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/*
* 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);
}
}
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