Added in API level 32

Summary: Nested Classes | Constants | Methods | Inherited Methods

Spatializer

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Kotlin |Java

public class Spatializer
extends Object

java.lang.Object
↳	android.media.Spatializer

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Spatializer provides access to querying capabilities and behavior of sound spatialization on the device. Sound spatialization simulates sounds originating around the listener as if they were coming from virtual speakers placed around the listener.
Support for spatialization is optional, use AudioManager.getSpatializer() to obtain an instance of this class if the feature is supported.

Summary

Nested classes
interface	Spatializer.OnHeadTrackerAvailableListener Interface to be notified of changes to the availability of a head tracker on the audio device to be used by the spatializer effect.
interface	Spatializer.OnSpatializerStateChangedListener An interface to be notified of changes to the state of the spatializer effect.

Constants
int	SPATIALIZER_IMMERSIVE_LEVEL_MULTICHANNEL Constant indicating the Spatializer on this device supports multichannel spatialization.
int	SPATIALIZER_IMMERSIVE_LEVEL_NONE Constant indicating there are no spatialization capabilities supported on this device.
int	SPATIALIZER_IMMERSIVE_LEVEL_OTHER Constant indicating the Spatializer on this device supports a spatialization mode that differs from the ones available at this SDK level.

Public methods
void	addOnHeadTrackerAvailableListener(Executor executor, Spatializer.OnHeadTrackerAvailableListener listener) Adds a listener to be notified of changes to the availability of a head tracker.
void	addOnSpatializerStateChangedListener(Executor executor, Spatializer.OnSpatializerStateChangedListener listener) Adds a listener to be notified of changes to the enabled state of the Spatializer.
boolean	canBeSpatialized(AudioAttributes attributes, AudioFormat format) Returns whether audio of the given AudioFormat, played with the given AudioAttributes can be spatialized.
int	getImmersiveAudioLevel() Return the level of support for the spatialization feature on this device.
boolean	isAvailable() Returns whether spatialization is available.
boolean	isEnabled() Returns whether spatialization is enabled or not.
boolean	isHeadTrackerAvailable() Returns whether a head tracker is currently available for the audio device used by the spatializer effect.
void	removeOnHeadTrackerAvailableListener(Spatializer.OnHeadTrackerAvailableListener listener) Removes a previously registered listener for the availability of a head tracker.
void	removeOnSpatializerStateChangedListener(Spatializer.OnSpatializerStateChangedListener listener) Removes a previously added listener for changes to the enabled state of the Spatializer.

Inherited methods

From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait(long timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Constants

SPATIALIZER_IMMERSIVE_LEVEL_MULTICHANNEL

Added in API level 32

public static final int SPATIALIZER_IMMERSIVE_LEVEL_MULTICHANNEL

Constant indicating the Spatializer on this device supports multichannel spatialization.

See also:

• getImmersiveAudioLevel()

Constant Value: 1 (0x00000001)

SPATIALIZER_IMMERSIVE_LEVEL_NONE

Added in API level 32

public static final int SPATIALIZER_IMMERSIVE_LEVEL_NONE

Constant indicating there are no spatialization capabilities supported on this device.

See also:

• getImmersiveAudioLevel()

Constant Value: 0 (0x00000000)

SPATIALIZER_IMMERSIVE_LEVEL_OTHER

Added in API level 32

public static final int SPATIALIZER_IMMERSIVE_LEVEL_OTHER

Constant indicating the Spatializer on this device supports a spatialization mode that differs from the ones available at this SDK level.

See also:

• getImmersiveAudioLevel()

Constant Value: -1 (0xffffffff)

Public methods

addOnHeadTrackerAvailableListener

Added in API level 33

public void addOnHeadTrackerAvailableListener (Executor executor, 
                Spatializer.OnHeadTrackerAvailableListener listener)

Adds a listener to be notified of changes to the availability of a head tracker.

Parameters
executor	Executor: the Executor handling the callback This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
listener	Spatializer.OnHeadTrackerAvailableListener: the listener to receive availability updates This value cannot be null.

See also:

• removeOnHeadTrackerAvailableListener(OnHeadTrackerAvailableListener)

addOnSpatializerStateChangedListener

Added in API level 32

public void addOnSpatializerStateChangedListener (Executor executor, 
                Spatializer.OnSpatializerStateChangedListener listener)

Adds a listener to be notified of changes to the enabled state of the Spatializer.

Parameters
executor	Executor: the Executor handling the callback This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
listener	Spatializer.OnSpatializerStateChangedListener: the listener to receive enabled state updates This value cannot be null.

See also:

• isEnabled()

canBeSpatialized

Added in API level 32

public boolean canBeSpatialized (AudioAttributes attributes, 
                AudioFormat format)

Returns whether audio of the given AudioFormat, played with the given AudioAttributes can be spatialized. Note that the result reflects the capabilities of the device and may change when audio accessories are connected/disconnected (e.g. wired headphones plugged in or not). The result is independent from whether spatialization processing is enabled or not.

Parameters
attributes	AudioAttributes: the AudioAttributes of the content as used for playback This value cannot be null.
format	AudioFormat: the AudioFormat of the content as used for playback This value cannot be null.

Returns
boolean	true if the device is capable of spatializing the combination of audio format and attributes, false otherwise.

getImmersiveAudioLevel

Added in API level 32

public int getImmersiveAudioLevel ()

Return the level of support for the spatialization feature on this device. This level of support is independent of whether the Spatializer is currently enabled or available and will not change over time.

Returns
int	the level of spatialization support Value is SPATIALIZER_IMMERSIVE_LEVEL_OTHER, SPATIALIZER_IMMERSIVE_LEVEL_NONE, or SPATIALIZER_IMMERSIVE_LEVEL_MULTICHANNEL

See also:

• isEnabled()
• isAvailable()

isAvailable

Added in API level 32

public boolean isAvailable ()

Returns whether spatialization is available. Reasons for spatialization being unavailable include situations where audio output is incompatible with sound spatialization, such as playback on a monophonic speaker.
Note that spatialization can be available, but disabled by the user, in which case this method would still return true, whereas isEnabled() would return false.
Also when the feature is not supported on the device (indicated by getImmersiveAudioLevel() returning SPATIALIZER_IMMERSIVE_LEVEL_NONE), the return value will be false.

Returns
boolean	true if the spatializer effect is available and capable of processing the audio for the current configuration of the device, false otherwise.

See also:

• isEnabled()

isEnabled

Added in API level 32

public boolean isEnabled ()

Returns whether spatialization is enabled or not. A false value can originate for instance from the user electing to disable the feature, or when the feature is not supported on the device (indicated by getImmersiveAudioLevel() returning SPATIALIZER_IMMERSIVE_LEVEL_NONE).
Note that this state reflects a platform-wide state of the "desire" to use spatialization, but availability of the audio processing is still dictated by the compatibility between the effect and the hardware configuration, as indicated by isAvailable().

Returns
boolean	true if spatialization is enabled

See also:

• isAvailable()

isHeadTrackerAvailable

Added in API level 33

public boolean isHeadTrackerAvailable ()

Returns whether a head tracker is currently available for the audio device used by the spatializer effect.

Returns
boolean	true if a head tracker is available and the effect is enabled, false otherwise.

See also:

• Spatializer.OnHeadTrackerAvailableListener
• addOnHeadTrackerAvailableListener(Executor, OnHeadTrackerAvailableListener)

removeOnHeadTrackerAvailableListener

Added in API level 33

public void removeOnHeadTrackerAvailableListener (Spatializer.OnHeadTrackerAvailableListener listener)

Removes a previously registered listener for the availability of a head tracker.

Parameters
listener	Spatializer.OnHeadTrackerAvailableListener: the listener previously registered with addOnHeadTrackerAvailableListener(java.util.concurrent.Executor, android.media.Spatializer.OnHeadTrackerAvailableListener) This value cannot be null.

removeOnSpatializerStateChangedListener

Added in API level 32

public void removeOnSpatializerStateChangedListener (Spatializer.OnSpatializerStateChangedListener listener)

Removes a previously added listener for changes to the enabled state of the Spatializer.

Parameters
listener	Spatializer.OnSpatializerStateChangedListener: the listener to receive enabled state updates This value cannot be null.

See also:

• isEnabled()