Module java.desktop

Package javax.sound.sampled.spi

Class MixerProvider

java.lang.Object

javax.sound.sampled.spi.MixerProvider

public abstract class MixerProvider
extends Object

A provider or factory for a particular mixer type. This mechanism allows the implementation to determine how resources are managed in creation / management of a mixer.

Since:

1.3

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
abstract Mixer	getMixer(Mixer.Info info)	Obtains an instance of the mixer represented by the info object.
abstract Mixer.Info[]	getMixerInfo()	Obtains the set of info objects representing the mixer or mixers provided by this MixerProvider.
boolean	isMixerSupported(Mixer.Info info)	Indicates whether the mixer provider supports the mixer represented by the specified mixer info object.

Methods declared in class java.lang.Object

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

Constructor Details

MixerProvider

protected MixerProvider()

Constructor for subclasses to call.

Method Details

isMixerSupported

public boolean isMixerSupported(Mixer.Info info)

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

The full set of mixer info objects that represent the mixers supported by this MixerProvider may be obtained through the getMixerInfo method.

Parameters:

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

Returns:

true if the specified mixer is supported, otherwise false

Throws:

NullPointerException - if info is null

See Also:

• getMixerInfo()

getMixerInfo

public abstract Mixer.Info[] getMixerInfo()

Obtains the set of info objects representing the mixer or mixers provided by this MixerProvider.

The isMixerSupported method returns true for all the info objects returned by this method. The corresponding mixer instances for the info objects are returned by the getMixer method.

Returns:

a set of mixer info objects

See Also:

• getMixer(Mixer.Info)
• isMixerSupported(Mixer.Info)

getMixer

public abstract Mixer getMixer(Mixer.Info info)

Obtains an instance of the mixer represented by the info object. If null is passed, then the default mixer will be returned.

The full set of the mixer info objects that represent the mixers supported by this MixerProvider may be obtained through the getMixerInfo method. Use the isMixerSupported method to test whether this MixerProvider supports a particular mixer.

Parameters:

info - an info object that describes the desired mixer, or null for the default mixer

Returns:

mixer instance

Throws:

IllegalArgumentException - if the info object specified does not match the info object for a mixer supported by this MixerProvider, or if this MixerProvider does not have default mixer, but default mixer has been requested

See Also:

• getMixerInfo()
• isMixerSupported(Mixer.Info)