Examples of javax.sound.midi.spi.MidiFileWriter

javax.sound.midi.spi.MidiFileWriter
A {@code MidiFileWriter} supplies MIDI file-writing services. Classes thatimplement this interface can write one or more types of MIDI file from a {@link Sequence} object. @author Kara Kytle @since 1.3

     * @return <code>true</code> if the file type is supported,
     * otherwise <code>false</code>
     */
    public static boolean isFileTypeSupported(int fileType) {


        MidiFileWriter providers[] = getMidiFileWriters();


        for(int i=0; i<providers.length; i++) {
            if( providers[i].isFileTypeSupported(fileType) == true ) {
                return true;
            }

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     * @return the set of supported file types.  If no file types are supported,
     * returns an array of length 0.
     */
    public static int[] getMidiFileTypes(Sequence sequence) {


        MidiFileWriter providers[] = getMidiFileWriters();
        int types[][] = new int[ providers.length ][];
        int returnTypes[] = null;
        int numTypes = 0;
        int index = 0;

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     * @return <code>true</code> if the file type is supported for this
     * sequence, otherwise <code>false</code>
     */
    public static boolean isFileTypeSupported(int fileType, Sequence sequence) {


        MidiFileWriter providers[] = getMidiFileWriters();


        for(int i=0; i<providers.length; i++) {
            if( providers[i].isFileTypeSupported(fileType,sequence) == true ) {
                return true;
            }

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     * @see #isFileTypeSupported(int, Sequence)
     * @see     #getMidiFileTypes(Sequence)
     */
    public static int write(Sequence in, int fileType, OutputStream out) throws IOException {


        MidiFileWriter providers[] = getMidiFileWriters();
        //$$fb 2002-04-17: Fix for 4635287: Standard MidiFileWriter cannot write empty Sequences
        int bytesWritten = -2;


        //$$fb 2001-08-03: reverse this loop to give external providers more priority (Bug #4487550)
        for(int i = providers.length-1; i >= 0; i-- ) {

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     * @see #isFileTypeSupported(int, Sequence)
     * @see     #getMidiFileTypes(Sequence)
     */
    public static int write(Sequence in, int type, File out) throws IOException {


        MidiFileWriter providers[] = getMidiFileWriters();
        //$$fb 2002-04-17: Fix for 4635287: Standard MidiFileWriter cannot write empty Sequences
        int bytesWritten = -2;


        //$$fb 2001-08-03: reverse this loop to give external providers more priority (Bug #4487550)
        for(int i = providers.length-1; i >= 0; i-- ) {

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    }


    private static MidiFileWriter[] getMidiFileWriters() {


        Vector v = new Vector();
        MidiFileWriter varray[];


        try {


            Class.forName( "sun.misc.Service" );

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    // The number of supported formats.
    int count = 0;
    Iterator writers = lookupMidiFileWriterProviders();
    while (writers.hasNext())
    {
      MidiFileWriter fw = (MidiFileWriter) writers.next();
      int types[] = fw.getMidiFileTypes();
      for (int i = types.length; i > 0;)
      {
        int type = types[--i];
        if (supported.length > type && !supported[type])
        {

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  public static boolean isFileTypeSupported(int fileType)
  {
    Iterator writers = lookupMidiFileWriterProviders();
    while (writers.hasNext())
    {
      MidiFileWriter fw = (MidiFileWriter) writers.next();


      if (fw.isFileTypeSupported(fileType))
        return true;
    }
    return false;
  }

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    // The number of supported formats.
    int count = 0;
    Iterator writers = lookupMidiFileWriterProviders();
    while (writers.hasNext())
    {
      MidiFileWriter fw = (MidiFileWriter) writers.next();
      int types[] = fw.getMidiFileTypes(sequence);
      for (int i = types.length; i > 0;)
      {
        int type = types[--i];
        if (supported.length > type && !supported[type])
        {

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  public static boolean isFileTypeSupported(int fileType, Sequence sequence)
  {
    Iterator writers = lookupMidiFileWriterProviders();
    while (writers.hasNext())
    {
      MidiFileWriter fw = (MidiFileWriter) writers.next();


      if (fw.isFileTypeSupported(fileType, sequence))
        return true;
    }
    return false;
  }

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