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AudioRecordingConfiguration

public final class AudioRecordingConfiguration
extends Object implements Parcelable

java.lang.Object
   ↳ android.media.AudioRecordingConfiguration


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

Direct polling (see getActiveRecordingConfigurations()) or callback (see 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

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 getClientAudioSessionId()

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

int getClientAudioSource()

Returns the audio source being used for the recording.

AudioFormat getClientFormat()

Returns the audio format at which the client application is recording audio.

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.

void writeToParcel(Parcel dest, int flags)

Flatten this object in to a Parcel.

Inherited methods

From class java.lang.Object
From interface android.os.Parcelable

Fields

Public methods

describeContents

added in API level 24
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(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.

equals

added in API level 24
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.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

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
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

getClientAudioSessionId

added in API level 24
int getClientAudioSessionId ()

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

Returns
int the session number.

getClientAudioSource

added in API level 24
int getClientAudioSource ()

Returns the audio source being used for the recording.

Returns
int one of DEFAULT, MIC, VOICE_UPLINK, VOICE_DOWNLINK, VOICE_CALL, CAMCORDER, VOICE_RECOGNITION, VOICE_COMMUNICATION, UNPROCESSED.

getClientFormat

added in API level 24
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

getFormat

added in API level 24
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
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(Object) 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(java.lang.Object) 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.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
int a hash code value for this object.

writeToParcel

added in API level 24
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.

flags int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.

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