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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 com.jsyn.unitgen.Add;
import com.jsyn.unitgen.LineOut;
import com.jsyn.unitgen.PitchDetector;
import com.jsyn.unitgen.SineOscillator;
import com.jsyn.unitgen.ZeroCrossingCounter;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class TestEngine {
@Test
public void testInitialization() {
final int DEFAULT_FRAME_RATE = 44100;
SynthesisEngine synthesisEngine = new SynthesisEngine();
assertEquals(0, synthesisEngine.getFrameCount(), "frameCount zero before starting");
assertEquals(DEFAULT_FRAME_RATE, synthesisEngine.getFrameRate(), "default frameRate");
assertTrue(synthesisEngine.isPullDataEnabled(), "default pullData");
}
public void checkPullData(boolean pullData) {
SynthesisEngine synthesisEngine = new SynthesisEngine();
assertTrue(synthesisEngine.isRealTime(), "default realTime");
synthesisEngine.setRealTime(false);
assertTrue(synthesisEngine.isPullDataEnabled(), "default pullData");
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(0.0, sineOscillator.output.getValue(), "initial sine value");
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(value > 0.0, "sine value after generation = " + value);
}
@Test
public void testPullDataFalse() {
checkPullData(false);
}
@Test
public void testPullDataTrue() {
checkPullData(true);
}
@Test
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(e.getMessage().contains("different synths"), "informative MPE message");
}
assertTrue(gotCaught, "caught NPE caused by forgetting synth.add");
}
@Test
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(0.0, sineOscillator.output.getValue(), "initial sine value");
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(e.getMessage().contains("forgot to add"), "informative MPE message");
}
assertTrue(gotCaught, "caught NPE caused by forgetting synth.add");
}
@Test
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(0, counter.getCount(), "initial count");
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(oscFreq, frequencyMeasured, oscFreq * 0.1, msg);
assertEquals(0.9, confidenceMeasured, 0.1, "pitch confidence");
double expectedCount = interval * oscFreq;
double framesMeasured = counter.getCount() - previousFrameCount;
msg = "count at " + rate + " Hz";
System.out.println(msg);
assertEquals(expectedCount, framesMeasured, expectedCount * 0.1, msg);
synth.stop();
}
}
@Test
public void testScheduler() throws InterruptedException {
SynthesisEngine synth = new SynthesisEngine();
synth.setRealTime(false);
Add adder = new Add();
synth.add(adder);
synth.start();
adder.start();
adder.inputA.set(4.0);
adder.inputB.set(10.0);
synth.sleepFor(0.1);
assertEquals(14.0, adder.output.get(), 0.01, "simple add");
// Schedule a set() in the near future.
double time = synth.getCurrentTime();
adder.inputA.set(7.0, time + 1.0);
synth.sleepFor(0.5);
assertEquals(14.0, adder.output.get(), 0.01, "before scheduled set");
synth.sleepFor(1.0);
assertEquals(17.0, adder.output.get(), 0.01, "after scheduled set");
// Schedule a set() in the near future then cancel it.
time = synth.getCurrentTime();
adder.inputA.set(5.0, time + 1.0);
synth.sleepFor(0.5);
assertEquals(17.0, adder.output.get(), 0.01, "before scheduled set");
synth.clearCommandQueue();
synth.sleepFor(1.0);
assertEquals(17.0, adder.output.get(), 0.01, "after canceled set");
synth.stop();
}
}
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