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Diffstat (limited to 'tests/com/jsyn/examples/PlaySampleCrossfade.java')
| -rw-r--r-- | tests/com/jsyn/examples/PlaySampleCrossfade.java | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/tests/com/jsyn/examples/PlaySampleCrossfade.java b/tests/com/jsyn/examples/PlaySampleCrossfade.java new file mode 100644 index 0000000..b5ea5ca --- /dev/null +++ b/tests/com/jsyn/examples/PlaySampleCrossfade.java @@ -0,0 +1,183 @@ +/* + * 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(); + } + +} |