public final class MidiInputPort extends MidiReceiver implements Closeable
Modifier and Type | Method and Description |
---|---|
void |
close()
Closes this stream and releases any system resources associated
with it.
|
protected void |
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
int |
getPortNumber()
Returns the port number of this port
|
void |
onFlush()
Called when the receiver is instructed to discard all pending MIDI data.
|
void |
onSend(byte[] msg,
int offset,
int count,
long timestamp)
Called whenever the receiver is passed new MIDI data.
|
flush, getMaxMessageSize, send, send
public final int getPortNumber()
public void onSend(byte[] msg, int offset, int count, long timestamp) throws IOException
MidiReceiver
MidiReceiver.getMaxMessageSize()
.
NOTE: the msg array parameter is only valid within the context of this call.
The msg bytes should be copied by the receiver rather than retaining a reference
to this parameter.
Also, modifying the contents of the msg array parameter may result in other receivers
in the same application receiving incorrect values in their {link #onSend} method.onSend
in class MidiReceiver
msg
- a byte array containing the MIDI dataoffset
- the offset of the first byte of the data in the array to be processedcount
- the number of bytes of MIDI data in the array to be processedtimestamp
- the timestamp of the message (based on System.nanoTime()
IOException
public void onFlush() throws IOException
MidiReceiver
onFlush
in class MidiReceiver
IOException
public void close() throws IOException
Closeable
close
in interface Closeable
close
in interface AutoCloseable
IOException
- if an I/O error occursprotected void finalize() throws Throwable
Object
finalize
method to dispose of
system resources or to perform other cleanup.
The general contract of finalize
is that it is invoked
if and when the JavaTM virtual
machine has determined that there is no longer any
means by which this object can be accessed by any thread that has
not yet died, except as a result of an action taken by the
finalization of some other object or class which is ready to be
finalized. The finalize
method may take any action, including
making this object available again to other threads; the usual purpose
of finalize
, however, is to perform cleanup actions before
the object is irrevocably discarded. For example, the finalize method
for an object that represents an input/output connection might perform
explicit I/O transactions to break the connection before the object is
permanently discarded.
The finalize
method of class Object
performs no
special action; it simply returns normally. Subclasses of
Object
may override this definition.
The Java programming language does not guarantee which thread will
invoke the finalize
method for any given object. It is
guaranteed, however, that the thread that invokes finalize will not
be holding any user-visible synchronization locks when finalize is
invoked. If an uncaught exception is thrown by the finalize method,
the exception is ignored and finalization of that object terminates.
After the finalize
method has been invoked for an object, no
further action is taken until the Java virtual machine has again
determined that there is no longer any means by which this object can
be accessed by any thread that has not yet died, including possible
actions by other objects or classes which are ready to be finalized,
at which point the object may be discarded.
The finalize
method is never invoked more than once by a Java
virtual machine for any given object.
Any exception thrown by the finalize
method causes
the finalization of this object to be halted, but is otherwise
ignored.