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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.unitgen.LineOut;
import com.jsyn.unitgen.PitchDetector;
import com.jsyn.unitgen.SineOscillator;
import com.jsyn.unitgen.ZeroCrossingCounter;
public class TestEngine extends TestCase {
public void testInitialization() {
final int DEFAULT_FRAME_RATE = 44100;
SynthesisEngine synthesisEngine = new SynthesisEngine();
assertEquals("frameCount zero before starting", 0, synthesisEngine.getFrameCount());
assertEquals("default frameRate", DEFAULT_FRAME_RATE, synthesisEngine.getFrameRate());
assertEquals("default pullData", true, synthesisEngine.isPullDataEnabled());
}
public void checkPullData(boolean pullData) {
SynthesisEngine synthesisEngine = new SynthesisEngine();
assertEquals("default realTime", true, synthesisEngine.isRealTime());
synthesisEngine.setRealTime(false);
assertEquals("default pullData", true, synthesisEngine.isPullDataEnabled());
synthesisEngine.setPullDataEnabled(pullData);
SineOscillator sineOscillator = new SineOscillator();
synthesisEngine.add(sineOscillator);
LineOut lineOut = new LineOut();
synthesisEngine.add(lineOut);
sineOscillator.output.connect(0, lineOut.input, 0);
assertEquals("initial sine value", 0.0, sineOscillator.output.getValue());
synthesisEngine.start();
if (!pullData) {
sineOscillator.start();
}
// We always have to start the LineOut.
lineOut.start();
synthesisEngine.generateNextBuffer();
synthesisEngine.generateNextBuffer();
double value = sineOscillator.output.getValue();
assertTrue("sine value after generation = " + value, (value > 0.0));
}
public void testPullDataFalse() {
checkPullData(false);
}
public void testPullDataTrue() {
checkPullData(true);
}
public void testMixedAdding() {
boolean gotCaught = false;
SynthesisEngine synthesisEngine1 = new SynthesisEngine();
synthesisEngine1.setRealTime(false);
synthesisEngine1.setPullDataEnabled(true);
SynthesisEngine synthesisEngine2 = new SynthesisEngine();
synthesisEngine2.setRealTime(false);
synthesisEngine2.setPullDataEnabled(true);
// Create a sineOscillator but do not add it to the synth!
SineOscillator sineOscillator = new SineOscillator();
LineOut lineOut = new LineOut();
synthesisEngine1.add(lineOut);
synthesisEngine2.add(sineOscillator);
try {
sineOscillator.output.connect(0, lineOut.input, 0);
} catch (RuntimeException e) {
gotCaught = true;
assertTrue("informative MPE message", e.getMessage().contains("different synths"));
}
assertTrue("caught NPE caused by forgetting synth.add", gotCaught);
}
public void testNotAdding() {
SynthesisEngine synthesisEngine = new SynthesisEngine();
synthesisEngine.setRealTime(false);
synthesisEngine.setPullDataEnabled(true);
// Create a sineOscillator but do not add it to the synth!
SineOscillator sineOscillator = new SineOscillator();
LineOut lineOut = new LineOut();
sineOscillator.output.connect(0, lineOut.input, 0);
synthesisEngine.add(lineOut);
assertEquals("initial sine value", 0.0, sineOscillator.output.getValue());
synthesisEngine.start();
// We always have to start the LineOut.
lineOut.start();
boolean gotCaught = false;
try {
synthesisEngine.generateNextBuffer();
synthesisEngine.generateNextBuffer();
} catch (NullPointerException e) {
gotCaught = true;
assertTrue("informative MPE message", e.getMessage().contains("forgot to add"));
}
assertTrue("caught NPE caused by forgetting synth.add", gotCaught);
}
public void testMultipleStarts() throws InterruptedException {
SynthesisEngine synth = new SynthesisEngine();
// Create a sineOscillator but do not add it to the synth!
SineOscillator osc = new SineOscillator();
ZeroCrossingCounter counter = new ZeroCrossingCounter();
PitchDetector pitchDetector = new PitchDetector();
LineOut lineOut = new LineOut();
synth.add(osc);
synth.add(counter);
synth.add(lineOut);
synth.add(pitchDetector);
osc.output.connect(counter.input);
osc.output.connect(pitchDetector.input);
counter.output.connect(0, lineOut.input, 0);
assertEquals("initial count", 0, counter.getCount());
int[] rates = {
32000, 48000, 44100, 22050
};
for (int rate : rates) {
synth.start(rate);
lineOut.start();
pitchDetector.start();
double time = synth.getCurrentTime();
double interval = 1.0;
time += interval;
long previousFrameCount = counter.getCount();
synth.sleepUntil(time);
double frequencyMeasured = pitchDetector.frequency.get();
double confidenceMeasured = pitchDetector.confidence.get();
double oscFreq = osc.frequency.get();
String msg = "freq at " + rate + " Hz";
System.out.println(msg);
assertEquals(msg, oscFreq, frequencyMeasured, oscFreq * 0.1);
assertEquals("pitch confidence", 0.9, confidenceMeasured, 0.1);
double expectedCount = interval * oscFreq;
double framesMeasured = counter.getCount() - previousFrameCount;
msg = "count at " + rate + " Hz";
System.out.println(msg);
assertEquals(msg, expectedCount, framesMeasured, expectedCount * 0.1);
synth.stop();
}
}
}
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