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authorPhil Burk <[email protected]>2016-10-26 18:57:29 -0700
committerPhil Burk <[email protected]>2016-11-30 22:13:44 -0800
commit9fc77bbf87bea398dedfa76e2ab71933169ef5ad (patch)
treeaf7809d3dc63de19cd7fbcfbc4701a3c40ada2cb
parent10ffa9acf32c7fb40f084d9cef9a0ff5e608fc0c (diff)
FloatWaveShaper: example program
FIXME need better solution, add evaluate to FloatSample()
-rw-r--r--tests/com/jsyn/examples/PlaySampleWaveShaper.java134
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();
+ }
+}