| /* |
| * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.awt.image; |
| |
| import static sun.java2d.StateTrackable.State.*; |
| |
| /** |
| * This class extends {@code DataBuffer} and stores data internally |
| * in {@code float} form. |
| * <p> |
| * <a id="optimizations"> |
| * Note that some implementations may function more efficiently |
| * if they can maintain control over how the data for an image is |
| * stored. |
| * For example, optimizations such as caching an image in video |
| * memory require that the implementation track all modifications |
| * to that data. |
| * Other implementations may operate better if they can store the |
| * data in locations other than a Java array. |
| * To maintain optimum compatibility with various optimizations |
| * it is best to avoid constructors and methods which expose the |
| * underlying storage as a Java array as noted below in the |
| * documentation for those methods. |
| * </a> |
| * |
| * @since 1.4 |
| */ |
| |
| public final class DataBufferFloat extends DataBuffer { |
| |
| /** The array of data banks. */ |
| float bankdata[][]; |
| |
| /** A reference to the default data bank. */ |
| float data[]; |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with a specified size. |
| * |
| * @param size The number of elements in the DataBuffer. |
| */ |
| public DataBufferFloat(int size) { |
| super(STABLE, TYPE_FLOAT, size); |
| data = new float[size]; |
| bankdata = new float[1][]; |
| bankdata[0] = data; |
| } |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with a specified number of banks, all of which are of a |
| * specified size. |
| * |
| * @param size The number of elements in each bank of the |
| * {@code DataBuffer}. |
| * @param numBanks The number of banks in the |
| * {@code DataBuffer}. |
| */ |
| public DataBufferFloat(int size, int numBanks) { |
| super(STABLE, TYPE_FLOAT, size, numBanks); |
| bankdata = new float[numBanks][]; |
| for (int i= 0; i < numBanks; i++) { |
| bankdata[i] = new float[size]; |
| } |
| data = bankdata[0]; |
| } |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with the specified data array. Only the first |
| * {@code size} elements are available for use by this |
| * {@code DataBuffer}. The array must be large enough to |
| * hold {@code size} elements. |
| * <p> |
| * Note that {@code DataBuffer} objects created by this constructor |
| * may be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @param dataArray An array of {@code float}s to be used as the |
| * first and only bank of this {@code DataBuffer}. |
| * @param size The number of elements of the array to be used. |
| */ |
| public DataBufferFloat(float dataArray[], int size) { |
| super(UNTRACKABLE, TYPE_FLOAT, size); |
| data = dataArray; |
| bankdata = new float[1][]; |
| bankdata[0] = data; |
| } |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with the specified data array. Only the elements between |
| * {@code offset} and {@code offset + size - 1} are |
| * available for use by this {@code DataBuffer}. The array |
| * must be large enough to hold {@code offset + size} |
| * elements. |
| * <p> |
| * Note that {@code DataBuffer} objects created by this constructor |
| * may be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @param dataArray An array of {@code float}s to be used as the |
| * first and only bank of this {@code DataBuffer}. |
| * @param size The number of elements of the array to be used. |
| * @param offset The offset of the first element of the array |
| * that will be used. |
| */ |
| public DataBufferFloat(float dataArray[], int size, int offset) { |
| super(UNTRACKABLE, TYPE_FLOAT, size, 1, offset); |
| data = dataArray; |
| bankdata = new float[1][]; |
| bankdata[0] = data; |
| } |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with the specified data arrays. Only the first |
| * {@code size} elements of each array are available for use |
| * by this {@code DataBuffer}. The number of banks will be |
| * equal to {@code dataArray.length}. |
| * <p> |
| * Note that {@code DataBuffer} objects created by this constructor |
| * may be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @param dataArray An array of arrays of {@code float}s to be |
| * used as the banks of this {@code DataBuffer}. |
| * @param size The number of elements of each array to be used. |
| */ |
| public DataBufferFloat(float dataArray[][], int size) { |
| super(UNTRACKABLE, TYPE_FLOAT, size, dataArray.length); |
| bankdata = dataArray.clone(); |
| data = bankdata[0]; |
| } |
| |
| /** |
| * Constructs a {@code float}-based {@code DataBuffer} |
| * with the specified data arrays, size, and per-bank offsets. |
| * The number of banks is equal to {@code dataArray.length}. |
| * Each array must be at least as large as {@code size} plus the |
| * corresponding offset. There must be an entry in the offsets |
| * array for each data array. |
| * <p> |
| * Note that {@code DataBuffer} objects created by this constructor |
| * may be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @param dataArray An array of arrays of {@code float}s to be |
| * used as the banks of this {@code DataBuffer}. |
| * @param size The number of elements of each array to be used. |
| * @param offsets An array of integer offsets, one for each bank. |
| */ |
| public DataBufferFloat(float dataArray[][], int size, int offsets[]) { |
| super(UNTRACKABLE, TYPE_FLOAT, size,dataArray.length, offsets); |
| bankdata = dataArray.clone(); |
| data = bankdata[0]; |
| } |
| |
| /** |
| * Returns the default (first) {@code float} data array. |
| * <p> |
| * Note that calling this method may cause this {@code DataBuffer} |
| * object to be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @return the first float data array. |
| */ |
| public float[] getData() { |
| theTrackable.setUntrackable(); |
| return data; |
| } |
| |
| /** |
| * Returns the data array for the specified bank. |
| * <p> |
| * Note that calling this method may cause this {@code DataBuffer} |
| * object to be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @param bank the data array |
| * @return the data array specified by {@code bank}. |
| */ |
| public float[] getData(int bank) { |
| theTrackable.setUntrackable(); |
| return bankdata[bank]; |
| } |
| |
| /** |
| * Returns the data array for all banks. |
| * <p> |
| * Note that calling this method may cause this {@code DataBuffer} |
| * object to be incompatible with <a href="#optimizations">performance |
| * optimizations</a> used by some implementations (such as caching |
| * an associated image in video memory). |
| * |
| * @return all data arrays for this data buffer. |
| */ |
| public float[][] getBankData() { |
| theTrackable.setUntrackable(); |
| return bankdata.clone(); |
| } |
| |
| /** |
| * Returns the requested data array element from the first |
| * (default) bank as an {@code int}. |
| * |
| * @param i The desired data array element. |
| * |
| * @return The data entry as an {@code int}. |
| * @see #setElem(int, int) |
| * @see #setElem(int, int, int) |
| */ |
| public int getElem(int i) { |
| return (int)(data[i+offset]); |
| } |
| |
| /** |
| * Returns the requested data array element from the specified |
| * bank as an {@code int}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * |
| * @return The data entry as an {@code int}. |
| * @see #setElem(int, int) |
| * @see #setElem(int, int, int) |
| */ |
| public int getElem(int bank, int i) { |
| return (int)(bankdata[bank][i+offsets[bank]]); |
| } |
| |
| /** |
| * Sets the requested data array element in the first (default) |
| * bank to the given {@code int}. |
| * |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElem(int) |
| * @see #getElem(int, int) |
| */ |
| public void setElem(int i, int val) { |
| data[i+offset] = (float)val; |
| theTrackable.markDirty(); |
| } |
| |
| /** |
| * Sets the requested data array element in the specified bank to |
| * the given {@code int}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElem(int) |
| * @see #getElem(int, int) |
| */ |
| public void setElem(int bank, int i, int val) { |
| bankdata[bank][i+offsets[bank]] = (float)val; |
| theTrackable.markDirty(); |
| } |
| |
| /** |
| * Returns the requested data array element from the first |
| * (default) bank as a {@code float}. |
| * |
| * @param i The desired data array element. |
| * |
| * @return The data entry as a {@code float}. |
| * @see #setElemFloat(int, float) |
| * @see #setElemFloat(int, int, float) |
| */ |
| public float getElemFloat(int i) { |
| return data[i+offset]; |
| } |
| |
| /** |
| * Returns the requested data array element from the specified |
| * bank as a {@code float}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * |
| * @return The data entry as a {@code float}. |
| * @see #setElemFloat(int, float) |
| * @see #setElemFloat(int, int, float) |
| */ |
| public float getElemFloat(int bank, int i) { |
| return bankdata[bank][i+offsets[bank]]; |
| } |
| |
| /** |
| * Sets the requested data array element in the first (default) |
| * bank to the given {@code float}. |
| * |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElemFloat(int) |
| * @see #getElemFloat(int, int) |
| */ |
| public void setElemFloat(int i, float val) { |
| data[i+offset] = val; |
| theTrackable.markDirty(); |
| } |
| |
| /** |
| * Sets the requested data array element in the specified bank to |
| * the given {@code float}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElemFloat(int) |
| * @see #getElemFloat(int, int) |
| */ |
| public void setElemFloat(int bank, int i, float val) { |
| bankdata[bank][i+offsets[bank]] = val; |
| theTrackable.markDirty(); |
| } |
| |
| /** |
| * Returns the requested data array element from the first |
| * (default) bank as a {@code double}. |
| * |
| * @param i The desired data array element. |
| * |
| * @return The data entry as a {@code double}. |
| * @see #setElemDouble(int, double) |
| * @see #setElemDouble(int, int, double) |
| */ |
| public double getElemDouble(int i) { |
| return (double)data[i+offset]; |
| } |
| |
| /** |
| * Returns the requested data array element from the specified |
| * bank as a {@code double}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * |
| * @return The data entry as a {@code double}. |
| * @see #setElemDouble(int, double) |
| * @see #setElemDouble(int, int, double) |
| */ |
| public double getElemDouble(int bank, int i) { |
| return (double)bankdata[bank][i+offsets[bank]]; |
| } |
| |
| /** |
| * Sets the requested data array element in the first (default) |
| * bank to the given {@code double}. |
| * |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElemDouble(int) |
| * @see #getElemDouble(int, int) |
| */ |
| public void setElemDouble(int i, double val) { |
| data[i+offset] = (float)val; |
| theTrackable.markDirty(); |
| } |
| |
| /** |
| * Sets the requested data array element in the specified bank to |
| * the given {@code double}. |
| * |
| * @param bank The bank number. |
| * @param i The desired data array element. |
| * @param val The value to be set. |
| * @see #getElemDouble(int) |
| * @see #getElemDouble(int, int) |
| */ |
| public void setElemDouble(int bank, int i, double val) { |
| bankdata[bank][i+offsets[bank]] = (float)val; |
| theTrackable.markDirty(); |
| } |
| } |
