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* accompanied this code).
*
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package javax.sound.sampled;
/**
* Ports are simple lines for input or output of audio to or from audio devices.
* Common examples of ports that act as source lines (mixer inputs) include the
* microphone, line input, and CD-ROM drive. Ports that act as target lines
* (mixer outputs) include the speaker, headphone, and line output. You can
* access port using a {@link Port.Info} object.
*
* @author Kara Kytle
* @since 1.3
*/
public interface Port extends Line {
/**
* The {@code Port.Info} class extends {@code Line.Info} with additional
* information specific to ports, including the port's name and whether it
* is a source or a target for its mixer. By definition, a port acts as
* either a source or a target to its mixer, but not both. (Audio input
* ports are sources; audio output ports are targets.)
* <p>
* To learn what ports are available, you can retrieve port info objects
* through the {@link Mixer#getSourceLineInfo getSourceLineInfo} and
* {@link Mixer#getTargetLineInfo getTargetLineInfo} methods of the
* {@code Mixer} interface. Instances of the {@code Port.Info} class may
* also be constructed and used to obtain lines matching the parameters
* specified in the {@code Port.Info} object.
*
* @author Kara Kytle
* @since 1.3
*/
class Info extends Line.Info {
// AUDIO PORT TYPE DEFINES
// SOURCE PORTS
/**
* A type of port that gets audio from a built-in microphone or a
* microphone jack.
*/
public static final Info MICROPHONE = new Info(Port.class,"MICROPHONE", true);
/**
* A type of port that gets audio from a line-level audio input jack.
*/
public static final Info LINE_IN = new Info(Port.class,"LINE_IN", true);
/**
* A type of port that gets audio from a CD-ROM drive.
*/
public static final Info COMPACT_DISC = new Info(Port.class,"COMPACT_DISC", true);
// TARGET PORTS
/**
* A type of port that sends audio to a built-in speaker or a speaker
* jack.
*/
public static final Info SPEAKER = new Info(Port.class,"SPEAKER", false);
/**
* A type of port that sends audio to a headphone jack.
*/
public static final Info HEADPHONE = new Info(Port.class,"HEADPHONE", false);
/**
* A type of port that sends audio to a line-level audio output jack.
*/
public static final Info LINE_OUT = new Info(Port.class,"LINE_OUT", false);
// FUTURE DIRECTIONS...
// telephone
// DAT
// DVD
/**
* The string that names the port.
*/
private final String name;
/**
* Whether this port is source or not.
*/
private final boolean isSource;
/**
* Constructs a port's info object from the information given. This
* constructor is typically used by an implementation of Java Sound to
* describe a supported line.
*
* @param lineClass the class of the port described by the info object
* @param name the string that names the port
* @param isSource {@code true} if the port is a source port (such as a
* microphone), {@code false} if the port is a target port (such
* as a speaker)
*/
public Info(Class<?> lineClass, String name, boolean isSource) {
super(lineClass);
this.name = name;
this.isSource = isSource;
}
/**
* Obtains the name of the port.
*
* @return the string that names the port
*/
public String getName() {
return name;
}
/**
* Indicates whether the port is a source or a target for its mixer.
*
* @return {@code true} if the port is a source port (such as a
* microphone), {@code false} if the port is a target port (such
* as a speaker)
*/
public boolean isSource() {
return isSource;
}
/**
* Indicates whether this info object specified matches this one. To
* match, the match requirements of the superclass must be met and the
* types must be equal.
*
* @param info the info object for which the match is queried
* @return {@code true} if the specified object matches this one,
* {@code false} otherwise
*/
@Override
public boolean matches(Line.Info info) {
if (! (super.matches(info)) ) {
return false;
}
if (!(name.equals(((Info)info).getName())) ) {
return false;
}
if (! (isSource == ((Info)info).isSource()) ) {
return false;
}
return true;
}
/**
* Indicates whether the specified object is equal to this info object,
* returning {@code true} if the objects are the same.
*
* @param obj the reference object with which to compare
* @return {@code true} if the specified object is equal to this info
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