Merge pull request #41 from philburk/instruments

Instruments

1 files changed, 87 insertions, 6 deletions

diff --git a/src/com/jsyn/apps/InstrumentTester.java b/src/com/jsyn/apps/InstrumentTester.java
index 4186703..6e347cd 100644
--- a/src/com/jsyn/apps/InstrumentTester.java
+++ b/src/com/jsyn/apps/InstrumentTester.java
@@ -4,9 +4,9 @@
  * 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.
@@ -17,12 +17,19 @@
 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;
@@ -32,11 +39,14 @@ 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. Sound parameters can be tweaked using faders.
- * 
+ * 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 {
@@ -44,6 +54,64 @@ public class InstrumentTester extends JApplet {
     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() {
@@ -61,7 +129,7 @@ public class InstrumentTester extends JApplet {
                 for (int i = 0; i < voices.length; i++) {
                     voices[i] = voiceDescription.createUnitVoice();
                 }
-                PolyphonicInstrument instrument = new PolyphonicInstrument(voices);
+                instrument = new PolyphonicInstrument(voices);
                 synth.add(instrument);
                 instrument.usePreset(presetIndex, synth.createTimeStamp());
                 String title = voiceDescription.getVoiceClassName() + ": "
@@ -71,6 +139,19 @@ public class InstrumentTester extends JApplet {
         });
         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();
     }