Java Receiver.send方法代碼示例

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
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!");
    }
    catch(Exception e)
    {
        // Just checking if exception is thrown
    }
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
void sendMessage(byte[] data, long timeStamp) {
    try {
        synchronized(transmitters) {
            int size = transmitters.size();
            if (TRACE_TRANSMITTER) Printer.println("Sending long message to "+size+" transmitter's receivers");
            for (int i = 0; i < size; i++) {
                Receiver receiver = transmitters.get(i).getReceiver();
                if (receiver != null) {
                    //$$fb 2002-04-02: SysexMessages are mutable, so
                    // an application could change the contents of this object,
                    // or try to use the object later. So we can't get around object creation
                    // But the array need not be unique for each FastSysexMessage object,
                    // because it cannot be modified.
                    receiver.send(new FastSysexMessage(data), timeStamp);
                }
            }
        }
    } catch (InvalidMidiDataException e) {
        // this happens when invalid data comes over the wire. Ignore it.
        return;
    }
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
/**
 * Execute Receiver.send() and expect that there is no exception.
 */
private static boolean testReceiverSend() {
    boolean result = true;

    Receiver receiver;
    ShortMessage shMsg = new ShortMessage();

    try {
        receiver = MidiSystem.getReceiver();
        shMsg.setMessage(ShortMessage.NOTE_ON, 0,60, 93);
        try {
            receiver.send( shMsg, -1 );
        } catch(IllegalStateException ilEx) {
            ilEx.printStackTrace(System.out);
            out("IllegalStateException was thrown incorrectly!");
            result = false;
        }
        receiver.close();
    } catch(MidiUnavailableException e) {
        out("Midi unavailable, cannot test.");
    } catch(InvalidMidiDataException ine) {
        out("InvalidMidiDataException, cannot test.");
    }
    return result;
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
@Override
protected void captureMidiMessages(final Receiver receiver) throws MidiUnavailableException {
	// Modify all MidiMessages so that they specify channel 10 (encoded as 9,
	// which I suppose means that 0 indicates midi channel 1)
	Receiver setChannelReceiver = new Receiver() {
		@Override
		public void send(MidiMessage message, long timeStamp) {
			if (message instanceof ShortMessage) {
				ShortMessage sm = (ShortMessage) message;
				byte[] data = sm.getMessage();
				byte orig = data[0];
				data[0] = (byte) ((orig | 9) & 0xff);
				message = Midi.createShortMessage(data);
			}
			receiver.send(message, timeStamp);
		}
		
		@Override
		public void close() {
			receiver.close();
		}
	};
	
	super.captureMidiMessages(setChannelReceiver);
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
/**
 * Send note-off to all pending notes
 *
 */
public final void releasePendingNoteOffs()
{
    for(Receiver recv : pendingNoteOffs.keySet())
    {
        for (int note : pendingNoteOffs.get(recv)) {
            ShortMessage shm = new ShortMessage();
            try {
                shm.setMessage(ShortMessage.NOTE_ON, (note >> 8) & 0xf,
                        note & 0xff, 0);
                
                    recv.send(shm, -1);
            } catch (InvalidMidiDataException e) {
                e.printStackTrace();
            }
        }
    }
    pendingNoteOffs.clear();
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
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) {
            throw new Exception("Jitter has occurred! "
                    + "(max jitter = " + max_jitter + ")");
        }

    }
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
public static void write(OutputStream out, List<MidiEvent> events, MidiToAudioSettings settings) throws Throwable {
	MidiToAudioSynth.instance().openSynth();
	MidiToAudioSynth.instance().loadSoundbank(getPatchs(events), settings.getSoundbankPath());
	
	int usqTempo = 60000000 / 120;
	long previousTick = 0;
	long timePosition = 0;
	MidiToAudioWriter.sort(events);
	Receiver receiver = MidiToAudioSynth.instance().getReceiver();
	AudioInputStream stream = MidiToAudioSynth.instance().getStream();
	
	Iterator<MidiEvent> it = events.iterator();
	while(it.hasNext()){
		MidiEvent event = (MidiEvent)it.next();
		MidiMessage msg = event.getMessage();
		
		timePosition += ( (event.getTick() - previousTick) * usqTempo) / TGDuration.QUARTER_TIME;
		
		if (msg instanceof MetaMessage) {
			if (((MetaMessage) msg).getType() == 0x51) {
				byte[] data = ((MetaMessage) msg).getData();
				usqTempo = ((data[0] & 0xff) << 16) | ((data[1] & 0xff) << 8) | (data[2] & 0xff);
			}
		} else {
			receiver.send(msg, timePosition);
		}
		previousTick = event.getTick();
	}
	
	long duration = (long) (stream.getFormat().getFrameRate() * ( (timePosition / 1000000.0) ));
	
	AudioInputStream srcStream = new AudioInputStream(stream, stream.getFormat(), duration );
	AudioInputStream dstStream = AudioSystem.getAudioInputStream(settings.getFormat(), srcStream );
	AudioSystem.write(new AudioInputStream(dstStream, dstStream.getFormat(), duration ), settings.getType(), out);
	
	dstStream.close();
	srcStream.close();
	
	MidiToAudioSynth.instance().closeSynth();
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
public static void noteOn(final Receiver recv, final int note, final int channel, final int velocity)
{
           try
	    {
               ShortMessage msg = new ShortMessage();
               msg.setMessage(ShortMessage.NOTE_ON,channel,note,velocity);
               recv.send(msg,-1);
	    }
	    catch(Exception e) {e.printStackTrace();}
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
public static void noteOff(final Receiver recv,final int note, final int channel)
{
        try
        {
            ShortMessage msg = new ShortMessage();
            msg.setMessage(ShortMessage.NOTE_ON,channel,note,0);
            recv.send(msg,-1);
        }
        catch(Exception e) {e.printStackTrace();}
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
private static void sendControlChange(Receiver receiver, int midiChan, int ctrlId, int value) {
    ShortMessage msg = new ShortMessage();
    try {
        msg.setMessage(ShortMessage.CONTROL_CHANGE, midiChan, ctrlId, value);
    } catch (InvalidMidiDataException ex) {
        throw new RuntimeException(ex);
    }
    receiver.send(msg, -1);
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
private static void sendSysexMessage(Receiver receiver, byte... message) {
 SysexMessage msg = new SysexMessage();
 try {
        msg.setMessage(message, message.length);
    } catch (InvalidMidiDataException ex) {
        throw new RuntimeException(ex);
    }
    receiver.send(msg, -1);
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
private void createMessageSource(final Instrument liveInstr) throws MidiUnavailableException,
		IOException {
	this.liveSynth = getInstrumentInfo(liveInstr);

	// Filter incoming MidiMessages to:
	// - change to channel 10 (if this is a percussion instrument)
	// - add them to capturedEvents list
	final Receiver delegate = liveSynth.source;
	liveSynth.source = new Receiver() {
		@Override
		public void send(MidiMessage message, long timeStamp) {
			if (liveInstr.getType() == InstrumentType.MIDI_PERCUSSION) {
				// Percussion messages should on channel 10
				if (message instanceof ShortMessage) {
					ShortMessage smsg = (ShortMessage) message;
					message = Midi.createShortMessage(smsg.getStatus()|9, smsg.getData1(), smsg.getData2());
				}
			}

			capturedEvents.add(new MidiMessageAndTimeStamp(message, timeStamp));
			
			delegate.send(message, timeStamp);
		}
		
		@Override
		public void close() {
			delegate.close();
		}
	};
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
public static void main(String argv[]) {
    Sequencer s = null;
    try {
        s = MidiSystem.getSequencer();
        s.open();
    } catch (final MidiUnavailableException ignored) {
        // the test is not applicable
        return;
    }
    try {
        Sequence seq = new Sequence(Sequence.PPQ, 384, 2);
        s.setSequence(seq);
        Track t = seq.getTracks()[0];
        ShortMessage msg = new ShortMessage();
        msg.setMessage(0x90, 0x40, 0x7F);
        t.add(new MidiEvent(msg, 11000));
        msg.setMessage(0x90, 0x40, 0x00);
        t.add(new MidiEvent(msg, 12000));
        t = seq.getTracks()[1];
        s.recordEnable(t, -1);
        System.out.println("Started recording...");
        s.startRecording();
        Receiver r = s.getReceiver();
        Thread.sleep(100);
        // send a normal message
        System.out.println("Recording a normal NOTE ON message...");
        msg.setMessage(0x90, 0x40, 0x6F);
        r.send(msg, -1);
        Thread.sleep(100);
        // send a normal message
        System.out.println("Recording a normal NOTE OFF message...");
        msg.setMessage(0x90, 0x40, 0x00);
        r.send(msg, -1);
        Thread.sleep(100);
        s.stop();
        // now see if the messages were recorded
        System.out.println("Recorded messages:");
        int sameMessage = 0;
        for (int i = 0; i < t.size(); i++) {
            System.out.print(" "+(i+1)+". ");
            printEvent(t.get(i));
            if (t.get(i).getMessage() == msg) {
                System.out.println("## Failed: Same Message reference!");
                sameMessage++;
            }
        }
        if (sameMessage > 0) {
            System.out.println("## Failed: The same instance was recorded!");
            throw new Exception("Test FAILED!");
        }
        System.out.println("Did not detect any duplicate messages.");
        System.out.println("Test passed.");
    } catch (Exception e) {
        System.out.println("Unexpected Exception: "+e);
        //e.printStackTrace();
        throw new RuntimeException("Test FAILED!");
    } finally {
        s.close();
    }
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
private AudioInputStream getAudioInputStream(final Sequence seq)
        throws InvalidMidiDataException {
    AudioSynthesizer synth = (AudioSynthesizer) new SoftSynthesizer();
    AudioInputStream stream;
    Receiver recv;
    try {
        stream = synth.openStream(format, null);
        recv = synth.getReceiver();
    } catch (MidiUnavailableException e) {
        throw new InvalidMidiDataException(e.toString());
    }
    float divtype = seq.getDivisionType();
    Track[] tracks = seq.getTracks();
    int[] trackspos = new int[tracks.length];
    int mpq = 500000;
    int seqres = seq.getResolution();
    long lasttick = 0;
    long curtime = 0;
    while (true) {
        MidiEvent selevent = null;
        int seltrack = -1;
        for (int i = 0; i < tracks.length; i++) {
            int trackpos = trackspos[i];
            Track track = tracks[i];
            if (trackpos < track.size()) {
                MidiEvent event = track.get(trackpos);
                if (selevent == null || event.getTick() < selevent.getTick()) {
                    selevent = event;
                    seltrack = i;
                }
            }
        }
        if (seltrack == -1)
            break;
        trackspos[seltrack]++;
        long tick = selevent.getTick();
        if (divtype == Sequence.PPQ)
            curtime += ((tick - lasttick) * mpq) / seqres;
        else
            curtime = (long) ((tick * 1000000.0 * divtype) / seqres);
        lasttick = tick;
        MidiMessage msg = selevent.getMessage();
        if (msg instanceof MetaMessage) {
            if (divtype == Sequence.PPQ) {
                if (((MetaMessage) msg).getType() == 0x51) {
                    byte[] data = ((MetaMessage) msg).getData();
                    if (data.length < 3) {
                        throw new InvalidMidiDataException();
                    }
                    mpq = ((data[0] & 0xff) << 16)
                            | ((data[1] & 0xff) << 8) | (data[2] & 0xff);
                }
            }
        } else {
            recv.send(msg, curtime);
        }
    }

    long totallen = curtime / 1000000;
    long len = (long) (stream.getFormat().getFrameRate() * (totallen + 4));
    stream = new AudioInputStream(stream, stream.getFormat(), len);
    return stream;
}
 

import javax.sound.midi.Receiver; //導入方法依賴的package包/類
public AudioInputStream getAudioInputStream(Sequence seq)
        throws UnsupportedAudioFileException, IOException {
    AudioSynthesizer synth = (AudioSynthesizer) new SoftSynthesizer();
    AudioInputStream stream;
    Receiver recv;
    try {
        stream = synth.openStream(format, null);
        recv = synth.getReceiver();
    } catch (MidiUnavailableException e) {
        throw new IOException(e.toString());
    }
    float divtype = seq.getDivisionType();
    Track[] tracks = seq.getTracks();
    int[] trackspos = new int[tracks.length];
    int mpq = 500000;
    int seqres = seq.getResolution();
    long lasttick = 0;
    long curtime = 0;
    while (true) {
        MidiEvent selevent = null;
        int seltrack = -1;
        for (int i = 0; i < tracks.length; i++) {
            int trackpos = trackspos[i];
            Track track = tracks[i];
            if (trackpos < track.size()) {
                MidiEvent event = track.get(trackpos);
                if (selevent == null || event.getTick() < selevent.getTick()) {
                    selevent = event;
                    seltrack = i;
                }
            }
        }
        if (seltrack == -1)
            break;
        trackspos[seltrack]++;
        long tick = selevent.getTick();
        if (divtype == Sequence.PPQ)
            curtime += ((tick - lasttick) * mpq) / seqres;
        else
            curtime = (long) ((tick * 1000000.0 * divtype) / seqres);
        lasttick = tick;
        MidiMessage msg = selevent.getMessage();
        if (msg instanceof MetaMessage) {
            if (divtype == Sequence.PPQ) {
                if (((MetaMessage) msg).getType() == 0x51) {
                    byte[] data = ((MetaMessage) msg).getData();
                    if (data.length < 3) {
                        throw new UnsupportedAudioFileException();
                    }
                    mpq = ((data[0] & 0xff) << 16)
                            | ((data[1] & 0xff) << 8) | (data[2] & 0xff);
                }
            }
        } else {
            recv.send(msg, curtime);
        }
    }

    long totallen = curtime / 1000000;
    long len = (long) (stream.getFormat().getFrameRate() * (totallen + 4));
    stream = new AudioInputStream(stream, stream.getFormat(), len);
    return stream;
}