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| -rw-r--r-- | tests/com/jsyn/examples/PlaySampleWaveShaper.java | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/tests/com/jsyn/examples/PlaySampleWaveShaper.java b/tests/com/jsyn/examples/PlaySampleWaveShaper.java new file mode 100644 index 0000000..c282028 --- /dev/null +++ b/tests/com/jsyn/examples/PlaySampleWaveShaper.java @@ -0,0 +1,134 @@ +/* + * 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(); + } +} |