1 /* 2 * Copyright (c) 2010, 2012, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 6938426 27 * @bug 7058852 28 * @summary Tests that Alaw encoder works properly in multithreaded environment 29 * @author Alex Menkov 30 */ 31 32 import java.io.ByteArrayInputStream; 33 import java.io.ByteArrayOutputStream; 34 import java.io.InputStream; 35 import java.util.Arrays; 36 import javax.sound.sampled.AudioFormat; 37 import javax.sound.sampled.AudioInputStream; 38 import javax.sound.sampled.AudioSystem; 39 40 public class AlawEncoderSync { 41 42 static final int THREAD_COUNT = 20; 43 44 static final AudioFormat pcmFormat = new AudioFormat(8000f, 16, 2, true, false); 45 static final int STREAM_LENGTH = 10; // in seconds 46 static byte[] pcmBuffer; 47 static final AudioFormat alawFormat 48 = new AudioFormat(AudioFormat.Encoding.ALAW, 8000f, 8, 2, 2, 8000f, false); 49 50 static final ConversionThread[] threads = new ConversionThread[THREAD_COUNT]; 51 52 public static void main(String[] args) { 53 preparePCMBuffer(); 54 log("pcmStream size: " + pcmBuffer.length); 55 56 for (int i=0; i<THREAD_COUNT; i++) { 57 threads[i] = new ConversionThread(i); 58 threads[i].start(); 59 } 60 61 for (int i=0; i<THREAD_COUNT; i++) { 62 try { 63 threads[i].join(); 64 } catch (InterruptedException ex) { 65 log("Main thread was interrupted, exiting."); 66 return; 67 } 68 } 69 70 int failed = 0; 71 log("comparing result arrays..."); 72 for (int i=1; i<THREAD_COUNT; i++) { 73 if (!Arrays.equals(threads[0].resultArray, threads[i].resultArray)) { 74 failed++; 75 log("NOT equals: 0 and " + i); 76 } 77 } 78 if (failed > 0) { 79 throw new RuntimeException("test FAILED"); 80 } 81 log("test PASSED."); 82 } 83 84 85 static void preparePCMBuffer() { 86 pcmBuffer = new byte[STREAM_LENGTH * (int)pcmFormat.getSampleRate() 87 * (pcmFormat.getSampleSizeInBits() / 8) * pcmFormat.getChannels()]; 88 for (int i=0; i<pcmBuffer.length; i++) { 89 pcmBuffer[i] = (byte)(Math.random() * 256.0 - 128.0); 90 } 91 } 92 93 static AudioInputStream createPCMStream() { 94 InputStream byteStream = new ByteArrayInputStream(pcmBuffer); 95 return new AudioInputStream(byteStream, pcmFormat, AudioSystem.NOT_SPECIFIED); 96 } 97 98 static class ConversionThread extends Thread { 99 public final int num; 100 public byte[] resultArray = null; 101 public ConversionThread(int num) { 102 this.num = num; 103 } 104 @Override 105 public void run() { 106 log("ConversionThread[" + num + "] started."); 107 try { 108 InputStream inStream = new ByteArrayInputStream(pcmBuffer); 109 110 AudioInputStream pcmStream = new AudioInputStream( 111 inStream, pcmFormat, AudioSystem.NOT_SPECIFIED); 112 AudioInputStream alawStream = AudioSystem.getAudioInputStream(alawFormat, pcmStream); 113 114 ByteArrayOutputStream outStream = new ByteArrayOutputStream(); 115 int read = 0; 116 byte[] data = new byte[4096]; 117 while((read = alawStream.read(data)) != -1) { 118 outStream.write(data, 0, read); 119 } 120 alawStream.close(); 121 resultArray = outStream.toByteArray(); 122 } catch (Exception ex) { 123 log("ConversionThread[" + num + "] exception:"); 124 log(ex); 125 } 126 log("ConversionThread[" + num + "] completed."); 127 } 128 } 129 130 static void log(String s) { 131 System.out.println(s); 132 } 133 134 static void log(Exception ex) { 135 ex.printStackTrace(System.out); 136 } 137 }