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/*
* Copyright 2009 Phil Burk, Mobileer Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jsyn.engine;
import junit.framework.TestCase;
import com.jsyn.io.AudioFifo;
public class TestFifo extends TestCase {
public void testBasic() {
Thread watchdog = startWatchdog(600);
AudioFifo fifo = new AudioFifo();
fifo.setReadWaitEnabled(false);
fifo.allocate(8);
assertEquals("start empty", 0, fifo.available());
assertEquals("read back Nan when emopty", Double.NaN, fifo.read());
fifo.write(1.0);
assertEquals("added one value", 1, fifo.available());
assertEquals("read back same value", 1.0, fifo.read());
assertEquals("back to empty", 0, fifo.available());
for (int i = 0; i < fifo.size(); i++) {
assertEquals("adding data", i, fifo.available());
fifo.write(100.0 + i);
}
for (int i = 0; i < fifo.size(); i++) {
assertEquals("removing data", fifo.size() - i, fifo.available());
assertEquals("reading back data", 100.0 + i, fifo.read());
}
watchdog.interrupt();
}
/**
* Wrap around several times to test masking.
*/
public void testWrapping() {
final int chunk = 5;
AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
double value = 1000.0;
for (int i = 0; i < (fifo.size() * chunk); i++) {
value = checkFifoChunk(fifo, value, chunk);
}
}
private double checkFifoChunk(AudioFifo fifo, double value, int chunk) {
for (int i = 0; i < chunk; i++) {
assertEquals("adding data", i, fifo.available());
fifo.write(value + i);
}
for (int i = 0; i < chunk; i++) {
assertEquals("removing data", chunk - i, fifo.available());
assertEquals("reading back data", value + i, fifo.read());
}
return value + chunk;
}
public void testBadSize() {
boolean caught = false;
try {
AudioFifo fifo = new AudioFifo();
fifo.allocate(20); // not power of 2
assertTrue("should not get here", false);
} catch (IllegalArgumentException e) {
caught = true;
}
assertTrue("should have caught size exception", caught);
}
public void testSingleReadWait() {
final int chunk = 5;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(false);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed write in another thread.
new Thread() {
@Override
public void run() {
try {
sleep(200);
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
Thread watchdog = startWatchdog(500);
for (int i = 0; i < chunk; i++) {
assertEquals("reading back data", value + i, fifo.read());
}
watchdog.interrupt();
}
private Thread startWatchdog(final int msec) {
Thread watchdog = new Thread() {
@Override
public void run() {
try {
sleep(msec);
assertTrue("test must still be waiting", false);
} catch (InterruptedException e) {
}
}
};
watchdog.start();
return watchdog;
}
public void testSingleWriteWait() {
final int chunk = 13;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(true);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed read in another thread.
Thread readThread = new Thread() {
@Override
public void run() {
try {
sleep(200);
for (int i = 0; i < chunk; i++) {
// System.out.println( "testSingleWriteWait: try to read" );
double got = fifo.read();
assertEquals("adding data", value + i, got);
// System.out.println( "testSingleWriteWait: read " + got );
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
readThread.start();
Thread watchdog = startWatchdog(500);
// Try to write more than will fit so we will hang.
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
watchdog.interrupt();
try {
readThread.join(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
assertEquals("readThread should be done.", false, readThread.isAlive());
}
public void testBlockReadWait() {
final int chunk = 50;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(false);
fifo.setReadWaitEnabled(true);
final double value = 300.0;
double[] readBuffer = new double[chunk];
// Schedule delayed writes in another thread.
new Thread() {
@Override
public void run() {
int numWritten = 0;
double[] writeBuffer = new double[4];
try {
while (numWritten < chunk) {
sleep(30);
for (int i = 0; i < writeBuffer.length; i++) {
writeBuffer[i] = value + numWritten;
numWritten += 1;
}
fifo.write(writeBuffer);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
Thread watchdog = startWatchdog(600);
fifo.read(readBuffer);
for (int i = 0; i < chunk; i++) {
assertEquals("reading back data", value + i, readBuffer[i]);
}
watchdog.interrupt();
}
public void testBlockReadAndWriteWaitStress() {
final int chunk = 10000000; // 10 Megabytes
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(true);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed write in another thread.
new Thread() {
@Override
public void run() {
try {
sleep(200);
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
Thread watchdog = startWatchdog(10000);
for (int i = 0; i < chunk; i++) {
assertEquals("reading back data", value + i, fifo.read());
}
watchdog.interrupt();
}
}
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