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package javax.sound.midi;


A Receiver receives MidiEvent objects and typically does something useful in response, such as interpreting them to generate sound or raw MIDI output. Common MIDI receivers include synthesizers and MIDI Out ports. 
Author:Kara Kytle
See Also:
/**
 * A {@code Receiver} receives {@link MidiEvent} objects and typically does
 * something useful in response, such as interpreting them to generate sound or
 * raw MIDI output. Common MIDI receivers include synthesizers and MIDI Out
 * ports.
 *
 * @author Kara Kytle
 * @see MidiDevice
 * @see Synthesizer
 * @see Transmitter
 */
public interface Receiver extends AutoCloseable {

    //$$fb 2002-04-12: fix for 4662090: Contradiction in Receiver specification

    
Sends a MIDI message and time-stamp to this receiver. If time-stamping is
not supported by this receiver, the time-stamp value should be -1.

Params:
  • message – the MIDI message to send
  • timeStamp – the time-stamp for the message, in microseconds
Throws:
/**
     * Sends a MIDI message and time-stamp to this receiver. If time-stamping is
     * not supported by this receiver, the time-stamp value should be -1.
     *
     * @param  message the MIDI message to send
     * @param  timeStamp the time-stamp for the message, in microseconds
     * @throws IllegalStateException if the receiver is closed
     */
    void send(MidiMessage message, long timeStamp);

    
Indicates that the application has finished using the receiver, and that
limited resources it requires may be released or made available.

 If the creation of this Receiver resulted in implicitly opening the underlying device, the device is implicitly closed by this method. This is true unless the device is kept open by other Receiver or Transmitter instances that opened the device implicitly, and unless the device has been opened explicitly. If the device this Receiver is retrieved from is closed explicitly by calling MidiDevice.close, the Receiver is closed, too. For a detailed description of open/close behaviour see the class description of MidiDevice. 
See Also:
/**
     * Indicates that the application has finished using the receiver, and that
     * limited resources it requires may be released or made available.
     * <p>
     * If the creation of this {@code Receiver} resulted in implicitly opening
     * the underlying device, the device is implicitly closed by this method.
     * This is true unless the device is kept open by other {@code Receiver} or
     * {@code Transmitter} instances that opened the device implicitly, and
     * unless the device has been opened explicitly. If the device this
     * {@code Receiver} is retrieved from is closed explicitly by calling
     * {@link MidiDevice#close MidiDevice.close}, the {@code Receiver} is
     * closed, too. For a detailed description of open/close behaviour see the
     * class description of {@link MidiDevice MidiDevice}.
     *
     * @see MidiSystem#getReceiver
     */
    @Override
    void close();
}