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/*
* Copyright 2010 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.examples;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import com.jsyn.JSyn;
import com.jsyn.Synthesizer;
import com.jsyn.data.FloatSample;
import com.jsyn.data.Function;
import com.jsyn.unitgen.FunctionEvaluator;
import com.jsyn.unitgen.LineOut;
import com.jsyn.unitgen.SineOscillator;
import com.jsyn.util.SampleLoader;
/**
* Play a sample from a WAV file using JSyn.
*
* @author Phil Burk (C) 2010 Mobileer Inc
*/
public class PlaySampleWaveShaper {
private Synthesizer synth;
private LineOut lineOut;
static class FloatSampleTable implements Function {
private FloatSample mSample;
FloatSampleTable(FloatSample sample) {
mSample = sample;
}
@Override
public double evaluate(double input) {
// Input ranges from -1 to +1
// Map it to range of sample with guard point.
double normalizedInput = (input + 1.0) * 0.5;
// Clip so it does not go out of range of the sample.
if (normalizedInput < 0.0) normalizedInput = 0.0;
else if (normalizedInput > 1.0) normalizedInput = 1.0;
double fractionalIndex = (mSample.getNumFrames() - 1.01) * normalizedInput;
return mSample.interpolate(fractionalIndex);
}
}
private void test() {
URL sampleFile;
try {
sampleFile = new URL("http://www.softsynth.com/samples/Clarinet.wav");
// sampleFile = new URL("http://www.softsynth.com/samples/NotHereNow22K.wav");
} catch (MalformedURLException e2) {
e2.printStackTrace();
return;
}
synth = JSyn.createSynthesizer();
FloatSample sample;
try {
// Add an output mixer.
synth.add(lineOut = new LineOut());
// Load the sample and display its properties.
SampleLoader.setJavaSoundPreferred(false);
sample = SampleLoader.loadFloatSample(sampleFile);
System.out.println("Sample has: channels = " + sample.getChannelsPerFrame());
System.out.println(" frames = " + sample.getNumFrames());
System.out.println(" rate = " + sample.getFrameRate());
System.out.println(" loopStart = " + sample.getSustainBegin());
System.out.println(" loopEnd = " + sample.getSustainEnd());
if (sample.getChannelsPerFrame() != 1) {
throw new RuntimeException("Can only use mono samples.");
}
FloatSampleTable sampleTable = new FloatSampleTable(sample);
System.out.println("eval -1.1 = " + sampleTable.evaluate(-1.1));
System.out.println("eval -1.0 = " + sampleTable.evaluate(-1.0));
System.out.println("eval 0.3 = " + sampleTable.evaluate(0.3));
System.out.println("eval 1.0 = " + sampleTable.evaluate(1.0));
System.out.println("eval 1.1 = " + sampleTable.evaluate(1.1));
FunctionEvaluator shaper = new FunctionEvaluator();
shaper.function.set(sampleTable);
synth.add(shaper);
shaper.output.connect(0, lineOut.input, 0);
shaper.output.connect(0, lineOut.input, 1);
SineOscillator osc = new SineOscillator();
osc.frequency.set(0.2);
osc.output.connect(shaper.input);
synth.add(osc);
// Start synthesizer using default stereo output at 44100 Hz.
synth.start();
// We only need to start the LineOut. It will pull data from the
// sample player.
lineOut.start();
// Wait until the sample has finished playing.
synth.sleepFor(5.0);
} catch (IOException e1) {
e1.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
// Stop everything.
synth.stop();
}
public static void main(String[] args) {
new PlaySampleWaveShaper().test();
}
}
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