Examples of com.sun.media.sound.SoftSynthesizer

com.sun.media.sound.SoftSynthesizer
The software synthesizer class. @author Karl Helgason

    }


    public static void test(Soundbank soundbank) throws Exception {


        // Create instance of synthesizer using the testing soundbank above
        AudioSynthesizer synth = new SoftSynthesizer();
        AudioInputStream stream = synth.openStream(format, null);
        synth.unloadAllInstruments(synth.getDefaultSoundbank());
        synth.loadAllInstruments(soundbank);
        Receiver recv = synth.getReceiver();


        // Set volume to max and turn reverb off
        ShortMessage reverb_off = new ShortMessage();
        reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
        recv.send(reverb_off, -1);
        ShortMessage full_volume = new ShortMessage();
        full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
        recv.send(full_volume, -1);


        Random random = new Random(3485934583945l);


        // Create random timestamps
        long[] test_timestamps = new long[30];
        for (int i = 1; i < test_timestamps.length; i++) {
            test_timestamps[i] = i * 44100
                    + (int) (random.nextDouble() * 22050.0);
        }


        // Send midi note on message to synthesizer
        for (int i = 0; i < test_timestamps.length; i++) {
            ShortMessage midi_on = new ShortMessage();
            midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
            recv.send(midi_on,
                    (long) ((test_timestamps[i] / 44100.0) * 1000000.0));
        }


        // Measure timing from rendered audio
        float[] fbuffer = new float[100];
        byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
        long firsts = -1;
        int counter = 0;
        long s = 0;
        long max_jitter = 0;
        outerloop: for (int k = 0; k < 10000000; k++) {
            stream.read(buffer);
            AudioFloatConverter.getConverter(format).toFloatArray(buffer,
                    fbuffer);
            for (int i = 0; i < fbuffer.length; i++) {
                if (fbuffer[i] != 0) {
                    if (firsts == -1)
                        firsts = s;


                    long measure_time = (s - firsts);
                    long predicted_time = test_timestamps[counter];


                    long jitter = Math.abs(measure_time - predicted_time);


                    if (jitter > 10)
                        max_jitter = jitter;


                    counter++;
                    if (counter == test_timestamps.length)
                        break outerloop;
                }
                s++;
            }
        }
        synth.close();


        if (counter == 0)
            throw new Exception("Nothing was measured!");


        if (max_jitter != 0) {

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public class NoteOverFlowTest2 {


    public static void main(String[] args) throws Exception
    {        
        // Create instance of the synthesizer with very low polyphony
        AudioSynthesizer synth = new SoftSynthesizer();
        AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
        Map<String, Object> p = new HashMap<String, Object>();
        p.put("max polyphony", new Integer(5));
        AudioInputStream stream = synth.openStream(format, p);
                        
        // Create instrument with too many regions (more than max polyphony)
        SF2Soundbank sf2 = new SF2Soundbank();
        
        SF2Sample sample = new SF2Sample(sf2);
        sample.setName("test sample");
        sample.setData(new byte[100]);
        sample.setSampleRate(44100);
        sample.setOriginalPitch(20);
        sf2.addResource(sample);        
        
        SF2Layer layer = new SF2Layer(sf2);
        layer.setName("test layer");
        sf2.addResource(layer);


        for (int i = 0; i < 100; i++) {
            SF2LayerRegion region = new SF2LayerRegion();
            region.setSample(sample);
            layer.getRegions().add(region);
        }
        
        SF2Instrument ins = new SF2Instrument(sf2);
        ins.setPatch(new Patch(0,0));
        ins.setName("test instrument");
        sf2.addInstrument(ins);
        
        SF2InstrumentRegion insregion = new SF2InstrumentRegion();
        insregion.setLayer(layer);
        ins.getRegions().add(insregion);


        // Load the test soundbank into the synthesizer
        synth.unloadAllInstruments(synth.getDefaultSoundbank());
        synth.loadAllInstruments(sf2);
        
        // Send out one midi on message
        MidiChannel ch1 = synth.getChannels()[0];
        ch1.programChange(0); 
        ch1.noteOn(64, 64);
        
        // Read 1 sec from stream
        stream.skip(format.getFrameSize() * ((int)(format.getFrameRate() * 2)));


        // Close the synthesizer after use
        synth.close();
    }

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public class NoteOverFlowTest {


    public static void main(String[] args) throws Exception
    {        
        AudioSynthesizer synth = new SoftSynthesizer();
        AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
        AudioInputStream stream = synth.openStream(format, null);
                        
        // Make all voices busy, e.g. 
        // send midi on and midi off on all available voices        
        MidiChannel ch1 = synth.getChannels()[0];
        ch1.programChange(48); // Use contionus instrument like string ensemble
        for (int i = 0; i < synth.getMaxPolyphony(); i++) {            
            ch1.noteOn(64, 64);
            ch1.noteOff(64);
        }
        
        // Now send single midi on, and midi off message
        ch1.noteOn(64, 64);
        ch1.noteOff(64);
        
        // Read 10 sec from stream, by this time all voices should be inactvie
        stream.skip(format.getFrameSize() * ((int)(format.getFrameRate() * 20)));


        // If no voice are active, then this test will pass
        VoiceStatus[] v = synth.getVoiceStatus();
        for (int i = 0; i < v.length; i++) {
            if(v[i].active)
            {
                throw new RuntimeException("Not all voices are inactive!");
            }
        }
        
        // Close the synthesizer after use
        synth.close();
    }

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public class GetMidiDevice {


    public static void main(String[] args) throws Exception {


        AudioSynthesizer synth = new SoftSynthesizer();
        synth.openStream(null, null);
        Receiver recv = synth.getReceiver();
        if (((SoftReceiver) recv).getMidiDevice() != synth) {
            throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
                    + "instance of the synthesizer");
        }
        synth.close();
    }

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    if(!value)
      throw new RuntimeException("assertTrue fails!");
  }
    
  public static void main(String[] args) throws Exception {
    AudioSynthesizer synth = new SoftSynthesizer();
    Receiver recv = synth.getReceiver();
    assertTrue(recv != null);
    ShortMessage sm = new ShortMessage();
    sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
        synth.open(new DummySourceDataLine(), null);
    recv.send(sm, -1);    
    synth.close();      
    try
    {
      recv.send(sm, -1);
      throw new RuntimeException("Exception not thrown!");
    }

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