javax.sound.midi
Class MetaMessage

java.lang.Object
  extended by javax.sound.midi.MidiMessage
      extended by javax.sound.midi.MetaMessage
All Implemented Interfaces:
Cloneable

public class MetaMessage
extends MidiMessage

A system exclusive MIDI message.

Since:
1.3

Field Summary
static int META
          The META status code.
 
Fields inherited from class javax.sound.midi.MidiMessage
data, length
 
Constructor Summary
  MetaMessage()
          Create a default valid meta message.
protected MetaMessage(byte[] data)
          Create a MetaMessage object.
 
Method Summary
 Object clone()
          This method may be called to create a new copy of the Object.
 byte[] getData()
          Get the data for this message, not including the status, type, or length information.
 int getType()
          Get the meta message type.
 void setMessage(int type, byte[] data, int length)
          Set the meta message.
 
Methods inherited from class javax.sound.midi.MidiMessage
getLength, getMessage, getStatus, setMessage
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

META

public static final int META
The META status code. Only valid for MIDI files, not the wire protocol.

See Also:
Constant Field Values
Constructor Detail

MetaMessage

public MetaMessage()
Create a default valid meta message. The official specs don't specify what message is to be created. For now, we create a zero length meta message with a type code of 0.


MetaMessage

protected MetaMessage(byte[] data)
Create a MetaMessage object.

Parameters:
data - a complete system exclusive message
Method Detail

setMessage

public void setMessage(int type,
                       byte[] data,
                       int length)
                throws InvalidMidiDataException
Set the meta message.

Parameters:
type - the meta type byte (< 128)
data - the message data
length - the length of the message data
Throws:
InvalidMidiDataException - if this message is invalid

getType

public int getType()
Get the meta message type.

Returns:
the meta message type

getData

public byte[] getData()
Get the data for this message, not including the status, type, or length information.

Returns:
the message data, not including status, type or lenght info

clone

public Object clone()
Description copied from class: Object
This method may be called to create a new copy of the Object. The typical behavior is as follows:

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object).

If the Object you call clone() on does not implement Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

Specified by:
clone in class MidiMessage
Returns:
a copy of the Object
See Also:
Cloneable