Added in API level 35

Summary: Nested Classes | Methods | Inherited Methods

LoudnessCodecController

Kotlin |Java

public class LoudnessCodecController
extends Object implements AutoCloseable

java.lang.Object
↳	android.media.LoudnessCodecController

Class for getting recommended loudness parameter updates for audio decoders as they are used to play back media content according to the encoded format and current audio routing. These audio decoder updates leverage loudness metadata present in compressed audio streams. They ensure the loudness and dynamic range of the content is optimized to the physical characteristics of the audio output device (e.g. phone microspeakers vs headphones vs TV speakers).Those updates can be automatically applied to the MediaCodec instance(s), or be provided to the user. The codec loudness management parameter updates are computed in accordance to the CTA-2075 standard.

A new object should be instantiated for each audio session (see AudioManager#generateAudioSessionId()) using creator methods create(int) or create(int, java.util.concurrent.Executor, android.media.LoudnessCodecController.OnLoudnessCodecUpdateListener).

Summary

Nested classes
`interface`	`LoudnessCodecController.OnLoudnessCodecUpdateListener` Listener used for receiving asynchronous loudness metadata updates.

Public methods
`boolean`	`addMediaCodec(MediaCodec mediaCodec)` Adds a new `MediaCodec` that will stream data to a player which uses `ERROR(/#mSessionId)`.
`void`	`close()` Stops any loudness updates and frees up the resources.
`static LoudnessCodecController`	`create(int sessionId, Executor executor, LoudnessCodecController.OnLoudnessCodecUpdateListener listener)` Creates a new instance of `LoudnessCodecController` This method should be used when the client wants to alter the codec loudness parameters before they are applied to the audio decoders.
`static LoudnessCodecController`	`create(int sessionId)` Creates a new instance of `LoudnessCodecController` This method should be used when the client does not need to alter the codec loudness parameters before they are applied to the audio decoders.
`Bundle`	`getLoudnessCodecParams(MediaCodec mediaCodec)` Returns the loudness parameters of the registered audio decoders Those parameters may have been automatically applied if the `LoudnessCodecController` was created with `create(int)`, or they are the parameters that have been sent to the `OnLoudnessCodecUpdateListener` if using a codec update listener.
`void`	`removeMediaCodec(MediaCodec mediaCodec)` Removes the `MediaCodec` from receiving loudness updates.

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.

From interface


        
          java.lang.AutoCloseable


      close()

Closes this resource, relinquishing any underlying resources.

Public methods

addMediaCodec

Added in API level 35

public boolean addMediaCodec (MediaCodec mediaCodec)

Adds a new MediaCodec that will stream data to a player which uses ERROR(/#mSessionId).

No new element will be added if the passed mediaCodec was previously added.

Parameters
`mediaCodec`	`MediaCodec`: the codec to start receiving asynchronous loudness updates. The codec has to be in a configured or started state in order to add it for loudness updates.

Returns
`boolean`	`false` if the `mediaCodec` was not configured or does not contain loudness metadata, `true` otherwise.

Throws
`IllegalArgumentException`	if the same `mediaCodec` was already added before.

close

Added in API level 35

public void close ()

Stops any loudness updates and frees up the resources.

create

Added in API level 35

public static LoudnessCodecController create (int sessionId, 
                Executor executor, 
                LoudnessCodecController.OnLoudnessCodecUpdateListener listener)

Creates a new instance of LoudnessCodecController

This method should be used when the client wants to alter the codec loudness parameters before they are applied to the audio decoders. Otherwise, use create(int).

Parameters
`sessionId`	`int`: the session ID of the track that will receive data from the added `MediaCodec`'s
`executor`	`Executor`: `Executor` to handle the callbacks 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`	`LoudnessCodecController.OnLoudnessCodecUpdateListener`: used for receiving updates

Returns
`LoudnessCodecController`	the `LoudnessCodecController` instance

create

Added in API level 35

public static LoudnessCodecController create (int sessionId)

Creates a new instance of LoudnessCodecController

This method should be used when the client does not need to alter the codec loudness parameters before they are applied to the audio decoders. Otherwise, use create(int, java.util.concurrent.Executor, android.media.LoudnessCodecController.OnLoudnessCodecUpdateListener).

Parameters
`sessionId`	`int`: the session ID of the track that will receive data from the added `MediaCodec`'s

Returns
`LoudnessCodecController`	the `LoudnessCodecController` instance

getLoudnessCodecParams

Added in API level 35

public Bundle getLoudnessCodecParams (MediaCodec mediaCodec)

Returns the loudness parameters of the registered audio decoders

Those parameters may have been automatically applied if the LoudnessCodecController was created with create(int), or they are the parameters that have been sent to the OnLoudnessCodecUpdateListener if using a codec update listener.

Parameters
`mediaCodec`	`MediaCodec`: codec that decodes loudness annotated data. Has to be added with `addMediaCodec(android.media.MediaCodec)` before calling this method

Returns
`Bundle`	the `Bundle` containing the current loudness parameters.

Throws
`IllegalArgumentException`	if the passed `MediaCodec` was not added before calling this method

removeMediaCodec

Added in API level 35

public void removeMediaCodec (MediaCodec mediaCodec)

Removes the MediaCodec from receiving loudness updates.

This method can be called while asynchronous updates are live.

No elements will be removed if the passed mediaCodec was not added before.

Parameters
`mediaCodec`	`MediaCodec`: the element to remove for receiving asynchronous updates

Throws
`IllegalArgumentException`	if the `mediaCodec` was not configured, does not contain loudness metadata or if it was not added before

LoudnessCodecController

Summary

Nested classes

Public methods

Inherited methods

Public methods

addMediaCodec

close

create

create

getLoudnessCodecParams

removeMediaCodec