each + * band. The <code>MultiPixelPackedSampleModel</code> class supports only + * one band, so this method returns an array with length <code>1</code>. + * + * @return An array containing the size (in bits) of the samples in band zero. + * + * @see #getSampleSize(int) + */ + public int[] getSampleSize() + { + return (int[]) sampleSize.clone(); + } + + /** + * Returns the size of the samples in the specified band. Note that the + * <code>MultiPixelPackedSampleModel</code> supports only one band -- this + * method ignored the <code>band</code> argument, and always returns the size + * of band zero. + * + * @param band the band (this parameter is ignored). + * + * @return The size of the samples in band zero. + * + * @see #getSampleSize() + */ + public int getSampleSize(int band) + { + return sampleSize[0]; + } + + /** + * Returns the index in the data buffer that stores the pixel at (x, y). + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * + * @return The index in the data buffer that stores the pixel at (x, y). + * + * @see #getBitOffset(int) + */ + public int getOffset(int x, int y) + { + return scanlineStride * y + ((dataBitOffset + x * numberOfBits) / elemBits); + } + + /** + * The bit offset (within an element in the data buffer) of the pixels with + * the specified x-coordinate. + * + * @param x the x-coordinate. + * + * @return The bit offset. + */ + public int getBitOffset(int x) + { + return (dataBitOffset + x * numberOfBits) % elemBits; + } + + /** + * Returns the offset to the first data bit. + * + * @return The offset to the first data bit. + */ + public int getDataBitOffset() + { + return dataBitOffset; + } + + /** + * Returns the number of data elements from a pixel in one row to the + * corresponding pixel in the next row. + * + * @return The scanline stride. + */ + public int getScanlineStride() + { + return scanlineStride; + } + + /** + * Returns the number of bits per pixel. + * + * @return The number of bits per pixel. + */ + public int getPixelBitStride() + { + return numberOfBits; + } + + /** + * Returns the transfer type, which is one of the following (depending on + * the number of bits per sample for this model): + * <ul> + * <li>{@link DataBuffer#TYPE_BYTE};</li> + * <li>{@link DataBuffer#TYPE_USHORT};</li> + * <li>{@link DataBuffer#TYPE_INT};</li> + * </ul> + * + * @return The transfer type. + */ + public int getTransferType() + { + if (numberOfBits <= DataBuffer.getDataTypeSize(DataBuffer.TYPE_BYTE)) + return DataBuffer.TYPE_BYTE; + else if (numberOfBits <= DataBuffer.getDataTypeSize(DataBuffer.TYPE_USHORT)) + return DataBuffer.TYPE_USHORT; + return DataBuffer.TYPE_INT; + } + + /** + * Normally this method returns a sample model for accessing a subset of + * bands of image data, but since <code>MultiPixelPackedSampleModel</code> + * only supports a single band, this overridden implementation just returns + * a new instance of <code>MultiPixelPackedSampleModel</code>, with the same + * attributes as this instance. + * + * @param bands the bands to include in the subset (this is ignored, except + * that if it is non-<code>null</code> a check is made to ensure that the + * array length is equal to <code>1</code>). + * + * @throws RasterFormatException if <code>bands</code> is not + * <code>null</code> and <code>bands.length != 1</code>. + */ + public SampleModel createSubsetSampleModel(int[] bands) + { + if (bands != null && bands.length != 1) + throw new RasterFormatException("MultiPixelPackedSampleModel only" + + " supports one band"); + return new MultiPixelPackedSampleModel(dataType, width, height, + numberOfBits, scanlineStride, dataBitOffset); + } + + /** + * Extract one pixel and return in an array of transfer type. + * + * Extracts the pixel at x, y from data and stores into the 0th index of the + * array obj, since there is only one band. If obj is null, a new array of + * getTransferType() is created. + * + * @param x The x-coordinate of the pixel rectangle to store in + * <code>obj</code>. + * @param y The y-coordinate of the pixel rectangle to store in + * <code>obj</code>. + * @param obj The primitive array to store the pixels into or null to force + * creation. + * @param data The DataBuffer that is the source of the pixel data. + * @return The primitive array containing the pixel data. + * @see java.awt.image.SampleModel#getDataElements(int, int, Object, + * DataBuffer) + */ + public Object getDataElements(int x, int y, Object obj, DataBuffer data) + { + int pixel = getSample(x, y, 0, data); + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + if (obj == null) + obj = new byte[1]; + ((byte[]) obj)[0] = (byte) pixel; + return obj; + case DataBuffer.TYPE_USHORT: + if (obj == null) + obj = new short[1]; + ((short[]) obj)[0] = (short) pixel; + return obj; + case DataBuffer.TYPE_INT: + if (obj == null) + obj = new int[1]; + ((int[]) obj)[0] = pixel; + return obj; + default: + // Seems like the only sensible thing to do. + throw new ClassCastException(); + } + } + + /** + * Returns an array (of length 1) containing the sample for the pixel at + * (x, y) in the specified data buffer. If <code>iArray</code> is not + * <code>null</code>, it will be populated with the sample value and + * returned as the result of this function (this avoids allocating a new + * array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return An array containing the pixel sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) + { + if (iArray == null) + iArray = new int[1]; + iArray[0] = getSample(x, y, 0, data); + return iArray; + } + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int getSample(int x, int y, int b, DataBuffer data) + { + int pos = + ((dataBitOffset + x * numberOfBits) % elemBits) / numberOfBits; + int offset = getOffset(x, y); + int samples = data.getElem(offset); + return (samples & bitMasks[pos]) >>> bitOffsets[pos]; + } + + /** + * Set the pixel at x, y to the value in the first element of the primitive + * array obj. + * + * @param x The x-coordinate of the data elements in <code>obj</code>. + * @param y The y-coordinate of the data elements in <code>obj</code>. + * @param obj The primitive array containing the data elements to set. + * @param data The DataBuffer to store the data elements into. + */ + public void setDataElements(int x, int y, Object obj, DataBuffer data) + { + int transferType = getTransferType(); + try + { + switch (transferType) + { + case DataBuffer.TYPE_BYTE: + { + byte[] in = (byte[]) obj; + setSample(x, y, 0, in[0] & 0xFF, data); + return; + } + case DataBuffer.TYPE_USHORT: + { + short[] in = (short[]) obj; + setSample(x, y, 0, in[0] & 0xFFFF, data); + return; + } + case DataBuffer.TYPE_INT: + { + int[] in = (int[]) obj; + setSample(x, y, 0, in[0], data); + return; + } + default: + throw new ClassCastException("Unsupported data type"); + } + } + catch (ArrayIndexOutOfBoundsException aioobe) + { + String msg = "While writing data elements" + + ", x=" + x + ", y=" + y + + ", width=" + width + ", height=" + height + + ", scanlineStride=" + scanlineStride + + ", offset=" + getOffset(x, y) + + ", data.getSize()=" + data.getSize() + + ", data.getOffset()=" + data.getOffset() + + ": " + aioobe; + throw new ArrayIndexOutOfBoundsException(msg); + } + } + + /** + * Sets the sample value for the pixel at (x, y) in the specified data + * buffer to the specified value. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample value (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + * + * @see #setSample(int, int, int, int, DataBuffer) + */ + public void setPixel(int x, int y, int[] iArray, DataBuffer data) + { + setSample(x, y, 0, iArray[0], data); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, int s, DataBuffer data) + { + int bitpos = + ((dataBitOffset + x * numberOfBits) % elemBits) / numberOfBits; + int offset = getOffset(x, y); + + s = s << bitOffsets[bitpos]; + s = s & bitMasks[bitpos]; + + int sample = data.getElem(offset); + sample |= s; + data.setElem(offset, sample); + } + + /** + * Tests this sample model for equality with an arbitrary object. This + * method returns <code>true</code> if and only if: + * <ul> + * <li><code>obj</code> is not <code>null</code>; + * <li><code>obj</code> is an instance of + * <code>MultiPixelPackedSampleModel</code>; + * <li>both models have the same: + * <ul> + * <li><code>dataType</code>; + * <li><code>width</code>; + * <li><code>height</code>; + * <li><code>numberOfBits</code>; + * <li><code>scanlineStride</code>; + * <li><code>dataBitOffsets</code>. + * </ul> + * </li> + * </ul> + * + * @param obj the object (<code>null</code> permitted) + * + * @return <code>true</code> if this model is equal to <code>obj</code>, and + * <code>false</code> otherwise. + */ + public boolean equals(Object obj) + { + if (this == obj) + return true; + if (! (obj instanceof MultiPixelPackedSampleModel)) + return false; + MultiPixelPackedSampleModel that = (MultiPixelPackedSampleModel) obj; + if (this.dataType != that.dataType) + return false; + if (this.width != that.width) + return false; + if (this.height != that.height) + return false; + if (this.numberOfBits != that.numberOfBits) + return false; + if (this.scanlineStride != that.scanlineStride) + return false; + if (this.dataBitOffset != that.dataBitOffset) + return false; + return true; + } + + /** + * Returns a hash code for this <code>MultiPixelPackedSampleModel</code>. + * + * @return A hash code. + */ + public int hashCode() + { + // this hash code won't match Sun's, but that shouldn't matter... + int result = 193; + result = 37 * result + dataType; + result = 37 * result + width; + result = 37 * result + height; + result = 37 * result + numberOfBits; + result = 37 * result + scanlineStride; + result = 37 * result + dataBitOffset; + return result; + } + + /** + * Creates a String with some information about this SampleModel. + * @return A String describing this SampleModel. + * @see java.lang.Object#toString() + */ + public String toString() + { + CPStringBuilder result = new CPStringBuilder(); + result.append(getClass().getName()); + result.append("["); + result.append("scanlineStride=").append(scanlineStride); + for(int i=0; i < bitMasks.length; i+=1) + { + result.append(", mask[").append(i).append("]=0x").append(Integer.toHexString(bitMasks[i])); + } + + result.append("]"); + return result.toString(); + } +} diff --git a/libjava/classpath/java/awt/image/PackedColorModel.java b/libjava/classpath/java/awt/image/PackedColorModel.java new file mode 100644 index 000000000..a89d73b8c --- /dev/null +++ b/libjava/classpath/java/awt/image/PackedColorModel.java @@ -0,0 +1,188 @@ +/* Copyright (C) 2000, 2002, 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.awt.BitMaskExtent; + +import java.awt.Point; +import java.awt.color.ColorSpace; + +/** + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public abstract class PackedColorModel extends ColorModel +{ + private int masks[]; + + /* Package accessibility, the DirectColorModel needs this array */ + int shifts[]; + + public PackedColorModel(ColorSpace cspace, int pixelBits, + int[] colorMaskArray, int alphaMask, + boolean isAlphaPremultiplied, + int transparency, + int transferType) + { + super(pixelBits, calcBitsPerComponent(colorMaskArray, alphaMask), + cspace, (alphaMask != 0), isAlphaPremultiplied, transparency, + transferType); + initMasks(colorMaskArray, alphaMask); + if ((pixelBits<1) || (pixelBits>32)) { + throw new IllegalArgumentException("pixels per bits must be " + + "in the range [1, 32]"); + } + } + + private static int[] calcBitsPerComponent(int[] colorMaskArray, + int alphaMask) + { + int numComponents = colorMaskArray.length; + if (alphaMask != 0) numComponents++; + + int[] bitsPerComponent = new int[numComponents]; + + BitMaskExtent extent = new BitMaskExtent(); + for (int b=0; b<colorMaskArray.length; b++) + { + extent.setMask(colorMaskArray[b]); + bitsPerComponent[b] = extent.bitWidth; + } + if (alphaMask != 0) + { + extent.setMask(alphaMask); + bitsPerComponent[numComponents-1] = extent.bitWidth; + } + return bitsPerComponent; + } + + /** Initializes the masks. */ + private void initMasks(int[] colorMaskArray, int alphaMask) + { + int numComponents = colorMaskArray.length; + if (alphaMask == 0) + { + masks = colorMaskArray; + } + else + { + masks = new int[numComponents+1]; + System.arraycopy(colorMaskArray, 0, + masks, 0, + numComponents); + masks[numComponents++] = alphaMask; + } + + shifts = new int[numComponents]; + + // Bit field handling have been moved to a utility class + BitMaskExtent extent = new BitMaskExtent(); + for (int b=0; b<numComponents; b++) + { + extent.setMask(masks[b]); + shifts[b] = extent.leastSignificantBit; + } + } + + public PackedColorModel(ColorSpace cspace, int pixelBits, + int rmask, int gmask, int bmask, + int amask, boolean isAlphaPremultiplied, + int transparency, + int transferType) + { + this(cspace, pixelBits, makeColorMaskArray(rmask, gmask, bmask), + amask, isAlphaPremultiplied, transparency, transferType); + } + + /* TODO: If there is a alpha mask, it is inefficient to create a + color mask array that will be discarded when the alpha mask is + appended. We should probably create a private constructor that + takes a complete array of masks (color+alpha) as an + argument. */ + + private static int[] makeColorMaskArray(int rmask, int gmask, int bmask) + { + int[] colorMaskArray = { rmask, gmask, bmask }; + return colorMaskArray; + } + + public final int getMask(int index) + { + return masks[index]; + } + + public final int[] getMasks() + { + return masks; + } + + public SampleModel createCompatibleSampleModel(int w, int h) + { + return new SinglePixelPackedSampleModel(transferType, w, h, masks); + } + + public boolean isCompatibleSampleModel(SampleModel sm) + { + if (!super.isCompatibleSampleModel(sm)) return false; + if (!(sm instanceof SinglePixelPackedSampleModel)) return false; + + SinglePixelPackedSampleModel sppsm = + (SinglePixelPackedSampleModel) sm; + return java.util.Arrays.equals(sppsm.getBitMasks(), masks); + } + + public WritableRaster getAlphaRaster(WritableRaster raster) { + if (!hasAlpha()) return null; + + SampleModel sm = raster.getSampleModel(); + int[] alphaBand = { sm.getNumBands() - 1 }; + SampleModel alphaModel = sm.createSubsetSampleModel(alphaBand); + DataBuffer buffer = raster.getDataBuffer(); + Point origin = new Point(0, 0); + return Raster.createWritableRaster(alphaModel, buffer, origin); + } + + public boolean equals(Object obj) + { + if (!super.equals(obj)) return false; + if (!(obj instanceof PackedColorModel)) return false; + + PackedColorModel other = (PackedColorModel) obj; + + return java.util.Arrays.equals(masks, other.masks); + } +} diff --git a/libjava/classpath/java/awt/image/PixelGrabber.java b/libjava/classpath/java/awt/image/PixelGrabber.java new file mode 100644 index 000000000..b83fab571 --- /dev/null +++ b/libjava/classpath/java/awt/image/PixelGrabber.java @@ -0,0 +1,631 @@ +/* PixelGrabber.java -- retrieve a subset of an image's data + Copyright (C) 1999, 2003, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Image; +import java.util.Hashtable; + +/** + * PixelGrabber is an ImageConsumer that extracts a rectangular region + * of pixels from an Image. + */ +public class PixelGrabber implements ImageConsumer +{ + int x, y, offset; + int width = -1; + int height = -1; + int scansize = -1; + boolean forceRGB = true; + + ColorModel model = ColorModel.getRGBdefault(); + int hints; + Hashtable<?,?> props; + + int int_pixel_buffer[]; + boolean ints_delivered = false; + byte byte_pixel_buffer[]; + boolean bytes_delivered = false; + + ImageProducer ip; + int observerStatus; + int consumerStatus; + + private Thread grabberThread; + boolean grabbing = false; + + /** + * Construct a PixelGrabber that will retrieve RGB data from a given + * Image. + * + * The RGB data will be retrieved from a rectangular region + * <code>(x, y, w, h)</code> within the image. The data will be + * stored in the provided <code>pix</code> array, which must have + * been initialized to a size of at least <code>w * h</code>. The + * data for a pixel (m, n) in the grab rectangle will be stored at + * <code>pix[(n - y) * scansize + (m - x) + off]</code>. + * + * @param img the Image from which to grab pixels + * @param x the x coordinate, relative to <code>img</code>'s + * top-left corner, of the grab rectangle's top-left pixel + * @param y the y coordinate, relative to <code>img</code>'s + * top-left corner, of the grab rectangle's top-left pixel + * @param w the width of the grab rectangle, in pixels + * @param h the height of the grab rectangle, in pixels + * @param pix the array in which to store grabbed RGB pixel data + * @param off the offset into the <code>pix</code> array at which to + * start storing RGB data + * @param scansize a set of <code>scansize</code> consecutive + * elements in the <code>pix</code> array represents one row of + * pixels in the grab rectangle + */ + public PixelGrabber(Image img, int x, int y, int w, int h, + int pix[], int off, int scansize) + { + this (img.getSource(), x, y, w, h, pix, off, scansize); + } + + /** + * Construct a PixelGrabber that will retrieve RGB data from a given + * ImageProducer. + * + * The RGB data will be retrieved from a rectangular region + * <code>(x, y, w, h)</code> within the image produced by + * <code>ip</code>. The data will be stored in the provided + * <code>pix</code> array, which must have been initialized to a + * size of at least <code>w * h</code>. The data for a pixel (m, n) + * in the grab rectangle will be stored at + * <code>pix[(n - y) * scansize + (m - x) + off]</code>. + * + * @param ip the ImageProducer from which to grab pixels. This can + * be null. + * @param x the x coordinate of the grab rectangle's top-left pixel, + * specified relative to the top-left corner of the image produced + * by <code>ip</code> + * @param y the y coordinate of the grab rectangle's top-left pixel, + * specified relative to the top-left corner of the image produced + * by <code>ip</code> + * @param w the width of the grab rectangle, in pixels + * @param h the height of the grab rectangle, in pixels + * @param pix the array in which to store grabbed RGB pixel data + * @param off the offset into the <code>pix</code> array at which to + * start storing RGB data + * @param scansize a set of <code>scansize</code> consecutive + * elements in the <code>pix</code> array represents one row of + * pixels in the grab rectangle + */ + public PixelGrabber(ImageProducer ip, int x, int y, int w, int h, + int pix[], int off, int scansize) + { + this.ip = ip; + this.x = x; + this.y = y; + this.width = w; + this.height = h; + this.offset = off; + this.scansize = scansize; + + int_pixel_buffer = pix; + // Initialize the byte array in case ip sends us byte-formatted + // pixel data. + byte_pixel_buffer = new byte[pix.length * 4]; + } + + /** + * Construct a PixelGrabber that will retrieve data from a given + * Image. + * + * The RGB data will be retrieved from a rectangular region + * <code>(x, y, w, h)</code> within the image. The data will be + * stored in an internal array which can be accessed by calling + * <code>getPixels</code>. The data for a pixel (m, n) in the grab + * rectangle will be stored in the returned array at index + * <code>(n - y) * scansize + (m - x) + off</code>. + * If forceRGB is false, then the returned data will be not be + * converted to RGB from its format in <code>img</code>. + * + * If <code>w</code> is negative, the width of the grab region will + * be from x to the right edge of the image. Likewise, if + * <code>h</code> is negative, the height of the grab region will be + * from y to the bottom edge of the image. + * + * @param img the Image from which to grab pixels + * @param x the x coordinate, relative to <code>img</code>'s + * top-left corner, of the grab rectangle's top-left pixel + * @param y the y coordinate, relative to <code>img</code>'s + * top-left corner, of the grab rectangle's top-left pixel + * @param w the width of the grab rectangle, in pixels + * @param h the height of the grab rectangle, in pixels + * @param forceRGB true to force conversion of the rectangular + * region's pixel data to RGB + */ + public PixelGrabber(Image img, + int x, int y, + int w, int h, + boolean forceRGB) + { + this.ip = img.getSource(); + + if (this.ip == null) + throw new NullPointerException("The ImageProducer must not be null."); + + this.x = x; + this.y = y; + width = w; + height = h; + // If width or height is negative, postpone pixel buffer + // initialization until setDimensions is called back by ip. + if (width >= 0 && height >= 0) + { + int_pixel_buffer = new int[width * height]; + byte_pixel_buffer = new byte[width * height]; + } + this.forceRGB = forceRGB; + } + + /** + * Start grabbing pixels. + * + * Spawns an image production thread that calls back to this + * PixelGrabber's ImageConsumer methods. + */ + public synchronized void startGrabbing() + { + // Make sure we're not already grabbing. + if (grabbing == false) + { + grabbing = true; + grabberThread = new Thread () + { + public void run () + { + try + { + ip.startProduction (PixelGrabber.this); + } + catch (Exception ex) + { + imageComplete(ImageConsumer.IMAGEABORTED); + } + } + }; + grabberThread.start (); + } + } + + /** + * Abort pixel grabbing. + */ + public synchronized void abortGrabbing() + { + if (grabbing) + { + // Interrupt the grabbing thread. + Thread moribund = grabberThread; + grabberThread = null; + moribund.interrupt(); + + imageComplete (ImageConsumer.IMAGEABORTED); + } + } + + /** + * Have our Image or ImageProducer start sending us pixels via our + * ImageConsumer methods and wait for all pixels in the grab + * rectangle to be delivered. + * + * @return true if successful, false on abort or error + * + * @throws InterruptedException if interrupted by another thread. + */ + public synchronized boolean grabPixels() throws InterruptedException + { + return grabPixels(0); + } + + /** + * grabPixels's behavior depends on the value of <code>ms</code>. + * + * If ms < 0, return true if all pixels from the source image have + * been delivered, false otherwise. Do not wait. + * + * If ms >= 0 then we request that our Image or ImageProducer start + * delivering pixels to us via our ImageConsumer methods. + * + * If ms > 0, wait at most <code>ms</code> milliseconds for + * delivery of all pixels within the grab rectangle. + * + * If ms == 0, wait until all pixels have been delivered. + * + * @return true if all pixels from the source image have been + * delivered, false otherwise + * + * @throws InterruptedException if this thread is interrupted while + * we are waiting for pixels to be delivered + */ + public synchronized boolean grabPixels(long ms) throws InterruptedException + { + if (ms < 0) + return ((observerStatus & (ImageObserver.FRAMEBITS + | ImageObserver.ALLBITS)) != 0); + + // Spawn a new ImageProducer thread to send us the image data via + // our ImageConsumer methods. + startGrabbing(); + + if (ms > 0) + { + long stop_time = System.currentTimeMillis() + ms; + long time_remaining; + while (grabbing) + { + time_remaining = stop_time - System.currentTimeMillis(); + if (time_remaining <= 0) + break; + wait (time_remaining); + } + abortGrabbing (); + } + else + wait (); + + // If consumerStatus is non-zero then the image is done loading or + // an error has occurred. + if (consumerStatus != 0) + return setObserverStatus (); + + return ((observerStatus & (ImageObserver.FRAMEBITS + | ImageObserver.ALLBITS)) != 0); + } + + // Set observer status flags based on the current consumer status + // flags. Return true if the consumer flags indicate that the + // image was loaded successfully, or false otherwise. + private synchronized boolean setObserverStatus () + { + boolean retval = false; + + if ((consumerStatus & IMAGEERROR) != 0) + observerStatus |= ImageObserver.ERROR; + + if ((consumerStatus & IMAGEABORTED) != 0) + observerStatus |= ImageObserver.ABORT; + + if ((consumerStatus & STATICIMAGEDONE) != 0) + { + observerStatus |= ImageObserver.ALLBITS; + retval = true; + } + + if ((consumerStatus & SINGLEFRAMEDONE) != 0) + { + observerStatus |= ImageObserver.FRAMEBITS; + retval = true; + } + + return retval; + } + + /** + * @return the status of the pixel grabbing thread, represented by a + * bitwise OR of ImageObserver flags + */ + public synchronized int getStatus() + { + return observerStatus; + } + + /** + * @return the width of the grab rectangle in pixels, or a negative + * number if the ImageProducer has not yet called our setDimensions + * method + */ + public synchronized int getWidth() + { + return width; + } + + /** + * @return the height of the grab rectangle in pixels, or a negative + * number if the ImageProducer has not yet called our setDimensions + * method + */ + public synchronized int getHeight() + { + return height; + } + + /** + * @return a byte array of pixel data if ImageProducer delivered + * pixel data using the byte[] variant of setPixels, or an int array + * otherwise + */ + public synchronized Object getPixels() + { + if (ints_delivered) + return int_pixel_buffer; + else if (bytes_delivered) + return byte_pixel_buffer; + else + return null; + } + + /** + * @return the ColorModel currently being used for the majority of + * pixel data conversions + */ + public synchronized ColorModel getColorModel() + { + return model; + } + + /** + * Our <code>ImageProducer</code> calls this method to indicate the + * size of the image being produced. + * + * setDimensions is an ImageConsumer method. None of PixelGrabber's + * ImageConsumer methods should be called by code that instantiates + * a PixelGrabber. They are only made public so they can be called + * by the PixelGrabber's ImageProducer. + * + * @param width the width of the image + * @param height the height of the image + */ + public synchronized void setDimensions(int width, int height) + { + // Our width wasn't set when we were constructed. Set our width + // so that the grab region includes all pixels from x to the right + // edge of the source image. + if (this.width < 0) + this.width = width - x; + + // Our height wasn't set when we were constructed. Set our height + // so that the grab region includes all pixels from y to the + // bottom edge of the source image. + if (this.height < 0) + this.height = height - y; + + if (scansize < 0) + scansize = this.width; + + if (int_pixel_buffer == null) + int_pixel_buffer = new int[this.width * this.height]; + + if (byte_pixel_buffer == null) + byte_pixel_buffer = new byte[this.width * this.height]; + } + + /** + * Our <code>ImageProducer</code> may call this method to send us a + * list of its image's properties. + * + * setProperties is an ImageConsumer method. None of PixelGrabber's + * ImageConsumer methods should be called by code that instantiates + * a PixelGrabber. They are only made public so they can be called + * by the PixelGrabber's ImageProducer. + * + * @param props a list of properties associated with the image being + * produced + */ + public synchronized void setProperties(Hashtable<?,?> props) + { + this.props = props; + } + + /** + * Our ImageProducer will call <code>setColorModel</code> to + * indicate the model used by the majority of calls to + * <code>setPixels</code>. Each call to <code>setPixels</code> + * could however indicate a different <code>ColorModel</code>. + * + * setColorModel is an ImageConsumer method. None of PixelGrabber's + * ImageConsumer methods should be called by code that instantiates + * a PixelGrabber. They are only made public so they can be called + * by the PixelGrabber's ImageProducer. + * + * @param model the color model to be used most often by setPixels + * + * @see ColorModel + */ + public synchronized void setColorModel(ColorModel model) + { + this.model = model; + } + + /** + * Our <code>ImageProducer</code> may call this method with a + * bit mask of hints from any of <code>RANDOMPIXELORDER</code>, + * <code>TOPDOWNLEFTRIGHT</code>, <code>COMPLETESCANLINES</code>, + * <code>SINGLEPASS</code>, <code>SINGLEFRAME</code>. + * + * setHints is an ImageConsumer method. None of PixelGrabber's + * ImageConsumer methods should be called by code that instantiates + * a PixelGrabber. They are only made public so they can be called + * by the PixelGrabber's ImageProducer. + * + * @param flags a bit mask of hints + */ + public synchronized void setHints(int flags) + { + hints = flags; + } + + /** + * Our ImageProducer calls setPixels to deliver a subset of its + * pixels. + * + * Each element of the pixels array represents one pixel. The + * pixel data is formatted according to the color model model. + * The x and y parameters are the coordinates of the rectangular + * region of pixels being delivered to this ImageConsumer, + * specified relative to the top left corner of the image being + * produced. Likewise, w and h are the pixel region's dimensions. + * + * @param x x coordinate of pixel block + * @param y y coordinate of pixel block + * @param w width of pixel block + * @param h height of pixel block + * @param model color model used to interpret pixel data + * @param pixels pixel block data + * @param offset offset into pixels array + * @param scansize width of one row in the pixel block + */ + public synchronized void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, + int offset, int scansize) + { + ColorModel currentModel; + if (model != null) + currentModel = model; + else + currentModel = this.model; + + for(int yp = y; yp < (y + h); yp++) + { + for(int xp = x; xp < (x + w); xp++) + { + // Check if the coordinates (xp, yp) are within the + // pixel block that we are grabbing. + if(xp >= this.x + && yp >= this.y + && xp < (this.x + this.width) + && yp < (this.y + this.height)) + { + int i = (yp - this.y) * this.scansize + (xp - this.x) + this.offset; + int p = (yp - y) * scansize + (xp - x) + offset; + if (forceRGB) + { + ints_delivered = true; + + int_pixel_buffer[i] = currentModel.getRGB (pixels[p] & 0xFF); + } + else + { + bytes_delivered = true; + + byte_pixel_buffer[i] = pixels[p]; + } + } + } + } + } + + /** + * Our ImageProducer calls setPixels to deliver a subset of its + * pixels. + * + * Each element of the pixels array represents one pixel. The + * pixel data is formatted according to the color model model. + * The x and y parameters are the coordinates of the rectangular + * region of pixels being delivered to this ImageConsumer, + * specified relative to the top left corner of the image being + * produced. Likewise, w and h are the pixel region's dimensions. + * + * @param x x coordinate of pixel block + * @param y y coordinate of pixel block + * @param w width of pixel block + * @param h height of pixel block + * @param model color model used to interpret pixel data + * @param pixels pixel block data + * @param offset offset into pixels array + * @param scansize width of one row in the pixel block + */ + public synchronized void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, + int offset, int scansize) + { + ColorModel currentModel; + if (model != null) + currentModel = model; + else + currentModel = this.model; + + ints_delivered = true; + + for(int yp = y; yp < (y + h); yp++) + { + for(int xp = x; xp < (x + w); xp++) + { + // Check if the coordinates (xp, yp) are within the + // pixel block that we are grabbing. + if(xp >= this.x + && yp >= this.y + && xp < (this.x + this.width) + && yp < (this.y + this.height)) + { + int i = (yp - this.y) * this.scansize + (xp - this.x) + this.offset; + int p = (yp - y) * scansize + (xp - x) + offset; + if (forceRGB) + int_pixel_buffer[i] = currentModel.getRGB (pixels[p]); + else + int_pixel_buffer[i] = pixels[p]; + } + } + } + } + + /** + * Our <code>ImageProducer</code> calls this method to inform us + * that a single frame or the entire image is complete. The method + * is also used to inform us of an error in loading or producing the + * image. + * + * @param status the status of image production, represented by a + * bitwise OR of ImageConsumer flags + */ + public synchronized void imageComplete(int status) + { + consumerStatus = status; + setObserverStatus (); + grabbing = false; + if (ip != null) + ip.removeConsumer (this); + + notifyAll (); + } + + /** + * @return the return value of getStatus + * + * @specnote The newer getStatus should be used in place of status. + */ + public synchronized int status() + { + return getStatus(); + } +} diff --git a/libjava/classpath/java/awt/image/PixelInterleavedSampleModel.java b/libjava/classpath/java/awt/image/PixelInterleavedSampleModel.java new file mode 100644 index 000000000..13134b413 --- /dev/null +++ b/libjava/classpath/java/awt/image/PixelInterleavedSampleModel.java @@ -0,0 +1,123 @@ +/* PixelInterleavedSampleModel.java + Copyright (C) 2004, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + + +/** + * A <code>SampleModel</code> that uses exactly one element of the + * raster’s {@link DataBuffer} per pixel, holds all bands in a + * single bank, and stores band data in pixel-interleaved manner. + * + * @since 1.2 + * + * @author Sascha Brawer (brawer@dandelis.ch) + */ +public class PixelInterleavedSampleModel + extends ComponentSampleModel +{ + public PixelInterleavedSampleModel(int dataType, int width, int height, + int pixelStride, int scanlineStride, + int[] bandOffsets) + { + super(dataType, width, height, pixelStride, scanlineStride, + bandOffsets); + } + + + /** + * Creates a new <code>SampleModel</code> that is like this one, but + * uses the specified width and height. + * + * @param width the number of pixels in the horizontal direction. + * + * @param height the number of pixels in the vertical direction. + */ + public SampleModel createCompatibleSampleModel(int width, int height) + { + // Find minimum band offset. + int minBandoff = bandOffsets[0]; + int numBands = bandOffsets.length; + for (int i = 1; i < numBands; i++) + { + if (bandOffsets[i] < minBandoff) + { + minBandoff = bandOffsets[i]; + } + } + // Adjust band offsets so that minimum offset is at 0. + int[] bandOff; + if (minBandoff > 0) + { + bandOff = new int[numBands]; + for (int i = 0; i < numBands; i++) + { + bandOff[i] = bandOffsets[i] - minBandoff; + } + } + else + { + bandOff = bandOffsets; + } + // Adjust scanline stride for new width. + return new PixelInterleavedSampleModel(dataType, width, height, + pixelStride, pixelStride * width, + bandOff); + } + + + /** + * Creates a new <code>SampleModel</code> that is like this one, but + * uses only a subset of its bands. + * + * @param bands an array whose elements indicate which bands shall + * be part of the subset. For example, <code>[0, 2, 3]</code> would + * create a SampleModel containing bands #0, #2 and #3. + */ + public SampleModel createSubsetSampleModel(int[] bands) + { + int[] subOffsets; + + subOffsets = new int[bands.length]; + for (int i = 0; i < bands.length; i++) + subOffsets[i] = bandOffsets[bands[i]]; + + return new PixelInterleavedSampleModel(dataType, width, height, + pixelStride, scanlineStride, + subOffsets); + } +} diff --git a/libjava/classpath/java/awt/image/RGBImageFilter.java b/libjava/classpath/java/awt/image/RGBImageFilter.java new file mode 100644 index 000000000..1354c3a80 --- /dev/null +++ b/libjava/classpath/java/awt/image/RGBImageFilter.java @@ -0,0 +1,265 @@ +/* RGBImageFilter.java -- Java class for filtering Pixels by RGB values + Copyright (C) 1999, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * A filter designed to filter images in the default RGBColorModel regardless of + * the ImageProducer's ColorModel. + * + * @author Mark Benvenuto (mcb54@columbia.edu) + */ +public abstract class RGBImageFilter extends ImageFilter +{ + protected ColorModel origmodel; + + protected ColorModel newmodel; + + /** + * Specifies whether to apply the filter to the index entries of the + * IndexColorModel. Subclasses should set this to true if the filter + * does not depend on the pixel's coordinate. + */ + protected boolean canFilterIndexColorModel = false; + + /** + * Construct new RGBImageFilter. + */ + public RGBImageFilter() + { + } + + /** + * Sets the ColorModel used to filter with. If the specified ColorModel is + * IndexColorModel and canFilterIndexColorModel is true, we subsitute the + * ColorModel for a filtered one here and in setPixels whenever the original + * one appears. Otherwise overrides the default ColorModel of ImageProducer + * and specifies the default RGBColorModel + * + * @param model the color model to be used most often by setPixels + * + * @see ColorModel + */ + public void setColorModel(ColorModel model) + { + if ((model instanceof IndexColorModel) && canFilterIndexColorModel) + { + ColorModel newCM = filterIndexColorModel((IndexColorModel) model); + substituteColorModel(model, newCM); + consumer.setColorModel(newmodel); + } + else + { + consumer.setColorModel(ColorModel.getRGBdefault()); + } + } + + /** + * Registers a new ColorModel to subsitute for the old ColorModel when + * setPixels encounters the a pixel with the old ColorModel. The pixel + * remains unchanged except for a new ColorModel. + * + * @param oldcm the old ColorModel + * @param newcm the new ColorModel + */ + public void substituteColorModel(ColorModel oldcm, ColorModel newcm) + { + origmodel = oldcm; + newmodel = newcm; + } + + /** + * Filters an IndexColorModel through the filterRGB function. Uses + * coordinates of -1 to indicate its filtering an index and not a pixel. + * + * @param icm an IndexColorModel to filter + */ + public IndexColorModel filterIndexColorModel(IndexColorModel icm) + { + int len = icm.getMapSize(); + byte[] reds = new byte[len]; + byte[] greens = new byte[len]; + byte[] blues = new byte[len]; + byte[] alphas = new byte[len]; + + icm.getAlphas( alphas ); + icm.getReds( reds ); + icm.getGreens( greens ); + icm.getBlues( blues ); + + int transparent = icm.getTransparentPixel(); + boolean needAlpha = false; + for( int i = 0; i < len; i++ ) + { + int rgb = filterRGB(-1, -1, icm.getRGB(i)); + alphas[i] = (byte) (rgb >> 24); + if (alphas[i] != ((byte) 0xff) && i != transparent) + needAlpha = true; + reds[i] = (byte) (rgb >> 16); + greens[i] = (byte) (rgb >> 8); + blues[i] = (byte) (rgb); + } + IndexColorModel newIcm; + if (needAlpha) + newIcm = new IndexColorModel(icm.getPixelSize(), len, reds, greens, + blues, alphas); + else + newIcm = new IndexColorModel(icm.getPixelSize(), len, reds, greens, + blues, transparent); + return newIcm; + } + + /** + * This functions filters a set of RGB pixels through filterRGB. + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the + * <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the + * <code>pixels</code> array + */ + public void filterRGBPixels(int x, int y, int w, int h, int[] pixels, + int offset, int scansize) + { + int index = offset; + for (int yp = 0; yp < h; yp++) + { + for (int xp = 0; xp < w; xp++) + { + pixels[index] = filterRGB(xp + x, yp + y, pixels[index]); + index++; + } + index += scansize - w; + } + consumer.setPixels(x, y, w, h, ColorModel.getRGBdefault(), pixels, offset, + scansize); + } + + /** + * If the ColorModel is the same ColorModel which as already converted + * then it converts it the converted ColorModel. Otherwise it passes the + * array of pixels through filterRGBpixels. + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> + * array + * @param scansize the width to use in extracting pixels from the + * <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, ColorModel model, + byte[] pixels, int offset, int scansize) + { + if (model == origmodel) + { + consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize); + } + else + { + int[] filtered = new int[w]; + int index = offset; + for (int yp = 0; yp < h; yp++) + { + for (int xp = 0; xp < w; xp++) + { + filtered[xp] = model.getRGB((pixels[index] & 0xff)); + index++; + } + index += scansize - w; + filterRGBPixels(x, y + yp, w, 1, filtered, 0, w); + } + } + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as an <code>int</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> + * array + * @param scansize the width to use in extracting pixels from the + * <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, ColorModel model, + int[] pixels, int offset, int scansize) + { + if (model == origmodel) + { + consumer.setPixels(x, y, w, h, newmodel, pixels, offset, scansize); + } + else + { + int[] filtered = new int[w]; + int index = offset; + for (int yp = 0; yp < h; yp++) + { + for (int xp = 0; xp < w; xp++) + { + filtered[xp] = model.getRGB((pixels[index])); + index++; + } + index += scansize - w; + filterRGBPixels(x, y + yp, w, 1, filtered, 0, w); + } + } + } + + /** + * Filters a single pixel from the default ColorModel. + * + * @param x x-coordinate + * @param y y-coordinate + * @param rgb color + */ + public abstract int filterRGB(int x, int y, int rgb); +} diff --git a/libjava/classpath/java/awt/image/Raster.java b/libjava/classpath/java/awt/image/Raster.java new file mode 100644 index 000000000..6d99c3683 --- /dev/null +++ b/libjava/classpath/java/awt/image/Raster.java @@ -0,0 +1,973 @@ +/* Copyright (C) 2000, 2002, 2003, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import gnu.java.lang.CPStringBuilder; + +import java.awt.Point; +import java.awt.Rectangle; + +/** + * A rectangular collection of pixels composed from a {@link DataBuffer} which + * stores the pixel values, and a {@link SampleModel} which is used to retrieve + * the pixel values. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class Raster +{ + /** The sample model used to access the pixel values. */ + protected SampleModel sampleModel; + + /** The data buffer used to store the pixel values. */ + protected DataBuffer dataBuffer; + + /** The x-coordinate of the top left corner of the raster. */ + protected int minX; + + /** The y-coordinate of the top left corner of the raster. */ + protected int minY; + + /** The width of the raster. */ + protected int width; + + /** The height of the raster. */ + protected int height; + + protected int sampleModelTranslateX; + + protected int sampleModelTranslateY; + + /** The number of bands. */ + protected int numBands; + + protected int numDataElements; + + /** The raster's parent. */ + protected Raster parent; + + /** + * Creates a new raster. + * + * @param sampleModel the sample model. + * @param origin the origin. + */ + protected Raster(SampleModel sampleModel, Point origin) + { + this(sampleModel, sampleModel.createDataBuffer(), origin); + } + + /** + * Creates a new raster. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param origin the origin. + */ + protected Raster(SampleModel sampleModel, DataBuffer dataBuffer, + Point origin) + { + this(sampleModel, dataBuffer, new Rectangle(origin.x, origin.y, + sampleModel.getWidth(), sampleModel.getHeight()), origin, null); + } + + /** + * Creates a new raster. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param aRegion the raster's bounds. + * @param sampleModelTranslate the translation (<code>null</code> permitted). + * @param parent the raster's parent. + */ + protected Raster(SampleModel sampleModel, DataBuffer dataBuffer, + Rectangle aRegion, Point sampleModelTranslate, Raster parent) + { + this.sampleModel = sampleModel; + this.dataBuffer = dataBuffer; + this.minX = aRegion.x; + this.minY = aRegion.y; + this.width = aRegion.width; + this.height = aRegion.height; + + // If sampleModelTranslate is null, use (0,0). Methods such as + // Raster.createRaster are specified to allow for a null argument. + if (sampleModelTranslate != null) + { + this.sampleModelTranslateX = sampleModelTranslate.x; + this.sampleModelTranslateY = sampleModelTranslate.y; + } + + this.numBands = sampleModel.getNumBands(); + this.numDataElements = sampleModel.getNumDataElements(); + this.parent = parent; + } + + /** + * Creates an interleaved raster using the specified data type. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param bands the number of bands. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createInterleavedRaster(int dataType, + int w, int h, int bands, Point location) + { + int[] bandOffsets = new int[bands]; + // TODO: Maybe not generate this every time. + for (int b = 0; b < bands; b++) + bandOffsets[b] = b; + + int scanlineStride = bands * w; + return createInterleavedRaster(dataType, w, h, scanlineStride, bands, + bandOffsets, location); + } + + /** + * Creates an interleaved raster. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param scanlineStride the number of data elements from a sample on one + * row to the corresponding sample on the next row. + * @param pixelStride the number of elements from a sample in one pixel to + * the corresponding sample in the next pixel. + * @param bandOffsets the band offsets. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createInterleavedRaster(int dataType, + int w, int h, int scanlineStride, int pixelStride, int[] bandOffsets, + Point location) + { + SampleModel sm = new ComponentSampleModel(dataType, w, h, pixelStride, + scanlineStride, bandOffsets); + return createWritableRaster(sm, location); + } + + /** + * Creates a new banded raster. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param bands the number of bands. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createBandedRaster(int dataType, int w, int h, + int bands, Point location) + { + SampleModel sm = new BandedSampleModel(dataType, w, h, bands); + return createWritableRaster(sm, location); + } + + /** + * Creates a new banded raster. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param scanlineStride the number of data elements from a sample on one + * row to the corresponding sample on the next row. + * @param bankIndices the index for each bank. + * @param bandOffsets the offset for each band. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createBandedRaster(int dataType, int w, int h, + int scanlineStride, int[] bankIndices, int[] bandOffsets, Point location) + { + SampleModel sm = new BandedSampleModel(dataType, w, h, scanlineStride, + bankIndices, bandOffsets); + return createWritableRaster(sm, location); + } + + /** + * Creates a new packed raster. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param bandMasks the bit mask for each band. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createPackedRaster(int dataType, int w, int h, + int[] bandMasks, Point location) + { + SampleModel sm = new SinglePixelPackedSampleModel(dataType, w, h, + bandMasks); + return createWritableRaster(sm, location); + } + + /** + * Creates a new raster. + * + * @param dataType the data type. + * @param w the width. + * @param h the height. + * @param bands the number of bands. + * @param bitsPerBand the number of bits per band. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createPackedRaster(int dataType, + int w, int h, int bands, int bitsPerBand, Point location) + { + if (bands <= 0 || (bands * bitsPerBand > getTypeBits(dataType))) + throw new IllegalArgumentException(); + + SampleModel sm; + + if (bands == 1) + sm = new MultiPixelPackedSampleModel(dataType, w, h, bitsPerBand); + else + { + int[] bandMasks = new int[bands]; + int mask = 0x1; + for (int bits = bitsPerBand; --bits != 0;) + mask = (mask << 1) | 0x1; + for (int i = 0; i < bands; i++) + { + bandMasks[i] = mask; + mask <<= bitsPerBand; + } + + sm = new SinglePixelPackedSampleModel(dataType, w, h, bandMasks); + } + return createWritableRaster(sm, location); + } + + /** + * Creates a new interleaved raster. + * + * @param dataBuffer the data buffer. + * @param w the width. + * @param h the height. + * @param scanlineStride the number of data elements from a sample on one + * row to the corresponding sample on the next row. + * @param pixelStride the number of elements from a sample in one pixel to + * the corresponding sample in the next pixel. + * @param bandOffsets the offset for each band. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createInterleavedRaster(DataBuffer dataBuffer, + int w, int h, int scanlineStride, int pixelStride, int[] bandOffsets, + Point location) + { + SampleModel sm = new ComponentSampleModel(dataBuffer.getDataType(), + w, h, pixelStride, scanlineStride, bandOffsets); + return createWritableRaster(sm, dataBuffer, location); + } + + /** + * Creates a new banded raster. + * + * @param dataBuffer the data buffer. + * @param w the width. + * @param h the height. + * @param scanlineStride the number of data elements from a sample on one + * row to the corresponding sample on the next row. + * @param bankIndices the index for each bank. + * @param bandOffsets the band offsets. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createBandedRaster(DataBuffer dataBuffer, + int w, int h, int scanlineStride, int[] bankIndices, int[] bandOffsets, + Point location) + { + SampleModel sm = new BandedSampleModel(dataBuffer.getDataType(), + w, h, scanlineStride, bankIndices, bandOffsets); + return createWritableRaster(sm, dataBuffer, location); + } + + /** + * Creates a new packed raster. + * + * @param dataBuffer the data buffer. + * @param w the width. + * @param h the height. + * @param scanlineStride the number of data elements from a sample on one + * row to the corresponding sample on the next row. + * @param bandMasks the bit mask for each band. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createPackedRaster(DataBuffer dataBuffer, + int w, int h, int scanlineStride, int[] bandMasks, Point location) + { + SampleModel sm = new SinglePixelPackedSampleModel(dataBuffer.getDataType(), + w, h, scanlineStride, bandMasks); + return createWritableRaster(sm, dataBuffer, location); + } + + /** + * Creates a new packed raster. + * + * @param dataBuffer the data buffer. + * @param w the width. + * @param h the height. + * @param bitsPerPixel the number of bits per pixel. + * @param location + * + * @return The new raster. + */ + public static WritableRaster createPackedRaster(DataBuffer dataBuffer, + int w, int h, int bitsPerPixel, Point location) + { + SampleModel sm = new MultiPixelPackedSampleModel(dataBuffer.getDataType(), + w, h, bitsPerPixel); + return createWritableRaster(sm, dataBuffer, location); + } + + /** + * Creates a new raster. + * + * @param sm the sample model. + * @param db the data buffer. + * @param location + * + * @return The new raster. + */ + public static Raster createRaster(SampleModel sm, DataBuffer db, + Point location) + { + return new Raster(sm, db, location); + } + + /** + * Creates a new writable raster. + * + * @param sm the sample model. + * @param location + * + * @return The new writable raster. + */ + public static WritableRaster createWritableRaster(SampleModel sm, + Point location) + { + return new WritableRaster(sm, location); + } + + /** + * Creates a new writable raster. + * + * @param sm the sample model. + * @param db the data buffer. + * @param location + * + * @return The new writable raster. + */ + public static WritableRaster createWritableRaster(SampleModel sm, + DataBuffer db, Point location) + { + return new WritableRaster(sm, db, location); + } + + /** + * Returns the raster's parent. + * + * @return The raster's parent. + */ + public Raster getParent() + { + return parent; + } + + /** + * Returns the x-translation. + * + * @return The x-translation. + */ + public final int getSampleModelTranslateX() + { + return sampleModelTranslateX; + } + + /** + * Returns the y-translation. + * + * @return The y-translation. + */ + public final int getSampleModelTranslateY() + { + return sampleModelTranslateY; + } + + /** + * Creates a new writable raster that is compatible with this raster. + * + * @return A new writable raster. + */ + public WritableRaster createCompatibleWritableRaster() + { + return new WritableRaster(getSampleModel(), new Point(minX, minY)); + } + + /** + * Creates a new writable raster that is compatible with this raster. + * + * @param w the width. + * @param h the height. + * + * @return A new writable raster. + */ + public WritableRaster createCompatibleWritableRaster(int w, int h) + { + return createCompatibleWritableRaster(minX, minY, w, h); + } + + /** + * Creates a new writable raster that is compatible with this raster, with + * the specified bounds. + * + * @param rect the raster bounds. + * + * @return A new writable raster. + */ + public WritableRaster createCompatibleWritableRaster(Rectangle rect) + { + return createCompatibleWritableRaster(rect.x, rect.y, + rect.width, rect.height); + } + + /** + * Creates a new writable raster that is compatible with this raster, with + * the specified bounds. + * + * @param x the x-coordinate of the top-left corner of the raster. + * @param y the y-coordinate of the top-left corner of the raster. + * @param w the raster width. + * @param h the raster height. + * + * @return A new writable raster. + */ + public WritableRaster createCompatibleWritableRaster(int x, int y, + int w, int h) + { + SampleModel sm = getSampleModel().createCompatibleSampleModel(w, h); + return new WritableRaster(sm, sm.createDataBuffer(), new Point(x, y)); + } + + public Raster createTranslatedChild(int childMinX, int childMinY) { + int tcx = sampleModelTranslateX - minX + childMinX; + int tcy = sampleModelTranslateY - minY + childMinY; + + return new Raster(sampleModel, dataBuffer, + new Rectangle(childMinX, childMinY, width, height), + new Point(tcx, tcy), this); + } + + public Raster createChild(int parentX, int parentY, int width, + int height, int childMinX, int childMinY, + int[] bandList) + { + if (parentX < minX || parentX + width > minX + this.width + || parentY < minY || parentY + height > minY + this.height) + throw new RasterFormatException("Child raster extends beyond parent"); + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + /* + data origin + / + +------------------------- + |\. __ parent trans + | \`. + | \ `. parent origin + | \ `. / + | /\ +-------- - - + |trans\ /<\-- deltaTrans + |child +-+-\---- - - + | /|`| \__ parent [x, y] + |child | |`. \ + |origin| : `.\ + | | / `\ + | : / + + | child [x, y] + + parent_xy - parent_trans = child_xy - child_trans + + child_trans = parent_trans + child_xy - parent_xy + */ + + return new Raster(sm, dataBuffer, + new Rectangle(childMinX, childMinY, width, height), + new Point(sampleModelTranslateX + childMinX - parentX, + sampleModelTranslateY + childMinY - parentY), + this); + } + + /** + * Returns a new rectangle containing the bounds of this raster. + * + * @return A new rectangle containing the bounds of this raster. + */ + public Rectangle getBounds() + { + return new Rectangle(minX, minY, width, height); + } + + /** + * Returns the x-coordinate of the top left corner of the raster. + * + * @return The x-coordinate of the top left corner of the raster. + */ + public final int getMinX() + { + return minX; + } + + /** + * Returns the t-coordinate of the top left corner of the raster. + * + * @return The t-coordinate of the top left corner of the raster. + */ + public final int getMinY() + { + return minY; + } + + /** + * Returns the width of the raster. + * + * @return The width of the raster. + */ + public final int getWidth() + { + return width; + } + + /** + * Returns the height of the raster. + * + * @return The height of the raster. + */ + public final int getHeight() + { + return height; + } + + /** + * Returns the number of bands for this raster. + * + * @return The number of bands. + */ + public final int getNumBands() + { + return numBands; + } + + public final int getNumDataElements() + { + return numDataElements; + } + + /** + * Returns the transfer type for the raster (this is determined by the + * raster's sample model). + * + * @return The transfer type. + */ + public final int getTransferType() + { + return sampleModel.getTransferType(); + } + + /** + * Returns the data buffer that stores the pixel data for this raster. + * + * @return The data buffer. + */ + public DataBuffer getDataBuffer() + { + return dataBuffer; + } + + /** + * Returns the sample model that accesses the data buffer (to extract pixel + * data) for this raster. + * + * @return The sample model. + */ + public SampleModel getSampleModel() + { + return sampleModel; + } + + public Object getDataElements(int x, int y, Object outData) + { + return sampleModel.getDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, outData, dataBuffer); + } + + public Object getDataElements(int x, int y, int w, int h, Object outData) + { + return sampleModel.getDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, outData, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * raster. If <code>iArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public int[] getPixel(int x, int y, int[] iArray) + { + return sampleModel.getPixel(x - sampleModelTranslateX, + y - sampleModelTranslateY, iArray, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * raster. If <code>fArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public float[] getPixel(int x, int y, float[] fArray) + { + return sampleModel.getPixel(x - sampleModelTranslateX, + y - sampleModelTranslateY, fArray, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * raster. If <code>dArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public double[] getPixel(int x, int y, double[] dArray) + { + return sampleModel.getPixel(x - sampleModelTranslateX, + y - sampleModelTranslateY, dArray, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the raster. The array is ordered by pixels + * (that is, all the samples for the first pixel are grouped together, + * followed by all the samples for the second pixel, and so on). + * If <code>iArray</code> is not <code>null</code>, it will be populated + * with the sample values and returned as the result of this function (this + * avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public int[] getPixels(int x, int y, int w, int h, int[] iArray) + { + return sampleModel.getPixels(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, iArray, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the raster. The array is ordered by pixels + * (that is, all the samples for the first pixel are grouped together, + * followed by all the samples for the second pixel, and so on). + * If <code>fArray</code> is not <code>null</code>, it will be populated + * with the sample values and returned as the result of this function (this + * avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public float[] getPixels(int x, int y, int w, int h, float[] fArray) + { + return sampleModel.getPixels(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, fArray, dataBuffer); + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the raster. The array is ordered by pixels + * (that is, all the samples for the first pixel are grouped together, + * followed by all the samples for the second pixel, and so on). + * If <code>dArray</code> is not <code>null</code>, it will be populated + * with the sample values and returned as the result of this function (this + * avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The pixel sample values. + */ + public double[] getPixels(int x, int y, int w, int h, double[] dArray) + { + return sampleModel.getPixels(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, dArray, dataBuffer); + } + + /** + * Returns the sample value for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * + * @return The sample value. + */ + public int getSample(int x, int y, int b) + { + return sampleModel.getSample(x - sampleModelTranslateX, + y - sampleModelTranslateY, b, dataBuffer); + } + + /** + * Returns the sample value for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * + * @return The sample value. + * + * @see #getSample(int, int, int) + */ + public float getSampleFloat(int x, int y, int b) + { + return sampleModel.getSampleFloat(x - sampleModelTranslateX, + y - sampleModelTranslateY, b, dataBuffer); + } + + /** + * Returns the sample value for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * + * @return The sample value. + * + * @see #getSample(int, int, int) + */ + public double getSampleDouble(int x, int y, int b) + { + return sampleModel.getSampleDouble(x - sampleModelTranslateX, + y - sampleModelTranslateY, b, dataBuffer); + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the raster. If + * <code>iArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The sample values. + */ + public int[] getSamples(int x, int y, int w, int h, int b, + int[] iArray) + { + return sampleModel.getSamples(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, b, iArray, dataBuffer); + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the raster. If + * <code>fArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The sample values. + */ + public float[] getSamples(int x, int y, int w, int h, int b, float[] fArray) + { + return sampleModel.getSamples(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, b, fArray, dataBuffer); + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the raster. If + * <code>dArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * + * @return The sample values. + */ + public double[] getSamples(int x, int y, int w, int h, int b, + double[] dArray) + { + return sampleModel.getSamples(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, b, dArray, dataBuffer); + } + + /** + * Create a String representing the state of this Raster. + * + * @return A String representing the stat of this Raster. + */ + public String toString() + { + CPStringBuilder result = new CPStringBuilder(); + + result.append(getClass().getName()); + result.append("[("); + result.append(minX).append(",").append(minY).append("), "); + result.append(width).append(" x ").append(height).append(","); + result.append(sampleModel).append(","); + result.append(dataBuffer); + result.append("]"); + + return result.toString(); + } + + /** + * Returns the number of bits used to represent the specified data type. + * Valid types are: + * <ul> + * <li>{@link DataBuffer#TYPE_BYTE};</li> + * <li>{@link DataBuffer#TYPE_USHORT};</li> + * <li>{@link DataBuffer#TYPE_SHORT};</li> + * <li>{@link DataBuffer#TYPE_INT};</li> + * <li>{@link DataBuffer#TYPE_FLOAT};</li> + * <li>{@link DataBuffer#TYPE_DOUBLE};</li> + * </ul> + * This method returns 0 for invalid data types. + * + * @param dataType the data type. + * + * @return The number of bits used to represent the specified data type. + */ + private static int getTypeBits(int dataType) + { + switch (dataType) + { + case DataBuffer.TYPE_BYTE: + return 8; + case DataBuffer.TYPE_USHORT: + case DataBuffer.TYPE_SHORT: + return 16; + case DataBuffer.TYPE_INT: + case DataBuffer.TYPE_FLOAT: + return 32; + case DataBuffer.TYPE_DOUBLE: + return 64; + default: + return 0; + } + } +} diff --git a/libjava/classpath/java/awt/image/RasterFormatException.java b/libjava/classpath/java/awt/image/RasterFormatException.java new file mode 100644 index 000000000..582c2ae5a --- /dev/null +++ b/libjava/classpath/java/awt/image/RasterFormatException.java @@ -0,0 +1,65 @@ +/* RasterFormatException.java -- indicates invalid layout in Raster + Copyright (C) 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * This exception is thrown when there is invalid layout information in + * <code>Raster</code> + * + * @author Eric Blake (ebb9@email.byu.edu) + * @see Raster + * @status updated to 1.4 + */ +public class RasterFormatException extends RuntimeException +{ + /** + * Compatible with JDK 1.0+. + */ + private static final long serialVersionUID = 96598996116164315L; + + /** + * Create a new instance with a descriptive error message. + * + * @param message the descriptive error message + */ + public RasterFormatException(String message) + { + super(message); + } +} // class RasterFormatException diff --git a/libjava/classpath/java/awt/image/RasterOp.java b/libjava/classpath/java/awt/image/RasterOp.java new file mode 100644 index 000000000..2b2c0731f --- /dev/null +++ b/libjava/classpath/java/awt/image/RasterOp.java @@ -0,0 +1,104 @@ +/* RasterOp.java -- + Copyright (C) 2000, 2002, 2004, 2005, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; + +/** + * An operation that is performed on one raster (the source) producing a new + * raster (the destination). + */ +public interface RasterOp +{ + /** + * Performs an operation on the source raster, returning the result in a + * writable raster. If <code>dest</code> is <code>null</code>, a new + * <code>WritableRaster</code> will be created by calling the + * {@link #createCompatibleDestRaster(Raster)} method. If <code>dest</code> + * is not <code>null</code>, the result is written to <code>dest</code> then + * returned (this avoids creating a new <code>WritableRaster</code> each + * time this method is called). + * + * @param src the source raster. + * @param dest the destination raster (<code>null</code> permitted). + * + * @return The filtered raster. + */ + WritableRaster filter(Raster src, WritableRaster dest); + + /** + * Returns the bounds of the destination raster on the basis of this + * <code>RasterOp</code> being applied to the specified source raster. + * + * @param src the source raster. + * + * @return The destination bounds. + */ + Rectangle2D getBounds2D(Raster src); + + /** + * Returns a raster that can be used by this <code>RasterOp</code> as the + * destination raster when operating on the specified source raster. + * + * @param src the source raster. + * + * @return A new writable raster that can be used as the destination raster. + */ + WritableRaster createCompatibleDestRaster(Raster src); + + /** + * Returns the point on the destination raster that corresponds to the given + * point on the source raster. + * + * @param srcPoint the source point. + * @param destPoint the destination point (<code>null</code> permitted). + * + * @return The destination point. + */ + Point2D getPoint2D(Point2D srcPoint, Point2D destPoint); + + /** + * Returns the rendering hints for this operation. + * + * @return The rendering hints. + */ + RenderingHints getRenderingHints(); +} diff --git a/libjava/classpath/java/awt/image/RenderedImage.java b/libjava/classpath/java/awt/image/RenderedImage.java new file mode 100644 index 000000000..fd18871a9 --- /dev/null +++ b/libjava/classpath/java/awt/image/RenderedImage.java @@ -0,0 +1,70 @@ +/* RenderedImage.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Rectangle; +import java.util.Vector; + +/** + * NEEDS DOCUMENTATION + */ +public interface RenderedImage +{ + Vector<RenderedImage> getSources(); + Object getProperty(String name); + String[] getPropertyNames(); + ColorModel getColorModel(); + SampleModel getSampleModel(); + int getWidth(); + int getHeight(); + int getMinX(); + int getMinY(); + int getNumXTiles(); + int getNumYTiles(); + int getMinTileX(); + int getMinTileY(); + int getTileWidth(); + int getTileHeight(); + int getTileGridXOffset(); + int getTileGridYOffset(); + Raster getTile(int x, int y); + Raster getData(); + Raster getData(Rectangle r); + WritableRaster copyData(WritableRaster raster); +} // interface RenderedImage diff --git a/libjava/classpath/java/awt/image/ReplicateScaleFilter.java b/libjava/classpath/java/awt/image/ReplicateScaleFilter.java new file mode 100644 index 000000000..94aad85dd --- /dev/null +++ b/libjava/classpath/java/awt/image/ReplicateScaleFilter.java @@ -0,0 +1,257 @@ +/* ReplicateScaleFilter.java -- Java class for filtering images + Copyright (C) 1999 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.util.Hashtable; + +/** + * This filter should be used for fast scaling of images where the result + * does not need to ensure straight lines are still straight, etc. The + * exact method is not defined by Sun but some sort of fast Box filter should + * probably be correct. + * <br> + * Currently this filter does nothing and needs to be implemented. + * + * @author C. Brian Jones (cbj@gnu.org) + */ +public class ReplicateScaleFilter extends ImageFilter +{ + public ReplicateScaleFilter(int width, int height) { + destHeight = height; + destWidth = width; + } + + /** + * The height of the destination image. + */ + protected int destHeight; + + /** + * The width of the destination image. + */ + protected int destWidth; + + /** + * The height of the source image. + */ + protected int srcHeight; + + /** + * The width of the source image. + */ + protected int srcWidth; + + /** + * + */ + protected int srcrows[]; + + /** + * + */ + protected int srccols[]; + + /** + * + */ + protected Object outpixbuf; + + /** + * An <code>ImageProducer</code> indicates the size of the image + * being produced using this method. A filter can override this + * method to intercept these calls from the producer in order to + * change either the width or the height before in turn calling + * the consumer's <code>setDimensions</code> method. + * + * @param width the width of the image + * @param height the height of the image + */ + public void setDimensions(int width, int height) + { + srcWidth = width; + srcHeight = height; + + /* If either destHeight or destWidth is < 0, the image should + maintain its original aspect ratio. When both are < 0, + just maintain the original width and height. */ + if (destWidth < 0 && destHeight < 0) + { + destWidth = width; + destHeight = height; + } + else if (destWidth < 0) + { + destWidth = width * destHeight / srcHeight; + } + else if (destHeight < 0) + { + destHeight = height * destWidth / srcWidth; + } + + if (consumer != null) + consumer.setDimensions(destWidth, destHeight); + } + + /** + * An <code>ImageProducer</code> can set a list of properties + * associated with this image by using this method. + * + * @param props the list of properties associated with this image + */ + public void setProperties(Hashtable<?, ?> props) + { + Hashtable<Object, Object> prop2 = (Hashtable<Object, Object>) props; + prop2.put("filters", "ReplicateScaleFilter"); + if (consumer != null) + consumer.setProperties(prop2); + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as a <code>byte</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, byte[] pixels, int offset, int scansize) + { + if (srcrows == null || srccols == null) + setupSources(); + int dx1 = (2 * x * destWidth + srcWidth - 1) / (2 * destWidth); + int dy1 = (2 * y * destHeight + srcHeight - 1) / (2 * destHeight); + byte[] pix; + if (outpixbuf != null && outpixbuf instanceof byte[]) + { + pix = (byte[]) outpixbuf; + } + else + { + pix = new byte[destWidth]; + outpixbuf = pix; + } + int sy, sx; + for (int yy = dy1; (sy = srcrows[yy]) < y + h; yy++) + { + int offs = offset + scansize * (sy - y); + int xx; + for (xx = dx1; (sx = srccols[xx]) < x + w; xx++) + { + pix[xx] = pixels[offs + sx - x]; + } + if (xx > dx1) + { + consumer.setPixels(dx1, yy, xx - dx1, 1, model, pix, dx1, + destWidth); + } + } + } + + /** + * This function delivers a rectangle of pixels where any + * pixel(m,n) is stored in the array as an <code>int</code> at + * index (n * scansize + m + offset). + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param w the width of the rectangle + * @param h the height of the rectangle + * @param model the <code>ColorModel</code> used to translate the pixels + * @param pixels the array of pixel values + * @param offset the index of the first pixels in the <code>pixels</code> array + * @param scansize the width to use in extracting pixels from the <code>pixels</code> array + */ + public void setPixels(int x, int y, int w, int h, + ColorModel model, int[] pixels, int offset, int scansize) + { + if (srcrows == null || srccols == null) + setupSources(); + int dx1 = (2 * x * destWidth + srcWidth - 1) / (2 * destWidth); + int dy1 = (2 * y * destHeight + srcHeight - 1) / (2 * destHeight); + int[] pix; + if (outpixbuf != null && outpixbuf instanceof int[]) + { + pix = (int[]) outpixbuf; + } + else + { + pix = new int[destWidth]; + outpixbuf = pix; + } + int sy, sx; + for (int yy = dy1; (sy = srcrows[yy]) < y + h; yy++) + { + int offs = offset + scansize * (sy - y); + int xx; + for (xx = dx1; (sx = srccols[xx]) < x + w; xx++) + { + pix[xx] = pixels[offs + sx - x]; + } + if (xx > dx1) + { + consumer.setPixels(dx1, yy, xx - dx1, 1, model, pix, dx1, + destWidth); + } + } + } + + /** + * Sets up the srcrows and srccols arrays. + */ + private void setupSources() + { + srcrows = new int[destHeight + 1]; + for (int y = 0; y <= destHeight; y++) + { + srcrows[y] = (2 * y * srcHeight + srcHeight) / (2 * destHeight); + } + srccols = new int[destWidth + 1]; + for (int x = 0; x <= destWidth; x++) + { + srccols[x] = (2 * x * srcWidth + srcWidth) / (2 * destWidth); + } + } +} diff --git a/libjava/classpath/java/awt/image/RescaleOp.java b/libjava/classpath/java/awt/image/RescaleOp.java new file mode 100644 index 000000000..efab40b7e --- /dev/null +++ b/libjava/classpath/java/awt/image/RescaleOp.java @@ -0,0 +1,385 @@ +/* Copyright (C) 2004, 2006 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.RenderingHints; +import java.awt.geom.Point2D; +import java.awt.geom.Rectangle2D; +import java.util.Arrays; + +/** + * RescaleOp is a filter that changes each pixel by a scaling factor and offset. + * + * For filtering Rasters, either one scaling factor and offset can be specified, + * which will be applied to all bands; or a scaling factor and offset can be + * specified for each band. + * + * For BufferedImages, the scaling may apply to both color and alpha components. + * If only one scaling factor is provided, or if the number of factors provided + * equals the number of color components, the scaling is performed on all color + * components. Otherwise, the scaling is performed on all components including + * alpha. Alpha premultiplication is ignored. + * + * After filtering, if color conversion is necessary, the conversion happens, + * taking alpha premultiplication into account. + * + * @author Jerry Quinn (jlquinn@optonline.net) + * @author Francis Kung (fkung@redhat.com) + */ +public class RescaleOp implements BufferedImageOp, RasterOp +{ + private float[] scale; + private float[] offsets; + private RenderingHints hints = null; + + /** + * Create a new RescaleOp object using the given scale factors and offsets. + * + * The length of the arrays must be equal to the number of bands (or number of + * data or color components) of the raster/image that this Op will be used on, + * otherwise an IllegalArgumentException will be thrown when calling the + * filter method. + * + * @param scaleFactors an array of scale factors. + * @param offsets an array of offsets. + * @param hints any rendering hints to use (can be null). + * @throws NullPointerException if the scaleFactors or offsets array is null. + */ + public RescaleOp(float[] scaleFactors, + float[] offsets, + RenderingHints hints) + { + int length = Math.min(scaleFactors.length, offsets.length); + + scale = new float[length]; + System.arraycopy(scaleFactors, 0, this.scale, 0, length); + + this.offsets = new float[length]; + System.arraycopy(offsets, 0, this.offsets, 0, length); + + this.hints = hints; + } + + /** + * Create a new RescaleOp object using the given scale factor and offset. + * + * The same scale factor and offset will be used on all bands/components. + * + * @param scaleFactor the scale factor to use. + * @param offset the offset to use. + * @param hints any rendering hints to use (can be null). + */ + public RescaleOp(float scaleFactor, + float offset, + RenderingHints hints) + { + scale = new float[]{ scaleFactor }; + offsets = new float[]{offset}; + this.hints = hints; + } + + /** + * Returns the scaling factors. This method accepts an optional array, which + * will be used to store the factors if not null (this avoids allocating a + * new array). If this array is too small to hold all the scaling factors, + * the array will be filled and the remaining factors discarded. + * + * @param scaleFactors array to store the scaling factors in (can be null). + * @return an array of scaling factors. + */ + public final float[] getScaleFactors(float[] scaleFactors) + { + if (scaleFactors == null) + scaleFactors = new float[scale.length]; + System.arraycopy(scale, 0, scaleFactors, 0, Math.min(scale.length, + scaleFactors.length)); + return scaleFactors; + } + + /** + * Returns the offsets. This method accepts an optional array, which + * will be used to store the offsets if not null (this avoids allocating a + * new array). If this array is too small to hold all the offsets, the array + * will be filled and the remaining factors discarded. + * + * @param offsets array to store the offsets in (can be null). + * @return an array of offsets. + */ + public final float[] getOffsets(float[] offsets) + { + if (offsets == null) + offsets = new float[this.offsets.length]; + System.arraycopy(this.offsets, 0, offsets, 0, Math.min(this.offsets.length, + offsets.length)); + return offsets; + } + + /** + * Returns the number of scaling factors / offsets. + * + * @return the number of scaling factors / offsets. + */ + public final int getNumFactors() + { + return scale.length; + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#getRenderingHints() + */ + public final RenderingHints getRenderingHints() + { + return hints; + } + + /** + * Converts the source image using the scale factors and offsets specified in + * the constructor. The resulting image is stored in the destination image if + * one is provided; otherwise a new BufferedImage is created and returned. + * + * The source image cannot use an IndexColorModel, and the destination image + * (if one is provided) must have the same size. + * + * If the final value of a sample is beyond the range of the color model, it + * will be clipped to the appropriate maximum / minimum. + * + * @param src The source image. + * @param dst The destination image. + * @throws IllegalArgumentException if the rasters and/or color spaces are + * incompatible. + * @return The rescaled image. + */ + public final BufferedImage filter(BufferedImage src, BufferedImage dst) + { + // Initial checks + if (scale.length != 1 + && scale.length != src.getColorModel().getNumComponents() + && (scale.length != src.getColorModel().getNumColorComponents())) + throw new IllegalArgumentException("Source image has wrong number of " + + "bands for these scaling factors."); + + if (dst == null) + dst = createCompatibleDestImage(src, null); + else if (src.getHeight() != dst.getHeight() + || src.getWidth() != dst.getWidth()) + throw new IllegalArgumentException("Source and destination images are " + + "different sizes."); + + // Prepare for possible colorspace conversion + BufferedImage dst2 = dst; + if (dst.getColorModel().getColorSpace().getType() != src.getColorModel().getColorSpace().getType()) + dst2 = createCompatibleDestImage(src, src.getColorModel()); + + // Figure out how many bands to scale + int numBands = scale.length; + if (scale.length == 1) + numBands = src.getColorModel().getNumColorComponents(); + boolean[] bands = new boolean[numBands]; + // this assumes the alpha, if present, is the last band + Arrays.fill(bands, true); + + // Perform rescaling + filter(src.getRaster(), dst2.getRaster(), bands); + + // Copy alpha band if needed (ie if it exists and wasn't scaled) + // NOTE: This assumes the alpha component is the last band! + if (src.getColorModel().hasAlpha() + && numBands == src.getColorModel().getNumColorComponents()) + { + + dst2.getRaster().setSamples(0, 0, src.getWidth(), src.getHeight(), + numBands, + src.getRaster().getSamples(0, 0, + src.getWidth(), + src.getHeight(), + numBands, + (int[]) null)); + } + + // Perform colorspace conversion if needed + if (dst != dst2) + new ColorConvertOp(hints).filter(dst2, dst); + + return dst; + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#filter(java.awt.image.Raster, java.awt.image.WritableRaster) + */ + public final WritableRaster filter(Raster src, WritableRaster dest) + { + // Required sanity checks + if (scale.length != 1 && scale.length != src.numBands) + throw new IllegalArgumentException("Number of rasters is incompatible " + + "with the number of scaling " + + "factors provided."); + + if (dest == null) + dest = src.createCompatibleWritableRaster(); + else if (src.getHeight() != dest.getHeight() + || src.getWidth() != dest.getWidth()) + throw new IllegalArgumentException("Source and destination rasters are " + + "different sizes."); + else if (src.numBands != dest.numBands) + throw new IllegalArgumentException("Source and destination rasters " + + "are incompatible."); + + // Filter all bands + boolean[] bands = new boolean[src.getNumBands()]; + Arrays.fill(bands, true); + return filter(src, dest, bands); + } + + /** + * Perform raster-based filtering on a selected number of bands. + * + * The length of the bands array should equal the number of bands; a true + * element indicates filtering should happen on the corresponding band, while + * a false element will skip the band. + * + * The rasters are assumed to be compatible and non-null. + * + * @param src the source raster. + * @param dest the destination raster. + * @param bands an array indicating which bands to filter. + * @throws NullPointerException if any parameter is null. + * @throws ArrayIndexOutOfBoundsException if the bands array is too small. + * @return the destination raster. + */ + private WritableRaster filter(Raster src, WritableRaster dest, boolean[] bands) + { + int[] values = new int[src.getHeight() * src.getWidth()]; + float scaleFactor, offset; + + // Find max sample value, to be used for clipping later + int[] maxValue = src.getSampleModel().getSampleSize(); + for (int i = 0; i < maxValue.length; i++) + maxValue[i] = (int)Math.pow(2, maxValue[i]) - 1; + + // TODO: can this be optimized further? + // Filter all samples of all requested bands + for (int band = 0; band < bands.length; band++) + if (bands[band]) + { + values = src.getSamples(src.getMinX(), src.getMinY(), src.getWidth(), + src.getHeight(), band, values); + + if (scale.length == 1) + { + scaleFactor = scale[0]; + offset = offsets[0]; + } + else + { + scaleFactor = scale[band]; + offset = offsets[band]; + } + + for (int i = 0; i < values.length; i++) + { + values[i] = (int) (values[i] * scaleFactor + offset); + + // Clip if needed + if (values[i] < 0) + values[i] = 0; + if (values[i] > maxValue[band]) + values[i] = maxValue[band]; + } + + dest.setSamples(dest.getMinX(), dest.getMinY(), dest.getWidth(), + dest.getHeight(), band, values); + } + + return dest; + } + + /* + * (non-Javadoc) + * + * @see java.awt.image.BufferedImageOp#createCompatibleDestImage(java.awt.image.BufferedImage, + * java.awt.image.ColorModel) + */ + public BufferedImage createCompatibleDestImage(BufferedImage src, + ColorModel dstCM) + { + if (dstCM == null) + return new BufferedImage(src.getWidth(), src.getHeight(), src.getType()); + + return new BufferedImage(dstCM, + src.getRaster().createCompatibleWritableRaster(), + src.isAlphaPremultiplied(), null); + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#createCompatibleDestRaster(java.awt.image.Raster) + */ + public WritableRaster createCompatibleDestRaster(Raster src) + { + return src.createCompatibleWritableRaster(); + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#getBounds2D(java.awt.image.BufferedImage) + */ + public final Rectangle2D getBounds2D(BufferedImage src) + { + return src.getRaster().getBounds(); + } + + /* (non-Javadoc) + * @see java.awt.image.RasterOp#getBounds2D(java.awt.image.Raster) + */ + public final Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + /* (non-Javadoc) + * @see java.awt.image.BufferedImageOp#getPoint2D(java.awt.geom.Point2D, java.awt.geom.Point2D) + */ + public final Point2D getPoint2D(Point2D src, Point2D dst) + { + if (dst == null) + dst = (Point2D) src.clone(); + else + dst.setLocation(src); + + return dst; + } + +} diff --git a/libjava/classpath/java/awt/image/SampleModel.java b/libjava/classpath/java/awt/image/SampleModel.java new file mode 100644 index 000000000..7e0b18c55 --- /dev/null +++ b/libjava/classpath/java/awt/image/SampleModel.java @@ -0,0 +1,974 @@ +/* Copyright (C) 2000, 2001, 2002, 2005, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +/** + * A <code>SampleModel</code> is used to access pixel data from a + * {@link DataBuffer}. This is used by the {@link Raster} class. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public abstract class SampleModel +{ + /** Width of image described. */ + protected int width; + + /** Height of image described. */ + protected int height; + + /** Number of bands in the image described. Package-private here, + shadowed by ComponentSampleModel. */ + protected int numBands; + + /** + * The DataBuffer type that is used to store the data of the image + * described. + */ + protected int dataType; + + /** + * Creates a new sample model with the specified attributes. + * + * @param dataType the data type (one of {@link DataBuffer#TYPE_BYTE}, + * {@link DataBuffer#TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT}, + * {@link DataBuffer#TYPE_INT}, {@link DataBuffer#TYPE_FLOAT}, + * {@link DataBuffer#TYPE_DOUBLE} or {@link DataBuffer#TYPE_UNDEFINED}). + * @param w the width in pixels (must be greater than zero). + * @param h the height in pixels (must be greater than zero). + * @param numBands the number of bands (must be greater than zero). + * + * @throws IllegalArgumentException if <code>dataType</code> is not one of + * the listed values. + * @throws IllegalArgumentException if <code>w</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>h</code> is less than or equal + * to zero. + * @throws IllegalArgumentException if <code>w * h</code> is greater than + * {@link Integer#MAX_VALUE}. + */ + public SampleModel(int dataType, int w, int h, int numBands) + { + if (dataType != DataBuffer.TYPE_UNDEFINED) + if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_DOUBLE) + throw new IllegalArgumentException("Unrecognised 'dataType' argument."); + + if ((w <= 0) || (h <= 0)) + throw new IllegalArgumentException((w <= 0 ? " width<=0" : " width is ok") + + (h <= 0 ? " height<=0" : " height is ok")); + + long area = (long) w * (long) h; + if (area > Integer.MAX_VALUE) + throw new IllegalArgumentException("w * h exceeds Integer.MAX_VALUE."); + + if (numBands <= 0) + throw new IllegalArgumentException("Requires numBands > 0."); + + this.dataType = dataType; + this.width = w; + this.height = h; + this.numBands = numBands; + } + + /** + * Returns the width of the pixel data accessible via this + * <code>SampleModel</code>. + * + * @return The width. + * + * @see #getHeight() + */ + public final int getWidth() + { + return width; + } + + /** + * Returns the height of the pixel data accessible via this + * <code>SampleModel</code>. + * + * @return The height. + * + * @see #getWidth() + */ + public final int getHeight() + { + return height; + } + + /** + * Returns the number of bands for this <code>SampleModel</code>. + * + * @return The number of bands. + */ + public final int getNumBands() + { + return numBands; + } + + public abstract int getNumDataElements(); + + /** + * Returns the type of the {@link DataBuffer} that this + * <code>SampleModel</code> accesses. + * + * @return The data buffer type. + */ + public final int getDataType() + { + return dataType; + } + + public int getTransferType() + { + // FIXME: Is this a reasonable default implementation? + return dataType; + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * specified data buffer. If <code>iArray</code> is not <code>null</code>, + * it will be populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) + { + if (iArray == null) + iArray = new int[numBands]; + for (int b = 0; b < numBands; b++) + iArray[b] = getSample(x, y, b, data); + return iArray; + } + + /** + * + * This method is provided as a faster alternative to getPixel(), + * that can be used when there is no need to decode the pixel into + * separate sample values. + * + * @param obj An array to return the pixel data in. If null, an + * array of the right type and size will be created. + * + * @return A single pixel as an array object of a primitive type, + * based on the transfer type. Eg. if transfer type is + * DataBuffer.TYPE_USHORT, then a short[] object is returned. + */ + public abstract Object getDataElements(int x, int y, Object obj, + DataBuffer data); + + + public Object getDataElements(int x, int y, int w, int h, Object obj, + DataBuffer data) + { + int size = w * h; + int numDataElements = getNumDataElements(); + int dataSize = numDataElements * size; + + if (obj == null) + { + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + obj = new byte[dataSize]; + break; + case DataBuffer.TYPE_USHORT: + obj = new short[dataSize]; + break; + case DataBuffer.TYPE_INT: + obj = new int[dataSize]; + break; + default: + // Seems like the only sensible thing to do. + throw new ClassCastException(); + } + } + Object pixelData = null; + int outOffset = 0; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + pixelData = getDataElements(xx, yy, pixelData, data); + System.arraycopy(pixelData, 0, obj, outOffset, + numDataElements); + outOffset += numDataElements; + } + } + return obj; + } + + public abstract void setDataElements(int x, int y, Object obj, + DataBuffer data); + + public void setDataElements(int x, int y, int w, int h, + Object obj, DataBuffer data) + { + int numDataElements = getNumDataElements(); + + Object pixelData; + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + pixelData = new byte[numDataElements]; + break; + case DataBuffer.TYPE_USHORT: + case DataBuffer.TYPE_SHORT: + pixelData = new short[numDataElements]; + break; + case DataBuffer.TYPE_INT: + pixelData = new int[numDataElements]; + break; + case DataBuffer.TYPE_FLOAT: + pixelData = new float[numDataElements]; + break; + case DataBuffer.TYPE_DOUBLE: + pixelData = new double[numDataElements]; + break; + default: + // The RI silently igores invalid types. + pixelData = null; + } + + int inOffset = 0; + if (pixelData != null) + { + for (int yy=y; yy<(y+h); yy++) + { + for (int xx=x; xx<(x+w); xx++) + { + System.arraycopy(obj, inOffset, pixelData, 0, numDataElements); + setDataElements(xx, yy, pixelData, data); + inOffset += numDataElements; + } + } + } + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * specified data buffer. If <code>fArray</code> is not <code>null</code>, + * it will be populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public float[] getPixel(int x, int y, float[] fArray, DataBuffer data) + { + if (fArray == null) + fArray = new float[numBands]; + + for (int b = 0; b < numBands; b++) + { + fArray[b] = getSampleFloat(x, y, b, data); + } + return fArray; + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * specified data buffer. If <code>dArray</code> is not <code>null</code>, + * it will be populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public double[] getPixel(int x, int y, double[] dArray, DataBuffer data) { + if (dArray == null) + dArray = new double[numBands]; + for (int b = 0; b < numBands; b++) + { + dArray[b] = getSampleDouble(x, y, b, data); + } + return dArray; + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). If <code>iArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int size = w * h; + int outOffset = 0; + int[] pixel = null; + if (iArray == null) + iArray = new int[w * h * numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + pixel = getPixel(xx, yy, pixel, data); + System.arraycopy(pixel, 0, iArray, outOffset, numBands); + outOffset += numBands; + } + } + return iArray; + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). If <code>fArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public float[] getPixels(int x, int y, int w, int h, float[] fArray, + DataBuffer data) + { + int size = w * h; + int outOffset = 0; + float[] pixel = null; + if (fArray == null) fArray = new float[w * h * numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + pixel = getPixel(xx, yy, pixel, data); + System.arraycopy(pixel, 0, fArray, outOffset, numBands); + outOffset += numBands; + } + } + return fArray; + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). If <code>dArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public double[] getPixels(int x, int y, int w, int h, double[] dArray, + DataBuffer data) + { + int size = w * h; + int outOffset = 0; + double[] pixel = null; + if (dArray == null) + dArray = new double[w * h * numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + pixel = getPixel(xx, yy, pixel, data); + System.arraycopy(pixel, 0, dArray, outOffset, numBands); + outOffset += numBands; + } + } + return dArray; + } + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public abstract int getSample(int x, int y, int b, DataBuffer data); + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + * + * @see #getSample(int, int, int, DataBuffer) + */ + public float getSampleFloat(int x, int y, int b, DataBuffer data) + { + return getSample(x, y, b, data); + } + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + * + * @see #getSample(int, int, int, DataBuffer) + */ + public double getSampleDouble(int x, int y, int b, DataBuffer data) + { + return getSampleFloat(x, y, b, data); + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the specified data buffer. If + * <code>iArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getSamples(int x, int y, int w, int h, int b, + int[] iArray, DataBuffer data) + { + int size = w * h; + int outOffset = 0; + if (iArray == null) + iArray = new int[size]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + iArray[outOffset++] = getSample(xx, yy, b, data); + } + } + return iArray; + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the specified data buffer. If + * <code>fArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param fArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public float[] getSamples(int x, int y, int w, int h, int b, + float[] fArray, DataBuffer data) + { + int size = w * h; + int outOffset = 0; + if (fArray == null) + fArray = new float[size]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + fArray[outOffset++] = getSampleFloat(xx, yy, b, data); + } + } + return fArray; + } + + /** + * Returns an array containing the samples from one band for the pixels in + * the region specified by (x, y, w, h) in the specified data buffer. If + * <code>dArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param dArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public double[] getSamples(int x, int y, int w, int h, int b, + double[] dArray, DataBuffer data) + { + int size = w * h; + int outOffset = 0; + if (dArray == null) + dArray = new double[size]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + dArray[outOffset++] = getSampleDouble(xx, yy, b, data); + } + } + return dArray; + } + + /** + * Sets the samples for the pixel at (x, y) in the specified data buffer to + * the specified values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixel(int x, int y, int[] iArray, DataBuffer data) + { + for (int b = 0; b < numBands; b++) + setSample(x, y, b, iArray[b], data); + } + + /** + * Sets the samples for the pixel at (x, y) in the specified data buffer to + * the specified values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param fArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>fArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixel(int x, int y, float[] fArray, DataBuffer data) + { + for (int b = 0; b < numBands; b++) + setSample(x, y, b, fArray[b], data); + } + + /** + * Sets the samples for the pixel at (x, y) in the specified data buffer to + * the specified values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param dArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>dArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixel(int x, int y, double[] dArray, DataBuffer data) + { + for (int b = 0; b < numBands; b++) + setSample(x, y, b, dArray[b], data); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray the pixel sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int inOffset = 0; + int[] pixel = new int[numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + System.arraycopy(iArray, inOffset, pixel, 0, numBands); + setPixel(xx, yy, pixel, data); + inOffset += numBands; + } + } + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param fArray the pixel sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>fArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, float[] fArray, + DataBuffer data) + { + int inOffset = 0; + float[] pixel = new float[numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + System.arraycopy(fArray, inOffset, pixel, 0, numBands); + setPixel(xx, yy, pixel, data); + inOffset += numBands; + } + } + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param dArray the pixel sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>dArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, double[] dArray, + DataBuffer data) + { + int inOffset = 0; + double[] pixel = new double[numBands]; + for (int yy = y; yy < (y + h); yy++) + { + for (int xx = x; xx < (x + w); xx++) + { + System.arraycopy(dArray, inOffset, pixel, 0, numBands); + setPixel(xx, yy, pixel, data); + inOffset += numBands; + } + } + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public abstract void setSample(int x, int y, int b, int s, + DataBuffer data); + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, float s, + DataBuffer data) + { + setSample(x, y, b, (int) s, data); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, double s, + DataBuffer data) + { + setSample(x, y, b, (float) s, data); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + int[] iArray, DataBuffer data) + { + int size = w * h; + int inOffset = 0; + for (int yy = y; yy < (y + h); yy++) + for (int xx = x; xx < (x + w); xx++) + setSample(xx, yy, b, iArray[inOffset++], data); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param fArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + float[] fArray, DataBuffer data) + { + int size = w * h; + int inOffset = 0; + for (int yy = y; yy < (y + h); yy++) + for (int xx = x; xx < (x + w); xx++) + setSample(xx, yy, b, fArray[inOffset++], data); + + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param dArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + double[] dArray, DataBuffer data) { + int size = w * h; + int inOffset = 0; + for (int yy = y; yy < (y + h); yy++) + for (int xx = x; xx < (x + w); xx++) + setSample(xx, yy, b, dArray[inOffset++], data); + } + + /** + * Creates a new <code>SampleModel</code> that is compatible with this + * model and has the specified width and height. + * + * @param w the width (in pixels). + * @param h the height (in pixels). + * + * @return The new sample model. + */ + public abstract SampleModel createCompatibleSampleModel(int w, int h); + + /** + * Return a SampleModel with a subset of the bands in this model. + * + * Selects bands.length bands from this sample model. The bands chosen + * are specified in the indices of bands[]. This also permits permuting + * the bands as well as taking a subset. Thus, giving an array with + * 1, 2, 3, ..., numbands, will give an identical sample model. + * + * @param bands Array with band indices to include. + * @return A new sample model + */ + public abstract SampleModel createSubsetSampleModel(int[] bands); + + /** + * Creates a new {@link DataBuffer} of the correct type and size for this + * <code>SampleModel</code>. + * + * @return The data buffer. + */ + public abstract DataBuffer createDataBuffer(); + + /** + * Returns an array containing the size (in bits) for each band accessed by + * the <code>SampleModel</code>. + * + * @return An array. + * + * @see #getSampleSize(int) + */ + public abstract int[] getSampleSize(); + + /** + * Returns the size (in bits) of the samples for the specified band. + * + * @param band the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * + * @return The sample size (in bits). + */ + public abstract int getSampleSize(int band); +} diff --git a/libjava/classpath/java/awt/image/ShortLookupTable.java b/libjava/classpath/java/awt/image/ShortLookupTable.java new file mode 100644 index 000000000..3e276fe9f --- /dev/null +++ b/libjava/classpath/java/awt/image/ShortLookupTable.java @@ -0,0 +1,177 @@ +/* ShortLookupTable.java -- Java class for a pixel translation table. + Copyright (C) 2004, 2005, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * ShortLookupTable represents translation arrays for pixel values. It wraps + * one or more data arrays for each layer (or component) in an image, such as + * Alpha, R, G, and B. When doing translation, the offset is subtracted from + * the pixel values to allow a subset of an array to be used. + * + * @author Jerry Quinn (jlquinn@optonline.net) + * @version 1.0 + */ +public class ShortLookupTable extends LookupTable +{ + // Array of translation tables. + private short data[][]; + + /** + * Creates a new <code>ShortLookupTable</code> instance. + * + * Offset is subtracted from pixel values when looking up in the translation + * tables. If data.length is one, the same table is applied to all pixel + * components. + * + * @param offset Offset to be subtracted. + * @param data Array of lookup tables. + * @exception IllegalArgumentException if offset < 0 or data.length < 1. + */ + public ShortLookupTable(int offset, short[][] data) + throws IllegalArgumentException + { + super(offset, data.length); + + // tests show that Sun's implementation creates a new array to store the + // references from the incoming 'data' array - not sure why, but we'll + // match that behaviour just in case it matters... + this.data = new short[data.length][]; + for (int i = 0; i < data.length; i++) + this.data[i] = data[i]; + } + + /** + * Creates a new <code>ShortLookupTable</code> instance. + * + * Offset is subtracted from pixel values when looking up in the translation + * table. The same table is applied to all pixel components. + * + * @param offset Offset to be subtracted. + * @param data Lookup table for all components (<code>null</code> not + * permitted). + * @exception IllegalArgumentException if offset < 0. + */ + public ShortLookupTable(int offset, short[] data) + throws IllegalArgumentException + { + super(offset, 1); + if (data == null) + throw new NullPointerException("Null 'data' argument."); + this.data = new short[][] {data}; + } + + /** + * Return the lookup tables. This is a reference to the actual table, so + * modifying the contents of the returned array will modify the lookup table. + * + * @return The lookup table. + */ + public final short[][] getTable() + { + return data; + } + + /** + * Return translated values for a pixel. + * + * For each value in the pixel src, use the value minus offset as an index + * in the component array and copy the value there to the output for the + * component. If dest is null, the output is a new array, otherwise the + * translated values are written to dest. Dest can be the same array as + * src. + * + * For example, if the pixel src is [2, 4, 3], and offset is 1, the output + * is [comp1[1], comp2[3], comp3[2]], where comp1, comp2, and comp3 are the + * translation arrays. + * + * @param src Component values of a pixel. + * @param dst Destination array for values, or null. + * @return Translated values for the pixel. + */ + public int[] lookupPixel(int[] src, int[] dst) + throws ArrayIndexOutOfBoundsException + { + if (dst == null) + dst = new int[src.length]; + + if (data.length == 1) + for (int i = 0; i < src.length; i++) + dst[i] = data[0][src[i] - offset]; + else + for (int i = 0; i < src.length; i++) + dst[i] = data[i][src[i] - offset]; + + return dst; + } + + /** + * Return translated values for a pixel. + * + * For each value in the pixel src, use the value minus offset as an index + * in the component array and copy the value there to the output for the + * component. If dest is null, the output is a new array, otherwise the + * translated values are written to dest. Dest can be the same array as + * src. + * + * For example, if the pixel src is [2, 4, 3], and offset is 1, the output + * is [comp1[1], comp2[3], comp3[2]], where comp1, comp2, and comp3 are the + * translation arrays. + * + * @param src Component values of a pixel. + * @param dst Destination array for values, or null. + * @return Translated values for the pixel. + * + */ + public short[] lookupPixel(short[] src, short[] dst) + throws ArrayIndexOutOfBoundsException + { + if (dst == null) + dst = new short[src.length]; + + if (data.length == 1) + for (int i = 0; i < src.length; i++) + dst[i] = data[0][((int) src[i]) - offset]; + else + for (int i = 0; i < src.length; i++) + dst[i] = data[i][((int) src[i]) - offset]; + + return dst; + + } +} diff --git a/libjava/classpath/java/awt/image/SinglePixelPackedSampleModel.java b/libjava/classpath/java/awt/image/SinglePixelPackedSampleModel.java new file mode 100644 index 000000000..143581db9 --- /dev/null +++ b/libjava/classpath/java/awt/image/SinglePixelPackedSampleModel.java @@ -0,0 +1,586 @@ +/* Copyright (C) 2000, 2002, 2003, 2004, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.awt.image; + +import java.util.Arrays; + +import gnu.java.awt.BitMaskExtent; +import gnu.java.lang.CPStringBuilder; + +/** + * A <code>SampleModel</code> used when all samples are stored in a single + * data element in the {@link DataBuffer}, and each data element contains + * samples for one pixel only. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class SinglePixelPackedSampleModel extends SampleModel +{ + private int scanlineStride; + private int[] bitMasks; + private int[] bitOffsets; + private int[] sampleSize; + + /** + * Creates a new <code>SinglePixelPackedSampleModel</code>. + * + * @param dataType the data buffer type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param bitMasks an array containing the bit mask used to extract the + * sample value for each band. + */ + public SinglePixelPackedSampleModel(int dataType, int w, int h, + int[] bitMasks) + { + this(dataType, w, h, w, bitMasks); + } + + /** + * Creates a new <code>SinglePixelPackedSampleModel</code>. + * + * @param dataType the data buffer type. + * @param w the width (in pixels). + * @param h the height (in pixels). + * @param scanlineStride the number of data elements between a pixel on one + * row and the corresponding pixel on the next row. + * @param bitMasks an array containing the bit mask used to extract the + * sample value for each band. + */ + public SinglePixelPackedSampleModel(int dataType, int w, int h, + int scanlineStride, int[] bitMasks) + { + super(dataType, w, h, bitMasks.length); + + switch (dataType) + { + case DataBuffer.TYPE_BYTE: + case DataBuffer.TYPE_USHORT: + case DataBuffer.TYPE_INT: + break; + default: + throw new IllegalArgumentException( + "SinglePixelPackedSampleModel unsupported dataType"); + } + + this.scanlineStride = scanlineStride; + this.bitMasks = bitMasks; + + bitOffsets = new int[numBands]; + sampleSize = new int[numBands]; + + BitMaskExtent extent = new BitMaskExtent(); + for (int b = 0; b < numBands; b++) + { + // the mask is an unsigned integer + long mask = bitMasks[b] & 0xFFFFFFFFL; + extent.setMask(mask); + sampleSize[b] = extent.bitWidth; + bitOffsets[b] = extent.leastSignificantBit; + } + } + + /** + * Returns the number of data elements. + * + * @return <code>1</code>. + */ + public int getNumDataElements() + { + return 1; + } + + /** + * Creates a new <code>SampleModel</code> that is compatible with this + * model and has the specified width and height. + * + * @param w the width (in pixels). + * @param h the height (in pixels). + * + * @return The new sample model. + */ + public SampleModel createCompatibleSampleModel(int w, int h) + { + /* FIXME: We can avoid recalculation of bit offsets and sample + sizes here by passing these from the current instance to a + special private constructor. */ + return new SinglePixelPackedSampleModel(dataType, w, h, bitMasks); + } + + + /** + * Creates a DataBuffer for holding pixel data in the format and + * layout described by this SampleModel. The returned buffer will + * consist of one single bank. + * + * @return The data buffer. + */ + public DataBuffer createDataBuffer() + { + // We can save (scanlineStride - width) pixels at the very end of + // the buffer. The Sun reference implementation (J2SE 1.3.1 and + // 1.4.1_01) seems to do this; tested with Mauve test code. + int size = scanlineStride * (height - 1) + width; + + DataBuffer buffer = null; + switch (getTransferType()) + { + case DataBuffer.TYPE_BYTE: + buffer = new DataBufferByte(size); + break; + case DataBuffer.TYPE_USHORT: + buffer = new DataBufferUShort(size); + break; + case DataBuffer.TYPE_INT: + buffer = new DataBufferInt(size); + break; + } + return buffer; + } + + /** + * Returns an array containing the size (in bits) for each band accessed by + * the <code>SampleModel</code>. + * + * @return An array. + * + * @see #getSampleSize(int) + */ + public int[] getSampleSize() + { + return (int[]) sampleSize.clone(); + } + + /** + * Returns the size (in bits) of the samples for the specified band. + * + * @param band the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * + * @return The sample size (in bits). + */ + public int getSampleSize(int band) + { + return sampleSize[band]; + } + + /** + * Returns the index in the data buffer that stores the pixel at (x, y). + * + * @param x the x-coordinate. + * @param y the y-coordinate. + * + * @return The index in the data buffer that stores the pixel at (x, y). + */ + public int getOffset(int x, int y) + { + return scanlineStride*y + x; + } + + public int[] getBitOffsets() + { + return bitOffsets; + } + + public int[] getBitMasks() + { + return bitMasks; + } + + /** + * Returns the number of data elements from a pixel in one row to the + * corresponding pixel in the next row. + * + * @return The scanline stride. + */ + public int getScanlineStride() + { + return scanlineStride; + } + + /** + * Creates a new <code>SinglePixelPackedSampleModel</code> that accesses + * the specified subset of bands. + * + * @param bands an array containing band indices (<code>null</code> not + * permitted). + * + * @return A new sample model. + * + * @throws NullPointerException if <code>bands</code> is <code>null</code>. + * @throws RasterFormatException if <code>bands.length</code> is greater + * than the number of bands in this model. + */ + public SampleModel createSubsetSampleModel(int[] bands) + { + if (bands.length > numBands) + throw new RasterFormatException("Too many bands."); + + int numBands = bands.length; + + int[] bitMasks = new int[numBands]; + + for (int b = 0; b < numBands; b++) + bitMasks[b] = this.bitMasks[bands[b]]; + + return new SinglePixelPackedSampleModel(dataType, width, height, + scanlineStride, bitMasks); + } + + public Object getDataElements(int x, int y, Object obj, + DataBuffer data) + { + int type = getTransferType(); + Object ret = null; + switch (type) + { + case DataBuffer.TYPE_BYTE: + { + byte[] in = (byte[]) obj; + if (in == null) + in = new byte[1]; + in[0] = (byte) data.getElem(x + y * scanlineStride); + ret = in; + } + break; + case DataBuffer.TYPE_USHORT: + { + short[] in = (short[]) obj; + if (in == null) + in = new short[1]; + in[0] = (short) data.getElem(x + y * scanlineStride); + ret = in; + } + break; + case DataBuffer.TYPE_INT: + { + int[] in = (int[]) obj; + if (in == null) + in = new int[1]; + in[0] = data.getElem(x + y * scanlineStride); + ret = in; + } + break; + } + return ret; + } + + /** + * Returns an array containing the samples for the pixel at (x, y) in the + * specified data buffer. If <code>iArray</code> is not <code>null</code>, + * it will be populated with the sample values and returned as the result of + * this function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) + { + int offset = scanlineStride*y + x; + if (iArray == null) iArray = new int[numBands]; + int samples = data.getElem(offset); + + for (int b = 0; b < numBands; b++) + iArray[b] = (samples & bitMasks[b]) >>> bitOffsets[b]; + + return iArray; + } + + /** + * Returns an array containing the samples for the pixels in the region + * specified by (x, y, w, h) in the specified data buffer. The array is + * ordered by pixels (that is, all the samples for the first pixel are + * grouped together, followed by all the samples for the second pixel, and so + * on). If <code>iArray</code> is not <code>null</code>, it will be + * populated with the sample values and returned as the result of this + * function (this avoids allocating a new array instance). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray an array to populate with the sample values and return as + * the result (if <code>null</code>, a new array will be allocated). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The pixel sample values. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int[] getPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int offset = scanlineStride*y + x; + if (iArray == null) iArray = new int[numBands*w*h]; + int outOffset = 0; + for (y = 0; y < h; y++) + { + int lineOffset = offset; + for (x = 0; x < w; x++) + { + int samples = data.getElem(lineOffset++); + for (int b = 0; b < numBands; b++) + iArray[outOffset++] = (samples & bitMasks[b]) >>> bitOffsets[b]; + } + offset += scanlineStride; + } + return iArray; + } + + /** + * Returns the sample value for the pixel at (x, y) in the specified data + * buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param data the data buffer (<code>null</code> not permitted). + * + * @return The sample value. + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public int getSample(int x, int y, int b, DataBuffer data) + { + int offset = scanlineStride*y + x; + int samples = data.getElem(offset); + return (samples & bitMasks[b]) >>> bitOffsets[b]; + } + + public void setDataElements(int x, int y, Object obj, DataBuffer data) + { + int transferType = getTransferType(); + switch (transferType) + { + case DataBuffer.TYPE_BYTE: + { + byte[] in = (byte[]) obj; + data.setElem(y * scanlineStride + x, ((int) in[0]) & 0xff); + } + break; + case DataBuffer.TYPE_USHORT: + { + short[] in = (short[]) obj; + data.setElem(y * scanlineStride + x, ((int) in[0]) & 0xffff); + } + break; + case DataBuffer.TYPE_INT: + { + int[] in = (int[]) obj; + data.setElem(y * scanlineStride + x, in[0]); + break; + } + } + } + + /** + * Sets the samples for the pixel at (x, y) in the specified data buffer to + * the specified values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample values (<code>null</code> not permitted). + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if either <code>iArray</code> or + * <code>data</code> is <code>null</code>. + */ + public void setPixel(int x, int y, int[] iArray, DataBuffer data) + { + int offset = scanlineStride*y + x; + + int samples = 0; + for (int b = 0; b < numBands; b++) + samples |= (iArray[b] << bitOffsets[b]) & bitMasks[b]; + + data.setElem(offset, samples); + } + + /** + * This method implements a more efficient way to set pixels than the default + * implementation of the super class. It copies the pixel components directly + * from the input array instead of creating a intermediate buffer. + * @param x The x-coordinate of the pixel rectangle in <code>obj</code>. + * @param y The y-coordinate of the pixel rectangle in <code>obj</code>. + * @param w The width of the pixel rectangle in <code>obj</code>. + * @param h The height of the pixel rectangle in <code>obj</code>. + * @param iArray The primitive array containing the pixels to set. + * @param data The DataBuffer to store the pixels into. + * @see java.awt.image.SampleModel#setPixels(int, int, int, int, int[], + * java.awt.image.DataBuffer) + */ + public void setPixels(int x, int y, int w, int h, int[] iArray, + DataBuffer data) + { + int inOffset = 0; + for (int yy=y; yy<(y+h); yy++) + { + int offset = scanlineStride*yy + x; + for (int xx=x; xx<(x+w); xx++) + { + int samples = 0; + for (int b = 0; b < numBands; b++) + samples |= (iArray[inOffset+b] << bitOffsets[b]) & bitMasks[b]; + data.setElem(0, offset, samples); + inOffset += numBands; + offset += 1; + } + } + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the + * specified data buffer. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + * @param data the data buffer (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>data</code> is <code>null</code>. + */ + public void setSample(int x, int y, int b, int s, DataBuffer data) + { + int offset = scanlineStride*y + x; + int samples = data.getElem(offset); + int bitMask = bitMasks[b]; + samples &= ~bitMask; + samples |= (s << bitOffsets[b]) & bitMask; + data.setElem(offset, samples); + } + + /** + * Tests this sample model for equality with an arbitrary object. This + * method returns <code>true</code> if and only if: + * <ul> + * <li><code>obj</code> is not <code>null</code>; + * <li><code>obj</code> is an instance of + * <code>SinglePixelPackedSampleModel</code>; + * <li>both models have the same: + * <ul> + * <li><code>dataType</code>; + * <li><code>width</code>; + * <li><code>height</code>; + * <li><code>numBands</code>; + * <li><code>scanlineStride</code>; + * <li><code>bitMasks</code>; + * <li><code>bitOffsets</code>. + * </ul> + * </li> + * </ul> + * + * @param obj the object (<code>null</code> permitted) + * + * @return <code>true</code> if this model is equal to <code>obj</code>, and + * <code>false</code> otherwise. + */ + public boolean equals(Object obj) + { + if (this == obj) + return true; + if (! (obj instanceof SinglePixelPackedSampleModel)) + return false; + SinglePixelPackedSampleModel that = (SinglePixelPackedSampleModel) obj; + if (this.dataType != that.dataType) + return false; + if (this.width != that.width) + return false; + if (this.height != that.height) + return false; + if (this.numBands != that.numBands) + return false; + if (this.scanlineStride != that.scanlineStride) + return false; + if (!Arrays.equals(this.bitMasks, that.bitMasks)) + return false; + if (!Arrays.equals(this.bitOffsets, that.bitOffsets)) + return false; + return true; + } + + /** + * Returns a hash code for this <code>SinglePixelPackedSampleModel</code>. + * + * @return A hash code. + */ + public int hashCode() + { + // this hash code won't match Sun's, but that shouldn't matter... + int result = 193; + result = 37 * result + dataType; + result = 37 * result + width; + result = 37 * result + height; + result = 37 * result + numBands; + result = 37 * result + scanlineStride; + for (int i = 0; i < bitMasks.length; i++) + result = 37 * result + bitMasks[i]; + for (int i = 0; i < bitOffsets.length; i++) + result = 37 * result + bitOffsets[i]; + return result; + } + + /** + * Creates a String with some information about this SampleModel. + * @return A String describing this SampleModel. + * @see java.lang.Object#toString() + */ + public String toString() + { + CPStringBuilder result = new CPStringBuilder(); + result.append(getClass().getName()); + result.append("["); + result.append("scanlineStride=").append(scanlineStride); + for(int i = 0; i < bitMasks.length; i+=1) + { + result.append(", mask[").append(i).append("]=0x").append( + Integer.toHexString(bitMasks[i])); + } + + result.append("]"); + return result.toString(); + } +} diff --git a/libjava/classpath/java/awt/image/TileObserver.java b/libjava/classpath/java/awt/image/TileObserver.java new file mode 100644 index 000000000..769888e40 --- /dev/null +++ b/libjava/classpath/java/awt/image/TileObserver.java @@ -0,0 +1,47 @@ +/* TileObserver.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +/** + * NEEDS DOCUMENTATION + */ +public interface TileObserver +{ + void tileUpdate(WritableRenderedImage src, int x, int y, boolean writable); +} // interface TileObserver diff --git a/libjava/classpath/java/awt/image/VolatileImage.java b/libjava/classpath/java/awt/image/VolatileImage.java new file mode 100644 index 000000000..308654162 --- /dev/null +++ b/libjava/classpath/java/awt/image/VolatileImage.java @@ -0,0 +1,253 @@ +/* VolatileImage.java -- a hardware-accelerated image buffer + Copyright (C) 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Graphics; +import java.awt.Graphics2D; +import java.awt.GraphicsConfiguration; +import java.awt.Image; +import java.awt.Transparency; +import java.awt.ImageCapabilities; + +/** + * VolatileImage represents a hardware-accelerated graphics buffer. + * The native graphics system may free or damage the resources + * occupied by a VolatileImage at any time. As such, one must + * frequently check the "validity" of the image buffer's resources. + * + * A volatile image's "validity" depends on multiple factors. Its + * resources may have become unavailble in which case you must + * reallocate them. If you move the image from one output device to + * another, you may need to recreate the image's resources if the new + * output device's capabilities don't match the old one's. Finally, + * if the contents of the image's buffer have been damaged you must + * re-render the image. + * + * VolatileImages should always be created using either + * Component.createVolatileImage or + * GraphicsConfiguration.createCompatibleVolatileImage. + */ +public abstract class VolatileImage extends Image + implements Transparency +{ + /** + * One of validate's possible return values. Indicates that the + * image buffer matches its graphics configuration's capabilities + * and that its resources are initialized and ready to be drawn + * into. Also implies that any existing image rendered to the + * buffer is intact and need not be re-rendered. + */ + public static final int IMAGE_OK = 0; + + /** + * One of validate's possible return values. Indicates that the + * image buffer has been restored, meaning that it is valid and + * ready-to-use but that its previous contents have been lost. This + * return value implies that the image needs to be re-rendered. + */ + public static final int IMAGE_RESTORED = 1; + + /** + * One of validate's possible return values. Indicates that the + * image buffer type is unsupported by the current graphics + * configuration. The graphics configuration may have changed, for + * example if the image moved from one output device to another. + * This return value implies that the image buffer's resources + * should be re-acquired. + */ + public static final int IMAGE_INCOMPATIBLE = 2; + + /** + * This image's transparency type. One of Transparency.BITMASK, + * Transparency.OPAQUE or Transparency.TRANSLUCENT. + * + * @since 1.5 + */ + protected int transparency; + + /** + * Default constructor. VolatileImages should not be created + * directly. Rather, you should use Component.createVolatileImage + * or GraphicsConfiguration.createCompatibleVolatileImage. + */ + public VolatileImage() + { + } + + /** + * Returns an image representing the current state of the volatile + * image buffer. The returned image is static meaning that it is + * not updated after being created. It is a snapshot of the + * volatile image buffer at the time getSnapshot is called. + * + * This method, which reads pixels from the volatile image buffer, + * may be less-performant than methods that write pixels since + * VolatileImages are typically optimized for writing. + * + * @return a BufferedImage representing this VolatileImage + */ + public abstract BufferedImage getSnapshot(); + + /** + * Returns the width of this image buffer. + * + * @return the width of this VolatileImage + */ + public abstract int getWidth(); + + /** + * Returns the height of this image buffer. + * + * @return the height of this VolatileImage + */ + public abstract int getHeight(); + + /** + * Calling this method is equivalent to calling + * getSnapshot().getSource(). The ImageProducer produces pixels + * from the BufferedImage snapshot and not from the VolatileImage + * itself. Thus, changes to the VolatileImage that occur after this + * ImageProducer has been retrieved will not be reflected in the + * produced pixels. + * + * This method, which reads pixels from the volatile image buffer, + * may be less-performant than methods that write pixels since + * VolatileImages are typically optimized for writing. + * + * @return an ImageProducer for a static BufferedImage snapshot of + * this image buffer + */ + public ImageProducer getSource() + { + return getSnapshot().getSource(); + } + + /** + * Releases the system resources taken by this image. + */ + public void flush() + { + } + + /** + * Returns a Graphics2D object that can be used to draw onto this + * image. This method is present for backwards-compatibility. It + * simply returns the result of createGraphics. + * + * @return a Graphics2D object that can be used to draw onto this + * image + */ + public Graphics getGraphics() + { + return createGraphics(); + } + + /** + * Returns a Graphics2D object that can be used to draw onto this + * image. + * + * @return a Graphics2D object that can be used to draw onto this + * image + */ + public abstract Graphics2D createGraphics(); + + /** + * Validates and restores this image. If the image buffer has + * become unavailable for further use since the last call to + * validate, validate will allocate a new image buffer. The image + * is also "validated" against the GraphicsConfiguration parameter. + * + * "Validating" the image means checking that the capabilities it + * requires of the output device are indeed supported by the given + * output device. If the image's characteristics, which can be + * highly output device-specific, are not supported by the graphics + * configuration, then IMAGE_INCOMPATIBLE will be returned. This + * can happen, for example, if this image was created on one output + * device, then validated against a different output device with + * different capabilities. Calling validate with a NULL gc argument + * causes validate to skip the validation test. + * + * @param gc graphics configuration against which to validate or + * NULL + * + * @return a code indicating the result of validation. One of: + * <ul> + * <li><code>IMAGE_OK</code> if the image did not need to be + * validated and didn't need to be restored</li> + * <li><code>IMAGE_RESTORED</code> if the image may need to be + * re-rendered.</li> + * <li><code>IMAGE_INCOMPATIBLE</code> if this image's + * requirements are not fulfilled by the graphics configuration + * parameter. This implies that you need to create a new + * VolatileImage for the different GraphicsConfiguration or + * Component. This return value implies nothing about whether the + * image is valid or needs to be re-rendered.</li> + * </ul> + */ + public abstract int validate(GraphicsConfiguration gc); + + /** + * Returns true if the contents of the image buffer have been + * damaged or if the image buffer's resources have been reclaimed by + * the graphics system. You should call this method after a series + * of rendering operations to or from the image, to see if the image + * buffer needs to be revalidated or the image re-rendered. + * + * @return true if the validate should be called, false otherwise + */ + public abstract boolean contentsLost(); + + /** + * Returns the capabilities of this image buffer. + * + * @return the capabilities of this image buffer + */ + public abstract ImageCapabilities getCapabilities(); + + /** + * Returns the transparency type of this image. + * + * @return Transparency.OPAQUE, Transparency.BITMASK or + * Transparency.TRANSLUCENT + */ + public int getTransparency() + { + return transparency; + } +} diff --git a/libjava/classpath/java/awt/image/WritableRaster.java b/libjava/classpath/java/awt/image/WritableRaster.java new file mode 100644 index 000000000..68774f785 --- /dev/null +++ b/libjava/classpath/java/awt/image/WritableRaster.java @@ -0,0 +1,448 @@ +/* Copyright (C) 2000, 2002, 2003, 2006, Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Point; +import java.awt.Rectangle; + +/** + * A raster with methods to support updating pixel values. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class WritableRaster extends Raster +{ + /** + * Creates a new <code>WritableRaster</code>. + * + * @param sampleModel the sample model. + * @param origin the origin. + */ + protected WritableRaster(SampleModel sampleModel, Point origin) + { + this(sampleModel, sampleModel.createDataBuffer(), origin); + } + + /** + * Creates a new <code>WritableRaster</code> instance. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param origin the origin. + */ + protected WritableRaster(SampleModel sampleModel, DataBuffer dataBuffer, + Point origin) + { + this(sampleModel, dataBuffer, + new Rectangle(origin != null ? origin.x : 0, + origin != null ? origin.y : 0, + sampleModel.getWidth(), sampleModel.getHeight()), + origin, null); + } + + /** + * Creates a new <code>WritableRaster</code> instance. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param aRegion the raster's bounds. + * @param sampleModelTranslate the translation. + * @param parent the parent. + */ + protected WritableRaster(SampleModel sampleModel, + DataBuffer dataBuffer, + Rectangle aRegion, + Point sampleModelTranslate, + WritableRaster parent) + { + super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent); + } + + /** + * Returns the raster's parent, cast as a {@link WritableRaster}. + * + * @return The raster's parent. + */ + public WritableRaster getWritableParent() + { + return (WritableRaster) getParent(); + } + + /** + * @param childMinX + * @param childMinY + * @return + */ + public WritableRaster createWritableTranslatedChild(int childMinX, + int childMinY) + { + return createWritableChild(minX, minY, width, height, + childMinX, childMinY, null); + } + + /** + * + * @param parentX + * @param parentY + * @param w + * @param h + * @param childMinX + * @param childMinY + * @param bandList + * @return + */ + public WritableRaster createWritableChild(int parentX, int parentY, + int w, int h, int childMinX, int childMinY, int[] bandList) + { + // This mirrors the code from the super class + + if (parentX < minX || parentX + w > minX + width + || parentY < minY || parentY + h > minY + height) + throw new RasterFormatException("Child raster extends beyond parent"); + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + return new WritableRaster(sm, getDataBuffer(), + new Rectangle(childMinX, childMinY, w, h), + new Point(sampleModelTranslateX + childMinX - + parentX, + sampleModelTranslateY + childMinY - + parentY), + this); + } + + public Raster createChild(int parentX, int parentY, int width, + int height, int childMinX, int childMinY, + int[] bandList) + { + if (parentX < minX || parentX + width > minX + this.width + || parentY < minY || parentY + height > minY + this.height) + throw new RasterFormatException("Child raster extends beyond parent"); + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + return new WritableRaster(sm, dataBuffer, + new Rectangle(childMinX, childMinY, width, height), + new Point(sampleModelTranslateX + childMinX - parentX, + sampleModelTranslateY + childMinY - parentY), + this); + } + + public void setDataElements(int x, int y, Object inData) + { + sampleModel.setDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, inData, dataBuffer); + } + + public void setDataElements(int x, int y, Raster inRaster) + { + Object dataElements = getDataElements(0, 0, inRaster.getWidth(), + inRaster.getHeight(), null); + setDataElements(x, y, dataElements); + } + + public void setDataElements(int x, int y, int w, int h, Object inData) + { + sampleModel.setDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, inData, dataBuffer); + } + + /** + * + * @param srcRaster + */ + public void setRect(Raster srcRaster) + { + setRect(0, 0, srcRaster); + } + + /** + * + * @param dx + * @param dy + * @param srcRaster + */ + public void setRect(int dx, int dy, Raster srcRaster) + { + Rectangle targetUnclipped = new Rectangle(srcRaster.getMinX() + dx, + srcRaster.getMinY() + dy, srcRaster.getWidth(), srcRaster.getHeight()); + + Rectangle target = getBounds().intersection(targetUnclipped); + + if (target.isEmpty()) return; + + int sx = target.x - dx; + int sy = target.y - dy; + + // FIXME: Do tests on rasters and use get/set data instead. + + /* The JDK documentation seems to imply this implementation. + (the trucation of higher bits), but an implementation using + get/setDataElements would be more efficient. None of the + implementations would do anything sensible when the sample + models don't match. + + But this is probably not the place to consider such + optimizations.*/ + + int[] pixels = srcRaster.getPixels(sx, sy, target.width, target.height, + (int[]) null); + + setPixels(target.x, target.y, target.width, target.height, pixels); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, int[] iArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + iArray, dataBuffer); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param fArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, float[] fArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + fArray, dataBuffer); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param dArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, double[] dArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + dArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, int[] iArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, iArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param fArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, float[] fArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, fArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param dArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, double[] dArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, dArray, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, int s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, float s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, double s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + int[] iArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, iArray, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param fArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + float[] fArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, fArray, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param dArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + double[] dArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, dArray, dataBuffer); + } +} diff --git a/libjava/classpath/java/awt/image/WritableRenderedImage.java b/libjava/classpath/java/awt/image/WritableRenderedImage.java new file mode 100644 index 000000000..9142fe004 --- /dev/null +++ b/libjava/classpath/java/awt/image/WritableRenderedImage.java @@ -0,0 +1,56 @@ +/* WritableRenderedImage.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image; + +import java.awt.Point; + +/** + * NEEDS DOCUMENTATION + */ +public interface WritableRenderedImage extends RenderedImage +{ + void addTileObserver(TileObserver to); + void removeTileObserver(TileObserver to); + WritableRaster getWritableTile(int x, int y); + void releaseWritableTile(int x, int y); + boolean isTileWritable(int x, int y); + Point[] getWritableTileIndices(); + boolean hasTileWriters(); + void setData(Raster r); +} // interface WritableRenderedImage diff --git a/libjava/classpath/java/awt/image/package.html b/libjava/classpath/java/awt/image/package.html new file mode 100644 index 000000000..50fa99d13 --- /dev/null +++ b/libjava/classpath/java/awt/image/package.html @@ -0,0 +1,46 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> +<!-- package.html - describes classes in java.awt.image package. + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. --> + +<html> +<head><title>GNU Classpath - java.awt.image</title></head> + +<body> +<p>Image consumers, producers and filters.</p> + +</body> +</html> diff --git a/libjava/classpath/java/awt/image/renderable/ContextualRenderedImageFactory.java b/libjava/classpath/java/awt/image/renderable/ContextualRenderedImageFactory.java new file mode 100644 index 000000000..8852bef1c --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/ContextualRenderedImageFactory.java @@ -0,0 +1,56 @@ +/* ContextualRenderedImageFactory.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.geom.Rectangle2D; +import java.awt.image.RenderedImage; + +/** + * STUBBED + */ +public interface ContextualRenderedImageFactory extends RenderedImageFactory +{ + RenderContext mapRenderContext(int i, RenderContext context, + ParameterBlock block, RenderableImage image); + RenderedImage create(RenderContext context, ParameterBlock block); + Rectangle2D getBounds2D(ParameterBlock block); + Object getProperty(ParameterBlock block, String name); + String[] getPropertyNames(); + boolean isDynamic(); +} // interface ContextualRenderedImageFactory diff --git a/libjava/classpath/java/awt/image/renderable/ParameterBlock.java b/libjava/classpath/java/awt/image/renderable/ParameterBlock.java new file mode 100644 index 000000000..f38077816 --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/ParameterBlock.java @@ -0,0 +1,308 @@ +/* ParameterBlock.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.image.RenderedImage; +import java.io.Serializable; +import java.util.Vector; + +public class ParameterBlock implements Cloneable, Serializable +{ + private static final long serialVersionUID = -7577115551785240750L; + protected Vector<Object> sources; + protected Vector<Object> parameters; + + public ParameterBlock() + { + this(new Vector<Object>(), new Vector<Object>()); + } + + public ParameterBlock(Vector<Object> sources) + { + this(sources, new Vector<Object>()); + } + + public ParameterBlock(Vector<Object> sources, Vector<Object> parameters) + { + this.sources = sources; + this.parameters = parameters; + } + + public Object shallowClone() + { + try + { + return super.clone(); + } + catch (CloneNotSupportedException e) + { + throw (Error) new InternalError().initCause(e); // impossible + } + } + + public Object clone() + { + ParameterBlock pb = (ParameterBlock) shallowClone(); + if (sources != null) + pb.sources = (Vector<Object>) sources.clone(); + if (parameters != null) + pb.parameters = (Vector<Object>) parameters.clone(); + return pb; + } + + public ParameterBlock addSource(Object source) + { + sources.add(source); + return this; + } + + public Object getSource(int index) + { + return sources.get(index); + } + + public ParameterBlock setSource(Object source, int index) + { + sources.ensureCapacity(index); + sources.set(index, source); + return this; + } + + public RenderedImage getRenderedSource(int index) + { + return (RenderedImage) sources.get(index); + } + + public RenderableImage getRenderableSource(int index) + { + return (RenderableImage) sources.get(index); + } + + public int getNumSources() + { + return sources.size(); + } + + public Vector<Object> getSources() + { + return sources; + } + + public void setSources(Vector<Object> sources) + { + this.sources = sources; + } + + public void removeSources() + { + if (sources != null) + sources.clear(); + } + + public int getNumParameters() + { + return parameters.size(); + } + + public Vector<Object> getParameters() + { + return parameters; + } + + public void setParameters(Vector<Object> parameters) + { + this.parameters = parameters; + } + + public void removeParameters() + { + if (parameters != null) + parameters.clear(); + } + + public ParameterBlock add(Object o) + { + parameters.add(o); + return this; + } + + public ParameterBlock add(byte b) + { + return add(new Byte(b)); + } + + public ParameterBlock add(char c) + { + return add(new Character(c)); + } + + public ParameterBlock add(short s) + { + return add(new Short(s)); + } + + public ParameterBlock add(int i) + { + return add(new Integer(i)); + } + + public ParameterBlock add(long l) + { + return add(new Long(l)); + } + + public ParameterBlock add(float f) + { + return add(new Float(f)); + } + + public ParameterBlock add(double d) + { + return add(new Double(d)); + } + + public ParameterBlock set(Object o, int index) + { + parameters.ensureCapacity(index); + parameters.set(index, o); + return this; + } + + public ParameterBlock set(byte b, int index) + { + return set(new Byte(b), index); + } + + public ParameterBlock set(char c, int index) + { + return set(new Character(c), index); + } + + public ParameterBlock set(short s, int index) + { + return set(new Short(s), index); + } + + public ParameterBlock set(int i, int index) + { + return set(new Integer(i), index); + } + + public ParameterBlock set(long l, int index) + { + return set(new Long(l), index); + } + + public ParameterBlock set(float f, int index) + { + return set(new Float(f), index); + } + + public ParameterBlock set(double d, int index) + { + return set(new Double(d), index); + } + + public Object getObjectParameter(int index) + { + return parameters.get(index); + } + + public byte getByteParameter(int index) + { + return ((Byte) parameters.get(index)).byteValue(); + } + + public char getCharParameter(int index) + { + return ((Character) parameters.get(index)).charValue(); + } + + public short getShortParameter(int index) + { + return ((Short) parameters.get(index)).shortValue(); + } + + public int getIntParameter(int index) + { + return ((Integer) parameters.get(index)).intValue(); + } + + public long getLongParameter(int index) + { + return ((Long) parameters.get(index)).longValue(); + } + + public float getFloatParameter(int index) + { + return ((Float) parameters.get(index)).floatValue(); + } + + public double getDoubleParameter(int index) + { + return ((Double) parameters.get(index)).doubleValue(); + } + + public Class[] getParamClasses() + { + int i = parameters.size(); + Class[] result = new Class[i]; + while (--i >= 0) + { + Class c = parameters.get(i).getClass(); + if (c == Byte.class) + result[i] = byte.class; + else if (c == Character.class) + result[i] = char.class; + else if (c == Short.class) + result[i] = short.class; + else if (c == Integer.class) + result[i] = int.class; + else if (c == Long.class) + result[i] = long.class; + else if (c == Float.class) + result[i] = float.class; + else if (c == Double.class) + result[i] = double.class; + else + result[i] = c; + } + return result; + } +} // class ParameterBlock diff --git a/libjava/classpath/java/awt/image/renderable/RenderContext.java b/libjava/classpath/java/awt/image/renderable/RenderContext.java new file mode 100644 index 000000000..8017c1acf --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/RenderContext.java @@ -0,0 +1,141 @@ +/* RenderContext.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.RenderingHints; +import java.awt.Shape; +import java.awt.geom.AffineTransform; + +public class RenderContext implements Cloneable +{ + private AffineTransform xform; + private Shape aoi; + private RenderingHints hints; + + public RenderContext(AffineTransform xform, Shape aoi, RenderingHints hints) + { + this.xform = xform; + this.aoi = aoi; + this.hints = hints; + } + + public RenderContext(AffineTransform xform) + { + this(xform, null, null); + } + + public RenderContext(AffineTransform xform, RenderingHints hints) + { + this(xform, null, hints); + } + + public RenderContext(AffineTransform xform, Shape aoi) + { + this(xform, aoi, null); + } + + public RenderingHints getRenderingHints() + { + return hints; + } + + public void setRenderingHints(RenderingHints hints) + { + this.hints = hints; + } + + public void setTransform(AffineTransform xform) + { + this.xform = xform; + } + + public void preConcatenateTransform(AffineTransform pre) + { + preConcetenateTransform (pre); + } + + /** @deprecated */ + public void preConcetenateTransform(AffineTransform pre) + { + xform.preConcatenate (pre); + } + + public void concatenateTransform(AffineTransform post) + { + concetenateTransform (post); + } + + /** @deprecated */ + public void concetenateTransform(AffineTransform post) + { + xform.concatenate (post); + } + + public AffineTransform getTransform() + { + return xform; + } + + public void setAreaOfInterest(Shape aoi) + { + this.aoi = aoi; + } + + public Shape getAreaOfInterest() + { + return aoi; + } + + public Object clone() + { + try + { + RenderContext copy = (RenderContext) super.clone(); + if (xform != null) + copy.xform = (AffineTransform) xform.clone(); + if (hints != null) + copy.hints = (RenderingHints) hints.clone(); + return copy; + } + catch (CloneNotSupportedException e) + { + throw (Error) new InternalError().initCause(e); // impossible + } + } +} // class RenderContext diff --git a/libjava/classpath/java/awt/image/renderable/RenderableImage.java b/libjava/classpath/java/awt/image/renderable/RenderableImage.java new file mode 100644 index 000000000..31767af2c --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/RenderableImage.java @@ -0,0 +1,61 @@ +/* RenderableImage.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.RenderingHints; +import java.awt.image.RenderedImage; +import java.util.Vector; + +public interface RenderableImage +{ + String HINTS_OBSERVED = "HINTS_OBSERVED"; + + Vector<RenderableImage> getSources(); + Object getProperty(String name); + String[] getPropertyNames(); + boolean isDynamic(); + float getWidth(); + float getHeight(); + float getMinX(); + float getMinY(); + RenderedImage createScaledRendering(int w, int h, RenderingHints hints); + RenderedImage createDefaultRendering(); + RenderedImage createRendering(RenderContext context); + +} // interface RenderableImage diff --git a/libjava/classpath/java/awt/image/renderable/RenderableImageOp.java b/libjava/classpath/java/awt/image/renderable/RenderableImageOp.java new file mode 100644 index 000000000..81e537cd5 --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/RenderableImageOp.java @@ -0,0 +1,157 @@ +/* RenderableImageOp.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.RenderingHints; +import java.awt.geom.AffineTransform; +import java.awt.image.RenderedImage; +import java.util.Vector; + +public class RenderableImageOp implements RenderableImage +{ + private final ContextualRenderedImageFactory crif; + private ParameterBlock block; + + public RenderableImageOp(ContextualRenderedImageFactory crif, + ParameterBlock block) + { + this.crif = crif; + this.block = (ParameterBlock) block.clone(); + } + + public Vector<RenderableImage> getSources() + { + if (block.sources == null) + return null; + int size = block.sources.size(); + Vector v = new Vector(); + for (int i = 0; i < size; i++) + { + Object o = block.sources.get(i); + if (o instanceof RenderableImage) + v.add(o); + } + return v; + } + + public Object getProperty(String name) + { + return crif.getProperty(block, name); + } + + public String[] getPropertyNames() + { + return crif.getPropertyNames(); + } + + public boolean isDynamic() + { + return crif.isDynamic(); + } + + public float getWidth() + { + return (float) crif.getBounds2D(block).getWidth(); + } + + public float getHeight() + { + return (float) crif.getBounds2D(block).getHeight(); + } + + public float getMinX() + { + return (float) crif.getBounds2D(block).getX(); + } + + public float getMinY() + { + return (float) crif.getBounds2D(block).getY(); + } + + public ParameterBlock setParameterBlock(ParameterBlock block) + { + ParameterBlock result = this.block; + this.block = (ParameterBlock) block.clone(); + return result; + } + + public ParameterBlock getParameterBlock() + { + return block; + } + + public RenderedImage createScaledRendering(int w, int h, + RenderingHints hints) + { + if (w == 0) + if (h == 0) + throw new IllegalArgumentException(); + else + w = Math.round(h * getWidth() / getHeight()); + if (h == 0) + h = Math.round(w * getHeight() / getWidth()); + AffineTransform xform = AffineTransform.getScaleInstance(w * getWidth(), + h * getHeight()); + return createRendering(new RenderContext(xform, hints)); + } + + public RenderedImage createDefaultRendering() + { + return createRendering(new RenderContext(new AffineTransform())); + } + + public RenderedImage createRendering(RenderContext context) + { + ParameterBlock copy = (ParameterBlock) block.clone(); + int i = block.sources.size(); + while (--i >= 0) + { + Object o = block.sources.get(i); + if (o instanceof RenderableImage) + { + RenderableImage ri = (RenderableImage) o; + RenderContext rc = crif.mapRenderContext(i, context, block, ri); + copy.sources.set(i, ri.createRendering(rc)); + } + } + // Now copy.sources should be only RenderedImages. + return crif.create(context, copy); + } +} // class RenderableImageOp diff --git a/libjava/classpath/java/awt/image/renderable/RenderableImageProducer.java b/libjava/classpath/java/awt/image/renderable/RenderableImageProducer.java new file mode 100644 index 000000000..bd3b507cb --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/RenderableImageProducer.java @@ -0,0 +1,166 @@ +/* RenderableImageProducer.java -- + Copyright (C) 2002, 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.image.ColorModel; +import java.awt.image.DataBuffer; +import java.awt.image.ImageConsumer; +import java.awt.image.ImageProducer; +import java.awt.image.Raster; +import java.awt.image.RenderedImage; +import java.awt.image.SampleModel; +import java.util.ArrayList; +import java.util.Iterator; + +public class RenderableImageProducer implements ImageProducer, Runnable +{ + private RenderableImage image; + private RenderContext context; + private ArrayList consumers = new ArrayList(); + + public RenderableImageProducer(RenderableImage image, RenderContext context) + { + this.image = image; + this.context = context; + } + + public void setRenderContext(RenderContext context) + { + this.context = context; + } + + public void addConsumer(ImageConsumer consumer) + { + synchronized (consumers) + { + if (! consumers.contains(consumer)) + consumers.add(consumer); + } + } + + public boolean isConsumer(ImageConsumer consumer) + { + synchronized (consumers) + { + return consumers.contains(consumer); + } + } + + public void removeConsumer(ImageConsumer consumer) + { + synchronized (consumers) + { + consumers.remove(consumer); + } + } + + public void startProduction(ImageConsumer consumer) + { + addConsumer(consumer); + Thread t = new Thread(this, "RenderableImageProducerWorker"); + t.start(); + } + + public void requestTopDownLeftRightResend(ImageConsumer consumer) + { + // Do nothing. The contract says we can ignore this call, so we do. + } + + public void run() + { + // This isn't ideal but it avoids fail-fast problems. + // Alternatively, we could clone 'consumers' here. + synchronized (consumers) + { + RenderedImage newImage; + if (context == null) + newImage = image.createDefaultRendering(); + else + newImage = image.createRendering(context); + Raster newData = newImage.getData(); + ColorModel colorModel = newImage.getColorModel(); + if (colorModel == null) + colorModel = ColorModel.getRGBdefault(); + SampleModel sampleModel = newData.getSampleModel(); + DataBuffer dataBuffer = newData.getDataBuffer(); + int width = newData.getWidth(); + int height = newData.getHeight(); + + // Initialize the consumers. + Iterator it = consumers.iterator(); + while (it.hasNext()) + { + ImageConsumer target = (ImageConsumer) it.next(); + target.setHints(ImageConsumer.COMPLETESCANLINES + | ImageConsumer.SINGLEFRAME + | ImageConsumer.SINGLEPASS + | ImageConsumer.TOPDOWNLEFTRIGHT); + target.setDimensions(width, height); + } + + // Work in scan-line order. + int[] newLine = new int[width]; + int[] bands = new int[sampleModel.getNumBands()]; + for (int y = 0; y < height; ++y) + { + for (int x = 0; x < width; ++x) + { + sampleModel.getPixel(x, y, bands, dataBuffer); + newLine[x] = colorModel.getDataElement(bands, 0); + } + + // Tell the consumers about the new scan line. + it = consumers.iterator(); + while (it.hasNext()) + { + ImageConsumer target = (ImageConsumer) it.next(); + target.setPixels(0, y, width, 1, colorModel, newLine, 0, width); + } + } + + // Tell the consumers that we're done. + it = consumers.iterator(); + while (it.hasNext()) + { + ImageConsumer target = (ImageConsumer) it.next(); + target.imageComplete(ImageConsumer.STATICIMAGEDONE); + } + } + } +} // class RenderableImageProducer diff --git a/libjava/classpath/java/awt/image/renderable/RenderedImageFactory.java b/libjava/classpath/java/awt/image/renderable/RenderedImageFactory.java new file mode 100644 index 000000000..ea2bd69f7 --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/RenderedImageFactory.java @@ -0,0 +1,47 @@ +/* RenderedImageFactory.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.image.renderable; + +import java.awt.RenderingHints; +import java.awt.image.RenderedImage; + +public interface RenderedImageFactory +{ + RenderedImage create(ParameterBlock block, RenderingHints hints); +} // interface RenderedImageFactory diff --git a/libjava/classpath/java/awt/image/renderable/package.html b/libjava/classpath/java/awt/image/renderable/package.html new file mode 100644 index 000000000..a24237e72 --- /dev/null +++ b/libjava/classpath/java/awt/image/renderable/package.html @@ -0,0 +1,46 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> +<!-- package.html - describes classes in java.awt.image.renderable package. + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. --> + +<html> +<head><title>GNU Classpath - java.awt.image.renderable</title></head> + +<body> +<p></p> + +</body> +</html> |