Added in API level 12
Deprecated in API level 31

AudioStream

open class AudioStream : RtpStream
kotlin.Any
   ↳ android.net.rtp.RtpStream
   ↳ android.net.rtp.AudioStream

An AudioStream is a RtpStream which carrys audio payloads over Real-time Transport Protocol (RTP). Two different classes are developed in order to support various usages such as audio conferencing. An AudioStream represents a remote endpoint which consists of a network mapping and a configured AudioCodec. On the other side, An AudioGroup represents a local endpoint which mixes all the AudioStreams and optionally interacts with the speaker and the microphone at the same time. The simplest usage includes one for each endpoints. For other combinations, developers should be aware of the limitations described in AudioGroup.

An AudioStream becomes busy when it joins an AudioGroup. In this case most of the setter methods are disabled. This is designed to ease the task of managing native resources. One can always make an AudioStream leave its AudioGroup by calling join(android.net.rtp.AudioGroup) with null and put it back after the modification is done.

Using this class requires android.Manifest.permission#INTERNET permission.

Summary

Inherited constants
Public constructors

Creates an AudioStream on the given local address.

Public methods
open AudioCodec!

Returns the AudioCodec, or null if it is not set.

open Int

Returns the RTP payload type for dual-tone multi-frequency (DTMF) digits, or -1 if it is not enabled.

open AudioGroup!

Returns the joined AudioGroup.

Boolean

Returns true if the stream has already joined an AudioGroup.

open Unit
join(group: AudioGroup!)

Joins an AudioGroup.

open Unit

Sets the AudioCodec.

open Unit

Sets the RTP payload type for dual-tone multi-frequency (DTMF) digits.

Inherited functions

Public constructors

AudioStream

Added in API level 12
AudioStream(address: InetAddress!)

Creates an AudioStream on the given local address. Note that the local port is assigned automatically to conform with RFC 3550.

Parameters
address InetAddress!: The network address of the local host to bind to.
Exceptions
java.net.SocketException if the address cannot be bound or a problem occurs during binding.

Public methods

getCodec

Added in API level 12
open fun getCodec(): AudioCodec!

Deprecated: Deprecated in Java.

Returns the AudioCodec, or null if it is not set.

getDtmfType

Added in API level 12
open fun getDtmfType(): Int

Deprecated: Deprecated in Java.

Returns the RTP payload type for dual-tone multi-frequency (DTMF) digits, or -1 if it is not enabled.

getGroup

Added in API level 12
open fun getGroup(): AudioGroup!

Deprecated: Deprecated in Java.

Returns the joined AudioGroup.

isBusy

Added in API level 12
fun isBusy(): Boolean

Deprecated: Deprecated in Java.

Returns true if the stream has already joined an AudioGroup.

join

Added in API level 12
open fun join(group: AudioGroup!): Unit

Deprecated: Deprecated in Java.

Joins an AudioGroup. Each stream can join only one group at a time. The group can be changed by passing a different one or removed by calling this method with null.

Parameters
group AudioGroup!: The AudioGroup to join or null to leave.
Exceptions
java.lang.IllegalStateException if the stream is not properly configured.

setCodec

Added in API level 12
open fun setCodec(codec: AudioCodec!): Unit

Deprecated: Deprecated in Java.

Sets the AudioCodec.

Parameters
codec AudioCodec!: The AudioCodec to be used.
Exceptions
java.lang.IllegalArgumentException if its type is used by DTMF.
java.lang.IllegalStateException if the stream is busy.

setDtmfType

Added in API level 12
open fun setDtmfType(type: Int): Unit

Deprecated: Deprecated in Java.

Sets the RTP payload type for dual-tone multi-frequency (DTMF) digits. The primary usage is to send digits to the remote gateway to perform certain tasks, such as second-stage dialing. According to RFC 2833, the RTP payload type for DTMF is assigned dynamically, so it must be in the range of 96 and 127. One can use -1 to disable DTMF and free up the previous assigned type. This method cannot be called when the stream already joined an AudioGroup.

Parameters
type Int: The RTP payload type to be used or -1 to disable it.
Exceptions
java.lang.IllegalArgumentException if the type is invalid or used by codec.
java.lang.IllegalStateException if the stream is busy.