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## javax.sound.midi.spi
Class MidiFileWriter

    java.lang.Object
      |
      +--javax.sound.midi.spi.MidiFileWriter

public abstract class MidiFileWriter
extends Object

A `MidiFileWriter` supplies MIDI file-writing services. Classes that implement this interface can write one or more types of MIDI file from a ``Sequence`` object.

Since:
  1.3

Constructor Summary
`MidiFileWriter()`

Method Summary
`abstract int[]` | `getMidiFileTypes()` Obtains the set of MIDI file types for which file writing support is provided by this file writer.
`abstract int[]` | `getMidiFileTypes(Sequence sequence)` Obtains the file types that this file writer can write from the sequence specified.
`boolean` | `isFileTypeSupported(int fileType)` Indicates whether file writing support for the specified MIDI file type is provided by this file writer.
`boolean` | `isFileTypeSupported(int fileType, Sequence sequence)` Indicates whether a MIDI file of the file type specified can be written from the sequence indicated.
`abstract int` | `write(Sequence in, int fileType, File out)` Writes a stream of bytes representing a MIDI file of the file type indicated to the external file provided.
`abstract int` | `write(Sequence in, int fileType, OutputStream out)` Writes a stream of bytes representing a MIDI file of the file type indicated to the output stream provided.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### MidiFileWriter

    public MidiFileWriter()

Method Detail

### getMidiFileTypes

    public abstract int[] getMidiFileTypes()

  Obtains the set of MIDI file types for which file writing support is provided by this file writer.

  Returns:
    array of file types. If no file types are supported, an array of length 0 is returned.

### getMidiFileTypes

    public abstract int[] getMidiFileTypes(Sequence sequence)

  Obtains the file types that this file writer can write from the sequence specified.

  Parameters:
    `sequence` - the sequence for which MIDI file type support is queried
  Returns:
    array of file types. If no file types are supported, returns an array of length 0.

### isFileTypeSupported

    public boolean isFileTypeSupported(int fileType)

  Indicates whether file writing support for the specified MIDI file type is provided by this file writer.

  Parameters:
    `fileType` - the file type for which write capabilities are queried
  Returns:
    `true` if the file type is supported, otherwise `false`

### isFileTypeSupported

    public boolean isFileTypeSupported(int fileType,
                                       Sequence sequence)

  Indicates whether a MIDI file of the file type specified can be written from the sequence indicated.

  Parameters:
    `fileType` - the file type for which write capabilities are queried
    `sequence` - the sequence for which file writing support is queried
  Returns:
    `true` if the file type is supported for this sequence, otherwise `false`

### write

    public abstract int write(Sequence in,
                              int fileType,
                              OutputStream out)
                       throws IOException

  Writes a stream of bytes representing a MIDI file of the file type indicated to the output stream provided.

  Parameters:
    `in` - sequence containing MIDI data to be written to the file
    `fileType` - type of the file to be written to the output stream
    `out` - stream to which the file data should be written
  Returns:
    the number of bytes written to the output stream
  Throws:
    `IOException` - if an I/O exception occurs
    `IllegalArgumentException` - if the file type is not supported by this file writer
  See Also:
    `isFileTypeSupported(int, Sequence)`, `getMidiFileTypes(Sequence)`

### write

    public abstract int write(Sequence in,
                              int fileType,
                              File out)
                       throws IOException

  Writes a stream of bytes representing a MIDI file of the file type indicated to the external file provided.

  Parameters:
    `in` - sequence containing MIDI data to be written to the external file
    `fileType` - type of the file to be written to the external file
    `out` - external file to which the file data should be written
  Returns:
    the number of bytes written to the file
  Throws:
    `IOException` - if an I/O exception occurs
    `IllegalArgumentException` - if the file type is not supported by this file writer
  See Also:
    `isFileTypeSupported(int, Sequence)`, `getMidiFileTypes(Sequence)`

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