javax.sound.midi
Class MidiFileFormat

java.lang.Object
  javax.sound.midi.MidiFileFormat

public class MidiFileFormat

extends Object

A MidiFileFormat object encapsulates a MIDI file's type, as well as its length and timing information.

See Also:

MidiSystem.getMidiFileFormat(java.io.File), Sequencer.setSequence(java.io.InputStream stream)

Field Summary

protected int	byteLength The length of the MIDI file in bytes.
protected float	divisionType The division type of the MIDI file.
protected long	microsecondLength The duration of the MIDI file in microseconds.
protected int	resolution The timing resolution of the MIDI file.
protected int	type The type of MIDI file.
static int	UNKNOWN_LENGTH Represents unknown length.

Constructor Summary

MidiFileFormat(int type, float divisionType, int resolution, int bytes, long microseconds)
Constructs a MidiFileFormat.

Method Summary

int	getByteLength() Obtains the length of the MIDI file, expressed in 8-bit bytes.
float	getDivisionType() Obtains the timing division type for the MIDI file.
long	getMicrosecondLength() Obtains the length of the MIDI file, expressed in microseconds.
int	getResolution() Obtains the timing resolution for the MIDI file.
int	getType() Obtains the MIDI file type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

UNKNOWN_LENGTH

public static final int UNKNOWN_LENGTH

Represents unknown length.

See Also:

getByteLength(), getMicrosecondLength(), Constant Field Values

type

protected int type

The type of MIDI file.

divisionType

protected float divisionType

The division type of the MIDI file.

See Also:

Sequence.PPQ, Sequence.SMPTE_24, Sequence.SMPTE_25, Sequence.SMPTE_30DROP, Sequence.SMPTE_30

resolution

protected int resolution

The timing resolution of the MIDI file.

byteLength

protected int byteLength

The length of the MIDI file in bytes.

microsecondLength

protected long microsecondLength

The duration of the MIDI file in microseconds.

Constructor Detail

MidiFileFormat

public MidiFileFormat(int type,
                      float divisionType,
                      int resolution,
                      int bytes,
                      long microseconds)

Constructs a MidiFileFormat.

Parameters:

type - the MIDI file type (0, 1, or 2)

divisionType - the timing division type (PPQ or one of the SMPTE types)

resolution - the timing resolution

bytes - the length of the MIDI file in bytes, or UNKNOWN_LENGTH if not known

microseconds - the duration of the file in microseconds, or UNKNOWN_LENGTH if not known

See Also:

UNKNOWN_LENGTH, Sequence.PPQ, Sequence.SMPTE_24, Sequence.SMPTE_25, Sequence.SMPTE_30DROP, Sequence.SMPTE_30

Method Detail

getType

public int getType()

Obtains the MIDI file type.

Returns:

the file's type (0, 1, or 2)

getDivisionType

public float getDivisionType()

Obtains the timing division type for the MIDI file.

Returns:

the division type (PPQ or one of the SMPTE types)

See Also:

Sequence.Sequence(float, int), Sequence.PPQ, Sequence.SMPTE_24, Sequence.SMPTE_25, Sequence.SMPTE_30DROP, Sequence.SMPTE_30, Sequence.getDivisionType()

getResolution

public int getResolution()

Obtains the timing resolution for the MIDI file. If the division type is PPQ, the resolution is specified in ticks per beat. For SMTPE timing, the resolution is specified in ticks per frame.

Returns:

the number of ticks per beat (PPQ) or per frame (SMPTE)

See Also:

getDivisionType(), Sequence.getResolution()

getByteLength

public int getByteLength()

Obtains the length of the MIDI file, expressed in 8-bit bytes.

Returns:

the number of bytes in the file, or UNKNOWN_LENGTH if not known

See Also:

UNKNOWN_LENGTH

getMicrosecondLength

public long getMicrosecondLength()

Obtains the length of the MIDI file, expressed in microseconds.

Returns:

the file's duration in microseconds, or UNKNOWN_LENGTH if not known

See Also:

Sequence.getMicrosecondLength(), getByteLength(), UNKNOWN_LENGTH