Examples with MidiChannel javax.sound.midi.MidiChannel used on opensource projects

Example 1 with MidiChannel

use of javax.sound.midi.MidiChannel in project jdk8u_jdk by JetBrains.

the class TestPreciseTimestampRendering method createTestSoundbankWithChannelMixer.

public static Soundbank createTestSoundbankWithChannelMixer() {
    SF2Soundbank soundbank = createTestSoundbank();
    SimpleSoundbank simplesoundbank = new SimpleSoundbank();
    SimpleInstrument simpleinstrument = new SimpleInstrument() {

        public ModelChannelMixer getChannelMixer(MidiChannel channel, AudioFormat format) {
            return new ModelAbstractChannelMixer() {

                boolean active = true;

                public boolean process(float[][] buffer, int offset, int len) {
                    for (int i = 0; i < buffer.length; i++) {
                        float[] cbuffer = buffer[i];
                        for (int j = 0; j < cbuffer.length; j++) {
                            cbuffer[j] = -cbuffer[j];
                        }
                    }
                    return active;
                }

                public void stop() {
                    active = false;
                }
            };
        }
    };
    simpleinstrument.add(soundbank.getInstruments()[0]);
    simplesoundbank.addInstrument(simpleinstrument);
    return simplesoundbank;
}

Example 2 with MidiChannel

use of javax.sound.midi.MidiChannel in project jdk8u_jdk by JetBrains.

the class NoteOverFlowTest method main.

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];
    // Use contionus instrument like string ensemble
    ch1.programChange(48);
    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();
}

Example 3 with MidiChannel

use of javax.sound.midi.MidiChannel in project jdk8u_jdk by JetBrains.

the class NoteOverFlowTest2 method main.

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();
}