AudioAttributes

ALLOW_CAPTURE_BY_ALL

public static final int ALLOW_CAPTURE_BY_ALL

Indicates that the audio may be captured by any app. For privacy, the following usages cannot be recorded: VOICE_COMMUNICATION*, USAGE_NOTIFICATION*, USAGE_ASSISTANCE* and USAGE_ASSISTANT. On Build.VERSION_CODES.Q, this means only USAGE_UNKNOWN, USAGE_MEDIA and USAGE_GAME may be captured. See MediaProjection and Builder#setAllowedCapturePolicy.

Constant Value: 1 (0x00000001)

ALLOW_CAPTURE_BY_NONE

public static final int ALLOW_CAPTURE_BY_NONE

Indicates that the audio is not to be recorded by any app, even if it is a system app. It is encouraged to use ALLOW_CAPTURE_BY_SYSTEM instead of this value as system apps provide significant and useful features for the user (such as live captioning and accessibility). See Builder#setAllowedCapturePolicy.

Constant Value: 3 (0x00000003)

ALLOW_CAPTURE_BY_SYSTEM

public static final int ALLOW_CAPTURE_BY_SYSTEM

Indicates that the audio may only be captured by system apps. System apps can capture for many purposes like accessibility, live captions, user guidance... but abide to the following restrictions: - the audio cannot leave the device - the audio cannot be passed to a third party app - the audio cannot be recorded at a higher quality than 16kHz 16bit mono See Builder#setAllowedCapturePolicy.

Constant Value: 2 (0x00000002)

CONTENT_TYPE_MOVIE

public static final int CONTENT_TYPE_MOVIE

Content type value to use when the content type is a soundtrack, typically accompanying a movie or TV program.

Constant Value: 3 (0x00000003)

CONTENT_TYPE_MUSIC

public static final int CONTENT_TYPE_MUSIC

Content type value to use when the content type is music.

Constant Value: 2 (0x00000002)

CONTENT_TYPE_SONIFICATION

public static final int CONTENT_TYPE_SONIFICATION

Content type value to use when the content type is a sound used to accompany a user action, such as a beep or sound effect expressing a key click, or event, such as the type of a sound for a bonus being received in a game. These sounds are mostly synthesized or short Foley sounds.

Constant Value: 4 (0x00000004)

CONTENT_TYPE_SPEECH

public static final int CONTENT_TYPE_SPEECH

Content type value to use when the content type is speech.

Constant Value: 1 (0x00000001)

CONTENT_TYPE_UNKNOWN

public static final int CONTENT_TYPE_UNKNOWN

Content type value to use when the content type is unknown, or other than the ones defined.

Constant Value: 0 (0x00000000)

FLAG_AUDIBILITY_ENFORCED

public static final int FLAG_AUDIBILITY_ENFORCED

Flag defining a behavior where the audibility of the sound will be ensured by the system. To ensure sound audibility, the system only uses built-in speakers or wired headphones and specifically excludes wireless audio devices.

Note this flag should only be used for sounds subject to regulatory behaviors in some countries, such as for camera shutter sound, and not for routing behaviors.

Constant Value: 1 (0x00000001)

FLAG_HW_AV_SYNC

public static final int FLAG_HW_AV_SYNC

Flag requesting the use of an output stream supporting hardware A/V synchronization.

Constant Value: 16 (0x00000010)

FLAG_LOW_LATENCY

public static final int FLAG_LOW_LATENCY

This constant was deprecated in API level 26.
Use AudioTrack.Builder#setPerformanceMode(int) with AudioTrack#PERFORMANCE_MODE_LOW_LATENCY to control performance.

Flag requesting a low latency path when creating an AudioTrack. When using this flag, the sample rate must match the native sample rate of the device. Effects processing is also unavailable. Note that if this flag is used without specifying a bufferSizeInBytes then the AudioTrack's actual buffer size may be too small. It is recommended that a fairly large buffer should be specified when the AudioTrack is created. Then the actual size can be reduced by calling AudioTrack#setBufferSizeInFrames(int). The buffer size can be optimized by lowering it after each write() call until the audio glitches, which is detected by calling AudioTrack#getUnderrunCount(). Then the buffer size can be increased until there are no glitches. This tuning step should be done while playing silence. This technique provides a compromise between latency and glitch rate.

Constant Value: 256 (0x00000100)

SPATIALIZATION_BEHAVIOR_AUTO

public static final int SPATIALIZATION_BEHAVIOR_AUTO

Constant indicating the audio content associated with these attributes will follow the default platform behavior with regards to which content will be spatialized or not.

Constant Value: 0 (0x00000000)

SPATIALIZATION_BEHAVIOR_NEVER

public static final int SPATIALIZATION_BEHAVIOR_NEVER

Constant indicating the audio content associated with these attributes should never be virtualized.

Constant Value: 1 (0x00000001)

USAGE_ALARM

public static final int USAGE_ALARM

Usage value to use when the usage is an alarm (e.g. wake-up alarm).

Constant Value: 4 (0x00000004)

USAGE_ASSISTANCE_ACCESSIBILITY

public static final int USAGE_ASSISTANCE_ACCESSIBILITY

Usage value to use when the usage is for accessibility, such as with a screen reader.

Constant Value: 11 (0x0000000b)

USAGE_ASSISTANCE_NAVIGATION_GUIDANCE

public static final int USAGE_ASSISTANCE_NAVIGATION_GUIDANCE

Usage value to use when the usage is driving or navigation directions.

Constant Value: 12 (0x0000000c)

USAGE_ASSISTANCE_SONIFICATION

public static final int USAGE_ASSISTANCE_SONIFICATION

Usage value to use when the usage is sonification, such as with user interface sounds.

Constant Value: 13 (0x0000000d)

USAGE_ASSISTANT

public static final int USAGE_ASSISTANT

Usage value to use for audio responses to user queries, audio instructions or help utterances.

Constant Value: 16 (0x00000010)

USAGE_GAME

public static final int USAGE_GAME

Usage value to use when the usage is for game audio.

Constant Value: 14 (0x0000000e)

USAGE_MEDIA

public static final int USAGE_MEDIA

Usage value to use when the usage is media, such as music, or movie soundtracks.

Constant Value: 1 (0x00000001)

USAGE_NOTIFICATION

public static final int USAGE_NOTIFICATION

Usage value to use when the usage is notification. See other notification usages for more specialized uses.

Constant Value: 5 (0x00000005)

USAGE_NOTIFICATION_COMMUNICATION_DELAYED

public static final int USAGE_NOTIFICATION_COMMUNICATION_DELAYED

This constant was deprecated in API level 33.
Use USAGE_NOTIFICATION which is handled the same way as this usage by the audio framework

Usage value to use when the usage is notification for a non-immediate type of communication such as e-mail.

Constant Value: 9 (0x00000009)

USAGE_NOTIFICATION_COMMUNICATION_INSTANT

public static final int USAGE_NOTIFICATION_COMMUNICATION_INSTANT

This constant was deprecated in API level 33.
Use USAGE_NOTIFICATION which is handled the same way as this usage by the audio framework

Usage value to use when the usage is notification for an "instant" communication such as a chat, or SMS.

Constant Value: 8 (0x00000008)

USAGE_NOTIFICATION_COMMUNICATION_REQUEST

public static final int USAGE_NOTIFICATION_COMMUNICATION_REQUEST

This constant was deprecated in API level 33.
Use USAGE_NOTIFICATION which is handled the same way as this usage by the audio framework

Usage value to use when the usage is a request to enter/end a communication, such as a VoIP communication or video-conference.

Constant Value: 7 (0x00000007)

USAGE_NOTIFICATION_EVENT

public static final int USAGE_NOTIFICATION_EVENT

Usage value to use when the usage is to attract the user's attention, such as a reminder or low battery warning.

Constant Value: 10 (0x0000000a)

USAGE_NOTIFICATION_RINGTONE

public static final int USAGE_NOTIFICATION_RINGTONE

Usage value to use when the usage is telephony ringtone.

Constant Value: 6 (0x00000006)

USAGE_UNKNOWN

public static final int USAGE_UNKNOWN

Usage value to use when the usage is unknown.

Constant Value: 0 (0x00000000)

USAGE_VOICE_COMMUNICATION

public static final int USAGE_VOICE_COMMUNICATION

Usage value to use when the usage is voice communications, such as telephony or VoIP.

Constant Value: 2 (0x00000002)

USAGE_VOICE_COMMUNICATION_SIGNALLING

public static final int USAGE_VOICE_COMMUNICATION_SIGNALLING

Usage value to use when the usage is in-call signalling, such as with a "busy" beep, or DTMF tones.

Constant Value: 3 (0x00000003)

CREATOR

public static final Creator<AudioAttributes> CREATOR

areHapticChannelsMuted

public boolean areHapticChannelsMuted ()

Return if haptic channels are muted.

describeContents

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.

equals

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.

getAllowedCapturePolicy

public int getAllowedCapturePolicy ()

Return the capture policy.

getContentType

public int getContentType ()

Return the content type.

getFlags

public int getFlags ()

Return the flags.

getSpatializationBehavior

public int getSpatializationBehavior ()

Return the behavior affecting whether spatialization will be used.

getUsage

public int getUsage ()

Return the usage.

getVolumeControlStream

public int getVolumeControlStream ()

Returns the stream type matching this AudioAttributes instance for volume control. Use this method to derive the stream type needed to configure the volume control slider in an Activity with Activity.setVolumeControlStream(int) for playback conducted with these attributes.
Do not use this method to set the stream type on an audio player object (e.g. AudioTrack, MediaPlayer) as this is deprecated, use AudioAttributes instead.

hashCode

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.

isContentSpatialized

public boolean isContentSpatialized ()

Return true if the audio content associated with these attributes has already been spatialized, that is it has already been processed to offer a binaural or transaural immersive audio experience.

toString

public String toString ()

Returns a string representation of the object.

writeToParcel

public void writeToParcel (Parcel dest, 
                int flags)

Flatten this object in to a Parcel.