Example usage for javax.sound.midi Sequencer open

Introduction

In this page you can find the example usage for javax.sound.midi Sequencer open.

Prototype

void open() throws MidiUnavailableException;

Source Link

Document

Opens the device, indicating that it should now acquire any system resources it requires and become operational.

Usage

From source file:Main.java

public static void streamMidiSequence(URL url)
        throws IOException, InvalidMidiDataException, MidiUnavailableException {
    Sequencer sequencer = null; // Converts a Sequence to MIDI events
    Synthesizer synthesizer = null; // Plays notes in response to MIDI events

    try {//from  w w  w  . j  av a2 s.  c o m
        // Create, open, and connect a Sequencer and Synthesizer
        // They are closed in the finally block at the end of this method.
        sequencer = MidiSystem.getSequencer();
        sequencer.open();
        synthesizer = MidiSystem.getSynthesizer();
        synthesizer.open();
        sequencer.getTransmitter().setReceiver(synthesizer.getReceiver());

        // Specify the InputStream to stream the sequence from
        sequencer.setSequence(url.openStream());

        // This is an arbitrary object used with wait and notify to
        // prevent the method from returning before the music finishes
        final Object lock = new Object();

        // Register a listener to make the method exit when the stream is
        // done. See Object.wait() and Object.notify()
        sequencer.addMetaEventListener(new MetaEventListener() {
            public void meta(MetaMessage e) {
                if (e.getType() == END_OF_TRACK) {
                    synchronized (lock) {
                        lock.notify();
                    }
                }
            }
        });

        // Start playing the music
        sequencer.start();

        // Now block until the listener above notifies us that we're done.
        synchronized (lock) {
            while (sequencer.isRunning()) {
                try {
                    lock.wait();
                } catch (InterruptedException e) {
                }
            }
        }
    } finally {
        // Always relinquish the sequencer, so others can use it.
        if (sequencer != null)
            sequencer.close();
        if (synthesizer != null)
            synthesizer.close();
    }
}

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From source file:tvbrowser.extras.reminderplugin.ReminderPlugin.java

/**
 * Plays a sound./* w w w  . ja va 2s  .co m*/
 *
 * @param fileName
 *          The file name of the sound to play.
 * @return The sound Object.
 */
public static Object playSound(final String fileName) {
    try {
        if (StringUtils.endsWithIgnoreCase(fileName, ".mid")) {
            final Sequencer sequencer = MidiSystem.getSequencer();
            sequencer.open();

            final InputStream midiFile = new FileInputStream(fileName);
            sequencer.setSequence(MidiSystem.getSequence(midiFile));

            sequencer.start();

            new Thread("Reminder MIDI sequencer") {
                @Override
                public void run() {
                    setPriority(Thread.MIN_PRIORITY);
                    while (sequencer.isRunning()) {
                        try {
                            Thread.sleep(100);
                        } catch (Exception ee) {
                            // ignore
                        }
                    }

                    try {
                        sequencer.close();
                        midiFile.close();
                    } catch (Exception ee) {
                        // ignore
                    }
                }
            }.start();

            return sequencer;
        } else {
            final AudioInputStream ais = AudioSystem.getAudioInputStream(new File(fileName));

            final AudioFormat format = ais.getFormat();
            final DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);

            if (AudioSystem.isLineSupported(info)) {
                final SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info);

                line.open(format);
                line.start();

                new Thread("Reminder audio playing") {
                    private boolean stopped;

                    @Override
                    public void run() {
                        byte[] myData = new byte[1024 * format.getFrameSize()];
                        int numBytesToRead = myData.length;
                        int numBytesRead = 0;
                        int total = 0;
                        int totalToRead = (int) (format.getFrameSize() * ais.getFrameLength());
                        stopped = false;

                        line.addLineListener(new LineListener() {
                            public void update(LineEvent event) {
                                if (line != null && !line.isRunning()) {
                                    stopped = true;
                                    line.close();
                                    try {
                                        ais.close();
                                    } catch (Exception ee) {
                                        // ignore
                                    }
                                }
                            }
                        });

                        try {
                            while (total < totalToRead && !stopped) {
                                numBytesRead = ais.read(myData, 0, numBytesToRead);

                                if (numBytesRead == -1) {
                                    break;
                                }

                                total += numBytesRead;
                                line.write(myData, 0, numBytesRead);
                            }
                        } catch (Exception e) {
                        }

                        line.drain();
                        line.stop();
                    }
                }.start();

                return line;
            } else {
                URL url = new File(fileName).toURI().toURL();
                AudioClip clip = Applet.newAudioClip(url);
                clip.play();
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
        if ((new File(fileName)).isFile()) {
            URL url;
            try {
                url = new File(fileName).toURI().toURL();
                AudioClip clip = Applet.newAudioClip(url);
                clip.play();
            } catch (MalformedURLException e1) {
            }
        } else {
            String msg = mLocalizer.msg("error.1", "Error loading reminder sound file!\n({0})", fileName);
            JOptionPane.showMessageDialog(UiUtilities.getBestDialogParent(MainFrame.getInstance()), msg,
                    Localizer.getLocalization(Localizer.I18N_ERROR), JOptionPane.ERROR_MESSAGE);
        }
    }
    return null;
}

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