javax.sound.midi.ShortMessage

All Implemented Interfaces:: Cloneable

public class ShortMessage
extends MidiMessage

A ShortMessage contains a MIDI message that has at most two data bytes following its status byte. The types of MIDI message that satisfy this criterion are channel voice, channel mode, system common, and system real-time--in other words, everything except system exclusive and meta-events. The ShortMessage class provides methods for getting and setting the contents of the MIDI message.

A number of ShortMessage methods have integer parameters by which you specify a MIDI status or data byte. If you know the numeric value, you can express it directly. For system common and system real-time messages, you can often use the corresponding fields of ShortMessage, such as SYSTEM_RESET. For channel messages, the upper four bits of the status byte are specified by a command value and the lower four bits are specified by a MIDI channel number. To convert incoming MIDI data bytes that are in the form of Java's signed bytes, you can use the conversion code given in the MidiMessage class description.

See Also:: SysexMessage, MetaMessage

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ACTIVE_SENSING`	Status byte for Active Sensing message (0xFE, or 254).
`static int`	`CHANNEL_PRESSURE`	Command value for Channel Pressure (Aftertouch) message (0xD0, or 208).
`static int`	`CONTINUE`	Status byte for Continue message (0xFB, or 251).
`static int`	`CONTROL_CHANGE`	Command value for Control Change message (0xB0, or 176).
`static int`	`END_OF_EXCLUSIVE`	Status byte for End of System Exclusive message (0xF7, or 247).
`static int`	`MIDI_TIME_CODE`	Status byte for MIDI Time Code Quarter Frame message (0xF1, or 241).
`static int`	`NOTE_OFF`	Command value for Note Off message (0x80, or 128).
`static int`	`NOTE_ON`	Command value for Note On message (0x90, or 144).
`static int`	`PITCH_BEND`	Command value for Pitch Bend message (0xE0, or 224).
`static int`	`POLY_PRESSURE`	Command value for Polyphonic Key Pressure (Aftertouch) message (0xA0, or 160).
`static int`	`PROGRAM_CHANGE`	Command value for Program Change message (0xC0, or 192).
`static int`	`SONG_POSITION_POINTER`	Status byte for Song Position Pointer message (0xF2, or 242).
`static int`	`SONG_SELECT`	Status byte for MIDI Song Select message (0xF3, or 243).
`static int`	`START`	Status byte for Start message (0xFA, or 250).
`static int`	`STOP`	Status byte for Stop message (0xFC, or 252).
`static int`	`SYSTEM_RESET`	Status byte for System Reset message (0xFF, or 255).
`static int`	`TIMING_CLOCK`	Status byte for Timing Clock message (0xF8, or 248).
`static int`	`TUNE_REQUEST`	Status byte for Tune Request message (0xF6, or 246).

Fields declared in class javax.sound.midi.MidiMessage

data, length

Constructor Summary

Constructors
Modifier	Constructor	Description
	`ShortMessage()`	Constructs a new `ShortMessage`.
`protected`	`ShortMessage(byte[] data)`	Constructs a new `ShortMessage`.
	`ShortMessage(int status)`	Constructs a new `ShortMessage` which represents a MIDI message that takes no data bytes.
	`ShortMessage(int status, int data1, int data2)`	Constructs a new `ShortMessage` which represents a MIDI message that takes up to two data bytes.
	`ShortMessage(int command, int channel, int data1, int data2)`	Constructs a new `ShortMessage` which represents a channel MIDI message that takes up to two data bytes.

Method Summary

Modifier and Type	Method	Description
`Object`	`clone()`	Creates a new object of the same class and with the same contents as this object.
`int`	`getChannel()`	Obtains the MIDI channel associated with this event.
`int`	`getCommand()`	Obtains the MIDI command associated with this event.
`int`	`getData1()`	Obtains the first data byte in the message.
`int`	`getData2()`	Obtains the second data byte in the message.
`protected int`	`getDataLength(int status)`	Retrieves the number of data bytes associated with a particular status byte value.
`void`	`setMessage(int status)`	Sets the parameters for a MIDI message that takes no data bytes.
`void`	`setMessage(int status, int data1, int data2)`	Sets the parameters for a MIDI message that takes one or two data bytes.
`void`	`setMessage(int command, int channel, int data1, int data2)`	Sets the short message parameters for a channel message which takes up to two data bytes.

Methods declared in class javax.sound.midi.MidiMessage

getLength, getMessage, getStatus, setMessage

Methods declared in class java.lang.Object

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

Field Details
- MIDI_TIME_CODE
  
  public static final int MIDI_TIME_CODE
  
  Status byte for MIDI Time Code Quarter Frame message (0xF1, or 241).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- SONG_POSITION_POINTER
  
  public static final int SONG_POSITION_POINTER
  
  Status byte for Song Position Pointer message (0xF2, or 242).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- SONG_SELECT
  
  public static final int SONG_SELECT
  
  Status byte for MIDI Song Select message (0xF3, or 243).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- TUNE_REQUEST
  
  public static final int TUNE_REQUEST
  
  Status byte for Tune Request message (0xF6, or 246).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- END_OF_EXCLUSIVE
  
  public static final int END_OF_EXCLUSIVE
  
  Status byte for End of System Exclusive message (0xF7, or 247).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- TIMING_CLOCK
  
  public static final int TIMING_CLOCK
  
  Status byte for Timing Clock message (0xF8, or 248).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- START
  
  public static final int START
  
  Status byte for Start message (0xFA, or 250).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- CONTINUE
  
  public static final int CONTINUE
  
  Status byte for Continue message (0xFB, or 251).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- STOP
  
  public static final int STOP
  
  Status byte for Stop message (0xFC, or 252).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- ACTIVE_SENSING
  
  public static final int ACTIVE_SENSING
  
  Status byte for Active Sensing message (0xFE, or 254).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- SYSTEM_RESET
  
  public static final int SYSTEM_RESET
  
  Status byte for System Reset message (0xFF, or 255).
  
  See Also:
  
  MidiMessage.getStatus(), Constant Field Values
- NOTE_OFF
  
  public static final int NOTE_OFF
  
  Command value for Note Off message (0x80, or 128).
  
  See Also:
  
  Constant Field Values
- NOTE_ON
  
  public static final int NOTE_ON
  
  Command value for Note On message (0x90, or 144).
  
  See Also:
  
  Constant Field Values
- POLY_PRESSURE
  
  public static final int POLY_PRESSURE
  
  Command value for Polyphonic Key Pressure (Aftertouch) message (0xA0, or 160).
  
  See Also:
  
  Constant Field Values
- CONTROL_CHANGE
  
  public static final int CONTROL_CHANGE
  
  Command value for Control Change message (0xB0, or 176).
  
  See Also:
  
  Constant Field Values
- PROGRAM_CHANGE
  
  public static final int PROGRAM_CHANGE
  
  Command value for Program Change message (0xC0, or 192).
  
  See Also:
  
  Constant Field Values
- CHANNEL_PRESSURE
  
  public static final int CHANNEL_PRESSURE
  
  Command value for Channel Pressure (Aftertouch) message (0xD0, or 208).
  
  See Also:
  
  Constant Field Values
- PITCH_BEND
  
  public static final int PITCH_BEND
  
  Command value for Pitch Bend message (0xE0, or 224).
  
  See Also:
  
  Constant Field Values
Constructor Details
- ShortMessage
  
  public ShortMessage()
  
  Constructs a new ShortMessage. The contents of the new message are guaranteed to specify a valid MIDI message. Subsequently, you may set the contents of the message using one of the setMessage methods.
  
  See Also:
  
  setMessage(int)
- ShortMessage
  
  public ShortMessage(int status) throws InvalidMidiDataException
  
  Constructs a new ShortMessage which represents a MIDI message that takes no data bytes. The contents of the message can be changed by using one of the setMessage methods.
  
  Parameters:
  
  status - the MIDI status byte
  
  Throws:
  
  InvalidMidiDataException - if status does not specify a valid MIDI status byte for a message that requires no data bytes
  
  Since:
  
  1.7
  
  See Also:
  
  setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), MidiMessage.getStatus()
- ShortMessage
  
  public ShortMessage(int status, int data1, int data2) throws InvalidMidiDataException
  
  Constructs a new ShortMessage which represents a MIDI message that takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored. If the message does not take any data bytes, both data bytes are ignored. The contents of the message can be changed by using one of the setMessage methods.
  
  Parameters:
  
  status - the MIDI status byte
  
  data1 - the first data byte
  
  data2 - the second data byte
  
  Throws:
  
  InvalidMidiDataException - if the status byte or all data bytes belonging to the message do not specify a valid MIDI message
  
  Since:
  
  1.7
  
  See Also:
  
  setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), MidiMessage.getStatus(), getData1(), getData2()
- ShortMessage
  
  public ShortMessage(int command, int channel, int data1, int data2) throws InvalidMidiDataException
  
  Constructs a new ShortMessage which represents a channel MIDI message that takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored. If the message does not take any data bytes, both data bytes are ignored. The contents of the message can be changed by using one of the setMessage methods.
  
  Parameters:
  
  command - the MIDI command represented by this message
  
  channel - the channel associated with the message
  
  data1 - the first data byte
  
  data2 - the second data byte
  
  Throws:
  
  InvalidMidiDataException - if the command value, channel value or all data bytes belonging to the message do not specify a valid MIDI message
  
  Since:
  
  1.7
  
  See Also:
  
  setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), getCommand(), getChannel(), getData1(), getData2()
- ShortMessage
  
  protected ShortMessage(byte[] data)
  
  Constructs a new ShortMessage.
  
  Parameters:
  
  data - an array of bytes containing the complete message. The message data may be changed using the setMessage method.
  
  See Also:
  
  setMessage(int)
Method Details
- setMessage
  
  public void setMessage(int status) throws InvalidMidiDataException
  
  Sets the parameters for a MIDI message that takes no data bytes.
  
  Parameters:
  
  status - the MIDI status byte
  
  Throws:
  
  InvalidMidiDataException - if status does not specify a valid MIDI status byte for a message that requires no data bytes
  
  See Also:
  
  setMessage(int, int, int), setMessage(int, int, int, int)
- setMessage
  
  public void setMessage(int status, int data1, int data2) throws InvalidMidiDataException
  
  Sets the parameters for a MIDI message that takes one or two data bytes. If the message takes only one data byte, the second data byte is ignored; if the message does not take any data bytes, both data bytes are ignored.
  
  Parameters:
  
  status - the MIDI status byte
  
  data1 - the first data byte
  
  data2 - the second data byte
  
  Throws:
  
  InvalidMidiDataException - if the status byte, or all data bytes belonging to the message, do not specify a valid MIDI message
  
  See Also:
  
  setMessage(int, int, int, int), setMessage(int)
- setMessage
  
  public void setMessage(int command, int channel, int data1, int data2) throws InvalidMidiDataException
  
  Sets the short message parameters for a channel message which takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored; if the message does not take any data bytes, both data bytes are ignored.
  
  Parameters:
  
  command - the MIDI command represented by this message
  
  channel - the channel associated with the message
  
  data1 - the first data byte
  
  data2 - the second data byte
  
  Throws:
  
  InvalidMidiDataException - if the status byte or all data bytes belonging to the message, do not specify a valid MIDI message
  
  See Also:
  
  setMessage(int, int, int), setMessage(int), getCommand(), getChannel(), getData1(), getData2()
- getChannel
  
  public int getChannel()
  
  Obtains the MIDI channel associated with this event. This method assumes that the event is a MIDI channel message; if not, the return value will not be meaningful.
  
  Returns:
  
  MIDI channel associated with the message
  
  See Also:
  
  setMessage(int, int, int, int)
- getCommand
  
  public int getCommand()
  
  Obtains the MIDI command associated with this event. This method assumes that the event is a MIDI channel message; if not, the return value will not be meaningful.
  
  Returns:
  
  the MIDI command associated with this event
  
  See Also:
  
  setMessage(int, int, int, int)
- getData1
  
  public int getData1()
  
  Obtains the first data byte in the message.
  
  Returns:
  
  the value of the data1 field
  
  See Also:
  
  setMessage(int, int, int)
- getData2
  
  public int getData2()
  
  Obtains the second data byte in the message.
  
  Returns:
  
  the value of the data2 field
  
  See Also:
  
  setMessage(int, int, int)
- clone
  
  public Object clone()
  
  Creates a new object of the same class and with the same contents as this object.
  
  Specified by:
  
  clone in class MidiMessage
  
  Returns:
  
  a clone of this instance
  
  See Also:
  
  Cloneable
- getDataLength
  
  protected final int getDataLength(int status) throws InvalidMidiDataException
  
  Retrieves the number of data bytes associated with a particular status byte value.
  
  Parameters:
  
  status - status byte value, which must represent a short MIDI message
  
  Returns:
  
  data length in bytes (0, 1, or 2)
  
  Throws:
  
  InvalidMidiDataException - if the status argument does not represent the status byte for any short message

Class ShortMessage

Field Summary

Fields declared in class javax.sound.midi.MidiMessage

Constructor Summary

Method Summary

Methods declared in class javax.sound.midi.MidiMessage

Methods declared in class java.lang.Object

Field Details

Constructor Details

Method Details