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Diffstat (limited to 'libjava/classpath/java/awt/image/BandedSampleModel.java')
| -rw-r--r-- | libjava/classpath/java/awt/image/BandedSampleModel.java | 759 |
1 files changed, 0 insertions, 759 deletions
diff --git a/libjava/classpath/java/awt/image/BandedSampleModel.java b/libjava/classpath/java/awt/image/BandedSampleModel.java deleted file mode 100644 index 7df6c85..0000000 --- a/libjava/classpath/java/awt/image/BandedSampleModel.java +++ /dev/null @@ -1,759 +0,0 @@ -/* 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(); - } -} |