| /* |
| * Copyright (c) 2010, 2013, 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. |
| * |
| * 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 6938426 |
| * @bug 7058852 |
| * @summary Tests that Alaw encoder works properly in multithreaded environment |
| * @author Alex Menkov |
| */ |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import javax.sound.sampled.AudioFormat; |
| import javax.sound.sampled.AudioInputStream; |
| import javax.sound.sampled.AudioSystem; |
| |
| public class AlawEncoderSync { |
| |
| static final int THREAD_COUNT = 20; |
| |
| static final AudioFormat pcmFormat = new AudioFormat(8000f, 16, 2, true, false); |
| static final int STREAM_LENGTH = 10; // in seconds |
| static byte[] pcmBuffer; |
| static final AudioFormat alawFormat |
| = new AudioFormat(AudioFormat.Encoding.ALAW, 8000f, 8, 2, 2, 8000f, false); |
| |
| static final ConversionThread[] threads = new ConversionThread[THREAD_COUNT]; |
| |
| public static void main(String[] args) { |
| preparePCMBuffer(); |
| log("pcmStream size: " + pcmBuffer.length); |
| |
| for (int i=0; i<THREAD_COUNT; i++) { |
| threads[i] = new ConversionThread(i); |
| threads[i].start(); |
| } |
| |
| for (int i=0; i<THREAD_COUNT; i++) { |
| try { |
| threads[i].join(); |
| } catch (InterruptedException ex) { |
| log("Main thread was interrupted, exiting."); |
| return; |
| } |
| } |
| |
| int failed = 0; |
| log("comparing result arrays..."); |
| for (int i=1; i<THREAD_COUNT; i++) { |
| if (!Arrays.equals(threads[0].resultArray, threads[i].resultArray)) { |
| failed++; |
| log("NOT equals: 0 and " + i); |
| } |
| } |
| if (failed > 0) { |
| throw new RuntimeException("test FAILED"); |
| } |
| log("test PASSED."); |
| } |
| |
| |
| static void preparePCMBuffer() { |
| pcmBuffer = new byte[STREAM_LENGTH * (int)pcmFormat.getSampleRate() |
| * (pcmFormat.getSampleSizeInBits() / 8) * pcmFormat.getChannels()]; |
| for (int i=0; i<pcmBuffer.length; i++) { |
| pcmBuffer[i] = (byte)(Math.random() * 256.0 - 128.0); |
| } |
| } |
| |
| static AudioInputStream createPCMStream() { |
| InputStream byteStream = new ByteArrayInputStream(pcmBuffer); |
| return new AudioInputStream(byteStream, pcmFormat, AudioSystem.NOT_SPECIFIED); |
| } |
| |
| static class ConversionThread extends Thread { |
| public final int num; |
| public byte[] resultArray = null; |
| public ConversionThread(int num) { |
| this.num = num; |
| } |
| @Override |
| public void run() { |
| log("ConversionThread[" + num + "] started."); |
| try { |
| InputStream inStream = new ByteArrayInputStream(pcmBuffer); |
| |
| AudioInputStream pcmStream = new AudioInputStream( |
| inStream, pcmFormat, AudioSystem.NOT_SPECIFIED); |
| AudioInputStream alawStream = AudioSystem.getAudioInputStream(alawFormat, pcmStream); |
| |
| ByteArrayOutputStream outStream = new ByteArrayOutputStream(); |
| int read = 0; |
| byte[] data = new byte[4096]; |
| while((read = alawStream.read(data)) != -1) { |
| outStream.write(data, 0, read); |
| } |
| alawStream.close(); |
| resultArray = outStream.toByteArray(); |
| } catch (Exception ex) { |
| log("ConversionThread[" + num + "] exception:"); |
| log(ex); |
| } |
| log("ConversionThread[" + num + "] completed."); |
| } |
| } |
| |
| static void log(String s) { |
| System.out.println(s); |
| } |
| |
| static void log(Exception ex) { |
| ex.printStackTrace(System.out); |
| } |
| } |