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-rw-r--r--tests/com/jsyn/examples/PlaySampleCrossfade.java183
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diff --git a/tests/com/jsyn/examples/PlaySampleCrossfade.java b/tests/com/jsyn/examples/PlaySampleCrossfade.java
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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.awt.GridLayout;
-import java.io.IOException;
-import java.net.MalformedURLException;
-import java.net.URL;
-
-import javax.swing.JApplet;
-import javax.swing.event.ChangeEvent;
-import javax.swing.event.ChangeListener;
-
-import com.jsyn.JSyn;
-import com.jsyn.Synthesizer;
-import com.jsyn.data.FloatSample;
-import com.jsyn.devices.AudioDeviceFactory;
-import com.jsyn.ports.QueueDataCommand;
-import com.jsyn.swing.DoubleBoundedRangeModel;
-import com.jsyn.swing.DoubleBoundedRangeSlider;
-import com.jsyn.swing.JAppletFrame;
-import com.jsyn.swing.PortControllerFactory;
-import com.jsyn.unitgen.LineOut;
-import com.jsyn.unitgen.VariableRateDataReader;
-import com.jsyn.unitgen.VariableRateMonoReader;
-import com.jsyn.unitgen.VariableRateStereoReader;
-import com.jsyn.util.SampleLoader;
-
-/**
- * Play a sample from a WAV file using JSyn. Use a crossfade to play a loop at an arbitrary
- * position.
- *
- * @author Phil Burk (C) 2010 Mobileer Inc
- */
-public class PlaySampleCrossfade extends JApplet {
- private static final double LOOP_START_FRACTION = 0.2;
- private Synthesizer synth;
- private VariableRateDataReader samplePlayer;
- private LineOut lineOut;
- private FloatSample sample;
- private DoubleBoundedRangeModel rangeModelSize;
- private DoubleBoundedRangeModel rangeModelCrossfade;
- private int loopStartFrame;
-
- @Override
- public void init() {
-
- URL sampleFile;
- try {
- sampleFile = new URL("http://www.softsynth.com/samples/Clarinet.wav");
- } catch (MalformedURLException e2) {
- e2.printStackTrace();
- return;
- }
-
- synth = JSyn.createSynthesizer(AudioDeviceFactory.createAudioDeviceManager(true));
-
- 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) {
- synth.add(samplePlayer = new VariableRateMonoReader());
- samplePlayer.output.connect(0, lineOut.input, 0);
- } else if (sample.getChannelsPerFrame() == 2) {
- synth.add(samplePlayer = new VariableRateStereoReader());
- samplePlayer.output.connect(0, lineOut.input, 0);
- samplePlayer.output.connect(1, lineOut.input, 1);
- } else {
- throw new RuntimeException("Can only play mono or stereo samples.");
- }
-
- samplePlayer.rate.set(sample.getFrameRate());
-
- } catch (IOException e1) {
- e1.printStackTrace();
- }
-
- // Start at arbitrary position near beginning of sample.
- loopStartFrame = (int) (sample.getNumFrames() * LOOP_START_FRACTION);
-
- // Arrange the faders in a stack.
- setLayout(new GridLayout(0, 1));
-
- samplePlayer.rate.setup(4000.0, sample.getFrameRate(), sample.getFrameRate() * 2.0);
- add(PortControllerFactory.createExponentialPortSlider(samplePlayer.rate));
-
- // Use fader to select arbitrary loop size.
- rangeModelSize = new DoubleBoundedRangeModel("LoopSize", 10000, 0.01,
- (1.0 - LOOP_START_FRACTION), 0.5);
- rangeModelSize.addChangeListener(new ChangeListener() {
- @Override
- public void stateChanged(ChangeEvent e) {
- queueNewLoop();
- }
-
- });
- add(new DoubleBoundedRangeSlider(rangeModelSize, 3));
-
- // Use fader to set the size of the crossfade region.
- rangeModelCrossfade = new DoubleBoundedRangeModel("Crossfade", 1000, 0.0, 1000.0, 0.0);
- rangeModelCrossfade.addChangeListener(new ChangeListener() {
- @Override
- public void stateChanged(ChangeEvent e) {
- queueNewLoop();
- }
-
- });
-
- add(new DoubleBoundedRangeSlider(rangeModelCrossfade, 3));
-
- validate();
- }
-
- private void queueNewLoop() {
- int loopSize = (int) (sample.getNumFrames() * rangeModelSize.getDoubleValue());
- if ((loopStartFrame + loopSize) > sample.getNumFrames()) {
- loopSize = sample.getNumFrames() - loopStartFrame;
- }
- int crossFadeSize = (int) (rangeModelCrossfade.getDoubleValue());
-
- // For complex queuing operations, create a command and then customize it.
- QueueDataCommand command = samplePlayer.dataQueue.createQueueDataCommand(sample,
- loopStartFrame, loopSize);
- command.setNumLoops(-1);
- command.setSkipIfOthers(true);
- command.setCrossFadeIn(crossFadeSize);
-
- System.out.println("Queue: " + loopStartFrame + ", #" + loopSize + ", X=" + crossFadeSize);
- synth.queueCommand(command);
- }
-
- @Override
- public void start() {
- // Start synthesizer using default stereo output at 44100 Hz.
- synth.start();
- // Start the LineOut. It will pull data from the oscillator.
- lineOut.start();
-
- // Queue attack portion of sample.
- samplePlayer.dataQueue.queue(sample, 0, loopStartFrame);
- queueNewLoop();
- }
-
- @Override
- public void stop() {
- synth.stop();
- synth.stop();
- }
-
- /* Can be run as either an application or as an applet. */
- public static void main(String args[]) {
- PlaySampleCrossfade applet = new PlaySampleCrossfade();
- JAppletFrame frame = new JAppletFrame("PlaySampleCrossfade", applet);
- frame.setSize(440, 300);
- frame.setVisible(true);
- frame.test();
- }
-
-}