1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 import java.nio.BufferOverflowException; 18 import java.nio.ByteBuffer; 19 import java.nio.ByteOrder; 20 import java.nio.FloatBuffer; 21 import java.nio.IntBuffer; 22 import java.nio.ShortBuffer; 23 24 public class Main { main(String[] args)25 public static void main(String[] args) { 26 intFloatTest(); 27 basicShortTest(); 28 } 29 30 /* 31 * Create a buffer and fiddle with it. 32 */ basicShortTest()33 public static void basicShortTest() { 34 ByteBuffer directBuf = ByteBuffer.allocateDirect(64); 35 //ByteBuffer directBuf = ByteBuffer.allocateDirect(65); 36 37 ShortBuffer shortBuf = directBuf.asShortBuffer(); 38 39 short[] myShorts = { 40 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 41 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 42 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 43 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031 44 }; 45 46 shortBuf.position(0); 47 shortBuf.put(myShorts, 0, 32); // should work 48 shortBuf.position(0); 49 shortBuf.put(myShorts, 16, 16); // should work 50 shortBuf.put(myShorts, 16, 16); // advance to end 51 52 try { 53 shortBuf.put(myShorts, 0, 1); // should fail 54 System.err.println("ERROR: out-of-bounds put succeeded\n"); 55 } catch (BufferOverflowException boe) { 56 System.out.println("Got expected buffer overflow exception"); 57 } 58 59 try { 60 shortBuf.position(0); 61 shortBuf.put(myShorts, 0, 33); // should fail 62 System.err.println("ERROR: out-of-bounds put succeeded\n"); 63 } catch (IndexOutOfBoundsException ioobe) { 64 System.out.println("Got expected out-of-bounds exception"); 65 } 66 67 try { 68 shortBuf.position(16); 69 shortBuf.put(myShorts, 0, 17); // should fail 70 System.err.println("ERROR: out-of-bounds put succeeded\n"); 71 } catch (BufferOverflowException boe) { 72 System.out.println("Got expected buffer overflow exception"); 73 } 74 } 75 76 /* 77 * Try this with either floats or ints; ints fail with 78 * BufferOverflowException, floats work. 79 * 80 * From http://code.google.com/p/android/issues/detail?id=1585 . 81 */ intFloatTest()82 public static void intFloatTest() { 83 ByteBuffer direct = ByteBuffer.allocateDirect(100); 84 direct.order(ByteOrder.nativeOrder()); 85 IntBuffer int1 = direct.asIntBuffer(); 86 int data[] = new int[25]; 87 //FloatBuffer int1 = direct.asFloatBuffer(); 88 //float data[] = new float[25]; 89 int1.clear (); 90 int1.put (data); 91 int1.position (0); 92 93 int1.clear (); 94 int1.put (data); 95 int1.position (0); 96 } 97 } 98