1 /* 2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.java2d; 27 28 import java.awt.image.DataBuffer; 29 import java.nio.*; 30 31 public final class DataBufferNIOInt extends DataBuffer { 32 33 /** The default data bank. */ 34 IntBuffer data; 35 36 /** All data banks */ 37 IntBuffer[] bankdata; 38 39 /** 40 * Constructs an integer-based {@code DataBuffer} with a single bank 41 * and the specified size. 42 * 43 * @param size The size of the {@code DataBuffer}. 44 */ 45 public DataBufferNIOInt(int size) { 46 super(TYPE_INT,size); 47 //+++gdb how to get sizeof(int) in java? Using 4 for now. 48 data = getBufferOfSize(size * 4).asIntBuffer(); 49 bankdata = new IntBuffer[1]; 50 bankdata[0] = data; 51 } 52 53 /** 54 * Returns the default (first) IntBuffer in {@code DataBuffer}. 55 * 56 * @return The first IntBuffer. 57 */ 58 public IntBuffer getBuffer() { 59 return data; 60 } 61 62 /** 63 * Returns the Buffer for the specified bank. 64 * 65 * @param bank The bank whose Buffer you want to get. 66 * @return The Buffer for the specified bank. 67 */ 68 public IntBuffer getBuffer(int bank) { 69 return bankdata[bank]; 70 } 71 72 /** 73 * Returns the default (first) int data array in {@code DataBuffer}. 74 * 75 * @return The first integer data array. 76 */ 77 public int[] getData() { 78 return data.array(); 79 } 80 81 /** 82 * Returns the data array for the specified bank. 83 * 84 * @param bank The bank whose data array you want to get. 85 * @return The data array for the specified bank. 86 */ 87 public int[] getData(int bank) { 88 return bankdata[bank].array(); 89 } 90 91 /** 92 * Returns the data arrays for all banks. 93 * @return All of the data arrays. 94 */ 95 public int[][] getBankData() { 96 // Unsupported. 97 return null; 98 } 99 100 /** 101 * Returns the requested data array element from the first (default) bank. 102 * 103 * @param i The data array element you want to get. 104 * @return The requested data array element as an integer. 105 * @see #setElem(int, int) 106 * @see #setElem(int, int, int) 107 */ 108 public int getElem(int i) { 109 return data.get(i+offset); 110 } 111 112 /** 113 * Returns the requested data array element from the specified bank. 114 * 115 * @param bank The bank from which you want to get a data array element. 116 * @param i The data array element you want to get. 117 * @return The requested data array element as an integer. 118 * @see #setElem(int, int) 119 * @see #setElem(int, int, int) 120 */ 121 public int getElem(int bank, int i) { 122 return bankdata[bank].get(i+offsets[bank]); 123 } 124 125 /** 126 * Sets the requested data array element in the first (default) bank 127 * to the specified value. 128 * 129 * @param i The data array element you want to set. 130 * @param val The integer value to which you want to set the data array element. 131 * @see #getElem(int) 132 * @see #getElem(int, int) 133 */ 134 public void setElem(int i, int val) { 135 data.put(i+offset, val); 136 } 137 138 /** 139 * Sets the requested data array element in the specified bank 140 * to the integer value {@code i}. 141 * @param bank The bank in which you want to set the data array element. 142 * @param i The data array element you want to set. 143 * @param val The integer value to which you want to set the specified data array element. 144 * @see #getElem(int) 145 * @see #getElem(int, int) 146 */ 147 public void setElem(int bank, int i, int val) { 148 bankdata[bank].put(i+offsets[bank], val); 149 } 150 151 ByteBuffer getBufferOfSize(int size) 152 { 153 ByteBuffer buffer = ByteBuffer.allocateDirect(size); 154 buffer.order(ByteOrder.nativeOrder()); 155 return buffer; 156 } 157 }