AudioDescriptor

public class AudioDescriptor
extends Object implements Parcelable

java.lang.Object
   ↳ android.media.AudioDescriptor


The AudioDescriptor contains the information to describe the audio playback/capture capabilities. The capabilities are described by a byte array, which is defined by a particular standard. This is used when the format is unrecognized to the platform.

Summary

Constants

int STANDARD_EDID

The Extended Display Identification Data (EDID) standard for a short audio descriptor.

int STANDARD_NONE

The audio standard is not specified.

int STANDARD_SADB

The standard for a Speaker Allocation Data Block (SADB).

int STANDARD_VSADB

The standard for a Vendor-Specific Audio Data Block (VSADB).

Inherited constants

Fields

public static final Creator<AudioDescriptor> 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.

byte[] getDescriptor()
int getEncapsulationType()

The encapsulation type indicates what encapsulation type is required when the framework is using this extra audio descriptor for playing to a device exposing this audio profile.

int getStandard()
int hashCode()

Returns a hash code value for the object.

String toString()

Returns a string representation of the object.

void writeToParcel(Parcel dest, int flags)

Flatten this object in to a Parcel.

Inherited methods

Constants

STANDARD_EDID

Added in API level 31
public static final int STANDARD_EDID

The Extended Display Identification Data (EDID) standard for a short audio descriptor.

Constant Value: 1 (0x00000001)

STANDARD_NONE

Added in API level 31
public static final int STANDARD_NONE

The audio standard is not specified.

Constant Value: 0 (0x00000000)

STANDARD_SADB

Added in API level 34
public static final int STANDARD_SADB

The standard for a Speaker Allocation Data Block (SADB).

Constant Value: 2 (0x00000002)

STANDARD_VSADB

Added in API level 34
public static final int STANDARD_VSADB

The standard for a Vendor-Specific Audio Data Block (VSADB).

Constant Value: 3 (0x00000003)

Fields

CREATOR

Added in API level 33
public static final Creator<AudioDescriptor> CREATOR

Public methods

describeContents

Added in API level 33
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 31
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.

getDescriptor

Added in API level 31
public byte[] getDescriptor ()

Returns
byte[] a byte array that describes audio playback/capture capabilities as encoded by the standard for this AudioDescriptor. This value cannot be null.

getEncapsulationType

Added in API level 31
public int getEncapsulationType ()

The encapsulation type indicates what encapsulation type is required when the framework is using this extra audio descriptor for playing to a device exposing this audio profile. When encapsulation is required, only playback with AudioTrack API is supported. But playback with MediaPlayer is not. When an encapsulation type is required, the AudioFormat encoding selected when creating the AudioTrack must match the encapsulation type, e.g AudioFormat#ENCODING_IEC61937 for AudioProfile.AUDIO_ENCAPSULATION_TYPE_IEC61937.

Returns
int an integer representing the encapsulation type Value is AudioProfile.AUDIO_ENCAPSULATION_TYPE_NONE, AudioProfile.AUDIO_ENCAPSULATION_TYPE_IEC61937, or AudioProfile.AUDIO_ENCAPSULATION_TYPE_PCM

getStandard

Added in API level 31
public int getStandard ()

Returns
int the standard that defines audio playback/capture capabilities. Value is STANDARD_NONE, STANDARD_EDID, STANDARD_SADB, or STANDARD_VSADB

hashCode

Added in API level 31
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.

toString

Added in API level 31
public String toString ()

Returns a string representation of the object.

Returns
String a string representation of the object.

writeToParcel

Added in API level 33
public void writeToParcel (Parcel dest, 
                int flags)

Flatten this object in to a Parcel.

Parameters
dest Parcel: 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