javax.sound.midi.spi
Class MidiFileReaderjava.lang.Object | +--javax.sound.midi.spi.MidiFileReader
- public abstract class MidiFileReader
- extends Object
A MidiFileReader supplies MIDI file-reading services. Classes implementing this interface can parse the format information from one or more types of MIDI file, and can produce a Sequence object from files of these types.
- Since:
- 1.3
Constructor Summary
MidiFileReader()
Method Summary
abstract MidiFileFormat getMidiFileFormat(File file)
Obtains the MIDI file format of the File provided.abstract MidiFileFormat getMidiFileFormat(InputStream stream)
Obtains the MIDI file format of the input stream provided.abstract MidiFileFormat getMidiFileFormat(URL url)
Obtains the MIDI file format of the URL provided.abstract Sequence getSequence(File file)
Obtains a MIDI sequence from the File provided.abstract Sequence getSequence(InputStream stream)
Obtains a MIDI sequence from the input stream provided.abstract Sequence getSequence(URL url)
Obtains a MIDI sequence from the URL provided.
Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
MidiFileReader
public MidiFileReader()
Method Detail
getMidiFileFormat
public abstract MidiFileFormat getMidiFileFormat(InputStream stream) throws InvalidMidiDataException, IOException
- Obtains the MIDI file format of the input stream provided. The stream must point to valid MIDI file data. In general, MIDI file readers may need to read some data from the stream before determining whether they support it. These parsers must be able to mark the stream, read enough data to determine whether they support the stream, and, if not, reset the stream's read pointer to its original position. If the input stream does not support this, this method may fail with an IOException.
- Parameters:
- stream - the input stream from which file format information should be extracted
- Returns:
- a MidiFileFormat object describing the MIDI file format
- Throws:
- InvalidMidiDataException - if the stream does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs
- See Also:
- InputStream.markSupported(), InputStream.mark(int)
getMidiFileFormat
public abstract MidiFileFormat getMidiFileFormat(URL url) throws InvalidMidiDataException, IOException
- Obtains the MIDI file format of the URL provided. The URL must point to valid MIDI file data.
- Parameters:
- url - the URL from which file format information should be extracted
- Returns:
- a MidiFileFormat object describing the MIDI file format
- Throws:
- InvalidMidiDataException - if the URL does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs
getMidiFileFormat
public abstract MidiFileFormat getMidiFileFormat(File file) throws InvalidMidiDataException, IOException
- Obtains the MIDI file format of the File provided. The File must point to valid MIDI file data.
- Parameters:
- file - the File from which file format information should be extracted
- Returns:
- a MidiFileFormat object describing the MIDI file format
- Throws:
- InvalidMidiDataException - if the File does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs
getSequence
public abstract Sequence getSequence(InputStream stream) throws InvalidMidiDataException, IOException
- Obtains a MIDI sequence from the input stream provided. The stream must point to valid MIDI file data. In general, MIDI file readers may need to read some data from the stream before determining whether they support it. These parsers must be able to mark the stream, read enough data to determine whether they support the stream, and, if not, reset the stream's read pointer to its original position. If the input stream does not support this, this method may fail with an IOException.
- Parameters:
- stream - the input stream from which the Sequence should be constructed
- Returns:
- a Sequence object based on the MIDI file data contained in the input stream.
- Throws:
- InvalidMidiDataException - if the stream does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs
- See Also:
- InputStream.markSupported(), InputStream.mark(int)
getSequence
public abstract Sequence getSequence(URL url) throws InvalidMidiDataException, IOException
- Obtains a MIDI sequence from the URL provided. The URL must point to valid MIDI file data.
- Parameters:
- url - the URL for which the Sequence should be constructed
- Returns:
- a Sequence object based on the MIDI file data pointed to by the URL
- Throws:
- InvalidMidiDataException - if the URL does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs
getSequence
public abstract Sequence getSequence(File file) throws InvalidMidiDataException, IOException
- Obtains a MIDI sequence from the File provided. The File must point to valid MIDI file data.
- Parameters:
- file - the File from which the Sequence should be constructed
- Returns:
- a Sequence object based on the MIDI file data pointed to by the File
- Throws:
- InvalidMidiDataException - if the File does not point to valid MIDI file data recognized by the system
- IOException - if an I/O exception occurs