Added in API level 24

Summary: Inherited Constants | Fields | Methods | Inherited Methods

AudioRecordingConfiguration

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Kotlin |Java

public final class AudioRecordingConfiguration
extends Object implements Parcelable

java.lang.Object
↳	android.media.AudioRecordingConfiguration

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The AudioRecordingConfiguration class collects the information describing an audio recording session.

Direct polling (see AudioManager#getActiveRecordingConfigurations()) or callback (see AudioManager#registerAudioRecordingCallback(android.media.AudioManager.AudioRecordingCallback, android.os.Handler) methods are ways to receive information about the current recording configuration of the device.

An audio recording configuration contains information about the recording format as used by the application (getClientFormat(), as well as the recording format actually used by the device (getFormat()). The two recording formats may, for instance, be at different sampling rates due to hardware limitations (e.g. application recording at 44.1kHz whereas the device always records at 48kHz, and the Android framework resamples for the application).

The configuration also contains the use case for which audio is recorded (getClientAudioSource()), enabling the ability to distinguish between different activities such as ongoing voice recognition or camcorder recording.

Summary

Inherited constants

From interface android.os.Parcelable int CONTENTS_FILE_DESCRIPTOR Descriptor bit used with describeContents(): indicates that the Parcelable object's flattened representation includes a file descriptor. int PARCELABLE_WRITE_RETURN_VALUE Flag for use with writeToParcel(Parcel, int): the object being written is a return value, that is the result of a function such as "Parcelable someFunction()", "void someFunction(out Parcelable)", or "void someFunction(inout Parcelable)".

Fields
public static final Creator<AudioRecordingConfiguration>	CREATOR

Public methods
int	describeContents() Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
boolean	equals(Object o) Indicates whether some other object is "equal to" this one.
AudioDeviceInfo	getAudioDevice() Returns information about the audio input device used for this recording.
int	getAudioSource() Returns the audio source currently used to configure the capture path.
int	getClientAudioSessionId() Returns the session number of the recording, see AudioRecord#getAudioSessionId().
int	getClientAudioSource() Returns the audio source selected by the client.
List<AudioEffect.Descriptor>	getClientEffects() Returns the list of AudioEffect.Descriptor for all effects currently enabled on the audio capture client (e.g.
AudioFormat	getClientFormat() Returns the audio format at which the client application is recording audio.
List<AudioEffect.Descriptor>	getEffects() Returns the list of AudioEffect.Descriptor for all effects currently enabled on the capture stream.
AudioFormat	getFormat() Returns the audio format at which audio is recorded on this Android device.
int	hashCode() Returns a hash code value for the object.
boolean	isClientSilenced() Returns true if the audio returned to the client is currently being silenced by the audio framework due to concurrent capture policy (e.g the capturing application does not have an active foreground process or service anymore).
void	writeToParcel(Parcel dest, int flags) Flatten this object in to a Parcel.

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 android.os.Parcelable abstract int describeContents() Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. abstract void writeToParcel(Parcel dest, int flags) Flatten this object in to a Parcel.

Fields

CREATOR

Added in API level 24

public static final Creator<AudioRecordingConfiguration> CREATOR

Public methods

describeContents

Added in API level 24

public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(android.os.Parcel, int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Returns
int	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either 0 or CONTENTS_FILE_DESCRIPTOR

equals

Added in API level 24

public boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

• It is reflexive: for any non-null reference value x, x.equals(x) should return true.
• It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
• For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
o	Object: the reference object with which to compare.

Returns
boolean	true if this object is the same as the obj argument; false otherwise.

getAudioDevice

Added in API level 24

public AudioDeviceInfo getAudioDevice ()

Returns information about the audio input device used for this recording.

Returns
AudioDeviceInfo	the audio recording device or null if this information cannot be retrieved

getAudioSource

Added in API level 29

public int getAudioSource ()

Returns the audio source currently used to configure the capture path. It can be different from the source returned by getClientAudioSource() if another capture is active.

Returns

int

the audio source active on the capture path. Value is MediaRecorder.AudioSource.DEFAULT, MediaRecorder.AudioSource.MIC, MediaRecorder.AudioSource.VOICE_UPLINK, MediaRecorder.AudioSource.VOICE_DOWNLINK, MediaRecorder.AudioSource.VOICE_CALL, MediaRecorder.AudioSource.CAMCORDER, MediaRecorder.AudioSource.VOICE_RECOGNITION, MediaRecorder.AudioSource.VOICE_COMMUNICATION, MediaRecorder.AudioSource.UNPROCESSED, or MediaRecorder.AudioSource.VOICE_PERFORMANCE

getClientAudioSessionId

Added in API level 24

public int getClientAudioSessionId ()

Returns the session number of the recording, see AudioRecord#getAudioSessionId().

Returns
int	the session number.

getClientAudioSource

Added in API level 24

public int getClientAudioSource ()

Returns the audio source selected by the client.

Returns

int

the audio source selected by the client. Value is MediaRecorder.AudioSource.DEFAULT, MediaRecorder.AudioSource.MIC, MediaRecorder.AudioSource.VOICE_UPLINK, MediaRecorder.AudioSource.VOICE_DOWNLINK, MediaRecorder.AudioSource.VOICE_CALL, MediaRecorder.AudioSource.CAMCORDER, MediaRecorder.AudioSource.VOICE_RECOGNITION, MediaRecorder.AudioSource.VOICE_COMMUNICATION, MediaRecorder.AudioSource.UNPROCESSED, or MediaRecorder.AudioSource.VOICE_PERFORMANCE

getClientEffects

Added in API level 29

public List<AudioEffect.Descriptor> getClientEffects ()

Returns the list of AudioEffect.Descriptor for all effects currently enabled on the audio capture client (e.g. AudioRecord or MediaRecorder).

Returns
List<AudioEffect.Descriptor>	List of AudioEffect.Descriptor containing all effects enabled for the client. This value cannot be null.

getClientFormat

Added in API level 24

public AudioFormat getClientFormat ()

Returns the audio format at which the client application is recording audio. Note that it may differ from the actual recording format (see getFormat()).

Returns
AudioFormat	the recording format

getEffects

Added in API level 29

public List<AudioEffect.Descriptor> getEffects ()

Returns the list of AudioEffect.Descriptor for all effects currently enabled on the capture stream.

Returns
List<AudioEffect.Descriptor>	List of AudioEffect.Descriptor containing all effects enabled on the capture stream. This can be different from the list returned by getClientEffects() if another capture is active. This value cannot be null.

getFormat

Added in API level 24

public AudioFormat getFormat ()

Returns the audio format at which audio is recorded on this Android device. Note that it may differ from the client application recording format (see getClientFormat()).

Returns
AudioFormat	the device recording format

hashCode

Added in API level 24

public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns
int	a hash code value for this object.

isClientSilenced

Added in API level 29

public boolean isClientSilenced ()

Returns true if the audio returned to the client is currently being silenced by the audio framework due to concurrent capture policy (e.g the capturing application does not have an active foreground process or service anymore).

Returns
boolean	true if captured audio is silenced, false otherwise .

writeToParcel

Added in API level 24

public void writeToParcel (Parcel dest, 
                int flags)

Flatten this object in to a Parcel.

Parameters
dest	Parcel: The Parcel in which the object should be written. This value cannot be null.
flags	int: Additional flags about how the object should be written. May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE. Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES