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/*
* Copyright 2012 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.apps;
import java.awt.BorderLayout;
import java.io.IOException;
import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiMessage;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Receiver;
import javax.swing.JApplet;
import com.jsyn.JSyn;
import com.jsyn.Synthesizer;
import com.jsyn.devices.javasound.MidiDeviceTools;
import com.jsyn.instruments.JSynInstrumentLibrary;
import com.jsyn.midi.MessageParser;
import com.jsyn.swing.InstrumentBrowser;
import com.jsyn.swing.JAppletFrame;
import com.jsyn.swing.PresetSelectionListener;
import com.jsyn.swing.SoundTweaker;
import com.jsyn.unitgen.LineOut;
import com.jsyn.unitgen.UnitSource;
import com.jsyn.unitgen.UnitVoice;
import com.jsyn.util.PolyphonicInstrument;
import com.jsyn.util.VoiceDescription;
import com.softsynth.math.AudioMath;
import com.softsynth.shared.time.TimeStamp;
/**
* Let the user select an instrument using the InstrumentBrowser and play
* them using the ASCII keyboard or with MIDI.
* Sound parameters can be tweaked using faders.
*
* @author Phil Burk (C) 2012 Mobileer Inc
*/
public class InstrumentTester extends JApplet {
private static final long serialVersionUID = -2704222221111608377L;
private Synthesizer synth;
private LineOut lineOut;
private SoundTweaker tweaker;
protected PolyphonicInstrument instrument;
private MyParser messageParser;
class MyParser extends MessageParser {
@Override
public void controlChange(int channel, int index, int value) {
}
@Override
public void noteOff(int channel, int noteNumber, int velocity) {
instrument.noteOff(noteNumber, synth.createTimeStamp());
}
@Override
public void noteOn(int channel, int noteNumber, int velocity) {
double frequency = AudioMath.pitchToFrequency(noteNumber);
double amplitude = velocity / (4 * 128.0);
TimeStamp timeStamp = synth.createTimeStamp();
instrument.noteOn(noteNumber, frequency, amplitude, timeStamp);
}
}
// Write a Receiver to get the messages from a Transmitter.
class CustomReceiver implements Receiver {
@Override
public void close() {
System.out.print("Closed.");
}
@Override
public void send(MidiMessage message, long timeStamp) {
byte[] bytes = message.getMessage();
messageParser.parse(bytes);
}
}
public int setupMidiKeyboard() throws MidiUnavailableException, IOException, InterruptedException {
messageParser = new MyParser();
int result = 2;
MidiDevice keyboard = MidiDeviceTools.findKeyboard();
Receiver receiver = new CustomReceiver();
// Just use default synthesizer.
if (keyboard != null) {
// If you forget to open them you will hear no sound.
keyboard.open();
// Put the receiver in the transmitter.
// This gives fairly low latency playing.
keyboard.getTransmitter().setReceiver(receiver);
System.out.println("Play MIDI keyboard: " + keyboard.getDeviceInfo().getDescription());
result = 0;
} else {
System.out.println("Could not find a keyboard.");
}
return result;
}
@Override
public void init() {
setLayout(new BorderLayout());
synth = JSyn.createSynthesizer();
synth.add(lineOut = new LineOut());
InstrumentBrowser browser = new InstrumentBrowser(new JSynInstrumentLibrary());
browser.addPresetSelectionListener(new PresetSelectionListener() {
@Override
public void presetSelected(VoiceDescription voiceDescription, int presetIndex) {
UnitVoice[] voices = new UnitVoice[8];
for (int i = 0; i < voices.length; i++) {
voices[i] = voiceDescription.createUnitVoice();
}
instrument = new PolyphonicInstrument(voices);
synth.add(instrument);
instrument.usePreset(presetIndex, synth.createTimeStamp());
String title = voiceDescription.getVoiceClassName() + ": "
+ voiceDescription.getPresetNames()[presetIndex];
useSource(instrument, title);
}
});
add(browser, BorderLayout.NORTH);
try {
setupMidiKeyboard();
} catch (MidiUnavailableException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
validate();
}
private void useSource(UnitSource voice, String title) {
lineOut.input.disconnectAll(0);
lineOut.input.disconnectAll(1);
// Connect the source to both left and right output.
voice.getOutput().connect(0, lineOut.input, 0);
voice.getOutput().connect(0, lineOut.input, 1);
if (tweaker != null) {
remove(tweaker);
}
try {
if (synth.isRunning()) {
synth.sleepFor(0.1);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
tweaker = new SoundTweaker(synth, title, voice);
add(tweaker, BorderLayout.CENTER);
validate();
}
@Override
public void start() {
// Start synthesizer using default stereo output at 44100 Hz.
synth.start();
// We only need to start the LineOut. It will pull data from the
// oscillator.
lineOut.start();
}
@Override
public void stop() {
synth.stop();
}
/* Can be run as either an application or as an applet. */
public static void main(String[] args) {
InstrumentTester applet = new InstrumentTester();
JAppletFrame frame = new JAppletFrame("InstrumentTester", applet);
frame.setSize(600, 800);
frame.setVisible(true);
frame.test();
}
}
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