Examples of javax.sound.midi.Sequence

javax.sound.midi.Sequence
A Sequence is a data structure containing musical information (often an entire song or composition) that can be played back by a {@link Sequencer} object. Specifically, the Sequence contains timing information and one or more tracks. Each {@link Track track} consists of a series of MIDI events (such as note-ons, note-offs, program changes, and meta-events). The sequence's timing information specifies the type of unit that is used to time-stamp the events in the sequence.
A Sequence can be created from a MIDI file by reading the file into an input stream and invoking one of the getSequence methods of {@link MidiSystem}. A sequence can also be built from scratch by adding new Tracks to an empty Sequence, and adding {@link MidiEvent} objects to these Tracks. @see Sequencer#setSequence(java.io.InputStream stream) @see Sequencer#setSequence(Sequence sequence) @see Track#add(MidiEvent) @see MidiFileFormat @author Kara Kytle


    public void openFilename(String strFilename) throws Exception {
        this.strFilename = strFilename;
        File midiFile = new File(strFilename);


        Sequence sequence = null;
        sequence = MidiSystem.getSequence(midiFile);
        sm_sequencer = MidiSystem.getSequencer();


        sm_sequencer.open();
        sm_sequencer.setSequence(sequence);

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    public AudioInputStream getAudioInputStream(InputStream inputstream)
            throws UnsupportedAudioFileException, IOException {


        inputstream.mark(200);
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(inputstream);
        } catch (InvalidMidiDataException e) {
            inputstream.reset();
            throw new UnsupportedAudioFileException();

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        return getAudioInputStream(seq);
    }


    public AudioFileFormat getAudioFileFormat(URL url)
            throws UnsupportedAudioFileException, IOException {
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(url);
        } catch (InvalidMidiDataException e) {
            throw new UnsupportedAudioFileException();
        } catch (IOException e) {

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        return getAudioFileFormat(seq);
    }


    public AudioFileFormat getAudioFileFormat(File file)
            throws UnsupportedAudioFileException, IOException {
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(file);
        } catch (InvalidMidiDataException e) {
            throw new UnsupportedAudioFileException();
        } catch (IOException e) {

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        return getAudioFileFormat(seq);
    }


    public AudioInputStream getAudioInputStream(URL url)
            throws UnsupportedAudioFileException, IOException {
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(url);
        } catch (InvalidMidiDataException e) {
            throw new UnsupportedAudioFileException();
        } catch (IOException e) {

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    public AudioInputStream getAudioInputStream(File file)
            throws UnsupportedAudioFileException, IOException {
        if (!file.getName().toLowerCase().endsWith(".mid"))
            throw new UnsupportedAudioFileException();
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(file);
        } catch (InvalidMidiDataException e) {
            throw new UnsupportedAudioFileException();
        } catch (IOException e) {

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    public AudioFileFormat getAudioFileFormat(InputStream inputstream)
            throws UnsupportedAudioFileException, IOException {


        inputstream.mark(200);
        Sequence seq;
        try {
            seq = MidiSystem.getSequence(inputstream);
        } catch (InvalidMidiDataException e) {
            inputstream.reset();
            throw new UnsupportedAudioFileException();

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        xhtml.startDocument();


        // MidiSystem expects the stream to support the mark feature
        InputStream buffered = new BufferedInputStream(stream);
        try {
            Sequence sequence = MidiSystem.getSequence(buffered);


            Track[] tracks = sequence.getTracks();
            metadata.set("tracks", String.valueOf(tracks.length));


            Patch[] patches = sequence.getPatchList();
            metadata.set("patches", String.valueOf(patches.length));


            float type = sequence.getDivisionType();
            if (type == Sequence.PPQ) {
                metadata.set("divisionType", "PPQ");
            } else if (type == Sequence.SMPTE_24) {
                metadata.set("divisionType", "SMPTE_24");
            } else if (type == Sequence.SMPTE_25) {

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        this.midiFile = midiFile;


        try {
            sequencer = MidiSystem.getSequencer(false);
            sequencer.open();
            Sequence seq = MidiSystem.getSequence(midiFile);
            sequencer.setSequence(seq);
            if(loop)
                sequencer.setLoopCount(Sequencer.LOOP_CONTINUOUSLY);
        } catch (MidiUnavailableException e) {
            stop();

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      throw new RuntimeException(e);
    }
  }
  
  private Sequence getSequence(String id) {
    Sequence sequence = sequences.get(id);
    
    if (sequence == null) {
      try {
        InputStream is = ClassLoader.getSystemResourceAsStream("audio/" + id + ".mid");
        sequence = MidiSystem.getSequence(is);

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