Class MidiDeviceProvider

java.lang.Object

javax.sound.midi.spi.MidiDeviceProvider

public abstract class MidiDeviceProvider
extends Object

A MidiDeviceProvider is a factory or provider for a particular type of MIDI device. This mechanism allows the implementation to determine how resources are managed in the creation and management of a device.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MidiDeviceProvider()	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
abstract MidiDevice	getDevice(MidiDevice.Info info)	Obtains an instance of the device represented by the info object.
abstract MidiDevice.Info[]	getDeviceInfo()	Obtains the set of info objects representing the device or devices provided by this MidiDeviceProvider.
boolean	isDeviceSupported(MidiDevice.Info info)	Indicates whether the device provider supports the device represented by the specified device info object.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

MidiDeviceProvider

protected MidiDeviceProvider()

Constructor for subclasses to call.

Method Details

isDeviceSupported

public boolean isDeviceSupported(MidiDevice.Info info)

Indicates whether the device provider supports the device represented by the specified device info object.

Parameters:

info - an info object that describes the device for which support is queried

Returns:

true if the specified device is supported, otherwise false

Throws:

NullPointerException - if info is null

getDeviceInfo

public abstract MidiDevice.Info[] getDeviceInfo()

Obtains the set of info objects representing the device or devices provided by this MidiDeviceProvider.

Returns:

set of device info objects

getDevice

public abstract MidiDevice getDevice(MidiDevice.Info info)

Obtains an instance of the device represented by the info object.

Parameters:

info - an info object that describes the desired device

Returns:

device instance

Throws:

IllegalArgumentException - if the info object specified does not match the info object for a device supported by this MidiDeviceProvider

NullPointerException - if info is null